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WO2006048393A3 - Time display device - Google Patents

Time display device Download PDF

Info

Publication number
WO2006048393A3
WO2006048393A3 PCT/EP2005/055543 EP2005055543W WO2006048393A3 WO 2006048393 A3 WO2006048393 A3 WO 2006048393A3 EP 2005055543 W EP2005055543 W EP 2005055543W WO 2006048393 A3 WO2006048393 A3 WO 2006048393A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
real time
driving circuit
backlight driving
background illumination
Prior art date
Application number
PCT/EP2005/055543
Other languages
French (fr)
Other versions
WO2006048393A2 (en
Inventor
Wai Fai Ng
Wai Keung Ho
Cho Kiu Wong
Original Assignee
Thomson Licensing
Wai Fai Ng
Wai Keung Ho
Cho Kiu Wong
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 Thomson Licensing, Wai Fai Ng, Wai Keung Ho, Cho Kiu Wong filed Critical Thomson Licensing
Publication of WO2006048393A2 publication Critical patent/WO2006048393A2/en
Publication of WO2006048393A3 publication Critical patent/WO2006048393A3/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0082—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08
    • G04G9/0094—Visual time or date indication means by building-up characters using a combination of indicating elements and by selecting desired characters out of a number of characters or by selecting indicating elements the positions of which represents the time, i.e. combinations of G04G9/02 and G04G9/08 using light valves, e.g. liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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
    • G02F1/133621—Illuminating devices providing coloured light
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0005—Transmission of control signals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control 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
    • G09G3/34—Control 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
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Electric Clocks (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)

Abstract

A display device includes a real time clock circuit, a liquid crystal display panel, a background illumination device, a backlight driving circuit, a power supply, and a main control unit electrically connected with the backlight driving circuit and the power supply, wherein the liquid crystal display panel includes at least one zone for displaying of the real time information, the background illumination device includes a plurality of light-emitting devices, specifically at least two light- emitting devices having different colours, the backlight driving circuit includes a plurality of modulators, each of which is electrically connected to an associated light-emitting device in order to continuously control the light intensity of the light-emitting device as a function of time. Advantageously, the light colour and intensity of the entire background illumination device of the display device is capable of being varied gradually or progressively as a function of real time.
PCT/EP2005/055543 2004-11-02 2005-10-25 Time display device WO2006048393A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200420014188.7 2004-11-02
CN 200420014188 CN2768052Y (en) 2004-11-02 2004-11-02 Liquid crystal display clock

Publications (2)

Publication Number Publication Date
WO2006048393A2 WO2006048393A2 (en) 2006-05-11
WO2006048393A3 true WO2006048393A3 (en) 2006-09-21

Family

ID=36130065

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/055543 WO2006048393A2 (en) 2004-11-02 2005-10-25 Time display device

Country Status (2)

Country Link
CN (1) CN2768052Y (en)
WO (1) WO2006048393A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101501391B (en) 2006-07-03 2011-10-12 诺基亚公司 Changing graphics in an apparatus including user interface illumination
US20080129719A1 (en) * 2006-12-04 2008-06-05 Marten Andreas Jonsson Electronic device and method for controlling the illumination of a display and/or a keypad thereof
JP2010181487A (en) * 2009-02-03 2010-08-19 Sanyo Electric Co Ltd Display device
CN101819405B (en) * 2010-01-13 2013-07-03 深圳市强大实业有限公司 Electronic clock or watch with changeable display color
CN101916549A (en) * 2010-07-22 2010-12-15 中兴通讯股份有限公司 Method and device for controlling screen backlight
CN101950154B (en) * 2010-09-08 2011-12-14 周大庆 Multifunctional environment stimulation device
CN104156052B (en) * 2014-07-23 2016-09-14 深圳市金立通信设备有限公司 A kind of management method of desktop real-time clock
CN107749288B (en) * 2017-11-21 2020-04-28 深圳市华星光电技术有限公司 Mura compensation method of liquid crystal display device and liquid crystal display device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579460A (en) * 1984-05-17 1986-04-01 Shannon Thomas D Synchronous world clock
FR2639753A1 (en) * 1988-11-16 1990-06-01 Vuarnesson Bernard Apparatus for reproducing the apparent vision of a heavenly body
US5245590A (en) * 1992-07-10 1993-09-14 Galison William A Display of changing moon on watch face
WO2002025382A2 (en) * 2000-09-25 2002-03-28 Protein Limited Clock
FR2847044A1 (en) * 2002-11-13 2004-05-14 Gil Boivin Watch with liquid crystal display, has time-keeping circuit controlling the display of uniform color determined periodically

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4579460A (en) * 1984-05-17 1986-04-01 Shannon Thomas D Synchronous world clock
FR2639753A1 (en) * 1988-11-16 1990-06-01 Vuarnesson Bernard Apparatus for reproducing the apparent vision of a heavenly body
US5245590A (en) * 1992-07-10 1993-09-14 Galison William A Display of changing moon on watch face
WO2002025382A2 (en) * 2000-09-25 2002-03-28 Protein Limited Clock
FR2847044A1 (en) * 2002-11-13 2004-05-14 Gil Boivin Watch with liquid crystal display, has time-keeping circuit controlling the display of uniform color determined periodically

Also Published As

Publication number Publication date
CN2768052Y (en) 2006-03-29
WO2006048393A2 (en) 2006-05-11

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