Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020221448 - BACKLIGHTING DEVICE FOR THE DISPLAY SCREEN OF A TELEVISION OR MOBILE PHONE

Publication Number WO/2020/221448
Publication Date 05.11.2020
International Application No. PCT/EP2019/061120
International Filing Date 30.04.2019
IPC
G02F 1/13357 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
13357Illuminating devices
G02F 1/1335 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
F21S 2/00 2016.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
2Systems of lighting devices, not provided for in main groups F21S4/-F21S10/113
CPC
G02F 1/133514
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
133509Filters, e.g. light shielding masks
133514Colour filters
G02F 1/133603
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133602Direct backlight
133603with LEDs
G02F 2001/133624
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133624having a particular spectral emission
Applicants
  • GEMEX CONSULTANCY B.V. [NL]/[NL]
Inventors
  • ROOIJMANS, Johannes Otto
Agents
  • NEDERLANDSCH OCTROOIBUREAU
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BACKLIGHTING DEVICE FOR THE DISPLAY SCREEN OF A TELEVISION OR MOBILE PHONE
(FR) DISPOSITIF DE RÉTROÉCLAIRAGE POUR L'ÉCRAN D'AFFICHAGE D'UN TÉLÉVISEUR OU D'UN TÉLÉPHONE MOBILE
Abstract
(EN)
A backlight device (10) for a display screen (1) comprises a first light source (12) adapted to emit light having a peak wavelength between 600 and 630 nm; a second light source (14) adapted to emit light having a peak wavelength between 510 and 530 nm and a third light source (16) adapted to emit light having a peak wavelength between 440 and 460 nm. The spectral power distribution of the backlight results in an enhanced visual acuity and colour perception by better segregating the emission peaks (113, 115, 117) of the light sources and arranging their peak wavelengths at values which particularly suit the spectral sensitivity of the eye. Not only is the perceived resolution of the display screen increased but also the perceived brightness is improved allowing energy savings to be made.
(FR)
Dispositif de rétroéclairage (10) pour un écran d'affichage (1) comprenant une première source de lumière (12) conçue pour émettre de la lumière ayant un pic de longueur d'onde compris entre 600 et 630 nm; une seconde source de lumière (14) conçue pour émettre de la lumière ayant un pic de longueur d'onde compris entre 510 et 530 nm et une troisième source de lumière (16) conçue pour émettre de la lumière ayant un pic de longueur d'onde compris entre 440 et 460 nm. La distribution de puissance spectrale du rétroéclairage permet d'obtenir une acuité visuelle et une perception de couleur améliorées par une meilleure ségrégation des pics d'émission (113, 115, 117) des sources de lumière et l'agencement de leurs pics de longueurs d'onde à des valeurs qui s'adaptent particulièrement à la sensibilité spectrale de l'œil. Non seulement la résolution perçue de l'écran d'affichage augmente mais la luminosité perçue est également améliorée, ce qui permet de réaliser des économies d'énergie.
Latest bibliographic data on file with the International Bureau