WO2012115466A2 - Dispositif électroluminescent - Google Patents

Dispositif électroluminescent Download PDF

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Publication number
WO2012115466A2
WO2012115466A2 PCT/KR2012/001392 KR2012001392W WO2012115466A2 WO 2012115466 A2 WO2012115466 A2 WO 2012115466A2 KR 2012001392 W KR2012001392 W KR 2012001392W WO 2012115466 A2 WO2012115466 A2 WO 2012115466A2
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WIPO (PCT)
Prior art keywords
electrode
light emitting
power
power supply
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2012/001392
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English (en)
Korean (ko)
Other versions
WO2012115466A3 (fr
Inventor
이준호
권창구
김정배
민천규
윤영태
이경국
이성희
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jusung Engineering Co Ltd
Original Assignee
Jusung Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020110017013A external-priority patent/KR101861257B1/ko
Priority claimed from KR1020110047132A external-priority patent/KR101860381B1/ko
Priority claimed from KR1020120017471A external-priority patent/KR101984003B1/ko
Application filed by Jusung Engineering Co Ltd filed Critical Jusung Engineering Co Ltd
Publication of WO2012115466A2 publication Critical patent/WO2012115466A2/fr
Publication of WO2012115466A3 publication Critical patent/WO2012115466A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8051—Anodes
    • H10K59/80515—Anodes characterised by their shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80521—Cathodes characterised by their shape

Definitions

  • the present invention relates to a light emitting device having an organic light emitting part, and more particularly, to a light emitting device capable of controlling luminance so as to minimize a local luminance difference in the light emitting part.
  • an organic light-emitting diode (OLED) device includes an anode, an organic light emitting portion positioned on the anode, and a cathode located on the organic light emitting portion.
  • the organic light emitting device when a voltage is applied between the anode and the cathode, holes are injected from the anode into the organic light emitting portion, and electrons are injected from the cathode into the organic light emitting portion.
  • the organic light emitting part comes into contact with moisture, oxygen, NOx, or the like in the air, the performance and lifespan are significantly reduced, and thus a protective layer is formed thereon.
  • the organic light emitting device can itself be manufactured in a thin film, which can significantly reduce the thickness of the light source, and it is possible to drive a low power as well as to reduce the temperature tendency.
  • the organic light emitting device may also function as a panel of a display device by using various kinds of organic light emitting materials capable of realizing various color lights, and thus, the organic light emitting device is widely used in backlights, various lighting devices, and display devices of liquid crystal displays.
  • FIG. 1 is a diagram illustrating a form in which a positive power source and a negative power source are supplied in a conventional organic light emitting device.
  • (+) power is supplied to the electrode pads positioned on the left and right sides of the organic light emitting unit 20, and the electrode pads located on the upper and lower sides of the organic light emitting unit 20 ( -) Power is supplied.
  • the edge portion of the organic light emitting part 20 having the highest density of the positive charge and the negative charge has the highest voltage and the highest luminance.
  • the central portion of the organic light emitting unit 20 having the lowest density of the positive charge and the negative charge has the lowest voltage and the lowest luminance.
  • the center portion is more than twice as large as 250 cd.
  • the luminance non-uniformity occurs, it is difficult to produce high luminance and adversely affects the life of the organic light emitting unit 20.
  • the charge density is high around each side and edge of the organic light emitting part, the charge density decreases due to electric resistance or the like toward the center portion.
  • the edge portion of the organic light emitting unit having the highest density of the positive charge and the negative charge has the highest voltage and the highest luminance.
  • the central portion of the organic light emitting unit having the lowest density of the positive charge and the negative charge has the lowest voltage and the lowest luminance.
  • an auxiliary electrode having a resistance lower than that of the anode is disposed on the anode, so that current can be smoothly transmitted to the center of the organic light emitting device.
  • an object of the present invention is to provide an organic light emitting diode device having a novel current supply method capable of reducing a difference in luminance between an edge portion and a central portion in an organic light emitting diode device.
  • an object of the present invention is to accurately measure the voltage and current applied to the auxiliary electrode in the region where the luminance decreases, and to control the driving of the panel according to the measured value, thereby improving the luminance uniformity. To provide.
  • another object of the present invention is to provide a light emitting device in which a sensing resistance is integrally formed on an auxiliary electrode to accurately measure panel characteristics such as voltage, current, and temperature, and thereby enable accurate and efficient panel control. .
  • Another object of the present invention is to provide a light emitting device to simplify the production process and reduce the complexity of the external circuit by eliminating the process of configuring a separate sensing resistor to the outside by configuring the auxiliary electrode integrated sensing resistor.
  • the present invention for achieving this object is a substrate; A first electrode part provided on the substrate; A light emitting part provided on the first electrode part and configured of an organic light emitting body; And a second electrode part provided in the light emitting part, wherein at least one of the first electrode part and the second electrode part is provided with a plurality of zones separated from each other to be insulated from each other.
  • the area is provided with a light emitting device characterized in that the power of different polarities is supplied to suppress the occurrence of the luminance difference in the light emitting portion.
  • the first and second regions insulated from each other are alternately formed along the periphery of the first electrode portion.
  • a first power source is supplied to the first zone, a second power source having a polarity opposite to the first power source is supplied to the second zone,
  • the first electrode part is in contact with the light emitting part and not in contact with the second electrode part.
  • the first electrode portion is in contact with the second electrode portion and is not in contact with the light emitting portion.
  • the first electrode portion is removed at a boundary between the first zone and the second zone, and the insulating portion is stacked on a portion where the first electrode portion is removed.
  • the second power source is (-) polarity, and if the first power source is (-) polarity, the second power source is characterized as being (+) polarity.
  • At least one side of the first electrode part may include the first zone and the second zone, respectively.
  • the second zones are characterized in that they are electrically separated from each other.
  • An edge portion of the first electrode part may include a dummy area in which the first zone and the second zone are not disposed.
  • the same area as the first zone and the second zone is disposed in a portion adjacent to the dummy area.
  • the present invention is a substrate; A first electrode part provided on the substrate;
  • a light emitting part provided on the first electrode part and configured of an organic light emitting body;
  • a second electrode part provided in the light emitting part; It includes a current supply device for supplying power to at least one of the first electrode portion or the second electrode portion,
  • At least one of the first electrode portion and the second electrode portion is provided with a plurality of zones separated from each other to be insulated from each other,
  • the current supply device includes a light emitting device comprising resistance means for adjusting a current value supplied to the first electrode portion or the second electrode portion so as to suppress the occurrence of a difference in luminance in the light emitting portion. do.
  • the current supply device includes a first connection pad for supplying power to some of the plurality of zones, and a second connection pad for supplying power of opposite polarity to the other zone, wherein the resistance means comprises the first connection.
  • the current value supplied to the pad or the second connection pad is adjusted.
  • the plurality of zones includes a first zone and a second zone insulated from and separated from the first zone, wherein the current supply device comprises: a first power supply for supplying a first power source; A second power supply for supplying a second power opposite to the first power; An insulating frame having a central portion, which is an empty space, and a peripheral portion disposed along the periphery of the central portion; A first power supply disposed over the periphery and including a first power supply line electrically connected to the first power supply and a plurality of first connection pads branched along the first power supply line;
  • a second power supply line disposed under the periphery and electrically connected to the second power supply and disposed along the first power supply line, and a plurality of second connection pads branched along the second power supply line; And a second power supply unit including a.
  • the first electrode portion has a plurality of sides, wherein the plurality of sides of the first electrode portion include the first zone and the second zone, and the resistance means is adjacent to an edge of the first power supply line. It is characterized by having a larger resistance value.
  • the resistance means may be connected in one-to-one with each of the first connection pads or each of the second connection pads.
  • At least two of the first connection pads or at least two of the second connection pads are branched from one of the resistance means.
  • the first connection pad may pass through the insulating frame and extend along a lower portion of the insulating frame.
  • the first power source is a (+) power source
  • the second power source is a ( ⁇ ) power source
  • the resistance means is arranged between the first power supply line and the first connection pad.
  • the present invention is a substrate; A first electrode part disposed on the substrate; An auxiliary electrode unit disposed on the first electrode; A light emitting part disposed on the auxiliary electrode part and the first electrode part; A second electrode unit provided in the light emitting unit; A power supply unit supplying power to the light emitting unit through the first electrode unit, the second electrode unit, and the auxiliary electrode unit; And
  • a control unit connected to the auxiliary electrode to measure a current or voltage applied to the auxiliary electrode and to control power supply of the power supply unit to suppress occurrence of a luminance difference in the light emitting unit according to a measurement result.
  • the auxiliary electrode includes a power receiving unit forming an outer edge
  • a wiring part provided to be surrounded by the power receiver and connected to the power receiver, and a sensing resistor provided to the power receiver.
  • the power receiving unit includes a first extension part extending in an outward direction
  • a second extension part extending from an end portion of the first extension part
  • the sensing resistor is disposed in the direction of the second extension part from one side of the electrode exposure part.
  • An end of the sensing resistor is spaced apart from the second extension part.
  • the sensing resistor is provided in plural, characterized in that disposed on one side edge and the other side edge of the power receiver.
  • the sensing resistors are provided in plural, and are spaced apart from each other along the edge of the power receiving unit.
  • an insulating part provided on the auxiliary electrode to insulate the auxiliary electrode from the light emitting part.
  • the controller may be configured to control the power supply by comparing a current flowing through a setting resistor including the sensing resistor or a voltage applied to the setting resistor with a reference voltage or a reference current.
  • the resistance value of the set resistance may be a sum of an equivalent resistance obtained by equalizing an auxiliary electrode between the resistance value of the pair of sensing resistors and the pair of sensing resistors formed on different edges, or the resistance value of the sensing resistor. It is done.
  • the sensing resistors are paired with the sensing resistors having the shortest distances formed from different edges.
  • the control unit may be a current control unit or an overcurrent protection circuit for controlling a current value applied to at least one of the first electrode unit, the auxiliary electrode unit, the light emitting unit, and the second electrode unit.
  • the controller may be provided corresponding to each pair of the sensing resistors.
  • the controller is connected to at least one sensing resistor of the pair of sensing resistors.
  • the current control unit comprises a reference voltage supply circuit for generating a reference voltage by the input voltage
  • a regulator-mirror circuit one end of which is connected to the other end of the set resistor connected to ground and generates a control signal by the reference voltage and the set resistor;
  • a current regulating circuit controlling a current flow of at least one of the first electrode part, the auxiliary electrode part, the light emitting part, and the second electrode part according to the control signal.
  • the current control unit includes a comparator having a first input terminal connected to one end of the set resistor and the other end connected to a constant current source;
  • a switching device having a collector terminal connected to the other end of the set resistor, a base terminal connected to an output terminal of the comparator, and an emitter terminal connected to ground (GND).
  • the current control unit includes: a first resistor having one end connected to an input power source and the other end connected to one end of the set resistor and a first input end of a comparator;
  • a comparator having the first input terminal connected to one end of the set resistor and the first resistor and the second input terminal connected to a constant voltage source
  • An output terminal of the comparator is connected to a gate terminal, and one of a source terminal and a drain terminal is connected to at least one of the first electrode portion, the auxiliary electrode portion, the light emitting portion, and the second electrode portion, and the other A switching element connected to ground,
  • the set resistor is characterized in that the other end is connected to the ground.
  • the sensing resistor is characterized in that the resistance value changes with temperature.
  • the overcurrent protection circuit may include a switching device having a collector terminal and an emitter terminal connected to a power supply and a ground, respectively; A comparator having an output terminal connected to the base terminal of the switching element, and one of the input terminals connected to the emitter terminal; And a second resistor having one end connected to the other input terminal of the comparator and the other end connected to one end of the set resistor, wherein the set resistor is connected between the second resistor and the collector terminal.
  • a protective cover provided on the second electrode part; Further provided on the protective cover, the conductor further provided to face the second electrode portion,
  • the control unit is connected to the conductor and has a specific polarity constrained by restraining a charge of a specific polarity emitted from the second electrode unit by applying a power having a polarity opposite to that of the power applied to the second electrode unit.
  • the charge is characterized by causing the light emitting action in the light emitting portion with the charge of the opposite polarity.
  • an organic light emitting diode device having a novel current supply method capable of reducing the difference in luminance between an edge portion and a center portion in an organic light emitting diode device, and a current supply device used therein.
  • the light emitting device can improve the luminance uniformity by accurately measuring the voltage and current applied to the auxiliary electrode in the region where the luminance decreases and controlling the driving of the panel according to the measured value.
  • the light emitting device forms a sensing resistor integrally with the auxiliary electrode to accurately measure panel characteristics such as voltage, current, and temperature, thereby enabling accurate and efficient panel control.
  • the light emitting device can simplify the production process and reduce the complexity of the external circuit by omitting a process of configuring a separate sensing resistor externally by configuring the auxiliary electrode integrated sensing resistor.
  • a conductor capable of additionally supplying a negative charge or a positive charge to a portion where the luminance is reduced in the light emitting device, thereby concentrating the charges that have not been used for luminescence in the luminance reduction portion, and these charges are emitted.
  • FIG. 1 is a diagram schematically illustrating a form in which a positive power source and a negative power source are supplied in a conventional light emitting device.
  • FIG. 2 is a schematic view illustrating a form in which respective layers are stacked in the light emitting device according to the embodiment of the present invention.
  • FIG. 3 is a plan view illustrating a first electrode part of the light emitting device of FIG. 2.
  • FIG. 4 is a plan view illustrating an insulation part of the light emitting device of FIG. 2.
  • FIG. 5 is a plan view illustrating a form in which a power source is connected to the first electrode unit of FIG. 3.
  • FIG. 6 is a cross-sectional view taken along the line AA ′ of the light emitting device of FIG. 2.
  • FIG. 7 is a cross-sectional view taken along the line BB ′ in the light emitting device of FIG. 2.
  • FIG. 8 is a diagram illustrating charge distribution according to supply of (+) power and ( ⁇ ) power in the light emitting device of FIG. 2.
  • FIG. 9 is a plan view showing a current supply device according to an embodiment of the present invention.
  • FIG. 10 is a cross-sectional view along the line CC ′ in the current supply device of FIG. 9.
  • FIG. 11 is a cross-sectional view along the line D-D 'in the current supply device of FIG.
  • FIG. 12 is a cross-sectional view along the line E-E 'in the current supply device of FIG.
  • Fig. 13 is a diagram showing an example in which the current supply device of the present invention is used.
  • FIG. 14 is a diagram showing a current supply device according to another embodiment of the present invention.
  • FIG. 15 is a schematic view illustrating a form in which respective layers are stacked in the light emitting device according to the embodiment of the present invention.
  • FIG. 16 is a plan view illustrating a first electrode part of the light emitting device of FIG. 15.
  • 17 is a plan view illustrating an insulating frame of the light emitting device of FIG. 15.
  • FIG. 18 is a plan view illustrating a form in which a power source is connected to the first electrode unit of FIG. 16.
  • FIG. 19 is a plan view illustrating a state in which the current supply device illustrated in FIG. 9 is stacked on the first electrode unit of FIG. 18.
  • FIG. 20 is a cross-sectional view taken along the line F-F 'in the light emitting device of FIG.
  • FIG. 21 is a cross-sectional view taken along the line G-G 'of the light emitting device of FIG.
  • FIG. 22 is a diagram schematically illustrating charge distribution according to supply of (+) power and ( ⁇ ) power in the light emitting device of FIG. 15.
  • FIG. 23 is a diagram illustrating a luminance difference between a center and an edge of a light emitting device in a test in which no resistance means is disposed in the current supply device of FIG. 9.
  • FIG. 24 is a diagram illustrating a luminance difference between a center and an edge in percentage in the test of FIG. 23.
  • FIG. 25 is a diagram illustrating a difference in luminance between the center and the edge of the light emitting device in the test in which the resistance means are arranged with different resistance values between the center and the edge in the current supply device of FIG.
  • FIG. 26 is a diagram illustrating a difference in luminance between a center and an edge in a test of FIG. 25.
  • FIG. 27 is a plan view of a light emitting device according to the present invention.
  • 28 and 29 are plan views of the first electrode of the present invention.
  • FIG. 30 is a plan view of a power supply unit according to the present invention.
  • FIG. 31 is a sectional view taken along the line H-H 'in FIG.
  • FIG. 32 is a cross-sectional view taken along line II ′ in FIG. 30.
  • FIG. 33 is a cross-sectional view taken along the line J-J 'in FIG.
  • 35 is an exemplary view showing an auxiliary electrode formed in a light emitting device according to the present invention.
  • 36 is an enlarged view of a portion K of FIG. 25.
  • 37 is an exemplary view showing a connection example with a circuit portion.
  • 38 is an exemplary view showing a modification of the form and configuration of a sensing resistor.
  • 39 is an exemplary view showing an example where the external circuit unit is a current control unit.
  • FIG. 40 is a diagram for describing an operation of a circuit unit by a sensing resistor.
  • FIG. 40 is an exemplary diagram illustrating an equivalent circuit of a sensing resistor and a panel with resistance.
  • 41 is an exemplary diagram for describing current control using a sensing resistor according to the first embodiment of the controller of the present invention.
  • FIG 42 is an exemplary view showing a current control unit according to a second embodiment of the control unit of the present invention.
  • 43 is an exemplary view showing a configuration example of a current control unit by temperature according to the third embodiment of the control unit of the present invention.
  • 44 is an exemplary configuration diagram showing a current control unit provided with a protection circuit according to the fourth embodiment of the control unit of the present invention.
  • 45 is a view showing an insulating portion, a light emitting portion, and a second electrode in the present invention.
  • FIG. 46 is a cross-sectional view taken along line L-L 'in FIG. 30;
  • FIG. 47 is a cross-sectional view taken along the line M-M 'in FIG.
  • 48 is a view of a light emitting device equipped with a conductor.
  • FIG. 49 is a sectional view taken along the line N-N 'in FIG.
  • FIG. 2 is a schematic view illustrating a form in which respective parts are stacked in the light emitting device according to the embodiment of the present invention.
  • 3 is a plan view illustrating a first electrode part of the light emitting device of FIG. 2.
  • 4 is a plan view illustrating an insulation part of the light emitting device of FIG. 2.
  • the light emitting device 100 includes a substrate 210, a first electrode part 220, an insulating part 230, a light emitting part 240 formed of an organic light emitting body, and a second electrode part 250.
  • the substrate 210 may be a transparent substrate or an opaque substrate.
  • the substrate 210 may be made of a flexible material having flexibility.
  • the substrate 210 is made of a transparent glass substrate.
  • the substrate 210 may have a shape of polygon, circle, oval, star, arbitrary curved surface, or the like.
  • the first electrode part 220 is formed on the substrate 210.
  • the first electrode unit 220 may be formed by depositing or applying a conductive material on the substrate 210.
  • the first electrode portion 220 is an opaque metal material, for example, calcium (Ca), barium (Ba), magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al) or alloys thereof It can be formed as.
  • the first electrode unit 220 may be formed of a transparent conductor, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • the first electrode unit 220 is made of ITO.
  • the first electrode part 220 is removed along the line 220a.
  • laser scribing may be used as a method of removing the first electrode part 220 along the line 220a.
  • the first electrode portion 220 is removed along the line 220a, the first electrode portion 220 is divided into the first region 221 and the second region 222 insulated from each other.
  • the first zone 221 and the second zone 222 are alternately formed along the periphery of the first electrode portion 220.
  • first zones 221 and four second zones 222 are formed at a short side of the first electrode unit 220.
  • five first zones 221 and six second zones 222 are formed at the long side of the first electrode unit 220.
  • the first zones 221 are electrically connected to each other, but the second zones 222 are electrically separated from each other.
  • a first power source is connected to the first zone 221 and a second power source is connected to the second zone 222.
  • the positive power is connected to the first zone 221
  • the negative power is connected to the second zone 222
  • the positive power is connected to the second zone 222. Is connected.
  • the dummy region 123 in which the first zone 221 and the second zone 222 are not disposed is disposed at the corner portion of the first electrode unit 220.
  • a region of the same type of the first zone 221 and the second zone 222 is disposed in a portion adjacent to the dummy region 123.
  • the second zone 222 is disposed at a portion adjacent to the dummy region 123.
  • An insulating part 230 is formed on the first electrode part 220 (see FIG. 4).
  • the insulation 230 may have a ring shape, for example.
  • the insulating part 230 may have a concave-convex pattern having a plurality of protrusions 231 and recesses 232 along the periphery.
  • the insulating part 230 may be formed by, for example, applying a photoresist solution.
  • the protrusion 231 of the insulation portion 230 is generally positioned above the first region 221 of the first electrode portion 220. This is to allow the first electrode portion 220 to be separated from the second electrode portion 250 by the insulating portion 230 in the first region 221, as described below.
  • the light emitting part 240 is positioned on the first electrode part 220 and the insulating part 230.
  • the light emitting part 240 may be formed inside the insulating part 230 so as not to be stacked on the second area 222 while partially overlapping the insulating part 230.
  • the light emitter 240 may include a red light emitting material, a green light emitting material, or a blue light emitting material.
  • the light emitter 240 includes an emissive layer that emits light as a result of the recombination of the electron-hole pairs.
  • the light emitter 240 may further include at least one of a hole injecting layer, an electron injecting layer, a hole transporting layer, and an electron transporting layer. have.
  • the second electrode part 250 is formed on the light emitting part 240.
  • the second electrode part 250 may be stacked on the insulating part 230 so as not to deviate from the protrusion 231 of the insulating part 230.
  • the second electrode portion 250 is stacked over the first electrode portion 220 beyond the insulation 230.
  • the second electrode part 250 is an opaque metal material, for example, calcium (Ca), barium (Ba), magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), or an alloy thereof. It can be formed as.
  • the second electrode part 250 may be formed of a transparent conductor, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • the second electrode part 250 is made of aluminum.
  • one of the first electrode part 220 and the second electrode part 250 is composed of a transparent electrode.
  • the first electrode part ( Both the 220 and the second electrode part 250 are formed of transparent electrodes.
  • FIG. 5 is a plan view illustrating a form in which a power source is connected to the first electrode unit of FIG. 3.
  • 6 is a cross-sectional view taken along the line AA ′ of the light emitting device of FIG. 2.
  • FIG. 7 is a cross-sectional view taken along the line BB ′ in the light emitting device of FIG. 2.
  • a positive power may be connected to the first zone 221 and a negative power may be connected to the second zone 222.
  • each side of the first electrode unit 220 has a form in which (+) power and ( ⁇ ) power are alternately supplied.
  • the (+) power supplied to the first electrode portion 220 of the outer circumferential portion of the light emitting device contacts the first electrode portion 220 along the first electrode portion 220 inside. Is passed to 240. In this case, the first electrode part 220 to which the positive power is supplied becomes the first zone 221.
  • the first electrode part 220 is in contact with the light emitting part 240 but not in contact with the second electrode part 250. This is because the insulating part 230 is positioned between the first electrode part 220 and the second electrode part 250.
  • the negative power supplied to the first electrode 220 of the outer circumferential portion of the light emitting device is transferred to the second electrode 250 in contact with the first electrode 220.
  • the negative power transmitted to the second electrode part 250 is transferred to the light emitting part 240 in contact with the second electrode part 250.
  • the first electrode 220 positioned at both ends and the first electrode 220 disposed in the middle are electrically separated from each other.
  • the first electrode part serving as a boundary between the first zone 221 and the second zone 222 to electrically separate the first zone 221 and the second zone 222 from each other ( This is enabled by removing 220 along line 220a.
  • the insulation part 230 is stacked on the removed portion of the first electrode part 220 to strengthen insulation.
  • the first electrode portion 220 at both ends becomes the second zone 222, and the intermediate first electrode portion 220 becomes the first zone 221, and thus the first zone 221.
  • second zone 222 are electrically isolated from each other.
  • the first electrode part 220 is in contact with the second electrode part 250 while not in contact with the light emitting part 240.
  • the (+) power and the ( ⁇ ) power delivered to the first electrode part 220 are transferred along the first electrode part 220 and the second electrode part 250, respectively, and the first electrode part 220.
  • a current flows along the light emitting part 240 and the second electrode part 250.
  • FIG. 8 is a diagram illustrating charge distribution according to supply of (+) power and ( ⁇ ) power in the light emitting device of FIG. 2.
  • the positive electrode and the negative power are alternately arranged and supplied to each side of the rectangular first electrode part 220.
  • a distance between a positive (+) power supply and a negative (-) power source is closer at an edge (edge) but gradually increases toward the center, whereby the luminance difference between the center and the edge is greatly increased. do.
  • the (+) power source and the ( ⁇ ) power source are alternately arranged and supplied, so that the distance between the (+) power source and the ( ⁇ ) power source is kept close regardless of the position.
  • the (+) power supply and the (-) power supply are adjacent to each other, as shown by the dotted line, the area where the charge is applied is widened, and thus, the charge is higher than when the (+) power supply and the (-) power supply are far apart.
  • the density increases, the difference in luminance at the edge and the center of the light emitting device (or the organic light emitting body) can be significantly reduced.
  • the center portion can be maintained at 400 cd.
  • the charge density is relatively higher than the other portions at the edge portion, so that the luminance is excessive. It can be prevented from getting too high.
  • the same type of power is disposed among the (+) power source and the (-) power source in the portion adjacent to the dummy region 123, thereby separating the distance between the (+) power source and the (-) power source at the edge portion.
  • (+) power and (-) power are alternately arranged on each side of the rectangular light emitting device.
  • (+) power supply and (-) Advantageous effects can be predicted compared to the conventional method by the way in which the power supplies are arranged together. This may likewise apply to circular, oval or any other curved light emitting device.
  • FIGS. 9 to 26 show embodiments capable of controlling luminance in a direction different from those of FIGS. 1 to 8.
  • the same components as those of FIGS. 1 to 8 will be described using the same reference numerals.
  • FIG. 9 is a plan view showing a current supply device 100 for supplying current in the light emitting device according to the present invention.
  • the current supply device 100 includes a first power supply 111, a second power supply 112, a first power supply 120, a second power supply 130, a resistance means 140, and an insulating frame 150. do.
  • the first power supply 111 supplies a first power, for example, (+) power, to the first power supply 120.
  • the second power supply 112 supplies a second power source, for example, ( ⁇ ) power, to the second power source 130.
  • the first power supplies 121, 122; 120 may be connected to a first power supply line 121 electrically connected to the first power supply 111, and a plurality of first connections branched along the first power supply line 121.
  • Pad 122 As illustrated in FIG. 9, a positive power may be supplied to the first connection pad 122.
  • the insulating frames 150a and 150b may have a thin plate shape, and may have a central portion 150a positioned at the center and a peripheral portion 150b disposed along the periphery of the central portion 150a.
  • the central portion 150a may have a polygonal shape.
  • the central portion 150a has a quadrangular shape
  • the peripheral portion 150b has a quadrangular shape along the periphery of the central portion 150a.
  • the central portion 150a may be made of the same or different material as the peripheral portion 150b.
  • the central portion 150a may be an empty space. In FIG. 9, the central portion 150a forms an empty space.
  • the first power supply line 121 may be disposed along the peripheral portion 150b on the peripheral portion 150b.
  • the first power supply line 121 may have a ring shape of, for example, a circle, an oval or a polygon.
  • the first power supply line 121 is shown to have an approximately rectangular ring shape.
  • the first power supply line 121 is formed in a closed figure, but may also be formed in an open figure in the form of a ring.
  • the first connection pad 122 is branched along the first power supply line 121.
  • the plurality of first connection pads 122 may be branched toward the central portion 150a or branched toward the opposite side of the central portion 150a.
  • first connection pads 122 are shown branched to the center portion 150a side. An end portion of the first connection pad 122 may protrude from the peripheral portion 150b and extend to the central portion 150a. A contact portion may be formed at an end portion of the first connection pad 122.
  • the second power supply units 131, 132 and 130 may include a second power supply line 131 electrically connected to the second power supply 112, and a plurality of second connections branched along the second power supply line 131. Pad 132. As shown in FIG. 2, a negative power may be supplied to the second connection pad 132.
  • the second power supply line 131 may be disposed along the peripheral portion 150b below the peripheral portion 150b.
  • the second power supply line 131 may be insulated from the first power supply line 121 by the peripheral portion 150b and disposed along the first power supply line 121.
  • the second power supply line 131 may have a ring shape of, for example, a circle, an oval or a polygon.
  • the second power supply line 131 is shown to have an approximately rectangular ring shape.
  • the second power supply line 131 is formed in a closed figure, but may also be formed in an open figure in a ring shape.
  • the second power supply line 131 is disposed along the lower portion of the first power supply line 121 with the peripheral portion 150b interposed therebetween, the second power supply line 131 is overlapped with the first power supply line 121 in FIG. 2. Only part of the power supply line 131 is shown.
  • the second connection pads 132 are branched along the second power supply line 131.
  • the second connection pads 132 may be configured in plural, and may be branched toward the center portion 150a or may be branched toward the opposite side of the center portion 150a.
  • the second connection pads 132 are shown branched to the center portion 150a side. An end portion of the second connection pad 132 may protrude from the peripheral portion 150b and extend to the central portion 150a. A contact portion may be formed at an end portion of the second connection pad 132.
  • the first connection pad 122 and the second connection pad 132 may be alternately arranged. (+) Power is supplied to the first connection pad 122, (-) power is supplied to the second connection pad 132, and (+) power and (-) power are alternately supplied along the annular shape. Can be.
  • the resistance means 140 is connected between the first power supply line 121 and the first connection pad 122 or between the second power supply line 131 and the second connection pad 132, thereby providing a first connection.
  • the current value supplied to the pad 122 or the second connection pad 132 is adjusted.
  • the resistance means 140 is illustrated as being formed between the first power supply line 121 to which the positive power is supplied and the first connection pad 122.
  • the resistance means 140 may be connected to the first connection pad 122 one-to-one. That is, each resistance means 140 may be connected to each first connection pad 122.
  • first connection pads 122 may be branched from one resistance means 140.
  • three first connection pads 122 are branched from one resistance means 140 on the left and right sides of the first power supply line 121. Accordingly, the positive power supplied to the first power supply 111 is supplied to each of the first connection pads 122 through the first power supply line 121 and the resistance means 140.
  • the resistance value of the resistance means 140 may be configured differently for each resistance means 140 to change the current value supplied to each of the first connection pads 122.
  • the first power supply line 121 has a polygonal ring shape, and the resistance value of the resistance means 140 may have a larger resistance value as it is closer to the edge of the polygon.
  • the first power supply line 121 may have a rectangular ring shape, and the resistance value of the resistance means 140 may have a larger resistance value as it is closer to the corner of the rectangle.
  • the resistance means 140 may also include a 0 ohm resistor having a resistance value of zero.
  • the resistance means closer to the corners of the quadrangle in order to prevent the luminance difference from occurring at the center and the edge of the light emitting device. This is to increase the resistance value of 140) to supply less current to each connection pad.
  • FIG. 10 is a cross-sectional view along the AA ′ line of the current supply device of FIG. 9.
  • the peripheral portion 150b of the insulating frame 150 is positioned between the first power supply line 121 and the second power supply line 131.
  • the first coating layer 101 may be positioned on the first power supply line 121 to protect the first power supply line 121.
  • the second coating layer 102 may be disposed under the second power supply line 131 to protect the second power supply line 131.
  • FIG. 11 is a cross-sectional view along the BB ′ line in the current supply device of FIG. 9.
  • the peripheral portion 150b of the insulating frame 150 is positioned between the first power supply line 121 and the second power supply line 131.
  • the through hole 151 is formed in the peripheral portion 150b.
  • the through hole 151 is a passage through which the first connection pad 122 connected with the resistance means 140 extends.
  • the resistance means 140 is connected to the first power supply line 121 and the first connection pad 122, so that the current supplied to the first power supply line 121 passes through the resistance means 140 and the current is small. And supplied to the first connection pad 122.
  • the first connection pad 122 may extend along the lower portion of the insulating frame 150 through the through hole 151 formed in the peripheral portion 150b.
  • the first coating layer 101 may be positioned on the first power supply line 121 to protect the first power supply line 121.
  • the second coating layer 102 may be disposed under the second power supply line 131 to protect the second power supply line 131.
  • the second coating layer 102 may extend shorter than the first coating layer 101 and the peripheral portion 150b to expose the bottom surface of the first connection pad 122.
  • FIG. 12 is a cross-sectional view along the CC ′ line of the current supply device of FIG. 9.
  • the peripheral portion 150b of the insulating frame 150 is positioned between the first power supply line 121 and the second power supply line 131.
  • the second connection pad 132 is connected to the second power supply line 131 to receive current from the second power supply line 131.
  • the first coating layer 101 may be positioned on the first power supply line 121 to protect the first power supply line 121.
  • the second coating layer 102 may be disposed under the second power supply line 131 to protect the second power supply line 131.
  • the second coating layer 102 may extend shorter than the first coating layer 101 and the peripheral portion 150b to expose the bottom surface of the second connection pad 132.
  • the current supply device 100 is a first connection pad 122 for supplying (+) power along the peripheral portion (150b) of the insulating frame 150, and (-) By alternately forming the second connection pads 132 for supplying power, it is possible to achieve a structure in which the positive power and the negative power are alternately supplied with a simple structure.
  • the resistance value of the resistance means 140 connected to the first connection pad 122 or the second connection pad 132 it is supplied to the first connection pad 122 or the second connection pad 132
  • the current value can be adjusted as desired.
  • FIG. 13 is a diagram showing an example in which a current supply device according to an embodiment of the present invention is used.
  • the current supply device 100 may be seated on the object 1 to which current is supplied.
  • the current supply device 100 may supply (+) power and ( ⁇ ) power to the object 1 in a simple manner by alternately arranged (+) power and ( ⁇ ) power.
  • the positive power terminal and the negative power terminal may be alternately formed in the object 1.
  • FIG. 14 is a diagram showing a current supply device according to another embodiment of the present invention.
  • the same parts as in the embodiment shown in FIG. 9 are denoted by the same reference numerals, and detailed description thereof will be omitted.
  • the insulating frames 150a and 150b may have a thin plate shape, and may have a central portion 150a positioned at the center and a peripheral portion 150b disposed along the periphery of the central portion 150a.
  • the central portion 150a may be made of the same or different material as the peripheral portion 150b. In addition, the central portion 150a may be an empty space. In FIG. 14, the central portion 150a forms an empty space.
  • first connection pad 122 ′ and the second connection pad 132 ′ do not protrude beyond the peripheral portion 150b of the insulating frame 150. Accordingly, the end portions of the first connection pad 122 'and the second connection pad 132' can be supported by the peripheral portion 150b.
  • FIG. 15 is a schematic diagram illustrating a form in which respective layers are stacked in the light emitting device of the present invention.
  • FIG. FIG. 16 is a plan view illustrating a first electrode part of the light emitting device of FIG. 15.
  • 17 is a plan view illustrating an insulating frame of the light emitting device of FIG. 15.
  • the light emitting device 200 includes a substrate 210, a first electrode part 220, an insulating frame 230, a light emitting part 240 formed of an organic light emitting body, and a second electrode part 250.
  • the substrate 210 may be a transparent substrate or an opaque substrate.
  • the substrate 210 may be made of a flexible material having flexibility.
  • the substrate 210 is made of a transparent glass substrate.
  • the substrate 210 may have a shape of polygon, circle, oval, star, arbitrary curved surface, or the like.
  • the first electrode part 220 is formed on the substrate 210.
  • the first electrode unit 220 may be formed by depositing or applying a conductive material on the substrate 210.
  • the first electrode part 220 is an opaque metal material, for example, calcium (Ca), barium (Ba), magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), or an alloy thereof. It can be formed as.
  • the first electrode unit 120 may be formed of a transparent conductor, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • the first electrode unit 220 is made of ITO.
  • the first electrode part 220 is removed along the line 220a.
  • laser scribing may be used as a method of removing the first electrode part 220 along the line 220a. As such, since the first electrode portion 220 is removed along the line 220a, the first electrode portion 220 is divided into the first region 221 and the second region 222 insulated from each other.
  • the first zone 221 and the second zone 222 are alternately formed along the periphery of the first electrode portion 220.
  • three first zones 221 and four second zones 222 are formed at a short side of the first electrode unit 220.
  • five first zones 221 and six second zones 222 are formed at the long side of the first electrode unit 220.
  • the first zones 221 are electrically connected to each other, but the second zones 222 are electrically separated from each other.
  • a first power source is connected to the first zone 221 and a second power source is connected to the second zone 222.
  • (+) power is connected to the first zone 221
  • ( ⁇ ) power is connected to the second zone 222
  • ( ⁇ ) power is connected to the first zone 221.
  • a positive power source is connected to the second zone 222.
  • the dummy region 223 in which the first zone 221 and the second zone 222 are not disposed is disposed at the corner portion of the first electrode unit 220.
  • a portion of the first zone 221 and the second zone 222 is disposed in a portion adjacent to the dummy area 223.
  • the second zone 222 is disposed at a portion adjacent to the dummy region 223.
  • An insulating frame 230 is formed on the first electrode portion 220 (see FIG. 17).
  • the insulating frame 230 may have a ring shape, for example.
  • the insulating frame 230 may have an uneven pattern having a plurality of protrusions 231 and recesses 232 along the periphery.
  • the insulating frame 230 may be formed by, for example, applying a photoresist solution.
  • the protrusion 231 of the insulating frame 230 is generally positioned above the first region 221 of the first electrode portion 220. This is to allow the first electrode part 220 to be separated from the second electrode part 250 by the insulating frame 230 in the first region 221, as described below.
  • the light emitting part 240 is positioned on the first electrode part 220 and the insulating frame 230.
  • the light emitting part 240 may be formed inside the insulating frame 230 so as not to be stacked on the second region 222 while partially overlapping the insulating frame 230.
  • the light emitter 240 may include a red light emitting material, a green light emitting material, or a blue light emitting material.
  • the light emitter 240 includes an emissive layer that emits light as a result of the recombination of the electron-hole pairs.
  • the light emitter 240 may further include at least one of a hole injecting layer, an electron injecting layer, a hole transporting layer, and an electron transporting layer. have.
  • the second electrode part 250 is formed on the light emitting part 240.
  • the second electrode part 250 may be stacked on the insulating frame 230 so as not to deviate from the protrusion 231 of the insulating frame 230.
  • the second electrode portion 250 is stacked over the first electrode portion 220 out of the insulating frame 230.
  • the second electrode part 250 is an opaque metal material, for example, calcium (Ca), barium (Ba), magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), or an alloy thereof. It can be formed as.
  • the second electrode part 250 may be formed of a transparent conductor, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • the second electrode part 250 is made of aluminum.
  • one of the first electrode part 220 and the second electrode part 250 is composed of a transparent electrode.
  • the first electrode part ( Both the 220 and the second electrode part 250 are formed of transparent electrodes.
  • FIG. 18 is a plan view illustrating a form in which a power source is connected to the first electrode unit of FIG. 16.
  • 19 is a plan view illustrating a state in which the current supply device illustrated in FIG. 2 is stacked on the first electrode unit of FIG. 18.
  • FIG. 20 is a cross-sectional view taken along the line F-F 'in the light emitting device of FIG.
  • FIG. 21 is a cross-sectional view taken along the line G-G 'of the light emitting device of FIG.
  • a positive power may be connected to the first zone 221, and a negative power may be connected to the second zone 222.
  • each side of the first electrode unit 220 is alternately supplied with (+) power and ( ⁇ ) power.
  • the current supply device 100 illustrated in FIG. 9 is stacked on the first electrode part 220, so that the first zone 221 and the second zone 222 of the first electrode part 220 are stacked. ) To supply current.
  • the first connection pad 122 may be connected to the first zone 221 of the first electrode unit 220 to supply positive power.
  • the second connection pad 132 may be connected to the second zone 222 of the first electrode unit 220 to supply negative power.
  • the positive power and the negative power are alternated to the first zone 221 and the second zone 222 of the first electrode part 220 in a simple manner.
  • a structure supplied with can be achieved.
  • the (+) power supplied to the first electrode part 220 of the outer circumferential portion of the light emitting device contacts the first electrode part 220 along the first electrode part 220 inside. Is passed to 240.
  • the first electrode part 220 to which the positive power is supplied becomes the first zone 221.
  • the first electrode part 220 is in contact with the light emitting part 240 but not in contact with the second electrode part 250. This is because the insulating frame 230 is positioned between the first electrode portion 220 and the second electrode portion 250.
  • the negative power supplied to the first electrode part 220 of the outer circumferential portion of the light emitting device is transferred to the second electrode part 250 in contact with the first electrode part 220.
  • the negative power transmitted to the second electrode part 250 is transferred to the light emitting part 240 in contact with the second electrode part 250.
  • the first electrode portion 220 positioned at both ends and the first electrode portion 220 positioned in the middle are electrically separated from each other.
  • the first electrode part serving as a boundary between the first zone 221 and the second zone 222 to electrically separate the first zone 221 and the second zone 222 from each other ( This is enabled by removing 220 along line 220a.
  • the insulation frame 230 is stacked on the removed portion of the first electrode 220 to reinforce the insulation.
  • the first electrode portion 220 at both ends becomes the second zone 222, and the intermediate first electrode portion 220 becomes the first zone 221, and thus, the first zone 221.
  • second zone 222 are electrically isolated from each other.
  • the first electrode part 220 is in contact with the second electrode part 250 while not in contact with the light emitting part 240.
  • the (+) power and the ( ⁇ ) power delivered to the first electrode part 220 are transferred along the first electrode part 220 and the second electrode part 250, respectively, and the first electrode part 220.
  • a current flows along the light emitting part 240 and the second electrode part 250.
  • FIG. 22 is a diagram schematically illustrating charge distribution according to supply of (+) power and ( ⁇ ) power in the light emitting device of FIG. 15.
  • the positive electrode and the negative power are alternately arranged and supplied to each side of the first electrode portion 220 having a rectangular shape.
  • a distance between a positive (+) power supply and a negative (-) power source is closer at an edge (edge) but gradually increases toward the center, whereby the luminance difference between the center and the edge is greatly increased. do.
  • the (+) power source and the ( ⁇ ) power source are alternately arranged and supplied, so that the distance between the (+) power source and the ( ⁇ ) power source is kept close regardless of the position.
  • the (+) power supply and the (-) power supply are adjacent to each other, as shown by the dotted line, the area where the charge is applied is widened, and thus, the charge is higher than when the (+) power supply and the (-) power supply are far apart.
  • the density increases, the difference in luminance at the edge and the center of the light emitting device (or the organic light emitting body) can be significantly reduced.
  • the center portion can be maintained at 400 cd.
  • a dummy region 223 in which no (+) power source or ( ⁇ ) power source is disposed is provided at the edge portion of the first electrode portion 220, whereby the charge density is relatively higher than other portions at the edge portion, so that the luminance is excessive. It can be prevented from getting too high.
  • the same kind of power source is disposed among the (+) power source and the (-) power source in the portion adjacent to the dummy region 223, thereby separating the distance between the (+) power source and the (-) power source at the edge portion.
  • This may likewise apply to circular, oval or any other curved light emitting device.
  • FIG. 23 is a diagram illustrating a luminance difference between a center and an edge of a light emitting device in a test in which no resistance means is disposed in the current supply device of FIG. 9.
  • FIG. 24 is a diagram illustrating the difference in luminance between the center and the edge in percentage in the test of FIG. 23.
  • the test of FIG. 23 shows the difference in luminance between the center and the edge when 4V and 440mA are applied in the light emitting device of 150mm ⁇ 150mm.
  • the resistance means 140 is not disposed in the current supply device 100. That is, the resistance value of the resistance means 140 is 0 ohms.
  • the test results show that the center luminance is 500 cd and the edge luminance is approximately 850 cd. In terms of percentage, the luminance of the edge represents approximately 170% when the central luminance is 100%.
  • FIG. 25 is a view illustrating a difference in luminance between a center and an edge of a light emitting device in a test in which resistance means are arranged with different resistance values between a center and an edge in the current supply device of FIG. 9.
  • FIG. 26 is a diagram illustrating a luminance difference between a center and an edge in percentage in the test of FIG. 25.
  • the test of FIG. 25 shows the difference in luminance between the center and the edge when 5.4 V and 440 mA are applied in the 150 mm x 150 mm light emitting device. At this time, the resistance value of the resistance means 140 in the center and the edge portion in the current supply device 100 is arranged to be different.
  • a resistance means may be disposed at the corner, C resistance means at the middle of the long side, and B resistance means at the middle of the short side.
  • the resistance of A is 400?
  • the resistance of B is 100?
  • the resistance of C is 0?. This is to place the resistance means 140 having a high resistance value in the edge portion, in order to reduce the difference in brightness between the center and the edge.
  • the luminance at the center is 570 cd and the luminance at the edge is approximately 720 cd.
  • the luminance at the edge represents approximately 125% when the luminance at the center is 100%.
  • the invention shown in Figs. 27 to 49 can control the luminance of the light emitting unit in a manner different from the invention shown in Figs. 2 to 8 and the invention shown in Figs.
  • the light emitting device according to the present invention is also preferably composed of an organic light emitting diode.
  • the light emitting device 200 includes a substrate 210, a first electrode part 220, an auxiliary electrode part 330, an insulating part 230, a light emitting part 240, The second electrode part 250 is included.
  • the light emitter 240 may be configured as an organic light emitter.
  • the light emitter 240 will be described on the premise that the light emitter 240 is configured as an organic light emitter.
  • the substrate 210 may be a transparent substrate or an opaque substrate.
  • the substrate 210 may be made of a flexible material having flexibility.
  • the substrate 210 may be formed of an insulating substrate made of glass, quartz, ceramic, plastic, or the like, and the substrate 210 may be divided into a light emitting area and a pad area.
  • the substrate 210 may have a shape of polygon, circle, oval, star, arbitrary curved surface, or the like.
  • the first electrode part 220 is formed on the substrate 210.
  • the first electrode part 220 may be formed by depositing or applying a conductive material on the substrate 210.
  • the first electrode part 220 is an opaque metal material, for example, calcium (Ca), barium (Ba), magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), or an alloy thereof. It can be formed as.
  • the first electrode 220 may be formed of a transparent conductor, for example, indium tin oxide (ITO), indium zinc oxide (IZO), ZnO (zinc oxide), or In 2 O 3 ( Indium Oxide) and the like.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • In 2 O 3 Indium Oxide
  • the first electrode part 220 becomes a positive electrode which is a hole injection electrode. Meanwhile, as will be described later, the second electrode part 250 becomes a negative electrode which is an electron injection electrode.
  • the light emitter 240 includes an emissive layer that emits light as a result of the recombination of the electron-hole pair.
  • the light emitting unit 240 may include at least one of a hole injecting layer, an electron injecting layer, a hole transporting layer, and an electron transporting layer. It can be composed of a membrane.
  • the hole injection layer is disposed on the first electrode portion 220 as the anode, and the hole transport layer, the light emitting portion, the electron transport layer, and the electron injection layer are sequentially stacked thereon.
  • the second electrode part 250 is formed on the light emitting part 240. In the first region 221 of the first electrode part 220, the second electrode part 250 may be stacked on the insulating part 230 so as not to deviate from the protrusion 231 of the insulating part 230.
  • the second electrode part 250 is stacked on the second region 222 of the first electrode part 220 outside the insulating part 230.
  • the second electrode part 250 is an opaque metal material, for example, calcium (Ca), barium (Ba), magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), or an alloy thereof. It can be formed as.
  • the second electrode part 250 may be formed of a transparent conductor, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • the second electrode part 250 is made of aluminum.
  • one of the first electrode part 220 and the second electrode part 250 is composed of a transparent electrode, and the light emitting device 200 emits light on both sides.
  • the first electrode portion 220 and the second electrode portion 250 are both formed of a transparent electrode.
  • the auxiliary electrode part 300 is disposed on the first electrode part 220 and partitions the first electrode part 220 at predetermined intervals.
  • the auxiliary electrode part 300 is provided in the form of a wiring through which a current can flow.
  • the auxiliary electrode part 300 may be disposed in a mesh shape on the first electrode part 220 as shown in the drawing. Can be.
  • the auxiliary electrode part 300 may be formed in a stripe shape, may be formed in various geometric shapes, and may be formed in numbers, symbols, letters, flowers, or other patterns.
  • the light emitting device 200 may express a figure, a figure, a letter, a number, or the like using a light emitting or non-light emitting area.
  • the auxiliary electrode part 300 is electrically connected to the first electrode part 220 and is made of a material having a lower specific resistance than the first electrode part 220.
  • the auxiliary electrode 300 is preferably made of a reflective material.
  • the auxiliary electrode unit 300 is lithium (Li), calcium (Ca), lithium fluoride / calcium (LiF / Ca), lithium fluoride / aluminum (LiF / Al), aluminum (Al), silver (Ag) It may be made of a material such as magnesium (Mg), gold (Au).
  • the present invention is not limited thereto, and any material may be used as the material of the auxiliary electrode part 300 as long as it reflects light and has a relatively high electrical conductivity compared to the first electrode part 220.
  • the auxiliary electrode part 200 formed in various shapes on the first electrode part 220 may display a specific pattern or shape when emitting light, thereby improving aesthetics, and at the same time, the current flowing through the first electrode part 220 is uniform. It helps to get better.
  • the auxiliary electrode part 300 compensates for the relatively low electrical conductivity of the first electrode part 220, so that the luminance of the light emitted from the light emitting part 240 of the light emitting device 200 becomes uneven overall. prevent.
  • the transparent conductive materials used as the material of the first electrode unit 220 have a relatively high resistivity compared to the metal.
  • the current flowing through the first electrode portion 220 becomes less uniform.
  • the first electrode when light is emitted from the light emitting part 240 formed between the first electrode part 220 and the second electrode part 250 without the auxiliary electrode part 300, the first electrode to which a relatively high current is transmitted.
  • the light of low luminance is emitted from the 240.
  • the overall luminance becomes uneven.
  • the auxiliary electrode unit 300 is preferably provided in the form of wires which cross in a plurality of directions or are connected to each other.
  • the insulating part 230 covers the auxiliary electrode part 300 to prevent conduction between the auxiliary electrode part 300 and the second electrode part 250.
  • the shape of the insulating portion 230 preferably has a shape corresponding to the auxiliary electrode 300.
  • laser scribing may be used as a method of removing some of the first electrode 220 along the line 220a.
  • first electrode portion 220 is removed along the line 220a, so that the first electrode portion 220 is insulated from each other by the first region 221 and the second region 222. To be divided.
  • the first zone 221 and the second zone 222 are alternately formed along the periphery of the first electrode portion 220.
  • first zones 221 and four second zones 222 are formed at short sides of the first electrode unit 220.
  • first zones 221 and six second zones 222 are formed at the long sides of the first electrode unit 220.
  • the first zones 221 are electrically connected to each other, but the second zones 222 are electrically separated from each other.
  • a first power source is connected to the first zone 221 and a second power source is connected to the second zone 222.
  • a negative power is connected to the second zone 222
  • a negative power is connected to the first zone 221
  • the second zone 222, a positive power source is connected.
  • a dummy region 223 in which the first zone 221 and the second zone 222 are not disposed is disposed at an edge portion of the first electrode unit 220.
  • a region of the same type of the first zone 221 and the second zone 222 is disposed in a portion adjacent to the dummy area 223.
  • the second zone 222 is disposed at a portion adjacent to the dummy region 223.
  • FIG. 29 shows that the first zone 221 is supplied with the positive power of the current supply device (see FIG. 30, 100) to be described later, and the second zone 222 is supplied with the negative power. .
  • Fig. 30 is a plan view showing a current supply device functioning as a power supply unit of the present invention.
  • the current supply device 100 includes a first power supply 111, a second power supply 112, a first power supply 120, a second power supply 130, a resistance means 140, and an insulating frame 150. do.
  • the first power supply 111 supplies a first power, for example, (+) power, to the first power supply 120.
  • the second power supply 112 supplies a second power source, for example, ( ⁇ ) power, to the second power source 130.
  • the first power supplies 121, 122; 120 may be connected to a first power supply line 121 electrically connected to the first power supply 111, and a plurality of first connections branched along the first power supply line 121.
  • Pad 122 As illustrated in FIG. 27, a positive power may be supplied to the first connection pad 122.
  • the insulating frames 150a and 150b may have a thin plate shape, and may have a central portion 150a positioned at the center and a peripheral portion 150b disposed along the periphery of the central portion 150a.
  • the central portion 150a may have a polygonal shape.
  • the central portion 150a has a quadrangular shape
  • the peripheral portion 150b has a quadrangular shape along the periphery of the central portion 150a.
  • the central portion 150a may be made of the same or different material as the peripheral portion 150b. In addition, the central portion 150a may be an empty space. In FIG. 30, the central portion 150a is shown to form an empty space.
  • the first power supply line 121 may be disposed along the peripheral portion 150b on the peripheral portion 150b.
  • the first power supply line 121 may have a ring shape of, for example, a circle, an oval or a polygon.
  • the first power supply line 121 is shown to have an approximately rectangular ring shape.
  • the first power supply line 121 is formed in a closed figure, but may also be formed in an open figure in the form of a ring.
  • the first connection pad 122 is branched along the first power supply line 121.
  • the plurality of first connection pads 122 may be branched toward the central portion 150a or branched toward the opposite side of the central portion 150a.
  • first connection pads 122 are shown branched to the center portion 150a side. An end portion of the first connection pad 122 may protrude from the peripheral portion 150b and extend to the central portion 150a. A contact portion may be formed at an end portion of the first connection pad 122.
  • the second power supply units 131, 132 and 130 may include a second power supply line 131 electrically connected to the second power supply 112, and a plurality of second connections branched along the second power supply line 131. Pad 132.
  • a negative power may be supplied to the second connection pad 132.
  • the second power supply line 131 may be disposed along the peripheral portion 150b below the peripheral portion 150b.
  • the second power supply line 131 may be insulated from the first power supply line 121 by the peripheral portion 150b and disposed along the first power supply line 121.
  • the second power supply line 131 may have a ring shape of, for example, a circle, an oval or a polygon.
  • the second power supply line 131 is shown to have an approximately rectangular ring shape.
  • the second power supply line 131 is formed in a closed figure, but may also be formed in an open figure in the form of a ring.
  • the second power supply line 131 is disposed along the lower portion of the first power supply line 121 with the peripheral portion 150b interposed therebetween, the second power supply line 131 is overlapped with the first power supply line 121 in FIG. 2. Only part of the power supply line 131 is shown.
  • the second connection pads 132 are branched along the second power supply line 131.
  • the second connection pads 132 may be configured in plural, and may be branched toward the center portion 150a or may be branched toward the opposite side of the center portion 150a.
  • the second connection pad 132 is shown to be branched to the center portion 150a side. An end portion of the second connection pad 132 may protrude from the peripheral portion 150b and extend to the central portion 150a. A contact portion may be formed at an end portion of the second connection pad 132.
  • the first connection pad 122 and the second connection pad 132 may be alternately arranged. (+) Power is supplied to the first connection pad 122, (-) power is supplied to the second connection pad 132, and (+) power and (-) power are alternately supplied along the annular shape. Can be.
  • FIG. 31 is a cross-sectional view taken along the line H-H 'of the current supply device of FIG.
  • the peripheral portion 150b of the insulating frame 150 is positioned between the first power supply line 121 and the second power supply line 131.
  • the first coating layer 101 may be positioned on the first power supply line 121 to protect the first power supply line 121.
  • the second coating layer 102 may be disposed under the second power supply line 131 to protect the second power supply line 131.
  • FIG. 32 is a cross-sectional view taken along the line II ′ in the current supply device of FIG. 30.
  • the peripheral portion 150b of the insulating frame 150 is positioned between the first power supply line 121 and the second power supply line 131.
  • the through hole 151 is formed in the peripheral portion 150b.
  • the through hole 151 is a passage through which the first connection pad 122 connected to the first power supply line 121 extends.
  • the first connection pad 122 may extend along the lower portion of the insulating frame 150 through the through hole 151 formed in the peripheral portion 150b.
  • the first coating layer 101 may be positioned on the first power supply line 121 to protect the first power supply line 121.
  • the second coating layer 102 may be disposed under the second power supply line 131 to protect the second power supply line 131.
  • the second coating layer 102 may extend shorter than the first coating layer 101 and the peripheral portion 150b to expose the bottom surface of the first connection pad 122.
  • the peripheral portion 150b of the insulating frame 150 is positioned between the first power supply line 121 and the second power supply line 131.
  • the second connection pad 132 is connected to the second power supply line 131 to receive current from the second power supply line 131.
  • the first coating layer 101 may be positioned on the first power supply line 121 to protect the first power supply line 121.
  • the second coating layer 102 may be disposed under the second power supply line 131 to protect the second power supply line 131.
  • the second coating layer 102 may extend shorter than the first coating layer 101 and the peripheral portion 150b to expose the bottom surface of the second connection pad 132.
  • the current supply device 100 is a first connection pad 122 for supplying (+) power along the peripheral portion (150b) of the insulating frame 150, and (-) By alternately forming the second connection pads 132 for supplying power, it is possible to achieve a structure in which the positive power and the negative power are alternately supplied with a simple structure.
  • FIG. 34 illustrates a state in which the current supply device 100 is placed on the first electrode 220.
  • a first connection pad 122 connected to the first power supply line 121 is disposed in the first zone 221 of the first electrode unit 220, where the first electrode unit 220 is disposed.
  • a first connection pad 132 connected to the second power supply line 131 is disposed.
  • a positive power may be applied to the first zone 221 and a negative power may be applied to the second zone 222.
  • 35 is an exemplary view showing an auxiliary electrode formed in a light emitting device according to the present invention.
  • the auxiliary electrode part 300 of the light emitting device includes a power receiving part 310, a wiring part 320, and a sensing resistor part 340.
  • the power receiving unit 310 is connected to the transparent electrode and serves to transfer power supplied from the outside to the wiring unit 320.
  • the power receiving unit 310 is formed with one or more sensing resistors 340 as shown.
  • the power receiver 310 is formed in substantially parallel to each side of the transparent electrode, and is formed in a closed quadrangular ring shape spaced apart from each side by a predetermined distance.
  • the power receiving unit 310 includes first to fourth power receiving lines 311: 311a to 311d.
  • the first faucet line 311a, the third faucet line 311c, the second faucet line 311b and the fourth faucet line 311d are formed on the transparent electrode so as to be parallel to each other, and each of the faucet lines 311 Both ends are physically connected to ends of the power receiving line 311 adjacent to each other.
  • the faucet line 311 may have a protrusion 331 and a recess 332 as shown.
  • the protruding portion 331 and the concave portion 332 are alternately formed in the direction facing each side of the transparent electrode, that is, the side of the non-wiring region side receiving line.
  • the protrusion 331 and the recess 332 formed in the power receiver 310 are formed to be connected to an external power supply line, and the protrusion 331 is directly connected to the power supply line of the first power supply together with the transparent electrode. .
  • the concave portion 332 may be used for connection with an external power supply line, or may not be formed of the protrusion 331 and the concave portion 332, but this is not a limitation of the present invention.
  • the description will be made on the assumption that the protrusion 331 is directly connected to the power supply line of the first power, and the first power is a positive (+) power.
  • the power receiving unit 310 is formed on the transparent electrode by a process such as photolithography or printing by using a metal having a better conductivity than the transparent electrode such as gold and silver.
  • the wiring part 320 is formed in a net shape to connect each power receiving part 310 to the inner region 415 closed by the power receiving part 310.
  • the wiring part 320 serves to evenly transfer the first power supplied through the power receiving part 310 to the entire area of the transparent electrode.
  • the wiring part 320 connects the first wiring line 321 connecting the first power receiving line 311a and the third power receiving line 311c, the second power receiving line 311b, and the fourth power receiving line 311d.
  • the second wiring 322 is configured, and the first wiring 321 and the second wiring 322 are physically connected to each other at the intersection.
  • the wiring part 320 having a checkerboard shape is formed in the internal region 415 by a vertical (first wiring) line and a horizontal (second wiring) line, but the present invention is not limited thereto. It may be formed in various forms.
  • the wiring unit 320 is used as a measurement variable of the circuit unit together with the sensing resistor unit 340.
  • the wiring unit 320 disposed between the sensing resistors 34n: 341a to 343b of the sensing resistor unit 340 among the wiring unit 320 is equivalent to the measurement variable along with the sensing resistor 34n to form a circuit unit. Used for control.
  • the sensing resistor unit 340 is formed in the power receiving unit 310 and serves as a terminal connected to the circuit unit, and serves to provide a measurement variable such as, for example, a resistance value.
  • the controller measures at least one of resistance, current, and voltage of the wiring unit 320 connecting the resistance value of the sensing resistor unit 340 and the sensing resistor 34n to determine the electrical balance of the wiring unit 320.
  • the invention includes the concept of electric field, potential, charge density, voltage, and power, and hereinafter, collectively referred to as electric balance), and control is performed to make the luminance of the panel uniform by controlling accordingly.
  • control unit The configuration of the control unit and the method of using the sensing resistor unit 340 will be described in more detail below.
  • the sensing resistor unit 340 includes one or more sensing resistors 34n, and each of the sensing resistors 34n is formed on the power receiving unit 310 that connects the area to be measured with the shortest distance.
  • FIG. 35 shows an example in which the first to third sensing resistor pairs 341, 342, and 343 are configured, and the circuit unit connected to each of the sensing resistor pairs 341, 342, and 343 includes a pair of sensing resistors ( The electrical characteristics of the area around the virtual line connecting 34n) at the shortest distance are detected and reflected in the control.
  • the controller detects the current flowing in the panel or the temperature of the panel to control the driving of the panel.
  • the controller uses the set resistor to detect current or temperature.
  • the set resistance may be one value of the sensing resistor 34n.
  • the set resistance may be the sum of equivalent resistance values for the transparent electrode and the auxiliary electrode unit 300 between the sensing resistor pairs 341, 342, and 343 and the sensing resistor pairs 341, 342, and 343. This will be described in more detail below with an example of a specific control unit.
  • the panel control by the set resistor may be performed by separately operating the circuit parts connected to the sensing resistors 34n or may be performed by operating the circuit parts connected to the sensing resistors 34n in conjunction with each other.
  • the controller may be connected to one sensing resistor of the sensing resistors forming an image, and may be connected to each sensing resistor pair 341, 342, and 343.
  • Circuit units connected to each of the sensing resistor pairs 341, 342, and 343 may be configured differently to have different circuit configurations and operation characteristics, thereby not limiting the present invention.
  • the set resistance means a single sensing resistor or the sum of the resistance value of the sensing resistor pair and the equalizing resistance value, but in the analysis of the circuit, it may be considered as one resistor, and in the following, it is assumed that it is one resistor. Let's proceed.
  • each of the sensing resistor pairs 341, 342, and 343 is formed on the power receiving unit 310 such that the paired sensing resistors have the shortest distance from each other.
  • a sensing resistor 341 is formed in the first faucet line 311a and the third faucet line 311c having relatively close distances between the faucet lines 311.
  • the positions of the sensing resistors are not necessarily limited to the first and third power receiving lines 311a and 311c.
  • the sensing resistor may be formed on the second faucet line 311b and the fourth faucet line 311d, but in this case, the measured value may be inaccurate.
  • the sensing resistor 340 may be formed in the protrusion 331 of the power receiver 310 as shown in FIG. 10, and the shape of the protrusion 331a in which the sensing resistor 34n is formed is different from the protrusion 331. It is formed differently from the shape of).
  • FIG. 36 is an enlarged view of a portion K of FIG. 35
  • FIG. 37 is an exemplary diagram illustrating a connection example with a circuit unit.
  • 38 is a diagram illustrating a modification of the form and configuration of the sensing resistor.
  • the protrusion 331a of the portion where the sensing resistor 342 is formed is formed in a shape different from that of the other protrusion 331.
  • the protruding portion 331 of the other portion is formed so that the line width of the power receiving line 311 is widened.
  • the protrusion 331a of the portion where the sensing resistor 342 is formed includes a first extension part 333 and a second extension part 334.
  • the first extension part 333 extends in the panel side direction from the power receiving line 311, and the second extension part 334 is formed in a direction parallel to the power receiving line 311 at the end of the first extension part 333. do.
  • the first extension part 333 and the second extension part 334 are continuously formed without being physically interrupted.
  • an electrode exposure part (or, unlike the other protrusion part 331) is formed between the first extension part 333, the second extension part 334, and the power receiving line. Space 335 is formed.
  • the portion parallel to the second extension portion 334 in the power receiving line 311 is formed to have a narrower line width than other portions.
  • the sensing resistor 342 is formed in the electrode exposed portion 335 so that one end thereof is connected to the power receiving line 311 as shown.
  • the shape of the sensing resistor 342 may be configured in various forms and numbers as shown in FIG.
  • the present invention is not limited to the present disclosure.
  • the power receiving unit 320 may be connected to the power supply unit and the power supply line 381 or pattern as shown in FIG. 37 as shown.
  • the protrusion 331a and the sensing resistor 342a may also be connected by the signal line 382.
  • the circuit portion may be connected to the sensing resistor 342 in the form of a chip on board (COB), thereby not limiting the present invention.
  • 39 is an exemplary view showing an example where the external circuit unit is a current control unit.
  • 40 is a view for explaining the operation of the circuit unit by the sensing resistor, an exemplary diagram showing the sensing resistor and the panel as an equivalent circuit for the resistance.
  • 41 is an exemplary diagram for describing current control using a sensing resistor.
  • the current controller 350 according to the first embodiment of the controller of the present invention includes a regulator-mirror circuit 391, a current regulation circuit 392 and a reference voltage supply circuit 393. Included, the set resistor (RT) is connected to the regulator-mirror circuit 391.
  • the current controller 350 further includes a low voltage protection circuit 395 and a shutdown delay circuit 394.
  • the present invention adjusts the current flow in the region around the shortest distance connecting the pairs of sensing resistors 341, 342, and 343 to maintain uniform luminance when the panel is driven.
  • the current control unit 350 shown in FIG. 39 may be connected to the sensing resistor 34n as an external circuit unit.
  • the current controller 350 controls the current flowing through the panel to be kept constant by the set value RSET.
  • the set value (RSET) is determined by the set resistor (RT) connected between the ground (GND) and the set value (RSET) input terminal, the set resistor (RT) is the current source of the mirror / regulator circuit 151
  • the mirror / regulator circuit 351 controls the current regulating circuit 352 by the current source to adjust the current flowing through the panel.
  • the current controller 350 is connected to any one of the sensing resistors of the sensing resistor pairs 341, 342, and 343.
  • the current controller 350 includes a low voltage protection circuit 395, a shutdown delay circuit 394, a reference voltage supply circuit 393, a regulator-mirror circuit 391, and a current regulation circuit 392.
  • the low voltage protection circuit 395 receives the panel input voltage VIN, and when the panel input voltage VIN is less than or equal to the operating limit voltage, the low voltage protection circuit 395 controls the current regulation circuit 392 to stop driving of the panel.
  • the low voltage protection circuit 395 controls the current regulation circuit 392 in response to a request from the shutdown delay circuit 394 to stop driving of the panel.
  • the low voltage protection circuit 395 is connected to a panel power supply (not shown) to receive the panel input voltage VIN, and the input voltage VIN is supplied to the reference voltage supply circuit 393 and the regulator-mirror circuit 391. It is supplied to, and is connected to the current control circuit 392.
  • the shutdown delay circuit 394 externally determines the supply of the control signal EN / PWM, and when the supply of the control signal EN / PWM is stopped, the shutdown delay circuit 394 requests the low voltage protection circuit 395 to stop driving the panel. .
  • the reference voltage supply circuit 393 supplies a reference voltage for controlling the current regulating circuit 392 by the regulator-mirror circuit 391 to the regulator-mirror circuit 391. To this end, the reference voltage supply circuit 393 receives the panel input voltage VIN from the low voltage protection circuit 395.
  • the regulator-mirror circuit 391 controls the current regulating circuit 392 by the reference voltage supplied from the set resistor RT and the reference voltage supply circuit 393.
  • the regulator-mirror circuit 391 is connected to the set resistor RT, the reference voltage supply circuit 393, and the current regulation circuit 392.
  • the regulator-mirror circuit 391 controls the amount of current flowing through the panel to decrease as the resistance of the set resistor RT increases, and when the resistance of the set resistor RT is fixed, a constant current flows through the panel.
  • Current control circuit 392 is controlled.
  • the current regulating circuit 392 operates under the control of at least one of the external control signal EN / PWM, the low voltage protection circuit 395, and the regulator-mirror circuit 391, and serves to adjust the current flowing through the panel. do. To this end, the current regulation circuit 392 is connected between the panel and the second power source (or negative power source, or GND).
  • the set resistance RT is determined by the sensing resistance values RS (RS1n, RS2n, RS3n) or the sensing resistance value RS and the wiring resistances R: R1 to R3.
  • RS11, RS12, RS21, RS22, RS31, and RS32 mean resistance values of the sensing resistor 34n, respectively.
  • R1 to R3 mean an equivalent resistance to the virtual shortest distance connecting the sensing resistor pairs 341, 342, and 343.
  • the set resistor RT may be one of a resistance value of the sensing resistor 34n connected to the set value input terminal or a sum of resistance values of the resistance groups 349: 349a to 349c.
  • the value of the setting resistor RT is the resistance of the first sensing resistor 341a or the first sensing.
  • the resistor 341a, the second sensing resistor 341b, and the first wiring resistor R1 may be the sum of the resistors 341a, 2nd sensing resistor 341b, and the first wiring resistor R1.
  • the transparent electrode and the auxiliary electrode unit 300 may be equalized in a form in which resistors having different resistance values are engaged with each other.
  • the transparent electrode acts as a resistive component, resulting in irregular current flow.
  • the sum of the currents flowing between the power supply VCC and the ground GND is the same at the power supply VCC and the ground GND, but has different values at the measurement points S1, S2, and S3.
  • the currents I1, I2, and I3 flowing along imaginary lines connecting S1-S1 ', S2-S2', and S3-S3 ' have different values.
  • the difference between I1, I2, and I3 acts as a cause of the difference in luminance of the panel.
  • the luminance of the panel is controlled by uniformly controlling the values of I1, I2, and I3 through the sensing resistor and the current controller 350. This will reduce the deviation.
  • the current control unit 350 may be configured for each of the first to third resistance groups 349 corresponding to S1-S1 ', S2-S2', and S3-S3 '.
  • the current control unit 350 connected to each resistance group 349 detects a current flowing through each resistance group 349 through a set resistor RT, and through this, the currents I1 through to each resistance group 349 flow. To control I3).
  • the current control unit 350 controls so that more current is supplied to the resistance group 349 through which the currents I1 to I3 flow less, and a smaller amount to the resistance group 349 through which the currents I1 to I3 flow excessively. It is controlled to supply the current of.
  • the current regulator 352 when the current detected through the set resistor RT increases, the current regulator 352 operates so that the amount of current flowing through the panel decreases. When the detected current decreases, the amount of current flowing through the panel increases. The current regulator 352 is operated.
  • the current control unit 350 individually controls the current flowing through each resistance group 349 by the current control unit 350 connected to each resistance group 349, thereby virtualizing the virtual group to which each resistance group 349 belongs.
  • the luminance of the region By keeping the luminance of the region constant, the luminance of the entire panel is uniformly adjusted. This reduces the luminance variation of the panel and increases the luminance uniformity by uniformly adjusting the amount of current flowing in the front of the panel.
  • the value of the setting resistor (RT) in the current control unit 350 is a wiring unit 320 connecting the pair of sensing resistance values RS11-RS12, RS21-RS22, RS31-RS32 and the pair of sensing resistors 34n. It can be defined as the sum of the equivalent resistance values (R1, R2, R3) of.
  • the set resistor RT may be a value RS11, RS12, RS21, RS22, RS31, or RS32 of the sensing resistor 34n engaged with the current controller 350.
  • three groups of current controllers 350 may be configured in the panel having the auxiliary electrode unit 300 of FIG. 35, and the set resistance values of each current controller 350 may be RS11, RS21, RS31 or RS12, RS22, It may be RS32 or RS11 + R1 + RS12, RS21 + R2 + RS22, RS31 + R3 + RS32.
  • FIG 42 is an exemplary view showing a current control unit according to a second embodiment of the control unit of the present invention.
  • the current control unit includes a switching element (SW: SW1, SW2, SW3), a comparator (OP: OP1, OP2, OP3) and a constant current source (IR or constant voltage source).
  • SW switching element
  • OP comparator
  • IR constant voltage source
  • the comparator OP has a first input terminal connected to one end of the set resistor RT, and the second input terminal connected to the constant current source IR. In addition, the output terminal of the comparator OP is connected to the base terminal B of the switching element.
  • the collector terminal C of the switching element is connected to the output terminal of the panel EL, the base terminal B is connected to the output terminal of the comparator OP, and the emitter terminal E is connected to the ground GND.
  • the panel EL may be understood to collectively refer to the first electrode part, the auxiliary electrode, the second electrode part, and the light emitting part, and the connection may be made with any one of them. In addition, this matter is equally applied to the following description.
  • One end of the set resistor RT is connected to the input terminal of the comparator OP, and the other end is connected to the output terminal and the collector terminal C of the panel EL.
  • the current IRT flowing through the setting resistor RT is the first input of the comparator OP
  • the reference current ir supplied from the constant current source IR is the second input of the comparator OP. do.
  • the comparator OP compares the first input and the second input to control the switching element SW, thereby controlling the currents I1, I2, and I3 flowing through each equivalent region.
  • the current control unit of the second embodiment compares the current applied to the setting resistor RT with the current of the constant current source, and controls the switching element based on the comparison value to adjust the amount of current flowing through the switching element, Through this, the current applied to the auxiliary electrode unit 300 is controlled.
  • FIG 43 is an exemplary view showing a configuration example of a current control unit according to the third embodiment of the control unit of the present invention.
  • the current control unit includes a first resistor RA set resistor RT, a comparator OP4, a constant voltage source VR, and a switching device SWM.
  • the current controller controls the luminance of the panel by controlling the current supplied to the panel by configuring the sensing resistor 34n as a resistor whose resistance value changes with temperature.
  • the current control unit includes a first resistor RA setting resistor RT, a comparator OP4, a constant voltage source VR, and a switching device SWM, which are resistances of the equivalent regions.
  • One end of the first resistor RA is connected to the power supply VCC, and the other end thereof is connected to one end of the set resistor RT and an input terminal of the comparator OP.
  • one end of the first resistor RA and the set resistor RT may be input to the negative input terminal of the comparator OP, but the present invention is not limited thereto.
  • One end of the set resistor RT is connected to the ground GND, and the other end is connected to the other end RT of the first resistor RA and the input terminal of the comparator OP.
  • the positive terminal of the constant voltage source VR is connected to another input terminal of the comparator OP, for example, a positive input terminal.
  • the output terminal of the comparator OP is connected to the gate terminal of the switching element SWM.
  • the comparator OP compares the voltage across the set resistor RT with the voltage of the constant voltage source VR, and adjusts the current flowing through the switching element SWM according to the comparison result to adjust the current flow of the panel EL. Will be adjusted.
  • a gate terminal is connected to the output terminal of the comparator OP, a source terminal S is connected to the ground GND, and a drain terminal D is connected to the output terminal of the panel.
  • the current control unit is connected to each of the resistance groups to control the currents I1 to I3 for each resistance group, thereby adjusting the brightness of the panel.
  • 44 is an exemplary configuration diagram showing a protection circuit according to a fourth embodiment of a controller of the present invention.
  • the protection circuit includes a set resistor RT, a second resistor RR, a comparator OP, and a switching device SW.
  • One end of the set resistor RT is connected to the power supply VCC together with the collector terminal of the switching element.
  • the other end of the set resistor RT is connected to an input terminal of the panel EL and one end of the second resistor RR.
  • One end of the second resistor RR is connected to the input terminal of the panel EL and the set resistor Rt, and the other end thereof is connected to the first input terminal of the comparator OP.
  • the collector terminal C of the switching device SW is connected to the power supply VCC, the base terminal B is connected to the output terminal of the comparator, and the emitter terminal E is connected to the ground GND and the comparator SW. It is fed back to the second input terminal.
  • the comparator compares the current of the feedback emitter terminal E with the current passing through the set resistance RT, and controls the switching element SW according to the comparison result.
  • the protection circuit prevents the panel EL, particularly the light emitting portion, from being damaged by a short circuit, overvoltage or overcurrent.
  • 45 illustrates an insulating portion 230 disposed on the first electrode portion 220.
  • the insulation unit 230 may be configured, for example, in a frame shape having a closed space.
  • the insulating part 230 may have a concave-convex pattern having a plurality of protrusions 231 and recesses 232 along the outer edge thereof.
  • the insulating part 230 may be formed by applying a photoresist solution.
  • the protruding portion 231 of the insulating portion 230 may be positioned above the first region 221 of the first electrode portion 220, which will be described later, in which the first electrode portion is formed in the first region 221. This is for the 220 to be separated from the second electrode part 250 by the insulating part 230.
  • the insulating part 230 covers and insulates the first insulating part 233 to cover and insulate the power receiving part 310 of the auxiliary electrode part 300 and the wiring part 320 of the auxiliary electrode part 300. And two insulating portions 234.
  • the first insulation portion 233 is provided in a frame shape corresponding to the shape of the power receiving portion 310, and the second insulation portion 234 is provided in a wire shape corresponding to the shape of the wiring portion 320. do.
  • the thickness of the first insulating portion 233 and the second insulating portion 234 is greater than the thickness of the power receiving portion 310 and the wiring portion 320. To lose.
  • the light emitting part 240 is positioned on the first electrode part (refer to FIGS. 28 and 29 and 220), the auxiliary electrode part (refer to FIG. 10 and 300) and the insulating part 230.
  • the light emitting part 240 may be disposed so as not to be stacked on the second area (see FIGS. 3/4 and 222) while partially overlapping the insulating part 230.
  • the outer edge of the light emitting unit 240 is preferably disposed so as not to leave the outer edge of the insulating portion 230.
  • the light emitter 240 may include a red light emitting material, a green light emitting material, or a blue light emitting material.
  • the light emitting unit 240 is made of a low molecular organic material or a polymer organic fire, and has an emissive layer that emits light as a result of recombination of electron-hole pairs.
  • the light emitting unit 240 may further include at least one of a hole injecting layer, an electron injecting layer, a hole transporting layer, and an electron transporting layer. Can be.
  • the second electrode part 250 is disposed on the light emitting part 240.
  • the outermost edge of the second electrode part 250 is not separated from the outermost edge of the protrusion 231 of the insulator 230. Can be stacked on top.
  • the second electrode part 250 is stacked on the first electrode part (see FIGS. 28 and 29 and 220) out of the insulating part 230. do.
  • the second electrode part 250 is an opaque metal material, for example, calcium (Ca), barium (Ba), magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), or these It may be formed of an alloy.
  • the second electrode part 250 may be formed of a transparent conductor, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • the second electrode part 250 is made of aluminum.
  • one of the first electrode part 220 and the second electrode part 250 is composed of a transparent electrode, and the light emitting device 200 emits double-sided light.
  • both the first electrode portion 220 and the second electrode portion 250 are formed of a transparent electrode.
  • the second electrode part 250 is formed on the organic light emitting part 240.
  • the second electrode part 250 may be stacked on the insulating part 230 so as not to deviate from the protrusion 231 of the insulating part 230.
  • the second electrode part 250 is stacked on the first electrode part 220 outside the insulating part 230.
  • the second electrode part 250 is an opaque metal material, for example, calcium (Ca), barium (Ba), magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), or an alloy thereof. It can be formed as.
  • the second electrode part 250 may be formed of a transparent conductor, for example, indium tin oxide (ITO) or indium zinc oxide (IZO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • the second electrode part 250 is made of aluminum.
  • FIG. 46 illustrates a cross section taken along the line L-L 'of the light emitting device 200 of FIG. 27, and FIG. 47 illustrates a cross section taken along the line M-M' of the light emitting device 200 of FIG.
  • the auxiliary electrode part 300 is disposed on the first electrode part 220.
  • the width of the wiring part 320 constituting the auxiliary electrode part 300 is preferably about 50 ⁇ 250 ⁇ m.
  • the interval between the wiring portion 320 and the other wiring portion 320 of the auxiliary electrode 300 is preferably 300 ⁇ 600 ⁇ m.
  • the distance between the wiring part 320 and the wiring part 320 becomes too narrow, there may be a problem that the current density in the light emitting part 240 adjacent to the location where the wiring part 320 is located increases and is overheated.
  • the sensing resistor part 341a protrudes from both sides of the auxiliary electrode part 300 and may be connected to the controller (not shown).
  • the auxiliary electrode part 300 may be covered by the insulating part 230.
  • the insulating part 230 insulates the auxiliary electrode part 300 and the second electrode part 250 from each other.
  • the insulating part 230 is preferably made of an inorganic material made of a material such as silicon oxide or silicon nitride.
  • the material is not limited thereto, and may be composed of various kinds of inorganic materials or organic materials.
  • the insulation unit 230 may be omitted.
  • the light emitting part 240 may be disposed between the auxiliary electrode part 300 and the second electrode part 250 to serve as an insulating part.
  • a separate insulating part may be omitted on the auxiliary electrode part 300.
  • the positive power supplied to the first electrode portion 220 of the outer circumferential portion of the light emitting device 200 is along the first electrode portion 220 of the first electrode portion.
  • the light is transmitted to the light emitting unit 140 in contact with the 220.
  • the first electrode portion 220 to which positive (+) power is supplied becomes the first zone (see FIGS. 28/29 and 221).
  • the first electrode part 220 is in contact with the light emitting part 240, but not in contact with the second electrode part 250.
  • the insulating part 230 is positioned between the first electrode part 220 and the second electrode part 250.
  • the negative power supplied to the first electrode part 220 of the outer circumferential portion of the light emitting device 200 is in contact with the first electrode part 220. Is passed).
  • the negative power transmitted to the second electrode part 250 is transferred to the light emitting part 240 in contact with the second electrode part 250.
  • the first electrode portion 220 positioned at both ends and the first electrode portion 220 positioned in the middle are electrically separated from each other.
  • this is a boundary between the first zone 221 and the second zone 222 to electrically separate the first zone 221 and the second zone 222 from each other. It is possible by removing a part of the first electrode portion 220 along the line 220a.
  • the insulating part 230 is stacked on the removed portion of the first electrode part 220 to reinforce the insulation.
  • the first electrode portion 220 at both ends becomes the second region 222, and the intermediate first electrode portion 220 becomes the first region 221.
  • the first zone 221 and the second zone 222 are electrically separated from each other.
  • the first electrode part 220 is in contact with the second electrode part 250 while not in contact with the organic light emitting part 240.
  • the (+) power and the ( ⁇ ) power delivered to the first electrode part 220 are delivered along the first electrode part 220 and the second electrode part 250, respectively, and the first Current flows along the electrode unit 220, the light emitting unit 140, and the second electrode unit 250.
  • the difference in the amount of current between the edge portion of the first electrode portion 220 and its central portion may be significantly reduced by the distribution or transfer action of the current by the auxiliary electrode portion 300.
  • the difference in luminance between the edge portion and the central portion of the light emitting unit 240 can also be significantly reduced.
  • the configuration of the power supply device 100 and the panel structure is the same as described above, and thus, a detailed description thereof will be omitted. .
  • a conductor 400 is provided on an upper portion of the panel of FIG. 48.
  • the conductor 400 is provided to face the second electrode part 250, and is opposite to the power applied to the second electrode part 250. Has polarity.
  • the conductor 400 is disposed at a distance spaced a predetermined distance from both the center portion and the center portion to both sides of the panel.
  • the conductors disposed at the center of the panel are denoted by 400b, and the conductors disposed on both sides of the center are denoted by 400a and 400c.
  • the conductor 400 increases the luminance at a portion corresponding to the portion where the conductor 400 is located by supplying a charge having a polarity opposite to the charge emitted from the second electrode unit 250. I can.
  • the lowering of the luminance occurs because the current flowing through the center portion or both sides of the panel is smaller than the other portion, the lowering of luminance may occur in order to prevent such lowering of luminance and to minimize the difference in luminance of the entire panel. Place the conductor 400 in the portion.
  • the controller is connected to the first and second power supply units 111 and 112 to control the power supply of the first and second power units.
  • the controller may measure a current applied to an area (center panel, or both sides of the center) corresponding to the position of the sensing resistor 341a connected to the sensing resistors 341a. have.
  • the controller may also be connected to the conductor 400, and a part of the power supplied from the first and second power supply units 111 and 112 may be guided toward the conductor 400.
  • the positive power may be supplied to the conductor 400. If the power supplied to the second electrode unit 250 is a positive power, the conductor ( A negative power can be supplied to 400).
  • the luminance difference with other zones is generated by supplying additional power of the conductor 400 located in the corresponding zone. Can be minimized or prevented.
  • a cover member 260 is provided on the second electrode part 250, and the conductor 400 may be disposed on the cover member 260 and the conductor 400. ) May be exposed toward the second electrode part 250.
  • An empty space may be formed between the cover member 260 and the second electrode part 250, and an encapsulant 270 may be disposed in the space.
  • the conductor 400 may have a predetermined shape and volume.
  • the conductor 400 is a metal material, for example, zinc (Zn), tin (Sn), indium (In), cadmium (Cd), gallium (Ga), nickel (Ni), iron (Fe), cobalt ( Co), tungsten (W), titanium (Ti), chromium (Cr), molybdenum (Mo), gold (Au), platinum (Pt), calcium (Ca), barium (Ba), magnesium (Mg), silver ( Ag), copper (Cu), aluminum (Al), or an alloy thereof.
  • the conductor 400 may be formed of, for example, ITO or IZO.
  • the electrons (e ⁇ ) emitted from the second electrode part 250 pass through the electron injection layer and the electron transport layer of the light emitting part 240 and are separated from the holes. It meets light emission.
  • the conductor 400 is charged with a polarity opposite to that of the second electrode 250, thereby restraining electrons escaping through the hole transport layer and the hole injection layer due to the electric field effect to a portion adjacent to the conductor 400 so that the electrons are emitted from the light emitting part. Increase the chance of meeting and reacting with the hole.
  • the luminous efficiency of the light emitting device according to the present invention can be improved at the portion where the conductor 400 is located.
  • the conductor 400 when the conductor 400 is positioned in the central portion where the luminance is lowered in the panel, the luminance of the central portion may be improved.
  • the conductor 400 may be disposed at one or more arbitrary positions in a portion to improve luminance even though the conductor 400 is not a central portion of the organic light emitting diode.
  • the current controller 350 maintains the current flowing through the auxiliary electrode constant for each resistance group 349 according to the set resistance (RT) value of the current control circuit 332. This adjusts to make the current value of the entire panel uniform.
  • the set resistance RT and the current adjusting circuit 332 are adjusted so that a constant current flows.
  • the current controller 350 uniformly adjusts the amount of current flowing in the front of the panel, thereby reducing the luminance deviation of the panel and increasing the luminance uniformity.
  • the current control unit of the second embodiment of FIG. 42 controls the switching element SW so that a current equal to the amount determined by the set resistance RT flows through the auxiliary electrode unit 300 when a constant current is supplied from the power supply. .
  • the current control unit When the current supplied from the power supply increases, the current control unit receives the feedback through the setting resistor (RT) to reduce the current flow by the switching element. On the contrary, when the current decreases, the current control unit increases the current flow through the switching element. RT) is controlled to maintain the current flow by a predetermined amount.
  • such a current control unit is provided for each resistance group to reduce the amount of current in the resistance group through which a large current flows, and to increase the amount of current in the resistance group through which a small current flows, so that the amount of current flowing in each area of the panel becomes uniform. do.
  • the current control unit causes the resistance value of the set resistor RT to vary with temperature, and applies the voltage applied to the set resistor RT to the constant voltage source VR. By controlling the switching element in comparison with the voltage, the current flowing through the switching element is controlled.
  • the current control unit of the third embodiment when the current control unit of the third embodiment is supplied with excessive current to the panel or the auxiliary electrode unit 300 to increase the temperature of the set resistor RT, the current flows through the switching element SWM to decrease the temperature. do.
  • the current controller controls the flow of current so that the current applied to the panel or the auxiliary electrode unit 300 is kept constant by the set resistor RT, and at the same time, the temperature of the panel or the auxiliary electrode unit 300 is fixed. I can keep it.
  • the short-circuit protection circuit constituting the current control unit according to the fourth embodiment shown in FIG. 44 forms a bypass B by the switching element SW when the overvoltage, overcurrent or short circuit current is supplied to the panel. By branching the overcurrent or the short circuit current, the panel EL is prevented from being deteriorated by the overcurrent or the short circuit current.
  • the current controller of the fourth embodiment minimizes the current through the switching device SW so that the current flows through the panel or the auxiliary electrode unit 300.
  • the protection circuit forms a bypass by allowing a current to flow through the switching element, and branches the overcurrent through the formed bypass.
  • the protection circuit reduces the current flowing through the switching element so that the current supplied from the power source is supplied to the panel or the auxiliary electrode unit 300.
  • controller (current controller) 350 of the first to fourth embodiments may be applied.
  • the current applied to the wiring unit corresponding to the region where the sensing resistor is disposed among the wiring units of the auxiliary electrode unit is measured.
  • the controller supplies a negative power or a positive power to the conductor corresponding to the specific zone in order to prevent the lowering of the luminance.
  • the conductor 400 may be freely disposed in any shape in a portion of the light emitting device to improve luminance.
  • the voltages supplied to the respective conductors 400 may be configured differently.
  • the conductor 400 according to the present invention has a polarity different from that of the power supplied to the second electrode unit 250 and is spaced apart from the second electrode unit 250, thereby providing a conductor ( It is possible to improve the luminance of the portion in which 250 is disposed.
  • the uniformity of the luminance can be improved by a simple method.
  • the conductor 400 may be disposed at any position and shape in a portion of the light emitting device to improve the brightness, and is disposed at a desired position even when the shape of the light emitting device is changed to easily ensure uniformity of the brightness. can do.
  • desired luminance characteristics may be realized by different voltages or currents supplied to the respective conductors 400.

Landscapes

  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un dispositif électroluminescent présentant une unité organique électroluminescente et un dispositif électroluminescent dont la luminance peut être commandée de manière à réduire au minimum une différence de luminance parmi des parties locales de l'unité organique électroluminescente. Pour atteindre l'objectif précédemment mentionné de la présente invention, le dispositif électroluminescent de la présente invention comprend : un substrat ; une première unité électrode disposée sur le substrat ; une unité électroluminescente disposée dans la première unité électrode et composée d'éléments organiques électroluminescents ; et une seconde unité électrode disposée dans l'unité électroluminescente. La première unité électrode et/ou la seconde unité électrode présentent une pluralité de zones séparées les unes des autres, de telle sorte que les zones puissent être électriquement isolées les unes des autres. Un courant présentant différentes polarités peut être amené à la pluralité de zones de manière à supprimer une différence de luminance dans l'unité électroluminescente.
PCT/KR2012/001392 2011-02-25 2012-02-23 Dispositif électroluminescent Ceased WO2012115466A2 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR10-2011-0017013 2011-02-25
KR1020110017013A KR101861257B1 (ko) 2011-02-25 2011-02-25 유기 발광 다이오드 장치
KR10-2011-0047132 2011-05-19
KR1020110047132A KR101860381B1 (ko) 2011-05-19 2011-05-19 유기 발광 다이오드 장치 및 이에 사용되는 전류 공급 장치
KR10-2012-0017471 2012-02-21
KR1020120017471A KR101984003B1 (ko) 2012-02-21 2012-02-21 발광 장치

Publications (2)

Publication Number Publication Date
WO2012115466A2 true WO2012115466A2 (fr) 2012-08-30
WO2012115466A3 WO2012115466A3 (fr) 2012-12-20

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PCT/KR2012/001392 Ceased WO2012115466A2 (fr) 2011-02-25 2012-02-23 Dispositif électroluminescent

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TW (1) TWI555192B (fr)
WO (1) WO2012115466A2 (fr)

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KR102406966B1 (ko) 2017-11-28 2022-06-08 엘지디스플레이 주식회사 Oled 조명 장치

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Publication number Priority date Publication date Assignee Title
KR20070054799A (ko) * 2005-11-24 2007-05-30 삼성전자주식회사 디스플레이장치 및 그 제조방법
JP2009021213A (ja) * 2007-06-12 2009-01-29 Canon Inc 有機発光装置
EP2003713A3 (fr) * 2007-06-12 2011-07-20 Canon Kabushiki Kaisha Appareil électroluminescent organique
JP5008606B2 (ja) * 2007-07-03 2012-08-22 キヤノン株式会社 有機ｅｌ表示装置及びその製造方法
KR100916911B1 (ko) * 2008-01-18 2009-09-09 삼성모바일디스플레이주식회사 유기전계발광 표시장치
JP4849279B2 (ja) * 2009-05-28 2012-01-11 Ｔｄｋ株式会社 有機ｅｌ表示装置

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WO2012115466A3 (fr) 2012-12-20
TW201246528A (en) 2012-11-16

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