Residual image improving system for a liquid crystal display (LCD)
AssigneeAu Optronics Corporation
InventorHsien-Ying Chou
Life of this patent
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Abstract
This invention relates to a residual image improving system for a LCD, thereby effectively improving the residual image effect. The improving system includes: a power supply for providing an operating power; a voltage detector for detecting the voltage level of an external power by comparison to a predetermined voltage level under the operating power and producing a control signal by comparing the result; and a video and timing control unit for outputting a predetermined pattern to the LCD according to the control signal so as to improve the residual image effect.
Claims15
A LCD power-off residual image improving system, comprising:
- a power supply for providing an operating power;
- a voltage detector for detecting the voltage level of an external power by comparison to a predetermined voltage level under the operating power and producing a control signal by comparing the result;
- and
- a video and timing control unit for outputting a predetermined pattern to the LCD according to the control signal so as to improve the residual image effect.
A LCD power-off residual image improving system, comprising:
- a power supply for providing an operating power;
- a voltage detector for detecting the voltage level of an external power by comparison to a predetermined voltage level under the operating power and producing a control signal by comparing the result;
- a video and timing control unit for outputting a predetermined pattern to the LCD according to the control signal so as to improve the residual image effect;
- and
- a display matrix circuit for receiving the predetermined pattern to update the LCD frame and improve the residual image effect on the display.
A LCD power-off residual image improving method, comprising the steps:
- setting a predetermined voltage value according to an operating voltage;
- detecting an external power level according to the predetermined voltage value to output a control signal to a video and timing control unit;
- outputting a predetermined pattern from the video and timing control unit according to the control signal;
- and
- displaying the predetermined pattern on a LCD.
Dependencies are inferred from the claim text.