US 12,253,693 B2
Display device
Song Fang, Guangdong (CN); Jing Zhang, Guangdong (CN); and Haibing Shao, Guangdong (CN)
Assigned to Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong (CN)
Filed on Mar. 28, 2023, as Appl. No. 18/191,194.
Claims priority of application No. 202310153506.5 (CN), filed on Feb. 9, 2023.
Prior Publication US 2024/0272452 A1, Aug. 15, 2024
Int. Cl. G02B 30/33 (2020.01); G02B 5/18 (2006.01); G02F 1/1335 (2006.01)
CPC G02B 30/33 (2020.01) [G02F 1/133607 (2021.01); G02B 2005/1804 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a light source comprising a light receiving member and a plurality of light emitting diodes, wherein the light receiving member is provided with a plurality of accommodating spaces, each of the plurality of light emitting diodes is disposed in one of the plurality of accommodating spaces, and the light receiving member is used for gathering light beams emitted by the plurality of light emitting diodes;
a light transmitting layer disposed on one side of the light source where the light source emits light and provided with a plurality of micro-lens structures for converting the light beams into parallel light; and
a light splitting layer disposed on one side of the light transmitting layer away from the light source, wherein the light splitting layer comprises at least one liquid crystal grating layer and a prism layer disposed on one side of the liquid crystal grating layer away from the light source;
wherein the prism layer comprises at least a first prism surface and a second prism surface disposed on one side of the first prism surface; wherein at a first period, light exiting from the first prism surface formed by transmitting a part of the parallel light through the liquid crystal grating layer has a first exit angle; and, at a second period, light exiting from the first prism surface formed by transmitting another part of the parallel light has a second exit angle.