Invention Grant
- Patent Title: Light directing sheet, backlight module, and display device
-
Application No.: US17336837Application Date: 2021-06-02
-
Publication No.: US11320580B2Publication Date: 2022-05-03
- Inventor: Wei-Hsuan Chen , Yung-Hui Tai
- Applicant: Radiant(Guangzhou) Opto Electronics Co., Ltd , Radiant Opto Electronics Corporation
- Applicant Address: CN Guangdong; TW Kaohsiung
- Assignee: Radiant(Guangzhou) Opto Electronics Co., Ltd,Radiant Opto Electronics Corporation
- Current Assignee: Radiant(Guangzhou) Opto Electronics Co., Ltd,Radiant Opto Electronics Corporation
- Current Assignee Address: CN Guangdong; TW Kaohsiung
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Main IPC: F21V8/00
- IPC: F21V8/00

Abstract:
A light directing sheet includes a light-incident side and a light-exit side opposite to the light-incident side. The light-exit side can be divided into a middle area and two side areas along an X-axis direction. The side areas are located on both sides of the middle area. A plurality of strip structures are protruded and arranged on each of the side areas, and the strip structures are arranged along the direction of the X axis and elongated along the direction of a Y axis perpendicular to the X axis. The strip structures are in a staggered arrangement of high microstructures and low microstructures with a height lower than the high microstructures. Through the type and arrangement of the strip structures on the light directing sheet, the light with an excessively large angle can be refracted again. A backlight module and a display device include the light directing sheet.
Public/Granted literature
- US20210333465A1 OPTICAL FILM, BACKLIGHT MODULE, AND DISPLAY DEVICE Public/Granted day:2021-10-28
Information query