KR20100131567A - Method for producing liquid crystal display apparatus - Google Patents

Method for producing liquid crystal display apparatus Download PDF

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Publication number
KR20100131567A
KR20100131567A KR1020090050220A KR20090050220A KR20100131567A KR 20100131567 A KR20100131567 A KR 20100131567A KR 1020090050220 A KR1020090050220 A KR 1020090050220A KR 20090050220 A KR20090050220 A KR 20090050220A KR 20100131567 A KR20100131567 A KR 20100131567A
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liquid crystal
crystal display
chamber
adhesive sheet
glass
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KR1020090050220A
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Korean (ko)
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KR101048667B1 (en
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김성민
김경식
이상억
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(주)아이디에스
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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/02—Assembly jigs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B32B37/1018—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using only vacuum
    • 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
    • G02F1/133354—Arrangements for aligning or assembling substrates
    • 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

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE: A method for producing a liquid crystal display apparatus is provided to minimize the loss of a transmitted light by using a thermosetting optical film. CONSTITUTION: A liquid crystal and a window are arranged and laminated in a jig(S10), and the jig is put into a chamber(S20). A bonding sheet is activated by increasing the temperature inside the chamber(S30). A panel is compressed by making the inside of the chamber in vacuum state(S40,S50).

Description

액정표시장치 제조방법{Method for producing liquid crystal display apparatus}Method for producing liquid crystal display apparatus

본 발명은 액정표시장치 제조방법에 관한 것으로서, 보다 상세하게는 열경화성 광학 필름을 이용해 투과되는 광손실을 최소화할 수 있게 하는 액정표시장치 제조방법에 관한 것이다. The present invention relates to a method for manufacturing a liquid crystal display device, and more particularly, to a method for manufacturing a liquid crystal display device which can minimize light loss transmitted using a thermosetting optical film.

일반적으로 액정표시장치는 (LCD liquid crystal display) 인가전압에 따른 액정의 투과도의 변화를 이용하여 각종 장치에서 발생되는 여러 가지 전기적인 정보를 시각정보로 변화시켜 전달하는 전기소자이다. 자기발광성이 없어 후광이 필요하지만 소비전력이 적고 휴대용으로 편리해 널리 사용하는 평판 디스플레이를 말한다.BACKGROUND ART In general, a liquid crystal display (LCD liquid crystal display) is an electric device that transmits various electrical information generated by various devices to visual information by using a change in transmittance of liquid crystal according to an applied voltage. It doesn't have self-luminous ability and needs backlight, but it is a flat panel display that is widely used because it consumes less power and is convenient to carry.

통상 종래의 액정표시장치는 도 1에 도시된 바와 같이 빛의 투과나 선명한 영상을 전달하기 위해 표면의 조도가 상당히 정밀하게 이루어진 액정(1)과 액정의 표면을 보호하기 위한 수단으로 원도우(2)를 설치하여 사용하고 있다. 또한 액정(1)과 원도우(2) 사이에는 상호 간에 외부 충격으로부터 완충력을 수행하기 위한 에어 캡(3)이 존재한다.In general, the conventional liquid crystal display device, as shown in FIG. 1, has a liquid crystal 1 having a very high surface roughness to transmit light or a clear image, and a window 2 as a means for protecting the surface of the liquid crystal. Install and use In addition, between the liquid crystal 1 and the window 2, there is an air cap 3 for performing a buffer force from an external impact to each other.

그러나 이러한 에어 캡은 에어를 통과하는 빛이 굴절에 의해 광손실이 발생하는 문제점이 있으며, 또한 에어 캡 내에 존재하는 이물질 등에 의해 난반사되는 굴절로 인해 광손실이 커지는 문제점이 있었다.However, such an air cap has a problem that light loss occurs due to refraction of the light passing through the air, and also has a problem in that the light loss is increased due to the refracted reflection by the foreign matter and the like present in the air cap.

본 발명은 상술한 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 열경화성 광학 필름을 이용해 투과되는 광손실을 최소화할 수 있게 하는 액정표시장치 제조방법을 제공함에 있다.The present invention has been made to solve the above problems, an object of the present invention is to provide a method for manufacturing a liquid crystal display device that can minimize the light loss transmitted by using a thermosetting optical film.

또한 본 발명의 목적은 열경화성 광학 필름을 다단계로 압축되게 함으로써 원도우와 액정 상호간의 사이 밀착력을 증가시켜 광 굴절율을 최소화할 수 있게 하는 액정표시장치 제조방법를 제공함에 있다. It is also an object of the present invention to provide a method for manufacturing a liquid crystal display device by minimizing light refractive index by increasing the adhesion between the window and the liquid crystal by compressing the thermosetting optical film in multiple stages.

위와 같은 기술적 과제를 해결하기 위하여 본 발명에 의한 액정표시장치 제조방법은 1) 액정, 접착시트 및 원도우를 지그에 정렬하여 적층하는 단계; 2) 지그를 챔버에 진입시키는 단계; 3) 챔버 내부를 승온화시켜 접착시트를 활성화시키는 단계; 4) 첨배 내부를 진공배기시켜 패널을 압착하는 단계; 및 5) 공정이 끝난 패널을 챔버로부터 배출하는 단계;를 포함하여 이루어진다.In order to solve the above technical problem, the liquid crystal display device manufacturing method according to the present invention comprises the steps of: 1) laminating the liquid crystal, the adhesive sheet and the window in alignment with the jig; 2) entering the jig into the chamber; 3) heating the inside of the chamber to activate the adhesive sheet; 4) compressing the panel by evacuating the inside of the cup; And 5) discharging the finished panel from the chamber.

또한 상기 3)단계에서 접착시트는 에바(EVA-Ethyene Vinye Acetate)인 것이 바람직하다.In addition, the adhesive sheet in step 3) is preferably EVA (EVA-Ethyene Vinye Acetate).

그리고 상기 3)단계는 80~100℃ 온도 범위 내에서 이루어지게 하는 것이 바람직하다.And step 3) is preferably to be made in the temperature range of 80 ~ 100 ℃.

또한 상기 1)단계에서 액정은 글라스 터치스크린(Glass TSP) 방식이거나 또는 LCD (Liquid Crystal Display) 방식 중 선택된 어느 하나를 이용하거나 또는 글 라스 터치스크린(Glass TSP) 방식과 LCD (Liquid Crystal Display) 방식이 모두 포함되게 한다.Also, in step 1), the liquid crystal may be a glass touch screen (Glass TSP) method or an LCD (Liquid Crystal Display) method, or one selected from the glass touch screen (Glass TSP) method and the LCD (Liquid Crystal Display) method. Make sure that all of this is included.

본 발명에 따르면, 열경화성 광학 필름을 이용해 투과되는 광손실을 최소화할 수 있게 하는 효과가 있다.According to the present invention, there is an effect to minimize the light loss transmitted using the thermosetting optical film.

또한 본 발명의 목적은 열경화성 광학 필름을 다단계로 압축되게 함으로써 원도우와 액정 상호간의 사이 밀착력을 증가시켜 광 굴절율을 최소화할 수 있게 하는 효과가 있다.In addition, an object of the present invention is to increase the adhesion between the window and the liquid crystal by minimizing the optical refractive index by allowing the thermosetting optical film to be compressed in multiple stages.

이하, 첨부된 도면을 참조하여 본 발명에 의한 실시예의 구성 및 작용을 설명한다.Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the embodiment according to the present invention.

도 2 내지 도 4에 도시된 바와 같이 본 발명의 실시예는 1) 액정, 접착시트 및 원도우를 정렬시켜 지그에 적층시키는 단계(S10), 2) 액정, 접착시트 및 원도우가 적층된 지그를 이송시켜 챔버에 진입시키는 단계(S20), 3) 챔버 내부를 승온화시켜 접착시트를 활성화하는 단계(S30), 4) 챔버 내부를 진공배기시켜 패널을 압착하는 단계(S40) 및 5) 공정이 끝난 패널을 배출시켜 이송하는 단계(S50)로 이루어진다.As shown in Figures 2 to 4 an embodiment of the present invention 1) the step of aligning the liquid crystal, the adhesive sheet and the window and laminating on the jig (S10), 2) transfer the jig in which the liquid crystal, the adhesive sheet and the window is laminated To enter the chamber (S20), 3) heating the inside of the chamber to activate the adhesive sheet (S30), 4) vacuuming the inside of the chamber to compress the panel (S40), and 5) finishing the process. Discharging and conveying the panel is made (S50).

이러한 공정을 통해 형성된 패널은 액정 측과 원도우 측이 접착시트에 의해 완전히 밀착된 상태를 유지할 수 있어 광 손실을 최소화할 수 있어 가시성이 향상 되고 품질 및 신뢰성을 향상시킬 수 있게 된다.The panel formed through this process can maintain a state in which the liquid crystal side and the window side are completely in contact with the adhesive sheet to minimize light loss, thereby improving visibility and improving quality and reliability.

특히 상기 접착시트를 챔버 내에서 80~100℃의 온도 범위로 가열시켜 액정과 원도우 사이에서 상호 점착되게 한 후 이를 다시 챔버 내부를 진공배기시켜 진공압에 의해 경화된 접착시트가 액정과 원도우에 밀착되게 함으로써 접착시트 내부에 형성될 수 있는 기포 등을 방지할 수 있게 되어 가시성을 더욱 향상시킬 수 있게 된다.In particular, the adhesive sheet is heated to a temperature range of 80 to 100 ° C. in the chamber to be mutually adhered between the liquid crystal and the window, and then vacuum-exhausted inside the chamber, and the adhesive sheet cured by vacuum pressure adheres closely to the liquid crystal and the window. By doing so, it is possible to prevent bubbles and the like that may be formed in the adhesive sheet, thereby further improving visibility.

또한 상기 지그는 통상 반도체 공정에서 이용되는 정전척을 이용할 수도 있고 기구적인 수단을 이용할 수 있다. 이러한 지그는 상기 액정, 접착시트 및 원도우를 정렬 적층시킬 수 있는 것이면 어떠한 것도 가능하다.In addition, the jig may use an electrostatic chuck commonly used in a semiconductor process or may use mechanical means. The jig can be any one as long as the liquid crystal, the adhesive sheet, and the window can be laminated.

한편 상기 1)단계에서 액정은 글라스 터치스크린(Glass TSP) 방식이거나 또는 LCD (Liquid Crystal Display) 방식 중 선택된 어느 하나를 이용하거나 또는 도 3에 도시된 바와 같이 액정(10')은 글라스 터치스크린(Glass TSP) 방식과 LCD (Liquid Crystal Display) 방식이 모두 포함되게 구성시킬 수도 있다. 상기 글라스 터치스크린(Glass TSP) 방식과 LCD (Liquid Crystal Display) 방식 함께 이용할 경우 원도우 측에 가깝게 위치되는 것은 글라스 터치스크린(Glass TSP) 방식과 LCD (Liquid Crystal Display) 방식 중 어느 것이던 무관하다.Meanwhile, in step 1), the liquid crystal may be a glass TSP or a liquid crystal display (LCD), or as shown in FIG. 3, the liquid crystal 10 ′ may be a glass touch screen ( It can also be configured to include both Glass TSP (LCD) and Liquid Crystal Display (LCD) methods. When the glass touch screen (Glass TSP) method and the LCD (Liquid Crystal Display) method are used together, it is irrelevant to any one of the glass touch screen (Glass TSP) method and the LCD (Liquid Crystal Display) method.

그리고 상기 챔버는 통상 반도체 공정 공정챔버에 해당하는 게이트 밸브가 구비되는 진공챔버를 이용할 수 있으며, 챔버가 상하로 분리되는 상온 공정용 챔버를 이용하는 것도 가능하다. 즉, 각각이 적층된 상태로 챔버에 진입한 후 일정 온도 범위내에서 접착시트를 가열 열경화시켜 경화된 접착시트에 의해 액정과 원도우 가 접합될 수 있는 정도의 구성을 가지며 챔버 내부를 진공배기시켜 경화된 상태의 접착시트가 진공압에 의해 액정 및 원도우에 밀착될 수 있는 정도의 구서을 가지면 가능하다. 이러한 챔버는 통상 반도체 처리챔버로서 구성에 대한 구체적인 설명을 생략한다.The chamber may use a vacuum chamber having a gate valve corresponding to a semiconductor process chamber, and may use a chamber for a room temperature process in which the chamber is divided up and down. In other words, after entering the chamber in a stacked state, the adhesive sheet is heated and heat-cured within a predetermined temperature range, and the liquid crystal and the window can be bonded by the cured adhesive sheet. It is possible if the adhesive sheet in the cured state has a degree of adhesion to the liquid crystal and the window by vacuum pressure. Such a chamber is usually a semiconductor processing chamber, and a detailed description of the configuration is omitted.

도 1은 종래의 일반적인 액정표시장치의 단면도. 1 is a cross-sectional view of a conventional general liquid crystal display device.

도 2는 본 발명에 의한 액정표시장치 제조방법을 나타내기 위한 개략도.2 is a schematic view showing a method of manufacturing a liquid crystal display device according to the present invention;

도 3은 본 발명에 의한 다른 실시예를 나타내는 개략도.3 is a schematic view showing another embodiment according to the present invention.

도 4는 본 발명에 의한 액정표시장치 제조방법을 나타내는 블록도.4 is a block diagram showing a method of manufacturing a liquid crystal display device according to the present invention;

Claims (4)

1) 액정, 접착시트 및 원도우를 지그에 정렬하여 적층하는 단계;1) laminating the liquid crystal, the adhesive sheet and the window aligned with the jig; 2) 지그를 챔버에 진입시키는 단계;2) entering the jig into the chamber; 3) 챔버 내부를 승온화시켜 접착시트를 활성화시키는 단계;3) heating the inside of the chamber to activate the adhesive sheet; 4) 첨배 내부를 진공배기시켜 패널을 압착하는 단계; 및4) compressing the panel by evacuating the inside of the cup; And 5) 공정이 끝난 패널을 챔버로부터 배출하는 단계;를 포함하여 이루어지는 것을 특징으로 하는 액정표시장치 제조방법.5) discharging the finished panel from the chamber; and a method of manufacturing a liquid crystal display device. 제 1 항에 있어서,The method of claim 1, 상기 3)단계에서 접착시트는 에바(EVA-Ethyene Vinye Acetate)인 것을 특징으로 하는 액정표시장치 제조방법.In the step 3), the adhesive sheet is EVA (EVA-Ethyene Vinye Acetate) manufacturing method of a liquid crystal display. 제 1 항에 있어서,The method of claim 1, 상기 3)단계는 80~100℃ 온도 범위 내에서 이루어지게 하는 것을 특징으로 하는 액정표시장치 제조방법.Step 3) is a liquid crystal display device manufacturing method characterized in that it is made within the temperature range of 80 ~ 100 ℃. 제 1 항에 있어서,The method of claim 1, 상기 1)단계에서 액정은 글라스 터치스크린(Glass TSP) 방식이거나 또는 LCD (Liquid Crystal Display) 방식 중 선택된 어느 하나를 이용하거나 또는 글라스 터 치스크린(Glass TSP) 방식과 LCD (Liquid Crystal Display) 방식이 모두 포함되게 하는 것을 특징으로 하는 액정표시장치 제조방법.In the step 1), the liquid crystal may be a glass touch screen (Glass TSP) method or any one selected from a liquid crystal display (LCD) method, or a glass touch screen (Glass TSP) method and an LCD (Liquid Crystal Display) method. Liquid crystal display device manufacturing method characterized in that all to be included.
KR1020090050220A 2009-06-08 2009-06-08 Liquid Crystal Display Manufacturing Method KR101048667B1 (en)

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US9616647B2 (en) 2012-10-05 2017-04-11 Samsung Display Co., Ltd. Device for bonding window and method for manufacturing display device using the same

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KR100689199B1 (en) 2005-12-30 2007-03-02 두산디앤디 주식회사 Encapsulation method of organic light emitting diodes and apparatus of the same
KR20070109772A (en) * 2006-05-12 2007-11-15 삼성전자주식회사 Method and apparatus of fabricating protecting member for display apparatus and method of fabricating display apparatus using the same
JP4978997B2 (en) * 2006-12-25 2012-07-18 株式会社ジャパンディスプレイイースト Manufacturing method of display device

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US9616647B2 (en) 2012-10-05 2017-04-11 Samsung Display Co., Ltd. Device for bonding window and method for manufacturing display device using the same
US11090919B2 (en) 2012-10-05 2021-08-17 Samsung Display Co., Ltd. Device for bonding window and method for manufacturing display device using the same

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