JPS62234133A - Flat display panel - Google Patents

Flat display panel

Info

Publication number
JPS62234133A
JPS62234133A JP61078640A JP7864086A JPS62234133A JP S62234133 A JPS62234133 A JP S62234133A JP 61078640 A JP61078640 A JP 61078640A JP 7864086 A JP7864086 A JP 7864086A JP S62234133 A JPS62234133 A JP S62234133A
Authority
JP
Japan
Prior art keywords
liquid crystal
light emitting
emitting diodes
grating
crystal display
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
JP61078640A
Inventor
Yukisachi Satou
Original Assignee
Nec 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 Nec Corp filed Critical Nec Corp
Priority to JP61078640A priority Critical patent/JPS62234133A/en
Publication of JPS62234133A publication Critical patent/JPS62234133A/en
Application status is Pending legal-status Critical

Links

Classifications

    • 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
    • G09G3/3406Control of illumination source
    • G09G3/342Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs

Abstract

PURPOSE:To use a liquid crystal display panel to be a non-emitting body on a dark position by arraying light emitting diodes under a transmission type dot matrix liquid crystal panel in grating mode and turning on the light emitting diodes sequentially one by one at a specific period with time division. CONSTITUTION:Square light emitting diodes 2 having integer times the size of a liquid crystal dot are tightly arrayed by e.g. N lines X M rows under the transmission type dot matrix liquid crystal display panel. The arrayed light emitting diodes 2 are connected like a grating by a circuit, a clock generated from a clock generator 4 is divided at its frequency by a frequency divider 5, the clocks outputted from the frequency divider 5 is counted up by an N-digit counter 6, the signal from the N-digit counter is received by a line selector circuit 7 to select the wiring of the line direction of the grating-like circuit consisting of the light emitting diodes D(0, 0)-D(N-1, M-1). An M-digit counter 8 selects the wiring of the column direction of the grating-like circuit. Consequently, the diodes are sequentially turned on with time division synchronously with the liquid crystal display of liquid crystal display panel.
JP61078640A 1986-04-04 1986-04-04 Flat display panel Pending JPS62234133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61078640A JPS62234133A (en) 1986-04-04 1986-04-04 Flat display panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61078640A JPS62234133A (en) 1986-04-04 1986-04-04 Flat display panel

Publications (1)

Publication Number Publication Date
JPS62234133A true JPS62234133A (en) 1987-10-14

Family

ID=13667461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61078640A Pending JPS62234133A (en) 1986-04-04 1986-04-04 Flat display panel

Country Status (1)

Country Link
JP (1) JPS62234133A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7731367B2 (en) 2001-02-27 2010-06-08 Dolby Laboratories Licensing Corporation HDR displays and control systems therefor
US8199281B2 (en) 2008-12-29 2012-06-12 Funai Electric Co., Ltd. Backlight of liquid crystal display device
US8890799B2 (en) 2002-03-13 2014-11-18 Dolby Laboratories Licensing Corporation Display with red, green, and blue light sources
US9099046B2 (en) 2009-02-24 2015-08-04 Dolby Laboratories Licensing Corporation Apparatus for providing light source modulation in dual modulator displays
US9711111B2 (en) 2008-06-25 2017-07-18 Dolby Laboratories Licensing Corporation High dynamic range display using LED backlighting, stacked optical films, and LCD drive signals based on a low resolution light field simulation

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7731367B2 (en) 2001-02-27 2010-06-08 Dolby Laboratories Licensing Corporation HDR displays and control systems therefor
US10261405B2 (en) 2001-02-27 2019-04-16 Dolby Laboratories Licensing Corporation Projection displays
US8277056B2 (en) 2001-02-27 2012-10-02 Dolby Laboratories Licensing Corporation Locally dimmed display
US9804487B2 (en) 2001-02-27 2017-10-31 Dolby Laboratories Licensing Corporation Projection displays
US9412337B2 (en) 2001-02-27 2016-08-09 Dolby Laboratories Licensing Corporation Projection displays
US8890799B2 (en) 2002-03-13 2014-11-18 Dolby Laboratories Licensing Corporation Display with red, green, and blue light sources
US9270956B2 (en) 2002-03-13 2016-02-23 Dolby Laboratories Licensing Corporation Image display
US10416480B2 (en) 2002-03-13 2019-09-17 Dolby Laboratories Licensing Corporation Image display
US9711111B2 (en) 2008-06-25 2017-07-18 Dolby Laboratories Licensing Corporation High dynamic range display using LED backlighting, stacked optical films, and LCD drive signals based on a low resolution light field simulation
US8199281B2 (en) 2008-12-29 2012-06-12 Funai Electric Co., Ltd. Backlight of liquid crystal display device
US9099046B2 (en) 2009-02-24 2015-08-04 Dolby Laboratories Licensing Corporation Apparatus for providing light source modulation in dual modulator displays
US9911389B2 (en) 2009-02-24 2018-03-06 Dolby Laboratories Licensing Corporation Locally dimmed quantum dot display
US10373574B2 (en) 2009-02-24 2019-08-06 Dolby Laboratories Licensing Corporation Locally dimmed quantum dot display
US9478182B2 (en) 2009-02-24 2016-10-25 Dolby Laboratories Licensing Corporation Locally dimmed quantum dots (nano-crystal) based display

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