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1. WO2020068067 - TEMPERATURE BASED OLED SUB-PIXEL LUMINOSITY CORRECTION

Publication Number WO/2020/068067
Publication Date 02.04.2020
International Application No. PCT/US2018/052919
International Filing Date 26.09.2018
IPC
G09G 3/30 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
22using controlled light sources
30using electroluminescent panels
G01K 11/16 2006.01
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based on physical or chemical changes not covered by group G01K3/, G01K5/, G01K7/, or G01K9/202
12using change of colour or translucency
16of organic materials
CPC
G01K 11/16
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
12using change of colour or translucency
16of organic materials
G09G 3/30
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
22using controlled light sources
30using electroluminescent panels
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • HSIEH, Hsing-Hung
  • YU, Cheng-Hua
  • VILLEGAS, Ann Alejandro
Agents
  • JENNEY, Michael
  • FOR ADDITIONAL NAMES, Please See attached General Power of Attorney
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TEMPERATURE BASED OLED SUB-PIXEL LUMINOSITY CORRECTION
(FR) CORRECTION DE LUMINOSITÉ DE SOUS-PIXEL DE DELO BASÉE SUR LA TEMPÉRATURE
Abstract
(EN)
In an example implementation according to aspects of the present disclosure, a system including a controller to receive a temperature value, from a temperature sensor corresponding to a sub-pixel in an organic light emitting display. The controller calculates a luminous value of the sub-pixel based on the temperature value and a function corresponding to a degradation of luminosity over time and temperature. The controller determines, based on the luminous value, a corrected luminous value corresponding to a target luminous value. The controller retrieves a voltage value from a second database, wherein the second database comprises a luminous-voltage relationship. The controller applies the voltage value to the sub-pixel.
(FR)
La présente invention concerne, selon un exemple de mise en œuvre selon des aspects de l'invention, un système comportant un dispositif de commande permettant de recevoir une valeur de température, à partir d'un capteur de température correspondant à un sous-pixel dans un dispositif d'affichage électroluminescent organique. Le dispositif de commande calcule une valeur lumineuse du sous-pixel sur la base de la valeur de température et d'une fonction correspondant à une dégradation de la luminosité dans le temps et de la température. Le dispositif de commande détermine, sur la base de la valeur lumineuse, une valeur lumineuse corrigée correspondant à une valeur lumineuse cible. Le dispositif de commande récupère une valeur de tension à partir d'une seconde base de données, la seconde base de données comprenant une relation entre luminosité et tension. Le dispositif de commande applique la valeur de tension au sous-pixel.
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