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JPS5548734A - Colored liquid crystal display device - Google Patents

Colored liquid crystal display device

Info

Publication number
JPS5548734A
JPS5548734A JP12234278A JP12234278A JPS5548734A JP S5548734 A JPS5548734 A JP S5548734A JP 12234278 A JP12234278 A JP 12234278A JP 12234278 A JP12234278 A JP 12234278A JP S5548734 A JPS5548734 A JP S5548734A
Authority
JP
Japan
Prior art keywords
phase difference
degrees
liquid crystal
plate
polarizing plate
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
JP12234278A
Other languages
Japanese (ja)
Inventor
Haruo Watanabe
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.)
Citizen Watch Co Ltd
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 JP12234278A priority Critical patent/JPS5548734A/en
Publication of JPS5548734A publication Critical patent/JPS5548734A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)

Abstract

PURPOSE: To make it possible to obtain a good displaying contrast with an electric field effect type color liquid crystal display device using a phase difference plate, by applying a 45 degrees twist system to the liquid crystal orientation and using an absorption coloration for nondisplaying portions and an interference coloration for displaying portions.
CONSTITUTION: A 45 degrees twist system (the orientation of liquid crystal is twisted in the direction which obliques with the horizontal direction for an angle of 45 degrees) is used as liquid crystal cell 12, iodine polarizing plate 11 having a vertical polarization axis is installed at the light source side, and phase difference plate 13 which is oriented in the direction of 45 degrees (in the same direction as the right side transparent plate of cell 12) and iodine polarizing plate 14 having a vertical polarization axis are installed at the observer side. With this device, a linear polarized light incident through polarizing plate 11 is rotated for an angle of 45 degrees by cell 12, and the rotated polarized light becomes parallel to the elongated direction of phase difference plate 13 and is incident on polarizing plate 14 without receiving any affect of the phase difference, and the light shows a pale grayish absorption coloration under OFF condition. The linear polarized light is incident on phase difference plate 13 with an angle of 45 degrees and receives affects of the phase difference and shows an interference coloration.
COPYRIGHT: (C)1980,JPO&Japio
JP12234278A 1978-10-04 1978-10-04 Colored liquid crystal display device Pending JPS5548734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12234278A JPS5548734A (en) 1978-10-04 1978-10-04 Colored liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12234278A JPS5548734A (en) 1978-10-04 1978-10-04 Colored liquid crystal display device

Publications (1)

Publication Number Publication Date
JPS5548734A true JPS5548734A (en) 1980-04-08

Family

ID=14833577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12234278A Pending JPS5548734A (en) 1978-10-04 1978-10-04 Colored liquid crystal display device

Country Status (1)

Country Link
JP (1) JPS5548734A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987322A (en) * 1982-11-11 1984-05-19 Oval Eng Co Ltd Output amplifying circuit
JPS61210331A (en) * 1985-03-08 1986-09-18 テクトロニツクス・インコーポレイテツド Color filter
JPH01127329A (en) * 1987-11-12 1989-05-19 Fujimori Kogyo Kk Laminated body with optical phase function
JPH03156420A (en) * 1989-11-15 1991-07-04 Hitachi Ltd Liquid crystal display
US7755724B2 (en) 2007-07-20 2010-07-13 Au Optronics Corporation Display apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843292A (en) * 1971-09-28 1973-06-22
JPS5083052A (en) * 1973-06-09 1975-07-04
JPS5122400A (en) * 1974-08-19 1976-02-23 Seiko Instr & Electronics EKISHOHYOJISOCHI

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843292A (en) * 1971-09-28 1973-06-22
JPS5083052A (en) * 1973-06-09 1975-07-04
JPS5122400A (en) * 1974-08-19 1976-02-23 Seiko Instr & Electronics EKISHOHYOJISOCHI

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987322A (en) * 1982-11-11 1984-05-19 Oval Eng Co Ltd Output amplifying circuit
JPS61210331A (en) * 1985-03-08 1986-09-18 テクトロニツクス・インコーポレイテツド Color filter
JPH01127329A (en) * 1987-11-12 1989-05-19 Fujimori Kogyo Kk Laminated body with optical phase function
JPH03156420A (en) * 1989-11-15 1991-07-04 Hitachi Ltd Liquid crystal display
US7755724B2 (en) 2007-07-20 2010-07-13 Au Optronics Corporation Display apparatus

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