WO2024136408A1 - 디스플레이 모듈 - Google Patents
디스플레이 모듈 Download PDFInfo
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- WO2024136408A1 WO2024136408A1 PCT/KR2023/021002 KR2023021002W WO2024136408A1 WO 2024136408 A1 WO2024136408 A1 WO 2024136408A1 KR 2023021002 W KR2023021002 W KR 2023021002W WO 2024136408 A1 WO2024136408 A1 WO 2024136408A1
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- driving circuit
- pixels
- substrate
- display module
- area
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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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- 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
- H10K59/88—Dummy elements, i.e. elements having non-functional features
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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
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0404—Matrix technologies
- G09G2300/0413—Details of dummy pixels or dummy lines in flat panels
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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
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
-
- 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
- G09G2310/0264—Details of driving circuits
- G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
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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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Definitions
- the present disclosure relates to a display module, and more specifically, to a display device including a pixel array made of self-luminous elements.
- a conventional bezel-less display module is designed to operate the display module by providing a driving circuit (for example, a gate driver) between pixels.
- a driving circuit for example, a gate driver
- the active area and bezel are not distinguished on the substrate, signal coupling occurs between pixels and driving circuits, and the design density is uneven on the substrate.
- Non-uniformity problems such as decreased luminance occurred.
- a specific area e.g., bezel area
- the driving circuit is a limitation in terms of design when implementing one display device through a plurality of display modules, especially when using a plurality of displays.
- modules are combined to form a large-area display panel, there is a problem in providing a seamless image due to the bezel present at the combined portion.
- a display module includes a substrate, a first driving circuit provided in a vertical form in a central area on the substrate, formed on the left area of the substrate with respect to the first driving circuit, and arranged in a matrix form.
- Each pixel of the first plurality of pixels and each pixel of the second plurality of pixels includes a plurality of inorganic light-emitting elements, and each of the first pixel array and the second pixel array is separated by a preset distance from the pixel array. It is separated from the first driving circuit.
- the display module further includes a plurality of second driving circuits formed on the substrate, wherein the plurality of second driving circuits drive a plurality of inorganic light emitting elements of the first plurality of pixels and the second plurality of pixels.
- the first driving circuit generates control signals based on clock signals applied through at least one clock line, and provides the generated control signals to the plurality of second driving circuits to The driving circuit can be driven.
- the at least one clock line may overlap the first driving circuit on the substrate.
- the vertical shape of the first driving circuit divides the substrate into the left area and the right area, the first plurality of pixels are in close contact with each other, and the second plurality of pixels are in close contact with each other. can be contacted.
- the first plurality of pixels may be in direct contact with each other, and the second plurality of pixels may be in direct contact with each other.
- the plurality of inorganic light-emitting devices of the first pixel array may be spaced apart from each other, and the plurality of inorganic light-emitting devices of the second pixel array may be spaced apart from each other.
- the upper partial area and the lower partial area in the left area may be a first redundant area in which the inorganic light-emitting element is not disposed, and the upper partial area and the lower partial area in the right area may be a second redundant area in which the inorganic light-emitting element is not disposed. there is.
- the display module further includes a first dummy first driving circuit disposed in a partial area outside the left area and a second dummy first driving circuit arranged in a partial area outside the right area, wherein the first dummy first driving circuit is disposed in a partial area outside the left area.
- Each of the first driving circuit and the second dummy first driving circuit may maintain the same potential as the first driving circuit.
- the left area of the substrate and the right area of the substrate may be symmetrical in the vertical shape of the first driving circuit.
- Each of the first driving circuit, the first dummy first driving circuit, and the second dummy first driving circuit may include a thin film transistor (TFT).
- TFT thin film transistor
- a display module includes a substrate, a first driving circuit disposed on the substrate, dividing the substrate into a first side and a second side, and a first plurality of pixels, and the first side of the substrate. It includes a first pixel array, a second plurality of pixels, disposed on the second side of the substrate, the first plurality of pixels, and the second plurality of pixels in a matrix form. arranged, each pixel of the first plurality of pixels and each pixel of the second plurality of pixels includes a plurality of inorganic light-emitting elements, and each of the first pixel array and the second pixel array is separated by a preset distance from the It is separated from the first driving circuit.
- the display module further includes a plurality of second driving circuits disposed on the substrate, at least one data line disposed on the substrate, and at least one clock line disposed on the substrate, and the plurality of second driving circuits are disposed on the substrate.
- a driving circuit drives a plurality of inorganic light emitting elements of the first plurality of pixels and the second plurality of pixels, and the first driving circuit operates based on clock signals applied through the at least one clock line. Control signals may be generated, and the generated control signals may be provided to the plurality of second driving circuits to drive the plurality of second driving circuits.
- the at least one clock line may overlap the first driving circuit on the substrate.
- Adjacent pixels of the first plurality of pixels may be in close contact with each other, and adjacent pixels of the second plurality of pixels may be in direct contact with each other.
- Adjacent pixels of the first plurality of pixels may directly contact each other, and adjacent pixels of the second plurality of pixels may directly contact each other.
- Adjacent inorganic light emitting elements of the plurality of inorganic light emitting elements may be arranged to be spaced apart from each other.
- the display module further includes a first redundant area of the upper edge partial area and the lower edge partial area of the first side, and a second redundant area of the upper edge partial area and the lower edge partial area of the second side, Inorganic light emitting elements may not be disposed in the first redundant area and the second redundant area.
- the display module includes a first dummy first driving circuit disposed at an edge of the first side opposite to the first driving circuit and a second dummy first driving circuit disposed at an edge of the second side opposite to the first driving circuit. It may further include a dummy first driving circuit, wherein each of the first dummy first driving circuit and the second dummy first driving circuit may maintain the same potential as the first driving circuit.
- the first side and the second side may be symmetrical across the first driving circuit.
- a display module includes a substrate, a first plurality of pixels, a first pixel array disposed on a first side of the substrate, a second plurality of pixels, and disposed on a second side of the substrate. a second pixel array, and a first driving circuit disposed between the first pixel array and the second pixel array on the substrate, wherein each of the first pixel array and the second pixel array is separated from the first pixel array by a predetermined distance. It is separated from the first driving circuit.
- 1 is a diagram for explaining the pixel structure of a conventional display module.
- Figure 2 is a block diagram for explaining a display module according to an embodiment of the present disclosure.
- FIG. 3 is a diagram for explaining the pixel structure of a display module according to an example of the present disclosure.
- FIG. 4 is a diagram illustrating the distance between pixel arrays according to an example of the present disclosure.
- FIG. 5 is a diagram for explaining the pixel structure of a display module according to an example of the present disclosure.
- FIG. 6 is a diagram illustrating the distance between pixel arrays according to an example of the present disclosure.
- a component e.g., a first component is “(operatively or communicatively) coupled with/to” another component (e.g., a second component).
- another component e.g., a second component.
- any component may be directly connected to the other component or may be connected through another component (e.g., a third component).
- a component e.g., a first component
- a second component it means that there is a connection between said component and said other component.
- other components e.g., a third component do not exist.
- the expression “at least one of A, B, or C” means “A only,” “B only,” “C only,” “both A and B,” “both A and C,” “B and C.” It represents “all” or “all of A, B, and C.”
- 1 is a diagram for explaining the pixel structure of a conventional display module.
- a conventional display module may include pixel areas 12 including a plurality of inorganic light emitting devices 14 on a substrate 16.
- a conventional bezel-less display module is designed to operate the display module by providing a driving circuit (eg, gate driver) between pixels.
- a driving circuit eg, gate driver
- the conventional display module had a problem in that the active area and bezel were not distinguished on the board, signal coupling occurred between pixels and the driving circuit, and the design density was not uniform on the board.
- a conventional display module 10 includes a plurality of pixels disposed (or arranged) in a matrix form, that is, a pixel array.
- the pixel array includes a plurality of row lines or a plurality of column lines.
- row lines may be called horizontal lines
- column lines may be called vertical lines.
- area A contains a pixel row without a driving circuit
- area B contains a pixel row with a driving circuit.
- the conventional display module 10 includes a first driving circuit 20 (e.g., a gate driver or a scan driver) between a plurality of pixels, and the first driving circuit 20 ) may include a clock line 22 for applying a clock signal (or a Gate In Panel (GIP) control signal).
- a first driving circuit 20 e.g., a gate driver or a scan driver
- the first driving circuit 20 may include a clock line 22 for applying a clock signal (or a Gate In Panel (GIP) control signal).
- GIP Gate In Panel
- the first driving circuit 20 is arranged in the horizontal direction between a plurality of pixels in area B, and a data line (data line) corresponding to the pixels arranged between the plurality of first driving circuits 20 24) (or Pixel line) overlaps with the plurality of first driving circuits 20, so there is a risk of signal coupling phenomenon occurring, and the driving (or , signal output) affects adjacent pixels (for example, a difference in luminance occurs with other pixels).
- Figure 2 is a block diagram for explaining a display module according to an embodiment of the present disclosure.
- the display module 100 includes a substrate 110, a first driving circuit 120, a second driving circuit 130, and a plurality of inorganic light-emitting devices 140. may include.
- a first driving circuit 120 is provided on the substrate 110, and the first driving circuit 120 may be in a vertical form.
- the first driving circuit 120 may be provided in a vertical shape in the central area of the substrate.
- the display module 100 is formed in the left area of the substrate 110 with respect to the first driving circuit 120, and each pixel including a plurality of inorganic light-emitting devices 140 is arranged in a matrix form. may include a first pixel array.
- the display module 100 is formed on the right side of the substrate 110 with respect to the first driving circuit 120, and each pixel including a plurality of inorganic light-emitting devices 140 is arranged in a matrix form. May include a pixel array.
- the display module 100 may have a structure in which a driving circuit layer 112 is formed on a substrate 110 and an inorganic light-emitting device 140 is disposed on the driving circuit layer 112.
- FIG. 3 is a diagram for explaining the pixel structure of a display module according to an example of the present disclosure.
- the display module 100 may include a first driving circuit 120 provided in a vertical shape in a central area on the substrate 110.
- the first driving circuit 120 may divide the substrate 110 into a left area and a right area.
- the display module 100 is formed in the left area of the substrate 110 with respect to the first driving circuit 120, and each pixel 112 including a plurality of inorganic light-emitting devices 140 Each pixel includes a first pixel array 150 arranged in a matrix form, is formed on the right side of the substrate 110 with respect to the first driving circuit 120, and includes a plurality of inorganic light-emitting devices 140. 112 may include a second pixel array 160 arranged in a matrix form.
- each of the first pixel array 150 and the second pixel array 160 may be spaced apart from the first driving circuit 120 by a preset distance.
- a plurality of pixels 112 included in the first pixel array 150 may be arranged closely to each other.
- the plurality of pixels 112 included in the first pixel array 150 may be arranged in contact with each other in a matrix form.
- the plurality of pixels 112 included in the second pixel array 160 may be arranged closely to each other.
- the plurality of pixels 112 included in the second pixel array 160 may be arranged in a matrix form. It can be placed in contact with .
- each of the plurality of pixels 112 may include three types of subpixels, such as a red (R) subpixel, a green (G) subpixel, and a blue (B) subpixel.
- Each pixel includes a plurality of inorganic light-emitting elements 140 constituting sub-pixels (e.g., R, G, B) and emits light according to the driving current provided from the second driving circuit 130. do.
- each of the plurality of pixels 112 included in each of the first pixel array 150 and the second pixel array 160 has an R inorganic light emitting device corresponding to the R subpixel, and a G corresponding to the G subpixel. It may include three types of inorganic light-emitting devices 140, such as an inorganic light-emitting device and a B inorganic light-emitting device corresponding to a B subpixel.
- each pixel 112 may include three blue inorganic light emitting elements.
- a color filter for implementing R, G, and B colors may be provided on each inorganic light-emitting device 140.
- the color filter may be a quantum dot (QD) color filter, but the present disclosure is not limited thereto.
- the inorganic light emitting devices 140 refer to light emitting devices manufactured using inorganic materials, which are different from OLED (Organic Light Emitting Diode) manufactured using organic materials.
- OLED Organic Light Emitting Diode
- the inorganic light emitting devices 140 may be micro LEDs (Light Emitting Diodes) ( ⁇ -LEDs) having a size of 100 micrometers ( ⁇ m) or less.
- the display module 100 becomes a micro LED display module in which each subpixel is implemented as a micro LED.
- a micro LED display module is composed of a plurality of inorganic light emitting diodes (inorganic LEDs) each measuring less than 100 micrometers.
- Micro LED display modules offer better contrast, response time and energy efficiency compared to liquid crystal display (LCD) panels that require a backlight. Meanwhile, both organic light-emitting diodes (OLED) and micro LED are energy efficient, but micro LED provides better performance than OLED in terms of brightness, luminous efficiency, and lifespan.
- OLED organic light-emitting diodes
- micro LED provides better performance than OLED in terms of brightness, luminous efficiency, and lifespan.
- the micro LED display module 100 uses the gate electrode of a TFT (Thin Film Transistor) or A driving voltage may be provided to the second driving circuit 130 through a metal layer separate from the metal layer on which the source or drain electrode is formed.
- TFT Thin Film Transistor
- the inorganic light-emitting devices 140 are not necessarily limited to micro LEDs.
- a second driving circuit 130 may be provided in each subpixel to drive the inorganic light emitting device 140 constituting the subpixel based on the data voltage applied through the data line 124. Since the second driving circuit 130 is provided for each subpixel, it may also be called a subpixel circuit.
- a plurality of second driving circuits 130 formed on the substrate 110 are provided for each pixel 112, and a plurality of second driving circuits 130 included in each pixel 112 corresponding to the data lines 124 are provided.
- the inorganic light emitting device 140 can be driven.
- the first driving circuit 120 generates control signals for driving the plurality of second driving circuits 130 based on clock signals applied through the clock lines 122, and the generated control Signals may be provided to the plurality of second driving circuits 130.
- a second driving circuit 130 is installed in the area between the first pixel array 150 and the second pixel array 160 in the display module 100.
- a first driving circuit 120 may be provided to generate a control signal for driving and provide the generated control signal to the second driving circuit 130.
- the first driving circuit 120 may be, for example, a gate driver circuit (or scan driver circuit).
- the first pixel array 150 and the second pixel array 160 are disposed on the substrate 110, and in the active area of the display module 100 where the image is displayed, the first driving circuit Since 120 and the second driving circuit 130 are provided, it is possible to implement a bezel-less display module 100.
- the display module 100 does not have pixels 112 disposed adjacent to the first driving circuit 120, so the first driving circuit 120 Even when driving, a problem in which the luminance of a specific pixel deteriorates may not occur.
- the data line 124 (or pixel line) corresponding to each pixel 112 does not overlap the first driving circuit 120. Therefore, signal coupling can be prevented.
- the display module 100 has a clock line 122 for applying a clock signal to the first driving circuit 120 (or a gate in panel (GIP) control signal). Since the control signal line) is formed to overlap the first driving circuit 120, signal coupling between the clock line 122 and the data line 124 may not occur.
- the clock line 122 and the first driving circuit 120 may be formed at the same location on the substrate 110 and on different layers.
- the first pixel array 150 includes 9 pixels arranged in contact with each other in a 3x3 shape
- the second pixel array 150 It is shown assuming that 160 includes 9 pixels arranged in contact with each other in a 3x3 shape, but the present disclosure is not limited to this.
- the pixel array may include a plurality of pixels 112 closely arranged in various matrix forms, such as 2x2 or 4x4.
- FIG. 4 is a diagram illustrating the distance between pixel arrays according to an example of the present disclosure.
- a plurality of pixels on the substrate 110 are arranged in a matrix form at regular intervals from each other, but as shown in FIG. 1, the area of the designed area is smaller than the area of the allocated design area. Therefore, there is a risk that a design-empty area on the substrate 110 may cause a load effect due to a difference in pattern density during the photolithography process.
- a plurality of pixels 112 included in the pixel array are arranged closely to each other, but the position of the ⁇ LED PAD can be maintained the same as that of a conventional bezel-less display module. That is, each of the plurality of inorganic light-emitting devices 140 included in the first pixel array 150 is spaced apart from each other, and each of the plurality of inorganic light-emitting devices 140 included in the second pixel array 160 is spaced apart from each other. It can be.
- an extra area 170 that can be designed may exist on the substrate 110.
- each of the first pixel array 150 and the second pixel array 160 includes 9 pixels arranged in contact with each other 3x3, on the substrate 110, a conventional display module There may be more redundant areas 170 than are possible in .
- the extra area 170 may mean an area where the inorganic light emitting elements 140 are not disposed.
- the upper partial area and the lower partial area within the left area based on the first driving circuit 120 are extra areas 170 in which the inorganic light-emitting elements 140 are not disposed, and the first driving circuit 120 Based on , the upper partial area and the lower partial area within the right area may be an extra area 170 in which the inorganic light emitting elements 140 are not disposed.
- Each of the first pixel array 150 and the second pixel array 160 can be spaced apart from the first driving circuit 120 by a preset distance by using the extra area 170 on the substrate 110.
- the preset distance is used to prevent a decrease in luminance in a specific pixel 112 due to driving of the first driving circuit 120 and a signal coupling phenomenon between the clock line 122 and the data line 124. Can include arbitrary distances.
- FIG. 5 is a diagram for explaining the pixel structure of a display module according to an example of the present disclosure.
- each of the first pixel array 550 and the second pixel array 560 may include a plurality of pixels 112 arranged closely to each other in a 2x2 shape. there is.
- the first pixel array 550 includes four pixels arranged in contact with each other in a 2x2 shape
- the second pixel array 560 is formed in a 2x2 shape. It may contain four pixels arranged adjacent to each other.
- a dummy first driving circuit 175 may be provided in each of the left outer region within the left region and the right outer region within the right region on the substrate 110.
- the dummy first driving circuit 175 is not configured to generate and transmit control signals for driving the second driving circuit 130, but is the same (or similar) circuit as the first driving circuit 120. may include.
- each of the first driving circuit 120 and the dummy first driving circuits 175 may include a thin film transistor (TFT), and the second driving circuit 130 may also include a TFT.
- TFT thin film transistor
- the substrate 110 includes a circuit pattern in which the left and right sides are symmetrical with respect to the vertical first driving circuit 120, and thus the substrate 110 may be formed due to a difference in pattern density during the photolithography process. The risk of causing a load effect can be prevented.
- the dummy first driving circuits 175 are not in a floating state and can maintain the same potential as the first driving circuit 120.
- each node of the dummy first driving circuits 175 can maintain the same potential using constant voltage wiring such as VGH, VGL, driving voltage (VDD), and ground voltage (VSS), Accordingly, image noise caused by floating patterns can be prevented.
- FIG. 6 is a diagram illustrating the distance between pixel arrays according to an example of the present disclosure.
- an extra space 170 may exist in the substrate 110.
- the more grouped into 600um for the 3x3 shape and 400um for the 2x2 shape the wider the area where the first driving circuit 120, that is, the gate driver, can be designed.
- 400um, 600um, etc. are sufficient areas to design the first drive circuit 120 in a vertical form.
- the display module 100 includes various circuits for driving a plurality of inorganic light-emitting devices 140.
- the second driving circuit 130 provides driving current to the plurality of inorganic light emitting devices 140.
- the second driving circuit 130 generates a driving current whose size and driving time is controlled based on the data voltage, driving voltage, and various control signals applied from the first driving circuit 120 to the inorganic light-emitting elements 140. ) can be provided.
- the second driving circuit 130 drives the inorganic light-emitting devices 140 with PAM (Pulse Amplitued Modulation) and/or PWM (Pulse Width Modulation) to adjust the brightness of the light emitted by the inorganic light-emitting devices 140. You can control it.
- PAM Pulse Amplitued Modulation
- PWM Pulse Width Modulation
- the second driving circuit 130 is a PAM circuit for providing a driving current of a size corresponding to the PAM data voltage to the inorganic light emitting device 140, and/or converts the driving current provided from the PAM circuit to the PWM data voltage. It may include a PWM circuit for providing power to the inorganic light emitting device 140 for a time corresponding to .
- the first driving circuit 120 is a driving circuit for driving the second driving circuit 130. That is, the first driving circuit 120 may generate a control signal for the operation of the second driving circuit 130 and provide the control signal to the first driving circuit 120.
- the first driving circuit 120 receives a plurality of clock signals and a control signal (e.g., a reset signal, a start signal, etc.) for controlling the operation of the first driving circuit 120, and generates a second driving circuit.
- a control signal for controlling the operation of 130 may be generated, and the generated control signal may be provided to the second driving circuit 130.
- the first driving circuit 120 generates various control signals to drive the pixel array of the display module 100, in which pixels 112 arranged closely to each other in a matrix form, on a row line basis. It can be provided to the second driving circuit 120.
- the first driving circuit 120 may refer to at least a portion of a gate driver (or scan driver) for driving a plurality of pixels (or subpixels) on a row line basis, and may refer to a pixel
- the second driving circuits 130 of the subpixels constituting each pixel of the array may be sequentially driven for each row line.
- a second driving circuit 130 for driving each inorganic light-emitting device 140 may exist on the substrate 110 for each inorganic light-emitting device.
- Each of the inorganic light emitting devices 140 may be mounted or disposed on the substrate 110 to be electrically connected to the corresponding second driving circuit 130.
- the R inorganic light emitting device may be mounted or disposed on the substrate 110 such that the anode electrode and the cathode electrode are respectively connected to the anode electrode and the cathode electrode of the second driving circuit 120, which is the G inorganic light emitting device.
- the inorganic light emitting elements 140 are not limited to flip chip type micro LEDs, and may be horizontal type or vertical type micro LEDs depending on the embodiment.
- the display module 100 may further include various circuits for driving the second driving circuit 130 in addition to the first driving circuit 120.
- various circuits include a source driver circuit (or data driver circuit) for providing a data voltage (for example, a PAM data voltage or a PWM data voltage) to each pixel (or each subpixel) of the pixel array arranged in a matrix form. ) may include.
- a source driver circuit or data driver circuit for providing a data voltage (for example, a PAM data voltage or a PWM data voltage) to each pixel (or each subpixel) of the pixel array arranged in a matrix form. ) may include.
- various circuits may include a MUX circuit for selecting each of a plurality of subpixels constituting a pixel.
- the various circuits may include a driving voltage providing circuit for providing various driving voltages to each second driving circuit 120 included in the display module 100.
- the various circuits may include a clock signal providing circuit that provides various clock signals for driving the gate driver or data driver circuit, and may include a sweep voltage (e.g., two different voltages) required to drive the PWM circuit. It may include a sweep voltage providing circuit to provide a voltage that changes linearly with time.
- a sweep voltage e.g., two different voltages
- At least some of the various circuits described above are implemented in the form of separate chips and mounted on an external PCB (Printed Circuit Board) together with a TCON (Timing Controller), and are connected to a display module (Film On Glass) through FOG (Film On Glass) wiring. It may be connected to the second driving circuits 130 formed on the TFT layer of 100).
- At least some of the various circuits described above are implemented in the form of separate chips and placed on a film in the form of COF (Chip On Film), and are connected to the TFT layer of the display module 100 through FOG (Film On Glass) wiring. It may be connected to the second driving circuits 130 formed in .
- At least some of the various circuits described above are implemented in the form of separate chips and arranged in the form of COG (Chip On Glass) (i.e., the back side of the glass substrate of the display module 100 (the TFT layer is located on the back of the glass substrate) is disposed on the surface opposite to the surface on which it is formed, and may be connected to the second driving circuits 130 formed on the TFT layer of the display module 100 through a connection wire.
- COG Chip On Glass
- the sweep voltage providing circuit and the mux circuit are formed in the driving circuit layer
- the data driver circuit is disposed on the back of the glass substrate of the display module 100, the driving voltage providing circuit, and the clock signal.
- the provision circuit and TCON may be placed on an external PCB (Printed Circuit Board), but are not limited to this.
- a bezel-less display module may be provided.
- an optimized driving circuit can be designed and the inorganic light-emitting device can be stably driven.
- a display module with improved color reproducibility can be provided. Additionally, it can contribute to miniaturization and weight reduction of the display panel.
- the TFTs constituting the TFT layer are not limited to a specific structure or type, that is, the TFTs cited in one or more examples of the present disclosure are LTPS (Low It can be implemented as Temperature Poly Silicon TFT, oxide TFT, silicon (poly silicon or a-silicon) TFT, organic TFT, graphene TFT, etc., and can be implemented as P type (or N-type) in Si wafer CMOS process. You can also make and apply just the MOSFET.
- LTPS Low It can be implemented as Temperature Poly Silicon TFT, oxide TFT, silicon (poly silicon or a-silicon) TFT, organic TFT, graphene TFT, etc.
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Abstract
Description
Claims (10)
- 디스플레이 모듈에 있어서,기판;상기 기판 상의 중심 영역에 버티칼(Vertical) 형태로 마련되는 제1 구동 회로;상기 제1 구동 회로를 기준으로 상기 기판의 좌측 영역 상에 형성되며, 매트릭스 형태로 배치된 제1 복수의 픽셀을 포함하는 제1 픽셀 어레이; 및상기 제1 구동 회로를 기준으로 상기 기판의 우측 영역 상에 형성되며, 매트릭스 형태로 배치된 제2 복수의 픽셀을 포함하는 제2 픽셀 어레이;를 포함하며,제1 복수의 픽셀의 각 픽셀 및 제2 복수의 픽셀의 각 픽셀은, 복수의 무기 발광 소자를 포함하며,상기 제1 픽셀 어레이와 상기 제2 픽셀 어레이 각각은, 기 설정된 거리만큼 상기 제1 구동 회로로부터 분리된(separated), 디스플레이 모듈.
- 제1항에 있어서,상기 기판 상에 형성된 복수의 제2 구동 회로;를 더 포함하며,상기 복수의 제2 구동 회로는,상기 제1 복수의 픽셀 및 상기 제2 복수의 픽셀의 복수의 무기 발광 소자를 구동하며,상기 제1 구동 회로는,적어도 하나의 클럭 라인을 통해 인가되는 클럭 신호들에 기초하여 제어 신호들을 생성하며,상기 생성된 제어 신호들을 상기 복수의 제2 구동 회로로 제공하여 상기 복수의 제2 구동 회로를 구동하는, 디스플레이 모듈.
- 제2항에 있어서,상기 적어도 하나의 클럭 라인은, 상기 기판 상에서 상기 제1 구동 회로와 중첩되는(overlap), 디스플레이 모듈.
- 제1항에 있어서,상기 제1 구동 회로의 상기 버티칼 형태는,상기 기판을 상기 좌측 영역과 상기 우측 영역으로 구분하며,상기 제1 복수의 픽셀은, 서로 밀접하게 접촉하며,상기 제2 복수의 픽셀은, 서로 밀접하게 접촉하는, 디스플레이 모듈.
- 제4항에 있어서,상기 제1 복수의 픽셀은, 서로 직접 접촉하며,상기 제2 복수의 픽셀은, 서로 직접 접촉하는, 디스플레이 모듈.
- 제4항에 있어서,상기 제1 픽셀 어레이의 상기 복수의 무기 발광 소자는, 서로 이격 배치되며,상기 제2 픽셀 어레이의 상기 복수의 무기 발광 소자는, 서로 이격 배치되는, 디스플레이 모듈.
- 제1항에 있어서,상기 좌측 영역 내의 상측 일부 영역 및 하측 일부 영역은 무기 발광 소자가 배치되지 않는 제1 여분 영역이며,상기 우측 영역 내의 상측 일부 영역 및 하측 일부 영역은 무기 발광 소자가 배치되지 않는 제2 여분 영역인, 디스플레이 모듈.
- 제1항에 있어서,상기 좌측 영역의 외곽 일부 영역에 배치된 제1 더미(Dummy) 제1 구동 회로; 및상기 우측 영역의 외곽 일부 영역에 배치된 제2 더미 제1 구동 회로;를 더 포함하며,상기 제1 더미 제1 구동 회로 및 제2 더미 제1 구동 회로 각각은,상기 제1 구동 회로와 동일한 전위(potential)를 유지하는, 디스플레이 모듈.
- 제1항에 있어서,상기 기판의 상기 좌측 영역 및 상기 기판의 상기 우측 영역은,상기 제1 구동 회로의 상기 버티칼 형태에서 대칭되는, 디스플레이 모듈.
- 제8항에 있어서,상기 제1 구동 회로, 상기 제1 더미 제1 구동 회로 및 상기 제2 더미 제1 구동 회로 각각은,TFT(Thin Film Transistor)를 포함하는, 디스플레이 모듈.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380069017.XA CN119866519A (zh) | 2022-12-22 | 2023-12-19 | 显示模块 |
| EP23907691.2A EP4550302A4 (en) | 2022-12-22 | 2023-12-19 | DISPLAY MODULE |
| US18/436,692 US12475836B2 (en) | 2022-12-22 | 2024-02-08 | Display module |
| US19/390,247 US20260073852A1 (en) | 2022-12-22 | 2025-11-14 | Display module |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0181715 | 2022-12-22 | ||
| KR1020220181715A KR20240099847A (ko) | 2022-12-22 | 2022-12-22 | 디스플레이 모듈 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/436,692 Continuation US12475836B2 (en) | 2022-12-22 | 2024-02-08 | Display module |
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| Publication Number | Publication Date |
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| WO2024136408A1 true WO2024136408A1 (ko) | 2024-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/021002 Ceased WO2024136408A1 (ko) | 2022-12-22 | 2023-12-19 | 디스플레이 모듈 |
Country Status (2)
| Country | Link |
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| KR (1) | KR20240099847A (ko) |
| WO (1) | WO2024136408A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120062743A (ko) * | 2009-08-20 | 2012-06-14 | 글로벌 오엘이디 테크놀러지 엘엘씨 | 디스플레이 디바이스의 칩렛을 광학적으로 테스팅하는 방법 |
| KR101608165B1 (ko) * | 2012-05-16 | 2016-03-31 | 샤프 가부시키가이샤 | 액정 디스플레이 |
| KR20200036290A (ko) * | 2018-09-28 | 2020-04-07 | 엘지디스플레이 주식회사 | 모니터링용 패드 및 이를 이용한 표시패널 |
| KR20210087873A (ko) * | 2020-01-03 | 2021-07-13 | 삼성전자주식회사 | 디스플레이 모듈 |
| KR20220061495A (ko) * | 2020-11-06 | 2022-05-13 | 삼성전자주식회사 | 디스플레이 모듈, 디스플레이 장치 및 그 제조방법 |
-
2022
- 2022-12-22 KR KR1020220181715A patent/KR20240099847A/ko active Pending
-
2023
- 2023-12-19 WO PCT/KR2023/021002 patent/WO2024136408A1/ko not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120062743A (ko) * | 2009-08-20 | 2012-06-14 | 글로벌 오엘이디 테크놀러지 엘엘씨 | 디스플레이 디바이스의 칩렛을 광학적으로 테스팅하는 방법 |
| KR101608165B1 (ko) * | 2012-05-16 | 2016-03-31 | 샤프 가부시키가이샤 | 액정 디스플레이 |
| KR20200036290A (ko) * | 2018-09-28 | 2020-04-07 | 엘지디스플레이 주식회사 | 모니터링용 패드 및 이를 이용한 표시패널 |
| KR20210087873A (ko) * | 2020-01-03 | 2021-07-13 | 삼성전자주식회사 | 디스플레이 모듈 |
| KR20220061495A (ko) * | 2020-11-06 | 2022-05-13 | 삼성전자주식회사 | 디스플레이 모듈, 디스플레이 장치 및 그 제조방법 |
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| Publication number | Publication date |
|---|---|
| KR20240099847A (ko) | 2024-07-01 |
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