JPH0313916A - Phase difference plate and liquid crystal electro-optical device using this plate - Google Patents

Phase difference plate and liquid crystal electro-optical device using this plate

Info

Publication number
JPH0313916A
JPH0313916A JP1150077A JP15007789A JPH0313916A JP H0313916 A JPH0313916 A JP H0313916A JP 1150077 A JP1150077 A JP 1150077A JP 15007789 A JP15007789 A JP 15007789A JP H0313916 A JPH0313916 A JP H0313916A
Authority
JP
Japan
Prior art keywords
phase difference
difference plate
plate
wavelength
manner
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
JP1150077A
Inventor
Osamu Okumura
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP1150077A priority Critical patent/JPH0313916A/en
Publication of JPH0313916A publication Critical patent/JPH0313916A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To allow the more perfect optical compensation of the phase difference plate consisting of two sheets of oriented films of a high polymer by laminating two sheets of the above-mentioned films in such a manner that the orienting directions thereof intersect orthogonally with each other.
CONSTITUTION: The phase difference plate is formed by laminating the uniaxially oriented film 30 consisting of polycarbonate PC of 580μm thickness and the uniaxially oriented film 31 consisting of polypropylene PP of 850μm thickness, which films vary in the dependency of the double refractive index Δn on wavelength from each other, in such a manner that the orienting directions thereof intersect orthogonally with each other. The ν values to indicate the dependency, on wavelength, of the double refractive indices Δn of the PC and PP having the large dependency of Δn on wavelength and the larger retardation are respectively 1.12 and 1.05, but the phase difference plate of the high dispersion as high as ν=1.34 is obtd. by superposing both in such a manner that the axes of orientation intersect orthogonally with each other. Namely, the phase difference plate which can make the more perfect optical compensation is obtd. according to such constitution.
COPYRIGHT: (C)1991,JPO&Japio
JP1150077A 1989-06-13 1989-06-13 Phase difference plate and liquid crystal electro-optical device using this plate Pending JPH0313916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1150077A JPH0313916A (en) 1989-06-13 1989-06-13 Phase difference plate and liquid crystal electro-optical device using this plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1150077A JPH0313916A (en) 1989-06-13 1989-06-13 Phase difference plate and liquid crystal electro-optical device using this plate

Publications (1)

Publication Number Publication Date
JPH0313916A true JPH0313916A (en) 1991-01-22

Family

ID=15489015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1150077A Pending JPH0313916A (en) 1989-06-13 1989-06-13 Phase difference plate and liquid crystal electro-optical device using this plate

Country Status (1)

Country Link
JP (1) JPH0313916A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184236A (en) * 1990-08-10 1993-02-02 Casio Computer Co., Ltd. Twisted nematic liquid crystal display device with retardation plates having phase axis direction within 15° of alignment direction
JPH0627467A (en) * 1992-07-08 1994-02-04 Seikosha Co Ltd Liquid crystal optical device
US5499126A (en) * 1993-12-02 1996-03-12 Ois Optical Imaging Systems, Inc. Liquid crystal display with patterned retardation films
US5519523A (en) * 1991-11-08 1996-05-21 Hitachi, Ltd. Liquid crystal display device with residual retardation compensated for in liquid crystal layer
US5570214A (en) * 1993-12-15 1996-10-29 Ois Optical Imaging Systems, Inc. Normally white twisted nematic LCD with retardation films on opposite sides of liquid crystal material for improved viewing zone
US5576861A (en) * 1993-12-15 1996-11-19 Ois Optical Imaging Systems, Inc. Liquid crystal display having a retarder with 100-200nm retardation and having high contrast viewing zone centered in positive or negative vertical region
US5594568A (en) * 1993-12-15 1997-01-14 Ois Optical Imaging Systems, Inc. LCD with a pair of retardation films on one side of normally white liquid crystal layer
US5638200A (en) * 1995-02-03 1997-06-10 Ois Optical Imaging Systems, Inc. Liquid crystal display with tilted retardation film
US5907378A (en) * 1993-12-15 1999-05-25 Ois Optical Imaging Systems, Inc. Normally white twisted nematic liquid crystal display including retardation films for improving viewing characteristics
US6362862B1 (en) 1996-04-26 2002-03-26 Hitachi, Ltd. Liquid crystal display
WO2008001582A1 (en) 2006-06-28 2008-01-03 Sharp Kabushiki Kaisha Complex birefringent medium, polarizing plate, and liquid crystal device

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184236A (en) * 1990-08-10 1993-02-02 Casio Computer Co., Ltd. Twisted nematic liquid crystal display device with retardation plates having phase axis direction within 15° of alignment direction
US5519523A (en) * 1991-11-08 1996-05-21 Hitachi, Ltd. Liquid crystal display device with residual retardation compensated for in liquid crystal layer
JPH0627467A (en) * 1992-07-08 1994-02-04 Seikosha Co Ltd Liquid crystal optical device
US6169590B1 (en) 1993-12-02 2001-01-02 Ois Optical Imaging Systems, Inc. Liquid crystal display with optical compensator
US5499126A (en) * 1993-12-02 1996-03-12 Ois Optical Imaging Systems, Inc. Liquid crystal display with patterned retardation films
US5818615A (en) * 1993-12-02 1998-10-06 Ois Optical Imaging Systems, Inc. Liquid crystal display with patterned retardation films
US5594568A (en) * 1993-12-15 1997-01-14 Ois Optical Imaging Systems, Inc. LCD with a pair of retardation films on one side of normally white liquid crystal layer
US6229588B1 (en) 1993-12-15 2001-05-08 Ois Optical Imaging Systems, Inc. Normally white LCD including first and second biaxial retarders
US5737048A (en) * 1993-12-15 1998-04-07 Ois Optical Imaging Systems, Inc. Liquid crystal display having high contrast viewing zone centered in positive or negative vertical region with retarder's retardation equal to 100-250 nanometers
US5576861A (en) * 1993-12-15 1996-11-19 Ois Optical Imaging Systems, Inc. Liquid crystal display having a retarder with 100-200nm retardation and having high contrast viewing zone centered in positive or negative vertical region
US5570214A (en) * 1993-12-15 1996-10-29 Ois Optical Imaging Systems, Inc. Normally white twisted nematic LCD with retardation films on opposite sides of liquid crystal material for improved viewing zone
US6028651A (en) * 1993-12-15 2000-02-22 Ois Optical Imaging Systems, Inc. Normally white twisted nematic liquid crystal display including retardation films for improving viewing characteristics
US6226065B1 (en) 1993-12-15 2001-05-01 Ois Optical Imaging Systems, Inc. Liquid crystal display having high contrast viewing zone centered in positive or negative vertical region
US5907378A (en) * 1993-12-15 1999-05-25 Ois Optical Imaging Systems, Inc. Normally white twisted nematic liquid crystal display including retardation films for improving viewing characteristics
US6057901A (en) * 1995-02-03 2000-05-02 Ois Optical Imaging Sytems, Inc. Liquid crystal display with first and second tilted retarders
US5638200A (en) * 1995-02-03 1997-06-10 Ois Optical Imaging Systems, Inc. Liquid crystal display with tilted retardation film
US6362862B1 (en) 1996-04-26 2002-03-26 Hitachi, Ltd. Liquid crystal display
WO2008001582A1 (en) 2006-06-28 2008-01-03 Sharp Kabushiki Kaisha Complex birefringent medium, polarizing plate, and liquid crystal device
EP2042896A2 (en) 2006-06-28 2009-04-01 Sharp Corporation Complex birefringent medium polarizing plate, and liquid crystal device
US7999893B2 (en) 2006-06-28 2011-08-16 Sharp Kabushiki Kaisha Complex birefringent medium, polarizing plate, and liquid crystal device

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