KR20020054869A - Liquid crystal display and method for manufacturing the same - Google Patents

Liquid crystal display and method for manufacturing the same Download PDF

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Publication number
KR20020054869A
KR20020054869A KR1020000084109A KR20000084109A KR20020054869A KR 20020054869 A KR20020054869 A KR 20020054869A KR 1020000084109 A KR1020000084109 A KR 1020000084109A KR 20000084109 A KR20000084109 A KR 20000084109A KR 20020054869 A KR20020054869 A KR 20020054869A
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South Korea
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liquid crystal
substrate
crystal display
seal
column spacer
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KR1020000084109A
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Korean (ko)
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KR100731035B1 (en
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강동호
김진호
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구본준, 론 위라하디락사
엘지.필립스 엘시디 주식회사
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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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • 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 
    • G02F1/0102—Constructional details, not otherwise provided for in this subclass
    • G02F1/0107—Gaskets, spacers or sealing of cells; Filling and closing of cells
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13398—Spacer materials; Spacer properties

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

Abstract

PURPOSE: A liquid crystal display and a method of fabricating the liquid crystal display are provided to distribute column spacers in various distribution densities for resolving the cell gap problems due to the operation at a high temperature, impossibility of movement of substrates when joining the substrates, or the strains due to the external pressing, thereby improving the reliability of the liquid crystal display and stabilizing a fabrication process. CONSTITUTION: A liquid crystal display includes the first and second substrates having an active area(301) and a seal area(302), a sealant formed at the seal area of the first substrate, and column spacers(205) distributed on the second substrate for serving as spacers for keeping a cell gap while restraining the reaction between the seal and liquid crystal. The distribution density of the column spacers in the active area is higher than the distribution density of the column spacers in the seal area. The column spacers are made of a black resin or a semitransparent resin.

Description

액정표시장치 및 그 제조방법{Liquid crystal display and method for manufacturing the same}Liquid crystal display and method for manufacturing the same

본 발명은 디스플레이 장치에 관한 것으로 특히, 액정표시장치 및 그 제조방법에 관한 것이다.The present invention relates to a display device, and more particularly, to a liquid crystal display device and a manufacturing method thereof.

21세기 고도 정보화 사회에서는 소비 패턴의 다양화가 추구되면서 저소비전력, 경량박형화, 고화질 구현이 가능하여 공간 활용을 극대화하고 휴대가 용이한디스플레이가 필요하게 되었다.In the 21st century high information society, as the consumption pattern is diversified, low power consumption, light weight and high quality can be realized, maximizing space utilization and a portable display.

TFT-LCD는 이러한 조건을 대부분 만족시킬 수 있는 디스플레이로서 대형 분야의 PDP(Plasma Display Panel)을 포함한 평판 디스플레이의 선두주자로 기존의 음극선관(CRT)을 대체할 핵심 소자가 될 것으로 예상된다.TFT-LCD is a display that can satisfy most of these conditions, and is expected to become a key device to replace the existing cathode ray tube (CRT) as a leader in flat panel displays including plasma display panels (PDPs) in large fields.

TFT-LCD는 CRT 대비하여 경량박형, 저소비전력, 고정세 구형 등 휴대성이 용이하여 휴대용 디스플레이 및 인체에 유해한 전자파 발생이 없고 첨단 인텔리전트 빌딩에서 24시간 사용 가능한 21세기형 첨단 디스플레이지만, 높은 제조원가, 좁은 시야각, 낮은 휘도 및 대형화에 상대적인 불리 등 아직까지 보완해야할 기술분야가 남아 있지만 이에 대한 기술개발도 상당한 수준으로 진척되고 있다.TFT-LCD is a 21st century high-tech display that can be used 24 hours in a high-tech intelligent building without generating harmful electromagnetic waves. Although there are still technical fields to be supplemented, such as narrow viewing angles, low luminance, and relative disadvantages of enlargement, technology development for them is progressing to a considerable level.

이하에서 종래기술에 따른 액정표시장치를 첨부된 도면을 참조하여 설명하면 다음과 같다.Hereinafter, a liquid crystal display according to the related art will be described with reference to the accompanying drawings.

도 1은 종래기술에 따른 액정표시장치의 구조단면도이며, 도 2는 종래기술에 따른 액정표시장치의 구조평면도이다.1 is a structural cross-sectional view of a liquid crystal display device according to the prior art, and FIG. 2 is a structural plan view of the liquid crystal display device according to the prior art.

도 1 에 도시된 바와 같이, 두 장의 절연기판(101a, 101b)을 대향시켜 그 사이에 액정을 봉입한 것으로, 하판에는 절연기판(101a) 상에 게이트 절연막(102)이 형성되어 있으며, 상기 게이트 절연막(102) 상에 데이터라인(103)들이 패터닝되어 있다. 또 상기 데이터라인(103)을 포함한 기판 전면위로 실리콘 질화물 재질의 보호막(104)이 적층되어 있고, 상기 보호막(104) 상에 일정 간격으로 ITO 재질의 화소전극(105)이 형성되어 있다.As shown in FIG. 1, two insulating substrates 101a and 101b are opposed to each other, and a liquid crystal is enclosed therebetween, and a lower insulating plate 102 is formed on the insulating substrate 101a. The data lines 103 are patterned on the insulating layer 102. Further, a silicon nitride protective film 104 is stacked on the entire surface of the substrate including the data line 103, and a pixel electrode 105 made of ITO is formed on the protective film 104 at regular intervals.

상판에는 절연기판(101b)상에 화소전극을 제외한 영역으로의 빛의 투과를 막기 위한 블랙매트릭스층(106)이 형성되어 있고, 상기 블랙매트릭스층(106) 사이의 공간에는 색 표현을 구현하기 위한 R, G, B의 칼라필터층(107)이 형성되어 있다.A black matrix layer 106 is formed on the insulating substrate 101b to prevent light from being transmitted to regions other than the pixel electrode, and a color matrix is formed in the space between the black matrix layers 106. The color filter layers 107 of R, G, and B are formed.

그리고 상기 칼라필터층(107)을 포함한 기판 전면위로 유기절연 재질의 평탄화막(Over coat)(108)을 형성하는 것도 가능하며, 상기 평탄화막(108) 상에는 블랙 레진(Black Resin)계의 컬럼스페이서(Column Spacer)(109)가 기판 전체에 일정 간격으로 패터닝되어 있다. 상기 컬럼스페이서(109)를 포함한 기판 전면위로 ITO 재질의 공통전극(110)이 형성되어 있다. 여기서, 상기 컬럼스페이서는 셀 갭의 유지하는 기존의 스페이서 역할을 한다.In addition, an organic insulating material overcoat 108 may be formed on the entire surface of the substrate including the color filter layer 107, and a black resin column spacer may be formed on the planarization film 108. Column Spacer) 109 is patterned at regular intervals throughout the substrate. A common electrode 110 made of ITO is formed on the entire surface of the substrate including the column spacer 109. Here, the column spacer serves as a conventional spacer for maintaining the cell gap.

한편, 도 2에 도시한 바와 같이, 상기와 같은 종래 기술에 따른 액정표시장치 상판의 평면도를 보면, 상기 컬럼 스페이서(109)의 분포밀도가 액티브 영역(111)과 씨일 영역(112)을 포함한 기판 전면에 걸쳐 균일한 밀도를 갖는다.On the other hand, as shown in Figure 2, when the top view of the liquid crystal display device according to the prior art as described above, the distribution density of the column spacer 109 is a substrate including the active region 111 and the seal region 112 It has a uniform density over the entire surface.

그러나 상기와 같은 종래 액정표시장치 및 그 제조방법은 다음과 같은 문제점이 있었다.However, the conventional liquid crystal display device and its manufacturing method have the following problems.

칼라필터 기판상에 형성되어 있는 컬럼스페이서(Column Spacer)가 기판 전체에 1∼3 화소당 1개 정도의 균일한 밀도로 형성되어 있기 때문에 분포 밀도에 따라 상하판 합착시 기판이 움직이지 않는 현상 또는 외부 눌림에 따른 얼룩, 고온 동작시 발생하는 셀갭(Cell gap)성 얼룩 등의 단점이 있었다.Since the column spacer formed on the color filter substrate is formed at a uniform density of about 1 to 3 pixels throughout the substrate, the substrate does not move when the upper and lower plates are bonded depending on the distribution density. There are disadvantages such as stains caused by external pressing and cell gap stains generated during high temperature operation.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출한 것으로, 컬럼스페이서 패턴의 기판 내 분포 밀도를 다르게 형성시킴으로써 제품의 신뢰성 및 공정 안정화를 기할 수 있는 액정표시장치 및 그 제조방법을 제공하는데 목적이 있다.The present invention has been made to solve the above problems, and an object of the present invention is to provide a liquid crystal display device and a method for manufacturing the same, which can stabilize the reliability and process of a product by differently forming a distribution density in a substrate of a column spacer pattern. .

도 1은 종래 기술에 따른 액정표시장치의 구조 단면도.1 is a cross-sectional view of a structure of a liquid crystal display device according to the prior art.

도 2는 종래 기술에 따른 액정표시장치의 상판의 구조 평면도.2 is a plan view of a top plate of a liquid crystal display according to the related art.

도 3은 본 발명에 따른 액정표시장치의 상판의 구조 평면도.3 is a plan view of a top plate of a liquid crystal display according to the present invention;

도 4a 내지 4c는 본 발명에 따른 액정표시장치의 제조방법을 설명하기 위한 공정 단면도.4A to 4C are cross-sectional views illustrating a method of manufacturing a liquid crystal display device according to the present invention.

도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings

205 : 컬럼 스페이서(Column Spacer)301 : 액티브 영역205: column spacer 301: active region

302 : 씨일 영역302: seal area

상기의 목적을 달성하기 위한 본 발명의 액정표시장치는 액티브 영역 및 씨일영역으로 정의된 제 1 기판 및 제 2 기판과, 상기 제 1 기판상의 씨일 영역에 형성된 씨일재와, 상기 제 2 기판상에서 액티브 영역과 상기 씨일 영역의 분포밀도가 다르게 형성된 컬럼 스페이서 패턴을 포함하여 이루어지며 그 제조방법은 액티브 영역 및 씨일 영역으로 정의된 제 1 기판 및 제 2 기판을 준비하는 단계와, 상기 제 2 기판상에 블랙매트릭스층과 칼라필터층을 형성하는 단계와, 상기 칼라필터층을 포함한 기판 전면 상에 평탄화막을 형성하는 단계와, 상기 평탄화막상에 액티브 영역과 씨일 영역의 분포밀도가 다르게 컬럼 스페이서 패턴을 형성하는 단계를 포함하여 이루어지는 것을 특징으로 한다.The liquid crystal display of the present invention for achieving the above object is a first substrate and a second substrate defined by an active region and a seal region, a seal material formed in the seal region on the first substrate, and active on the second substrate And a column spacer pattern having different distribution densities of the region and the seal region, the manufacturing method comprising the steps of: preparing a first substrate and a second substrate defined by an active region and a seal region; Forming a black matrix layer and a color filter layer, forming a planarization film on the entire surface of the substrate including the color filter layer, and forming a column spacer pattern having different distribution densities of active and seal regions on the planarization film. It is characterized by comprising.

상기 평탄화막상에 형성되는 컬럼 스페이서(Column Spacer)는 셀 갭(Cell Gap)을 유지하는 기존의 스페이서의 역할을 수행하는 한편 씨일(Seal)재와 액정의 반응을 억제하는 역할도 수행하며, 게이트라인, 데이터라인, 박막트랜지스터 및 박막트랜지스터로 정의되는 액티브 영역에 상응하는 부위에는 씨일 영역보다 높은 분포 밀도의 컬럼스페이서 패턴을 형성한다.The column spacer formed on the planarization layer serves as a conventional spacer that maintains a cell gap, and also serves to suppress a reaction between a seal material and a liquid crystal, and a gate line. A column spacer pattern having a higher distribution density than a seal region is formed in a portion corresponding to an active region defined as a data line, a thin film transistor, and a thin film transistor.

이하, 도면을 참조하여 본 발명에 따른 액정표시장치 및 그 제조방법을 상세히 설명한다.Hereinafter, a liquid crystal display and a manufacturing method thereof according to the present invention will be described in detail with reference to the drawings.

한편, 본 발명에 따른 액정표시장치는 칼라필터층이 형성되는 상판에 그 특징이 있으므로 박막트랜지스터가 형성되는 하판에 대한 상세한 설명은 생략한다.On the other hand, since the liquid crystal display according to the present invention has its characteristics on the upper plate on which the color filter layer is formed, a detailed description of the lower plate on which the thin film transistor is formed is omitted.

도 3은 본 발명에 따른 액정표시장치의 상판의 구조 평면도로서, 액티브 영역(301)과 씨일 영역(302)로 구분되며 상기 액티브 영역의 컬럼 스페이서(205) 분포 밀도는 씨일 영역보다 크다.3 is a plan view of a top plate of a liquid crystal display according to the present invention, which is divided into an active region 301 and a seal region 302, and a distribution density of the column spacer 205 in the active region is greater than that of the seal region.

도 4a 내지 4c는 본 발명에 따른 액정표시장치의 제조방법을 설명하기 위한 공정단면도이다.4A to 4C are cross-sectional views illustrating a method of manufacturing a liquid crystal display device according to the present invention.

도 4a에 도시된 바와 같이, 절연기판(201) 상에 게이트라인, 데이터라인 및 박막트랜지스터로의 빛의 투과를 막기 위한 블랙매트릭스층(202)을 형성한다. 이어, 상기 블랙매트릭스층(202) 사이의 공간에 색 표현을 구현하기 위한 R, G, B의 칼라필터층(203)을 형성한다.As shown in FIG. 4A, a black matrix layer 202 is formed on the insulating substrate 201 to prevent light transmission to the gate line, the data line, and the thin film transistor. Subsequently, R, G, and B color filter layers 203 are formed in the space between the black matrix layers 202.

도 4b에 도시된 바와 같이, 상기 칼라필터층(203)을 포함한 기판 전면 상에 평탄화막(204)을 형성한다. 상기 평탄화막(204)은 칼라필터층의 보호 및 기판의 평탄화 역할을 수행하나, 공정상 생략하는 것도 가능하다.As shown in FIG. 4B, the planarization film 204 is formed on the entire surface of the substrate including the color filter layer 203. The planarization layer 204 serves to protect the color filter layer and planarize the substrate, but may be omitted in the process.

도 4c에 도시된 바와 같이 상기 평탄화막(204) 상에 블랙 레진(Black Resin)계 또는 반투명의 레진(Resin) 물질을 적층한 다음, 액티브영역과 씨일 영역에 분포 밀도가 다르게 컬럼 스페이서 패턴(205)을 형성한다. 여기서, 상기 컬럼 스페이서 재료는 상기 평탄화막의 재료와 동일한 물질을 사용하는 것도 가능하다. 이어, 상기 평탄화막을 포함한 기판 전면 상에 ITO 재질의 투명도전막을 증착하여 공통전극(206)을 형성한다.As shown in FIG. 4C, a black resin or translucent resin is stacked on the planarization layer 204, and then column spacer patterns 205 having different distribution densities in the active region and the seal region. ). Here, the column spacer material may use the same material as that of the planarization film. Next, the common electrode 206 is formed by depositing an ITO transparent conductive film on the entire surface of the substrate including the planarization film.

이후, 도면에 도시하지 않았지만, 상기 칼라필터층이 형성된 기판과 그에 대향되는 기판을 합착 후 액정을 주입하면 본 발명에 따른 액정표시장치의 제조공정은 완료된다.Subsequently, although not shown in the drawings, a liquid crystal is injected after bonding the substrate on which the color filter layer is formed and the substrate opposite thereto to complete the manufacturing process of the liquid crystal display according to the present invention.

이상 상술한 바와 같이, 본 발명의 액정표시장치 및 그 제조방법은 다음과 같은 효과가 있다.As described above, the liquid crystal display of the present invention and its manufacturing method have the following effects.

칼라필터기판상에 있어서, 액티브영역 및 씨일 영역에 상응하는 부위에 형성되는 컬럼 스페이서 패턴의 분포 밀도를 다르게 함으로써 상하판 합착시 기판이 움직이지 않거나 또는 외부 압력에 의한 눌림 얼룩 등의 단점을 방지하는 효과를 얻을 수 있다.On the color filter substrate, by varying the distribution density of the column spacer patterns formed in the areas corresponding to the active region and the seal region, the substrate is prevented from moving when the upper and lower plates are bonded or the pressing stains caused by external pressure are prevented. The effect can be obtained.

Claims (4)

액티브 영역 및 씨일 영역으로 정의된 제 1 기판 및 제 2 기판;A first substrate and a second substrate defined by an active region and a seal region; 상기 제 1 기판상의 씨일 영역에 형성된 씨일재;A seal material formed in a seal region on the first substrate; 상기 제 2 기판상에서 액티브 영역이 상기 씨일 영역보다 분포밀도가 크게 형성된 컬럼 스페이서 패턴을 포함하여 이루어지는 것을 특징으로 하는 액정표시장치.And a column spacer pattern having a greater distribution density than the seal region on the second substrate. 제 1 항에 있어서, 상기 컬럼 스페이서 패턴은 블랙 레진(Black Resin)계 또는 반투명의 레진(Resin)계의 물질인 것을 특징으로 하는 액정표시장치.The liquid crystal display device of claim 1, wherein the column spacer pattern is made of a black resin or a translucent resin. 액티브 영역 및 씨일 영역으로 정의된 제 1 기판 및 제 2 기판을 준비하는 단계;Preparing a first substrate and a second substrate defined by an active region and a seal region; 상기 제 2 기판상에 블랙매트릭스층과 칼라필터층을 형성하는 단계;Forming a black matrix layer and a color filter layer on the second substrate; 상기 칼라필터층을 포함한 기판 전면 상에 평탄화막을 형성하는 단계;Forming a planarization film on an entire surface of the substrate including the color filter layer; 상기 평탄화막상에 액티브 영역이 상기 씨일 영역보다 분포밀도가 크도록 컬럼 스페이서 패턴을 형성하는 단계를 포함하여 이루어지는 것을 특징으로 하는 액정표시장치 제조방법.And forming a column spacer pattern on the planarization layer such that an active region has a larger distribution density than the seal region. 제 3 항에 있어서, 상기 컬럼 스페이서 패턴은 블랙 레진(Black Resin)계 또는 반투명의 레진(Resin)계의 물질인 것을 특징으로 하는 액정표시장치 제조방법.The method of claim 3, wherein the column spacer pattern is made of a black resin or a translucent resin.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100437594B1 (en) * 2001-03-31 2004-06-26 비오이 하이디스 테크놀로지 주식회사 Liquid crystal display
CN104765202A (en) * 2015-04-24 2015-07-08 合肥京东方光电科技有限公司 Liquid crystal display panel, manufacturing method for liquid crystal display panel and liquid crystal display device
KR20200068271A (en) * 2018-12-05 2020-06-15 엘지디스플레이 주식회사 Liquid crystal panel

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JPH10153785A (en) * 1996-09-26 1998-06-09 Toshiba Corp Liquid crystal display device
KR20000071852A (en) * 1999-04-30 2000-11-25 모리시타 요이찌 Liquid crystal display device and method of manufacturing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100437594B1 (en) * 2001-03-31 2004-06-26 비오이 하이디스 테크놀로지 주식회사 Liquid crystal display
CN104765202A (en) * 2015-04-24 2015-07-08 合肥京东方光电科技有限公司 Liquid crystal display panel, manufacturing method for liquid crystal display panel and liquid crystal display device
WO2016169180A1 (en) * 2015-04-24 2016-10-27 京东方科技集团股份有限公司 Liquid crystal display panel and manufacturing method therefor, and liquid crystal display device
US10503026B2 (en) 2015-04-24 2019-12-10 Boe Technology Group Co., Ltd. Liquid crystal display panel and method for manufacturing the same and liquid crystal display apparatus
KR20200068271A (en) * 2018-12-05 2020-06-15 엘지디스플레이 주식회사 Liquid crystal panel

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