US 12,345,910 B2
Light guide plate and backlight module
Yu-Huan Chiu, Hsinchu County (TW); Chien-Wei Liao, Hsinchu County (TW); and Yen-Lung Chen, Hsinchu County (TW)
Assigned to DARWIN PRECISIONS CORPORATION, Hsinchu County (TW)
Filed by Darwin Precisions Corporation, Hsinchu County (TW)
Filed on May 11, 2023, as Appl. No. 18/196,167.
Claims priority of application No. 111120107 (TW), filed on May 30, 2022.
Prior Publication US 2023/0384504 A1, Nov. 30, 2023
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0036 (2013.01) [G02B 6/0058 (2013.01); G02B 6/0038 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A light guide plate, comprising:
a light receiving surface;
a light exit surface connected to a first end of the light receiving surface; and
a bottom surface connected to a second end of the light receiving surface opposite to the first end and located opposite to the light exit surface; and a first side surface located between the light exit surface and the bottom surface and connected to the light receiving surface, the light exit surface and the bottom surface, wherein the bottom surface has a central region, a first side edge and a peripheral girdle region, the central region is located at a center of the bottom surface, the first side edge is located at a location where the bottom surface and the first side surface are connected, the peripheral girdle region is located between the first side edge and the central region and surrounds the central region, the peripheral girdle region has a first peripheral substructure, the central region has a plurality of first reflecting structures, and the first peripheral substructure has a plurality of second reflecting structures different from the first reflecting structures.