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1. WO2020112085 - DISPLAYS WITH DIMMING ZONES THAT CHANGE

Publication Number WO/2020/112085
Publication Date 04.06.2020
International Application No. PCT/US2018/062508
International Filing Date 27.11.2018
IPC
G09G 3/36 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34by control of light from an independent source
36using liquid crystals
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
CPC
G09G 2300/023
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2300Aspects of the constitution of display devices
02Composition of display devices
023Display panel composed of stacked panels
G09G 2310/024
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
02Addressing, scanning or driving the display screen or processing steps related thereto
024Scrolling of light from the illumination source over the display in combination with the scanning of the display screen
G09G 2320/0626
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
06Adjustment of display parameters
0626for control of overall brightness
G09G 2320/0686
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2320Control of display operating conditions
06Adjustment of display parameters
0686with two or more screen areas displaying information with different brightness or colours
G09G 2360/145
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2360Aspects of the architecture of display systems
14Detecting light within display terminals, e.g. using a single or a plurality of photosensors
145the light originating from the display screen
G09G 3/3426
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
3406Control of illumination source
342using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
3426the different display panel areas being distributed in two dimensions, e.g. matrix
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • HSIEH, Hsing-Hung
  • WU, Kuan-Ting
  • LIAO, Super
Agents
  • REA, Diana J.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DISPLAYS WITH DIMMING ZONES THAT CHANGE
(FR) DISPOSITIFS D'AFFICHAGE AYANT DES ZONES DE GRADATION QUI CHANGENT
Abstract
(EN)
In example implementations, a display is provided. The display includes a plurality of light emitting diodes (LEDs), a thin film transistor (TFT) substrate, a liquid crystal layer, a color filter (CF) substrate, and a controller. The TFT substrate is formed over the LEDs to control emission of light from the plurality of LEDs. The liquid crystal layer is formed over the TFT substrate. The CF substrate is formed over the liquid crystal layer to control a color of the light emitted from the plurality of LEDs. The controller is communicatively coupled to the plurality of LEDs to group subsets of LEDs of the plurality of LEDs into a plurality of local dimming zones, wherein the subsets of LEDs in each one of the plurality of local dimming zones changes over time.
(FR)
L'invention porte, selon des modes de réalisation donnés à titre d'exemple, sur un dispositif d'affichage. Le dispositif d'affichage comprend une pluralité de diodes électroluminescentes (DEL), un substrat de transistor à couches minces (TFT), une couche de cristaux liquides, un substrat de filtre coloré (CF) et un dispositif de commande. Le substrat de transistor TFT est formé sur les DEL pour commander une émission de lumière provenant de la pluralité de DEL. La couche de cristaux liquides est formée sur le substrat de transistor TFT. Le substrat de filtre CF est formé sur la couche de cristaux liquides pour commander une couleur de la lumière émise depuis la pluralité de DEL. Le dispositif de commande est couplé en communication à la pluralité de DEL pour regrouper des sous-ensembles de DEL de la pluralité de DEL dans une pluralité de zones de gradation locale, les sous-ensembles de DEL dans chaque zone de gradation locale de la pluralité de zones de gradation locale changeant au fil du temps.
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