KR950033569A - Ferroelectric liquid crystal display device - Google Patents

Ferroelectric liquid crystal display device Download PDF

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Publication number
KR950033569A
KR950033569A KR1019940012160A KR19940012160A KR950033569A KR 950033569 A KR950033569 A KR 950033569A KR 1019940012160 A KR1019940012160 A KR 1019940012160A KR 19940012160 A KR19940012160 A KR 19940012160A KR 950033569 A KR950033569 A KR 950033569A
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KR
South Korea
Prior art keywords
liquid crystal
crystal display
ferroelectric liquid
display device
alignment film
Prior art date
Application number
KR1019940012160A
Other languages
Korean (ko)
Other versions
KR0161377B1 (en
Inventor
정성은
이종천
Original Assignee
윤종용
삼성전관 주식회사
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.)
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Publication date
Application filed by 윤종용, 삼성전관 주식회사 filed Critical 윤종용
Priority to KR1019940012160A priority Critical patent/KR0161377B1/en
Priority to JP7004140A priority patent/JP2766784B2/en
Priority to GB9501977A priority patent/GB2289952B/en
Publication of KR950033569A publication Critical patent/KR950033569A/en
Application granted granted Critical
Publication of KR0161377B1 publication Critical patent/KR0161377B1/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
    • G02F1/137—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
    • G02F1/141—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 using ferroelectric liquid crystals
    • 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
    • G02F1/137—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
    • G02F1/141—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 using ferroelectric liquid crystals
    • G02F1/1418—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 using ferroelectric liquid crystals using smectic liquid crystals, e.g. based on the electroclinic effect

Abstract

본 발명은 강유전성 액정표시소자에 관한 것으로서, 상하 한쌍의 기판, 상기 각 기판의 상부에 형성된 투명전극, 상기 각 투명전극의 상부에 형성되어 소정의 방향으로 러빙된 배향막, 상기 배향막의 사이에 주입된 강유전성 액정을 구비하는 강유전성 액정표시소자에 있어서, 상기 배향막의 러빙 방향의 각도가 상기 액정의 고유 틸트각의 2±0.2배가 되도록 조절하여 상하 기판을 접합하여 된 것이다. 본 발명의 액정표시소자는 중간계조 표시가 가능한 것이고 광학적 특성이 우수하며 빠른 응답속도를 갖는 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ferroelectric liquid crystal display device, comprising a pair of upper and lower substrates, a transparent electrode formed on each of the substrates, an alignment film formed on top of each of the transparent electrodes and rubbed in a predetermined direction, and injected between the alignment films. In a ferroelectric liquid crystal display device having a ferroelectric liquid crystal, the upper and lower substrates are bonded by adjusting the angle of the rubbing direction of the alignment film to be 2 ± 0.2 times the intrinsic tilt angle of the liquid crystal. The liquid crystal display of the present invention is capable of displaying a halftone, having excellent optical characteristics, and having a fast response speed.

Description

강유전성 액정표시소자Ferroelectric liquid crystal display device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 통상적인 액정표시소자의 개략적인 단면도이다. 제2도는 통상적인 액정표시소자에 있어서, 비틀린 강유전성 액정판넬의 광학적 특서을 나타내는 도면으로서, A)는 광투과상태를 나타내고, B)는 광차단 상태를 나타낸다. 제3도는 외부전기장의 크기에 따른 광투과율 측정 결과를 나타내는 그래프로서 A)는 본 발명의 실시 예1에 따른 판넬에 대한 것이고, B)는 본 발명의 실시예2에 따른 판넬에 대한 것이다. 제4도는 외부전기장의 크기에 따른 응답속도를 나타내는 그래프로서 A)는 본 발명의 실시예1에 따른 판넬에 대한 것이고, B)는 본 발명의 실시예2에 따른 판넬에 대한 것이다.1 is a schematic cross-sectional view of a conventional liquid crystal display device. FIG. 2 is a view showing optical characteristics of a twisted ferroelectric liquid crystal panel in a conventional liquid crystal display device, in which A) shows a light transmission state and B) shows a light blocking state. 3 is a graph showing light transmittance measurement results according to the size of an external electric field, A) is for a panel according to Example 1 of the present invention, and B) is for a panel according to Example 2 of the present invention. 4 is a graph showing the response speed according to the size of the external electric field, A) for the panel according to the first embodiment of the present invention, B) for the panel according to the second embodiment of the present invention.

Claims (2)

상하 한쌍의 기관, 상기 각 기판의 상부에 형성된 투명전극, 상기 각 투명전극의 상부에 형성되어 소정의 방향으로 러빙된 배향막, 상기 배향막의 사이에 주입된 강유전성 액정을 구비하는 강유전성 액정표시소자에 있엇, 상기 배향막의 러빙 방향의 각도가 상기 액정의 고유 틸트각의 2±0.2배가 되도록 조절된 것을 특징으로 하는 강유전성 액정표시소자.A ferroelectric liquid crystal display device comprising a pair of upper and lower engines, a transparent electrode formed on top of each substrate, an alignment film formed on top of each transparent electrode and rubbed in a predetermined direction, and a ferroelectric liquid crystal injected between the alignment films. And the angle in the rubbing direction of the alignment layer is adjusted to be 2 ± 0.2 times the intrinsic tilt angle of the liquid crystal. 제1항에 있어서, 상기 강유전성 액정이 온도에 따른 액정의 상변화시 스메틱 A상 (Smectic A phase)을 포함하는 것을 특징으로 하는 액정표시소자.The liquid crystal display of claim 1, wherein the ferroelectric liquid crystal comprises a Smectic A phase when the liquid crystal phase changes with temperature. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940012160A 1994-05-31 1994-05-31 Ferroelectric liquid crystal display element KR0161377B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019940012160A KR0161377B1 (en) 1994-05-31 1994-05-31 Ferroelectric liquid crystal display element
JP7004140A JP2766784B2 (en) 1994-05-31 1995-01-13 Ferroelectric liquid crystal display device
GB9501977A GB2289952B (en) 1994-05-31 1995-02-01 Ferroelectric liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940012160A KR0161377B1 (en) 1994-05-31 1994-05-31 Ferroelectric liquid crystal display element

Publications (2)

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KR950033569A true KR950033569A (en) 1995-12-26
KR0161377B1 KR0161377B1 (en) 1999-01-15

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KR1019940012160A KR0161377B1 (en) 1994-05-31 1994-05-31 Ferroelectric liquid crystal display element

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JP (1) JP2766784B2 (en)
KR (1) KR0161377B1 (en)
GB (1) GB2289952B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100312684B1 (en) * 1999-09-13 2001-11-03 모나한 토마스 제이 Reflective type liquid crystal display of using twisted feroelectric liquid crystal material

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250735A (en) * 1985-08-29 1987-03-05 Matsushita Electric Ind Co Ltd Liquid crystal display device
US5172257A (en) * 1991-11-08 1992-12-15 Bell Communications Research, Inc. Twisted ferroelectric liquid crystal modulator for providing gray scale
JPH05297374A (en) * 1992-04-15 1993-11-12 Idemitsu Kosan Co Ltd Liquid crystal display element and its display method
JP3040921B2 (en) * 1993-10-13 2000-05-15 キヤノン株式会社 Ferroelectric liquid crystal element and liquid crystal device having the same

Also Published As

Publication number Publication date
GB2289952A (en) 1995-12-06
GB9501977D0 (en) 1995-03-22
JP2766784B2 (en) 1998-06-18
JPH07333616A (en) 1995-12-22
GB2289952B (en) 1998-11-11
KR0161377B1 (en) 1999-01-15

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