WO2007007277A3 - Backlight illumination system and display device - Google Patents

Backlight illumination system and display device Download PDF

Info

Publication number
WO2007007277A3
WO2007007277A3 PCT/IB2006/052341 IB2006052341W WO2007007277A3 WO 2007007277 A3 WO2007007277 A3 WO 2007007277A3 IB 2006052341 W IB2006052341 W IB 2006052341W WO 2007007277 A3 WO2007007277 A3 WO 2007007277A3
Authority
WO
WIPO (PCT)
Prior art keywords
reflective surface
reflective
angled
illumination system
backlight illumination
Prior art date
Application number
PCT/IB2006/052341
Other languages
French (fr)
Other versions
WO2007007277A2 (en
Inventor
Paulus G H Kosters
Original Assignee
Koninkl Philips Electronics Nv
Paulus G H Kosters
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 Koninkl Philips Electronics Nv, Paulus G H Kosters filed Critical Koninkl Philips Electronics Nv
Publication of WO2007007277A2 publication Critical patent/WO2007007277A2/en
Publication of WO2007007277A3 publication Critical patent/WO2007007277A3/en

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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The backlight illumination system has a plurality of parallel-arranged linear light sources (1, 1'), a light-emitting surface (5) and a reflector (10, 10') comprising a reflective region formed in symmetry on both sides of each light source. The reflective region includes: - a first reflective surface (11) close to the light source (1, 1') and arranged substantially horizontally, a second reflective surface (12) formed into either an angled or a concavely curved surface, a fourth reflective surface (14) formed into either an angled or a convexly curved surface, and a third reflective surface (13) formed into an angled surface, provided between the second and the fourth reflective surface, and arranged convexly with respect to the second reflective surface and concavely with respect to the fourth reflective surface. The third reflective surface is preferably oriented in such a way that incidence of direct light from the light source on the third reflective surface is prevented.
PCT/IB2006/052341 2005-07-14 2006-07-11 Backlight illumination system and display device WO2007007277A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05106465.7 2005-07-14
EP05106465 2005-07-14

Publications (2)

Publication Number Publication Date
WO2007007277A2 WO2007007277A2 (en) 2007-01-18
WO2007007277A3 true WO2007007277A3 (en) 2007-05-03

Family

ID=37609487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/052341 WO2007007277A2 (en) 2005-07-14 2006-07-11 Backlight illumination system and display device

Country Status (1)

Country Link
WO (1) WO2007007277A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188657A (en) * 1973-07-13 1980-02-12 Whiteway Manufacturing Co., Inc. Reflector and method of producing different, distinctive and predictable light patterns therefrom
US20030058635A1 (en) * 2001-06-15 2003-03-27 Hirokazu Matsui Backlight illuminator
US20030095407A1 (en) * 2001-11-19 2003-05-22 Chi Mei Optoelectronics Corp. Multi-angle reflector for use in a backlight unit
US20040062034A1 (en) * 2002-07-19 2004-04-01 Au Optronics Corp. Direct backlight module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188657A (en) * 1973-07-13 1980-02-12 Whiteway Manufacturing Co., Inc. Reflector and method of producing different, distinctive and predictable light patterns therefrom
US20030058635A1 (en) * 2001-06-15 2003-03-27 Hirokazu Matsui Backlight illuminator
US20030095407A1 (en) * 2001-11-19 2003-05-22 Chi Mei Optoelectronics Corp. Multi-angle reflector for use in a backlight unit
US20040062034A1 (en) * 2002-07-19 2004-04-01 Au Optronics Corp. Direct backlight module

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LIN F ED - MORREALE J SOCIETY FOR INFORMATION DISPLAY: "A NON-IMAGING CCFT COUPLER FOR LCD BACKLIGHTING", SID INTERNATIONAL SYMPOSIUM DIGEST OF APPLICATIONS PAPERS. SAN JOSE, JUNE 14 - 16, 1994, SANTA ANA, SID, US, vol. VOL. 25, 14 June 1994 (1994-06-14), pages 14 - 15, XP000492840 *

Also Published As

Publication number Publication date
WO2007007277A2 (en) 2007-01-18

Similar Documents

Publication Publication Date Title
MX2009011519A (en) Lighting assembly.
TWI263093B (en) Diffusion plate and direct backlight
ATE380971T1 (en) LIGHTING DEVICE
ATE282176T1 (en) LIGHTING DEVICE FOR NON-EMITTING DISPLAY
TW200608113A (en) Light reflector and surface light source device using the same
ATE527562T1 (en) COMPACT LIGHTING SYSTEM AND DISPLAY DEVICE
AU2003272345A1 (en) Luminaire device
TW200615665A (en) Line light source using light emitting diode and lens and backlight unit using the same
TW200520611A (en) Lighting device
WO2007106336A3 (en) Liquid crystal display systems including leds
TW200606525A (en) Backlight assembly with simplified structure and display device provided with the same
TW200716914A (en) Illumination device
TW200613855A (en) Direct-under backlight device
TW200615647A (en) Bottom-lit backlight module
TW200708853A (en) Light-guide plate and the backlight module having the same
WO2005006644A3 (en) Free-cavity double-diffusing indirect lighting luminaire
EP1628070A3 (en) Illumination device
US7033062B2 (en) Light source device with optical guiding member and planar light source device employing same
ATE547668T1 (en) LAMP WITH COVER PARTS
ATE292838T1 (en) ILLUMINATED SIGN WITH LAMP MASKS
CN102062883B (en) Lens, lighting device using same and street lamp
TW200613836A (en) Backlight module
TW200715006A (en) Light reflector and planar light source
EP1106905A3 (en) Luminaire
WO2007007277A3 (en) Backlight illumination system and display device

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 06780031

Country of ref document: EP

Kind code of ref document: A2