Display controller and method for driving liquid crystal display panel
AssigneeHannstar Display Corp.
InventorsSyang-yun Tzeng, Wen-chi Lin
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Abstract
A display controller and a method for driving a liquid crystal display (LCD) panel are disclosed. The display controller is electrically connected to the LCD panel and comprises a data processor and a control signal generator. The method comprises the following steps: determining whether an image data signal is a first image data signal or a second image data signal; providing a first polarity signal to the panel when the image data signal is the first image data signal; and providing a second polarity signal to the panel when the image data signal is the second image data signal.
Claims20
A display controller, electrically connected to a liquid crystal display panel, wherein the display controller comprises:
- a data processor configured to process an image data signal;
- and
- a control signal generator electrically connected to the data processor, wherein the control signal generator provides a first polarity signal to the liquid crystal display panel when the image data signal is a first image data signal, and the control signal generator provides a second polarity signal to the liquid crystal display panel when the image data signal is a second image data signal;
- wherein a frequency of the first polarity signal is larger than a frequency of the second polarity signal.
A method for driving a liquid crystal display panel comprising the following steps:
- determining whether an image data signal is the first image data signal or a second image data signal;
- providing a first polarity signal when the image data signal is determined as the first image data signal;
- and
- providing a second polarity signal when the image data signal is determined as the second image data signal;
- wherein the frequency of the first polarity signal is larger than the frequency of the second polarity signal.
Dependencies are inferred from the claim text.