Lyquid crystal display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorsChul Ju Jun, Min Hwa Kim, Rok Hee Lee, Myoung Hwa Lee
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Abstract
The method of driving a liquid crystal display device includes calculating a brightness average value of pixel data of at least one frame period supplied to a liquid crystal display panel, and storing the average to a memory unit; generating a brightness control signal having a duty ratio according to the brightness average value of the pixel data adjusted taking variation of transmissivity with an angle of view into account in a white or black driving mode of the liquid crystal display panel; and supplying the brightness control signal to a light source unit.
Claims13
A liquid crystal display device comprising:
- a liquid crystal display panel;
- a gate driving unit driving gate lines of the liquid crystal display panel;
- a data driving unit for driving data lines of the liquid crystal display panel;
- a timing controller for controlling the gate and data driving units and calculating an average brightness value of pixel data of at least one frame to be supplied to the liquid crystal display panel and storing the average brightness value to a memory unit;
- a light source unit including red, green, blue LEDs;
- and a light source driving unit including an LED brightness controlling unit for generating a brightness control signal having a duty ratio according to the average brightness value of the pixel data adjusted taking transmissivity at an angle of view in a white or black driving mode of the liquid crystal display panel, and driving the light source unit according to the brightness control signal.
A method for driving a liquid crystal display device comprising:
- calculating a brightness average value of pixel data of at least one frame period supplied to a liquid crystal display panel, and storing the average to a memory unit;
- generating a brightness control signal having a duty ratio according to the brightness average value of the pixel data adjusted taking variation of transmissivity with an angle of view into account in a white or black driving mode of the liquid crystal display panel;
- and
- supplying the brightness control signal to a light source unit.
Dependencies are inferred from the claim text.