US 11,892,672 B2
Display device with light guide plate having angled eccentric microstructures
Ming-Chuan Lin, Taichung (TW); Sheh-Jung Lai, Taichung (TW); Kuo-Hsin Wang, Nantou County (TW); and Yu-Ling Chen, Taichung (TW)
Assigned to TPK TOUCH SOLUTIONS (XIAMEN) INC., Xiamen (CN)
Filed by TPK TOUCH SOLUTIONS (XIAMEN) INC., Xiamen (CN)
Filed on May 20, 2022, as Appl. No. 17/749,161.
Prior Publication US 2023/0375768 A1, Nov. 23, 2023
Int. Cl. G02B 6/00 (2006.01); F21V 8/00 (2006.01)
CPC G02B 6/0036 (2013.01) [G02B 6/0068 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A light guide plate, comprising:
a first area;
a second area, located on at least one side of the first area;
a substrate;
a plurality of first eccentric microstructures, disposed in the substrate, and located at the first area, wherein each of the first eccentric microstructures comprises a first eccentric orientation; and
a plurality of second eccentric microstructures, disposed in the substrate, and located at the second area, wherein each of the second eccentric microstructures comprises a second eccentric orientation, and wherein an angle between the first eccentric orientation and the second eccentric orientation is less than 90 degrees, wherein each of the first eccentric microstructures comprises:
a curved surface, with a conical point and a cutting edge positioned at a surface of the substrate, wherein the first eccentric orientation is a direction from a central point of the cutting edge to a projection of the conical point to the surface; and
at least one vertical cutting surface, wherein the at least one vertical cutting surface is parallel to the first eccentric orientation.