APPARATUS OF GENERATING GRAY SCALE VOLTAGE FOR ORGANIC LIGHT EMITTING DISPLAY DEVICE AND GENERATING METHOD THEREOF

PURPOSE: A grayscale voltage generating device of an organic electroluminescent display device and a grayscale voltage generating method naturally form a continuous diming mode by generating an optimal grayscale voltage for any selected brightness. CONSTITUTION: A brightness/color coordinate correct...

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Bibliographic Details
Main Authors KIM, MIN WEUN, YOO, JEONG GEUN, KIM, SANG RAK
Format Patent
LanguageEnglish
Korean
Published 07.10.2013
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CRYPTOGRAPHY
DISPLAY
EDUCATION
PHYSICS
SEALS
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Summary:PURPOSE: A grayscale voltage generating device of an organic electroluminescent display device and a grayscale voltage generating method naturally form a continuous diming mode by generating an optimal grayscale voltage for any selected brightness. CONSTITUTION: A brightness/color coordinate correction unit (152) includes a gamma table (152a) and a gamma reference voltage look-up table (152b). A gamma control signal output unit (154) outputs a gamma reference voltage control signal corresponding to a second brightness level by referring to the gamma table and the gamma reference voltage look-up table. A gamma correction circuit (400) receives the gamma reference voltage control signal, generates grayscale voltages corresponding to the second brightness level, and outputs the grayscale voltages to a data driver. [Reference numerals] (152) Brightness/color coordinate correction unit; (152a) Gamma table; (152b) Gamma reference voltage LUT; (154) Gamma control signal output unit; (400) Gamma correction circuit
Bibliography:Application Number: KR20120030586