KR950004384B1 - Manufacturing method of liquid crystal cell - Google Patents
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- KR950004384B1 KR950004384B1 KR1019920018822A KR920018822A KR950004384B1 KR 950004384 B1 KR950004384 B1 KR 950004384B1 KR 1019920018822 A KR1019920018822 A KR 1019920018822A KR 920018822 A KR920018822 A KR 920018822A KR 950004384 B1 KR950004384 B1 KR 950004384B1
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- G—PHYSICS
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- 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
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Abstract
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Description
본 발명은 액정표시 장치용 액정셀의 제조방법, 특히 박막 액정패턴을 유리기판 위에 인쇄하는 방식을 채택한 액정셀의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a liquid crystal cell for a liquid crystal display device, particularly a method for manufacturing a liquid crystal cell employing a method of printing a thin film liquid crystal pattern on a glass substrate.
최근 OA기기나 휴대용 소형 TV등의 보급에 따라 이제까지의 전자디스플레이 장치로 브라운관(CRT) 대신에 액정표시장치(LCD), 일렉트로 일루미너센서(EL)소자, 플라즈마 디스플레이 패널(PDP), 형광 표시관(VFD)등의 연구가 활발이 추진되고 일부는 실용학되고 있다.In recent years, with the spread of OA devices and portable small TVs, LCD displays, electroluminescence sensor (EL) devices, plasma display panels (PDP), and fluorescent display tubes have been replaced by CRTs. Research such as (VFD) has been actively promoted, and some have been put into practical use.
그중에서도 액정표시 장치는 극도로 경량으로 박형, 저가, 저소비 전력구동으로 집적회로와의 정합성이 좋은 등의 특징을 가져 랩톱 컴퓨터(Lap Top Computer)나 포켓 컴퓨터(Pocket Computer)의 표시장치외에 차량 적재용 칼라 TV용 화상표시장치로서 그 용도를 급속하게 확대하고 있다.Among them, the liquid crystal display is extremely lightweight, thin, inexpensive, and low power consumption, so that it can be easily matched with integrated circuits. Therefore, the liquid crystal display device can be used for loading a vehicle in addition to a display device of a laptop or pocket computer. Its use as an image display device for color TV is rapidly expanding.
이러한 표시장치용 LCD모듈의 예는 각종문헌에 공지되어 있다. 그중에서 1990. 12. 11일자 출원인 실용신안등록출원 제90-19463호를 예를들어 LCD모듈의 구성을 살펴본다.Examples of such LCD modules for display devices are known in various documents. The utility model registration application No. 90-19463 filed on December 11, 1990, for example, looks at the configuration of the LCD module.
상기한 LCD모듈은 액정표시소자와, 액정표시소자를 구동하기 위한 각종 전자부품이 장착된 하부기판과, 상기 액정표시소자와 하부기판을 상호 전기적으로 연결하기 위한 제브라(zebra) 콘넥터와, 나사결합 수단에 의해 상부 하부기판에 고정되는 상기 액정표시소자를 보호하기 위한 케이싱으로 구성된다.The LCD module includes a liquid crystal display device, a lower substrate on which various electronic components for driving the liquid crystal display device are mounted, a zebra connector for electrically connecting the liquid crystal display device and the lower substrate to each other, and screw coupling. And a casing for protecting the liquid crystal display element fixed to the upper lower substrate by means.
상기와 같은 LCD모듈의 액정표시소자로서는 상호 대향되는 면에 소정패턴과 전극과 배향막이 적층된 전면패널 및 배면패널을 상호 접합하여 액정이 주입되는 폐쇄공간을 힝성하는 실링재를 구비하여서 이루어진 액정표시장치로서, 상기 전극이 복수개의 분할전극으로 분할되어 각각의 전원과 연결되어 있고, 상기 분할전극의 상면에는 서로 다른 색의 칼라필터층이 형성된 것을 특징으로 하는 액정표시장치가 1990.12. 11자출원된 한국 실용신안등록출원 90-19540호에 개시되어 있다.As the liquid crystal display device of the LCD module as described above, a liquid crystal display device comprising a sealing material which forms a closed space into which liquid crystal is injected by mutually bonding a predetermined pattern, a front panel and a back panel on which electrodes and an alignment layer are stacked on opposite surfaces. The liquid crystal display device of claim 1, wherein the electrode is divided into a plurality of split electrodes and is connected to a respective power source, and color filter layers having different colors are formed on an upper surface of the split electrodes. It is disclosed in Korean Utility Model Registration Application No. 90-19540 filed on the 11th.
또한 상기와 유사한 액정표시소자가 1989.12.28 출원된 실용 89-20104호 및 1989.12.23 출원된 실용89-19803호 등에 출원되어 있다.Also, a liquid crystal display device similar to the above is disclosed in Practical 89-20104 filed on December 28, 1989 and Practical 89-19803 filed on December 23, 1989.
또한 이러한 액정표시소자의 제조방법으로서 1990.8.18일자 특허 출원 90-12727흐에는 상·하부 유기기판상에 감광성 수지를 이용하여 ITO전극을 증착하는 전극 형성단계와, 수백 내지 수천미크론으로 균일하게 배향막을 경화시키는 배향막 형성단계, 액정 주입구 액정의 유실을 방지토록 하기 위해 봉지제를 이용하여 액정 주입구를 봉지하는 시일단계를 거쳐 완성된 액정 판넬의 상부 유리기판상에 입사광의 빛을 편광 제어토록 하기 위한 편광 필름을 코팅하는 편광판 형성단계로 이루어지며, 상기 편광판 상에 실리큰 용액을 일정한 두께로 도포후 소성건조시키는 요철화된 실리큰 수지층 형성단계를 통하여 제조되는 것을 특징으로하는 액정 표시소자의 제조방법이 개시되어 있다.In addition, as a manufacturing method of such a liquid crystal display device, a patent application dated August 12, 1990 dated August 12, 1990, forms an electrode for depositing an ITO electrode using photosensitive resin on upper and lower organic substrates, and uniformly aligns the film to hundreds to thousands of microns. Polarization to control the incident light on the upper glass substrate of the liquid crystal panel through an alignment film forming step of curing the liquid crystal and a sealing step of encapsulating the liquid crystal inlet using an encapsulant to prevent the liquid crystal inlet from being lost. Comprising a polarizing plate forming step of coating a film, the method of manufacturing a liquid crystal display device characterized in that it is manufactured through the step of forming a concave-condensed silica resin layer by applying a silica solution to a predetermined thickness on the polarizing plate and plastically dried. Is disclosed.
이러한 액정표시소자의 액정셀의 제조방법은 크게 상·하부 유리기판위에 전극과 배향막을 형성하는 단계, 하부 유리기판에 시일일재를 소정형상으로 프린트 하는 단계, 상부 유리기판에 스페이서를 산표시키는 단계, 상기 상·하부 유리기판을 대향시켜 핫 프레스로 압착하는 단계, 단위셀로 컷팅한 후 각셀에 진공챔버 내에서 압력차를 이용하여 액정을 강제 주입하는 단계로 이루어진다.The manufacturing method of the liquid crystal cell of the liquid crystal display device comprises the steps of forming an electrode and an alignment layer on the upper and lower glass substrates, printing the sealing material in a predetermined shape on the lower glass substrate, the step of calculating the spacer on the upper glass substrate, The upper and lower glass substrates face each other and are pressed by a hot press, and cut into unit cells, and then forcibly injecting liquid crystal into each cell using a pressure difference in a vacuum chamber.
상기 공정에 있어서 액정 주입방법은 한국특허출원 90-12014호(1990. 8.6) 및 특허출원 90-13641호(1990. 8. 29)등에 상세히 개시되어 있다.The liquid crystal injection method in the above process is disclosed in detail in Korean Patent Application No. 90-12014 (1990. 8.6) and Patent Application 90-13641 (August 29, 1990).
상기한 액정주입 방법은 진공의 참버와 대기압력 또는 진공압과 이와 상대적인 저 진공압을 이용하여 강제로 셀내에 액정을 주입하는 방법으로서 공정이 복잡하며, 많은 손실되는 액정이 발생한다는 단점을 안고 있었다.The liquid crystal injection method is a method of forcibly injecting liquid crystal into a cell by using a vacuum chamber and atmospheric pressure or a vacuum pressure and a relatively low vacuum pressure. .
따라서 본 발명은 이러한 문제점을 감안하여 이루어진 것으로서, 제조공정이 단순화되고 액정손실을 방지할 수 있는 새로운 액정셀의 제조방법을 제공하는 것을 발명의 목적으로 한다.Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a method for manufacturing a new liquid crystal cell which can simplify the manufacturing process and prevent liquid crystal loss.
상기한 목적을 달성하기 위하여 본 발명은 상·하부 유리기판 위에 소정의 전극패턴과 배향막을 순차적으로 형성하는 단계와, 하부 유리기판위에 자외선 경화 실란트로 소정형상의 다수의 시일 패턴을 인쇄하여 다수의 셀을 형성하고 그위에 스페이서를 산포하는 단계와, 상기 상부 유리기판 위에 상기 시일패턴 내측영역에 대응한 다수의 박막 액정 패턴을 형성하는 단계와, 상기 상·하부 유리기판을 진공상태에서 대향하여 가압하여 붙이고 자외선을 조사하여 상기 실란트를 경화시켜 액정을 밀봉하는 단계로 구성된 액정셀의 제소방법을 제공한다.In order to achieve the above object, the present invention comprises the steps of sequentially forming a predetermined electrode pattern and an alignment layer on the upper and lower glass substrate, and by printing a plurality of seal patterns of a predetermined shape with an ultraviolet curing sealant on the lower glass substrate a plurality of cells Forming a plurality of thin film liquid crystal patterns corresponding to an inner region of the seal pattern on the upper glass substrate, and pressing the upper and lower glass substrates in a vacuum state to face each other. The present invention provides a method for producing a liquid crystal cell comprising a step of attaching and irradiating ultraviolet rays to cure the sealant to seal the liquid crystal.
다음에 본 발명에 따른 액정표시장치용 액정셀의 제조방법을 보다 상세히 설명한다.Next, the manufacturing method of the liquid crystal cell for liquid crystal display devices which concerns on this invention is demonstrated in detail.
먼저 상·하부 유리기판 위에 필요한 소정의 괘턴전극과 배향막을 순차로 형성하는 것은 종래와 동일하게 행하여 진다.First, the predetermined rubbing electrodes and the alignment film required on the upper and lower glass substrates are sequentially formed in the same manner as in the prior art.
그후 상부 유리기판괴 하부 유리기판을 분리하고 하부 유리기판 위에는 자외선(UV) 경화 실란트(sealant)를 사용하여 다수의 소정형상의 시일패턴을 인쇄하여 다수의 셀을 형성한다. 이어서 상·하부 유리기판간에 일정한 갭을 유지하기 위한 스페이서를 분무방식으로 산표시킨다.Thereafter, the upper glass substrate is separated from the lower glass substrate, and a plurality of predetermined shapes of seal patterns are printed on the lower glass substrate by using an ultraviolet (UV) curing sealant to form a plurality of cells. Subsequently, spacers for maintaining a constant gap between the upper and lower glass substrates are plotted by a spray method.
한편 상부 유리기판 위에는 상기 시일패턴의 내측만 영역에 대응하여 도포부위를 한정하기 위한 시일드(또는 마스크)를 붙이고 10μm 이내의 막두께로 액정을 도포한다. 이 때 액정의 도포방법으로 스프레이방식 또는 로울러 인쇄방식 등을 적용할 수 있다.On the other hand, on the upper glass substrate, a shield (or mask) for limiting the coating site is attached to only the inner side of the seal pattern, and the liquid crystal is applied to the film thickness within 10 μm. In this case, a spray method or a roller printing method may be applied as a liquid crystal coating method.
그후 선택적으로 액정이 패턴 인쇄된 상부 유리기판을 진공상태에서 10-2Torr로 탈표시킨다.Thereafter, the liquid crystal patterned upper glass substrate is then de-labeled at 10 −2 Torr in vacuum.
다음에 상기 공정에서 얻어진 상기 하부 유리기판과 상부 유리기판을 진공상태에서 합쳐서 가압하여 붙이고 자외선을 조사하여 상기 실란트를 경화시킴에 의해 액정을 밀봉시킨다.Next, the lower glass substrate and the upper glass substrate obtained in the above process are put together in a vacuum, pressurized, and the liquid crystal is sealed by irradiating ultraviolet rays to cure the sealant.
이 때 자외선에 의한 경화공정전의 갑유지 공정에서 여유분 액정이 새어나올 구멍을 형성하여 셀 내부의 액정을 제어한다.At this time, the liquid crystal inside the cell is controlled by forming holes through which extra liquid crystal leaks out in the holding step before the curing process by ultraviolet rays.
그후 다수의 액정셀을 분리하기 위하여 스크라이브(scribe) 라인을 따라 대향 유리기판을 절단하여 단위액정셀을 제조한다.Thereafter, in order to separate a plurality of liquid crystal cells, a unit liquid crystal cell is manufactured by cutting the opposing glass substrate along a scribe line.
상기와 같은 본 발명의 액정셀 제조방법에 따르면 종래 방법에 비교하여 제조공정이 크게 단순화 될 뿐 아니라 손실되는 액정의 양도 크게 줄어드는 효과를 나타낸다.According to the liquid crystal cell manufacturing method of the present invention as described above, not only the manufacturing process is greatly simplified but also the amount of liquid crystals lost is greatly reduced as compared with the conventional method.
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| KR1019920018822A KR950004384B1 (en) | 1992-10-13 | 1992-10-13 | Manufacturing method of liquid crystal cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7513966B2 (en) | 2000-11-30 | 2009-04-07 | Fujitsu Limited | Apparatus for manufacturing bonded substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100510725B1 (en) * | 2002-02-20 | 2005-08-30 | 엘지.필립스 엘시디 주식회사 | Method for manufacturing liquid crystal display device |
| KR100993829B1 (en) * | 2003-05-26 | 2010-11-12 | 삼성전자주식회사 | Liquid crystal composition and method of manufacturing liquid crystal display device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7513966B2 (en) | 2000-11-30 | 2009-04-07 | Fujitsu Limited | Apparatus for manufacturing bonded substrate |
| US7621310B2 (en) | 2000-11-30 | 2009-11-24 | Fujitsu Limited | Apparatus for manufacturing bonded substrate |
| US7681522B2 (en) | 2000-11-30 | 2010-03-23 | Fujitsu Limited | Apparatus for manufacturing bonded substrate |
| US7703494B2 (en) | 2000-11-30 | 2010-04-27 | Fujitsu Limited | Apparatus for manufacturing bonded substrate |
| US7819165B2 (en) | 2000-11-30 | 2010-10-26 | Fujitsu Limited | Apparatus for manufacturing bonded substrate |
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