FR2618934B1 - Dispositif d'eclairage a source lumineuse arriere pour l'element d'affichage a cristaux liquides d'un instrument tel que compteur - Google Patents

Dispositif d'eclairage a source lumineuse arriere pour l'element d'affichage a cristaux liquides d'un instrument tel que compteur

Info

Publication number
FR2618934B1
FR2618934B1 FR888810191A FR8810191A FR2618934B1 FR 2618934 B1 FR2618934 B1 FR 2618934B1 FR 888810191 A FR888810191 A FR 888810191A FR 8810191 A FR8810191 A FR 8810191A FR 2618934 B1 FR2618934 B1 FR 2618934B1
Authority
FR
France
Prior art keywords
counter
instrument
liquid crystal
light source
crystal display
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.)
Expired - Lifetime
Application number
FR888810191A
Other languages
English (en)
Other versions
FR2618934A1 (fr
Inventor
Hiroshi Sekiguchi
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.)
Japan Aviation Electronics Industry Ltd
Original Assignee
Japan Aviation Electronics Industry 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 Japan Aviation Electronics Industry Ltd filed Critical Japan Aviation Electronics Industry Ltd
Publication of FR2618934A1 publication Critical patent/FR2618934A1/fr
Application granted granted Critical
Publication of FR2618934B1 publication Critical patent/FR2618934B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G02F1/133604—Direct backlight with lamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/10—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards
    • B60Q3/14—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards lighting through the surface to be illuminated
    • 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
    • G02F1/133613—Direct backlight characterized by the sequence of light sources

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Instrument Panels (AREA)
  • Details Of Measuring Devices (AREA)
FR888810191A 1987-07-31 1988-07-28 Dispositif d'eclairage a source lumineuse arriere pour l'element d'affichage a cristaux liquides d'un instrument tel que compteur Expired - Lifetime FR2618934B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62190344A JPS6435477A (en) 1987-07-31 1987-07-31 Backlight for instrument

Publications (2)

Publication Number Publication Date
FR2618934A1 FR2618934A1 (fr) 1989-02-03
FR2618934B1 true FR2618934B1 (fr) 1991-05-03

Family

ID=16256635

Family Applications (1)

Application Number Title Priority Date Filing Date
FR888810191A Expired - Lifetime FR2618934B1 (fr) 1987-07-31 1988-07-28 Dispositif d'eclairage a source lumineuse arriere pour l'element d'affichage a cristaux liquides d'un instrument tel que compteur

Country Status (3)

Country Link
JP (1) JPS6435477A (fr)
FR (1) FR2618934B1 (fr)
GB (1) GB2207496B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0797445B2 (ja) * 1988-04-28 1995-10-18 松下電器産業株式会社 透過形画像表示装置の照明装置
DE3940506A1 (de) * 1989-12-07 1991-06-13 Vdo Schindling Zwei parallel geschaltete, identische lampen aufweisende beleuchtungseinrichtung
FR2749065B1 (fr) * 1996-05-24 1998-07-24 Sagem Dispositif d'eclairage du type tableau de bord de vehicule automobile
TW426203U (en) * 1996-09-18 2001-03-11 Koninkl Philips Electronics Nv Backlight luminaire
DE69713870T2 (de) * 1996-09-18 2003-02-27 Koninkl Philips Electronics Nv Rückbeleuchtungsleuchte
WO1998057219A1 (fr) 1997-06-12 1998-12-17 Koninklijke Philips Electronics N.V. Unite de visualisation
KR100469343B1 (ko) * 2001-08-16 2005-02-02 엘지.필립스 엘시디 주식회사 백 라이트
KR100493386B1 (ko) 2002-12-18 2005-06-07 엘지.필립스 엘시디 주식회사 백 라이트 유닛

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59159129A (ja) * 1983-03-01 1984-09-08 Mitsubishi Electric Corp 透過形液晶表示装置
JPS60216435A (ja) * 1984-04-10 1985-10-29 Sharp Corp 平面状放電管
JPS6142850A (ja) * 1984-08-03 1986-03-01 Yamato Denshi Kk 平型照明器具用ガス封入体及びその製造方法
JPS62102226A (ja) * 1985-10-30 1987-05-12 Seiko Epson Corp 液晶テレビ装置の照明構造

Also Published As

Publication number Publication date
GB2207496A (en) 1989-02-01
JPS6435477A (en) 1989-02-06
GB8817494D0 (en) 1988-08-24
FR2618934A1 (fr) 1989-02-03
GB2207496B (en) 1991-03-27

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Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse
ST Notification of lapse