Display device with a backlight

摘要

A display includes a backlight portion having at least one broad spectrum emitter (such as white) and at least one narrow spectrum emitter (such as red, green, and blue), a liquid crystal panel for displaying an image by spatial light modulation, and control electronics configured to receive input image data and output control signals to both the backlight portion and liquid crystal panel. The control electronics is configured to use color rendering capabilities of the liquid crystal panel under illumination from each of the emitter types individually to calculate a minimum power combination of emission from each emitter type required to display the input image data. The control electronics is further configured to modify the input image data according to the calculated minimum power combination of emitter powers so a resulting display of colors in the image data remains despite changing illumination conditions.

主权项

1. A display comprising:
a backlight portion comprising at least one broad spectrum emitter and at least one narrow spectrum emitter, wherein the broad spectrum emitter emits light of a broader spectrum that the narrow spectrum emitter; an image panel for displaying an image by spatial light modulation; and control electronics configured to receive input image data and output control signals to both the backlight portion and the image panel; wherein the control electronics is configured to use color rendering capabilities of the image panel under illumination from each of the emitter types individually to calculate a minimum power combination of emission from each emitter type required to display the input image data, and the control electronics is further configured to modify the input image data according to the calculated minimum power combination of emitter powers so a resulting display of colours in the image data remains despite changing illumination conditions.