公开(公告)号：US20200301061A1

公开(公告)日：2020-09-24

申请号：US16088172

申请日：2017-03-28

Applicant: CORNING INCORPORATED

Inventor： Jacques GOLLIER ,  Steven S ROSENBLUM ,  Kristopher Allen WIELAND ,  Ying ZHANG

IPC: F21V8/00 ,  G02B26/00

Abstract: Disclosed herein are backlight units comprising a light guide assembly including (110) a light guide plate (105) and least one light valve layer (115), and at least one light source (125) optically coupled to the light guide plate (105), wherein regions of the light guide assembly (110) are configured to switch between active and inactive states, wherein an active region transmits at least about 90% of incident light and an inactive region transmits less than about 10% of incident light. Display devices comprising such backlight units are further disclosed as well as methods for displaying an image.