KR100552284B1 - Manufacturing Method Of Liquid Crystal Display - Google Patents
Manufacturing Method Of Liquid Crystal Display Download PDFInfo
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- KR100552284B1 KR100552284B1 KR1019980014686A KR19980014686A KR100552284B1 KR 100552284 B1 KR100552284 B1 KR 100552284B1 KR 1019980014686 A KR1019980014686 A KR 1019980014686A KR 19980014686 A KR19980014686 A KR 19980014686A KR 100552284 B1 KR100552284 B1 KR 100552284B1
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- South Korea
- Prior art keywords
- liquid crystal
- injection hole
- cell
- crystal display
- substrate
- Prior art date
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000010409 thin film Substances 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 239000008393 encapsulating agent Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract 2
- 239000010408 film Substances 0.000 abstract description 3
- 238000011109 contamination Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 22
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133351—Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
-
- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
Abstract
상, 하부 기판 위에 컬러 필터와 박막 트랜지스터를 형성한 후, 각각의 기판 위에 배향막을 도포한다. 다음, 두 기판 중 하나의 기판에 봉합제를 인쇄하여 두 기판을 조립하는데, 이 때. 액정 주입구가 패드부에 형성되도록 한다. 다음, 1차 절단을 하여 각각의 셀로 분리한 후, 셀을 소정의 각도로 기울인 상태에서 주입구에 액정을 떨어뜨려 주입한다. 이 때, 각도는 0°보다 크고 90°보다 작도록 한다. 다음, 봉합제를 사용하여 주입구를 봉한 후, 셀의 가장자리를 따라 2차 절단을 한다.After the color filter and the thin film transistor are formed on the upper and lower substrates, an alignment film is coated on each substrate. Next, the encapsulant is printed on one of the two substrates to assemble the two substrates, wherein. The liquid crystal injection hole is formed in the pad portion. Next, after the primary cutting is separated into each cell, the liquid crystal is injected into the injection hole while the cell is inclined at a predetermined angle. At this time, the angle is larger than 0 ° and smaller than 90 °. Next, after sealing the inlet using a suture, the secondary cut is made along the edge of the cell.
이와 같이, 패드부에 액정 주입구를 형성하여 액정의 표면 장력을 이용하여 액정을 주입함으로써, 액정의 소모량을 최소한으로 줄일 수 있고, 액정의 오염을 방지할 수 있다. As such, by forming the liquid crystal injection hole in the pad portion and injecting the liquid crystal using the surface tension of the liquid crystal, the consumption of the liquid crystal can be reduced to a minimum, and the contamination of the liquid crystal can be prevented.
Description
본 발명은 액정 표시 장치의 제조 방법에 관한 것으로서, 더욱 상세하게는 액정 표시 장치의 제조 방법 중에서 액정 주입 공정에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a liquid crystal display device, and more particularly, to a liquid crystal injection step in a method for manufacturing a liquid crystal display device.
액정 주입 공정은 셀 속에 액정 재료를 주입하기 위한 액정 공정 중의 하나로, 기판 위에 배향막을 도포하는 공정, 스페이서 산포, 실(seal) 인쇄, 기판 조립 및 절단 등의 공정을 거쳐 얻어진 액정 패널에 액정을 주입하는 공정이다.The liquid crystal injection process is one of liquid crystal processes for injecting a liquid crystal material into a cell. The liquid crystal is injected into a liquid crystal panel obtained by applying an alignment layer on a substrate, spreading a spacer, printing a seal, assembling and cutting a substrate, and the like. It is a process to do it.
액정 주입 공정에서는 수 μm인 셀 갭을 제어하고 균일하게 주입해야 하며, 또한, 주입시 셀 내부의 중앙에 기포가 형성되지 않도록 해야 한다.In the liquid crystal injection process, a cell gap of several μm must be controlled and uniformly injected, and bubbles must not be formed in the center of the cell during the injection.
이와 같이, 액정을 효율적으로 균일하게 주입하기 위하여, 일반적으로 액정이 주입되지 않은 셀과 진공 챔버(chamber)와의 압력차, 즉, 모세관 현성을 이용하는 진공 주입법이 이용된다.As such, in order to efficiently and uniformly inject the liquid crystal, a vacuum injection method using a pressure difference between a cell in which no liquid crystal is injected and a vacuum chamber, that is, capillary property is generally used.
진공 주입법에서는 주입구가 형성되어 있는 셀의 한쪽 면을 액정 트레이(tray) 내의 액정에 담그고, 챔버 내의 압력을 점차적으로 높이면서 액정을 주입하게 된다. 따라서, 액정이 주입되는 양에 비해 과도하게 소모되므로, 액정 소모량을 감소시키기 위하여 터치 필링법(touch filling)을 이용하기도 하는데, 터치 필링법은 진공 주입법과는 달리 트레이 위에 소량의 액정만을 떨어뜨리고, 표면 장력으로 인해 모여 있는 액정을 압력을 이용하여 셀 내에 주입하는 방법이다. In the vacuum injection method, one surface of the cell in which the injection hole is formed is immersed in the liquid crystal in the liquid crystal tray, and the liquid crystal is injected while gradually increasing the pressure in the chamber. Therefore, since the liquid crystal is excessively consumed compared to the amount injected, a touch filling method may be used to reduce the liquid crystal consumption. In contrast to the vacuum injection method, only a small amount of liquid crystal is dropped on the tray. It is a method of injecting the collected liquid crystal into the cell using pressure due to the surface tension.
그러나, 터치 필링법에서도 역시, 주입되는 양보다 소모되는 액정량이 더 많고 액정과 셀의 주입구를 정렬하기가 어려운 문제점이 있다.However, also in the touch peeling method, there is a problem that the amount of liquid crystal consumed more than the amount injected, and it is difficult to align the injection hole of the liquid crystal and the cell.
또한, 위와 같은 진공 주입법 및 터치 필링법을 이용한 액정 주입 방법에서는 액정 주입시 액정의 오염을 방지할 수 없으며, 압력의 변화에 따른 액정 및 셀의 변질 도는 변형 등이 발생할 수 있다. 또한, 액정을 주입한 후 주입구를 막기 위해 사용하는 UV 경화 수지가 UV 조사로 경화된 후, 셀 밖으로 0.7∼1.0mm 정도 돌출되고, 이러한 돌출된 수지는 모듈 조립시 슬림(slim)화에 문제를 야기시킨다. 따라서, 돌출 부위를 제거해야 하는 추가 공정이 필요하다. In addition, in the liquid crystal injection method using the vacuum injection method and the touch peeling method as described above, contamination of the liquid crystal may not be prevented during the liquid crystal injection, and deterioration or deformation of the liquid crystal and the cell may occur due to a change in pressure. In addition, after the liquid crystal is injected, the UV curable resin used to block the injection hole is cured by UV irradiation, and then protrudes about 0.7 to 1.0 mm out of the cell, and this protruded resin causes problems in slimming during assembly of the module. Cause. Therefore, there is a need for an additional process that requires removal of protruding sites.
본 발명이 이루고자 하는 과제는 액정의 소모량이 적고 액정 표시 장치의 신뢰성을 높일 수 있는 액정 주입 방법을 제공하는 것이다.An object of the present invention is to provide a liquid crystal injection method that can reduce the consumption of liquid crystals and increase the reliability of the liquid crystal display device.
이러한 과제를 이루기 위하여 본 발명에서는 박막 트랜지스터 기판과 컬러 필터 기판을 조립하여 패드가 위치한 가장자리에 액정 주입구를 형성하고, 주입구 위에 액정을 떨어뜨려 액정이 표면 장력에 의해 주입되도록 한다. In order to achieve this problem, in the present invention, a thin film transistor substrate and a color filter substrate are assembled to form a liquid crystal injection hole at an edge where a pad is located, and the liquid crystal is dropped on the injection hole so that the liquid crystal is injected by surface tension.
이 때, 패드부가 위에 위치하도록 하고 셀을 소정의 각도로 기울인 다음, 셀 내에 액정을 주입하는 것이 바람직하다. 각도는 0°보다는 크고 90°보다는 작은 범위에서 실시할 수 있다.At this time, it is preferable that the pad portion is positioned above, the cell is inclined at a predetermined angle, and then liquid crystal is injected into the cell. The angle may be in a range greater than 0 ° and less than 90 °.
이와 같이, 액정이 주입되는 주입구를 패드부에 형성하고 액정을 주입함으로써, 액정이 소모되는 양을 최대한 줄일 수 있으며, 액정을 주입한 후, 주입구를 막기 위해 UV 경화 수지를 경화시키더라도 돌출되는 경화제가 패드부에 형성되므로, 셀을 절단한 후 돌출된 UV 경화 수지를 제거하는 공정을 실시하지 않아도 된다.As such, by forming an injection hole into which the liquid crystal is injected, and injecting the liquid crystal, the amount of liquid crystal consumed can be reduced as much as possible. After injecting the liquid crystal, the curing agent protrudes even if the UV curing resin is cured to prevent the injection hole. Is formed in the pad portion, it is not necessary to perform the step of removing the protruding UV cured resin after cutting the cell.
그러면, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 첨부한 도면을 참고로 하여 본 발명의 실시예에 대하여 상세히 설명한다.Then, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.
도 1은 본 발명의 실시예에 따른 액정 주입 방법을 도시한 사시도로서, 도 1을 참고로 하여 본 발명의 실시예에 따른 액정 주입 방법에 대하여 설명한다.1 is a perspective view illustrating a liquid crystal injection method according to an exemplary embodiment of the present invention, and a liquid crystal injection method according to an exemplary embodiment of the present invention will be described with reference to FIG. 1.
먼저, 투명한 하부 절연 기판(10) 위에 박막 트랜지스터를 형성한 후, 대응하는 상부 절연 기판(20)에는 컬러 필터를 형성한다. 다음, 각각의 기판(10, 20)에 배향막을 도포한 후, 배향막이 형성된 상, 하판(10, 20) 중 하나의 기판 위에 봉합제(60)를 인쇄하고 상, 하판(10, 20)을 조립하여 셀 갭을 형성한다. 이 때, 봉합제(60)는 패드(30)가 위치한 면 중앙에 주입구(40)가 형성되도록 그 부분(40)을 제외하고 인쇄한 후 두 기판(10, 20)을 조립한다. 다음, 각각의 셀로 1차 절단한 후, 패드부(30)가 위로 위치하도록 하고 셀을 일정 각도(A)로 기울인 다음, 패드부(30)에 형성된 주입구(40)에 액정(50)을 떨어뜨린다. 이 때, 각도(A)는 0°보다는 크고 90°보다는 작으며, 액정(50)은 표면 장력에 의해 소모되는 양을 줄이고 최소한의 양으로 셀 내에 주입될 수 있다. 다음, 주입구(40)를 UV 경화 수지로 봉합한 후, UV를 조사한다. 이 때, 주입구 밖으로 돌출된 경화 수지는 패드부(30)에 형성되므로 돌출 부위를 제거하는 공정을 추가로 실시하지 않아도 된다. 다음, 셀의 절단선(70)을 따라 가장자리를 2차 절단한다. First, a thin film transistor is formed on the transparent lower insulating substrate 10, and then a color filter is formed on the corresponding upper insulating substrate 20. Next, after applying an alignment film to each of the substrates 10 and 20, the encapsulant 60 is printed on one of the upper and lower substrates 10 and 20 on which the alignment film is formed, and the upper and lower plates 10 and 20 are removed. Assemble to form cell gap. At this time, the encapsulant 60 assembles the two substrates 10 and 20 after printing except for the portion 40 so that the injection hole 40 is formed in the center of the surface where the pad 30 is located. Next, after the first cut into each cell, the pad portion 30 is positioned upward, the cell is inclined at a predetermined angle A, and then the liquid crystal 50 is dropped into the injection hole 40 formed in the pad portion 30. Drop. At this time, the angle (A) is larger than 0 ° and smaller than 90 °, the liquid crystal 50 can be injected into the cell in a minimum amount to reduce the amount consumed by the surface tension. Next, the inlet 40 is sealed with a UV curable resin, and then irradiated with UV. At this time, since the cured resin which protrudes out of the injection hole is formed in the pad part 30, the process of removing a protruding part does not need to be performed further. Next, the edge is cut second along the cut line 70 of the cell.
위에서 언급한 바와 같이, 셀의 주입구를 패드부에 형성한 후, 셀을 일정 각도로 유지하고 액정을 떨어뜨려 표면 장력에 의해 액정이 주입되게 함으로써, 액정의 소모량을 최소한으로 줄일 수 있으며 액정이 오염되는 것을 방지할 수 있다. 또한, UV 경화 수지가 패드부에 돌출되므로, 경화 수지가 셀의 가장자리에 돌출됨으로써 따로 제거해야 하는 추가 공정이 필요하지 않아 생산성을 향상시킬 수 있다.As mentioned above, after forming the injection hole of the cell in the pad portion, by holding the cell at an angle and dropping the liquid crystal to inject the liquid crystal by the surface tension, the consumption of the liquid crystal can be minimized and the liquid crystal is contaminated. Can be prevented. In addition, since the UV cured resin protrudes into the pad part, the cured resin protrudes at the edge of the cell, so that an additional process that needs to be removed separately is not necessary, thereby improving productivity.
도 1은 본 발명의 실시예에 따른 액정 표시 장치의 제조 방법 중에서 액정 주입 공정을 도시한 사시도이다.1 is a perspective view illustrating a liquid crystal injection process in a method of manufacturing a liquid crystal display according to an exemplary embodiment of the present invention.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980014686A KR100552284B1 (en) | 1998-04-24 | 1998-04-24 | Manufacturing Method Of Liquid Crystal Display |
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|---|---|---|---|
| KR1019980014686A KR100552284B1 (en) | 1998-04-24 | 1998-04-24 | Manufacturing Method Of Liquid Crystal Display |
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| Publication Number | Publication Date |
|---|---|
| KR19990081024A KR19990081024A (en) | 1999-11-15 |
| KR100552284B1 true KR100552284B1 (en) | 2006-05-12 |
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| KR100840681B1 (en) * | 2002-08-20 | 2008-06-24 | 엘지디스플레이 주식회사 | Encapsulation mechanism and manufacturing method of liquid crystal panel using the same |
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| JPH06273779A (en) * | 1993-03-19 | 1994-09-30 | Shinko Seiki Co Ltd | Method for injecting liquid crystal |
| WO1997016764A1 (en) * | 1995-11-02 | 1997-05-09 | Seiko Epson Corporation | Method of production of liquid crystal panel |
| KR970048812A (en) * | 1995-12-29 | 1997-07-29 | 김광호 | Liquid Crystal Display and Liquid Crystal Injection Method |
| KR970048814A (en) * | 1995-12-30 | 1997-07-29 | 김광호 | Liquid crystal display |
-
1998
- 1998-04-24 KR KR1019980014686A patent/KR100552284B1/en not_active IP Right Cessation
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03260630A (en) * | 1990-03-12 | 1991-11-20 | Seiko Epson Corp | liquid crystal display device |
| JPH0553123A (en) * | 1991-08-26 | 1993-03-05 | Ricoh Co Ltd | Liquid crystal display element and its production |
| JPH06160891A (en) * | 1992-11-20 | 1994-06-07 | Sanyo Electric Co Ltd | Liquid crystal display device |
| JPH06250195A (en) * | 1993-02-22 | 1994-09-09 | Sharp Corp | Method for injection liquid |
| JPH06273779A (en) * | 1993-03-19 | 1994-09-30 | Shinko Seiki Co Ltd | Method for injecting liquid crystal |
| WO1997016764A1 (en) * | 1995-11-02 | 1997-05-09 | Seiko Epson Corporation | Method of production of liquid crystal panel |
| KR970048812A (en) * | 1995-12-29 | 1997-07-29 | 김광호 | Liquid Crystal Display and Liquid Crystal Injection Method |
| KR970048814A (en) * | 1995-12-30 | 1997-07-29 | 김광호 | Liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990081024A (en) | 1999-11-15 |
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