[go: up one dir, main page]

WO2008099645A1 - Illumination device and liquid crystal display device - Google Patents

Illumination device and liquid crystal display device Download PDF

Info

Publication number
WO2008099645A1
WO2008099645A1 PCT/JP2008/050871 JP2008050871W WO2008099645A1 WO 2008099645 A1 WO2008099645 A1 WO 2008099645A1 JP 2008050871 W JP2008050871 W JP 2008050871W WO 2008099645 A1 WO2008099645 A1 WO 2008099645A1
Authority
WO
WIPO (PCT)
Prior art keywords
bulbs
liquid crystal
crystal display
display device
illumination device
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.)
Ceased
Application number
PCT/JP2008/050871
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuaki Ohkubo
Kiyoshi Hashimotodani
Satoshi Kominami
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.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial 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 Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Publication of WO2008099645A1 publication Critical patent/WO2008099645A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A backlight device (21) having inner electrodes (35) arranged inside bulbs (32), respectively, and parallelly connected to a lighting circuit (40) for outputting an AC drive voltage, and the backlight device (21) also having an external electrode (36) placed outside the bulbs (32) with an air gap (41) between the electrode and the bulbs and grounded. Holding members (43A-43C) hold the bulbs (32) such that the distances (P1, P2) between adjacent bulbs (32) regularly vary in the direction of the arrangement of the bulbs (32).
PCT/JP2008/050871 2007-02-15 2008-01-23 Illumination device and liquid crystal display device Ceased WO2008099645A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-034946 2007-02-15
JP2007034946 2007-02-15

Publications (1)

Publication Number Publication Date
WO2008099645A1 true WO2008099645A1 (en) 2008-08-21

Family

ID=39689891

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/050871 Ceased WO2008099645A1 (en) 2007-02-15 2008-01-23 Illumination device and liquid crystal display device

Country Status (1)

Country Link
WO (1) WO2008099645A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002082626A (en) * 2000-09-08 2002-03-22 Sharp Corp Backlight device for display panel
JP2003242801A (en) * 2002-02-13 2003-08-29 Ohtsu Tire & Rubber Co Ltd :The Vertical back light and film viewer
JP2004287226A (en) * 2003-03-24 2004-10-14 Tama Electric Co Ltd Backlight device and liquid crystal display device
WO2005022586A1 (en) * 2003-08-29 2005-03-10 Matsushita Electric Industrial Co., Ltd. Light source device, illumination device, and liquid crystal display device
JP2006024549A (en) * 2004-07-09 2006-01-26 Au Optronics Corp Lamp holder
JP2006286341A (en) * 2005-03-31 2006-10-19 Sharp Corp Fluorescent tube support, direct backlight device using the same, and liquid crystal display device using the direct backlight device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002082626A (en) * 2000-09-08 2002-03-22 Sharp Corp Backlight device for display panel
JP2003242801A (en) * 2002-02-13 2003-08-29 Ohtsu Tire & Rubber Co Ltd :The Vertical back light and film viewer
JP2004287226A (en) * 2003-03-24 2004-10-14 Tama Electric Co Ltd Backlight device and liquid crystal display device
WO2005022586A1 (en) * 2003-08-29 2005-03-10 Matsushita Electric Industrial Co., Ltd. Light source device, illumination device, and liquid crystal display device
JP2006024549A (en) * 2004-07-09 2006-01-26 Au Optronics Corp Lamp holder
JP2006286341A (en) * 2005-03-31 2006-10-19 Sharp Corp Fluorescent tube support, direct backlight device using the same, and liquid crystal display device using the direct backlight device

Similar Documents

Publication Publication Date Title
WO2008099532A1 (en) Illuminating apparatus for display device, display device, and television receiver
WO2008150668A4 (en) Self illuminating electro wetting display
TW200740281A (en) Lighting device with controllable light intensity
EP2728572A3 (en) Backlight unit and display device
EP1914590A3 (en) Display panel
TW200615662A (en) Backlight assembly and liquid crystal display device having the same
TW200612150A (en) Backlight assembly and display device having the same
CN203880505U (en) LED light bar, backlight module group, and display device
ATE492832T1 (en) ELECTROLUMINESCENCE DISPLAYS
TW200714995A (en) Backlight module and liquid crystal display device incorporating the same
WO2008099645A1 (en) Illumination device and liquid crystal display device
TW200638132A (en) Backlight assembly and liquid crystal display apparatus having the same
US20100061110A1 (en) Lighting system with a flat lamp and a frame
TW200608110A (en) Flat fluorescent lamp and liquid crystal display device having the same
TW200643857A (en) Liquid crystal display, backlight module and lamp driving apparatus thereof
US20090021949A1 (en) Lighting System Having a Flat Lamp, and a Frame with a Section which can be Folded
EP1892564A3 (en) Backlight assembly and liquid crystal display apparatus having the same
TW200612159A (en) Lighting apparatus and liquid crystal display
EP1367865A3 (en) Discharge lamp device and backlight using the same
KR100831586B1 (en) Advertising display device using LED light source
TW200728836A (en) Fluorescent lamp with external electrodes and backlight module using the same
TW200602738A (en) Back light module for use in a dual panel display
TW200727019A (en) Replaceable backlight module and liquid crystal display
TWI263839B (en) Backlight module and display device
TW200728853A (en) Flat panel display and backlight module thereof

Legal Events

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

Ref document number: 08703712

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08703712

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP