KR19990026636A - LCD injection method - Google Patents

LCD injection method Download PDF

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Publication number
KR19990026636A
KR19990026636A KR1019970048844A KR19970048844A KR19990026636A KR 19990026636 A KR19990026636 A KR 19990026636A KR 1019970048844 A KR1019970048844 A KR 1019970048844A KR 19970048844 A KR19970048844 A KR 19970048844A KR 19990026636 A KR19990026636 A KR 19990026636A
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South Korea
Prior art keywords
liquid crystal
substrate
injection method
color filter
printed
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KR1019970048844A
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Korean (ko)
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KR100268003B1 (en
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이상문
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구자홍
엘지전자 주식회사
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Priority to KR1019970048844A priority Critical patent/KR100268003B1/en
Publication of KR19990026636A publication Critical patent/KR19990026636A/en
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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
    • G02F1/1341—Filling or 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
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

Abstract

본 발명에 따른 액정주입방법은, 진공챔버(chamber) 내에서 회전하는 칼라필터 기판의 표면에 액정을 떨어뜨려 원심력에 의해 액정을 고르게 퍼지게 한 후, 박막트랜지스터기판을 합착하는 것이다.In the liquid crystal injection method according to the present invention, the liquid crystal is dropped on the surface of the color filter substrate rotating in the vacuum chamber to spread the liquid crystal evenly by centrifugal force, and then the thin film transistor substrate is bonded.

Description

액정주입방법LCD injection method

본 발명은 액정표시소자의 제조방법에 관한 것으로, 특히, 액정주입방법에 관한 것이다.The present invention relates to a method for manufacturing a liquid crystal display device, and more particularly, to a liquid crystal injection method.

박막트랜지스터 액정표시소자(TFT-LCD) 공정은 TFT공정, 칼라필터(C/F)공정, LCD공정 및 모듈공정의 네가지 공정으로 나눌 수 있으며, 이 중 상기한 LCD공정은 배향막 도포단계, 러빙 또는 광배향에 의한 액정의 배향방향 결정단계, 스페이서 산포단계, 및 액정 주입단계로 나뉘어진다.Thin-film transistor liquid crystal display (TFT-LCD) process can be divided into four processes: TFT process, color filter (C / F) process, LCD process, and module process. The liquid crystal is divided into an alignment direction determination step of a liquid crystal by photo alignment, a spacer dispersion step, and a liquid crystal injection step.

상기한 LCD공정의 여러 단계 중, 본 발명에서는 액정의 주입방법에 관하여만 언급한다.Among the various steps of the LCD process described above, the present invention refers only to a method of injecting liquid crystals.

일반적인 액정의 주입방법은 모세관 현상과 압력차를 이용하여 상하판 사이에 액정을 주입하는 것인데, 이러한 주입방법은 진공배기계, 진공챔버, 상하이동장치, 액정을 담는 지그(jig) 및 N2분사기를 필요로 한다.A common method of injecting liquid crystals is to inject liquid crystals between the upper and lower plates by using a capillary phenomenon and a pressure difference. Such injection methods include a vacuum exhaust machine, a vacuum chamber, a moving device, a jig containing liquid crystals, and an N 2 injector. in need.

도 1a∼1d는 종래 액정의 주입방법을 나타내는 도면으로서, 먼저 도 1a에 나타내듯이, 진공배기(점선화살표)를 통해 챔버(10) 내를 약 10-2토르(Torr) 정도의 진공상태로 유지한다. 이후, 도 1b에 나타내듯이, 밀봉부재(17)로 챔버를 밀봉한 상태에서 이동장치(미도시)를 이용하여 LCD의 액정주입구(15) 부분을 액정표면에 접촉 또는 침적시키면 도 1c에 나타내듯이, 모세관 현상에 의해 액정이 셀(11) 내로 빨려 올라가고, 계속해서 N2를 진공챔버(10) 내로 서서히 분사시키면 셀내부와 챔버 내에 압력차가 발생하여 액정이 셀내부의 빈 공간을 채우게 된다.1A to 1D illustrate a conventional method of injecting a liquid crystal. First, as shown in FIG. 1A, the inside of the chamber 10 is maintained in a vacuum state of about 10 −2 Torr through a vacuum exhaust (dashed arrow). do. Thereafter, as shown in FIG. 1B, when the chamber is sealed with the sealing member 17, the liquid crystal inlet 15 of the LCD is contacted or deposited on the liquid crystal surface using a moving device (not shown), as shown in FIG. 1C. When liquid crystal is sucked up into the cell 11 by capillary action, and N 2 is gradually injected into the vacuum chamber 10, a pressure difference occurs in the cell and in the chamber to fill the empty space inside the cell.

그러나, 상기한 액정의 주입방법은 많은 장비를 필요로 할 뿐만 아니라, 액정의 소모량이 많고, 충분한 액정의 주입을 위해서는 많은 시간을 필요로 한다(예를 들어, 12.1인치 기준으로 약 3시간 소요). 또한, 주입후 이동시 주입구로 기포가 유입되어 후에 얼룩이 생길 수 있다는 문제점이 있다.However, the method of injecting the liquid crystal not only requires a lot of equipment, but also consumes a large amount of liquid crystal, and requires a long time to inject a sufficient liquid crystal (for example, about 3 hours on a 12.1 inch basis). . In addition, there is a problem that bubbles may flow into the injection hole during the movement after injection, may cause staining later.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위한 것으로서, 진공챔버내에서 회전하는 기판에 액정을 떨어뜨려 고르게 산포시키므로써 주입시간의 감소 및 얼룩의 제거가 가능한 액정주입방법을 제공하는 것을 목적으로 한다.The present invention is to solve the problems of the prior art, an object of the present invention is to provide a liquid crystal injection method that can reduce the injection time and remove the stain by evenly spreading the liquid crystal on the rotating substrate in the vacuum chamber. do.

본 발명에서는 진공챔버, 액정공급장치 및 기판회전장치가 사용되는데, 상기한 목적은, 먼저 진공챔버 내에서 회전하는 칼라필터 기판의 표면에 액정을 떨어뜨려 원심력에 의해 액정을 고르게 퍼지게 하고, 기판의 회전속도를 줄여 균일한 액정의 산포를 유도한 후, 상기 칼라필터 기판과 박막트랜지스터 기판을 합착하는 것에 의해 달성될 수 있다.In the present invention, a vacuum chamber, a liquid crystal supply device, and a substrate rotating device are used. The above object is to first drop the liquid crystal onto the surface of the color filter substrate rotating in the vacuum chamber to spread the liquid crystal evenly by centrifugal force, By reducing the rotational speed to induce a uniform dispersion of the liquid crystal, it can be achieved by bonding the color filter substrate and the thin film transistor substrate.

상기한 방법은 상기 칼라필터 기판과 액정 사이에 틈이 형성되지 않으므로 기포발생에 의한 얼룩의 방지, 신속한 액정의 공급에 의한 주입시간의 단축이 가능하고, 종래 기술에서의 주입 후 밀봉공정을 필요로 하지 않는다.Since the above method does not form a gap between the color filter substrate and the liquid crystal, it is possible to prevent stains caused by bubble generation and to shorten the injection time by supplying liquid crystal quickly, and require a post-injection sealing process in the prior art. I never do that.

도 1은, 종래 액정주입방법을 나타내는 도면.1 is a view showing a conventional liquid crystal injection method.

도 2는, 본 발명에 따른 액정주입방법을 나타내는 도면.2 is a view showing a liquid crystal injection method according to the present invention.

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

100 : 칼라필터기판 101 : 박막트랜지스터 기판100: color filter substrate 101: thin film transistor substrate

103 : 시일(seal)제 105 : 액정공급노즐103: sealant 105: liquid crystal supply nozzle

107 : 액정107: liquid crystal

이하, 첨부한 도면을 참조하여 본 발명에 따른 액정주입방법을 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the liquid crystal injection method according to the present invention.

도 2a∼2d는 본 발명에 따른 액정주입방법을 나타내는 도면으로서, 먼저, 도 2a에 나타내듯이 칼라필터 기판(100)에 시일제(103)를 시일선(미도시)을 따라 인쇄한 후 건조시킨다. 그 후, 도 2b에 나타내듯이 챔버(미도시) 내에서 상기 칼라필터기판(100)을 회전시키면서 액정공급노즐(105)을 통해 액정(107)을 상기 칼라필터 기판(100)의 표면에 떨어뜨린다. 이때 기판(100)의 회전속도는 액정(107)이 시일제(103)의 외부로 흐르지 않도록 적절하게 조절한다. 게속해서 상기 기판(100)의 회전속도를 서서히 줄여 가면서 상기 도 2b의 과정을 되풀이한다. 마지막으로, 상기 칼라필터 기판(100)과 박막트랜지스터 기판(101)을 합착하면 두 기판 사이에는 액정층(미도시)이 형성된다.2A to 2D are views illustrating a liquid crystal injection method according to the present invention. First, as shown in FIG. 2A, a sealing agent 103 is printed on a color filter substrate 100 along a seal line (not shown) and dried. . Thereafter, as shown in FIG. 2B, the liquid crystal 107 is dropped on the surface of the color filter substrate 100 through the liquid crystal supply nozzle 105 while rotating the color filter substrate 100 in a chamber (not shown). . At this time, the rotation speed of the substrate 100 is appropriately adjusted so that the liquid crystal 107 does not flow out of the sealing agent 103. The process of FIG. 2B is repeated while gradually decreasing the rotation speed of the substrate 100. Finally, when the color filter substrate 100 and the thin film transistor substrate 101 are bonded together, a liquid crystal layer (not shown) is formed between the two substrates.

상기 기판에서 액정(107)의 두께는 액정(107)의 점도 및 적하량과 상기 기판의 회전속도와 회전시간에 의해 결정된다. 또한, 기판의 회전은 칼라필터 기판(100)을 담을 수 있는 수단을 외부에 구성하여도 된다.The thickness of the liquid crystal 107 in the substrate is determined by the viscosity and the dropping amount of the liquid crystal 107, the rotation speed and the rotation time of the substrate. In addition, the rotation of the substrate may constitute a means for containing the color filter substrate 100 to the outside.

본 발명에 따른 액정주입방법에 의하면 액정주입 후에 발생하는 얼룩을 방지할 수 있고, 노즐을 통하여 액정을 신속하게 공급하므로써 주입시간을 획기적으로 단축시킬 수 있으며, 액정을 기판 표면에 직접 주입하므로 종래 기술의 밀봉공정이 불필요하다.According to the liquid crystal injection method according to the present invention can prevent stains generated after the liquid crystal injection, it is possible to significantly shorten the injection time by supplying the liquid crystal through the nozzle rapidly, and since the liquid crystal is injected directly to the substrate surface prior art Sealing process is unnecessary.

Claims (4)

기판을 준비하는 단계와,Preparing a substrate; 상기 기판 상에 시일제를 인쇄하는 단계와,Printing a sealant on the substrate; 진공챔버 내에서 상기 기판 상에 인쇄된 시일제의 안쪽 영역에 액정층을 형성하는 단계와,Forming a liquid crystal layer in an inner region of the sealant printed on the substrate in the vacuum chamber; 상기 기판과, 대응하는 다른 기판을 합착하는 단계로 이루어진 액정표시소자의 액정주입방법.A liquid crystal injection method of a liquid crystal display device comprising the step of bonding the substrate and a corresponding other substrate. 제1항에 있어서, 상기 액정층을 형성하는 단계는 상기 시일제가 인쇄된 기판을 서서히 회전시키면서 액정공급장치를 통해 상기 기판 위에 액정을 떨어뜨리는 단계임을 특징으로 하는 액정표시소자의 액정주입방법.The liquid crystal injection method of claim 1, wherein the forming of the liquid crystal layer comprises dropping the liquid crystal onto the substrate through a liquid crystal supply while gradually rotating the substrate on which the sealing agent is printed. 제1항에 있어서, 상기 시일제가 인쇄된 기판이 칼라필터층을 포함하는 것을 특징으로 하는 액정표시소자의 액정주입방법.The liquid crystal injection method of claim 1, wherein the substrate on which the sealing agent is printed comprises a color filter layer. 제1항에 있어서, 상기 시일제가 인쇄된 기판과 대응하는 기판이 스위칭소자를 포함하는 것을 특징으로 하는 액정표시소자의 액정주입방법.The liquid crystal injection method according to claim 1, wherein the substrate corresponding to the substrate on which the sealant is printed comprises a switching element.
KR1019970048844A 1997-09-25 1997-09-25 Method of injecting liquid crystal KR100268003B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010098943A (en) * 2000-04-27 2001-11-08 구사마 사부로 Manufacturing method for manufacturing electro-optical device, sealing member compression curing apparatus, electro-optical device, and electronic equipment
KR100363892B1 (en) * 1999-09-21 2002-12-11 삼성전자 주식회사 Method of filling liquid crystal in an LCD panel
KR100420524B1 (en) * 2002-01-07 2004-03-02 엘지전자 주식회사 The liquid crystal filling method and the same apparatus of LCD
KR100493868B1 (en) * 1999-11-26 2005-06-10 엘지.필립스 엘시디 주식회사 Method for injecting a liquid crystal
KR100494700B1 (en) * 2001-12-22 2005-06-13 비오이 하이디스 테크놀로지 주식회사 Method for manufacturing liquid crystal display device
KR100767361B1 (en) * 2001-02-28 2007-10-17 삼성전자주식회사 Method for manufacturing a liquid crystal display

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3159504B2 (en) * 1992-02-20 2001-04-23 松下電器産業株式会社 Liquid crystal panel manufacturing method
KR100319925B1 (en) * 1995-11-30 2002-04-22 윤종용 LCD and its manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100363892B1 (en) * 1999-09-21 2002-12-11 삼성전자 주식회사 Method of filling liquid crystal in an LCD panel
KR100493868B1 (en) * 1999-11-26 2005-06-10 엘지.필립스 엘시디 주식회사 Method for injecting a liquid crystal
KR20010098943A (en) * 2000-04-27 2001-11-08 구사마 사부로 Manufacturing method for manufacturing electro-optical device, sealing member compression curing apparatus, electro-optical device, and electronic equipment
KR100767361B1 (en) * 2001-02-28 2007-10-17 삼성전자주식회사 Method for manufacturing a liquid crystal display
KR100494700B1 (en) * 2001-12-22 2005-06-13 비오이 하이디스 테크놀로지 주식회사 Method for manufacturing liquid crystal display device
KR100420524B1 (en) * 2002-01-07 2004-03-02 엘지전자 주식회사 The liquid crystal filling method and the same apparatus of LCD

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