US 12,019,329 B2
Backlight module and quantum dot display device
Xue Bai, Guangdong (CN); Song Lan, Guangdong (CN); Miao Zhou, Guangdong (CN); and Dongze Li, Guangdong (CN)
Assigned to SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/295,466
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong (CN)
PCT Filed Apr. 30, 2021, PCT No. PCT/CN2021/091484
§ 371(c)(1), (2) Date May 20, 2021,
PCT Pub. No. WO2022/222181, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 202110435280.9 (CN), filed on Apr. 22, 2021.
Prior Publication US 2022/0357618 A1, Nov. 10, 2022
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/133603 (2013.01) [G02F 1/133605 (2013.01); G02F 1/133606 (2013.01); G02F 1/133614 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a light-emitting element which emits blue light;
a color conversion layer comprising a phosphor, wherein the phosphor emits at least one of red light, green light, or yellow light under excitation of the blue light;
a diffuser plate located on a side of a light-exiting surface of the light-emitting element; and
a plurality of protrusions located on a side of the diffuser plate away from the light-emitting element:,
wherein the color conversion layer is formed on a surface of the diffuser plate and is located on a side of the diffuser plate away from the light-emitting element, and the plurality of protrusions are formed on a surface of the color conversion layer away from the diffuser plate.