KR100254925B1 - Method for manufacturing color filter used in liquid crystal display - Google Patents

Method for manufacturing color filter used in liquid crystal display Download PDF

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KR100254925B1
KR100254925B1 KR1019930002608A KR930002608A KR100254925B1 KR 100254925 B1 KR100254925 B1 KR 100254925B1 KR 1019930002608 A KR1019930002608 A KR 1019930002608A KR 930002608 A KR930002608 A KR 930002608A KR 100254925 B1 KR100254925 B1 KR 100254925B1
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color filter
forming
black matrix
layer
transfer
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KR1019930002608A
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Korean (ko)
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KR940020150A (en
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권병익
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구본준
엘지.필립스 엘시디주식회사
론 위라하디락사
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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
    • G02F1/133512—Light shielding layers, e.g. black matrix

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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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Filters (AREA)

Abstract

PURPOSE: A method for manufacturing a color filter for liquid crystal displays is provided to reduce resistance, form a color layer not having a layer difference, and increase surface smoothness by forming a transparent conductive layer and a black matrix successively and contacting them each other electrically. CONSTITUTION: High molecular resin is applied on a transfer sheet(9) to form an alignment layer(6). A transparent conductive layer(5) and a black matrix(2) are successively formed on the alignment layer(6) in a sputtering method or a vacuum deposition method. Then the black matrix(2) is etched so that a pattern can be formed. A color layer(3) is formed on the black matrix(2) to form a transfer part(10). When the transfer part(10) is transferred by a transparent substrate(1) on which an adhesive(7) is applied, a color filter is manufactured as the transfer part(10) is separated from the transfer sheet(9) and attached to the transparent substrate(1).

Description

액정디스플레이용 칼라필터 제조방법Manufacturing method of color filter for liquid crystal display

제1도는 종래 칼라필터 구조도.1 is a conventional color filter structure diagram.

제2(a),(b)도는 종래 칼라필터 제조공정도.2 (a) and 2 (b) show a conventional color filter manufacturing process.

제3도는 본 발명 액정디플레이용 칼라필터 구조도.3 is a structural diagram of a color filter for liquid crystal display of the present invention.

제4(a)도 내지 (d)도는 본 발명 액정디스플레이용 칼라필터 공정순서도.4 (a) to (d) are flowcharts of the color filter for liquid crystal display of the present invention.

제5도는 본 발명 액정디스플레이용 칼라필터 구성의 다른 실시예도.5 is another embodiment of the configuration of the color filter for liquid crystal display of the present invention.

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

1 : 투명기판 2 : 블랙매트릭스1: transparent substrate 2: black matrix

3 : 색채층 4 : 보호막3: color layer 4: protective film

5 : 투명전도막 6 : 배향막5: transparent conductive film 6: alignment film

7 : 접착제 8 : 전사기판7: adhesive 8: transfer substrate

9 : 전사시트 10 : 전사부9: transfer sheet 10: transfer unit

본 발명은 액정디스플레이용 칼라필터에 관한 것으로, 특히 공통전극의 저항을 낮추고 단차를 줄여 표면의 평활도를 높이도록 하는 액정디스플레이용 칼라필터 제조방법에 관한 것이다.The present invention relates to a color filter for a liquid crystal display, and more particularly to a method for manufacturing a color filter for a liquid crystal display to lower the resistance of the common electrode and reduce the step height to increase the smoothness of the surface.

제1도는 종래 칼라필터 구조도로서, 이에 도시된 바와같이 투명기판(1)위에 블랙매트릭스(2)가 형성되고, 그 위에 색채층(3)이 소정의 간격을 두고 다수개 형성되며, 상기 색채층(3)위에 보호막(4), 투명전도막(5), 배향막(6)이 연속으로 형성되어 칼라필터를 구성한다.FIG. 1 is a structure diagram of a conventional color filter. As shown therein, a black matrix 2 is formed on a transparent substrate 1, and a plurality of color layers 3 are formed thereon at predetermined intervals. (3) A protective film 4, a transparent conductive film 5, and an alignment film 6 are successively formed to constitute a color filter.

이와같이 구성되는 종래 칼라필터 제조방법을 첨부한 제2도를 참조하여 설명하면 다음과 같다.Referring to Figure 2 attached to a conventional color filter manufacturing method configured as described above is as follows.

제2(a),(b)도는 종래 칼라필터 제조공정도로서 제2(a)도에 도시된 바와같이 투명기판(1)위에 칼라 콘트라스트(Contrast)향상 및 액정소자로 사용되고 있는 박막트랜지스터 외부광에 의한 오프전류 증가방지를 위해 크롬 또는 크롬산화막등을 스퍼터링이나 진공증착 방법을 이용하여 도포한후 소정의 패턴이 있는 포토마스크를 사용해 사진식각방법으로 블랙매트릭스(2)를 형성하고, 그 위에 색채층(3)을 균일하게 스핀코팅 한후 사진식각법, 전기영동법, 및 인쇄법등으로 식각하여 다수개의 색채층(3)을 형성한다.2 (a) and 2 (b) show a conventional process for manufacturing a color filter. As shown in FIG. 2 (a), color contrast is improved on the transparent substrate 1 and thin film transistors are used as external liquid crystals. In order to prevent the increase of off current, chromium or chromium oxide film is applied by sputtering or vacuum deposition, and then a black matrix 2 is formed by photolithography using a photomask with a predetermined pattern, and a color layer is formed thereon. After 3) uniformly spin coating, a plurality of color layers 3 are formed by etching by photolithography, electrophoresis, printing, and the like.

이후, 제2(b)도에 도시된 바와같이 상기 색채층(3)위에 투명 고분자 재료를 도포하여 보호막(4)을 증착한후 그 위에 스퍼터링이나 진공증착방법으로 투명전극으로 사용하는 투명전도막(5)을 형성하고, 그 위에 배향막(6)을 도포하여 칼라필터를 제조하였다. 한편, 다른 제조방법으로는 먼저 색채층(3)을 형성한후 그 위에 블랙매트릭스(2)와 투명전도막(5)을 형성하는 방법이 있다.Thereafter, as shown in FIG. 2 (b), a transparent polymer material is coated on the color layer 3 to deposit a protective film 4, and then a transparent conductive film used as a transparent electrode by sputtering or vacuum deposition thereon. (5) was formed and the alignment film 6 was apply | coated on it, and the color filter was manufactured. On the other hand, another manufacturing method is a method of first forming the color layer (3) and then forming the black matrix (2) and the transparent conductive film (5) thereon.

그러나, 상기와 같이 제조되는 종래의 칼라필터는 블랙매트릭스(2)와 투명전도막(5)이 색채층(3)과 보호막(4)에 의해 떨어져 있어 투명전도막(5)의 저항이 높고, 색채층(3)의 표면단차로 인해 칼라필터의 표면 평활성이 저하되는 문제점이 있다.However, in the conventional color filter manufactured as described above, since the black matrix 2 and the transparent conductive film 5 are separated by the color layer 3 and the protective film 4, the resistance of the transparent conductive film 5 is high, There is a problem that the surface smoothness of the color filter is lowered due to the surface step of the color layer (3).

또한, 색채층(3)을 형성한후 블랙매트릭스(2)와 투명전도막(5)을 형성하여 칼라필터를 제조하나 이것은 색채층(3)에 손상을 주기 쉬운 문제점이 있었다.In addition, after the color layer 3 is formed, a black matrix 2 and a transparent conductive film 5 are formed to produce a color filter, but this has a problem of easily damaging the color layer 3.

본 발명은 이러한 문제점을 해결하기 위하여 투명전도막과 블랙매트릭스를 연속으로 형성하여 전기적 접촉함으로써 저항을 줄이고, 단차가 없는 색채층을 형성하고 이를 전착전사법으로 전사시켜 표면 평활성을 높이도록 하는 액정디스플레이용 칼라필터 제조방법을 창안한 것으로, 이를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.In order to solve this problem, the present invention forms a transparent conductive film and a black matrix continuously to reduce electrical resistance by making electrical contact, forms a color layer without a step, and transfers it by electrodeposition transfer to increase surface smoothness. Invented a method for manufacturing a color filter for, which will be described in detail with reference to the accompanying drawings.

한편 전착전사법은 플렉시블(Flexible)한 전사기판위에 전사시트를 형성하고, 그 전사시트위에 전사하고자하는 전사부를 형성한후 이 전사부를 전사하는 방법이다.The electrodeposition transfer method is a method of forming a transfer sheet on a flexible transfer substrate, forming a transfer portion to be transferred on the transfer sheet, and then transferring the transfer portion.

제3도는 본 발명 액정디스플레이용 칼라필터 구조도로서 이에 도시한 바와같이 투명기판(1)위에 색채층(3)이 접착제(7)로 접착되어 있고, 상기 색채층(3)위에 블랙매트릭스(2)가 형성되며, 상기 블랙매트릭스(2)위에 투명전도막(5), 배향막(6)이 연속형성되어 칼라필터를 구성한다.3 is a schematic diagram of a color filter for a liquid crystal display according to the present invention. As shown in the drawing, a color layer 3 is adhered to the transparent substrate 1 with an adhesive agent 7, and a black matrix 2 is formed on the color layer 3. Is formed, and a transparent conductive film 5 and an alignment film 6 are continuously formed on the black matrix 2 to form a color filter.

이와같이 구성한 본 발명 액정디스플레이용 칼라필터 제조방법을 첨부한 제4도를 참조하여 설명하면 다음과 같다.Referring to FIG. 4 attached to the present invention, the method for manufacturing a color filter for a liquid crystal display configured as described above is as follows.

제4(a)도 내지 (c)도는 본 발명 액정디스플레이용 칼라필터 공정순서도로서, 제4(a)도에 도시된 바와같이 플렉시블한 전사기판(8)위에 전사시트(9)를 형성한다.4 (a) to (c) are process flow charts of the color filter for the liquid crystal display of the present invention, wherein the transfer sheet 9 is formed on the flexible transfer substrate 8 as shown in FIG. 4 (a).

이후 제4(b)도에 도시한 바와같이 상기 전사시트(9)위에 고분자 수지를 도포하여 배향막(6)을 형성한후 그 위에 투명전극인 투명전도막(5)과 블랙매트릭스(2)을 스퍼터링이나 진공증착법으로 연속형성한 다음 상기 블랙매트릭스(2)를 사진식각방법으로 식각하여 패턴을 형성하고, 패턴이 형성된 블랙매트릭스(2)위에 사진식각법 전기영동법 인쇄법등으로 색채층(3)을 형성하여 전사부(10)를 형성한다.Thereafter, as shown in FIG. 4 (b), a polymer resin is coated on the transfer sheet 9 to form an alignment layer 6, and then the transparent conductive film 5 and the black matrix 2, which are transparent electrodes, are formed thereon. After continuous formation by sputtering or vacuum deposition, the black matrix 2 is etched by photolithography to form a pattern, and the color layer 3 is formed on the black matrix 2 on which the pattern is formed by photolithography and electrophoresis printing. To form the transfer portion 10.

이후 제4(c)도에 도시한 바와같이, 상기 전사시트(9)위의 전사부(10)를 접착제(7)가 도포된 투명기판(1)으로 전사하면, 제4(d)도에 도시한 바와같이 전사부(10)가 전사시트(9)와 분리되어 투명기판(1)과 접착되면서 칼라필터가 제조된다.Thereafter, as shown in FIG. 4 (c), when the transfer part 10 on the transfer sheet 9 is transferred to the transparent substrate 1 coated with the adhesive agent 7, the transfer part 10 on FIG. As shown in the drawing, the transfer part 10 is separated from the transfer sheet 9 and bonded to the transparent substrate 1 to produce a color filter.

또한, 본 발명 액정디스플레이용 칼라필터를 다음과 같이 제조할 수 있다.In addition, the color filter for liquid crystal display of the present invention can be produced as follows.

즉 전사기판(8)위에 전사시트(9)를 형성한후 그 위에 블랙매트릭스(2)를 형성하여 패터닝하고, 상기 블랙매트릭스(2)위에 투명전도막(5)을 증착한후 그 위에 R,G,B의 색채층(3)을 순차적으로 형성하여 전사부(10)를 형성한다.That is, after forming the transfer sheet 9 on the transfer substrate (8), and formed by forming a black matrix (2) on it, depositing a transparent conductive film (5) on the black matrix (2) and then R, The transfer layer 10 is formed by sequentially forming the color layers 3 of G and B.

이후 상기 전사부(10)를 접착제(7)가 도포된 투명기판(1)에 전사한 후 상기 블랙매트릭스(2)위에 배향막(6)을 형성하여 액정디스플레이용 칼라필터를 제조할수 있게 된다.Thereafter, the transfer unit 10 is transferred onto the transparent substrate 1 coated with the adhesive 7, and then an alignment layer 6 is formed on the black matrix 2 to manufacture a color filter for a liquid crystal display.

한편, 제5도는 본 발명 액정디스플레이용 칼라필터의 다른 구성도로서, 이에 도시한 바와같이 투명기판(1)위에 색채층(3)이 접착제(7)로 접착되고 상기 색채층(3)위에 투명전도막(5) 블랙매트릭스(2), 배향막(6)이 연속형성되어 구성된다.On the other hand, Figure 5 is another configuration of the color filter for the liquid crystal display of the present invention, as shown in the color layer 3 on the transparent substrate 1 is bonded with an adhesive (7) and transparent on the color layer (3) The conductive film 5, the black matrix 2, and the alignment film 6 are formed continuously.

이와같이 제조되는 액정디스플레이용 칼라필터는 전사기판(8)위에 형성한 전사시트(9)위에 전사부(10)를 형성할시 배향막(6)위에 블랙매트릭스(2)를 형성하여 패터닝한 다음 그 블랙매트릭스(2)위에 투명전도막(5)과 색채층(3)을 연속형성하여 전사부(10)를 형성한다.The color filter for liquid crystal display manufactured as described above is patterned by forming a black matrix (2) on the alignment layer (6) when the transfer portion (10) is formed on the transfer sheet (9) formed on the transfer substrate (8). The transfer portion 10 is formed by continuously forming the transparent conductive film 5 and the color layer 3 on the matrix 2.

이후, 이 전사부(10)를 접착제(7)가 도포된 투명기판(1)위에 전사하여 칼라필터를 제조한다.Thereafter, the transfer unit 10 is transferred onto the transparent substrate 1 to which the adhesive 7 is applied to manufacture a color filter.

상기에서 설명한 바와같이 본 발명은 투명전도막과 블랙매트릭스를 연속형성하므로 전기적접촉에 의해 저항이 낮아지며, 색채층을 단착없는 색채층을 형성하므로 평활도를 높일수 있을 뿐만아니라 투명전도막과 블랙매트릭스 형성후에 색채층을 형성하여 전착전사법을 이용해 칼라필터를 제조함으로써 색채층에 손상이 가해지지 않는 효과가 있다.As described above, the present invention continuously forms the transparent conductive film and the black matrix, so that the resistance is lowered by electrical contact, and the color layer forms a colorless layer without bonding, thereby increasing the smoothness, as well as after the transparent conductive film and the black matrix are formed. By forming the color layer and manufacturing the color filter using the electrodeposition transfer method, there is an effect that the color layer is not damaged.

Claims (4)

전사기판(8)위에 전사시트(9)를 형성하는 단계와, 전사시트(9)위에 전사부(10)를 형성하는 단계와, 상기 전사부(10)를 접착제(7)가 도포된 투명기판(1)에 전사하는 단계로 제조함을 특징으로 하는 액정디스플레이용 칼라필터 제조방법.Forming a transfer sheet 9 on the transfer substrate 8, forming a transfer portion 10 on the transfer sheet 9, and applying the adhesive 7 to the transfer portion 10. The color filter manufacturing method for a liquid crystal display characterized by manufacturing by the step of transferring to (1). 제1항에 있어서, 전사부(10)를 형성하는 단계는 전사시트(9)위에 배향막(6)을 형성한후 그 위에 투명전도막(5)과, 블랙매트릭스(2)를 연속 형성한 다음 그 위에 색채층(3)을 형성하는 과정으로 이루어짐을 특징으로 하는 액정디스플레이용 칼라필터 제조방법.The method of claim 1, wherein the forming of the transfer part 10 comprises forming an alignment layer 6 on the transfer sheet 9, and then successively forming the transparent conductive layer 5 and the black matrix 2 thereon. Color filter manufacturing method for a liquid crystal display, characterized in that the process consisting of forming a color layer (3) thereon. 제1항에 있어서, 전사부(10)를 형성하는 단계는 전사시트(9)위에 배향막(6)을 형성한후 블랙매트릭스(2)를 형성하여 패터닝하고, 상기 패턴된 블랙매트릭스(2)위에 투명전도막(5), 색채층(3)을 연속형성하는 과정으로 이루어짐을 특징으로 하는 액정디스플레이용 칼라필터 제조방법.The method of claim 1, wherein the forming of the transfer part 10 is performed by forming an alignment layer 6 on the transfer sheet 9, and then forming and patterning a black matrix 2 on the patterned black matrix 2. Method for producing a color filter for a liquid crystal display, characterized in that the transparent conductive film (5), consisting of a process of continuously forming the color layer (3). 제1항에 있어서 전사부(10)를 형성하는 단계는, 전사시트(9)위에 블랙매트릭스(2)를 형성하여, 패터닝한후 투명전도막(5), 색채층(3)을 연속형성하는 과정으로 이루어짐을 특징으로 하는 액정디스플레이용 칼라필터 제조방법.The method of claim 1, wherein the forming of the transfer part 10 comprises forming a black matrix 2 on the transfer sheet 9, patterning the same, and subsequently forming the transparent conductive film 5 and the color layer 3. Color filter manufacturing method for a liquid crystal display, characterized in that made of a process.
KR1019930002608A 1993-02-24 1993-02-24 Method for manufacturing color filter used in liquid crystal display KR100254925B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101279231B1 (en) 2006-06-27 2013-06-26 엘지디스플레이 주식회사 Transfer film liquid crystal display device fabricated using the same and fabricating method for the liquid crystal display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101279231B1 (en) 2006-06-27 2013-06-26 엘지디스플레이 주식회사 Transfer film liquid crystal display device fabricated using the same and fabricating method for the liquid crystal display device

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