WO2022190235A1 - 自発光装置 - Google Patents

自発光装置 Download PDF

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Publication number
WO2022190235A1
WO2022190235A1 PCT/JP2021/009460 JP2021009460W WO2022190235A1 WO 2022190235 A1 WO2022190235 A1 WO 2022190235A1 JP 2021009460 W JP2021009460 W JP 2021009460W WO 2022190235 A1 WO2022190235 A1 WO 2022190235A1
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WO
WIPO (PCT)
Prior art keywords
self
unit
luminous
light
outer edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/009460
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English (en)
French (fr)
Japanese (ja)
Inventor
学 岩川
和式 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
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Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2021/009460 priority Critical patent/WO2022190235A1/ja
Priority to US18/279,878 priority patent/US12622146B2/en
Priority to JP2023504943A priority patent/JP7412631B2/ja
Publication of WO2022190235A1 publication Critical patent/WO2022190235A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/40—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character is selected from a number of characters arranged one beside the other, e.g. on a common carrier plate
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations
    • 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
    • H10K59/10—OLED displays

Definitions

  • the present disclosure relates to a tiling-type self-luminous device in which a plurality of self-luminous units are arranged side by side.
  • an organic light-emitting electroluminescence display is a self-luminous device in which each pixel is composed of an OEL
  • a micro LED display is a self-luminous device in which each pixel is composed of fine LEDs (also called " ⁇ LEDs").
  • Self-luminous devices using ⁇ LEDs are also being considered for use as backlights for liquid crystal displays (LCDs). Since the backlight using ⁇ LED can locally control the brightness, by controlling the brightness of each area on the backlight according to the image displayed on the LCD, Display quality can be improved. Such a backlight is called a local dimming backlight.
  • a tiling-type self-luminous device in which a large self-luminous device is formed by arranging a plurality of self-luminous units, which are small self-luminous devices.
  • a tiling-type self-luminous device it is important to make boundaries between self-luminous units inconspicuous.
  • Patent Document 1 discloses that by bending the area (non-display area) outside the display area of each light-emitting unit to the back side, the self-luminous unit Techniques for narrowing the width of the boundary line (joint) between the two have been disclosed.
  • Patent Document 2 below discloses a technique for narrowing the width of the boundary line between self-luminous units by overlapping the non-display areas of adjacent self-luminous units.
  • JP 2014-075547 A Japanese Patent Application Laid-Open No. 2012-238001
  • the present disclosure has been made in order to solve such problems, and is a self-luminous unit capable of obscuring a boundary line between self-luminous units even if there is a deviation in pixel pitch between adjacent self-luminous units.
  • the purpose is to provide an apparatus.
  • a self-luminous device is a tiling-type self-luminous device in which a plurality of self-luminous units are arranged side by side. At least one light-emitting cell composed of one or more self-luminous elements is provided in each of the unit regions, and the central portion and the outer edge portion of the self-luminous unit are provided in the unit region. The number or position of light emitting cells is different.
  • the self-luminous device it is possible to make the boundary line between the self-luminous units inconspicuous even if the pixel pitch is shifted between adjacent self-luminous units.
  • FIG. 1 is a schematic plan view showing the configuration of a self-luminous device according to Embodiment 1.
  • FIG. 2 is a schematic plan view showing the configuration of the self-luminous unit according to Embodiment 1.
  • FIG. 4 is a schematic plan view showing a boundary portion between self-luminous units in the self-luminous device according to Embodiment 1.
  • FIG. 4 is a schematic plan view showing a modification of the configuration of the self-luminous unit according to Embodiment 1; 4 is a flow chart showing manufacturing steps of the self-luminous device according to Embodiment 1.
  • FIG. FIG. 11 is a schematic plan view showing a boundary portion between self-luminous units in the self-luminous device according to Embodiment 2;
  • FIG. 11 is a schematic plan view showing a boundary portion between self-luminous units in a self-luminous device according to Embodiment 3;
  • FIG. 11 is a schematic plan view showing a boundary portion between self-luminous units in a self-luminous device according to Embodiment 4;
  • FIG. 11 is a schematic plan view showing a boundary portion between self-luminous units in a self-luminous device according to Embodiment 5;
  • FIG. 1 is a schematic plan view showing the configuration of a self-luminous device 100 according to Embodiment 1.
  • the self-luminous device 100 is a tiling-type self-luminous device in which a plurality of self-luminous units 1 are arranged side by side.
  • FIG. 2 is a schematic plan view showing the configuration of the self-luminous unit 1.
  • FIG. 3 is a schematic plan view showing a boundary portion between the self-luminous units 1 in the self-luminous device 100.
  • the self-luminous unit 1 has a plurality of light-emitting cells 11 arranged on the backplane 2 .
  • a drive IC Integrated Circuit
  • the light-emitting cell 11 becomes a pixel which is the minimum unit of color information of an image.
  • the self-luminous unit 1 is divided into a plurality of unit areas 10 arranged in a matrix. That is, the unit regions 10 are arranged in the horizontal direction (horizontal direction of the paper surface of FIG. 1) and vertical direction (vertical direction of the paper surface of FIG. 1). At least one light-emitting cell 11 is provided in each of the plurality of unit regions 10 , and each light-emitting cell 11 is composed of one or more self-light-emitting elements 5 .
  • metal thin film wiring, electrodes, switching elements, and the like for driving the self-luminous elements 5 of the light-emitting cells 11 are also arranged in the active area where the light-emitting cells 11 are arranged.
  • TFT thin film transistor
  • one light-emitting cell 11 is composed of three self-light-emitting elements 5, a red LED element 5R, a green LED element 5G and a blue LED element 5B.
  • the red LED element 5R, the green LED element 5G and the blue LED element 5B are arranged in this order from left to right.
  • the light-emitting cell 11 may be composed of four LED elements, which are the red LED element 5R, the green LED element 5G, the blue LED element 5B, and a white LED element.
  • the light-emitting cell 11 may be composed of a self-light-emitting element other than the LED element, such as an OEL element.
  • the number of light-emitting cells 11 provided in one unit area 10 differs between the central portion and the outer edge portion of the self-luminous unit 1 . More specifically, the number of light-emitting cells 11 provided in the unit region 10 located at the outer edge of the self-luminous unit 1 is the same as the number of light-emitting cells 11 provided in the unit region 10 located in the central portion of the self-luminous unit 1. more than the number of Further, in the example of FIG.
  • the number of light-emitting cells 11 provided in the unit region 10 positioned at the corner of the outer edge of the self-luminous unit 1 is The number of light-emitting cells 11 is greater than the number of light-emitting cells 11 provided in the unit area 10 located in the straight portion of the outer edge of the self-light-emitting unit 1 .
  • one light-emitting cell 11 is provided in the unit area 10 located in the central part of the self-luminous unit 1, and the unit area 10 located in the straight part of the outer edge of the self-luminous unit 1 has Two light-emitting cells 11 are provided, and four light-emitting cells 11 are provided in the unit area 10 positioned at the corner portion of the outer edge of the self-light-emitting unit 1 .
  • the metal thin film wiring, electrodes, switching elements, etc. for driving the self light emitting elements 5 of the light emitting cells 11 are determined according to the number of self light emitting elements 5 provided in the self light emitting unit 1. Only the number is provided.
  • the two light-emitting cells 11 provided in the unit area 10 located in the straight line part of the outer edge of the self-light-emitting unit 1 are located on the outer edge of the self-light-emitting unit 1 (that is, adjacent self-light-emitting cells). are aligned vertically with respect to the boundary line with unit 1).
  • the four light emitting cells 11 provided in the unit area 10 positioned at the corner portion of the outer edge of the self light emitting unit 1 are arranged two by two in the vertical direction with respect to each of the two outer edges forming the corner portion. They are arranged in a matrix of x2.
  • At least one of the plurality of light-emitting cells 11 provided in the unit region 10 located at the outer edge of the self-light-emitting unit 1 is the light-emitting cell 11 of the unit region 10 located at the center of the self-light-emitting unit 1.
  • the light-emitting cells 11 other than the basic cells are used as correction cells for correcting the brightness of the boundary portions between the self-light-emitting units 1 .
  • the direction in which the plurality of light-emitting cells 11 are arranged is parallel to the outer edge of the self-luminous unit 1 (the boundary line between adjacent self-luminous units 1). It does not have to be in the direction perpendicular to the outer edge of the self-luminous unit 1 .
  • the angle formed by the direction in which the plurality of light-emitting cells 11 are arranged and the outer edge of the self-light-emitting unit 1 may be other than 0° and 180°.
  • two or more light-emitting cells 11 having different distances from the outer edge of the self-luminous unit 1 may be provided.
  • the distance from the outer end of the self-luminous unit 1 to the light-emitting cell 11 used as the basic cell and the distance from the outer end of the self-luminous unit 1 to the light-emitting cell 11 used as the correction cell are They should be different from each other.
  • the unit region 10 at the outer edge of the self-luminous unit 1 that is, the unit region 10 having a different number of light-emitting cells 11 from the unit region 10 located in the central portion of the self-luminous unit 1, Only the unit area 10 positioned at the outermost edge of the self-luminous unit 1 is provided.
  • the "outer edge" may have a constant width.
  • FIG. 4 shows an example in which three rows of unit regions 10 from the outermost edge are used as the unit regions 10 of the outer edge.
  • a laminated film is formed by laminating a buffer layer, an n-type semiconductor layer, a light-emitting layer, and a p-type semiconductor layer in this order on a substrate (step S101).
  • a sapphire substrate for example, is used as the substrate.
  • step S101 phosphors or quantum dots are formed as a color conversion layer on the laminated film formed in step S101 (step S102). Furthermore, electrodes are formed on the n-type semiconductor layer and the p-type semiconductor layer of the laminated film (step S103). Then, by dicing the substrate into a desired size, LED elements (red LED element 5R, green LED element 5G, and blue LED element 5B) as self-luminous elements 5 are formed (step S104).
  • LED elements red LED element 5R, green LED element 5G, and blue LED element 5B
  • the red LED element 5R, the green LED element 5G, and the blue LED element 5B shown in FIG. 2 are each rectangular, the shape of the self-luminous element 5 is not limited thereto, and may be square, for example. Further, although the red LED element 5R, the green LED element 5G, and the blue LED element 5B shown in FIG. 2 are arranged without gaps, gaps may exist between them due to dicing in step S104.
  • a step of preparing the backplane 2 specifically, a switching element, a metal thin film wiring, an electrode, etc. are formed on the backplane 2.
  • a process is performed.
  • the backplane 2 for example, a glass substrate, a glass epoxy substrate, or the like is used.
  • the self-luminous element 5 is arranged in each unit area 10 on the backplane 2 by pick-and-place (step S106).
  • the method of arranging the self-luminous elements 5 is not limited to pick-and-place, and other methods such as laser lift-off, elastic stamping, static electricity or magnetism may be used.
  • the backplane 2 on which the self-luminous elements 5 are mounted is diced into a desired size (step S107). Electrodes of the respective light emitting elements 5 are electrically connected to switching elements, and the switching elements are further connected to a driving IC via metal thin film wiring.
  • the self-luminous element 5 is mounted on the backplane 2, and the light-emitting cell 11 is formed in each unit area 10 (step S108).
  • the structure of the self-luminous unit 1 is completed by the steps up to this point.
  • a self-luminous device 100 comprising a plurality of self-luminous units 1 is formed (step S109).
  • the self-luminous device 100 is caused to emit light, and the display quality at the boundary between the self-luminous units 1 is inspected (step S110). Then, based on the inspection result, by controlling the driving signal or the video signal output from the driving IC so that the boundary between the self-luminous units 1 becomes inconspicuous, the outer edge of each light-emitting unit 1 is controlled.
  • the control conditions (such as the luminance ratio between the basic cell and the correction cell) of the light emitting cells 11 provided in the unit area 10 are adjusted (step S111). Information on the adjusted control conditions is stored in a storage medium such as a memory. As described above, the self-luminous device 100 is completed.
  • a driving signal or a video signal controlled based on the adjusted control condition is supplied from the driving IC to the light emitting cells 11 provided in the unit area 10 at the outer edge of each light emitting unit 1, and as a result, the light emitting cells 11 emit light by themselves.
  • the boundary between the units 1 becomes inconspicuous and the display quality is improved.
  • the display quality inspection (step S110) and the adjustment of the control conditions of the light-emitting cells 11 (step S111) may also be performed on the central unit area 10 of the self-light-emitting unit 1. That is, the luminance of all the unit areas 10 may be inspected by the display quality inspection, and the control conditions of the light-emitting cells 11 of each unit area 10 may be adjusted so that the luminance difference between adjacent unit areas 10 becomes small. . In this case, the uniformity of in-plane luminance can be improved not only at the boundaries between adjacent self-luminous units 1 but also over the self-luminous device 100 as a whole.
  • a switching element connected to the self-luminous element 5 of the light-emitting cell 11 is connected to a driving IC, and the driving IC is electrically connected to an external control board via a flexible substrate or the like.
  • the drive IC outputs a drive signal or a video signal based on a signal input from the control board through a flexible substrate or the like, and the signal output from the drive IC is supplied to the switching element through metal thin film wiring.
  • the switching element operates the self-luminous element 5 according to the supplied signal. As a result, the light emitted from each light-emitting cell 11 on the self-light-emitting unit 1 is controlled according to the drive signal or video signal, and an image is displayed in the active area.
  • the control method of the self-luminous element 5 is not limited to the above method.
  • one switching element may operate three of the red LED element 5R, the green LED element 5G, and the blue LED element 5B.
  • a pixel driving IC may operate the self-luminous element 5 of each light-emitting cell 11 .
  • a pixel driving IC operates the self-luminous element 5 of each light emitting cell 11
  • one pixel driving IC generally operates each light emitting cell 11 .
  • the number of the light-emitting cells 11 provided in the unit area 10 differs between the center portion and the outer edge portion of each light-emitting unit 1.
  • the lighting method (control condition) of the unit area 10 in the outer edge of the unit 1 can be adjusted independently of the central part. Therefore, even if the pixel pitch (the pitch of the light emitting cells 11) is shifted between adjacent self light emitting units 1, by adjusting the lighting method of the unit area 10 at the outer edge of the self light emitting unit 1, the self light emitting unit 1 You can make the border between them inconspicuous.
  • FIG. 6 is a schematic plan view showing the configuration of the self-luminous unit 1 according to Embodiment 2, and shows the configuration of the boundary between the self-luminous units 1 in the self-luminous device 100.
  • the plurality of light-emitting cells 11 provided in the unit region 10 positioned at the outer edge of the self-light-emitting unit 1 are spaced apart from each other.
  • the plurality of light emitting cells 11 provided in the unit region 10 positioned at the outer edge of the self light emitting unit 1 are formed as an integrated body.
  • an integrated body having two light emitting cells 11 is provided in a unit region 10 positioned at a straight portion of the outer edge of the self-luminous unit 1, and a unit area 10 positioned at a corner portion of the outer edge of the self-luminous unit 1 is provided.
  • a region 10 is provided with an assembly comprising four light emitting cells 11 .
  • a plurality of light emitting cells 11 can be mounted on the backplane 2 as one integrated body. It is possible to simplify the mounting process and reduce the manufacturing cost.
  • the two light-emitting cells 11 provided in the unit area 10 located in the straight line portion of the outer edge of the self-luminous unit 1 are located on the outer edge (adjacent were arranged in a vertical direction with respect to the boundary line with the self-luminous unit 1).
  • the boundary line can be effectively made inconspicuous.
  • the configuration of the self-luminous units 1 is effective even when the direction of pixel pitch deviation between the adjacent self-luminous units 1 is along the boundary line between the self-luminous units 1. show.
  • FIG. 7 is a schematic plan view showing the configuration of the self-luminous unit 1 according to Embodiment 3, and shows the configuration of the boundary between the self-luminous units 1 in the self-luminous device 100.
  • FIG. 7 In the self-luminous unit 1 shown in FIG. 7, one light-emitting cell 11 is provided in the unit region 10 located in the central portion of the self-luminous unit 1, and the unit region 10 located in the straight line portion of the outer edge of the self-luminous unit 1. is provided with three light-emitting cells 11, and four light-emitting cells 11 are provided in a unit region 10 positioned at a corner portion of the outer edge of the self-light-emitting unit 1.
  • FIG. 7 is a schematic plan view showing the configuration of the self-luminous unit 1 according to Embodiment 3, and shows the configuration of the boundary between the self-luminous units 1 in the self-luminous device 100.
  • FIG. 7 In the self-luminous unit 1 shown in FIG. 7, one light-emitting cell 11 is provided in the unit region 10 located in the central portion of the self
  • the three light-emitting cells 11 provided in the unit area 10 located on the straight line portion of the outer edge of the self-luminous unit 1 are displaced from each other in the direction along the outer edge of the self-luminous unit 1 (the direction parallel to the outer edge). It is different from the first embodiment in that it is arranged at the same position.
  • two or more light-emitting cells 11 are arranged in the unit area 10 located at the outer edge of the self-light-emitting unit 1, and are arranged in a direction along the outer edge of the self-light-emitting unit 1 so as to be offset from each other. be provided. Therefore, according to the present embodiment, even if the direction of pixel pitch deviation between the adjacent self-luminous units 1 is along the boundary line between the self-luminous units 1, the outer edge of the self-luminous unit 1 By adjusting the lighting method of the light-emitting cells 11 provided in the unit regions 10 located in the part, the boundary line can be effectively made inconspicuous.
  • Embodiment 4 shows an example in which Embodiments 2 and 3 are combined.
  • FIG. 8 is a schematic plan view showing the configuration of the self-luminous unit 1 according to Embodiment 4, and shows the configuration of the boundary between the self-luminous units 1 in the self-luminous device 100.
  • two or more light-emitting cells 11 are provided in a unit area 10 located at the outer edge of the self-luminous unit 1, and are arranged in a direction along the outer edge of the self-luminous unit 1, and These light emitting cells 11 are formed as an integrated body.
  • an integrated body having four light emitting cells 11 is provided in a unit area 10 positioned in a straight line portion on the outer edge of the self-luminous unit 1, and a unit area 10 positioned in a corner portion on the outer edge of the self-luminous unit 1 is provided.
  • a region 10 is provided with an assembly comprising nine light emitting cells 11 .
  • three of the four light-emitting cells 11 provided in the unit area 10 located in the straight portion of the outer edge of the self-light-emitting unit 1 are shifted in the direction along the outer edge of the self-light-emitting unit 1. are placed.
  • FIG. 9 is a schematic plan view showing the configuration of the self-luminous unit 1 according to Embodiment 5, and shows the configuration of the boundary between the self-luminous units 1 in the self-luminous device 100.
  • one light-emitting cell 11 is provided in each of the unit region 10 located in the central portion of the self-luminous unit 1 and the unit region 10 located in the outer edge portion of the self-luminous unit 1. is provided.
  • the positions of the light-emitting cells 11 provided in the unit regions 10 are different between the unit regions 10 located in the central portion of the self-luminous unit 1 and the unit regions 10 located in the outer edge portion.
  • the positions of the light-emitting cells 11 in each unit region 10 are constant, but the plurality of unit regions 10 located in the outer edge of the self-luminous unit 1
  • the positions of the light emitting cells 11 in each unit area 10 are not constant.
  • the light-emitting cell 11 is positioned at the center of the unit region 10 in any unit region 10 .
  • the positions of the light emitting cells 11 in the unit area 10 are determined.
  • light-emitting cells 11 are arranged in a zigzag pattern in a plurality of unit regions 10 arranged in a direction along the outer edge of the self-luminous unit 1, and light is emitted from the outer end of the self-luminous unit 1.
  • the self-luminous device 100 there are two or more types of intervals between the light-emitting cells 11 between the unit regions 10 adjacent to each other across the boundary between the self-luminous units 1 .
  • the two or more types of intervals include those smaller than the interval (pitch) of the light emitting cells 11 between the unit regions 10 adjacent to each other in the central portion of the self light emitting unit 1 . That is, when a plurality of self-luminous units 1 are arranged side by side, the light-emitting cells 11 having a narrower interval than the pitch of the light-emitting cells 11 in the central portion of the self-luminous units 1 across the boundary line between the adjacent self-luminous units 1 pairs are formed.
  • the boundary line can be made inconspicuous by adjusting the control conditions for that pair.
  • the number of light emitting cells 11 provided in the unit region 10 positioned at the outer edge of the self light emitting unit 1 is the same as the number of light emitting cells 11 provided in the unit region 10 positioned at the center of the self light emitting unit 1. Since it is not necessary to increase the number of cells 11, the required number of light-emitting cells 11 can be reduced compared with the first to fourth embodiments, and an increase in manufacturing cost can be suppressed.
  • FIG. 9 shows a configuration in which the light emitting cells 11 are arranged in a staggered manner in a plurality of unit regions 10 arranged along the outer edge of the self light emitting unit 1, that is, the light emitting cells relatively close to the outer end of the self light emitting unit 1.
  • 11 are arranged alternately, but their arrangement is not limited to this example.
  • the light-emitting cells 11 relatively close to the outer edge of the self-luminous unit 1 may be arranged every two or three.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Led Device Packages (AREA)
PCT/JP2021/009460 2021-03-10 2021-03-10 自発光装置 Ceased WO2022190235A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2021/009460 WO2022190235A1 (ja) 2021-03-10 2021-03-10 自発光装置
US18/279,878 US12622146B2 (en) 2021-03-10 Self-light emitting device
JP2023504943A JP7412631B2 (ja) 2021-03-10 2021-03-10 自発光装置

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PCT/JP2021/009460 WO2022190235A1 (ja) 2021-03-10 2021-03-10 自発光装置

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KR20250007955A (ko) * 2023-07-06 2025-01-14 엘지전자 주식회사 디스플레이 장치
US12499847B2 (en) 2023-07-06 2025-12-16 Lg Electronics Inc. Display device

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JP2011075825A (ja) * 2009-09-30 2011-04-14 Mitsubishi Electric Corp 画像表示装置

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JP2002208307A (ja) * 2000-07-31 2002-07-26 Matsushita Electric Ind Co Ltd 照明装置、画像表示装置、液晶モニタ、液晶テレビ、液晶情報端末、及び導光板の製造方法
JP2004046164A (ja) * 2002-06-19 2004-02-12 Eastman Kodak Co タイル式電気光学画像形成デバイスおよびその製造方法
JP2005003990A (ja) * 2003-06-12 2005-01-06 Seiko Epson Corp 画像表示装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20250007955A (ko) * 2023-07-06 2025-01-14 엘지전자 주식회사 디스플레이 장치
KR102810563B1 (ko) * 2023-07-06 2025-05-23 엘지전자 주식회사 디스플레이 장치
US12499847B2 (en) 2023-07-06 2025-12-16 Lg Electronics Inc. Display device

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