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FR3062485B1 - DISPLAY DEVICE - Google Patents

DISPLAY DEVICE Download PDF

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Publication number
FR3062485B1
FR3062485B1 FR1750900A FR1750900A FR3062485B1 FR 3062485 B1 FR3062485 B1 FR 3062485B1 FR 1750900 A FR1750900 A FR 1750900A FR 1750900 A FR1750900 A FR 1750900A FR 3062485 B1 FR3062485 B1 FR 3062485B1
Authority
FR
France
Prior art keywords
screen
display device
plate
light
illuminate
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.)
Active
Application number
FR1750900A
Other languages
French (fr)
Other versions
FR3062485A1 (en
Inventor
Michael Irzyk
Vincent Girod
Thibault Cabana
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.)
Valeo Comfort and Driving Assistance SAS
Original Assignee
Valeo Comfort and Driving Assistance SAS
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 Valeo Comfort and Driving Assistance SAS filed Critical Valeo Comfort and Driving Assistance SAS
Priority to FR1750900A priority Critical patent/FR3062485B1/en
Priority to PCT/EP2018/052454 priority patent/WO2018141823A1/en
Priority to EP18701768.6A priority patent/EP3577390A1/en
Publication of FR3062485A1 publication Critical patent/FR3062485A1/en
Application granted granted Critical
Publication of FR3062485B1 publication Critical patent/FR3062485B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
    • 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
    • G02F1/1323—Arrangements for providing a switchable viewing angle
    • 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
    • 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
    • G02F1/133626—Illuminating devices providing two modes of illumination, e.g. day-night

Landscapes

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

Abstract

L'invention concerne un dispositif d'affichage (10) comprenant : - un écran (13) présentant une transmission optique commandable, et - un premier ensemble de rétro-éclairage (11) configuré pour émettre vers l'écran un premier rayonnement lumineux de manière à éclairer, après transmission par l'écran, un premier champ d'éclairage. Selon l'invention, le dispositif d'affichage comprend un deuxième ensemble de rétro-éclairage (12), situé entre l'écran et le premier dispositif de rétro-éclairage, qui comporte : - un guide de lumière réalisé au moyen d'une plaque (122) au moins partiellement transparente, et - une deuxième source de lumière (112) disposée en périphérie de la plaque, le guide de lumière étant configuré pour qu'un deuxième rayonnement lumineux reçu de la deuxième source de lumière sorte au moins en partie de ladite plaque en direction de l'écran pour éclairer, après traversée de l'écran, un deuxième champ d'éclairage au moins partiellement disjoint du premier champ d'éclairage.The invention relates to a display device (10) comprising: - a screen (13) having a controllable optical transmission, and - a first backlight assembly (11) configured to emit towards the screen a first light radiation of so as to illuminate, after transmission by the screen, a first lighting field. According to the invention, the display device comprises a second backlight assembly (12), located between the screen and the first backlight device, which comprises: - a light guide produced by means of a plate (122) at least partially transparent, and - a second light source (112) disposed at the periphery of the plate, the light guide being configured so that a second light radiation received from the second light source exits at least in part of said plate in the direction of the screen to illuminate, after passing through the screen, a second illumination field at least partially separate from the first illumination field.

FR1750900A 2017-02-02 2017-02-02 DISPLAY DEVICE Active FR3062485B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1750900A FR3062485B1 (en) 2017-02-02 2017-02-02 DISPLAY DEVICE
PCT/EP2018/052454 WO2018141823A1 (en) 2017-02-02 2018-01-31 Display unit
EP18701768.6A EP3577390A1 (en) 2017-02-02 2018-01-31 Display unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1750900 2017-02-02
FR1750900A FR3062485B1 (en) 2017-02-02 2017-02-02 DISPLAY DEVICE

Publications (2)

Publication Number Publication Date
FR3062485A1 FR3062485A1 (en) 2018-08-03
FR3062485B1 true FR3062485B1 (en) 2021-01-08

Family

ID=58739096

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1750900A Active FR3062485B1 (en) 2017-02-02 2017-02-02 DISPLAY DEVICE

Country Status (3)

Country Link
EP (1) EP3577390A1 (en)
FR (1) FR3062485B1 (en)
WO (1) WO2018141823A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE49613E1 (en) 2015-11-27 2023-08-15 Sioptica Gmbh Screen for a free and restricted operating mode
DE102017006285A1 (en) 2017-06-30 2019-01-03 Sioptica Gmbh Screen for a free and restricted view mode
DE102017007669A1 (en) 2017-08-14 2019-02-14 Sioptica Gmbh Free and restricted viewing mode screen and use of same
DE102021104330A1 (en) 2021-02-23 2022-08-25 Bayerische Motoren Werke Aktiengesellschaft User interface, means of transport and steering wheel for a means of transport with a transparent display device
CN216848405U (en) * 2022-03-11 2022-06-28 中强光电股份有限公司 Backlight module and display device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735177C2 (en) * 1997-08-14 1999-07-01 Mannesmann Vdo Ag Display unit provided for fastening in a motor vehicle
JP3908241B2 (en) * 2004-06-24 2007-04-25 オリンパス株式会社 Video display device
TWI263845B (en) * 2004-11-19 2006-10-11 Au Optronics Corp Viewing-angle adjustable liquid crystal display and method of the same
TWI312883B (en) * 2005-01-24 2009-08-01 Au Optronics Corp Backlight module for 3d display device and method for displaying 3d images utilizing the same
JP4748684B2 (en) * 2006-11-15 2011-08-17 シチズン電子株式会社 Backlight unit and display device
US20120235891A1 (en) * 2009-12-02 2012-09-20 Rena Nishitani Liquid crystal display device
EP3090309B1 (en) * 2014-02-17 2017-05-31 Sioptica GmbH Switchable backlight device and utilisation thereof
CN105487292A (en) * 2016-01-15 2016-04-13 京东方科技集团股份有限公司 Backlight module, display device and driving method thereof

Also Published As

Publication number Publication date
WO2018141823A1 (en) 2018-08-09
EP3577390A1 (en) 2019-12-11
FR3062485A1 (en) 2018-08-03

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