GB2217089B - Display device - Google Patents

Display device

Info

Publication number
GB2217089B
GB2217089B GB8905095A GB8905095A GB2217089B GB 2217089 B GB2217089 B GB 2217089B GB 8905095 A GB8905095 A GB 8905095A GB 8905095 A GB8905095 A GB 8905095A GB 2217089 B GB2217089 B GB 2217089B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
display device
display
device
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 - Fee Related
Application number
GB8905095A
Other versions
GB8905095D0 (en )
GB2217089A (en )
Inventor
Sally Elizabeth Day
Ian Alexander Shanks
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.)
Emi PLC Thorn
EMI Group Ltd
Original Assignee
Emi PLC Thorn
EMI Group 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
Grant date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00Scanning details of television systems
    • H04N3/10Scanning details of television systems by means not exclusively optical-mechanical
    • H04N3/12Scanning details of television systems by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • H04N3/127Scanning details of television systems by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays using liquid crystals
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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
    • G02F1/13Devices 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
    • G02F1/137Devices 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 a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering
    • G02F1/139Devices 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 a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396Devices 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 a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • G02F1/1397Devices 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 a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell the twist being substantially higher than 90°, e.g. STN-, SBE-, OMI-LC cells
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3622Control of matrices with row and column drivers using a passive matrix
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007Display of intermediate tones
    • G09G3/2011Display of intermediate tones by amplitude modulation
GB8905095A 1988-03-28 1989-03-06 Display device Expired - Fee Related GB2217089B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8807333A GB8807333D0 (en) 1988-03-28 1988-03-28 Display device

Publications (3)

Publication Number Publication Date
GB8905095D0 GB8905095D0 (en) 1989-04-19
GB2217089A true GB2217089A (en) 1989-10-18
GB2217089B true GB2217089B (en) 1992-04-29

Family

ID=10634228

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8807333A Pending GB8807333D0 (en) 1988-03-28 1988-03-28 Display device
GB8905095A Expired - Fee Related GB2217089B (en) 1988-03-28 1989-03-06 Display device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8807333A Pending GB8807333D0 (en) 1988-03-28 1988-03-28 Display device

Country Status (2)

Country Link
JP (1) JPH0210313A (en)
GB (2) GB8807333D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0504816A1 (en) * 1991-03-18 1992-09-23 Michael Stalow A method to obtain grey scales and higher frame speed in liquid crystal displays, having steep slope of the electrooptical characteristic
JP2888382B2 (en) * 1991-05-15 1999-05-10 インターナショナル・ビジネス・マシーンズ・コーポレイション The liquid crystal display device and its driving method and a driving device
JPH0743134U (en) * 1993-12-20 1995-08-18 こだま軽器工業株式会社 Vacuum packaging machine
JPH1069260A (en) * 1996-08-26 1998-03-10 Buraito Kenkyusho:Kk Method for driving nematic liquid crystal
JP4486319B2 (en) * 2002-05-09 2010-06-23 三星電子株式会社Samsung Electronics Co.,Ltd. Gray-scale voltage generating device and the gradation voltage generating method and reflected using the same - transmission type liquid crystal display device

Also Published As

Publication number Publication date Type
GB8905095D0 (en) 1989-04-19 grant
JPH0210313A (en) 1990-01-16 application
GB2217089A (en) 1989-10-18 application
GB8807333D0 (en) 1988-04-27 grant

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Legal Events

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

Effective date: 19930306