Patent ID: 7742033
Filing Date: 2010-06-22
Classification: G02F,G09G

Abstract:
1. A backlight control system comprising: a liquid crystal panel comprising a top panel attached to a base panel; said top panel comprising a top panel first surface, an oppositely disposed top panel second surface and a liquid crystal display surface visible from said top panel first surface; said base panel comprising a base panel first surface and an oppositely disposed base panel second surface; wherein said top panel second surface is adjacent said base panel first surface; a light source having a light-emitting device for emitting light of multiple, different wavelengths that is controlled by a control device; a light guide adapted to receive light from the light source and supply backlight through the base panel second surface of the liquid crystal panel; a light sensor adapted to sense light emitted from said light source and feed signals to the control device; drive elements adapted to drive the liquid crystal panel; wherein, said light sensor and said drive elements are mounted on said base panel first surface sandwiching said top panel therebetween; and a light-blocking mask formed on the base surface of the glass substrate opposite the position where the light sensor is mounted and a window through which some of the backlight is capable of passing is formed on the interior side of the light-blocking mask.