KR100400163B1 - Method for manufacturing low reflective color filter substrate - Google Patents

Method for manufacturing low reflective color filter substrate Download PDF

Info

Publication number
KR100400163B1
KR100400163B1 KR1019960047496A KR19960047496A KR100400163B1 KR 100400163 B1 KR100400163 B1 KR 100400163B1 KR 1019960047496 A KR1019960047496 A KR 1019960047496A KR 19960047496 A KR19960047496 A KR 19960047496A KR 100400163 B1 KR100400163 B1 KR 100400163B1
Authority
KR
South Korea
Prior art keywords
color filter
patterns
filter substrate
black matrix
red
Prior art date
Application number
KR1019960047496A
Other languages
Korean (ko)
Other versions
KR19980028440A (en
Inventor
노수귀
Original Assignee
삼성전자주식회사
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 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1019960047496A priority Critical patent/KR100400163B1/en
Publication of KR19980028440A publication Critical patent/KR19980028440A/en
Application granted granted Critical
Publication of KR100400163B1 publication Critical patent/KR100400163B1/en

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133514Colour filters
    • G02F1/133516Methods for their manufacture, e.g. printing, electro-deposition or photolithography

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE: A method is provided to achieve improved reliability of color filter by easily forming flat red, green and blue patterns. CONSTITUTION: A method comprises a step of forming red, green and blue patterns on a color filter substrate; a step of forming photosensitive film patterns for a black matrix(3) on the front surface of the color filter substrate in such a manner that the patterns are superimposed with each other on the edges of the red, green and blue patterns; and a step of removing the superimposed portion of the photosensitive film.

Description

저반사 칼라필터기판의 제조방법Method for manufacturing low reflection color filter substrate

본 발명은 저반사 칼라필터기판의 제조방법에 관한 것으로, 더욱 상세하게는 적, 녹, 청색 패턴들(R),(G),(B)의 가장자리들에 격자형태로 중첩되는 블랙 매트리스의 중첩부분을 적절한 노광조건과 현상조건에서 제거하여 적, 녹, 청색 패턴들(R),(G),(B)의 표면을 평탄화함으로써 칼라필터기판의 신뢰성을 향상시키도록 한 저반사 칼라필터기판의 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a low reflection color filter substrate, and more particularly, to a method of manufacturing a low reflection color filter substrate by superposing a black mattress superimposed in a lattice pattern on edges of red, green, and blue patterns R, G, Reflective color filter substrate to improve the reliability of the color filter substrate by flattening the surfaces of the red, green, and blue patterns R, G, and B by removing the portions of the red, And a manufacturing method thereof.

최근 화상정보의 전달매체로서 표시장치의 소형화 및 고품질화에 대한 관심이 집중됨에 따라 지금까지 사용되어 왔던 CRT(cathode ray tube)의 크고 무거운 단점을 해결할 수 있는 새로운 평판표시장치들이 개발되었다. 이러한 평판표시장치들중의 하나인 액정표시장치는 경박단소의 장점을 갖고 있어 CRT의 크고 무거운 단점을 해소할 수 있었다.Recently, attention has been focused on the miniaturization and high quality of display devices as a transmission medium of image information, and new flat panel display devices that can solve the large and heavy disadvantages of CRT (cathode ray tube) that have been used so far have been developed. One of such flat panel display devices has advantages of light and thin liquid crystal display, which can overcome a large and heavy drawback of the CRT.

액티브형 매트릭스형 액정표시장치는 매트릭스 형태로 배열된 각 화소들에 배선형 특성을 갖춘 액티브 소자들이 부가되어 액정의 전기광학적 효과에 메모리 기능이 구비된 것으로, 통상의 박막트랜지스터 또는 박막다이오드가 매트릭스의 화소선택형 어드레스 배선과 함께 유리 기판상에 수 만개 내지 수 백만개 집적화되어 매트릭스 회로를 구성하고 있다.In the active matrix type liquid crystal display device, active elements having wiring-type characteristics are added to each pixel arranged in a matrix form, and a memory function is provided for the electro-optic effect of the liquid crystal. In a typical thin film transistor or a thin film diode, Several tens of thousands to several millions of pixels are integrated on a glass substrate together with the pixel selection type address wiring to constitute a matrix circuit.

액티브형 매트릭스형 액정표시장치용 저반사 칼라필터를 이룩하기 위해 종래에는 칼라필터용 기판에 CrOx/Cr층으로 이루어진 다층 블랙 매트릭스를 형성하여 왔다. 이는 패널의 저반사를 달성할 수 있었으나 제조공정의 복잡화와 이로 인한 결함 발생율의 증가, 제조 원가의 상승, 제조공정중에 발생되는 오염 물질로 인한 환경 규제를 피하기 어려운 문제점이 있었다.In order to achieve a low reflection color filter for an active matrix liquid crystal display device, a multilayer black matrix made of a CrOx / Cr layer has been conventionally formed on a substrate for a color filter. This can achieve low reflection of the panel, but it has a problem that it is difficult to avoid environmental complaints due to the complication of the manufacturing process, the increase of the defect occurrence rate, the increase of the manufacturing cost, and the pollutants generated during the manufacturing process.

최근에는 이러한 문제점을 해결하기 위한 방안의 하나로서 블랙 매트릭스를 Cr 박막 대신에 유기탄소 감광막으로 형성하는 방안이 활발히 개발되고 있는 중이다. 하지만, 이 방법은 칼라필터기판 위에 적, 녹, 청색의 패턴들을 형성할 때 유기탄소 감광막으로 이루어진 블랙 매트릭스와 적, 녹, 청색의 패턴과의 중첩되는 부분의 단차가 높으므로 액정 주입공정시 칼라필터기판과 TFT기판 사이의 셀 간격을 일정하게 유지할 수 없는 불량을 유발시키는 문제점을 갖고 있었다.Recently, as a method for solving such a problem, a method of forming a black matrix as an organic carbon photoresist film instead of a Cr thin film is being actively developed. However, in this method, when the red, green and blue patterns are formed on the color filter substrate, the step of the overlapped portion of the black matrix made of the organic carbon photosensitive film and the pattern of red, green and blue is high, The cell spacing between the filter substrate and the TFT substrate can not be maintained constant.

이를 개선하기 위해 적, 녹, 청색의 패턴을 부분적으로 픽셀 도트타입(dot type)으로 전환하는 방안도 제시되었다.In order to solve this problem, a method of converting a pattern of red, green and blue into a pixel dot type has been proposed.

그러나, 이 방법 또한 미스얼라인(misalign)에 대한 적절한 해결 방법을 갖고 있지 않았다. 즉, 도 1에 도시된 바와 같이, 칼라필터기판(1) 위에 적, 녹, 청색 패턴들(R),(G),(B)이 형성할 때 미스얼라인이 발생하면, 유기탄소 감광막으로 이루어진 블랙 매트릭스(3)와 사각형상의 패턴들(R),(G),(B)과의 중첩되는 부분, 즉 패턴들(R),(G),(B)의 양측 가장자리를 따라 중첩 패턴들(5)이 길게 형성된다. 이 중첩패턴들(5)은 수 μm의 폭과 수천 내지 수만 Å의 높이를 갖고 있어 공통전극인 ITO 막을 상기 중첩패턴들(5)과 블랙 매트릭스(3) 위에 도포할 때, ITO막의 핀홀(pin hole)이 발생하는 문제점이 있었다. 또한, 액정 주입공정시 중첩 패턴들(5)이 깨어지고 중첩패턴들(5)의 조각이 액정의 표면에 떠있게 되므로 상기 공통전극의 저항이 높아지고 깨어진 조각으로 인한 액정 구동시 구동 불량이 발생하는 문제점이 있었다.However, this method also did not have a proper solution to the misalignment. That is, as shown in FIG. 1, when misalignment occurs when red, green, and blue patterns R, G, and B are formed on the color filter substrate 1, The overlapping patterns of the black matrix 3 and the rectangular patterns R, G, and B on the both sides of the patterns R, G, (5) is formed long. These overlapping patterns 5 have a width of several micrometers and a height of several thousands to several tens of thousands of angstroms so that when an ITO film as a common electrode is applied on the superimposition patterns 5 and the black matrix 3, holes are generated. In addition, during the liquid crystal injection process, the overlapping patterns 5 are broken and the pieces of the overlapping patterns 5 float on the surface of the liquid crystal, so that the resistance of the common electrode is increased and a driving failure occurs during liquid crystal driving due to broken pieces There was a problem.

따라서, 본 발명의 목적은 R,G,B 패턴의 블랙매트릭스와의 미스얼라인으로 인한 중첩패턴들의 발생을 억제하여 중첩패턴들로 인한 칼라필터기판의 신뢰성 저하를 방지할 수 있도록 한 저반사 칼라필터기판의 제조방법을 제공하는데 있다.SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a low-reflection collar which can suppress the occurrence of superposition patterns due to misalignment with the black matrix of R, G, and B patterns, And a method for manufacturing the filter substrate.

도 1(A)는 종래 기술에 의한 블랙 매트릭스의 중첩패턴이 형성된 상태를 나타낸 평면도.Fig. 1 (A) is a plan view showing a state in which a superposition pattern of a black matrix according to the related art is formed.

도 1(B)는 도 1(A)의 A-A선을 따라 절단한 단면도.Fig. 1 (B) is a cross-sectional view taken along the line A-A in Fig. 1 (A). Fig.

도 2(A) 내지 도 2(C)는 본 발명에 의한 저반사 칼라필터기판의 제조방법을 나타낸 평면 공정도.2 (A) to 2 (C) are plan views showing a method of manufacturing a low reflection color filter substrate according to the present invention.

<도면의 주요 부분에 대한 부호의 설명>Description of the Related Art

1 : 칼라필터기판 3 : 블랙 매트릭스 5 : 중첩부분 11: 칼라필터기판 13: 블랙 매트릭스 15: 중첩부분1: color filter substrate 3: black matrix 5: overlapping portion 11: color filter substrate 13: black matrix 15: overlapping portion

이와 같은 목적을 달성하기 위한 본 발명은 정얼라인시 블랙 매트릭스 패턴의 가장자리가 R,G,B 패턴들의 가장자리를 따라 격자 형태로 위치시키고, 또한 노광조건과 현상조건에 따른 언더컷 현상을 이용하여 중첩부분들을 제거하여 R,G,B 패턴들의 표면을 평탄화시킴으로써 칼라필터기판의 신뢰성을 향상시키는 것을 특징으로 한다.In order to achieve the above object, according to the present invention, the edges of a black matrix pattern are aligned in a lattice pattern along the edges of R, G, and B patterns, and underlining is performed using exposure conditions and under- Portions are removed to improve the reliability of the color filter substrate by planarizing the surfaces of the R, G, and B patterns.

이하, 본 발명에 의한 저반사 칼라필터기판의 제조방법을 첨부된 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, a method of manufacturing a low reflection color filter substrate according to the present invention will be described in detail with reference to the accompanying drawings.

도 2(A) 내지 도 2(C)는 본 발명에 의한 저반사 칼라필터기판의 제조방법을 나타낸 평면공정도이다.2 (A) to 2 (C) are plan views illustrating a method for manufacturing a low reflection color filter substrate according to the present invention.

도 2(A)에 도시된 바와 같이, 사진식각 공정을 이용하여 칼라필터기판(11) 위에 사각형상의 적, 녹, 청색 패턴들(R),(G),(B)을 형성한다.As shown in FIG. 2 (A), square red, green, and blue patterns R, G, and B are formed on the color filter substrate 11 using a photolithography process.

도 2(B)에 도시된 바와 같이, 적, 녹, 청색 패턴들(R),(G),(B)을 포함한 칼라필터기판(11)의 전면에 유기탄소 감광막을 도포한 후 적, 녹, 청색 패턴들(R),(G),(B)을 제외한 영역에 유기탄소 감광막의 블랙 매트릭스(13)의 패턴을 형성한다. 이때, 블랙 매트릭스(13)의 패턴은 패턴들(R),(G),(B)의 각 변을 따라 격자형태를 가지며 중첩하게 된다.An organic carbon photosensitive film is coated on the entire surface of the color filter substrate 11 including the red, green and blue patterns R, G and B as shown in FIG. 2 (B) The pattern of the black matrix 13 of the organic carbon photoresist is formed in the regions except for the blue patterns R, G, At this time, the pattern of the black matrix 13 has a lattice shape along the sides of the patterns R, G, and B and overlaps them.

따라서, 얼라인 또는 미스얼라인의 경우에 관계없이 패턴들(R),(G),(B)과 블랙 매트릭스(13)와의 중첩부분(15)이 항상 존재하게 되고, 또한 블랙 매트릭스(13)와 패턴들(R),(G),(B) 사이에 칼라필터기판(11)의 일부 영역이 노출되어 있다.Therefore, the overlapped portions 15 between the patterns R, G, and B and the black matrix 13 are always present irrespective of the case of the alignment or the misalignment, And a part of the color filter substrate 11 is exposed between the patterns R, G,

도 2(C)에 도시된 바와 같이, 노광조건과 현상조건에 따른 패턴의 언더컷(under cut) 현상 발생을 이용하여 중첩부분(15)을 적절한 현상조건에서 용이하게 제거할 수 있다. 따라서, 패턴들(R),(G),(B)은 중첩부분들(15)이 모두 제거된 평탄한 표면을 갖게 되어 평탄화된 패턴들영역(R),(G),(B)을 포함한 블랙 매트릭스(13)의 표면상에 공통전극인 ITO막을 양호한 상태로 형성할 수 있다.The overlapped portion 15 can be easily removed under appropriate developing conditions by utilizing the occurrence of the undercut phenomenon of the pattern according to the exposure condition and the developing condition, as shown in Fig. 2 (C). Thus, the patterns R, G, and B have a flat surface from which all of the overlapping portions 15 have been removed, so that the patterns R, G, and B including the planarized regions R, G, An ITO film, which is a common electrode, can be formed in a good state on the surface of the matrix 13.

이상에서 살펴본 바와 같이, 본 발명은 칼라필터기판 위에 적, 녹, 청색 패턴들(R),(G),(B)을 먼저 형성하고 패턴들(R),(G),(B)의 각 변을 따라 격자 형태로 중첩되는 유기탄소 감광막의 블랙 매트릭스를 형성한 후 패턴들(R),(G),(B)과 블랙 매트릭스와의 중첩부분을 노광조건과 현상조건을 적절히 조정하여 언더컷시켜 제거한다. 따라서, 본 발명은 평탄한 패턴들(R),(G),(B)을 용이하게 형성하여 칼라필터의 신뢰성을 향상시킬 수 있다.(R), (G), and (B) are first formed on the color filter substrate, and the patterns R, G, The black matrix of the organic carbon photoresist layer overlapped in the form of a lattice along the sides is formed, and the overlapping portions of the patterns R, G, and B with the black matrix are undercut by suitably adjusting exposure conditions and development conditions Remove. Therefore, the present invention can easily form the flat patterns R, G, and B to improve the reliability of the color filter.

Claims (3)

칼라필터기판 위에 R,G,B 패턴들을 각각 형성하는 단계와, 상기 R,G,B 패턴들의 가장자리들에 소정 형태로 중첩되도록 상기 칼라필터기판의 전면에 블랙 매트릭스를 위한 감광막의 패턴을 형성하는 단계와, 상기 감광막의 중첩부분을 제거하는 단계를 포함하는 저반사 칼라필터기판의 제조방법.Forming a pattern of a photoresist layer for a black matrix on a front surface of the color filter substrate so as to be superimposed on the edges of the R, G, and B patterns in a predetermined shape; And removing the overlapping portion of the photoresist film. 제 1 항에 있어서, 상기 감광막의 패턴이 상기 R,G,B 패턴들의 가장자리들에 격자형태로 중첩되는 것을 특징으로 하는 저반사 칼라필터기판의 제조방법.The method of claim 1, wherein the pattern of the photoresist layer is superimposed on the edges of the R, G, and B patterns in a lattice pattern. 제 1 항에 있어서, 상기 감광막의 중첩부분이 적절한 현상조건에서 제거되는 것을 특징으로 하는 저반사 칼라필터기판의 제조방법.The method of claim 1, wherein the overlapping portions of the photoresist film are removed under appropriate development conditions.
KR1019960047496A 1996-10-22 1996-10-22 Method for manufacturing low reflective color filter substrate KR100400163B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960047496A KR100400163B1 (en) 1996-10-22 1996-10-22 Method for manufacturing low reflective color filter substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960047496A KR100400163B1 (en) 1996-10-22 1996-10-22 Method for manufacturing low reflective color filter substrate

Publications (2)

Publication Number Publication Date
KR19980028440A KR19980028440A (en) 1998-07-15
KR100400163B1 true KR100400163B1 (en) 2003-11-14

Family

ID=37422317

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960047496A KR100400163B1 (en) 1996-10-22 1996-10-22 Method for manufacturing low reflective color filter substrate

Country Status (1)

Country Link
KR (1) KR100400163B1 (en)

Also Published As

Publication number Publication date
KR19980028440A (en) 1998-07-15

Similar Documents

Publication Publication Date Title
KR101064189B1 (en) Color filter substrate, display panel and method of manufacturing the same
US6734931B2 (en) Color filter substrate having identification mark formed in the black matrix
KR100262227B1 (en) Lcd device
US7826012B2 (en) Color filter substrate, liquid crystal display apparatus including color filter substrate, and method of manufacturing color filter substrate
KR100550185B1 (en) Color display device
USRE44821E1 (en) Color filter, method of fabricating the same and liquid-crystal display device
US5473453A (en) Liquid crystal display with opaque film formed by exposure through microlens
US20040001170A1 (en) Liquid crystal display device having array substrate of color filter on thin film transistor structure and manufacturing method thereof
KR101383703B1 (en) Thin film transistor array panel and manufacturung method thereof
JPH11212075A (en) Manufacture of liquid crystal display device
US6853408B2 (en) CF on TFT liquid crystal display having reduced dot defects
JP2991304B2 (en) Liquid crystal display device and method of manufacturing the same
US20050057708A1 (en) Color filter structure
KR19990006906A (en) LCD and its manufacturing method
KR100626347B1 (en) Method of manufacturing a TFT LCD pannel
KR100400163B1 (en) Method for manufacturing low reflective color filter substrate
JP2000162643A (en) Liquid crystal display device and its manufacture
KR100790355B1 (en) Color Filter Panel for Liquid Crystal Display Device and Method for Manufacturing the same
JP2000098128A (en) Color filter
KR101089097B1 (en) Color filter substrate and liquid crystal display using the same
US6704076B2 (en) Method for fabricating a liquid crystal display device
JP2000029069A (en) Liquid crystal display device and its manufacture
JP2000267132A (en) Electrode substrate and liquid crystal display device, and manufacture of electrode substrate
JP2000137242A (en) Liquid crystal display device and production therefor
KR101017205B1 (en) Color Filter On Thin Film Transistor Array Substrate And Method For Fabricating The Same

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20070827

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee