Patent ID: 8179362
Filing Date: 2012-05-15
Classification: G02B,H04N,Y10S

Abstract:
1. A scanning backlight for a stereoscopic 3D liquid crystal display apparatus, comprising: a light guide having a first side and a second side opposite the first side, and having a first substantially planar surface extending between the first and second sides and a second substantially planar surface opposite the first surface, wherein the first surface substantially re-directs light and the second surface substantially transmits light; a plurality of first light sources arranged along the first side of the light guide for transmitting light into the light guide from the first side; and a plurality of second light sources arranged along the second side of the light guide for transmitting light into the light guide from the second side, wherein, the first light sources are divided into a plurality of first groups where each of the first groups are linearly and sequentially disposed along a length of the first side and the second light sources are divided into a plurality of second groups where each of the second groups are linearly and sequentially disposed along a length of the second side, each first group having a corresponding and opposing second group, and each of the first groups are sequentially and selectively turned on and off linearly and sequentially along the length of the first side and each of the second groups are sequentially and selectively turned on and off linearly and sequentially along the length of the second side where only the first group or corresponding and opposing second group selectively transmits light into light guide at one time.