HK1108493A1 - Surface light source capable of changing range of spread angle of exit light, and liquid crystal display apparatus using this surface light source - Google Patents

Surface light source capable of changing range of spread angle of exit light, and liquid crystal display apparatus using this surface light source

Info

Publication number
HK1108493A1
HK1108493A1 HK08102423.5A HK08102423A HK1108493A1 HK 1108493 A1 HK1108493 A1 HK 1108493A1 HK 08102423 A HK08102423 A HK 08102423A HK 1108493 A1 HK1108493 A1 HK 1108493A1
Authority
HK
Hong Kong
Prior art keywords
light source
surface light
liquid crystal
crystal display
display apparatus
Prior art date
Application number
HK08102423.5A
Other languages
English (en)
Inventor
Yasuhiro Daiku
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Publication of HK1108493A1 publication Critical patent/HK1108493A1/xx

Links

Classifications

    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • 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
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
HK08102423.5A 2005-12-21 2008-03-04 Surface light source capable of changing range of spread angle of exit light, and liquid crystal display apparatus using this surface light source HK1108493A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005368290A JP4600269B2 (ja) 2005-12-21 2005-12-21 液晶表示装置

Publications (1)

Publication Number Publication Date
HK1108493A1 true HK1108493A1 (en) 2008-05-09

Family

ID=38173218

Family Applications (1)

Application Number Title Priority Date Filing Date
HK08102423.5A HK1108493A1 (en) 2005-12-21 2008-03-04 Surface light source capable of changing range of spread angle of exit light, and liquid crystal display apparatus using this surface light source

Country Status (6)

Country Link
US (2) US20070139963A1 (ko)
JP (1) JP4600269B2 (ko)
KR (1) KR100840449B1 (ko)
CN (2) CN101635135B (ko)
HK (1) HK1108493A1 (ko)
TW (1) TWI349814B (ko)

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JP6754425B2 (ja) 2015-05-30 2020-09-09 レイア、インコーポレイテッドＬｅｉａ Ｉｎｃ． 車両監視システム
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Also Published As

Publication number Publication date
JP4600269B2 (ja) 2010-12-15
JP2007171500A (ja) 2007-07-05
US20070139963A1 (en) 2007-06-21
CN101029998A (zh) 2007-09-05
TW200730962A (en) 2007-08-16
CN101635135A (zh) 2010-01-27
CN101635135B (zh) 2012-07-25
KR100840449B1 (ko) 2008-06-20
US20090213300A1 (en) 2009-08-27
KR20070066912A (ko) 2007-06-27
CN100533228C (zh) 2009-08-26
TWI349814B (en) 2011-10-01
US8279164B2 (en) 2012-10-02

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20151221