KR100244025B1 - A method of liquid crystal display device - Google Patents

A method of liquid crystal display device Download PDF

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KR100244025B1
KR100244025B1 KR1019970032986A KR19970032986A KR100244025B1 KR 100244025 B1 KR100244025 B1 KR 100244025B1 KR 1019970032986 A KR1019970032986 A KR 1019970032986A KR 19970032986 A KR19970032986 A KR 19970032986A KR 100244025 B1 KR100244025 B1 KR 100244025B1
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alignment
liquid crystal
substrate
alignment material
crystal cell
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KR1019970032986A
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KR19990010267A (en
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김우현
안선홍
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구본준
엘지.필립스 엘시디주식회사
론 위라하디락사
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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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • 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
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133723—Polyimide, polyamide-imide
    • 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
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133784—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by rubbing
    • 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
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

시야각특성이 우수한 액정표시소자의 액정셀을 제공한다.A liquid crystal cell of a liquid crystal display device having excellent viewing angle characteristics is provided.

액정표시소자의 액정셀 제조방법은 제1 및 제2기판을 제공하는 단계와, 상기 제1기판상에 제1수평배향물질을 도포한 후, 경화하여 제1배향막을 형성하는 단계와, 패턴화한 인쇄판을 사용하여 상기 제1배향막상에 제2수평배향물질을 도포하여, 상기 제1배향막의 배향방향과 평면상에서 수직한 배향방향을 가지는 제2배향막을 형성하는 단계와, 상기 제1기판의 제1 및 제2배향막을 동시에 배향하는 단계와, 상기 제2기판상에, 수직배향물질을 인쇄하여 수직한 배향방향을 갖는 제3배향막을 형성하는 단계와, 그리고 상기 제1기판과 제2기판 사이에 액정층을 형성하는 단계로 이루어진다.A method of manufacturing a liquid crystal cell of a liquid crystal display device includes providing a first and a second substrate, applying a first horizontal alignment material on the first substrate, and curing the first alignment layer to form a first alignment layer. Applying a second horizontal alignment material on the first alignment film by using a printing plate to form a second alignment film having an alignment direction perpendicular to the alignment direction of the first alignment film and a plane of the first substrate; Orienting the first and second alignment films simultaneously; forming a third alignment film having a vertical alignment direction by printing a vertical alignment material on the second substrate; and forming the first and second substrates. Forming a liquid crystal layer in between.

Description

액정표시소자의 액정셀 제조방법Liquid crystal cell manufacturing method of liquid crystal display device

본 발명은 HAN형 액정표시소자의 액정셀에 관한 것으로, 특히, 하나의 화소영역이 2-도메인으로 분할된 액정셀에 관한 것이다.The present invention relates to a liquid crystal cell of a HAN type liquid crystal display device, and more particularly, to a liquid crystal cell in which one pixel region is divided into two-domains.

HAN형 액정표시소자는 액정의 유전이방성에 의한 액정분자의 배열 변화를 근거로 액정분자의 복굴절율을 변화시켜 액정표시소자의 표시를 행하는 ECB방식 액정표시소자의 형태로서, 비교적 낮은 인가전압으로 동작하고, 고속의 응답성을 갖고 있어 개인 휴대형 멀티미디어 디스플레이에 적합하다. 그러나, 단일 도메인의 HAN형 액정표시소자는 시야각이 좁고, 색특성이 좋지 않다는 단점을 갖고 있다.The HAN type liquid crystal display device is an ECB type liquid crystal display device that displays the liquid crystal display device by changing the birefringence of the liquid crystal molecules based on the change in the arrangement of the liquid crystal molecules due to the dielectric anisotropy of the liquid crystal. It has high speed response and is suitable for personal portable multimedia display. However, a single domain HAN type liquid crystal display device has disadvantages of a narrow viewing angle and poor color characteristics.

상기한 문제점을 해결하기 위하여 근래에는 하나의 화소영역을 2개 이상의 도메인으로 분할한 액정셀 즉, 멀티도메인 액정셀 및 그 제조방법에 관한 진보된 기술이 등장하고 있다.In order to solve the above problems, recently, advanced technologies related to a liquid crystal cell, that is, a multi-domain liquid crystal cell in which one pixel area is divided into two or more domains, and a method of manufacturing the same have emerged.

도 1a는 종래의 2-도메인 HAN형 액정표시소자에서 단위 액정셀의 구조를 나타내는 도면으로서, 이러한 액정셀은 수직배향제가 인쇄된 상판(10)과, 2개의 도메인(A, B)으로 분할되어 각 영역이 대칭으로 수평배향된 하판(11)과, 상기 상판(10)과 하판(11) 사이에서 하이브리드 배향된 액정(12)으로 이루어진다.FIG. 1A illustrates a structure of a unit liquid crystal cell in a conventional 2-domain HAN type liquid crystal display device. The liquid crystal cell is divided into a top plate 10 on which a vertical alignment agent is printed, and two domains A and B. Each region consists of a lower plate 11 symmetrically oriented horizontally, and a liquid crystal 12 hybridly oriented between the upper plate 10 and the lower plate 11.

도 1b는 상기 도 1a의 도메인(A, B)에서 각 액정방향자의 방향을 나타내는 도면으로서, 각 도메인(A, B)에서 각 방향자는 방위각 0°, 180°의 대칭방향으로 존재한다. 이것은 구조 자체의 보상효과에 의해 좌우방향 대칭인 개선된 시야각특성을 제공하나, 상하방향의 시야각특성에는 별다른 효과를 나타내지 못한다.FIG. 1B is a diagram illustrating the direction of each liquid crystal director in the domains A and B of FIG. 1A, and in each domain A and B, each director exists in a symmetric direction of 0 ° and 180 °. This provides an improved viewing angle characteristic that is symmetrical in the left and right directions by the compensating effect of the structure itself, but has no effect on the viewing angle characteristic in the vertical direction.

도 2a∼f는 도 1의 액정셀의 제조방법을 나타내는 도면으로서, 먼저 도 2a에 나타내듯이 기판(11) 상에 폴리이미드와 같은 고분자물질을 도포하고 경화하여 배향막(13)을 형성한 후, 도 2b에 나타내듯이 부드러운 천과 같은 러빙롤러(rubbing roller)(14)로 러빙을 실시하여 첫번째 배향방향을 결정한다. 그 후, 도 2c에 나타내듯이 상기 배향막상에 포토레지스트(15)를 도포하고, 도 2d에 나타내듯이 마스크(미도시)로 상기 포토레지스트막을 블로킹한 후, 광을 조사하여 균일한 크기의 차단부(16)를 형성한다. 이어서, 도 2e에 나타내듯이 러빙롤러(14)로 러빙을 실시하여 두번째 배향방향을 결정하고 상기 차단부(16)를 에칭하면, 도 2f에 나타내듯이 상기 기판(11)상에는 각기 다른 배향방향 영역(S, S')을 갖는 하나의 배향막(13)이 형성된다. 또한, 도면으로 나타내지는 않았지만, 상기 기판(11)과 상응하는 다른 기판에 수직배향방향을 갖는 배향막을 형성한 후, 두 배향막 사이에 액정을 주입하면 액정셀이 완성된다.2A to 2F illustrate a method of manufacturing the liquid crystal cell of FIG. 1. First, as shown in FIG. 2A, a polymer material such as polyimide is coated and cured on the substrate 11 to form an alignment layer 13. As shown in Fig. 2B, rubbing is performed with a rubbing roller 14 such as a soft cloth to determine the first orientation direction. Thereafter, a photoresist 15 is applied onto the alignment film as shown in FIG. 2C, and the photoresist film is blocked with a mask (not shown) as shown in FIG. 2D, and then light is irradiated to block a portion having a uniform size. (16) is formed. Then, as shown in FIG. 2E, rubbing is performed with the rubbing roller 14 to determine the second orientation direction, and the blocking portion 16 is etched. As shown in FIG. 2F, different orientation direction regions ( One alignment film 13 having S and S 'is formed. Although not shown in the drawings, an alignment film having a vertical alignment direction is formed on another substrate corresponding to the substrate 11, and then a liquid crystal cell is completed by injecting a liquid crystal between the two alignment layers.

그러나, 상기한 도 2a∼f를 따르는 제조방법은, 각각의 영역에 대하여 러빙을 실시해야 하기 때문에 배향막이 손상될 염려가 있으며, 에칭 및 사진식각공정이 매우 까다롭다.However, in the above manufacturing method according to Figs. 2A to F, since the rubbing should be performed on each area, the alignment film may be damaged, and the etching and photolithography processes are very difficult.

본 발명은 상기한 종래 기술의 문제점을 감안하여 이루어진 것으로서, 에칭 및 사진식각공정이 불필요한 2-도메인 HAN형 액정표시소자의 액정셀 제조방법을 제공하는 것이다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and provides a liquid crystal cell manufacturing method of a 2-domain HAN type liquid crystal display device, which requires no etching and photolithography processes.

본 발명의 다른 목적은, 상기한 액정셀을 각 도메인내의 액정방향자의 방향을 서로 수직으로 형성하는 것에 의해 상하방향의 시야각특성 뿐만 아니라 좌우방향의 시야각특성을 증가시키는 것이다.Another object of the present invention is to increase the viewing angle characteristic in the vertical direction as well as the viewing angle characteristic in the left and right directions by forming the liquid crystal cell in the above-mentioned direction of the liquid crystal director in each domain perpendicularly.

상기한 목적을 달성하기 위해, 본 발명에 따른 액정셀의 제조방법은, 기판상에 제1수평배향물질을 도포하고 경화하여 제1배향막을 형성한 후, 패턴화한 인쇄판을 사용하여 러빙방향에 대해 수직한 배향방향을 갖는 제2수평배향물질을 도포하고 경화하여 제2배향막을 형성한다. 그후, 상기 기판전체에 대하여 러빙을 실시하면, 제1배향막이 형성된 영역은 러빙방향으로 배향방향이 결정되고, 제2배향막이 인쇄된 영역은 러빙방향과 수직한 방향으로 배향방향이 결정된다. 도면으로 나타내지는 않았지만, 상기 기판과 상응하는 다른 기판에 수직배향방향을 갖는 배향막을 형성한 후, 두 배향막 사이에 액정을 주입하면 액정셀이 완성된다.In order to achieve the above object, the manufacturing method of the liquid crystal cell according to the present invention, by coating and curing the first horizontal alignment material on the substrate to form a first alignment film, and then in the rubbing direction using a patterned printing plate A second horizontal alignment material having an orientation perpendicular to the second coating layer is applied and cured to form a second alignment layer. Thereafter, when the entire substrate is subjected to rubbing, the alignment direction is determined in the rubbing direction in the region where the first alignment film is formed, and the alignment direction is determined in the direction perpendicular to the rubbing direction in the region where the second alignment film is printed. Although not shown, a liquid crystal cell is completed by forming an alignment layer having a vertical alignment direction on another substrate corresponding to the substrate, and then injecting liquid crystal between the two alignment layers.

도 1a는, 종래의 2-도메인 HAN(Hybrid Aligned Nematic)형 액정표시소자에서 단위 액정셀의 구조를 나타내는 개략적인 도면.1A is a schematic diagram showing the structure of a unit liquid crystal cell in a conventional two-domain HAN (Hybrid Aligned Nematic) type liquid crystal display device.

도 1b는, 도 1a의 각 도메인에서 액정방향자의 방향을 나타내는 도면.FIG. 1B is a view showing the direction of the liquid crystal director in each domain of FIG. 1A; FIG.

도 2a∼f는, 도 1의 액정셀의 제조방법을 나타내는 도면.2A to 2F illustrate a method of manufacturing the liquid crystal cell of FIG. 1.

도 3a∼e는, 본 발명에 따른 2-도메인 HAN형 액정표시소자의 단위 액정셀의 제조방법을 나타내는 개략적인 도면.3A to 3E are schematic diagrams showing a manufacturing method of a unit liquid crystal cell of a 2-domain HAN type liquid crystal display device according to the present invention;

도 4a는, 상기 도 3a∼e의 방법에 따라 제조된 단위 액정셀의 구조를 나타내는 개략적인 도면.4A is a schematic diagram showing the structure of a unit liquid crystal cell manufactured according to the method of FIGS. 3A to 3E.

도 4b는, 도 4a의 각 도메인에서 액정방향자의 방향을 나타내는 도면.FIG. 4B is a view showing the direction of the liquid crystal director in each domain of FIG. 4A; FIG.

- 도면의 주요 부분에 대한 부호의 설명 --Explanation of symbols for the main parts of the drawing-

111 : 기판 112 : 액정111 substrate 112 liquid crystal

113 : 제1배향막 114 : 러빙롤러113: first alignment film 114: rubbing roller

117 : 패턴화한 인쇄판 118 : 제2배향막117: patterned printing plate 118: second alignment film

이하, 본 발명의 바람직한 실시예를 도면을 참조하여 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

도 3a∼e는 본 발명에 따른 액정셀의 제조방법을 나타내는 도면으로서, 먼저 도 3a에 나타내듯이 기판(111) 상에 폴리이미드 또는 그와 유사한 고분자물질을 도포하고 경화하여 제1배향막(113)을 형성한 후, 도 3b에 나타내듯이 패턴화한 인쇄판(117)을 사용하여 러빙방향에 대하여 수직한 배향방향을 갖는 제2수평배향물질을 상기 제1배향막상에 도포한다. 그 결과, 도 3c에 나타내듯이 동일한 러빙조건에서 상이한 배향방향을 갖는 제2배향막(118)이 형성된다. 그 후, 도 3d에 나타내듯이 상기 기판(111) 전체에 대하여 러빙롤러(114)로 러빙을 실시하면, 도 3e에 나타내듯이 상기 기판 상에는 각기 서로 다른 배향방향을 갖는 제1(113) 및 제2배향막(118)이 형성된다. 또한, 도면으로 나타내지는 않았지만, 상기 기판(111)과 상응하는 다른 기판에 수직배향방향을 갖는 배향막을 형성한 후, 두 배향막 사이에 액정을 주입하면 본 발명에 따른 액정셀이 완성된다.3A to 3E illustrate a method of manufacturing a liquid crystal cell according to the present invention. First, as shown in FIG. 3A, a polyimide or a similar polymer material is coated and cured on a substrate 111 to form a first alignment layer 113. After forming the film, a second horizontal alignment material having an alignment direction perpendicular to the rubbing direction is applied onto the first alignment film using the patterned printing plate 117 as shown in FIG. 3B. As a result, as shown in Fig. 3C, a second alignment film 118 having different alignment directions under the same rubbing conditions is formed. Then, as shown in FIG. 3D, when the rubbing roller 114 is applied to the entire substrate 111, the first 113 and the second having the different orientation directions on the substrate as shown in FIG. 3E. An alignment film 118 is formed. In addition, although not shown in the drawings, after forming an alignment film having a vertical alignment direction on the other substrate corresponding to the substrate 111, the liquid crystal cell is injected between the two alignment films to complete the liquid crystal cell according to the present invention.

상기한 방법에서 배향의 실시는 폴리실록산을 배향물질로 사용하여 광(예를 들면 자외선)을 조사하여 실시하는 것이 가능한데, 이때 사용되는 빛은 비편광된 또는 편광된 빛이고, 상기 편광된 빛은 다시 부분편광된 빛 또는 선형편광된 빛이 가능하며 이러한 빛을 적어도 1회조사하여 실시한다.In the above-described method, the alignment may be performed by irradiating light (for example, ultraviolet rays) using polysiloxane as an alignment material, wherein the light used is unpolarized or polarized light, and the polarized light is again Partially polarized light or linearly polarized light is possible, and the light is irradiated at least once.

도 4a는 상기 도 3a∼e의 방법에 따라 제조된 단위 액정셀의 구조를 나타내는 개략적인 도면으로서, 이러한 액정셀은 수직배향제가 인쇄된 상판(110)과, 2개의 도메인(A', B')으로 분할되어 각 영역의 액정방향자의 방향이 서로 수직하게 배향된 하판(111)과, 상기 상판(110)과 하판(111) 사이에서 하이브리드 배향된 액정(112)으로 이루어진다.4A is a schematic diagram showing the structure of a unit liquid crystal cell manufactured according to the method of FIGS. 3A to 3E. The liquid crystal cell includes a top plate 110 on which a vertical alignment agent is printed, and two domains A 'and B'. The liquid crystal director of the liquid crystal director is divided into a lower plate 111 is vertically oriented perpendicular to each other, and the liquid crystal 112 is a hybrid alignment between the upper plate 110 and the lower plate 111.

도 4b는 상기 도 4a의 도메인(A', B')에서 각 액정방향자의 방향을 나타내는 도면으로서, 각 도메인(A', B')에서 각 방향자는 서로 수직한 방향으로 존재한다. 즉, 수평배향 틸트(tilt)의 방위각이 0°, 90°의 차이를 보인다.FIG. 4B is a diagram illustrating a direction of each liquid crystal director in the domains A 'and B' of FIG. 4A, and each director exists in a direction perpendicular to each other in each of the domains A 'and B'. That is, the azimuth angle of the horizontal orientation tilt is different between 0 ° and 90 °.

또한, 도면으로 나타내지는 않았지만, 상기한 본 발명에 따른 액정셀의 상부에 보상필름을 적절하게 사용하면 더욱 증대된 시야각 특성을 얻을 수 있고, 상판과 하판에 편광판을 부착하여 투과형으로 사용하거나, 상판에는 편광판을 하판에는 반사전극을 설치하여 반사형으로 사용할 수 있다.In addition, although not shown in the drawings, when the compensation film is properly used on the upper part of the liquid crystal cell according to the present invention, an increased viewing angle characteristic can be obtained, and a polarizing plate is attached to the upper and lower plates to be used as a transmissive type, or an upper plate. In the polarizing plate and the reflecting electrode on the lower plate can be used as a reflection type.

본 발명에 따른 액정표시소자의 액정셀 제조방법은, 종래의 에칭 및 식각공정을 사용하지 않고, 1회의 러빙공정만으로 하나의 화소영역을 2도메인 형성하는 것이 가능하다.In the liquid crystal cell manufacturing method of the liquid crystal display device according to the present invention, it is possible to form two domains of one pixel region by only one rubbing process without using a conventional etching and etching process.

또한, 본 발명에 따르면 각 도메인내의 액정방향자의 방향을 서로 수직하게 형성하는 것에 의해, 액정표시소자에 대하여 상하방향 및 좌우방향의 시야각특성을 향상시키는 것이 가능하고, 2-도메인의 상호 보상적인 작용으로 시야각외에 색특성이 개선된다.Further, according to the present invention, by forming the directions of the liquid crystal directors in the respective domains perpendicular to each other, it is possible to improve the viewing angle characteristic in the up-down direction and the left-right direction with respect to the liquid crystal display device, and the two-domain mutually compensatory action. This improves the color characteristics in addition to the viewing angle.

Claims (12)

제1 및 제2기판을 제공하는 단계와,Providing first and second substrates, 상기 제1기판 상에 제1배향물질을 도포한 후 경화하여 제1배향막을 형성하는 단계와,Applying a first alignment material on the first substrate and curing the first alignment material to form a first alignment layer; 패턴화한 인쇄판을 사용하여 상기 제1배향막 상에 제2배향물질을 도포하여 제2배향막을 형성하는 단계와,Forming a second alignment layer by coating a second alignment material on the first alignment layer using a patterned printing plate; 상기 제1기판의 제1 및 제2배향막을 동시에 배향하는 단계와,Simultaneously orienting the first and second alignment layers of the first substrate; 상기 제2기판 상에, 제3배향물질을 도포하여 상기 제1 및 제2배향막의 배향방향과 수직한 배향방향을 갖는 제3배향막을 형성하는 단계와, 그리고Applying a third alignment material on the second substrate to form a third alignment film having an alignment direction perpendicular to the alignment directions of the first and second alignment layers; and 상기 제1기판과 제2기판 사이에 액정층을 형성하는 단계로 이루어진 액정표시소자의 액정셀 제조방법.A liquid crystal cell manufacturing method of a liquid crystal display device comprising the step of forming a liquid crystal layer between the first substrate and the second substrate. 제1항에 있어서, 상기 제1배향물질 및 제2배향물질이 수평배향물질이고, 제3배향물질이 수직배향물질인 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The liquid crystal cell manufacturing method of claim 1, wherein the first alignment material and the second alignment material are horizontal alignment materials, and the third alignment material is a vertical alignment material. 제1항에 있어서, 상기 제1배향물질 및 제2배향물질이 수직배향물질이고, 제3배향물질이 수평배향물질인 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The method of claim 1, wherein the first alignment material and the second alignment material are vertical alignment materials, and the third alignment material is a horizontal alignment material. 제1항에 있어서, 상기 제1배향막과 제2배향막의 배향방향이 평면상에서 서로 수직한 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The method of claim 1, wherein the alignment directions of the first alignment layer and the second alignment layer are perpendicular to each other on a plane. 제1항에 있어서, 상기 제1배향물질 또는 제2배향물질이 폴리이미드인 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The method of claim 1, wherein the first alignment material or the second alignment material is polyimide. 제1항에 있어서, 상기 제1 및 제2, 또는 제3배향막 중 적어도 어느 하나가 러빙법에 의해 형성되는 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The method of claim 1, wherein at least one of the first, second, and third alignment layers is formed by a rubbing method. 제1항에 있어서, 상기 제1배향물질 또는 제2배향물질이 광배향물질인 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The liquid crystal cell manufacturing method of claim 1, wherein the first alignment material or the second alignment material is a photo alignment material. 제7항에 있어서, 상기 광배향물질이 폴리실록산인 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The method of claim 7, wherein the optical alignment material is polysiloxane. 제1항에 있어서, 상기 제1 및 제2, 또는 제3배향막 중 적어도 어느 하나가 광배향법에 의해 형성되는 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The method of claim 1, wherein at least one of the first, second, and third alignment layers is formed by a photo alignment method. 제9항에 있어서, 상기 광이 자외선인 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.The method of claim 9, wherein the light is ultraviolet light. 제9항에 있어서, 상기 광은 편광되거나 또는 편광되지 않은 광인 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.10. The method of claim 9, wherein the light is polarized light or non-polarized light. 제11항에 있어서, 상기 편광된 광이 부분편광 또는 선편광된 광인 것을 특징으로 하는 액정표시소자의 액정셀 제조방법.12. The method of claim 11, wherein the polarized light is partially polarized light or linearly polarized light.
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