GB1386714A - Liquid crystal display device - Google Patents

Liquid crystal display device

Info

Publication number
GB1386714A
GB1386714A GB651273A GB651273A GB1386714A GB 1386714 A GB1386714 A GB 1386714A GB 651273 A GB651273 A GB 651273A GB 651273 A GB651273 A GB 651273A GB 1386714 A GB1386714 A GB 1386714A
Authority
GB
United Kingdom
Prior art keywords
liquid crystal
polarizer
analyser
display device
polarization
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.)
Expired
Application number
GB651273A
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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 Suwa Seikosha KK filed Critical Suwa Seikosha KK
Publication of GB1386714A publication Critical patent/GB1386714A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0047—Details electrical, e.g. selection or application of the operating voltage
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

1386714 Matrix displays SUWA SEIKOSHA KK 9 Feb 1973 [16 Feb 1972] 6512/73 Heading G5C [Also in Division G3] In a display device comprising liquid crystal material 16 between an analyser 17 and a polarizer 18 a phosphor layer 20 is added to improve contrast. The planes of polarization of the analyser and polarizer are perpendicular and the liquid crystal rotates the plane of polarization through 90 degrees when a field is not applied. Hence on energizing electrodes 21 . . 24 a dark pattern on a light background is produced when viewed from the analyser side. The planes may be parallel and a light pattern formed on a dark background. The electrodes 23, 24 on the polarizer may be reflective and an apertured insulating film placed over them. The device is used in a wrist-watch with COS-MOS driving circuitry.
GB651273A 1972-02-07 1973-02-09 Liquid crystal display device Expired GB1386714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47015624A JPS4886493A (en) 1972-02-07 1972-02-07

Publications (1)

Publication Number Publication Date
GB1386714A true GB1386714A (en) 1975-03-12

Family

ID=11893851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB651273A Expired GB1386714A (en) 1972-02-07 1973-02-09 Liquid crystal display device

Country Status (5)

Country Link
JP (1) JPS4886493A (en)
CH (1) CH545078A (en)
GB (1) GB1386714A (en)
HK (2) HK61076A (en)
MY (2) MY7700021A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007645A2 (en) * 1978-08-02 1980-02-06 Siemens Aktiengesellschaft Device for collecting light
EP0007644A2 (en) * 1978-08-02 1980-02-06 Siemens Aktiengesellschaft Device for collecting light and process for the manufacture of such a device
EP0007635A2 (en) * 1978-08-02 1980-02-06 Siemens Aktiengesellschaft Device for collecting light and process for the manufacture of such a device
US4470666A (en) * 1979-06-18 1984-09-11 General Motors Corporation Colored liquid crystal display
GB2169122A (en) * 1984-11-22 1986-07-02 Ricoh Kk Liquid crystal color display device
EP0240345A2 (en) * 1986-04-04 1987-10-07 Sherwood Medical Company Light modulating display member
FR2598012A3 (en) * 1986-04-29 1987-10-30 Crouzet Sa Liquid crystal display
EP0890866A2 (en) * 1997-06-09 1999-01-13 Seiko Epson Corporation Display device and electronic watch

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50114998A (en) * 1974-02-18 1975-09-09
JPS5149604U (en) * 1974-10-14 1976-04-14
AT351615B (en) * 1975-12-03 1979-08-10 Siemens Ag ARRANGEMENT FOR PASSIVE BRIGHTNESS GAIN OF ONE- OR MULTICOLOR DISPLAY DEVICES
JPS59184176U (en) * 1983-05-27 1984-12-07 セイコー株式会社 lcd display panel

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007645A2 (en) * 1978-08-02 1980-02-06 Siemens Aktiengesellschaft Device for collecting light
EP0007644A2 (en) * 1978-08-02 1980-02-06 Siemens Aktiengesellschaft Device for collecting light and process for the manufacture of such a device
EP0007635A2 (en) * 1978-08-02 1980-02-06 Siemens Aktiengesellschaft Device for collecting light and process for the manufacture of such a device
EP0007644A3 (en) * 1978-08-02 1980-03-05 Siemens Ag Device for collecting light and process for the manufacture of such a device
EP0007635A3 (en) * 1978-08-02 1980-03-05 Siemens Ag Device for collecting light and process for the manufacture of such a device
EP0007645A3 (en) * 1978-08-02 1980-03-19 Siemens Ag Device for collecting light
US4470666A (en) * 1979-06-18 1984-09-11 General Motors Corporation Colored liquid crystal display
GB2169122A (en) * 1984-11-22 1986-07-02 Ricoh Kk Liquid crystal color display device
EP0240345A2 (en) * 1986-04-04 1987-10-07 Sherwood Medical Company Light modulating display member
EP0240345A3 (en) * 1986-04-04 1989-06-21 Sherwood Medical Company Light modulating display member
FR2598012A3 (en) * 1986-04-29 1987-10-30 Crouzet Sa Liquid crystal display
EP0890866A2 (en) * 1997-06-09 1999-01-13 Seiko Epson Corporation Display device and electronic watch
EP0890866A3 (en) * 1997-06-09 2000-01-19 Seiko Epson Corporation Display device and electronic watch

Also Published As

Publication number Publication date
HK61076A (en) 1976-10-08
CH545078A (en) 1973-12-15
JPS4886493A (en) 1973-11-15
MY7700021A (en) 1977-12-31
HK60976A (en) 1976-10-08
MY7700022A (en) 1977-12-31

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930207