JPH03103822A - Liquid crystal display device - Google Patents

Liquid crystal display device

Info

Publication number
JPH03103822A
JPH03103822A JP1240586A JP24058689A JPH03103822A JP H03103822 A JPH03103822 A JP H03103822A JP 1240586 A JP1240586 A JP 1240586A JP 24058689 A JP24058689 A JP 24058689A JP H03103822 A JPH03103822 A JP H03103822A
Authority
JP
Japan
Prior art keywords
phase difference
axis
angle
against
made
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP1240586A
Inventor
Motohisa Arai
Takafumi Koike
Original Assignee
Citizen Watch Co Ltd
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
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP1240586A priority Critical patent/JPH03103822A/en
Publication of JPH03103822A publication Critical patent/JPH03103822A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To decrease the visual angle dependency by combining the crossing angles of optical axes of two kinds of phase difference plates in which codes of refractive index anisotropy are different to 45°-90°.
CONSTITUTION: When an angle of torsion of a liquid crystal molecule is the left spiral of 240°, and orthogonal axes X, Y for dividing it into two equal parts are determined, an angle θ1 made by an optical axis of a negative phase difference plate 103 against the X axis, and an angle θ2 made by an optical axis of a positive phase difference plate 102 against the X axis are set as 30° and 60°, respectively. Also, an angle P1 made by a polarization axis of the upper polarizing plate 101 against the X axis, and an angle P2 made by a polarization axis of the lower polarizing plate against the X axis are set to 75° and 15°, respectively. In such a state, the direction of a large refractive index, and that of a small refractive index come to be combined with the large direction and the small direction, respectively, and as for a phase difference, it becomes the same as that which is added. Also, from the viewpoint of the visual angle dependency, in the direction in which one phase difference increases, the other becomes the combination in which the phase difference decreases, therefore, an optical biaxial ratio, and an absolute value of each phase difference quantity are set so that its value becomes near '0', and the variation quantity of the phase difference is negated to each other and becomes small. In such a way, the visual angle dependency of the phase difference plate can be reduced.
COPYRIGHT: (C)1991,JPO&Japio
JP1240586A 1989-09-19 1989-09-19 Liquid crystal display device Pending JPH03103822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1240586A JPH03103822A (en) 1989-09-19 1989-09-19 Liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1240586A JPH03103822A (en) 1989-09-19 1989-09-19 Liquid crystal display device

Publications (1)

Publication Number Publication Date
JPH03103822A true JPH03103822A (en) 1991-04-30

Family

ID=17061718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1240586A Pending JPH03103822A (en) 1989-09-19 1989-09-19 Liquid crystal display device

Country Status (1)

Country Link
JP (1) JPH03103822A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04138424A (en) * 1990-09-28 1992-05-12 Sharp Corp Liquid crystal display device
US6630975B1 (en) 1999-02-26 2003-10-07 Sharp Kabushiki Kaisha Liquid crystal display device, and method for producing the same
US6642981B1 (en) 1996-09-30 2003-11-04 Fujitsu Display Technologies Corporation Liquid crystal display device operating in a vertically aligned mode including at least one retardation film
US6822715B2 (en) 1998-07-24 2004-11-23 Sharp Kabushiki Kaisha Liquid crystal display with sub pixel regions defined by sub electrode regions

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04138424A (en) * 1990-09-28 1992-05-12 Sharp Corp Liquid crystal display device
US7548294B2 (en) 1996-09-30 2009-06-16 Sharp Kabushiki Kaisha Liquid crystal display device operating in a vertically aligned mode
US6642981B1 (en) 1996-09-30 2003-11-04 Fujitsu Display Technologies Corporation Liquid crystal display device operating in a vertically aligned mode including at least one retardation film
US7808592B2 (en) 1996-09-30 2010-10-05 Sharp Kabushiki Kaisha Liquid crystal display device operating in a vertical aligned mode having particular optical biaxial retardation film
US7075609B2 (en) 1996-09-30 2006-07-11 Sharp Kabushiki Kaisha Liquid crystal display device comprising p-type liquid crystal layer operating in vertically aligned mode including first and second retardation films
US7379140B2 (en) 1996-09-30 2008-05-27 Sharp Kabushiki Kaisha Liquid crystal display device operating in a vertically aligned mode comprising an optically biaxial retardation film
US7995175B2 (en) 1996-09-30 2011-08-09 Sharp Kabushiki Kaisha Liquid crystal display device
US7084947B2 (en) 1998-07-24 2006-08-01 Sharp Kabushiki Kaisha Multi-domain liquid crystal display device having alignment structures for producing axial symmetrical alignment and method for producing the same
US7564525B2 (en) 1998-07-24 2009-07-21 Sharp Kabushiki Kaisha Liquid crystal display device and method for producing the same
US6822715B2 (en) 1998-07-24 2004-11-23 Sharp Kabushiki Kaisha Liquid crystal display with sub pixel regions defined by sub electrode regions
US6630975B1 (en) 1999-02-26 2003-10-07 Sharp Kabushiki Kaisha Liquid crystal display device, and method for producing the same

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