TW461981B - Back light - Google Patents

Back light Download PDF

Info

Publication number
TW461981B
TW461981B TW087107794A TW87107794A TW461981B TW 461981 B TW461981 B TW 461981B TW 087107794 A TW087107794 A TW 087107794A TW 87107794 A TW87107794 A TW 87107794A TW 461981 B TW461981 B TW 461981B
Authority
TW
Taiwan
Prior art keywords
light
reflector
edge
diffuser
light guide
Prior art date
Application number
TW087107794A
Other languages
English (en)
Chinese (zh)
Inventor
Shoichi Ueda
Hideki Miyauchi
Original Assignee
Nippon Electric Co
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 Nippon Electric Co filed Critical Nippon Electric Co
Application granted granted Critical
Publication of TW461981B publication Critical patent/TW461981B/zh

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
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
TW087107794A 1997-06-18 1998-05-20 Back light TW461981B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16090397 1997-06-18
JP9312195A JP3067717B2 (ja) 1997-06-18 1997-11-13 バックライト

Publications (1)

Publication Number Publication Date
TW461981B true TW461981B (en) 2001-11-01

Family

ID=26487236

Family Applications (1)

Application Number Title Priority Date Filing Date
TW087107794A TW461981B (en) 1997-06-18 1998-05-20 Back light

Country Status (3)

Country Link
JP (1) JP3067717B2 (ko)
KR (1) KR19990006807A (ko)
TW (1) TW461981B (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020047653A (ko) * 2000-12-13 2002-06-22 이승철 조명장치
JP4707260B2 (ja) * 2001-05-14 2011-06-22 東芝モバイルディスプレイ株式会社 照明ユニット及びその製造方法並びに照明ユニットを用いた液晶表示装置
KR100413486B1 (ko) * 2001-07-10 2003-12-31 엘지.필립스 엘시디 주식회사 액정표시장치(ｌｃｄ)의 백라이트 어셈블리
KR100541737B1 (ko) 2003-10-09 2006-01-11 삼성전자주식회사 휴대용 컴퓨터
JP2009048152A (ja) * 2007-07-23 2009-03-05 Toppan Printing Co Ltd 光学シートおよび光学シートを用いたバックライトユニット、ディスプレイ装置
JP5478210B2 (ja) * 2009-11-18 2014-04-23 シチズンファインテックミヨタ株式会社 反射型液晶表示装置
JP2013171619A (ja) * 2012-02-17 2013-09-02 Sharp Corp 表示装置及びテレビ受信装置

Also Published As

Publication number Publication date
JPH1172624A (ja) 1999-03-16
KR19990006807A (ko) 1999-01-25
JP3067717B2 (ja) 2000-07-24

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Legal Events

Date Code Title Description
GD4A Issue of patent certificate for granted invention patent
MK4A Expiration of patent term of an invention patent