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KR100246921B1 - Color liquid crystal display device - Google Patents

Color liquid crystal display device Download PDF

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Publication number
KR100246921B1
KR100246921B1 KR1019930001569A KR930001569A KR100246921B1 KR 100246921 B1 KR100246921 B1 KR 100246921B1 KR 1019930001569 A KR1019930001569 A KR 1019930001569A KR 930001569 A KR930001569 A KR 930001569A KR 100246921 B1 KR100246921 B1 KR 100246921B1
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KR
South Korea
Prior art keywords
liquid crystal
crystal display
display device
color
polarizing plate
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KR1019930001569A
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Korean (ko)
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KR940020148A (en
Inventor
원민영
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손욱
삼성에스디아이주식회사
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Priority to KR1019930001569A priority Critical patent/KR100246921B1/en
Publication of KR940020148A publication Critical patent/KR940020148A/en
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Publication of KR100246921B1 publication Critical patent/KR100246921B1/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
    • G02F1/133—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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes

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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)
  • Liquid Crystal (AREA)

Abstract

본 발명은 액정표시소자(LCD;Liquid Crystal Display)에 관한 것으로서, 투명전극과 배향막이 형성된 상하부 기판이 조합되고 그 사이에 액정이 수평 배향된 구동용 셀에 있어서 LCD 패널 내에 형성되는 색필터층을 제거하는 대신 종래 편광판이 형성되던 위치의 적어도 어느 한쪽에 칼라 편광판을 부착하므로써 LCD의 제조 프로세스를 간략화 시킬수 있고 표시품질을 향상시킬 수 있는 칼라 액정표시소자를 실현할 수 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display (LCD), wherein the upper and lower substrates on which a transparent electrode and an alignment layer are formed are combined, and a color filter layer formed in an LCD panel is removed in a driving cell in which a liquid crystal is horizontally aligned therebetween. Instead, by attaching the color polarizing plate to at least one of the positions where the polarizing plate is formed in the related art, a color liquid crystal display device which can simplify the LCD manufacturing process and improve display quality can be realized.

Description

칼라 액정표시소자Color liquid crystal display device

제1도는 종래 기술에 따른 칼라 액정표시소자의 구조를 나타내는 단면도.1 is a cross-sectional view showing the structure of a color liquid crystal display device according to the prior art.

제2도는 본 발명에 따른 칼라 액정표시소자의 구조를 나타내는 단면도.2 is a cross-sectional view showing the structure of a color liquid crystal display device according to the present invention.

본 발명은 액정표시소자(LCD ; Liquid Crystal Display)에 관한 것으로서, 보다 상세하게는 액정표시소자 내에 형성되는 칼라 필터 패턴을 스킵하는 대신 칼라 편광판을 종래 편광판의 위치에 부착하므로써 LCD 제조 프로세스를 간략화 시킬수 있는 액정표시자에 관한 것이다.The present invention relates to a liquid crystal display (LCD), and more particularly, it is possible to simplify the LCD manufacturing process by attaching a color polarizer to a position of a conventional polarizer instead of skipping a color filter pattern formed in the liquid crystal display. It relates to a liquid crystal display.

최근 OA기기나 휴대용 소형 TV등의 보급에 따라 이제까지의 전자디스플레이 장치로 브라운관(CRT) 대신에 액정 디스플레이(LCD), 일렉트로일루미너 센서(EL)소자, 플라즈마, 디스플레이(PDP), 발광 다이오드(LED), 형광 표시관(VED) 등의 연구가 활발히 추진되고 일부는 실용화되고 있다.Recently, with the spread of OA devices and portable small TVs, LCD displays, electroluminescence sensor (EL) devices, plasmas, displays (PDP), and light emitting diodes (LEDs) have been replaced by CRTs. ), Researches on fluorescent display tubes (VED), etc. are actively promoted, and some have been put into practical use.

그중에서도 액정 디스플레이는 극도로 경량으로 박형, 저가 저소비 전력구동으로 집적회로와의 정합성이 좋은 등의 특징을 가져 랩 톱(LAP TOP COMPUTER)나 포켓 컴퓨터(POCKET COMPUTER)의 표시외에 차량 적재용, 칼라TV 화상용으로서 그 용도를 급속하게 확대하고 있다.Among them, the liquid crystal display is extremely lightweight, thin, low-cost, low power consumption, and has good compatibility with integrated circuits. Its use is rapidly expanding for image use.

또한 LCD에 사용되고 있는 칼라필터는 3-5인치가 실용화되어 있고, 10-14인치가 개발중이며 대형화를 향해 급속히 진행되고 있다.In addition, the color filter used in the LCD is 3-5 inches in practical use, 10-14 inches are under development, and is rapidly progressing toward larger size.

CRT와 마찬가지로 칼라필터 또한 빛의 삼원색(R, G, B)을 화소의 기본단위로 하고 동3색의 세기조절, 즉 통과하는 빛의 강도를 제어하므로써 칼라 실현하는 기술이다.Like CRT, color filter is a technology that realizes color by using three primary colors (R, G, B) of light as the basic unit of pixels and controlling the intensity of the same three colors, that is, the intensity of light passing through.

이러한 일반적인 액정표시소자는 도전성판재 2매를 평행하게 배치하고 그 사이에 액정을 주입하여 전기 광학적효과로 문자, 숫자, 기타 임의의 도안을 표시하도록 되어 있다.In this general liquid crystal display device, two conductive plate members are arranged in parallel, and a liquid crystal is injected therebetween to display letters, numbers, and other arbitrary patterns with an electro-optic effect.

상기 액정표시소자는 상하 유리기판의 일측면에 각각 투명전극을 형성하고 그 위에 배향막을 형성함과 아울러 상부 유리기판 또는 하부 유리기판에 시일을 프린트하고, 하부 유리기판에 스페이서를 산포하여 상기 상하부 유리기판을 마주보는 상태로 조합한 다음, 이들 상하부 유리기판 사이에 액정을 주입한 후, 주입구를 밀봉하는 방식으로 제조하고 있다.The liquid crystal display device forms a transparent electrode on one side of the upper and lower glass substrates, forms an alignment layer thereon, prints a seal on the upper glass substrate or the lower glass substrate, and spreads a spacer on the lower glass substrate, thereby forming the upper and lower glass substrates. After combining the substrates facing each other, the liquid crystal is injected between the upper and lower glass substrates, and then the injection holes are sealed.

상기 공정으로 제조된 액정표시소자는 유전 이방성을 갖는 물질이 전계상에 놓일때 배향되는 성질을 이용하여 화상표시를 하게 한 것으로서, 투면전극과 배향막이 적층된 상하부 유리기판의 주위를 밀봉재로 둘러쌓아 만들어진 액정셀에 클레스테릭 또는 네마틱 액정을 주입한 구조로 되어있다.The liquid crystal display device manufactured by the above process is used to display an image using a property that is oriented when a material having dielectric anisotropy is placed on an electric field. The liquid crystal display device surrounds the upper and lower glass substrates on which the projection electrode and the alignment layer are stacked with a sealing material. The liquid crystal cell is made of a structure injecting a clesteric or nematic liquid crystal.

상하부 유리기판 상에 형성된 투명전극으로 전압이 인가되어 그 사이로 전계가 형성될때, 내부에 수용되어 있는 액정은 유전 이방성에 의해 배향막이 설정한 방향으로 뒤틀려서 외부의 빛을 분자축 방향으로 굴절시키게 된다. 그 결과로 액정의 디스플레이 영역에서 뒤틀린 액정이 존재하는 부분은 그렇지 않은 부분과는 다른 색상을 띄게되어 화상표시를 가능케 한다.When a voltage is applied to the transparent electrodes formed on the upper and lower glass substrates and an electric field is formed therebetween, the liquid crystal contained therein is distorted in the direction set by the alignment layer due to dielectric anisotropy, thereby refracting external light in the direction of the molecular axis. . As a result, the portion in which the distorted liquid crystal is present in the display area of the liquid crystal has a color different from that of the liquid crystal, thereby enabling image display.

이와 관련된 종래의 액정표시소자에 관하여 제1도를 참조하여 설명한다.A related art liquid crystal display device will be described with reference to FIG.

제1도는 종래 기술에 따른 액정표시소자의 구조를 도시한 단면도를 도시한 것으로서 상기 도면에서 알수 있듯이 상기 액정표시소자는 상부기판(1)상에 트랜지스터의 열화를 방지하기 위해 형성된 블랙 매트릭스(3)와, 상기 블랙 매트릭스(3) 사이에 상기 블랙 매트릭스에 일부 중첩되게 각각 분리되어 순차적으로 형성된 제1 내지 제3색 필터층(4-1), (4-2), (4-3)과, 상기 상부기판(1)과 하부기판(2)상의 내면에 각각 ITO전극(5)과 이와 대향되는 ITO전극(5′)이 형성되고, 상기 전극(5),(5′)상에 각각 배향막이 형성되며, 상기 상부기판(1)과 하부기판(2)의 외면에 편광판(8)이 각각 형성되며, 상기 상하부기판(1),(2)의 외면과 편광판(8) 사이에 위상차판(7)이 형성되며, 이와같이 형성된 대향된 상하부 유리기판(1),(2) 사이에 액정이 봉입되어 상기한 전극(5),(5′)에 인가되는 전압의 유,무에 따라 트위스트 하는 것에 의해 소정 패턴이 나타나는 구조로 구성되어 있다.FIG. 1 is a cross-sectional view showing the structure of a liquid crystal display device according to the prior art. As can be seen from the drawing, the liquid crystal display device has a black matrix 3 formed on the upper substrate 1 to prevent degradation of a transistor. And first to third color filter layers 4-1, (4-2), and (4-3), which are sequentially separated from the black matrix 3 to be partially overlapped with the black matrix, and are sequentially formed. An ITO electrode 5 and an ITO electrode 5 'opposed thereto are formed on inner surfaces of the upper substrate 1 and the lower substrate 2, respectively, and an alignment layer is formed on the electrodes 5 and 5', respectively. Polarizers 8 are formed on the outer surfaces of the upper substrate 1 and the lower substrate 2, respectively, and a phase difference plate 7 is formed between the outer surfaces of the upper and lower substrates 1 and 2 and the polarizer 8. The liquid crystal is sealed between the upper and lower glass substrates (1) and (2) formed as described above and applied to the electrodes (5) and (5 '). Has a structure in which a predetermined pattern appears by twisting with or without voltage.

상기한 방식으로 구성된 액정표시소자는 액정 분자가 상하로 트위스트(Twist)된 상태에서 착색되는 문제를 해결코져 구동용 LCD의 트위스트 방향과 반대 방향으로 트위스트된 LCD를 사용하여 착색을 제거하거나 또는 고분자 수지로 된 위상차판을 사용하여 착색을 제거하여 왔으며, 종래 B/W SIN LCD의 경우에는 액정표시소자 내에 칼라 필터층을 삽입시켜 화면의 칼라화를 실현시켰기 때문에 LCD 제작시 색 필터층을 따로 형성시켜야 하는 제조공정상의 불편함이 뒤 따랐었다.The liquid crystal display device configured in the above manner solves a problem in which the liquid crystal molecules are colored in a twisted state in a twisted state. The LCD is twisted in a direction opposite to the twist direction of the driving LCD to remove color or polymer resin. Coloring has been removed using a phase difference plate, and in the case of conventional B / W SIN LCD, color filter layer is inserted into the liquid crystal display device to realize the coloration of the screen. Normal discomfort followed.

이에 본 발명은 상기와 같은 점을 감안하여 이루어진 것으로, LCD 패널내의 색 필터층을 제거하는 대신 종래 편광판의 위치에 칼라 편광판을 부착하므로써 LCD의 제조 프로세서를 간략화 시킬수 있고 표시품질을 향상시킬 수 있는 액정표시소자를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above. Instead of removing the color filter layer in the LCD panel, by attaching a color polarizing plate to the position of the conventional polarizing plate, the LCD manufacturing process can be simplified and the display quality can be improved. The object is to provide an element.

상기한 목적을 달성하기 위한 본 발명의 액정표시소자는 상부기판과 하부기판 상의 내면에 각각 형성된 ITO 전극과, 상기 전극 상에 각각 형성된 배향막과, 상기 상부기판과 하부기판의 외면에 각각 형성된 위상차판과, 이와같이 대향된 상하부 유리기판 사이에 봉입된 액정과, 상기 상,하부 위상차판 상의 일측에 형성된 편광판과, 상기 편광판이 형성되지 않은 위상차 판 상에 형성된 칼라 편광판으로 이루어진 구조를 갖는다.The liquid crystal display device of the present invention for achieving the above object is an ITO electrode formed on the inner surface on the upper substrate and the lower substrate, an alignment film formed on the electrode, respectively, and a phase difference plate formed on the outer surface of the upper substrate and the lower substrate, respectively And a liquid crystal encapsulated between the opposing upper and lower glass substrates, a polarizing plate formed on one side of the upper and lower retardation plates, and a color polarizing plate formed on the phase difference plate on which the polarizing plate is not formed.

이하 첨부된 도면을 참조로 하여 본 발명의 실시예에 대해 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제2도는 본 발명에 따른 칼라 액정표시소자의 구조를 나타내는 단면도로 상기 도면에서 알수 있듯이 본 발명에 따른 액정표시소자는 상부기판(1)과 하부기탄(2)의 상의 내면에 각각 ITO 전극(5)과 이와 대향되는 ITO 전극(5′)이 형성되고, 상기 전극상(5),(5′)에 각각 배향막(6)이 형성되며, 상기 상부기판(1)과 하부기판(2)의 외면에 위상차 판(7)이 형성되며, 상기 위상차판(7) 상의 일측에 편광판(8)이 형성되며, 상기 편광판(8)이 형성되지 않은 위상차판(7) 상에 칼라 편광판(8′)이 형성되는 구조로 이루어짐을 알 수 있다.2 is a cross-sectional view showing the structure of a color liquid crystal display device according to the present invention. As can be seen from the drawings, the liquid crystal display device according to the present invention has an ITO electrode 5 on the inner surface of the upper substrate 1 and the lower carbon 2, respectively. ) And an ITO electrode 5 'opposed thereto are formed, and an alignment layer 6 is formed on the electrodes 5 and 5', respectively, and an outer surface of the upper substrate 1 and the lower substrate 2 is formed. A phase difference plate 7 is formed on the polarizer, and a polarizing plate 8 is formed on one side of the phase difference plate 7, and a color polarizing plate 8 ′ is formed on the phase difference plate 7 on which the polarizing plate 8 is not formed. It can be seen that the structure is formed.

이때 칼라 편광판(8′)이 위상차(7)판의 일측에 형성되므로 LCD 패널내에 형성되는 색필터층 형성 공정은 스킵할 수 있게 된다.At this time, since the color polarizing plate 8 'is formed on one side of the retardation plate 7, the color filter layer forming process formed in the LCD panel can be skipped.

상술한 바와 같이 본 발명에 의하면, LCD 패널내에 형성되는 색필터층을 제거하는 대신 종래 편광판이 형성되던 위치에 적어도 어느 한쪽에 칼라 편광판을 부착하므로써 LCD 제조 프로세스를 간략화 시킬 수 있고 표시품질을 향상시킬 수 있게 된다.As described above, according to the present invention, the LCD manufacturing process can be simplified and the display quality can be improved by attaching the color polarizing plate to at least one of the positions where the polarizing plate is formed instead of removing the color filter layer formed in the LCD panel. Will be.

Claims (1)

상부기판과 하부기판 상의 내면에 각각 형성된 ITO 전극과, 상기 전극상에 각각 형성된 배향막과, 상기 상부기판과, 하부기판의 외면에 각각 형성된 위상차 판과, 이와같이 대향된 상하부 유리기판 사이에 봉입된 액정과, 상기 상,하부 위상차 판 상의 일측에 형성된 편광판과, 상기 편광판이 형성되지 않은 위상차 판 상에 형성된 칼라 편광판으로 이루어짐을 특징으로 하는 칼라 액정표시소자.Liquid crystal encapsulated between the ITO electrode formed on the inner surface on the upper substrate and the lower substrate, the alignment film formed on the electrode, the phase difference plate formed on the outer surface of the upper substrate and the lower substrate, and the upper and lower glass substrates facing each other. And a polarizing plate formed on one side of the upper and lower retardation plates and a color polarizing plate formed on the retardation plate on which the polarizing plate is not formed.
KR1019930001569A 1993-02-05 1993-02-05 Color liquid crystal display device KR100246921B1 (en)

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KR19980060832A (en) * 1996-12-31 1998-10-07 손욱 Color liquid crystal display
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KR20050011548A (en) * 2003-07-23 2005-01-29 삼성전자주식회사 A liquid crystal display panel device including a polarizing film having a rgb filter and manufacturing method thereof

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