WO2003034375A1 - Procede de reparation d'un dispositif d'affichage d'image, film de reparation et dispositif de reparation d'image - Google Patents

Procede de reparation d'un dispositif d'affichage d'image, film de reparation et dispositif de reparation d'image Download PDF

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Publication number
WO2003034375A1
WO2003034375A1 PCT/JP2001/009100 JP0109100W WO03034375A1 WO 2003034375 A1 WO2003034375 A1 WO 2003034375A1 JP 0109100 W JP0109100 W JP 0109100W WO 03034375 A1 WO03034375 A1 WO 03034375A1
Authority
WO
WIPO (PCT)
Prior art keywords
image display
display device
film
repair
repair film
Prior art date
Application number
PCT/JP2001/009100
Other languages
English (en)
Japanese (ja)
Inventor
Shiroyuki Iwabuchi
Original Assignee
Iizuka Electric Industry Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iizuka Electric Industry Co., Ltd. filed Critical Iizuka Electric Industry Co., Ltd.
Priority to PCT/JP2001/009100 priority Critical patent/WO2003034375A1/fr
Priority to TW090126164A priority patent/TW567350B/zh
Publication of WO2003034375A1 publication Critical patent/WO2003034375A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136259—Repairing; Defects
    • G02F1/136268—Switch defects

Definitions

  • the present invention relates to a method for repairing an image display device, a film for repair, and an image display device suitable for use in compensating for a defect called so-called dot missing that occurs in an image display device.
  • screen display is performed by emitting light from a large number of pixel portions (cell sets).
  • some pixels among a large number of pixels are defective, and so-called dot missing is generated. In some cases, it was difficult to make all pixels emit light normally.
  • Pixels with missing dots will always emit white light, and when the displayed image becomes dark, only the missing pixels will emit white light without becoming too bright. Therefore, even if there are only a few missing dots, the occurrence of missing dots is clearly recognized by the user, giving the user an unpleasant feeling. T JP01 / 09100 In addition, the reliability of image display was impaired.
  • the present invention has been made in order to solve the above-described problems, and is not limited to a process for manufacturing an image display device such as a liquid crystal display device, and also includes a case where a dot missing is found after the image display device is completed.
  • the purpose is to make it possible to compensate for missing dots.
  • a method for repairing an image display device is directed to a method for repairing an image display device in which a plurality of display units are arranged and having a defect in a part of the display unit.
  • a method of repairing an image display device for repairing the image display device comprising: attaching a repair film to all or a part of the image display surface of the image display device; and attaching the repair film to the image display device.
  • a prism portion having a cross section in which triangular peaks and valleys are alternately arranged is formed on all or a part of the surface of the repair film.
  • the procedure is characterized by the following steps.
  • Another feature of the method for repairing an image display device of the present invention is that the triangle is an isosceles triangle.
  • Another feature of the repair method of the image display device of the present invention resides in that the peaks and the valleys are arranged at a constant pitch.
  • Another feature of the repair method of the image display device of the present invention is that a bit having a cross section in which triangular peaks and valleys are alternately arranged on the surface of the repair film. The point is to form the above-mentioned prism part by contact.
  • Another feature of the repair method of the image display device of the present invention is that the bit is heated to the melting point temperature of the surface of the repair film.
  • the prism portion is formed by performing laser processing on a surface of the repair film.
  • Another feature of the repair method of the image display device of the present invention is that the prism portion is formed by cutting the surface of the repair film.
  • Another feature of the repair method of the image display device is that, in a state where the repair film is stuck to the image display surface of the image display device, the prism portion is configured to generate the defect. It is characterized in that it is positioned in the vertical direction with respect to the display unit that is operating, but is not positioned in the vertical direction with respect to other normal display units.
  • repair film has a two-layer structure having a polyester layer and an acrylic resin layer, The point is that it is formed on the acrylic resin layer.
  • Another feature of the method for repairing an image display device of the present invention is that the repair film is attached to a polarizing film serving as the image display surface. Another feature of the method is that an area of the image display surface of the image display device where the repair film is not stuck. Is that a transparent film is attached.
  • Another feature of the method for repairing an image display device of the present invention is that a hole is formed in the transparent film at a position corresponding to the repair film.
  • the repair film of the present invention is used for repairing a defect in a part of a display unit of an image display device having a plurality of display units arranged in order to repair the defect.
  • the triangular shape is an isosceles triangular shape.
  • Another feature of the repair film of the present invention is that the peaks and the valleys are arranged in a fixed pitch.
  • Another feature of the repair film of the present invention is that, in a state where the repair film is attached to the image display surface of the image display device, the prism portion is located on the display portion having the defect. It is located vertically, but not vertically to other normal display units.
  • repair film of the present invention has a two-layer structure having a polyester layer and an acrylic resin layer, and the prism portion is formed on the acrylic resin layer. It is in the point.
  • an image display device of the present invention is an image display device configured by arranging a plurality of display units, and includes a repair film attached to all or a part of the image display surface, It is characterized in that a prism portion having a cross section in which triangular peaks and valleys are alternately arranged is formed on all or a part of the surface of the repair film.
  • Another feature of the image display device of the present invention resides in that the triangle is an isosceles triangle. Another feature of the image display device of the present invention is that the peaks and the valleys are arranged at a constant pitch.
  • Another feature of the image display device of the present invention is that, in a state where the repair film is attached to the image display surface, the prism portion is positioned vertically with respect to a specific display portion. However, the point is that it is not positioned in the vertical direction with respect to a display unit other than the specific display unit.
  • the repair film has a two-layer structure including a polyester layer and an acryl resin layer, and the prism portion includes the acrylic resin. The point is that it is formed on the resin layer.
  • repair film is attached to a polarizing film forming the image display surface.
  • a transparent film is attached to a region of the image display surface where the repair film is not attached.
  • Another feature of the image display device of the present invention is that a hole is formed in the transparent film at a position corresponding to the repairing film.
  • a part of light emitted obliquely from a normal display unit in a state where the repair film on which the prism unit is formed is attached to the image display surface of the image display device. Is refracted at the prism and synthesized, and emitted in the vertical direction of the repair film. Therefore, the missing dots can be compensated for, and it can be displayed on the screen display as if the light emission was normally performed on the display unit where the missing dots occurred.
  • FIG. 1 is a schematic diagram showing a cross-sectional configuration of a liquid crystal display device 101 having a power display function, which is an image display device of the present embodiment.
  • FIG. 2 is a diagram showing a configuration of a color filter (CF) substrate 103.
  • FIG. 3 is a diagram showing a configuration of the TFT substrate 104.
  • FIG. 4 is a schematic diagram showing a cross-sectional configuration of the repair film 1.
  • FIG. 5 is a schematic diagram for explaining the relationship between the repair film 1 on which the prism portion 2 is formed and the CF substrate 1.
  • FIG. 6 is a diagram for explaining the thickness of the repair film 1.
  • FIG. 7 is a schematic diagram showing one step of the repair method.
  • FIG. 8 is a schematic diagram showing one step of the repair method.
  • FIG. 9 is a schematic diagram showing one step of a repair method of another example.
  • FIG. 1 is a schematic diagram illustrating a cross-sectional configuration of a liquid crystal display device 101 that is an image display device according to the present embodiment.
  • FIG. 2 is a diagram showing a configuration of a color filter (CF) substrate 103
  • FIG. 3 is a diagram showing a configuration of a TFT substrate 104. As shown in FIG.
  • a liquid crystal layer 102 is formed between glass substrates 105 and 106, and a CF substrate 103 and a glass substrate 106 are formed on the inner side of the glass substrate 105.
  • TFT substrates 104 are respectively arranged on the inner surface side.
  • the orientation of molecules changes according to the potential of each pixel electrode 104 a of the TFT substrate 104, whereby light passing through the liquid crystal layer 102 from the incident side to the emission side is changed. (In the direction indicated by the arrow) changes.
  • the polarizing films 107 and 108 are attached to the outer surfaces of the glass substrates 105 and 106, respectively.
  • one pixel unit 110 has a red (R) display unit, a green (G) display unit, and a blue (B) display unit.
  • R red
  • G green
  • B blue
  • a red filter 103R, a green filter 103G, and a blue filter 103B are formed.
  • a light shielding film called black matrix is placed between each display.
  • each display portion of the CF substrate 103 that is, the red filter 103R, the green filter 103G, and the blue filter 103
  • the pixel electrode 104a is arranged corresponding to the position of B.
  • a source line 104b is connected to each pixel electrode 104a, and the input from the source line 104b to the pixel electrode 104a is turned on / off by the gate line 104c. Is controlled by
  • a repair film 1 for compensating for missing dots is attached to the polarizing film 107 on the emission side of the liquid crystal display device 101, and is laid.
  • the repair film 1 has a two-layer structure having a highly transparent polyester layer 1b and an acrylic resin layer 1a. Has been done. Then, at a predetermined position of the acrylic resin layer la, peaks 2a and valleys 2b having a triangular shape, preferably an isosceles triangular shape as shown in FIG.
  • the prism portions 2 having the arranged cross sections are formed uniformly and precisely.
  • apex angle 9 0 °
  • prism pitch ⁇ 50 ⁇ m
  • thickness of film 1 is 15 5 ⁇ m (thickness from bottom to bottom of valley 2 b is 1 25 ⁇ )
  • the prism portion 2 is formed in a range corresponding to the green finoleta 103G (2) (a range corresponding to missing dots) in the film 1 for repair.
  • the range corresponding to the green filter 103G (2) includes, when viewed from the direction of the horizon, the green filter 103G (2) including the surrounding light shielding film 109. (The area enclosed by the dotted line X in the figure).
  • the peaks 2a and the valleys 2b of the prism portion 2 are formed in a straight line, and the peaks 2a and the valleys 2b are formed by green fins.
  • the green filters 103G (1) and the green filters 103G (3) on both sides of 3G (2) are alternately arranged.
  • a normal display portion (green filter 103G (1) and green filter 103) Part of the light emitted in the oblique direction from G (3)) is refracted by the prism surface 2c of the prism part 2 and combined as described in FIG. 4, and is combined in the vertical direction of the repair film 1 (see FIG. 5).
  • the light is emitted in the direction perpendicular to the paper. Therefore, it is possible to compensate for the missing dots and make it appear as if the light emission was normal in the display part (green filter 103G (2)) where the missing dots occurred on the screen. it can.
  • the prism section 2 since the size of the prism section 2 is determined as described above, the prism section 2 is positioned in the vertical direction with respect to the display section (green filter 103G (2)) where dots are missing. However, it is not positioned vertically with respect to a normal display section (green filter 103G (1), green filter 103G (3), etc.). Therefore, light emitted in the vertical direction from these normal display sections (green filter 103G (1), green filter 103G (3), etc.) is emitted without any hindrance, and A sharp image can be formed. In FIG. 4, light from two directions forming a predetermined angle with respect to the vertical line L has been described.
  • the maximum value is the thickness of the repair film 1 itself, and the minimum value is the thickness from the bottom of the repair film 1 to the bottom of the valley 2b. What should I do?
  • n J s i n (90 ° — a / 2) / s i n 0 i
  • ⁇ , sin — 1 (cos ⁇ / 2) / n,)
  • n J si ⁇ ⁇ 3 / s ⁇ n ⁇ 2
  • ⁇ 3 sin — 1 [ni ⁇ sin ⁇ 90. — CK / 2 _ S in -1 (cos (/ 2) / n J ⁇ ]
  • the acrylic resin layer 1 a is located at a predetermined position on the surface of the repair film 1, that is, in the above-mentioned area for dropout.
  • a metal bit 3 heated to the melting temperature of. Bit 3 has the same size (width C a + B a, length C b + B b) as the prism portion 2 to be formed, and has a peak portion 3 a and a valley portion 3 in an isosceles triangular shape.
  • b has a cross section alternately arranged at a fixed pitch.
  • the dropout can be compensated for by simply attaching the repair film 1 on which the prism portion 2 is formed without disassembling or processing the liquid crystal display device 101. Therefore, not only the manufacturing process of the liquid crystal display device 101 but also the missing dot can be easily compensated for even if the missing dot is found after completion.
  • the prism portion 2 may be formed by another method, for example, by laser processing, or by forming a diamond. It may be formed by cutting using the used cutting tool.
  • the prism portion 2 is formed after the unprocessed repair film 1 is attached to the liquid crystal display device 101, but before the prism film 2 is attached to the liquid crystal display device 101,
  • the prism portion 2 may be formed on the repair film 1 in advance.
  • the repair film 1 is attached to all the image display surfaces (all the surfaces of the polarizing film 107) of the liquid crystal display device 101 where the dot dropout occurred, and the repair was performed.
  • the example in which the prism part 2 is formed on a part of the surface of the film 1 is described above, but as shown in FIG. 9, the same size as the prism part 2 to be formed (width C a + B a, length C b
  • the repair finolem 1 may be cut at + B b), and the prism portion 2 may be formed on the entire surface of the repair fin.
  • the image display surface of the liquid crystal display device 101 may have irregularities, so the transparent film 4 is attached to a portion other than the portion where the repair film 1 is attached, and the surface is flushed. It is desirable to make it.
  • a hole 4a having the same size as the repair film 1 is formed in the transparent film 4, and the repair film 1 is positioned in the hole 4a. May be attached to the image display surface of the liquid crystal display device 101.
  • the present invention is applied to a liquid crystal display device having a color display function.
  • image display devices such as a TFT liquid crystal display device
  • the present invention may be applied to a liquid crystal display device other than the device, a plasma display, an EL display, and the like.
  • the prism portion 2 has been described as having a cross section in which peaks 2 a and valleys 2 b in an isosceles triangular shape are alternately arranged at a constant pitch T. This means that regularity is required, and at least one combination of the peak 2a and the valley 2b is required under the rule c.
  • the repair Although the linear peaks 2a and the valleys 2 are formed on the surface of the film 1, the peaks 2a and the valleys 2b may be formed annularly on the surface of the repair film 1.
  • the peaks 2a and the valleys 2b in the shape of an isosceles triangle have a cross section in which they are alternately arranged at a constant pitch T.
  • the peaks 2a and the valleys 2b are formed linearly as in the above embodiment, light from two directions (in the above embodiment, the green filter 103G (1) and the green filter 1 0 3 G (3)) compensates for missing dots.However, if the peaks 2 a and valleys 2 b are formed in a ring, the missing dots must be compensated for by 360 ° light from all directions. become. Industrial applicability
  • the dropout can be compensated for by simply attaching the repair film on which the prism portion is formed without disassembling or processing the image display device.
  • the dot missing can be easily compensated.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Si un défaut appelé «omission de points» apparaît dans une des parties d'affichage constituant un dispositif d'affichage à cristaux liquides (101), on colle un film de réparation (1) sur la face d'affichage d'image du dispositif d'affichage à cristaux liquides (101), et on forme sur la surface du film de réparation (1) une partie prisme (2) ayant une section dans laquelle alternent des crêtes (2a) et des creux (2b) d'une forme de triangle isocèle, de telle façon qu'une partie de la lumière émise obliquement à partir d'une partie normale d'affichage est réfractée, combinée par la partie prisme (2) et renvoyée dans une direction perpendiculaire au film de réparation (1).
PCT/JP2001/009100 2001-10-17 2001-10-17 Procede de reparation d'un dispositif d'affichage d'image, film de reparation et dispositif de reparation d'image WO2003034375A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2001/009100 WO2003034375A1 (fr) 2001-10-17 2001-10-17 Procede de reparation d'un dispositif d'affichage d'image, film de reparation et dispositif de reparation d'image
TW090126164A TW567350B (en) 2001-10-17 2001-10-23 Method for repairing of image display apparatus, film for repairing, and image display apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/009100 WO2003034375A1 (fr) 2001-10-17 2001-10-17 Procede de reparation d'un dispositif d'affichage d'image, film de reparation et dispositif de reparation d'image

Publications (1)

Publication Number Publication Date
WO2003034375A1 true WO2003034375A1 (fr) 2003-04-24

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Country Status (2)

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WO (1) WO2003034375A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007241067A (ja) * 2006-03-10 2007-09-20 Hitachi Displays Ltd 液晶表示パネル

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6251319U (fr) * 1985-09-18 1987-03-30
JPH04301616A (ja) * 1991-03-29 1992-10-26 Sharp Corp 液晶表示装置および液晶表示装置の欠陥修正方法
US5280374A (en) * 1991-03-01 1994-01-18 Sharp Kabushiki Kaisha Liquid crystal display device and method of compensating for a defect

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6251319U (fr) * 1985-09-18 1987-03-30
US5280374A (en) * 1991-03-01 1994-01-18 Sharp Kabushiki Kaisha Liquid crystal display device and method of compensating for a defect
JPH04301616A (ja) * 1991-03-29 1992-10-26 Sharp Corp 液晶表示装置および液晶表示装置の欠陥修正方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007241067A (ja) * 2006-03-10 2007-09-20 Hitachi Displays Ltd 液晶表示パネル

Also Published As

Publication number Publication date
TW567350B (en) 2003-12-21

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