Display device and pixel circuit and display driving method thereof

The invention provides a display device and a pixel circuit and a display driving method thereof. According to the display device and the pixel circuit thereof, threshold voltage information of a driver transistor and a light-emitting element is extracted from a threshold extraction frame in a curre...

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Bibliographic Details
Main Authors WANG CUICUI, ZHANG SHENGDONG, LENG CHUANLI
Format Patent
LanguageEnglish
Published 15.07.2015
Subjects
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
BASIC ELECTRIC ELEMENTS
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
PHYSICS
SEALS
SEMICONDUCTOR DEVICES
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Summary:The invention provides a display device and a pixel circuit and a display driving method thereof. According to the display device and the pixel circuit thereof, threshold voltage information of a driver transistor and a light-emitting element is extracted from a threshold extraction frame in a current bias manner, and data voltage is written into a driving frame in a capacitive coupling manner, so that driving current passing through the light-emitting element is irrelevant to the threshold voltage information, threshold voltage drift of both transistors and the light-emitting element or nonuniformity of threshold voltage of all the transistors of a display panel is accurately compensated, and grey information (data voltage) is written in a voltage programming manner to realize quick data input. Besides, in the display driving method, one display driving period is divided into one threshold extraction frame and a plurality of driving frames, so that the ratio of the lighting time to the threshold extraction time of the light-emitting element is increased.
Bibliography:Application Number: CN2014118563