CA2534667A1 - Monochromatic field sequential liquid crystal display - Google Patents

Monochromatic field sequential liquid crystal display Download PDF

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Publication number
CA2534667A1
CA2534667A1 CA002534667A CA2534667A CA2534667A1 CA 2534667 A1 CA2534667 A1 CA 2534667A1 CA 002534667 A CA002534667 A CA 002534667A CA 2534667 A CA2534667 A CA 2534667A CA 2534667 A1 CA2534667 A1 CA 2534667A1
Authority
CA
Canada
Prior art keywords
backlights
liquid crystal
crystal display
field sequential
color
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.)
Granted
Application number
CA002534667A
Other languages
French (fr)
Other versions
CA2534667C (en
Inventor
Mihal Lazaridis
Robert J. Lowles
Jason T. Griffin
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.)
BlackBerry Ltd
Original Assignee
Research In Motion Limited
Mihal Lazaridis
Robert J. Lowles
Jason T. Griffin
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 Research In Motion Limited, Mihal Lazaridis, Robert J. Lowles, Jason T. Griffin filed Critical Research In Motion Limited
Publication of CA2534667A1 publication Critical patent/CA2534667A1/en
Application granted granted Critical
Publication of CA2534667C publication Critical patent/CA2534667C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • 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
    • G02F1/133622—Colour sequential illumination
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0235—Field-sequential colour display
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A device and a method are provided for establishing a monochromatic background light source in an electronic device with a field sequential liquid crystal display. The device and method provide for the continuous illumination of one or more of a plurality of color backlights of a field sequential liquid crystal display to provide a monochromatic source of light behind the liquid crystal layer of the display. The intensities of the one or more of the plurality of color backlights may be selected to achieve a user selected color, or the intensities may be chosen to reduce power consumption. The monochromatic mode may be selected while in another mode of operation.

Claims (17)

1. An electronic device, comprising:
a field sequential liquid crystal display with a liquid crystal layer and a plurality of color backlights; and a control module for controlling the continuous illumination of one or more of the plurality of color backlights to provide a monochromatic source of light behind the liquid crystal layer.
2. The device of claim 1, wherein individual intensities of the one or more of the plurality of backlights are selected to achieve a user selected color.
3. The device of claim 1, wherein individual intensities of the one or more of the plurality of backlights are minimized while providing a user acceptable contrast level.
4. The device of claim 1, wherein a output intensity of one or more of the plurality of backlights is set to zero.
5. The device of claim 1, wherein only one backlight is illuminated.
6. The device of claim 5, wherein the backlight with the lowest power consumption is selectively illuminated.
7. The device of claim 1, wherein the continuous illumination of the one or more of the plurality of backlights is one of a plurality of display modes that can be selected by the user.
8. The device of claim 1, wherein the frame rate frequency of the field sequential liquid crystal display is set to between about 24 and about 70 Hertz.
9. The device of claim 1, wherein the frame rate frequency of the field sequential liquid crystal display is set to between about 24 and about 40 Hertz.
10. A method for providing a monochromatic background display mode in an electronic device having a field sequential liquid crystal display with a plurality of color backlights, comprising:
continuously illuminating one or more of the plurality of color backlights of the field sequential liquid crystal display.
11. The method of claim 10, wherein individual intensities of the one or more of the plurality of backlights are selected to achieve a user selected color.
12. The method of claim 10, wherein the individual intensities of the one or more of the plurality of backlights are minimized while providing a user acceptable contrast level.
13. The method of claim 10, wherein the output intensity of one or more of the plurality of backlights is set to zero.
14. The method of claim 10, wherein only one backlight is illuminated.
15. The method of claim 14, wherein the backlight with the lowest power consumption is selectively illuminated.
16. The method of claim 10, wherein the continuous illumination of one or more of the plurality of backlights is one of a plurality of display modes that can be selected by the user.
17. An electronic device, comprising:
a field sequential liquid crystal display with a liquid crystal layer and a plurality of color backlights; and a control module for controlling the continuous illumination of one or more of the plurality of backlights to provide a monochromatic source of light behind the liquid crystal layer wherein the frame rate frequency of the field sequential liquid crystal display is set to between about 24 and about 40 Hertz, and the individual intensities of the one or more of the plurality of backlights are selected to achieve a user selected color.
CA2534667A 2003-08-12 2004-02-25 Monochromatic field sequential liquid crystal display Expired - Lifetime CA2534667C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US49436803P 2003-08-12 2003-08-12
US60/494,368 2003-08-12
PCT/CA2004/000278 WO2005015531A1 (en) 2003-08-12 2004-02-25 Monochromatic field sequential liquid crystal display

Publications (2)

Publication Number Publication Date
CA2534667A1 true CA2534667A1 (en) 2005-02-17
CA2534667C CA2534667C (en) 2011-05-03

Family

ID=34135336

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2534667A Expired - Lifetime CA2534667C (en) 2003-08-12 2004-02-25 Monochromatic field sequential liquid crystal display

Country Status (4)

Country Link
US (1) US7233310B2 (en)
EP (1) EP1654721B1 (en)
CA (1) CA2534667C (en)
WO (1) WO2005015531A1 (en)

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KR100741963B1 (en) * 2003-11-27 2007-07-23 삼성에스디아이 주식회사 Liquid Crystal Display and Method of driving the same
US7347575B2 (en) * 2004-07-13 2008-03-25 Yazaki North America, Inc. Vehicle gauge with embedded driver information
JP2006041832A (en) * 2004-07-26 2006-02-09 Nec Saitama Ltd Portable radio terminal with switching function of indicator lighting
JP4527512B2 (en) * 2004-12-08 2010-08-18 Ｎｅｃ液晶テクノロジー株式会社 Liquid crystal display
US7427143B1 (en) 2005-06-30 2008-09-23 Yazaki North America, Inc. Instrument cluster with three-dimensional display
US20090059581A1 (en) * 2006-02-27 2009-03-05 Keiji Hayashi Display Device
US8154493B2 (en) * 2006-06-02 2012-04-10 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device, driving method of the same, and electronic device using the same
US7750821B1 (en) 2007-03-30 2010-07-06 Yazaki North America, Inc. System and method for instrument panel with color graphical display
US7571696B1 (en) 2007-06-19 2009-08-11 Yazaki North America, Inc. System and method for analog vehicle gauge with embedded driver information
US20100039366A1 (en) * 2008-08-18 2010-02-18 Rody Hardy Backlight display and method for a vehicle
US8132916B2 (en) 2008-12-12 2012-03-13 Carl Zeiss Meditec, Inc. High precision contrast ratio display for visual stimulus
US8581923B2 (en) * 2009-10-07 2013-11-12 Sharp Laboratories Of America, Inc. Temporal color liquid crystal display
CN102213854B (en) * 2010-04-09 2015-08-05 株式会社半导体能源研究所 Liquid crystal indicator and electronic equipment
FR2994759B1 (en) * 2012-08-27 2014-08-29 Astrium Sas DEVICE AND METHOD FOR STIMULATION OF OPTOELECTRONIC SENSOR
EP2779601B1 (en) * 2013-03-15 2017-11-29 BlackBerry Limited System and method for displaying visual notifications on an electronic device
US9599765B2 (en) 2013-03-15 2017-03-21 Blackberry Limited System and method for displaying visual notifications on an electronic device
CN113993328B (en) * 2021-11-24 2023-04-11 Oppo广东移动通信有限公司 Decoration, shell assembly and electronic equipment

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JPH1164820A (en) 1997-08-20 1999-03-05 Nec Corp Flat display device
WO2000034821A1 (en) * 1998-12-09 2000-06-15 Citizen Watch Co.,Ltd. Liquid crystal display
JP5254513B2 (en) 1999-06-21 2013-08-07 鴻海精密工業股▲ふん▼有限公司 Browsing system with display illumination and eyewear assembly having the same
US6496236B1 (en) * 2000-03-17 2002-12-17 Hewlett-Packard Company Multi-mode backlight for electronic device
US20010043177A1 (en) 2000-04-14 2001-11-22 Huston James R. System and method for color and grayscale drive methods for graphical displays utilizing analog controlled waveforms
JP4161574B2 (en) 2000-05-24 2008-10-08 株式会社日立製作所 Color / monochrome switchable portable terminal and display device
US6608614B1 (en) * 2000-06-22 2003-08-19 Rockwell Collins, Inc. Led-based LCD backlight with extended color space
US6744416B2 (en) * 2000-12-27 2004-06-01 Casio Computer Co., Ltd. Field sequential liquid crystal display apparatus
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US20030210221A1 (en) 2002-05-08 2003-11-13 Milivoje Aleksic Portable device for providing LCD display and method thereof

Also Published As

Publication number Publication date
CA2534667C (en) 2011-05-03
US20050035940A1 (en) 2005-02-17
WO2005015531A1 (en) 2005-02-17
EP1654721B1 (en) 2017-10-11
US7233310B2 (en) 2007-06-19
EP1654721A1 (en) 2006-05-10

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