GB1276523A - Liquid crystal display assembly having independent contrast and speed of response controls - Google Patents

Liquid crystal display assembly having independent contrast and speed of response controls

Info

Publication number
GB1276523A
GB1276523A GB3711669A GB3711669A GB1276523A GB 1276523 A GB1276523 A GB 1276523A GB 3711669 A GB3711669 A GB 3711669A GB 3711669 A GB3711669 A GB 3711669A GB 1276523 A GB1276523 A GB 1276523A
Authority
GB
United Kingdom
Prior art keywords
speed
liquid crystal
crystal display
display assembly
response controls
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
GB3711669A
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of GB1276523A publication Critical patent/GB1276523A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/12—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • H04N3/127—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays using liquid crystals
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13743—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on electrohydrodynamic instabilities or domain formation in liquid crystals
    • G02F1/1375—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on electrohydrodynamic instabilities or domain formation in liquid crystals using dynamic scattering

Landscapes

  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal Substances (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Indicating Measured Values (AREA)

Abstract

1276523 Modulating light RCA CORPORATION 23 July 1969 [31 July 1968] 37116/69 Heading H4F [Also in Division G5] In a display device wherein light signals are modulated by varying the turbidity of a nematic crystal layer by applying an electrical signal thereto, as in Specification 1,167,486, half-tone effects are obtained by modulating the frequency of the electrical signal. The amplitude of the signal determines the response time. The apparatus described is substantially the same as that in said Specification.
GB3711669A 1968-07-31 1969-07-23 Liquid crystal display assembly having independent contrast and speed of response controls Expired GB1276523A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74905868A 1968-07-31 1968-07-31

Publications (1)

Publication Number Publication Date
GB1276523A true GB1276523A (en) 1972-06-01

Family

ID=25012055

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3711669A Expired GB1276523A (en) 1968-07-31 1969-07-23 Liquid crystal display assembly having independent contrast and speed of response controls

Country Status (9)

Country Link
JP (1) JPS4823456B1 (en)
BE (1) BE736824A (en)
CA (1) CA937664A (en)
DE (1) DE1938764B2 (en)
ES (1) ES369888A1 (en)
FR (1) FR2014788A1 (en)
GB (1) GB1276523A (en)
NL (1) NL6911634A (en)
SE (1) SE359177B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116805A (en) * 1982-02-18 1983-09-28 Casio Computer Co Ltd A liquid crystal television receiver

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2058104C2 (en) * 1970-11-26 1987-01-02 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Liq. crystal seven-segment display - has conductive spacers connecting outer metallisation regions on base layer to upper electrode
JPS5114434B1 (en) * 1971-07-29 1976-05-10
DE2151401C2 (en) * 1971-10-15 1982-03-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Liquid crystal matrix display unit - has control signal timing determined to avoid generation of cross effect
FR2275087A1 (en) * 1974-06-14 1976-01-09 Thomson Csf BLACK AND WHITE IMAGE REPRODUCTION DEVICE USING A MATERIAL WITH A SMECTIC PHASE AND TELETRANSMISSION AND TELEPHOTOOGRAPHY SYSTEM IMPLEMENTING THIS DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116805A (en) * 1982-02-18 1983-09-28 Casio Computer Co Ltd A liquid crystal television receiver
US4562478A (en) * 1982-02-18 1985-12-31 Casio Computer Co., Ltd. Liquid crystal television receiver

Also Published As

Publication number Publication date
JPS4823456B1 (en) 1973-07-13
FR2014788A1 (en) 1970-04-17
SE359177B (en) 1973-08-20
BE736824A (en) 1969-12-31
DE1938764B2 (en) 1972-02-17
DE1938764A1 (en) 1970-09-03
NL6911634A (en) 1970-02-03
CA937664A (en) 1973-11-27
ES369888A1 (en) 1971-12-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee