公开(公告)号：US20230408854A1

公开(公告)日：2023-12-21

申请号：US18209494

申请日：2023-06-14

Applicant: CHAMP VISION DISPLAY INC.

Inventor： CHUNG-HAO WU ,  HSIN-HUNG LEE ,  CHIN-KU LIU ,  CHUN-CHIEN LIAO ,  WEI-JHE CHIEN

IPC: G02F1/13 ,  F21V8/00 ,  G02F1/13357

CPC classification number: G02F1/1313 ,  G02B6/0055 ,  G02B6/0023 ,  G02F1/133605 ,  G02F1/133603 ,  G02B6/0036

Abstract: An anti-peep display device includes a display module and an anti-peep module disposed on the display module. The anti-peep module includes the following features. The first light incident surface faces the display surface, the second and third light incident surfaces are located on opposite sides of the first light incident surface, the first condensing portion is disposed corresponding to the second light incident surface and the first light source, the second condensing portion is disposed corresponding to the third light incident surface and the second light source, the first and second condensing portions convert beams of the first and second light sources into anti-peep beams with a beam angle less than 10 degrees, and the optical microstructures reflect the anti-peep beams and exit the anti-peep beams from the light guide plate. The present invention also provides an anti-peep method applicable to the anti-peep display device.

公开(公告)号：US20200264347A1

公开(公告)日：2020-08-20

申请号：US16790748

申请日：2020-02-14

Applicant: CHAMP VISION DISPLAY INC.

Inventor： CHIN-KU LIU ,  CHUNG-HAO WU

IPC: G02B5/04

Abstract: A display apparatus with multi screens includes a plurality of display screens and a prism structure optical element disposed between two adjacent display screens. The prism structure optical element includes a base and a plurality of prism pillars arranged on the base in a predetermined direction and facing two adjacent display screens. The base includes adjacent a first region and a second region. Lengths of the first region and the second region along the predetermined direction are La and Lb, respectively, wherein La≥Lb. The prism pillars include a plurality of first prism pillars arranged in the first region and a plurality of second prism pillars arranged in the second region. Each of the first prism pillars and the second prism pillars respectively has a total reflecting surface and a refracting surface. The total reflecting surface is located between the refracting surface and an adjacent area.