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KR100291913B1 - Adherent method of polarizer for the LCD - Google Patents

Adherent method of polarizer for the LCD Download PDF

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Publication number
KR100291913B1
KR100291913B1 KR1019980008863A KR19980008863A KR100291913B1 KR 100291913 B1 KR100291913 B1 KR 100291913B1 KR 1019980008863 A KR1019980008863 A KR 1019980008863A KR 19980008863 A KR19980008863 A KR 19980008863A KR 100291913 B1 KR100291913 B1 KR 100291913B1
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KR
South Korea
Prior art keywords
polarizer
liquid crystal
lower guide
crystal display
polarizing plate
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Application number
KR1019980008863A
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Korean (ko)
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KR19990074961A (en
Inventor
안광진
Original Assignee
김순택
삼성에스디아이주식회사
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Priority to KR1019980008863A priority Critical patent/KR100291913B1/en
Publication of KR19990074961A publication Critical patent/KR19990074961A/en
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Publication of KR100291913B1 publication Critical patent/KR100291913B1/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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1393—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • 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)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

PURPOSE: A method for attaching a polarizer for an LCD(Liquid Crystal Display) is provided to stably support a polarizer, to avoid displacement, and to prevent bending and mis-alignment by placing the polarizer onto the upper surface of a lower guide. CONSTITUTION: Polarizers(8) are attached to the outer surfaces of two glass substrates. The polarizer is absorbed on a lower guide(12), and a liquid crystal display(6) is mounted on an upper table(14). The lower guide is inclined in a specific angle, and a moving unit and a roller(16) are added to the lower guide. Thus, the lower guide is movable horizontally. A pad(18) holding the liquid crystal display is prepared for the upper table. The upper table is rotatable upward, downward, forward, and rearward. Upon horizontally moving the lower table by the moving unit, the roller pressurizes the polarizer. Since the lower guide is placed onto the upper face of the lower guide, the polarizer is absorbed onto the glass substrate in a low pressure.

Description

액정 디스플레이용 편광판 부착방법{Adherent method of polarizer for the LCD}Adherent method of polarizer for the LCD}

본 발명은 백라이트의 빛을 선택적으로 투과시켜 액정의 유전이방성을 가능토록 하는 편광판을 기판 표면에 부착하는 액정 디스플레이용 편광판 부착방법에 관한 것이다.The present invention relates to a method for attaching a polarizing plate for a liquid crystal display, which attaches a polarizing plate on the surface of a substrate to selectively transmit light of a backlight to enable dielectric anisotropy of the liquid crystal.

액정 디스플레이는 외부로부터 인가되는 전압에 의해 액정의 배열 방향이 변화되어서, 액정의 유전이방성을 이용한 백라이트로부터 조사된 광(光)을 선택적으로 투과시켜 문자나 숫자 혹은 기타 임의의 아이콘을 표시하는 평판표시소자이다.In liquid crystal displays, the arrangement direction of liquid crystals is changed by a voltage applied from the outside, and a flat panel display which displays letters, numbers, or other icons by selectively transmitting the light irradiated from the backlight using the dielectric anisotropy of the liquid crystals. Element.

이러한 액정 디스플레이는 평행하게 배치된 투명한 2매의 글라스기판에 ITO(Induim Tin Oxide) 투명전극을 형성하고, 그 상측에 액정의 유전이방성을 한정하는 배향막을 적층하며, 이렇게 형성된 2매의 글라스기판을 실링하여 그 사이로 액정을 주입하고 밀봉한 구성으로 이루어진다.Such a liquid crystal display forms an ITO (Induim Tin Oxide) transparent electrode on two transparent glass substrates arranged in parallel, and laminates an alignment layer defining dielectric anisotropy of the liquid crystal on the upper side thereof. It consists of the structure which sealed, inject | poured liquid crystal between them, and sealed.

또, 2매의 글라스기판의 외측면에는 실제적으로 디스플레이의 효과를 얻기 위해, 백라이트의 광을 선편광시켜 주는 편광판이 부착되어 이루어진다.In addition, a polarizing plate that linearly polarizes the light of the backlight is attached to the outer surface of the two glass substrates in order to actually obtain the effect of the display.

이러한 구성을 실현하기 위한 것으로서, 액정 디스플레이 기판에 편광판을 부착하는 장치가 도 2에 잘 나타나 있다.As for realizing such a structure, the apparatus which attaches a polarizing plate to a liquid crystal display substrate is shown well in FIG.

도면에서 설명 부호 (2)는 부착장치의 하부 테이블을 지칭하고, 설명 부호 (4)는 상부 가이드판을 지칭한다. 하부 테이블(2)에는 액정 디스플레이(6)가 장착되고, 상부 가이드판(4)에는 편광판(8)이 흡착되어서, 하부 테이블(2)이 화살표의 방향으로 이동되는 중에 상부 가이드판(4)에 설치된 롤러(10)가 회전되므로서, 그 롤러(10)에 의해 가압되는 편광판(8)이 액정 디스플레이(6)의 기판 표면에 부착되게 한다.In the drawings, reference numeral 2 denotes a lower table of the attachment device, and reference numeral 4 denotes an upper guide plate. The lower table 2 is equipped with a liquid crystal display 6, and the upper guide plate 4 is attracted to the polarizing plate 8 so that the lower table 2 is moved to the upper guide plate 4 while the lower table 2 is moved in the direction of the arrow. The installed roller 10 is rotated so that the polarizing plate 8 pressed by the roller 10 is attached to the substrate surface of the liquid crystal display 6.

그러나 상술한 종래의 방식에 의하면, 상부 가이드판(4)의 흡착력이 약할 경우 편광판(8)이 떨어져 작업 불량이 발생되고, 반대로 흡착력이 과도할 경우 편광판(8)의 휨이나 얼라인 미스가 발생되는 문제점이 있다.However, according to the conventional method described above, when the adsorption force of the upper guide plate 4 is weak, the polarizing plate 8 is dropped and work defects occur. On the contrary, when the adsorption force is excessive, bending or alignment miss of the polarizing plate 8 occurs. There is a problem.

이러한 문제점은 특히, 액정 디스플레이의 대형화에 따라 제조 공정상의 심각한 문제점으로 대두되고 있다.In particular, such a problem has emerged as a serious problem in the manufacturing process according to the enlargement of the liquid crystal display.

상술한 종래 기술의 문제점을 해소하기 위한 목적에서 안출된 것으로서, 본 발명은 편광판의 휨이 방지되고 얼라인 미스나 작업 불량이 방지되도록 한 액정 디스플레이용 편광판 부착방법을 제공한다.As an object of the present invention, to solve the problems of the prior art, the present invention provides a method for attaching a polarizing plate for a liquid crystal display to prevent the deflection of the polarizing plate and to prevent alignment miss or work failure.

이를 위하여, 본 발명은 하부 가이드에 편광판이 흡착되게 하고, 상부 테이블에 액정 디스플레이가 장착되게 하여, 하부 테이블에 설치된 롤러가 그 하부 테이블의 수평 방향 이동에 의해 편광판을 가압하므로서, 액정 디스플레이의 기판 표면에 상기 편광판이 부착되게 하는 방법을 제안한다.To this end, the present invention allows the polarizing plate to be adsorbed on the lower guide, and the liquid crystal display is mounted on the upper table, so that the roller installed on the lower table presses the polarizing plate by the horizontal movement of the lower table, thereby providing a substrate surface of the liquid crystal display. We propose a method for attaching the polarizing plate to the.

이에 따라, 하부 가이드에 흡착되는 편광판은 적은 압력에 의해 안정되게 지지되어 이탈이 방지되며, 적은 흡착력으로 롤러에 의한 가압에도 휨 및 얼라인 미스가 발생되지 않는다.Accordingly, the polarizing plate adsorbed by the lower guide is stably supported by a low pressure to prevent separation, and bending and alignment miss do not occur even when pressurized by the roller with low adsorption force.

도 1은 본 발명에 의한 액정 디스플레이용 편광판 부착장치를 보인 개략적인 구성도.1 is a schematic configuration diagram showing a polarizing plate attachment device for a liquid crystal display according to the present invention.

도 2는 종래 공지된 액정 디스플레이용 편광판 부착장치를 보인 개략적인 구성도.Figure 2 is a schematic configuration diagram showing a conventional polarizer attachment device for a liquid crystal display.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

2-액정 디스플레이 8-편광판2-liquid crystal display 8-polarizer

12-하부 가이드 14-상부 테이블12-Lower Guide 14-Lower Table

16-롤러16-roller

이하, 본 발명의 바람직한 실시예를 첨부된 도면에 의거하여 보다 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

참고로 본 발명을 설명함에 있어, 종래 기술에서 인용된 도면과 동일한 본 발명의 구성에 대해서는 설명의 명료성을 위해 동일한 부호를 사용하기로 한다.For reference, in describing the present invention, the same reference numerals will be used for the clarity of description for the configuration of the present invention that is the same as the drawings cited in the prior art.

도 1에서 설명 부호 (6)은 액정 디스플레이를 지칭하고, 설명 부호 (8)은 편광판을 지칭한다.In Fig. 1, reference numeral 6 denotes a liquid crystal display, and reference numeral 8 denotes a polarizing plate.

액정 디스플레이(6)는 평행하게 배치된 투명한 2매의 글라스기판에 투명전극을 형성하고, 그 상측에 액정의 유전이방성을 한정하는 배향막을 적층하며, 이렇게 형성된 2매의 글라스기판을 실링하여 그 사이로 액정을 주입한 다음 밀봉한 구성으로 이루어지며, 아직 편광판(8)이 부착되지 않은 상태이다.The liquid crystal display 6 forms a transparent electrode on two transparent glass substrates arranged in parallel, stacks an alignment film on the upper side thereof to limit the dielectric anisotropy of the liquid crystal, and seals the two glass substrates thus formed therebetween. The liquid crystal is injected and then sealed, and the polarizer 8 is not yet attached.

여기서, 본 발명은 백라이트의 빛을 선편광시켜 선택적으로 투과되도록 하기 위해, 2매의 글라스기판의 외측면에 각각 편광판(8)을 부착하게 된다.In the present invention, the polarizing plates 8 are attached to the outer surfaces of the two glass substrates in order to linearly polarize the light of the backlight and selectively transmit the light.

이를 위하여, 본 발명은 편광판(8)이 하부 가이드(12)에 흡착되게 하고, 액정 디스플레이(6)가 상부 테이블(14)에 장착되게 구성한다.To this end, the present invention is configured such that the polarizing plate 8 is adsorbed on the lower guide 12 and the liquid crystal display 6 is mounted on the upper table 14.

여기서, 하부 가이드(12)는 도면과 같이 소정의 기울기로 경사지고, 이동수단(도시생략)을 갖추어서 화살표와 같이 수평 이동이 가능하게 되는 것이며, 롤러(16)를 구비한다.Here, the lower guide 12 is inclined at a predetermined inclination as shown in the drawing, and is provided with a moving means (not shown) to enable horizontal movement as shown by an arrow, and includes a roller 16.

또한, 상부 테이블(14)은 액정 디스플레이(6)를 잡아주는 패드(18)를 구비하고, 상하 및 전후 방향으로의 회전이 가능하게 되는 것이다.In addition, the upper table 14 is provided with a pad 18 for holding the liquid crystal display 6, and the upper table 14 can be rotated in the vertical direction.

이와 같은 구성에 의거하여, 본 발명은 하부 가이드(12)에 편광판(8)이 흡착되고 상부 테이블(14)에 액정 디스플레이(2)가 장치된 상태에서, 이동수단에 의해 하부 테이블(12)을 수평 방향으로 이동함으로써, 하부 테이블(12)에 설치된 롤러(16)가 편광판(8)을 가압함에 의해 액정 디스플레이(2)의 글라스기판 표면에 상기 편광판(8)을 부착할 수 있다.Based on this configuration, the present invention provides the lower table 12 by means of moving means in a state where the polarizing plate 8 is adsorbed on the lower guide 12 and the liquid crystal display 2 is installed on the upper table 14. By moving in the horizontal direction, the roller 16 provided on the lower table 12 presses the polarizing plate 8 so that the polarizing plate 8 can be attached to the glass substrate surface of the liquid crystal display 2.

이 경우에, 편광판(8)은 하부 가이드(12)의 상면에 위치되므로 적은 압력으로도 흡착이 가능하게 된다. 따라서, 편광판(8)을 안정되게 지지할 수 있다.In this case, since the polarizing plate 8 is located on the upper surface of the lower guide 12, adsorption is possible at a low pressure. Therefore, the polarizing plate 8 can be stably supported.

이상에서 설명된 구성 및 작용을 통하여 알 수 있듯이, 본 발명에 의한 액정 디스플레이용 편광판 부착방법은 종래 기술의 문제점을 실질적으로 해소하고 있다.As can be seen through the configuration and operation described above, the method for attaching a polarizing plate for a liquid crystal display according to the present invention substantially solves the problems of the prior art.

즉, 본 발명은 하부 가이드의 상면에 편광판을 위치시킴으로써, 적은 압력으로 안정되게 지지할 수 있으며, 이탈이 방지되게 함은 물론 롤러에 의한 가압시 휨 및 얼라인 미스가 발생되지 않도록 할 수 있다.That is, the present invention can be stably supported by a small pressure by placing the polarizing plate on the upper surface of the lower guide, it is possible to prevent the separation and to prevent bending and alignment miss when pressing by the roller.

따라서, 본 발명에 의하면 신뢰성이 향상된 제품을 얻을 수 있으며, 외관 검사시 편광판에 의한 제품 불량을 퍼펙트하게 제거하는 효과를 얻을 수 있다.Therefore, according to the present invention, a product having improved reliability can be obtained, and an effect of completely removing product defects due to the polarizing plate at the time of appearance inspection can be obtained.

한편, 본 발명은 상술한 특정의 바람직한 발명에 한정되지 아니하며, 특허 청구의 범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능할 것이다.On the other hand, the present invention is not limited to the above-described specific preferred invention, any person having ordinary skill in the art to which the invention belongs without departing from the gist of the invention claimed in the claims. It will be possible.

Claims (1)

하부 가이드에 편광판이 흡착되게 하고, 상부 테이블에 액정 디스플레이가 장착되게 하는 단계와; 하부 테이블에 설치된 롤러가 그 하부 테이블의 수평 방향 이동에 의해 편광판을 가압하여, 액정 디스플레이의 기판 표면에 상기 편광판이 부착되게 하는 단계로 이루어짐을 특징으로 하는 액정 디스플레이용 편광판 부착방법.Allowing the polarizing plate to be adsorbed on the lower guide and mounting the liquid crystal display on the upper table; And a roller provided on the lower table pressurizing the polarizing plate by the horizontal movement of the lower table to cause the polarizing plate to adhere to the substrate surface of the liquid crystal display.
KR1019980008863A 1998-03-16 1998-03-16 Adherent method of polarizer for the LCD KR100291913B1 (en)

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KR100539972B1 (en) * 1998-12-04 2006-04-28 삼성전자주식회사 Polarizer Attaching Device for Liquid Crystal Display and Polarizing Plate Attaching Method Using The Same
JP4340788B2 (en) * 2003-04-22 2009-10-07 シャープ株式会社 Polarizer pasting device to substrate
KR101345968B1 (en) * 2012-04-16 2014-02-12 하이디스 테크놀로지 주식회사 Apparatus for attaching polarizing plate to liquid crystal display panel

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JPH0238047A (en) * 1988-07-28 1990-02-07 Sharp Corp Apparatus for producing laminated structure

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Publication number Priority date Publication date Assignee Title
JPH0238047A (en) * 1988-07-28 1990-02-07 Sharp Corp Apparatus for producing laminated structure

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