Booting method and shutting down method for image display device
AssigneeHimax Display, Inc.
InventorsMao-Jung Chung, Yu-Shen Kung, Chin-Cheng Liu
Life of this patent
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Abstract
During booting of a display panel and a light source, low power supply for electronic circuits is provided to the display panel. Then, the display panel is set by R/W commands. Then, high power supply for liquid crystal transition is provided to the display panel. Then, the display panel is discharged for removing residual electronic charges. Then, the light source is turned on for emitting light to the display panel. On the contrary, during shut down, the light source is turned off and then the display panel is discharged. Then, application of high power supply is stopped. Then, the display panel is set by R/W commands. Then, application of low power supply is stopped.
Claims16
A booting method for a display panel and a light source, the method comprising:
- (a1) providing a first reference voltage to the display panel;
- (a2) performing a command for setting the display panel;
- (a3) providing a second reference voltage to the display panel;
- (a4) discharging the display panel;
- and
- (a5) turning on the light source for emitting light to the display panel.
A shutting down method for a display panel and a light source, the method comprising:
- (b1) turning off the light source;
- (b2) discharge the display panel;
- (b3) terminating provision of a first reference voltage to the display panel;
- (b4) performing a command for setting the display panel;
- and
- (b5) terminating provision of a second reference voltage to the display panel.
A method for improving performance of a display panel and a light source, the method comprising:
- (a) during booting of the display panel:
- (a1) providing a first reference voltage to the display panel;
- (a2) performing a first command for setting the display panel;
- (a3) providing a second reference voltage to the display panel;
- (a4) discharging the display panel;
- and
- (a5) turning on the light source for emitting light to the display panel;
- and
- (b) during shutting down of the display panel:
- (b1) turning off the light source;
- (b2) discharge the display panel;
- (b3) terminating provision of the second reference voltage to the display panel;
- (b4) performing a second command for setting the display panel;
- and
- (b5) terminating provision of the first reference voltage to the display panel.
Dependencies are inferred from the claim text.