US 12,271,020 B2
Display device
Wenbin Wang, Shenzhen (CN); Lijian Xiao, Shenzhen (CN); Zhonghong Guan, Shenzhen (CN); Guanqiao Zhao, Shenzhen (CN); He Peng, Shenzhen (CN); and Wenbin Lu, Shenzhen (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
Appl. No. 17/767,955
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
PCT Filed Mar. 31, 2022, PCT No. PCT/CN2022/084272
§ 371(c)(1), (2) Date Apr. 11, 2022,
PCT Pub. No. WO2023/173498, PCT Pub. Date Sep. 21, 2023.
Claims priority of application No. 202210255421.3 (CN), filed on Mar. 15, 2022.
Prior Publication US 2024/0094458 A1, Mar. 21, 2024
Int. Cl. F21V 17/00 (2006.01); F21V 8/00 (2006.01)
CPC G02B 6/0055 (2013.01) [G02B 6/0088 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display device, wherein the display device comprises a display area and a frame area arranged around the display area, comprising:
a backplate, the backplate defined with a receiving cavity;
a reflector, the reflector arranged in the receiving cavity;
a light guide plate, the light guide plate located in the receiving cavity, and the light guide plate is arranged on the reflector, the light guide plate comprises a light guide plate body part and at least one light guide plate extension part connected with the light guide plate body part, the light guide plate body part is located in the display area, the light guide plate extension part is located in the frame area;
a light source, the light source located in the receiving cavity, the light source is located between the light guide plate and the backplate, and the light source is located on the reflector, the light source is located in the frame area;
an optical diaphragm, the optical diaphragm located in the receiving cavity, the optical diaphragm is arranged on a side of the light guide plate away from the reflector, the optical diaphragm comprises a diaphragm body part and at least one diaphragm extension part connected with the diaphragm body part, the diaphragm body part is located in the display area, the diaphragm extension part is located in the frame area, the diaphragm extension part is engaged with and connected with the light guide plate extension part; and
a display panel, the display panel arranged on a side of the backplate away from the optical diaphragm;
wherein the backplate comprises a bottom plate and a plurality of side walls arranged on the bottom plate, the bottom plate and the plurality of side walls are enclosed to form the receiving cavity, at least one limiting groove with an opening facing the receiving cavity is defined by at least one of the plurality of side walls, the at least one limiting groove comprises a first wall parallel to the bottom plate, the light guide plate extension part extends into the at least one limiting groove, and a surface of the light guide plate extension part close to the bottom plate is in contact with the first wall; and
the light guide plate extension part is provided with a clamping groove located in one of the at least one limiting groove, an opening of the clamping groove faces the diaphragm extension part, the clamping groove passes through at least a part of the light guide plate extension part along a thickness direction of the light guide plate, the diaphragm extension part comprises a buckle, the buckle protrudes from a surface of the diaphragm extension part facing the light guide plate, and the buckle is engaged with the clamping groove along the thickness direction of the light guide plate.