Display driving device
AssigneeMagnaChip Semiconductor, Ltd.
InventorsHongju KIM, Youngshin KIM, Jaewon KIM, Hyein KIM, Seungjo SHIN
Life of this patent
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Abstract
A display drive device configured to drive a display panel includes a timing controller configured to compare current data to previous data based on a channel unit in horizontal time, calculate data difference values, and output a bias control signal determined based on a maximum value among the calculated data difference values; and a source driver configured to generate a bias current based on the bias control signal and based on the channel unit. The source driver includes an output circuit configured to output a data signal to a plurality of channels based on the bias current generated based on the channel unit.
Claims20
A display drive device configured to drive a display panel, comprising:
- a timing controller configured to:
- compare current data to previous data based on a channel unit in horizontal time,
- calculate data difference values, and
- output a bias control signal determined based on a maximum value among the calculated data difference values;
- and
- a source driver configured to generate a bias current based on the bias control signal and based on the channel unit,
- wherein the source driver comprises an output circuit configured to output a data signal to a plurality of channels based on the bias current generated based on the channel unit.
A method for operating a display drive device configured to drive a display panel, the method comprising:
- generating image data to be displayed on the display panel;
- allowing a timing controller to compare current data to previous data based on a channel unit of a source driver in horizontal time and calculate data difference values;
- obtaining a maximum value among the calculated data difference values;
- outputting a bias control signal based on the maximum value;
- and
- outputting a bias current to be provided to an output circuit of the source driver according to the bias control signal.
A display drive device configured to drive a display panel, comprising:
- a timing controller configured to:
- compare current data to previous data based on a normal bias control signal or based on a channel unit,
- calculate data difference values, and
- output an active bias control signal determined based on a maximum value among the calculated data difference values;
- and
- a slew rate control circuit configured to receive the normal bias control signal or the active bias control signal and control an output circuit of a source driver.
Dependencies are inferred from the claim text.