Patent ID: 8013949
Filing Date: 2011-09-06
Classification: G02F,G09G

Abstract:
1. A liquid crystal display comprising: front and back glass substrates having a liquid crystal layer sealed therebetween, a light guide positioned behind the back glass substrate and running substantially the entire length of said substrate, a reflector positioned behind the light guide and running the entire length of the light guide, said reflector reflecting light through said liquid crystal layer in a first direction; a light source located adjacent to a first side of the light guide not underneath the back substrate, said light source emitting light in a second direction perpendicular to said first direction, and an optoelectric component located adjacent to a second side of the light guide, said component located directly underneath the back glass substrate and not in contact with the back substrate, said optoelectric component detecting light emitted in a direction perpendicular to said first direction, wherein the light source emits only part of the spectrum, and the optoelectronic component is aligned to that spectrum that is not emitted by the light source.