WO2007060565A3 - Backlight of the scanning illumination type for flat panel displays - Google Patents

Backlight of the scanning illumination type for flat panel displays Download PDF

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Publication number
WO2007060565A3
WO2007060565A3 PCT/IB2006/054147 IB2006054147W WO2007060565A3 WO 2007060565 A3 WO2007060565 A3 WO 2007060565A3 IB 2006054147 W IB2006054147 W IB 2006054147W WO 2007060565 A3 WO2007060565 A3 WO 2007060565A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
window
reflector
source
backlight
Prior art date
Application number
PCT/IB2006/054147
Other languages
French (fr)
Other versions
WO2007060565A2 (en
Inventor
Erik Boonekamp
Rachid Kherrazi
Albertus A S Sluijterman
Original Assignee
Koninkl Philips Electronics Nv
Erik Boonekamp
Rachid Kherrazi
Albertus A S Sluijterman
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, Erik Boonekamp, Rachid Kherrazi, Albertus A S Sluijterman filed Critical Koninkl Philips Electronics Nv
Publication of WO2007060565A2 publication Critical patent/WO2007060565A2/en
Publication of WO2007060565A3 publication Critical patent/WO2007060565A3/en

Links

Classifications

    • 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
    • G02F1/133604—Direct backlight with lamps
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors

Abstract

A scanning illumination (backlight) system for a display, comprising a window (2) for emitting light in the direction of the display (3), a reflector (8), arranged parallel and opposite the window, a plurality of elongated light sources (6, 6', 6',...) arranged between to the window and the reflector (8), wherein each light source (6, 6', 6',...) is provided with a single reflective layer (7, 7', 7') at the side facing the window (2) which reflects back part of the light from the source to the reflector (8). The reflective layer (7, 7', 7') forms an elongated concave reflecting surface relative to the light source (6, 6', 6',.) and may or may not be in direct contact with the source. A (partly) reflective light barrier (9,9', 9', is arranged between a pair of neighbouring sources. The light barrier (partition) has a substantially rectangular shape and is substantially free from the absorption of light generated by the sources. The partitions reduce blur in video images by limiting the cross- talk between two neighbouring lamps.
PCT/IB2006/054147 2005-11-22 2006-11-07 Backlight of the scanning illumination type for flat panel displays WO2007060565A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05111079.9 2005-11-22
EP05111079 2005-11-22

Publications (2)

Publication Number Publication Date
WO2007060565A2 WO2007060565A2 (en) 2007-05-31
WO2007060565A3 true WO2007060565A3 (en) 2007-10-18

Family

ID=38067612

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/054147 WO2007060565A2 (en) 2005-11-22 2006-11-07 Backlight of the scanning illumination type for flat panel displays

Country Status (1)

Country Link
WO (1) WO2007060565A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005024502A1 (en) * 2003-09-04 2005-03-17 Koninklijke Philips Electronics N.V. Illumination system and display device
US20050135097A1 (en) * 2001-07-19 2005-06-23 Sharp Kabushiki Kaisha Lighting unit and liquid crystal display device including the lighting unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050135097A1 (en) * 2001-07-19 2005-06-23 Sharp Kabushiki Kaisha Lighting unit and liquid crystal display device including the lighting unit
WO2005024502A1 (en) * 2003-09-04 2005-03-17 Koninklijke Philips Electronics N.V. Illumination system and display device

Also Published As

Publication number Publication date
WO2007060565A2 (en) 2007-05-31

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