FR3078767B1 - Dispositif de retro-eclairage et dispositif d'affichage associe - Google Patents

Dispositif de retro-eclairage et dispositif d'affichage associe Download PDF

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Publication number
FR3078767B1
FR3078767B1 FR1852075A FR1852075A FR3078767B1 FR 3078767 B1 FR3078767 B1 FR 3078767B1 FR 1852075 A FR1852075 A FR 1852075A FR 1852075 A FR1852075 A FR 1852075A FR 3078767 B1 FR3078767 B1 FR 3078767B1
Authority
FR
France
Prior art keywords
cells
display device
array
light beams
backlight
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
FR1852075A
Other languages
English (en)
Other versions
FR3078767A1 (fr
Inventor
Thibault Cabana
Vincent Girod
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 FR1852075A priority Critical patent/FR3078767B1/fr
Publication of FR3078767A1 publication Critical patent/FR3078767A1/fr
Application granted granted Critical
Publication of FR3078767B1 publication Critical patent/FR3078767B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133603—Direct backlight with LEDs

Abstract

Un dispositif de rétro-éclairage pour dispositif d'affichage comprend une pluralité de sources de lumière (2) et un réseau de cellules (4) comprenant une pluralité de cellules (3) compartimentées au moyen de cloisons positionnées autour de chaque source de lumière (2) de sorte à générer des faisceaux lumineux associés respectivement à chaque cellule (3). Le dispositif comprend au moins une plaque diffusante (6) disposée de manière à recevoir sur une face d'entrée (61) au moins les faisceaux lumineux associés respectivement au réseau de cellules (4). Le réseau de cellules (4) et la plaque diffusante (6) sont séparés par un espacement (5) suffisant pour que les faisceaux lumineux associés à deux cellules (3) contigües se rejoignent au niveau de la face d'entrée (61). Un dispositif d'affichage associé est également décrit.
FR1852075A 2018-03-09 2018-03-09 Dispositif de retro-eclairage et dispositif d'affichage associe Active FR3078767B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1852075A FR3078767B1 (fr) 2018-03-09 2018-03-09 Dispositif de retro-eclairage et dispositif d'affichage associe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1852075A FR3078767B1 (fr) 2018-03-09 2018-03-09 Dispositif de retro-eclairage et dispositif d'affichage associe
FR1852075 2018-03-09

Publications (2)

Publication Number Publication Date
FR3078767A1 FR3078767A1 (fr) 2019-09-13
FR3078767B1 true FR3078767B1 (fr) 2020-09-25

Family

ID=62017556

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1852075A Active FR3078767B1 (fr) 2018-03-09 2018-03-09 Dispositif de retro-eclairage et dispositif d'affichage associe

Country Status (1)

Country Link
FR (1) FR3078767B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7152988B2 (en) * 2004-03-30 2006-12-26 Chi Mei Optoelectronics Corp. Direct point-light type backlight module and liquid crystal display using the same
FR2884026B1 (fr) * 2005-04-05 2007-06-08 Oxo Sarl Dispositif de support d'ecran comportant des sources lumineuses pour illuminer l'ecran
KR20100005153A (ko) * 2007-06-05 2010-01-13 아사히 가세이 이-매터리얼즈 가부시키가이샤 반사 시트
WO2012029601A1 (fr) * 2010-08-31 2012-03-08 シャープ株式会社 Dispositif d'éclairage, dispositif d'affichage et dispositif récepteur de télévision

Also Published As

Publication number Publication date
FR3078767A1 (fr) 2019-09-13

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