JPS6490419A - Liquid crystal display device - Google Patents

Liquid crystal display device

Info

Publication number
JPS6490419A
JPS6490419A JP24586287A JP24586287A JPS6490419A JP S6490419 A JPS6490419 A JP S6490419A JP 24586287 A JP24586287 A JP 24586287A JP 24586287 A JP24586287 A JP 24586287A JP S6490419 A JPS6490419 A JP S6490419A
Authority
JP
Japan
Prior art keywords
liquid crystal
polarization
pair
angle
display pattern
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.)
Granted
Application number
JP24586287A
Other languages
Japanese (ja)
Other versions
JP2580623B2 (en
Inventor
Yutaka Nakagawa
Tetsuo Matsumoto
Yuji Hayata
Yoshinori Hirai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Inc
Original Assignee
Asahi Glass 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP62245862A priority Critical patent/JP2580623B2/en
Priority to US07/237,417 priority patent/US4952030A/en
Publication of JPS6490419A publication Critical patent/JPS6490419A/en
Application granted granted Critical
Publication of JP2580623B2 publication Critical patent/JP2580623B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)

Abstract

PURPOSE:To improve the visibility and to prevent the display contents from being recognized erroneously by placing a pair of polarization films on both faces of a liquid crystal cell, setting an angle of torsion of a liquid crystal layer to 50 deg.-85 deg., and also, placing polarization axes of a pair of polarization films so as to make a cross angle of 91-100 deg.. CONSTITUTION:A nematic liquid crystal layer 6 is inserted and held between substrates 1 (1A, 1B) provided with electrodes 2 (2A, 2B), and on both faces of a liquid crystal cell provided with a light shielding film 4 on other part than the part corresponding to a display pattern, a pair of polarization films 7 (7A, 7B) are placed so that a light beam transmits through a polarization axis of a polarization film in a part where no voltage is applied. In this state, a voltage is applied to an electrode of other display pattern part than a desired display pattern. Subsequently, polarization axes of said pair of polarization films 7 are placed so as to make a cross angle of 91-100 deg. without allowing them to be orthogonal to each other, and a contrast ratio in the diagonal direction is raised. Also, the control direction of an oriented film is allowed to cross at a prescribed angle by the upper and the lower substrates 1 so that a liquid crystal molecule forms a torsion structure of 50 deg.-85 deg., and selected in accordance with an installation angle of a display device.
JP62245862A 1987-09-04 1987-10-01 Liquid crystal display Expired - Fee Related JP2580623B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62245862A JP2580623B2 (en) 1987-10-01 1987-10-01 Liquid crystal display
US07/237,417 US4952030A (en) 1987-09-04 1988-08-29 Liquid crystal display device with a 50°-80° twist angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62245862A JP2580623B2 (en) 1987-10-01 1987-10-01 Liquid crystal display

Publications (2)

Publication Number Publication Date
JPS6490419A true JPS6490419A (en) 1989-04-06
JP2580623B2 JP2580623B2 (en) 1997-02-12

Family

ID=17139931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62245862A Expired - Fee Related JP2580623B2 (en) 1987-09-04 1987-10-01 Liquid crystal display

Country Status (1)

Country Link
JP (1) JP2580623B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01252932A (en) * 1988-03-31 1989-10-09 Matsushita Electric Ind Co Ltd Liquid crystal display device
JP2007256936A (en) * 2006-02-24 2007-10-04 Semiconductor Energy Lab Co Ltd Display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5249854A (en) * 1975-10-17 1977-04-21 Seiko Epson Corp Liquid crystal display device
JPS5481865A (en) * 1978-11-13 1979-06-29 Seikosha Kk Liquid crystal display device
JPS60162227A (en) * 1984-02-02 1985-08-24 Asahi Glass Co Ltd Twisted nematic liquid-crystal display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5249854A (en) * 1975-10-17 1977-04-21 Seiko Epson Corp Liquid crystal display device
JPS5481865A (en) * 1978-11-13 1979-06-29 Seikosha Kk Liquid crystal display device
JPS60162227A (en) * 1984-02-02 1985-08-24 Asahi Glass Co Ltd Twisted nematic liquid-crystal display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01252932A (en) * 1988-03-31 1989-10-09 Matsushita Electric Ind Co Ltd Liquid crystal display device
JP2007256936A (en) * 2006-02-24 2007-10-04 Semiconductor Energy Lab Co Ltd Display device

Also Published As

Publication number Publication date
JP2580623B2 (en) 1997-02-12

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Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees