Display with red, green, and blue light sources

摘要

A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. The screen is illuminated with light from a light source comprising an array of controllable light-emitters. The controllable-emitters and elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.

主权项

1. A display comprising:
a light emitter comprising red, green and blue solid-state light sources arranged to illuminate groups of pixels of a light modulator, the pixels of the light modulator comprising colored sub-pixels, the solid-state light sources configured to emit light in a plurality of patterns which overlap on the light modulator; a controller connected to control the brightness of each of the solid-state light sources and to control the sub-pixels of the light modulator according to image data wherein the control of the sub-pixels of the light modulator is performed based at least in part on both the image data and the controlled brightnesses of the solid-state light sources; an optical path carrying light from the light emitter to the light modulator, the optical path arranged such that each of the plurality of patterns has a light intensity that has a maximum in a different corresponding area of the light modulator and generally decreases with distance from the corresponding area and the resulting illumination of the light modulator by light from the solid-state light sources is spatially non-uniform and changes smoothly with position on the light modulator.