KR0182046B1 - Method of repairing color filter substrate for liquid crystal display device - Google Patents

Method of repairing color filter substrate for liquid crystal display device Download PDF

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Publication number
KR0182046B1
KR0182046B1 KR1019950066719A KR19950066719A KR0182046B1 KR 0182046 B1 KR0182046 B1 KR 0182046B1 KR 1019950066719 A KR1019950066719 A KR 1019950066719A KR 19950066719 A KR19950066719 A KR 19950066719A KR 0182046 B1 KR0182046 B1 KR 0182046B1
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South Korea
Prior art keywords
color filter
filter substrate
laser
film
color
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KR1019950066719A
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Korean (ko)
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KR970054277A (en
Inventor
신선수
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김광호
삼성전자주식회사
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    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters

Abstract

본 발명은 LCD 컬러 필터 기판의 수리 방법에 관한 것으로서, 컬러 필터 기판 제조 과정중에 발생한 돌기나 흑결점을 레이저로 제거한 후에 그 부위를 같은 크기로, 해당하는 색상의 필름을 잘라 붙여서 수리한다.The present invention relates to a method for repairing an LCD color filter substrate, wherein the projections or black defects generated during the manufacturing process of the color filter substrate are removed with a laser, and the portions thereof are cut to the same size, and the film of the corresponding color is cut out and repaired.

이렇게 함으로서 제거된 부분의 생상을 그대로 재현할 수 있다.In this way, the reproduction of the removed portion can be reproduced as it is.

Description

액정 표시 장치용 컬러 필터 기판의 수리 방법Repair method of color filter board for liquid crystal display device

제1도(a) 및 (b)는 종래 기술에 따른 LCD 컬럴 필터 기판의 수리방법 중 레이저로 제거하는 수리 방법을 공정순서에 따라 나타낸 단면도이고,1 (a) and (b) are cross-sectional views showing a repair method for removing with a laser in the repair method of the LCD floral filter substrate according to the prior art according to the process sequence,

제2도(a) 및 (b)는 종래 기술에 따른 LCD 컬러 필터 기판의 수리 방법 중 레이저로 제거한후 잉크로 메우는 수리 방법을 공정 순서에 따라 나타낸 단면도이고,2 (a) and (b) are cross-sectional views showing the repair method of filling the ink after removal with a laser in the repair method of the LCD color filter substrate according to the prior art,

제3도(a) 및 (b)는 종래 기술에 따른 LCD 컬러 필터 기판의 수리 방법 중 연마기를 사용해 연마하는 수리 방법을 공정 순서에 따라 나타낸 단면도이고,3 (a) and (b) are cross-sectional views showing a repair method for polishing using a polishing machine of the LCD color filter substrate according to the prior art according to the process sequence,

제4도(a) 내지 (e)는 본 발명이 한 실시예에 따른 LCD 컬러 필터 기판의 수리 방법을 공정 순서에 따라 나타낸 단면도이다.4A to 4E are cross-sectional views illustrating a method of repairing an LCD color filter substrate according to an embodiment of the present invention, according to a process sequence.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 기판 2 : 블랙 매트릭스1: substrate 2: black matrix

3 : 적색 컬러 필터 4 : 녹색 컬러 필터3: red color filter 4: green color filter

5 : 청색 컬러 필터 6 : 흑색 필름5: blue color filter 6: black film

7 : 적색 필름 8 : 녹색 필름7: red film 8: green film

9 : 청색 필름 10 : 공통 전극9: blue film 10: common electrode

11 : 잉크 12 : 돌기나 흑결점11 ink 12 projections or black blemishes

본 발명은 컬러 필터 기판의 수리 방법에 관한 것으로서, 더욱 상세하게는, LCD(liquid crystal display) 컬러 필터 기판의 수리 방법에 관한 것이다.The present invention relates to a method for repairing a color filter substrate, and more particularly, to a method for repairing a liquid crystal display (LCD) color filter substrate.

일반적으로 LCD 컬러 필터의 제조 과정에서 형성된 돌기나 흑결점을 제거하는 방법으로는 레이저로 돌기나 흑결점을 제거만 하는 방법, 레이저로 제거 후 잉크를 사용하는 방법, 연마기를 사용하는 방법 들이 있다.Generally, as a method of removing protrusions or black blemishes formed in the manufacturing process of LCD color filters, there is a method of only removing protrusions or black blemishes with a laser, using ink after removing with a laser, and using a polishing machine.

그러면 첨부한 도면을 참고로 하여 LCD 컬러 필터 기판의 수리 방법에 대하여 더욱 상세하게 설명한다.Next, the repairing method of the LCD color filter substrate will be described in more detail with reference to the accompanying drawings.

제1도(a) 및 (b)는 종래의 LCD 컬러 필터 기판의 수리 방법 중 레이저 제거만 사용하는 경우를 나타내는 도면이고, 제2도(a) 및 (b)는 종래의 LCD 컬러 필터 기판의 수리 방법 중 레이저 제거 후 잉크를 사용하는 경우, 제3도(a) 및 (b)는 연마기를 사용하는 경우를 각각 나타내는 도면이다.1 (a) and (b) are diagrams showing the case of using only laser removal in the conventional repair method of the LCD color filter substrate, Figure 2 (a) and (b) is a view of the conventional LCD color filter substrate In the case of using the ink after laser removal in the repair method, FIGS. 3A and 3B are diagrams respectively showing a case of using a polishing machine.

제1도 내지 제3도에 도시한 바와 같이, 종래의 LCD 컬러 필터는 기판(1) 위에 블랙 매트릭스(2)가 있고, 적색, 녹색, 청색의 필터(3, 4, 5)가 각각의 블랙 매트릭스(2) 사이에 형성되어 있고, 그 위에 공통 전극(10)이 형성된 구조로 되어 있다.As shown in Figs. 1 to 3, the conventional LCD color filter has a black matrix 2 on the substrate 1, and the red, green, and blue filters 3, 4, and 5 are each black. It is formed between the matrices 2, and the common electrode 10 is formed on it.

이러한 종래의 LCD 컬러 필터의 수리 방법 중 레이저 수리만 사용하는 경우는, 제1도에 도시한 바와 같이 컬러 필터(3, 4, 5)에 형성된 돌기(12)에 레이저로 열을 가하여 태워 제거한 후 공통 전극(10)을 형성한다.In the case of using only laser repair in the conventional repair method of the LCD color filter, as shown in FIG. 1, the projections 12 formed on the color filters 3, 4, and 5 are heated with a laser and burned out. The common electrode 10 is formed.

또 제2도에 도시한 바와 같이 레이저 수리 후 잉크를 사용하는 경우는 컬러 필터(3, 4, 5)에 형성된 돌기(12)에 레이저로 열을 가하여 돌기(12)를 태워서 제거한후, 그 제거된 부분을 잉크(11)로 메우고, 잉크를 경화시키기 위해 노광·현상한 후 큐어링(curing)한 후에 공통 전극(10)을 형성한다.In addition, as shown in FIG. 2, when ink is used after laser repair, heat is applied to the projections 12 formed on the color filters 3, 4, and 5 with a laser to burn the projections 12, and then remove them. The common portion 10 is filled with the ink 11, exposed and developed to cure the ink, and then cured.

제3도에 도시한 바와 같이 연마기를 사용하는 경우는 컬러 필터(3, 4, 5)에 형성된 돌기(12)를 연마기로 깎아낸 후 공통 전극(10)을 형성한다. 이러한 종래의 수리 방법에서, 레이저 수리를 사용하는 경우에는 적색, 청색, 적색 필터 형성 중이거나 형성 후에는 각각의 필터에 레이저 열에 의한 충격이 있어 색재현이 어렵고, 또 제거한 부위의 크기가 100㎛이상이 되면 화소 결함으로 검출된다는 문제점이 있다.In the case of using a polishing machine as shown in FIG. 3, the projection 12 formed on the color filters 3, 4, and 5 is scraped off with a polishing machine to form a common electrode 10. FIG. In such a conventional repair method, in the case of using laser repair, red, blue, and red filters are formed, or after the formation, each filter has an impact caused by laser heat, which makes color reproduction difficult and the size of the removed portion is 100 μm or more. In this case, there is a problem that it is detected as a pixel defect.

또 레이저 수리 후 결점이 제거된 부위를 잉크로 메워 완전 수리하는 방법도 있지만, 이 방법에서는 잉크를 경화시키기 위한 노광, 현상 또는 세정, 회복 등의 공정이 필요하고, 이 또한 제거된 부위가 큰 경우에는 색 표현이 되지 않는다는 문제가 있다.There is also a method of completely repairing the defect-removed area with ink after laser repair, but this method requires a process such as exposure, development or cleaning, recovery, etc. to cure the ink. There is a problem that the color expression does not work.

그리고 연마기를 사용하는 방법은, 컬러 필터에 남아 있는 흑결점의 수리가 불가능하고 외부의 돌기는 제거할 수 있으나 이 또한 제거된 부위가 크면 색을 재현할 수가 없고, 금속성의 딱딱한 물질로 형성된 돌기는 제거가 곤란하다는 문제도 가지고 있다.In the method using a grinder, black defects remaining in the color filter cannot be repaired and external protrusions can be removed. However, if the removed part is large, the color cannot be reproduced. There is also a problem that removal is difficult.

본 발명의 목적은 이러한 문제점을 해결하기 위한 것으로서, 돌기가 제거된 부분에 각각의 색을 갖는 필름을 사용하여 수리함으로써 컬러 필터의 불량을 수리하는 것이다.An object of the present invention is to solve this problem, and to repair the defect of the color filter by repairing by using the film having the respective color in the portion where the projection is removed.

이러한 목적을 달성하기 위한 본 발명에 따른 컬러 필터 기판의 수리 방법은, LCD 컬러 필터 또는 블랙 매트릭스의 돌기나 흑결점을 레이저로 제거하는 단계, 제거된 부위를 해당하는 색상의 컬러 필름으로 메우는 단계를 포함하고 있다.In order to achieve the above object, a method of repairing a color filter substrate according to the present invention may include: removing laser projections or black defects of an LCD color filter or black matrix, and filling the removed area with a color film of a corresponding color. It is included.

본 발명에 따른 이러한 LCD 컬러 필터 기판은, 각 필터의 특성을 그대로 가질 수 있다.Such an LCD color filter substrate according to the present invention may have the characteristics of each filter as it is.

그러면, 첨부한 도면을 참고로 하여 본 발명에 따른 LCD 컬러 필터 기판의 수리 방법의 한 실시예를 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할수 있을 정도로 상세히 설명한다.Then, an embodiment of a repair method of the LCD color filter substrate according to the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out.

제4도(a) 내지 (f)는 본 발명의 한 실시예에 따른 LCD 컬러 필터 기판의 수리 방법을 나타내는 도면이다.4 (a) to (f) are views showing a repair method of the LCD color filter substrate according to an embodiment of the present invention.

제4도(a) 내지 (d)에 도시한 바와 같이 일반적인 LCD 컬러 필터 기판의 제조 방법은, 가판(1) 위에 블랙 매트릭스(2)를 형성한 후, 그 사이에 적색, 녹색, 청색의 컬러 필터(3, 4, 5)를 차례롤 형성하는 공정으로 이루어진다.As shown in Figs. 4A to 4D, a method of manufacturing a general LCD color filter substrate is performed by forming a black matrix 2 on the substrate 1, and thereafter, red, green, and blue colors. It consists of the process of forming the filter 3, 4, 5 one by one.

그 다음 제4도(e)에 도시한 바와 같이 각 컬러 필터(3, 4, 5)나 블랙 매트릭스(2)에 발생한 돌기나 흑결점(12)을 레이저로 제거한 다음, 제4도(f)에 도시한 바와 같이 제거된 부위만큼의 크기로 각각의 컬러 필름(7, 8, 9)을 잘라 제거된 부위를 메운다.Then, as shown in FIG. 4E, projections or black defects 12 generated in each of the color filters 3, 4, and 5 or the black matrix 2 are removed with a laser, and then, FIG. As shown in the drawings, each color film 7, 8, and 9 is cut to the size of the removed portion to fill the removed portion.

이때, 컬러 필름은 제거된 부위에 따라, 적색 컬러 필터에는 적색 필름(7), 녹색 컬러 필터에는 녹색 필름(8), 청색 컬러 필터에는 청색필름(9), 블랙 매트릭스에는 흑색 필름(6)을 사용한다.At this time, according to the removed portion of the color film, a red film (7) for the red color filter, a green film (8) for the green color filter, a blue film (9) for the blue color filter, a black film (6) for the black matrix use.

그 다음 220℃, 10분 이상으로 열처리하여 컬러 필름(6, 7, 8, 9)이 완전 경화되도록 밀착시킨 후에 1200Å∼2000Å의 두께로 공통 전극(10)을 형성한다.After heat treatment at 220 ° C. for 10 minutes or more, the color films 6, 7, 8, and 9 are brought into close contact with each other to completely cure, and then the common electrode 10 is formed to a thickness of 1200 Å to 2000 Å.

따라서 본 발명에 따른 LCD 컬러 필터 기판의 수리 방법은 돌기나 흘결점의 크기가 크더라도 제거 후에 색재현이 가능한 효과가 있다.Therefore, the repair method of the LCD color filter substrate according to the present invention has an effect that can be reproduced after removal even if the size of the projections or flaws are large.

Claims (4)

LCD 컬러 필터의 불순물을 레이저로 제거하는 단계, 제거된 부위를 해당하는 색상의 컬러 필름으로 메우는 단계를 포함하는 LCD 컬러 필터 기판의 수리 방법.A method of repairing an LCD color filter substrate, comprising the steps of: laser removing impurities in the LCD color filter, and filling the removed region with a color film of a corresponding color. 제1항에서, 상기 컬러 필름을 열처리하여 완전 경화되도록 하는 단계를 더 포함하는 LCD 컬러 필터 기판의 수리 방법.The method of claim 1, further comprising the step of heat treating the color film to completely cure. 블랙매트릭스에 발생한 불순물을 레이저로 제거하는 단계, 제거된 부위를 흑색의 컬러 필름으로 메우는 단계를 포함하는 LCD 컬러 필터 기판의 수리 방법.A method for repairing an LCD color filter substrate, comprising the steps of: removing impurities generated in a black matrix with a laser; and filling the removed portions with a black color film. 제3항에 있어서, 상기 흑색 필름을 열처리하여 완전 경화되도록 하는 단계를 더 포함하는 LCD 컬러 필터 기판의 수리 방법.4. The method of claim 3, further comprising the step of heat treating the black film to complete curing.
KR1019950066719A 1995-12-29 1995-12-29 Method of repairing color filter substrate for liquid crystal display device KR0182046B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100431624B1 (en) * 1996-08-23 2004-08-12 삼성전자주식회사 Method for repairing pixel defects including step of spraying pigment material to pixels with defects
KR100662786B1 (en) * 2004-06-30 2007-01-02 엘지.필립스 엘시디 주식회사 Apparatus for grinding protrusion in color filter layer
US7502094B2 (en) 2005-02-15 2009-03-10 Samsung Electronics Co., Ltd. Repairing device and repairing method for display device
KR101039261B1 (en) * 2009-05-21 2011-06-07 (주)미래컴퍼니 Method for solving pixel non-uniformity of liquid crystal display and Heat treatment apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100431624B1 (en) * 1996-08-23 2004-08-12 삼성전자주식회사 Method for repairing pixel defects including step of spraying pigment material to pixels with defects
KR100662786B1 (en) * 2004-06-30 2007-01-02 엘지.필립스 엘시디 주식회사 Apparatus for grinding protrusion in color filter layer
US7502094B2 (en) 2005-02-15 2009-03-10 Samsung Electronics Co., Ltd. Repairing device and repairing method for display device
KR101039261B1 (en) * 2009-05-21 2011-06-07 (주)미래컴퍼니 Method for solving pixel non-uniformity of liquid crystal display and Heat treatment apparatus

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