KR960015016A - Liquid crystal panel - Google Patents

Liquid crystal panel Download PDF

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Publication number
KR960015016A
KR960015016A KR1019950034617A KR19950034617A KR960015016A KR 960015016 A KR960015016 A KR 960015016A KR 1019950034617 A KR1019950034617 A KR 1019950034617A KR 19950034617 A KR19950034617 A KR 19950034617A KR 960015016 A KR960015016 A KR 960015016A
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KR
South Korea
Prior art keywords
liquid crystal
display panel
refractive index
optical axis
thickness direction
Prior art date
Application number
KR1019950034617A
Other languages
Korean (ko)
Inventor
히로유키 후지타
시게루 센본마츠
가오리 다니구치
슈헤이 야마모토
벨젠 테오
Original Assignee
이토 기요시
세이코덴시고교 가부시키가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP7251527A external-priority patent/JPH08278500A/en
Application filed by 이토 기요시, 세이코덴시고교 가부시키가이샤 filed Critical 이토 기요시
Publication of KR960015016A publication Critical patent/KR960015016A/en

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Classifications

    • 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

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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 발명의 목적은 액정표시판의 대비율의 시야 각도 의존도를 개선시키고 착색을 방지하는데에 있다.An object of the present invention is to improve the viewing angle dependency of the contrast ratio of the liquid crystal panel and to prevent coloring.

액정표시판에는 양의 이방성의 굴절율을 가지면서 고도로 트위스트된 네마틱 액정(4)이 장치되어 있다. 네마틱 액정의 지연도는 0.55㎛ 내지 0.75㎛로 설정되어 있고, 트위스트 각은 180° 내지 270°로 설정되어 있다.The liquid crystal panel is equipped with a highly twisted nematic liquid crystal 4 having a positive anisotropy refractive index. The retardance of the nematic liquid crystal is set to 0.55 탆 to 0.75 탆, and the twist angle is set to 180 degrees to 270 degrees.

또는 두께 방향에서의 굴절율이 그에 직각인 면내 방향에서의 굴절율보다 더 작다. 또는 지연도가 0.2㎛이하로 설정되어 있다.Or the refractive index in the thickness direction is smaller than the refractive index in the in-plane direction perpendicular thereto. Alternatively, the delay is set to 0.2 µm or less.

Description

액정 표시판Liquid crystal panel

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 의한 액정 표시판의 기본형태를 도시하는 단면도,1 is a cross-sectional view showing the basic form of a liquid crystal display panel according to the present invention;

제2도는 본 발명에 의한 액정 표시판의 일례를 도시하는 전형적인 단면도,2 is a typical cross-sectional view showing an example of a liquid crystal display panel according to the present invention;

제3도는 종래의 액정 표시판의 일례를 도시하는 전형적인 단면도.3 is a typical cross-sectional view showing an example of a conventional liquid crystal display panel.

Claims (6)

평면방향으로 분포되어 있으면서 두께 방향으로 진행하는 빔을 조정하는 액정 셀과, 상기 액정 셀을 통과하는 빔의 파장 분산을 보상하고 변경시키는 광학 이방성 기판들이 적층되어 있는 적층 구조의 표시판에 있어서, 상기 액정 셀은 양의 이방성의 굴절율을 가지면서 평면 방향으로 향해 있는 광축을 가지는 액정층을 가지며, 상기 광학 이방성 기판은 음의 이방성의 굴절율을 가지면서 평면방향으로 향해 있는 광축을 가지는 폴리머막으로 이루어진 것을 특징으로 하는 표시판.A liquid crystal cell in which a beam is distributed in a planar direction and adjusts a beam traveling in a thickness direction, and an optically anisotropic substrate for compensating and changing wavelength dispersion of a beam passing through the liquid crystal cell is laminated. The cell has a liquid crystal layer having an optical axis pointing in the planar direction while having a positive anisotropy refractive index, and the optically anisotropic substrate is made of a polymer film having an optical axis pointing in the planar direction while having a negative anisotropy refractive index. Display panel. 제1항에 있어서, 상기 액정층은 비틀리도록 방향을 가지며, 그 광축은 90°를 초과하는 각도에서 두께방향을 따라 전방 방향으로 트위스트되게 회전되어 있고, 상기 광축 이방성 기판은 90°를 초과하는 각도에서 두께 방향을 따라 반대방향으로 트위스트되게 회전되어 있는 것을 특징으로 하는 표시판.The liquid crystal layer of claim 1, wherein the liquid crystal layer has a direction twisted, the optical axis is rotated in a forward direction along a thickness direction at an angle exceeding 90 °, and the optical axis anisotropic substrate is an angle exceeding 90 °. The display panel is rotated so as to be twisted in the opposite direction along the thickness direction. 제1항에 있어서, 상기 액정층은 트위스트되게 방향을 가지며, 그 광축은 90°를 초과하는 각도에서 두께방향을 따라 전방 방향으로 트위스트되게 회전되어 있고, 상기 광축 이방성 기판들은 각각의 광축이 단계적으로 반대방향으로 트위스트되게 회전되어 있는 다수의 적층 폴리머 막으로 이루어진 것을 특징으로 하는 표시판.The liquid crystal layer of claim 1, wherein the liquid crystal layer has a twisted direction, and the optical axis is rotated in a forward direction along the thickness direction at an angle exceeding 90 °, and the optical axis anisotropic substrates have respective optical axes stepwise. A display panel comprising a plurality of laminated polymer films that are rotated in opposite directions. 투명전극을 가진 한 쌍의 기판과 방향판 사이에 배치되어 있으면서 양의 이방성의 굴절율을 가지는 고도로 트위스트된 네마틱액정으로 이루어진 액정표시판에 있어서, 액정의 지연도는 0.55㎛ 내지 0.75㎛로 설정되어 있고, 상기 트위스트 각은 180° 내지 270°로 설정되어 있는 것을 특징으로 하는 액정 표시판.In a liquid crystal display panel composed of a highly twisted nematic liquid crystal having a positive anisotropy refractive index disposed between a pair of substrates having a transparent electrode and a direction plate, the retardance of the liquid crystal is set at 0.55 탆 to 0.75 탆. And the twist angle is set to 180 ° to 270 °. 제4항에 있어서, 광학 이방성 기판이면서 지연도가 200㎚ 이하로 설정되어 있는 폴리머 막을 포함하는 것을 특징으로 하는 액정표시판.The liquid crystal display panel according to claim 4, comprising a polymer film which is an optically anisotropic substrate and whose retardation is set to 200 nm or less. 제5항에 있어서, 두께 방향에서의 굴절율이 그에 직각인 면내 방향에서의 굴절율보다 더 작은 광학 이방성 기판인 폴리머 막을 포함하고 있는 것을 특징으로 하는 액정표시판.6. The liquid crystal display panel according to claim 5, wherein the liquid crystal display panel comprises a polymer film which is an optically anisotropic substrate whose refractive index in the thickness direction is smaller than the refractive index in the in-plane direction perpendicular thereto. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950034617A 1994-10-07 1995-10-07 Liquid crystal panel KR960015016A (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP24443194 1994-10-07
JP94-244431 1994-10-07
JP32610794 1994-12-27
JP94-326107 1994-12-27
JP1957695 1995-02-07
JP95-19576 1995-02-07
JP7251527A JPH08278500A (en) 1994-10-07 1995-09-28 Liquid crystal display panel
JP95-251527 1995-10-28

Publications (1)

Publication Number Publication Date
KR960015016A true KR960015016A (en) 1996-05-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950034617A KR960015016A (en) 1994-10-07 1995-10-07 Liquid crystal panel

Country Status (2)

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KR (1) KR960015016A (en)
DE (1) DE69529390T2 (en)

Also Published As

Publication number Publication date
DE69529390T2 (en) 2003-08-28
DE69529390D1 (en) 2003-02-20

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