公开(公告)号：US20180239076A1

公开(公告)日：2018-08-23

申请号：US15881462

申请日：2018-01-26

Applicant: Young Lighting Technology Inc.

Inventor： Hua Chen ,  Chun-Hsiang Hsu ,  Wei-Ching Wu ,  Fan-Chun Lin ,  Chung-Hung Fang

IPC: F21V8/00

CPC classification number: G02B6/0038 ,  G02B6/0021 ,  G02B6/0043 ,  G02B6/0068 ,  G02B6/009

Abstract: A surface light source assembly includes a light source and a light guide plate. The light source has a plurality of light emitting surfaces. Each of the light emitting surfaces has a light emission angle range. The light guide plate has a bottom surface, a light exit surface opposite to the bottom surface, and at least one side surface connected between the bottom surface and the light exit surface. The bottom surface has an accommodation groove for accommodating the light source. The light emitting surfaces face the at least one side surface. The light guide plate further has a plurality of groove structures located within the light emission angle range of the light emitting surfaces to reflect a portion of a light emitted from the light emitting surfaces to outside the light emission angle range. A backlight module including a plurality of aforementioned surface light source assemblies is also provided.