Patent ID: 9070316
Filing Date: 2015-06-30
Classification: G02F,G09G

Abstract:
1. A display comprising: a spatial light modulator having a plurality of pixels and having an optical characteristic that is spatially non-uniform in a first range of spatial frequencies and in a second range of spatial frequencies that is higher than the first range of spatial frequencies; a backlight system having a light source and configured to produce, based on light produced by the light source, a light output that is spatially non-uniform in at least one among luminance and color, wherein said spatial non-uniformity of the light output is configured to partially compensate for the spatially non-uniform optical characteristic of the spatial light modulator; and an electronic signal processing element arranged to alter pixel values of an image signal to partially compensate for the spatially non-uniform optical characteristic of the spatial light modulator, wherein, for each of said plurality of pixels, said spatial light modulator is configured to addressably control a luminance of the pixel according to corresponding ones of said altered pixel values of the image signal, and wherein said spatial light modulator is arranged in an optical path of said light produced by the light source, and wherein said display includes an optical filter arranged in the optical path of said light produced by the light source and configured to alter at least one among luminance and color to partially compensate for the spatially non-uniform optical characteristic of the spatial light modulator.