KR0179112B1 - Structure of liquid crystal display element - Google Patents
Structure of liquid crystal display element Download PDFInfo
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- KR0179112B1 KR0179112B1 KR1019950048249A KR19950048249A KR0179112B1 KR 0179112 B1 KR0179112 B1 KR 0179112B1 KR 1019950048249 A KR1019950048249 A KR 1019950048249A KR 19950048249 A KR19950048249 A KR 19950048249A KR 0179112 B1 KR0179112 B1 KR 0179112B1
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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
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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
- G02F1/136—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
- G02F1/136286—Wiring, e.g. gate line, drain line
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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
- G02F1/136—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
- G02F1/136286—Wiring, e.g. gate line, drain line
- G02F1/136295—Materials; Compositions; Manufacture processes
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
본 발명은 액정표시소자에 관한 것으로, 기판의 스트레스로 인한 신호선의 오픈(Open)을 방지하는데 적당한 액정표시소자의 구조를 제공하기 위한 것이다.The present invention relates to a liquid crystal display device, and to provide a structure of a liquid crystal display device suitable for preventing the opening of the signal line due to the stress of the substrate.
이를 위한 본 발명의 액정표시소자의 구조는 액정표시소자에 있어서, 하판(Bottom Plate)뒷면의 외곽부위에 역 스트레스를 가하기 위해 스트레스 방지용 금속을 증착하여 이루어짐을 특징으로 한다.The structure of the liquid crystal display device of the present invention for this purpose is characterized in that the liquid crystal display device is formed by depositing a metal for preventing stress in order to apply a reverse stress to the outer portion of the back of the bottom plate (Bottom Plate).
Description
제1도는 일반적인 액정표시소자의 레이아웃도.1 is a layout diagram of a general liquid crystal display device.
제2도는 본 발명에 따른 액정표시소자의 구조.2 is a structure of a liquid crystal display device according to the present invention.
본 발명은 액정표시소자에 관한 것으로 특히, 기판의 스트레스에 의한 신호선의 오픈(Open)을 방지하는데 적당한 액정표시소자의 구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a structure of a liquid crystal display device suitable for preventing the opening of a signal line due to stress of a substrate.
일반적으로 액정표시소자는 두장의 유리기판을 대향(對向)시켜 그 사이에 액정을 봉입한 것으로, 하측의 유리기판에는 메트릭스상에 배치된 데이터선과 주사선 및 그들의 교차점에 배치된 TFT와 화소전극이 배치되고, 상측의 유리기판 위에는 각 화소전극에 대응하는 R(적), G(녹), B(청)의 칼라필터 및 공통전극이 배치되며 두 유리기판 양쪽면에는 가시광선(자연광)을 선편광 시켜주는 편광판이 부착되어 있다.In general, a liquid crystal display device has two glass substrates facing each other, and a liquid crystal is enclosed therebetween. In the lower glass substrate, data lines and scanning lines arranged on the matrix, and TFTs and pixel electrodes arranged at intersections thereof are arranged. On the upper glass substrate, color filters of R (red), G (green), and B (blue) and common electrodes corresponding to each pixel electrode are disposed, and linearly polarized visible light (natural light) is disposed on both glass substrates. A polarizing plate is attached.
여기서, 하판의 구조를 좀 더 자세히 설명하면 유리 또는 석영 등의 투명기판에 일정간격을 갖고 일방향으로 복수개의 게이트 라인이 금속으로 형성되고, 상기 게이트 라인과 수직방향으로 일정간격을 갖고 복수개의 데이터 라인에 형성된다.Here, when the structure of the lower plate is described in more detail, a plurality of gate lines are formed of a metal in one direction with a predetermined interval on a transparent substrate such as glass or quartz, and a plurality of data lines with a predetermined interval in a vertical direction with the gate line. Is formed.
그리고, 각 화소영역에는 화소전극이 형성되고, 상기 게이트 라인을 게이트 전극으로 하고, 상기 데이터 라인을 소오스 전극으로 하여 게이트 라인의 신호에 따라 상기 데이터 라인의 데이터 신호를 화소전극에 인가하는 박막 트랜지스터가 각 화소영역 마다 형성된다.A pixel electrode is formed in each pixel region, and the thin film transistor is configured to apply the data signal of the data line to the pixel electrode according to the signal of the gate line using the gate line as the gate electrode and the data line as the source electrode. It is formed for each pixel area.
제1도는 일반적인 액정표시소자의 레이아웃도로서, 종래 액정표시소자는 제1도A부분의 단차부위에서 신호선의 오픈(Open)이 발생한다.FIG. 1 is a layout diagram of a general liquid crystal display device. In the conventional liquid crystal display device, the signal line is open at a stepped portion of FIG.
이는 현재 신호선(데이터 라인)의 패터닝에 사용되는 것으로서, 크롬(Cr)을 사용하는데 상기 크롬은 인장력(Tensile)을 가지고 있으므로 TFT하판제작 공정시에 발생하는 팽창 및 수축에 의해 유리기판의 휘어짐 현상이 나타난다.It is currently used for patterning signal lines (data lines), and chromium (Cr) is used. Since chromium has a tensile force, bending of the glass substrate is caused by expansion and contraction occurring during the TFT lower plate manufacturing process. appear.
따라서 종래 액정표시소자는 TFT를 구성하는 면에만 각종 물질이 증착되고, 반대편(유리기판의 뒷면)에는 아무런 물질도 증착하지 않기 때문에 기판의 스트레스로 인해 신호선의 오픈(Open)이 발생하여 수율이 저하되는 문제점이 있었다.Therefore, in the conventional liquid crystal display device, various materials are deposited only on the side of the TFT, and since no material is deposited on the opposite side (the back side of the glass substrate), signal lines open due to the stress of the substrate, resulting in a decrease in yield. There was a problem.
본 발명은 상기의 문제점을 해결하기 위해 안출한 것으로, TFT 하판제작 공정시 발생하는 스트레스로 인한 신호선의 오픈(Open)을 방지하는데 적당한 액정표시소자의 구조를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and an object of the present invention is to provide a structure of a liquid crystal display device suitable for preventing the opening of signal lines due to the stress generated during the TFT lower plate manufacturing process.
상기의 목적을 달성하기 위한 본 발명의 액정표시소자는 액정표시소자에 있어서, 하판(Bottom Plate)뒷면의 외곽부위에 역 스트레스를 가하기 위해 스트레스 방지용 금속을 증착하여 이루어짐을 특징으로 한다.The liquid crystal display device of the present invention for achieving the above object is characterized in that the liquid crystal display device, characterized in that made by depositing a metal for preventing stress in order to apply a reverse stress on the outer portion of the back of the bottom plate (Bottom Plate).
이하, 첨부도면을 참조하여 본 발명의 액정표시소자의 구조를 설명하면 다음과 같다. 제2도는 본 발명의 액정표시소자의 구조를 나타낸 도면이다.Hereinafter, the structure of the liquid crystal display device of the present invention will be described with reference to the accompanying drawings. 2 is a view showing the structure of the liquid crystal display device of the present invention.
본 발명의 액정표시소자의 구조는 제2도에서와 같이, TFT 하판뒷면의 외곽부분에 역 스트레스를 가하기 위해 데이터 라인을 패터닝한 동일물질이 증착된 구조를 갖는다.The structure of the liquid crystal display device of the present invention has a structure in which the same material is patterned by patterning the data line in order to apply reverse stress to the outer portion of the rear surface of the TFT lower plate as shown in FIG.
즉, TFT 하판뒷면의 외곽부분에 데이터 라인을 패터닝한 동일한 물질(즉, 데이터 라인을 패터닝한 물질과 동일한 인장력을 갖는 물질(크롬))을 증착한 후, 전면에 ITO를 증착한다.That is, after depositing the same material (that is, a material having the same tensile force (chromium) as the material patterning the data line) patterned on the outer portion of the back side of the TFT lower plate, ITO is deposited on the front surface.
상기 ITO는 이후 식각공정시 소오스/드레인 전극을 보호하기 위한 것이다.The ITO is intended to protect the source / drain electrodes during the subsequent etching process.
이때 상기 ITO는 유리기판의 투과도에는 아무런 영향을 미치지 않는다.At this time, the ITO has no effect on the transmittance of the glass substrate.
왜냐하면 ITO 공정시 식각되기 때문이다.This is because it is etched during the ITO process.
또한 TFT 하판뒷면의 외곽부분에 크롬을 증착하기 위해 포토공정이 추가되지만 정교한 마스크 패턴을 요하지 않으므로 제조가 간편하다.In addition, a photo process is added to deposit chromium on the backside of the TFT bottom plate, but it is easy to manufacture because it does not require an elaborate mask pattern.
다시 말해서 TFT 하판뒷면의 외곽부분에 데이터 라인을 패터닝한 물질과 동일한 물질을 증착하여 역 스트레스를 가하므로, 스트레스가 서로 상쇄되어 유리기판의 휘어짐을 방지한다.In other words, since the same material as that of the data line patterned material is deposited on the outer side of the bottom surface of the TFT, the reverse stress is applied, and the stresses cancel each other to prevent the glass substrate from bending.
이상 상술한 바와 같이 본 발명의 액정표시소자의 구조는 TFT 하판뒷면에도 데이터 라인과 동일한 물질을 증착하므로, 기판 스트레스에 의한 신호선의 오픈(Open)을 방지하여 수율을 향상시키는 효과가 있다.As described above, since the structure of the liquid crystal display device of the present invention deposits the same material as the data line on the rear surface of the TFT, the yield of the signal line is prevented from being opened due to the stress of the substrate.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950048249A KR0179112B1 (en) | 1995-12-11 | 1995-12-11 | Structure of liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950048249A KR0179112B1 (en) | 1995-12-11 | 1995-12-11 | Structure of liquid crystal display element |
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| Publication Number | Publication Date |
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| KR970048831A KR970048831A (en) | 1997-07-29 |
| KR0179112B1 true KR0179112B1 (en) | 1999-05-01 |
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| KR1019950048249A KR0179112B1 (en) | 1995-12-11 | 1995-12-11 | Structure of liquid crystal display element |
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