KR100431243B1 - Method for printing seal in uniform density without deteriorating lcd characteristics - Google Patents

Method for printing seal in uniform density without deteriorating lcd characteristics Download PDF

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Publication number
KR100431243B1
KR100431243B1 KR1019960031434A KR19960031434A KR100431243B1 KR 100431243 B1 KR100431243 B1 KR 100431243B1 KR 1019960031434 A KR1019960031434 A KR 1019960031434A KR 19960031434 A KR19960031434 A KR 19960031434A KR 100431243 B1 KR100431243 B1 KR 100431243B1
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South Korea
Prior art keywords
seal
substrate
real
printing method
mask
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KR1019960031434A
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Korean (ko)
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KR980010527A (en
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이윤복
김준섭
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엘지.필립스 엘시디 주식회사
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Priority to KR1019960031434A priority Critical patent/KR100431243B1/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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres
    • 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

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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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Liquid Crystal (AREA)

Abstract

PURPOSE: A seal printing method for an LCD is provided to realize the doping and adsorption of a seal material only on a seal pattern, thereby preventing the deterioration of the characteristics of an LCD due to fixing pin holes. CONSTITUTION: In a seal printing method for an LCD, a seal material(250) is doped on a desired seal pattern instead of the entire surface of a seal mask, by using a stamp having the seal pattern. As the stamp contacts a seal mask, the seal pattern of the stamp is doped to the seal mask. Even though the seal mask has defects, no pin holes are generated. Adsorption of the seal pattern is carried out by using a squeegee.

Description

액정표시장치의 실인쇄방법Actual printing method of liquid crystal display device

본 발명은 액정표시장치의 제조방법에 관한 것으로, 특히 액정표시장치의 실인쇄방법에 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 real printing method for a liquid crystal display device.

액정표시장치는 제 1 도에 도시된 바와 같이 스위칭소자인 박막트랜지스터(11) 및 화소전극(13)이 형성된 제1 기판(10)과, 컬러필터층(21) 및 공통전극(22)이 형성된 제2기판(20)이 스페이서(31)에 의해 일정한 갭을 두고서 서로 대향하고 있다. 그리고, 기판의 가장자리를 따라 형성된 실(seal)재(33)에 의해 양 기판이 서로 합착되어 있으며 합착된 양기판 사이에는 액정조성물(35)이 채워져 있다.As shown in FIG. 1, the liquid crystal display includes a first substrate 10 having a thin film transistor 11 and a pixel electrode 13, which are switching elements, and a color filter layer 21 and a common electrode 22. The two substrates 20 face each other with a constant gap by the spacers 31. The substrates are bonded to each other by a seal member 33 formed along the edge of the substrate, and the liquid crystal composition 35 is filled between the bonded substrates.

이러한 액정표시장치의 제조공정은 크게 제1기판의 형성, 제2기판의 형성, 제1, 2기판의 합착공정 및 액정주입공정으로 나눌 수 있는데, 제1,2기판의 합착공정은 실재의 인쇄와 실재의 경화공정으로 나눌 수 있다.The manufacturing process of the liquid crystal display device can be largely divided into the formation of the first substrate, the formation of the second substrate, the bonding process of the first and second substrates, and the liquid crystal injection process. And it can be divided into the actual curing process.

제1, 2 기판의 합착공정에서 실재의 인쇄방법은 스크린인쇄법과 디스펜서에 의한 인쇄법 등이 있다.The printing method of the real thing in the bonding process of a 1st, 2nd board | substrate includes the screen printing method and the printing method by a dispenser.

먼저, 스크린인쇄법에 의한 실재의 인쇄를 제 2 도를 이용하여 설명한다. 실패턴을 인쇄하기 위한 제1 기판, 혹은 제2기판 상에 실 마스크(200)를 놓는다. 닥터 블레이드(doctor blade : 210) 등을 이용하여 실마스크의 전체면에 걸쳐 실재(250)를 도포한다.(제 2 도 A, B) 실재로는 열경화성수지나 UV경화성수지가 사용된다. 이어서 스퀴즈(squeegee : 220) 등을 이용하여 실마스크의 전체면에 걸쳐 도포된 실재를 압착한다.(제 2 도 C, D)First, the printing of the real thing by the screen printing method is demonstrated using FIG. The seal mask 200 is placed on a first substrate or a second substrate for printing a failed turn. Using a doctor blade (210) or the like, the real material 250 is coated over the entire surface of the real mask (FIG. 2, A and B). As the real material, a thermosetting resin or a UV curing resin is used. Subsequently, a squeegee (220) or the like is used to squeeze the coated substance over the entire surface of the yarn mask (FIG. 2, C and D).

제 3 도는 디스펜서(dispenser)를 이용하여 실을 인쇄하는 방법을 나타내는 도면이다. 디스펜서 등의 실재를 산포할 수 있는 수단에 의해 UV경화성수지 또는 열경화성수지로 된 실재가 실마스크의 전체면에 뿌려진다. 도면부호 230은 실재 산포기인 디스펜서를, 250은 디스펜서에 의해 실마스크 상에 뿌려지는 실재를 나타낸다.3 is a diagram showing a method of printing a thread using a dispenser. By a means capable of dispersing the substance of a dispenser or the like, a substance made of UV-curable resin or thermosetting resin is sprayed on the entire surface of the yarn mask. Reference numeral 230 denotes a dispenser which is a real disperser, and 250 denotes a substance sprayed onto the yarn mask by the dispenser.

상기의 스크린인쇄법이나 디스펜서에 의한 실재 산포 등으로 실인쇄를 완료한 후 열이나 UV등에 의해 실재가 경화되어 양 기판이 서로 합착된다.After the actual printing is completed by the screen printing method or the actual dispersion by the dispenser, the actual materials are cured by heat or UV and the two substrates are bonded to each other.

그러나 상기의 실인쇄방법에 있어서, 스크린인쇄법의 경우에 실마스크에 결함이 존재하면 실마스크의 전체면에 걸쳐 도포된 실재가 실마스크의 결함에 의해 기판상의 실패턴이외의 영역에 존재한다. 즉, 고정핀홀이 발생하여 액정표시장치의 특성이 저하된다.However, in the yarn printing method described above, in the case of the screen printing method, if a defect exists in the yarn mask, a material applied over the entire surface of the yarn mask exists in a region other than the failure turn on the substrate due to the yarn defect. That is, fixed pin holes are generated to deteriorate the characteristics of the liquid crystal display.

또한 디스펜서를 이용한 실인쇄법의 경우 산포되는 실재가 균일한 밀도로 유지되기 어려워, 실패턴 상에 실재가 불충분하게 형성되면 기판의 합착정도가 떨어지는 문제점이 발생한다.In addition, in the case of the actual printing method using the dispenser, it is difficult to keep the dispersed material at a uniform density, and when the material is insufficiently formed on the failure turn, the degree of adhesion of the substrate may be lowered.

따라서, 본 발명의 목적은 실인쇄시의 핀홀을 방지할 수 있는 액정표시장치의 실인쇄방법을 제공하는 데 있다.Accordingly, an object of the present invention is to provide a thread printing method of a liquid crystal display device capable of preventing pinholes during yarn printing.

본 발명의 또 다른 목적은 실재가 균일한 밀도로 형성되어 기판의 합착정도가 높은 액정표시장치의 실인쇄방법을 제공하는데 있다.It is still another object of the present invention to provide a method of printing a liquid crystal display device in which a material is formed to a uniform density and thus a substrate has a high degree of adhesion.

이러한 목적을 달성하기 위한 본 발명의 액정표시장치의 실인쇄방법은 소정의 패턴으로 실재를 도포하는 공정과, 상기 도포된 실재를 압착하는 공정으로 이루어지는 것을 특징으로 한다.The actual printing method of the liquid crystal display device of the present invention for achieving the above object is characterized by consisting of the step of applying the actual material in a predetermined pattern, and the step of pressing the applied real material.

소정의 패턴, 즉 실패턴에만 실재를 도포하는 공정은 스탬프를 이용하는 것이 효과적이다. 물론 디스펜서를 사용하여 도포할 수도 있다.It is effective to use a stamp in a process of applying a substance only to a predetermined pattern, i.e., a failure turn. Of course, it can also be applied using a dispenser.

이하, 본 발명의 실시예에 따르는 액정표시장치의 실인쇄방법을 제 4 도를 이용하여 설명한다.Hereinafter, the actual printing method of the liquid crystal display according to the embodiment of the present invention will be described with reference to FIG.

[실시예]EXAMPLE

열경화성수지나 UV경화성수지 등의 실재를 실패턴 상에만 도포한다. 제 4A 도에 도시된 것과 같이 실패턴 상에만 실재가 도포될 수 있도록 하는 방법으로는 실패턴이 새겨진 스탬프를 실마스크의 실패터와 스탬프에 새겨진 실패턴이 서로 겹치도록 그 위치를 정렬한 후 스탬프와 실마스크를 서로 접촉시켜 스탬프의 실패턴에 존재하는 실재가 실마스크의 실패턴에 도포되도록 하는 방법과, 디스펜서의 산포정밀도를 높여 실패턴 상에만 실재를 도포하는 방법이 있다. 실패턴에 도포되는 실재는 실제의 실패턴보다 약간 넓은 폭으로 도포되는 것이 실인쇄의 안전성을 위해 바람직하다. 종래의 스크린인쇄법이나, 디스펜서를 이용하여 실인쇄를 행할 경우에는 실패턴을 포함한 실마스크의 전체면에 실재가 도포되었으나 상기의 실시예에서는 원하는 부분 즉, 실패턴 상에만 도포된다. 따라서, 마스크에 결함이 존재하더라도 실패턴상에만 실재가 도포되기 때문에 핀홀이 발생하지 않는다. 따라서, 실재로 인한 액정표시장치의 특성의 저하가 없다. 또 도포되는 실재의 밀도가 균일하여 기판간의 강한 접착이 유지된다.A substance such as a thermosetting resin or a UV curing resin is applied only on the failure turn. As shown in FIG. 4A, the seal can be applied only on the failed turn. As a result, the stamp of which the failure turn is engraved is aligned with the stamped parts of the seal mask and the failed turn engraved on the stamp. There is a method of contacting each other and the seal mask to each other so that the material present on the failing turn of the stamp is applied to the failing turn of the seal, and to increase the scattering accuracy of the dispenser and apply the seal only on the failing turn. It is preferable for the safety of yarn printing that the substance to be applied to the failed turn is applied to a slightly wider width than the actual failed turn. In the conventional screen printing method or in the case of the actual printing using the dispenser, the actual material is applied to the entire surface of the yarn mask including the failure turn, but in the above embodiment, only the desired part, that is, the failure turn is applied. Therefore, even if a defect exists in the mask, pinholes do not occur because the material is applied only on the failed turn. Therefore, there is no deterioration in the characteristics of the liquid crystal display device due to the existence. In addition, the density of the material to be applied is uniform, and strong adhesion between the substrates is maintained.

이어서, 제 4B, C 도와 같이 스퀴즈(420) 등을 이용하여 도포된 실재를 압착하여 실인쇄를 완성한다. 스탬프를 이용하여 실재를 실패턴 상에만 실재를 도포한 실인쇄의 경우에 있어서 실재의 압착도 실재의 실패턴 상에만 실재를 도포한 실인쇄의 경우에 있어서 실재의 압착도 실재의 도포과정에서 이루어질 수 있는데, 이경우 별도의 압착과정은 필요없다.Subsequently, the actual printed material is squeezed using the squeeze 420 or the like as in the fourth B and the C diagram to complete the yarn printing. In the case of the real printing in which the real is coated only on the failing turn with the stamp, the crimping of the real is also performed in the real printing in the case of the real printing in which the real is coated only on the failing turn of the real. In this case, there is no need for a separate pressing process.

스탬프 등을 이용하여 실패턴 상에만 실재를 도포하고, 스퀴즈 등으로 실패턴상에만 도포된 실재를 압착하여 실인쇄를 완성된 후 실재의 경화공정을 행하여 양기판을 합착한다.Using a stamp or the like to apply a real material only on the failed turn, and by pressing a real material coated only on the failed turn with a squeeze or the like to complete the real printing, a hardening process of the real material is performed to bond the two substrates together.

상기의 실인쇄방법은 스크린인쇄법으로 실재를 인쇄하여 많은 핀홀을 갖는 액정표시장치에 적용할 때 보다 큰 효과를 갖는다.The actual printing method has a greater effect when applied to a liquid crystal display device having a large number of pinholes by printing the actual material by the screen printing method.

본 발명에 의하면, 실 패턴 상에만 실재가 도포 및 압착됨으로 고정핀홀에 의한 액정표시장치의 특성저하가 없으며 실재가 균일한 밀도로 형성되어 양기판의 접착력도 양호하다.According to the present invention, since the real material is coated and compressed only on the real pattern, there is no deterioration in the characteristics of the liquid crystal display device by the fixing pin hole, and the real material is formed at a uniform density, so that the adhesion between the two substrates is good.

제 1 도는 액정표시장치의 개략적인 구성을 나타내는 단면도이다.1 is a cross-sectional view showing a schematic configuration of a liquid crystal display device.

제 2 도는 스크린인쇄법에 의한 실인쇄를 나타내는 공정도이다.2 is a process chart showing actual printing by the screen printing method.

제 3 도는 디스펜서를 이용한 실인쇄방법을 나타내는 공정도이다.3 is a flowchart showing a yarn printing method using a dispenser.

제 4 도는 본 발명의 실시예에 따른 실인쇄법을 나타내는 공정도이다.4 is a process chart showing the actual printing method according to an embodiment of the present invention.

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

10 : 제1기판 11 : 박막트랜지스터10: first substrate 11: thin film transistor

13 : 화소전극 21 : 컬러필터층13 pixel electrode 21 color filter layer

22 : 공통전극 20 : 제2기판22: common electrode 20: second substrate

31 : 스페이서 33, 250 : 실재31: spacer 33, 250: real

35 : 액정조성물 200, 400 : 실마스크35: liquid crystal composition 200, 400: seal mask

220, 420 : 스퀴즈 230 : 디스펜서220, 420: squeeze 230: dispenser

Claims (5)

실패턴 영역이 정의된 기판을 구비하는 단계와,Providing a substrate having a failed turn region defined therein; 상기 실패턴 영역과 대응된 소정의 패턴을 가지는 기구를 이용하여, 상기 기판의 실패턴 영역 상에 선택적으로 실재를 도포하는 단계와;Selectively applying a substance onto the failed turn area of the substrate using a mechanism having a predetermined pattern corresponding to the failed turn area; 상기 도포된 실재를 압착하는 단계Compressing the coated material 를 포함하는 액정표시장치의 실인쇄방법.Actual printing method of the liquid crystal display device comprising a. 제 1 항에 있어서,The method of claim 1, 상기 소정의 패턴을 가지는 기구는 스탬프인 액정표시장치의 실인쇄방법.And the mechanism having the predetermined pattern is a stamp. 제 1 항에 있어서,The method of claim 1, 상기 실재를 도포하는 단계에서, 상기 기판과 소정의 패턴을 가지는 기구 사이에는, 상기 실패턴과 대응된 패턴을 가지는 실마스크가 개재되고, 상기 실마스크의 패턴과 상기 기구의 소정의 패턴을 위치 정렬하는 단계를 포함하는 액정표시장치의 실인쇄방법.In the step of applying the actual material, a thread mask having a pattern corresponding to the failure turn is interposed between the substrate and the mechanism having a predetermined pattern, and the patterns of the thread mask and the predetermined pattern of the apparatus are aligned. Real printing method of a liquid crystal display device comprising the step of. 제 1 항에 있어서,The method of claim 1, 상기 소정의 패턴은, 실질적인 실패턴보다 소정의 범위내에서 넓은 폭을 가지는 액정표시장치의 실인쇄방법.And the predetermined pattern has a wider width within a predetermined range than a substantially failed turn. 제 1 항에 있어서,The method of claim 1, 상기 도포된 실재를 압착하는 단계 다음에는, 상기 실재의 경화공정을 행하여, 상기 기판과 또 하나의 기판을 합착하는 공정이 포함되는 액정표시장치의 실인쇄방법.And compressing the coated real material, followed by performing a hardening process of the real material, thereby bonding the substrate and another substrate to each other.
KR1019960031434A 1996-07-30 1996-07-30 Method for printing seal in uniform density without deteriorating lcd characteristics KR100431243B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930013814A (en) * 1991-12-12 1993-07-22 이헌조 Manufacturing method of liquid crystal display device
KR940002640A (en) * 1992-07-22 1994-02-17 이헌조 Liquid crystal display device manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930013814A (en) * 1991-12-12 1993-07-22 이헌조 Manufacturing method of liquid crystal display device
KR940002640A (en) * 1992-07-22 1994-02-17 이헌조 Liquid crystal display device manufacturing method

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