Liquid crystal display
AssigneeLG Display Co., Ltd.
InventorJiyoung AHN
Life of this patent
Estimating the term…
Abstract
There is provided a liquid crystal display. A liquid crystal display panel displays an image. An external light sensor senses a color temperature of external light around the liquid crystal display panel. The output luminance of a backlight is controlled in response to an adjustment dimming signal which is varied according to an input image. A gamma curve adjustment circuit restores an original color of the display image irrespective of a change in the viewing environments by modulating input digital video data based on the color temperature of the external light or a relative maximum white luminance for the adjustment dimming signal.
Claims14
A liquid crystal display, comprising:
- a liquid crystal display panel displaying an image;
- an external light sensor sensing a color temperature of external light around the liquid crystal display panel;
- a backlight having an output luminance controlled in response to an adjustment dimming signal which is varied according to an input image;
- and
- a gamma curve adjustment circuit restoring an original color of the display image irrespective of a change in viewing environments by modulating input digital video data based on the color temperature of the external light or a relative maximum white luminance for the adjustment dimming signal.
A liquid crystal display, comprising:
- a liquid crystal display panel displaying an image;
- an external light sensor sensing a color temperature of external light around the liquid crystal display panel;
- a backlight having an output luminance controlled in response to an adjustment dimming signal which is varied according to an input image;
- and
- a gamma curve adjustment circuit restoring an original color of the display image irrespective of a change in viewing environments by varying resistance values of variable resistors constituting a gamma resistance string based on the luminous intensity of the external light or a relative maximum white luminance for the adjustment dimming signal.
Dependencies are inferred from the claim text.