GB2438939A - Backlight optical system for a LCD panel, using a plurality of lenses and a prism sheet - Google Patents

Backlight optical system for a LCD panel, using a plurality of lenses and a prism sheet Download PDF

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Publication number
GB2438939A
GB2438939A GB0707953A GB0707953A GB2438939A GB 2438939 A GB2438939 A GB 2438939A GB 0707953 A GB0707953 A GB 0707953A GB 0707953 A GB0707953 A GB 0707953A GB 2438939 A GB2438939 A GB 2438939A
Authority
GB
United Kingdom
Prior art keywords
degrees
light
light source
prisms
optical system
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.)
Withdrawn
Application number
GB0707953A
Other languages
English (en)
Other versions
GB0707953D0 (en
Inventor
Sakae Tanaka
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.)
Mikuni Electron Co Ltd
Original Assignee
Mikuni Electron Co 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
Application filed by Mikuni Electron Co Ltd filed Critical Mikuni Electron Co Ltd
Priority to GB0816798A priority Critical patent/GB2452854A/en
Priority to GB0816796A priority patent/GB2453034A/en
Publication of GB0707953D0 publication Critical patent/GB0707953D0/en
Publication of GB2438939A publication Critical patent/GB2438939A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • 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
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)
  • Optical Elements Other Than Lenses (AREA)
GB0707953A 2006-06-06 2007-04-25 Backlight optical system for a LCD panel, using a plurality of lenses and a prism sheet Withdrawn GB2438939A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0816798A GB2452854A (en) 2006-06-06 2007-04-25 A prism sheet for a backlight of a LCD apparatus, having prisms of different vertex heights and angles
GB0816796A GB2453034A (en) 2006-06-06 2007-04-25 Field sequential driving method for an active matrix LCD apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006193405A JP4962884B2 (ja) 2006-06-06 2006-06-06 面光源装置ならびにプリズムシートと液晶表示装置

Publications (2)

Publication Number Publication Date
GB0707953D0 GB0707953D0 (en) 2007-05-30
GB2438939A true GB2438939A (en) 2007-12-12

Family

ID=38135383

Family Applications (3)

Application Number Title Priority Date Filing Date
GB0707953A Withdrawn GB2438939A (en) 2006-06-06 2007-04-25 Backlight optical system for a LCD panel, using a plurality of lenses and a prism sheet
GB0816798A Withdrawn GB2452854A (en) 2006-06-06 2007-04-25 A prism sheet for a backlight of a LCD apparatus, having prisms of different vertex heights and angles
GB0816796A Withdrawn GB2453034A (en) 2006-06-06 2007-04-25 Field sequential driving method for an active matrix LCD apparatus

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB0816798A Withdrawn GB2452854A (en) 2006-06-06 2007-04-25 A prism sheet for a backlight of a LCD apparatus, having prisms of different vertex heights and angles
GB0816796A Withdrawn GB2453034A (en) 2006-06-06 2007-04-25 Field sequential driving method for an active matrix LCD apparatus

Country Status (6)

Country Link
US (1) US20070279352A1 (https=)
JP (1) JP4962884B2 (https=)
KR (1) KR100901466B1 (https=)
CN (4) CN101488331B (https=)
GB (3) GB2438939A (https=)
TW (2) TW200745622A (https=)

Cited By (1)

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WO2009053887A3 (en) * 2007-10-26 2009-06-11 Koninkl Philips Electronics Nv Illumination system

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JP2012103420A (ja) * 2010-11-09 2012-05-31 Panasonic Liquid Crystal Display Co Ltd 液晶表示装置
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US10048429B2 (en) * 2013-09-26 2018-08-14 The Regents Of The University Of California Illuminator with adjustable beam direction and divergence
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CN104238182B (zh) * 2014-09-30 2017-04-05 深圳市华星光电技术有限公司 液晶显示装置
CN104238183A (zh) * 2014-09-30 2014-12-24 深圳市华星光电技术有限公司 液晶显示装置
CN104216167B (zh) * 2014-09-30 2017-02-15 深圳市华星光电技术有限公司 液晶显示装置
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CN101086580A (zh) 2007-12-12
GB0707953D0 (en) 2007-05-30
CN101488331B (zh) 2012-10-10
US20070279352A1 (en) 2007-12-06
CN101937150B (zh) 2012-01-04
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TWI334036B (https=) 2010-12-01
TW200745622A (en) 2007-12-16
KR100901466B1 (ko) 2009-06-08
GB2452854A (en) 2009-03-18
TW201116859A (en) 2011-05-16
CN101488331A (zh) 2009-07-22
CN100568069C (zh) 2009-12-09
KR20070116720A (ko) 2007-12-11
GB0816798D0 (en) 2008-10-22
GB0816796D0 (en) 2008-10-22
GB2453034A (en) 2009-03-25
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CN101937150A (zh) 2011-01-05
JP4962884B2 (ja) 2012-06-27

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