Organic light emitting diode display and method of driving the same
AssigneeSamsung Mobile Display Co., Ltd.
InventorsKwang-Suk Shin, Won-Jun Choe
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Abstract
An organic light emitting diode display having improved display quality is disclosed. The organic light emitting diode display includes pixels positioned at intersections of scan lines and data lines, an emission control unit for controlling emission times of the pixels according to a second emission width signal indicating emission time information of the pixels, and an emission time controller for dividing the pixels into a plurality of blocks and for generating the second emission width signal according to a brightness history of the blocks.
Claims26
An organic light emitting diode (OLED) display, comprising:
- a plurality of pixels positioned at intersections of scan lines and data lines;
- an emission control unit configured to control emission times of the pixels to correspond to a second emission width signal;
- and
- an emission time controller configured to divide the pixels into a plurality of blocks and to generate the second emission width signal based on brightness history data of the blocks.
A method of driving an organic light emitting diode (OLED) display, comprising:
- accumulating brightness data for a plurality of blocks of pixels;
- generating level data indicating brightness levels based on the accumulated brightness data of the blocks;
- accumulating the level data for a plurality of frames to generate accumulated level data;
- comparing the accumulated level data with a threshold value to generate a first control signal if at least one of the accumulated level data is greater than the threshold value and to otherwise generate a second control signal;
- and
- incrementally reducing brightness of the pixels if the first control signal is generated.
Dependencies are inferred from the claim text.