公开(公告)号：US20180188603A1

公开(公告)日：2018-07-05

申请号：US15850963

申请日：2017-12-21

Applicant: Young Lighting Technology Inc.

Inventor： CHONG-YANG FANG ,  WEN-CHUN WANG ,  HSIUNG-CHUN HSU

IPC: G02F1/1335

CPC classification number: G02F1/133602 ,  G02F1/1323 ,  G02F1/1334 ,  G02F1/133504 ,  G02F1/133509 ,  G02F1/133528 ,  G02F2001/133626

Abstract: A display device includes a backlight module generating an emitting light having a first light distribution pattern, a switchable single-axis diffuser and a display panel. The first light distribution pattern has a light intensity exceeding a predetermined value within a first view angle range in a first direction. When the switchable single-axis diffuser is switched to a transparent mode, the emitting light passes through the switchable single-axis diffuser and maintains the first light distribution pattern. When the switchable single-axis diffuser is switched to a diffusion mode, the emitting light passes through the switchable single-axis diffuser and converts to a second light distribution pattern having the luminous intensity exceeding the predetermined value within a range of a second view angle in a first direction. The second view angle range is larger than the first view angle range.