Liquid crystal display with a fast warm up
First Claim
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1. A display having an internal operating temperature, comprsiing:
- a plurality of liquid crystal display elements;
a backlight having variable brightness and positioned for illuminating said plurality of liquid crystal display elements; and
control means connected to said backlight for increasing said brightness of said backlight and darkening said plurality of liquid crystal display elements during an initial warm-up period when the internal operating temperature is below a predetermined threshold.
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Abstract
Display apparatus and method having window shade heating. The display has an active matrix LCD with a plurality of elements and a backlight having a variable brightness. During warm-up of the display, the operating temperature will be below the normal operating temperature. To decrease warm-up time, the LCD elements are darkened and the brightness of the backlight is increased.
36 Citations
9 Claims
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1. A display having an internal operating temperature, comprsiing:
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a plurality of liquid crystal display elements; a backlight having variable brightness and positioned for illuminating said plurality of liquid crystal display elements; and control means connected to said backlight for increasing said brightness of said backlight and darkening said plurality of liquid crystal display elements during an initial warm-up period when the internal operating temperature is below a predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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- 7. A method of controlling a display having liquid crystal display elements and a backlight for illuminating the elements, the display having an internal operating temperature, comprising the step of increasing the brightness of the backlight and darkening the elements during an initial warm-up period when the internal operating temperature is below a predetermined threshold.
Specification