Segmented directional backlight and related methods of backlight illumination

摘要

Backlit display systems, such as those employed with LED backlit displays, including those configured for autostereoscopic operation, may employ synchronization between the backlight and the presentation of sequential left and right eye images at a frame rate exceeding approximately 100 Hz. To successfully directionally illuminate isolated frames, the disclosed principles provide for segmenting the directional illumination and introducing a phase shifted, synchronized, pulsed drive scheme for the illumination segments. Accordingly, the principles disclosed herein are directed to segmented directional illumination systems and related techniques for segmented directional backlight illumination.

主权项

1. A segmented illumination system for use with an electronic stereoscopic display system having a sequentially scanning display, the segmented illumination system comprising:
a plurality of directional illumination segments corresponding to a plurality of display segments of the sequentially scanning display, the plurality of directional illumination segments arranged contiguously in a direction of the sequential scan; a plurality of illumination units corresponding to each of the plurality of directional illumination segments for providing illumination to said corresponding illumination segments, the plurality of illumination segments thereby directionally illuminating the corresponding plurality of display segments in a first or second direction, wherein the plurality of illumination segments are physically isolated from one another; wherein one or more first illumination units of each of said plurality of illumination units provide said illumination to corresponding one or more first directional illumination segments such that said corresponding one or more first directional illumination segments provide illumination in a first direction in synchronization with first-eye imagery provided by the corresponding plurality of display segments, and one or more second illumination units of each of the plurality of illumination units provide illumination to corresponding one or more second directional illumination segments such that said corresponding one or more second directional illumination segments provide illumination in a second direction in synchronization with second-eye imagery provided by the corresponding plurality of display segments.