WO2020231241A1 - 화소 및 화소의 구동 방법 - Google Patents
화소 및 화소의 구동 방법 Download PDFInfo
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- WO2020231241A1 WO2020231241A1 PCT/KR2020/095008 KR2020095008W WO2020231241A1 WO 2020231241 A1 WO2020231241 A1 WO 2020231241A1 KR 2020095008 W KR2020095008 W KR 2020095008W WO 2020231241 A1 WO2020231241 A1 WO 2020231241A1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
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- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0852—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor being a dynamic memory with more than one capacitor
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
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- G—PHYSICS
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0262—The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/04—Display protection
- G09G2330/045—Protection against panel overheating
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
Definitions
- the present invention relates to a pixel and a method of driving the pixel.
- Each pixel of the display device may include at least one light emitting diode.
- Light-emitting diodes may deteriorate as the usage period increases. The deteriorated light-emitting diode may require more driving current to exhibit the same luminance.
- a technical problem to be solved is to provide a pixel capable of self-compensating for deterioration of a light emitting diode and a method of driving the pixel.
- a technical problem to be solved is to provide a pixel and a method of driving a pixel capable of reducing leakage current, improving black expression, enabling low-frequency driving, and reducing power consumption.
- a pixel includes: a light emitting diode having an anode connected to a first node; A first capacitor having a first electrode connected to the first node and a second electrode connected to a second node; A first transistor having a gate electrode connected to the second node, a first electrode connected to a third node, and a second electrode connected to a fourth node; And a second transistor having a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the third node.
- the pixel may further include a third transistor having a gate electrode connected to a second scan line, a first electrode connected to an initialization line, and a second electrode connected to the first node.
- the pixel may further include a fourth transistor having a gate electrode connected to the emission line, a first electrode connected to the fourth node, and a second electrode connected to the first node.
- the pixel may further include a fifth transistor having a gate electrode connected to the emission line, a first electrode connected to a first power line, and a second electrode connected to the third node.
- the pixel may further include a sixth transistor having a gate electrode connected to a third scan line, a first electrode connected to the fourth node, and a second electrode connected to the initialization line.
- the pixel may include a seventh transistor having a gate electrode connected to the first scan line, a first electrode connected to the second node, and a second electrode connected to the fourth node.
- the pixel may further include a second capacitor having a first electrode connected to the first power line and a second electrode connected to the second node.
- the pixel may further include an eighth transistor having a gate electrode connected to the third scan line, a first electrode connected to the second node, and a second electrode connected to the fourth node.
- the pixel may include a seventh transistor having a gate electrode connected to the first scan line, including a first electrode, and a second electrode connected to the fourth node; And an eighth transistor having a gate electrode connected to the first scan line, a first electrode connected to the first electrode of the seventh transistor, and a second electrode connected to the second node.
- the pixel may further include a second capacitor having a first electrode connected to the first power line and a second electrode connected to the second node.
- the pixel may further include a sixth transistor having a gate electrode connected to the first scan line, a first electrode connected to the initialization line, and a second electrode connected to the fourth node.
- the pixel may include a seventh transistor having a gate electrode connected to the first scan line, a first electrode connected to the second node, and a second electrode connected to the initialization line; And an eighth transistor having a gate electrode connected to the third scan line, a first electrode connected to the second node, and a second electrode connected to the initialization line.
- the pixel includes: a sixth transistor having a gate electrode connected to a third scan line, including a first electrode, and a second electrode connected to the initialization line; A seventh transistor having a gate electrode connected to the first scan line, a first electrode connected to the second node, and a second electrode connected to the first electrode of the sixth transistor; And an eighth transistor having a gate electrode connected to the first scan line, a first electrode connected to the first electrode of the sixth transistor, and a second electrode connected to the fourth node.
- the pixel may further include a second capacitor having a first electrode connected to the first power line and a second electrode connected to the second node.
- a method of driving a pixel may include: a light emitting diode having an anode connected to a first node; A first capacitor having a first electrode connected to the first node and a second electrode connected to a second node; A first transistor having a gate electrode connected to the second node, a first electrode connected to a third node, and a second electrode connected to a fourth node; And a second transistor having a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the third node, wherein the driving method comprises: initializing the second node Connecting to a line and turning on the second transistor; Separating the second node from the initialization line while maintaining the turn-on state of the second transistor; Turning off the second transistor; And connecting the first node to the initialization line while the second transistor maintains the turn-off state.
- the pixel further includes: a third transistor having a gate electrode connected to a second scan line, a first electrode connected to the initialization line, and a second electrode connected to the first node, and the first node In the step of connecting to the initialization line, the third transistor may be turned on.
- the pixel includes: a fourth transistor having a gate electrode connected to the emission line, a first electrode connected to the fourth node, and a second electrode connected to the first node; And a fifth transistor having a gate electrode connected to the light emitting line, a first electrode connected to a first power line, and a second electrode connected to the third node, wherein the driving method comprises: the third transistor Turning off the power; And turning on the fourth transistor and the fifth transistor while maintaining the turn-off of the third transistor.
- a method of driving a pixel may include: a light emitting diode having an anode connected to a first node; A first capacitor having a first electrode connected to the first node and a second electrode connected to a second node; A first transistor having a gate electrode connected to the second node, a first electrode connected to a third node, and a second electrode connected to a fourth node; And a second transistor having a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the third node, wherein the driving method comprises: turning of the second transistor -Connecting the second node to an initialization line while maintaining the off state; Separating the second node from the initialization line; Turning on the second transistor while the second node is separated from the initialization line; Turning off the second transistor; And connecting the first node to the initialization line while the second transistor maintains the turn-off state.
- the pixel further includes: a third transistor having a gate electrode connected to a second scan line, a first electrode connected to the initialization line, and a second electrode connected to the first node, and the first node In the step of connecting to the initialization line, the third transistor may be turned on.
- the pixel includes: a fourth transistor having a gate electrode connected to the emission line, a first electrode connected to the fourth node, and a second electrode connected to the first node; And a fifth transistor having a gate electrode connected to the light emitting line, a first electrode connected to a first power line, and a second electrode connected to the third node, wherein the driving method comprises: the third transistor Turning off the power; And turning on the fourth transistor and the fifth transistor while maintaining the turn-off of the third transistor.
- the pixel and the method of driving the pixel according to the present invention can compensate for deterioration of the light emitting diode by itself.
- the pixel and the pixel driving method according to the present invention can improve black expression, enable low frequency driving, and reduce power consumption by reducing leakage current.
- FIG. 1 is a diagram for describing a display device according to an exemplary embodiment of the present invention.
- FIG. 2 is a diagram illustrating a scan driver according to an embodiment of the present invention.
- FIG. 3 is a diagram for describing a pixel according to a first exemplary embodiment of the present invention.
- 4 to 11 are diagrams for explaining an exemplary driving method of the pixel of FIG. 2.
- FIG. 12 is a diagram for describing a pixel according to a second embodiment of the present invention.
- FIG. 13 is a diagram for describing a pixel according to a third exemplary embodiment of the present invention.
- FIG. 14 is a diagram for describing a pixel according to a fourth exemplary embodiment of the present invention.
- 15 is a view for explaining a driving method according to another embodiment of the present invention.
- 16 is a diagram for describing a pixel according to a fifth exemplary embodiment of the present invention.
- FIG. 17 is a diagram illustrating a pixel according to a sixth embodiment of the present invention.
- FIG. 18 is a diagram for describing a pixel according to a seventh embodiment of the present invention.
- FIG. 19 is a diagram for describing a pixel according to an eighth embodiment of the present invention.
- FIG. 20 is a diagram for describing a pixel according to a ninth embodiment of the present invention.
- 21 is a diagram for describing a pixel according to a tenth embodiment of the present invention.
- FIG. 1 is a diagram illustrating a display device according to an exemplary embodiment of the present invention
- FIG. 2 is a diagram illustrating a scan driver according to an exemplary embodiment of the present invention.
- a display device 10 includes a timing controller 11, a data driver 12, a scan driver 13, a light emitting driver 14, and a pixel portion 15. It may include.
- the timing controller 11 may receive grayscale values and control signals for an image frame from an external processor.
- the timing controller 11 may render grayscale values to correspond to a specification of the display device 10.
- the external processor may provide a red gradation value, a green gradation value, and a blue gradation value for each unit dot.
- the pixels may not correspond to each gray scale value one to one. In this case, rendering of grayscale values is required.
- rendering of the gray level values may not be necessary. Rendered or unrendered grayscale values may be provided to the data driver 12.
- the timing controller 11 may provide control signals suitable for respective specifications to the data driver 12, the scan driver 13, and the light emitting driver 14 to display an image frame.
- the data driver 12 may generate data voltages to be provided to the data lines D1, D2, D3, and Dn by using grayscale values and control signals. For example, the data driver 12 may sample grayscale values using a clock signal and apply data voltages corresponding to the grayscale values to the data lines D1 to Dn in units of pixel rows. n may be an integer greater than 0.
- the scan driver 13 may receive a clock signal, a scan start signal, and the like from the timing controller 11 and generate scan signals to be provided to the scan lines S1, S2, S3, and Sm. m may be an integer greater than 0.
- the scan lines S1 to Sm include first scan lines GW1, GW2, and GWm, second scan lines GB1, GB2, GBm, and third scan lines GI1. , GI2, GIm).
- the scan driver 13 includes a first scan driver 131 for sequentially supplying first scan signals having a turn-on level pulse to the first scan lines GW1, GW2, GWm,
- a second scan driver 132 for sequentially supplying second scan signals having a turn-on level pulse to the second scan lines GB1, GB2, and GBm, and third scan lines GI1, GI2, and GIm ) May include a third scan driver 133 for sequentially supplying third scan signals having a turn-on level pulse.
- Each of the first to third scan drivers 131, 132, and 133 may include scan stage circuits configured in the form of shift registers.
- Each of the first to third scan drivers 131, 132, 133 generates scan signals in a manner that sequentially transfers a scan start signal in the form of a turn-on level pulse to the next scan stage circuit under control of a clock signal. can do.
- the first to third scan drivers 131, 132, and 133 may be implemented integrally according to a method of driving a pixel.
- the second scan driver 132 and the third scan driver 133 may be implemented integrally.
- the first to third scan drivers 131, 132, 133 It can be implemented integrally.
- the light emission driver 14 may receive a clock signal, a light emission stop signal, and the like from the timing controller 11 to generate light emission signals to be provided to the light emission lines E1, E2, E3, and Eo.
- the light emitting driver 14 may sequentially provide light emitting signals having a turn-off level pulse to the light emitting lines E1 to Eo.
- each light emitting stage circuit of the light emitting driver 14 may be configured in the form of a shift register, and according to the control of a clock signal, a light emission stop signal in the form of a turn-off level pulse is sequentially transmitted to the next light emitting stage circuit.
- Light emission signals can be generated in such a way. o can be an integer greater than 0.
- the pixel portion 15 includes pixels.
- Each pixel PXij may be connected to a corresponding data line, a scan line, and an emission line. Also, the pixels PXij may be connected to a common first power line and a second power line. i and j can be natural numbers.
- the pixel PXij may mean a pixel in which the scan transistor is connected to the i-th scan line and the j-th data line.
- FIG. 3 is a diagram for describing a pixel according to a first exemplary embodiment of the present invention.
- a pixel PXija according to the first embodiment of the present invention includes transistors T1a to T7a, capacitors C1a and C2a, and a light emitting diode LDa.
- the transistors are shown as P-type transistors (eg, PMOS), but those skilled in the art may configure a pixel circuit that performs the same function as an N-type transistor (eg, NMOS). Also, those skilled in the art may configure a pixel circuit having the same function by combining a P-type transistor and an N-type transistor.
- P-type transistors eg, PMOS
- N-type transistor e.g, NMOS
- those skilled in the art may configure a pixel circuit having the same function by combining a P-type transistor and an N-type transistor.
- the transistors are composed of P-type transistors.
- an anode may be connected to the first node N1a, and a cathode may be connected to a second power line ELVSSL.
- the light emitting diode LDa may be composed of an organic light emitting diode, an inorganic light emitting diode, a quantum dot light emitting diode, or the like.
- the pixel PXija is illustrated to include one light emitting diode LDa, but in another embodiment, the pixel PXija may include two or more light emitting diodes LDa. Two or more light emitting diodes LDa may be connected to each other in parallel or may be connected in series. In the following embodiments, it is assumed that a pixel includes one light emitting diode.
- a first electrode may be connected to the first node N1a, and a second electrode may be connected to the second node N2a.
- the first transistor T1a may have a gate electrode connected to the second node N2a, a first electrode connected to the third node N3a, and a second electrode connected to the fourth node N4a.
- the first transistor T1a may be referred to as a driving transistor.
- the second transistor T2a may have a gate electrode connected to the first scan line GWi, a first electrode connected to the data line Dj, and a second electrode connected to the third node N3a.
- the second transistor T2a may be referred to as a scan transistor or a switching transistor.
- the third transistor T3a may have a gate electrode connected to the second scan line GBi, a first electrode connected to the initialization line INTL, and a second electrode connected to the first node N1a.
- the third transistor T3a may be referred to as an anode initialization transistor.
- a gate electrode may be connected to the emission line Ei, a first electrode may be connected to the fourth node N4a, and a second electrode may be connected to the first node N1a.
- the fourth transistor T4a may be referred to as an emission transistor.
- the fifth transistor T5a may have a gate electrode connected to the light emitting line Ei, a first electrode connected to the first power line ELVDDL, and a second electrode connected to the third node N3a.
- the fifth transistor T5a may be referred to as a light emitting transistor.
- the light emitting lines Ei connected to the gate electrodes of the fourth transistor T4a and the fifth transistor T5a are illustrated to be identical to each other, but different light emitting lines may be used for the fourth transistor T4a and the fifth transistor T5a. It may be connected to the gate electrodes of the fifth transistor T5a.
- the sixth transistor T6a may have a gate electrode connected to the third scan line Gii, a first electrode connected to the fourth node N4a, and a second electrode connected to the initialization line INTL.
- the sixth transistor T6a may be referred to as a gate initialization transistor.
- the seventh transistor T7a may have a gate electrode connected to the first scan line GWi, a first electrode connected to the second node N2a, and a second electrode connected to the fourth node N4a.
- the seventh transistor T7a may be referred to as a diode connection transistor.
- a first electrode may be connected to the first power line ELVDDL, and a second electrode may be connected to the second node N2a.
- a first power voltage may be applied to the first power line ELVDDL.
- a second power voltage may be applied to the second power line ELVSSL.
- the magnitude of the first power voltage and the magnitude of the second power voltage may vary depending on the driving method. For example, in the light emission period of the pixel PXija (P14 of FIG. 10 ), the magnitude of the first power voltage may be greater than the magnitude of the second power voltage.
- a redundant description of the magnitudes of the first power voltage and the second power voltage will be omitted.
- An initialization voltage may be applied to the initialization line INTL.
- the size of the initialization voltage may vary depending on the driving method. For example, the magnitude of the initialization voltage in the gate initialization period (P11 of FIG. 4) of the pixel PXija is the first transistor T1a during at least a partial period of the threshold voltage compensation period (P12 of FIG. 6) of the pixel PXija. ) Can be small enough to be in a turn-on state.
- the size of the initialization voltage is the data voltage DTij supplied to the threshold voltage compensation period (P12 of FIG. 6) of the pixel PXija (FIG. 6). Reference).
- the size of the initialization voltage may be less than the size of the second power voltage.
- the initialization voltage may be greater than the second power supply voltage, but at this time, the initialization voltage is the sum of the emission threshold voltage of the light emitting diode LDa and the second power supply voltage. It can be smaller than one.
- redundant description of the initialization voltage will be omitted.
- 4 to 11 are diagrams for explaining an exemplary driving method of the pixel of FIG. 2.
- a first scan signal having a turn-on level (eg, a logic low level) is applied to the first scan line GWi. Can be.
- a third scan signal having a turn-on level may be applied to the third scan line Gii.
- a second scan signal having a turn-off level (eg, a logic high level) may be applied to the second scan line GBi.
- a turn-off level may be applied to the emission line Ei.
- the data voltage DT(i-1)j for the previous pixel row may be applied to the data line Dj.
- the previous pixel row refers to i to the gate electrode of the scan transistor. - May mean pixels to which the first first scan line is connected.
- the transistors T1a, T2a, T6a, and T7a may be in a turn-on state, and the transistors T3a, T4a, and T5a may be in a turn-off state.
- the data line Dj may be connected to the second node N2a through the transistors T2a, T1a, and T7a. Further, the initialization line INTL may be connected to the second node N2a through the transistors T6a and T7a. At this time, due to a difference in load between the data line Dj and the initialization line INTL, the voltage of the second node N2a may become the initialization voltage.
- the first period P11 may be referred to as a gate initialization period.
- a first scan signal having a turn-on level may be applied to the first scan line GWi.
- a third scan signal having a turn-off level may be applied to the third scan line Gii.
- a second scan signal having a turn-off level may be applied to the second scan line GBi.
- a light emission signal of a turn-off level may be applied to the light emission line Ei.
- the data voltage DTij for the pixel PXija may be applied to the data line Dj.
- the transistors T1a, T2a, and T7a may be in a turn-on state, and the transistors T3a, T4a, T5a, and T6a may be in a turn-off state.
- the data line Dj may be connected to the second node N2a through the transistors T2a, T1a, and T7a. Accordingly, the voltage of the second node N2a may be a compensation voltage in which the threshold voltage of the first transistor T1a is reduced from the data voltage DTij (see Equation 1).
- VN2a is the voltage of the second node N2a
- DTij is the data voltage DTij
- Vtrth is the threshold voltage of the first transistor T1a.
- threshold voltages of the first transistors T1a of the pixels PXija may be different from each other.
- the second period P12 may be referred to as a threshold voltage compensation period.
- the voltage of the first node N1a may be as follows (see Equation 2).
- VN1a is the voltage of the first node N1a
- ELVSS is the voltage of the second power line ELVSSL
- Vldth is the emission threshold voltage of the light emitting diode LDa.
- the light emitting diode LDa is in a non-emission state because it is not supplied with a driving current, but the emission threshold voltage is charged due to the driving current supplied from the previous frame.
- the emission threshold voltages of the light emitting diodes LDa of the pixels PXija may be different from each other.
- the light emitting diode LDa may emit light after the emission threshold voltage is charged.
- a first scan signal having a turn-off level may be applied to the first scan line GWi.
- a third scan signal having a turn-off level may be applied to the third scan line Gii.
- a second scan signal having a turn-on level may be applied to the second scan line GBi.
- a light emission signal of a turn-off level may be applied to the light emission line Ei.
- the data voltage DT(i+1)j for the next pixel row may be applied to the data line Dj.
- the next pixel row may mean pixels to which the i+1 th first scan line is connected to the gate electrode of the scan transistor.
- the transistors T1a and T3a may be in a turn-on state, and the transistors T2a, T4a, T5a, T6a, and T7a may be in a turn-off state.
- the voltage of the first node N1a becomes the initialization voltage.
- the initializing voltage is the same as the second power supply voltage
- the voltage charged in the light emitting diode LDa is initialized to 0V.
- the light emitting diode LDa may be pre-charged with a constant voltage.
- a reverse bias voltage is applied to the light emitting diode LDa, thereby extending the life of the light emitting diode LDa.
- the third period P13 may be referred to as an anode initialization period.
- dVN1a is the voltage fluctuation amount of the first node N1a
- VINT is the initialization voltage of the initialization line INTL
- ELVSS is the voltage of the second power line ELVSSL
- Vldth is the emission threshold of the light emitting diode LDa. Voltage.
- the voltage of the second node N2a is varied based on the voltage fluctuation amount of the first node N1a and the capacity ratio of the first capacitor C1a and the second capacitor C2a (see Equation 4).
- dVN2a is the voltage fluctuation amount of the second node N2a
- CC1a is the capacity of the first capacitor C1a
- CC2a is the capacity of the second capacitor C2a
- dVN1a is the voltage fluctuation amount of the first node N1a to be.
- the voltage of the second node N2a can be expressed by Equation 5 below.
- VN2a is the voltage of the second node N2a
- DTij is the data voltage DTij
- Vtrth is the threshold voltage of the first transistor T1a
- dVN2a is the voltage fluctuation amount of the second node N2a.
- a first scan signal having a turn-off level may be applied to the first scan line GWi.
- a third scan signal having a turn-off level may be applied to the third scan line Gii.
- a second scan signal having a turn-off level may be applied to the second scan line GBi.
- a light emission signal of a turn-on level may be applied to the light emission line Ei.
- the transistors T1a, T4a, and T5a may be in a turn-on state, and the transistors T2a, T3a, T6a, and T7a may be in a turn-off state.
- the light emitting diode LDa may emit light according to the driving current.
- the fourth period P14 may be referred to as a light emission period.
- the magnitude of the driving current may be determined according to a voltage difference between the second node N2a and the third node N3a.
- the voltage of the third node N3a may be substantially the same as the first power voltage.
- Ids is the driving current flowing between the drain electrode and the source electrode of the first transistor T1a, up is the mobility of the first transistor T1a, and Cox is the channel of the first transistor T1a, Is the capacitance formed by the insulating layer and the gate electrode, W is the width of the channel of the first transistor T1a, L is the length of the channel of the first transistor T1a, ELVDD is the first power supply voltage, and VN2a is The voltage of the second node N2a and Vtrth is the threshold voltage of the first transistor T1a.
- Equation 6 may be summarized as in Equation 7 below.
- the emission threshold voltage Vldth increases. That is, in order for the light emitting diode LDa after deterioration to emit light with the same luminance as before deterioration, a larger driving current is required than before deterioration.
- the driving current Ids increases as Vldth increases. If necessary, the amount of increase in the driving current Ids can be adjusted by adjusting the capacity ratio of the first capacitor C1a and the second capacitor C2a according to the pixel PXij. Accordingly, according to the present exemplary embodiment, deterioration of the light emitting diode LDa can be compensated by the pixel itself.
- the pixel PXija has the advantage of effectively reducing the first leakage current while maintaining the same number of transistors as the conventional 7T1C pixel.
- the leakage current is reduced, it is possible to improve black expression, enable low-frequency driving, and reduce power consumption.
- FIG. 12 is a diagram for describing a pixel according to a second embodiment of the present invention.
- the pixel PXijb includes transistors T1b, T2b, T3b, T4b, T5b, T6b, T7b, T8b, capacitors C1b, C2b, and light emission. It includes a diode LDb.
- the pixel PXijb has substantially the same other components except for the seventh transistor T7b and the eighth transistor T8b, and thus redundant descriptions are omitted.
- the seventh transistor T7b may have a gate electrode connected to the first scan line GWi, a first electrode, and a second electrode connected to the fourth node N4b.
- the gate electrode is connected to the first scan line GWi, the first electrode is connected to the first electrode of the seventh transistor T7b, and the second electrode is connected to the second node N2b. Can be connected.
- FIG. 13 is a diagram for describing a pixel according to a third exemplary embodiment of the present invention.
- the pixel PXijc includes transistors T1c, T2c, T3c, T4c, T5c, T6c, T7c, T8c, capacitors C1c, C2c, and light emission. Includes a diode LDc.
- the pixel PXijc has substantially the same configuration except for the sixth transistor T6c, the seventh transistor T7c, and the eighth transistor T8c. Description is omitted.
- the sixth transistor T6c may have a gate electrode connected to the third scan line Gii, a first electrode, and a second electrode connected to the initialization line INTL.
- the seventh transistor T7c has a gate electrode connected to the first scan line GWi, a first electrode connected to the second node N2c, and a second electrode connected to the first electrode of the sixth transistor T6c. Can be connected.
- the gate electrode is connected to the first scan line GWi, the first electrode is connected to the first electrode of the sixth transistor T6c, and the second electrode is connected to the fourth node N4c. Can be connected.
- the second leakage current path is effectively It has the advantage of being able to block it.
- FIG. 14 is a diagram for explaining a pixel according to a fourth embodiment of the present invention
- FIG. 15 is a diagram for explaining a driving method according to another embodiment of the present invention.
- a pixel PXijd according to a fourth embodiment of the present invention includes transistors T1d, T2d, T3d, T4d, T5d, T6d, T7d, T8d, capacitors C1d and C2d, and light emission. It includes a diode LDd.
- the pixel PXijd has substantially the same components except for the eighth transistor T8d, and thus, a duplicate description is omitted.
- the eighth transistor T8d may have a gate electrode connected to the third scan line Gii, a first electrode connected to the second node N2d, and a second electrode connected to the fourth node N4d.
- the pixel PXijd may be driven according to the driving method of FIG. 15.
- pulses of the turn-on level of the first to third scan signals may have the same length and different phases. Accordingly, as described above, since the first to third scan drivers 131, 132, and 133 may be integrally implemented, an area occupied by the scan driver 13 and construction cost can be reduced.
- the driving method of FIG. 15 is substantially the same as the driving method of FIGS. 4 to 11, except that the first scan signal applied to the first scan line GWi is at a turn-off level in the first period P21. Do. Therefore, a redundant description of the driving method of FIG. 15 will be omitted.
- the pixel PXijd may be driven according to the driving method of FIGS. 4 to 11 described above.
- 16 is a diagram for describing a pixel according to a fifth exemplary embodiment of the present invention.
- the pixel PXije according to the fifth embodiment of the present invention includes transistors T1e, T2e, T3e, T4e, T5e, T6e, T7e, T8e, a first capacitor C1e, and a light emitting diode. (LDe).
- the pixel PXije is substantially the same as the pixel PXija of FIG. 3 except for the configuration of the seventh transistor T7e, the eighth transistor T8e, and the capacitor, and thus, a duplicate description will be omitted. .
- the seventh transistor T7e may have a gate electrode connected to the first scan line GWi, a first electrode, and a second electrode connected to the fourth node N4e.
- the gate electrode is connected to the first scan line GWi, the first electrode is connected to the first electrode of the seventh transistor T7e, and the second electrode is connected to the second node N2e. Can be connected.
- the first leakage current path can be effectively blocked. There is an advantage that there is.
- the pixel PXije does not include a second capacitor.
- the first capacitor C1e performs a voltage maintenance function of the second node N2e. Accordingly, since the pixel PXije can remove one capacitor, the occupied area of the pixel PXije can be reduced compared to other embodiments.
- FIG. 17 is a diagram illustrating a pixel according to a sixth embodiment of the present invention.
- the pixel PXijf includes transistors T1f, T2f, T3f, T4f, T5f, T6f, T7f, T8f, a first capacitor C1f, and a light emitting diode. (LDf).
- the pixel PXijf has substantially the same configuration as the pixel PXija of FIG. 3 except for the configuration of the sixth transistor T6f, the seventh transistor T7f, the eighth transistor T8f, and the capacitor. , Redundant description is omitted.
- the sixth transistor T6f may have a gate electrode connected to the first scan line GWi, a first electrode connected to the initialization line INTL, and a second electrode connected to the fourth node N4f.
- the seventh transistor T7f may have a gate electrode connected to the first scan line GWi, a first electrode connected to the second node N2f, and a second electrode connected to the initialization line INTL.
- the eighth transistor T8f may have a gate electrode connected to the third scan line Gii, a first electrode connected to the second node N2f, and a second electrode connected to the initialization line INTL.
- the second leakage current path It has the advantage of being able to block effectively.
- the pixel PXijf does not include a second capacitor.
- the first capacitor C1f performs a voltage maintenance function of the second node N2f. Accordingly, the pixel PXijf can remove one capacitor, thereby reducing the occupied area of the pixel pixel PXijf compared to other embodiments.
- the pixel PXijf may be driven according to the driving method of FIG. 15.
- pulses of the turn-on level of the first to third scan signals may have the same length and different phases. Accordingly, as described above, since the first to third scan drivers 131, 132, and 133 may be integrally implemented, an area occupied by the scan driver 13 and construction cost can be reduced.
- FIG. 18 is a diagram for describing a pixel according to a seventh embodiment of the present invention.
- the pixel PXija' of FIG. 18 is a type in which the second capacitor C2a is excluded from the pixel PXija of FIG. 3.
- the first capacitor C1a performs a voltage maintenance function of the second node N2a. Accordingly, the pixel PXija' can remove one capacitor, thereby reducing the occupied area of the pixel PXija' compared to other embodiments.
- FIG. 19 is a diagram for describing a pixel according to an eighth embodiment of the present invention.
- the pixel PXijc' of FIG. 19 is a type in which the second capacitor C2c is excluded from the pixel PXijc of FIG. 13.
- the pixel PXijc' Even if the pixel PXijc' does not include the second capacitor, the first capacitor C1c performs a voltage maintenance function of the second node N2c. Accordingly, the pixel PXijc' can remove one capacitor, thereby reducing the occupied area of the pixel PXijc' compared to other embodiments.
- FIG. 20 is a diagram for describing a pixel according to a ninth embodiment of the present invention.
- the second capacitor C2d is excluded from the pixel PXijd of FIG. 14.
- the first capacitor C1d performs a voltage maintaining function of the second node N2d. Accordingly, the pixel PXijd' can remove one capacitor, thereby reducing the occupied area of the pixel PXijd' compared to other embodiments.
- 21 is a diagram for describing a pixel according to a tenth embodiment of the present invention.
- the pixel PXijf' of FIG. 21 is a type in which the second capacitor C2f' is added from the pixel PXijf of FIG. 17.
- the compensation voltage of the second node N2f recorded in the threshold voltage compensation period can be more robustly maintained (without distortion) than when only the first capacitor C1f is present. There is an advantage.
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Abstract
Description
Claims (20)
- 애노드가 제1 노드에 연결된 발광 다이오드;제1 전극이 상기 제1 노드에 연결되고, 제2 전극이 제2 노드에 연결된 제1 커패시터;게이트 전극이 상기 제2 노드에 연결되고, 제1 전극이 제3 노드에 연결되고, 제2 전극이 제4 노드에 연결된 제1 트랜지스터; 및게이트 전극이 제1 주사 라인에 연결되고, 제1 전극이 데이터 라인에 연결되고, 제2 전극이 상기 제3 노드에 연결된 제2 트랜지스터를 포함하는,화소.
- 제1 항에 있어서,게이트 전극이 제2 주사 라인에 연결되고, 제1 전극이 초기화 라인에 연결되고, 제2 전극이 상기 제1 노드에 연결된 제3 트랜지스터를 더 포함하는,화소.
- 제2 항에 있어서,게이트 전극이 발광 라인에 연결되고, 제1 전극이 상기 제4 노드에 연결되고, 제2 전극이 상기 제1 노드에 연결된 제4 트랜지스터를 더 포함하는,화소.
- 제3 항에 있어서,게이트 전극이 상기 발광 라인에 연결되고, 제1 전극이 제1 전원 라인에 연결되고, 제2 전극이 상기 제3 노드에 연결된 제5 트랜지스터를 더 포함하는,화소.
- 제4 항에 있어서,게이트 전극이 제3 주사 라인에 연결되고, 제1 전극이 상기 제4 노드에 연결되고, 제2 전극이 상기 초기화 라인에 연결된 제6 트랜지스터를 더 포함하는,화소.
- 제5 항에 있어서,게이트 전극이 상기 제1 주사 라인에 연결되고, 제1 전극이 상기 제2 노드에 연결되고, 제2 전극이 상기 제4 노드에 연결된 제7 트랜지스터를 더 포함하는,화소.
- 제6 항에 있어서,제1 전극이 상기 제1 전원 라인에 연결되고, 제2 전극이 상기 제2 노드에 연결된 제2 커패시터를 더 포함하는,화소.
- 제7 항에 있어서,게이트 전극이 상기 제3 주사 라인에 연결되고, 제1 전극이 상기 제2 노드에 연결되고, 제2 전극이 상기 제4 노드에 연결된 제8 트랜지스터를 더 포함하는,화소.
- 제5 항에 있어서,게이트 전극이 상기 제1 주사 라인에 연결되고, 제1 전극을 포함하고, 제2 전극이 상기 제4 노드에 연결된 제7 트랜지스터; 및게이트 전극이 상기 제1 주사 라인에 연결되고, 제1 전극이 상기 제7 트랜지스터의 제1 전극과 연결되고, 제2 전극이 상기 제2 노드에 연결된 제8 트랜지스터를 더 포함하는,화소.
- 제9 항에 있어서,제1 전극이 상기 제1 전원 라인에 연결되고, 제2 전극이 상기 제2 노드에 연결된 제2 커패시터를 더 포함하는,화소.
- 제4 항에 있어서,게이트 전극이 상기 제1 주사 라인에 연결되고, 제1 전극이 상기 초기화 라인에 연결되고, 제2 전극이 상기 제4 노드에 연결된 제6 트랜지스터를 더 포함하는,화소.
- 제11 항에 있어서,게이트 전극이 상기 제1 주사 라인에 연결되고, 제1 전극이 상기 제2 노드에 연결되고, 제2 전극이 상기 초기화 라인에 연결된 제7 트랜지스터; 및게이트 전극이 상기 제3 주사 라인에 연결되고, 제1 전극이 상기 제2 노드에 연결되고, 제2 전극이 상기 초기화 라인에 연결된 제8 트랜지스터를 더 포함하는,화소.
- 제4 항에 있어서,게이트 전극이 제3 주사 라인에 연결되고, 제1 전극을 포함하고, 제2 전극이 상기 초기화 라인에 연결된 제6 트랜지스터;게이트 전극이 상기 제1 주사 라인에 연결되고, 제1 전극이 상기 제2 노드에 연결되고, 제2 전극이 상기 제6 트랜지스터의 제1 전극과 연결된 제7 트랜지스터; 및게이트 전극이 상기 제1 주사 라인에 연결되고, 제1 전극이 상기 제6 트랜지스터의 제1 전극과 연결되고, 제2 전극이 상기 제4 노드에 연결된 제8 트랜지스터를 더 포함하는,화소.
- 제13 항에 있어서,제1 전극이 상기 제1 전원 라인에 연결되고, 제2 전극이 상기 제2 노드에 연결된 제2 커패시터를 더 포함하는,화소.
- 화소의 구동 방법에 있어서,상기 화소는:애노드가 제1 노드에 연결된 발광 다이오드;제1 전극이 상기 제1 노드에 연결되고, 제2 전극이 제2 노드에 연결된 제1 커패시터;게이트 전극이 상기 제2 노드에 연결되고, 제1 전극이 제3 노드에 연결되고, 제2 전극이 제4 노드에 연결된 제1 트랜지스터; 및게이트 전극이 제1 주사 라인에 연결되고, 제1 전극이 데이터 라인에 연결되고, 제2 전극이 상기 제3 노드에 연결된 제2 트랜지스터를 포함하고,상기 구동 방법은:상기 제2 노드를 초기화 라인과 연결시키고, 상기 제2 트랜지스터를 턴-온시키는 단계;상기 제2 트랜지스터의 턴-온 상태를 유지한 상태에서, 상기 제2 노드를 상기 초기화 라인과 분리시키는 단계;상기 제2 트랜지스터를 턴-오프시키는 단계; 및상기 제2 트랜지스터가 턴-오프 상태를 유지한 상태에서, 상기 제1 노드를 상기 초기화 라인과 연결시키는 단계를 포함하는,화소의 구동 방법.
- 제15 항에 있어서,상기 화소는:게이트 전극이 제2 주사 라인에 연결되고, 제1 전극이 상기 초기화 라인에 연결되고, 제2 전극이 상기 제1 노드에 연결된 제3 트랜지스터를 더 포함하고,상기 제1 노드를 상기 초기화 라인과 연결시키는 단계에서, 상기 제3 트랜지스터를 턴-온시키는,화소의 구동 방법.
- 제16 항에 있어서,상기 화소는:게이트 전극이 발광 라인에 연결되고, 제1 전극이 상기 제4 노드에 연결되고, 제2 전극이 상기 제1 노드에 연결된 제4 트랜지스터; 및게이트 전극이 상기 발광 라인에 연결되고, 제1 전극이 제1 전원 라인에 연결되고, 제2 전극이 상기 제3 노드에 연결된 제5 트랜지스터를 더 포함하고,상기 구동 방법은:상기 제3 트랜지스터를 턴-오프시키는 단계; 및상기 제3 트랜지스터의 턴-오프를 유지한 상태에서, 상기 제4 트랜지스터 및 상기 제5 트랜지스터를 턴-온시키는 단계를 더 포함하는,화소의 구동 방법.
- 화소의 구동 방법에 있어서,상기 화소는:애노드가 제1 노드에 연결된 발광 다이오드;제1 전극이 상기 제1 노드에 연결되고, 제2 전극이 제2 노드에 연결된 제1 커패시터;게이트 전극이 상기 제2 노드에 연결되고, 제1 전극이 제3 노드에 연결되고, 제2 전극이 제4 노드에 연결된 제1 트랜지스터; 및게이트 전극이 제1 주사 라인에 연결되고, 제1 전극이 데이터 라인에 연결되고, 제2 전극이 상기 제3 노드에 연결된 제2 트랜지스터를 포함하고,상기 구동 방법은:상기 제2 트랜지스터의 턴-오프 상태를 유지한 상태에서, 상기 제2 노드를 초기화 라인과 연결시키는 단계;상기 제2 노드를 상기 초기화 라인과 분리시키는 단계;상기 제2 노드가 상기 초기화 라인과 분리된 상태에서, 상기 제2 트랜지스터를 턴-온시키는 단계;상기 제2 트랜지스터를 턴-오프시키는 단계; 및상기 제2 트랜지스터가 턴-오프 상태를 유지한 상태에서, 상기 제1 노드를 상기 초기화 라인과 연결시키는 단계를 포함하는,화소의 구동 방법.
- 제18 항에 있어서,상기 화소는:게이트 전극이 제2 주사 라인에 연결되고, 제1 전극이 상기 초기화 라인에 연결되고, 제2 전극이 상기 제1 노드에 연결된 제3 트랜지스터를 더 포함하고,상기 제1 노드를 상기 초기화 라인과 연결시키는 단계에서, 상기 제3 트랜지스터를 턴-온시키는,화소의 구동 방법.
- 제19 항에 있어서,상기 화소는:게이트 전극이 발광 라인에 연결되고, 제1 전극이 상기 제4 노드에 연결되고, 제2 전극이 상기 제1 노드에 연결된 제4 트랜지스터; 및게이트 전극이 상기 발광 라인에 연결되고, 제1 전극이 제1 전원 라인에 연결되고, 제2 전극이 상기 제3 노드에 연결된 제5 트랜지스터를 더 포함하고,상기 구동 방법은:상기 제3 트랜지스터를 턴-오프시키는 단계; 및상기 제3 트랜지스터의 턴-오프를 유지한 상태에서, 상기 제4 트랜지스터 및 상기 제5 트랜지스터를 턴-온시키는 단계를 더 포함하는,화소의 구동 방법.
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| CN202080026800.4A CN113678190B (zh) | 2019-05-16 | 2020-02-20 | 像素和用于驱动像素的方法 |
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| CN112992055A (zh) * | 2021-04-27 | 2021-06-18 | 武汉华星光电半导体显示技术有限公司 | 像素电路及显示面板 |
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| CN112150967B (zh) * | 2020-10-20 | 2024-03-01 | 厦门天马微电子有限公司 | 一种显示面板、驱动方法及显示装置 |
| WO2023079674A1 (ja) * | 2021-11-05 | 2023-05-11 | シャープディスプレイテクノロジー株式会社 | 表示装置およびその駆動方法 |
| WO2023201470A1 (zh) * | 2022-04-18 | 2023-10-26 | 京东方科技集团股份有限公司 | 像素电路及其驱动方法、显示面板、显示装置 |
| WO2026090940A1 (zh) * | 2024-10-30 | 2026-05-07 | 京东方科技集团股份有限公司 | 显示面板的驱动方法及显示装置 |
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| CN113678190A (zh) | 2021-11-19 |
| CN113678190B (zh) | 2025-02-25 |
| EP3971876B1 (en) | 2025-06-18 |
| US11587502B2 (en) | 2023-02-21 |
| US20220208084A1 (en) | 2022-06-30 |
| EP3971876A1 (en) | 2022-03-23 |
| KR102724648B1 (ko) | 2024-11-04 |
| KR20200133077A (ko) | 2020-11-26 |
| EP3971876A4 (en) | 2023-01-18 |
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