US 12,332,471 B2
Curved backlight module and display device
Hui-Hua Hung, Kaohsiung (TW); Ying-Ting Chen, Kaohsiung (TW); Sung-Fu Wu, Kaohsiung (TW); and Yi-Jen Chiu, Kaohsiung (TW)
Assigned to Radiant Opto-Electronics Corporation, Kaohsiung (TW)
Filed by Radiant Opto-Electronics Corporation, Kaohsiung (TW)
Filed on Apr. 29, 2023, as Appl. No. 18/309,791.
Application 18/309,791 is a continuation of application No. PCT/CN2022/094252, filed on May 20, 2022.
Prior Publication US 2023/0375771 A1, Nov. 23, 2023
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0051 (2013.01) [G02B 6/0036 (2013.01); G02B 6/0088 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A curved backlight module, comprising:
a frame unit, including a back frame, a curvature fixing member combined with the back frame, and at least one first positioning structure, the at least one first positioning structure is arranged on the back frame or the curvature fixing member;
a light source, carried on the back frame; and
a diffuser plate, carried on the back frame and located on the light emitting side of the light source, and the curvature fixing member presses the diffuser plate so that at least a portion of the diffuser plate forms the same curvature as the curvature fixing member,
wherein the diffuser plate has at least one second positioning structure, and the at least one first positioning structure of the frame unit is combined with the at least one second positioning structure of the diffuser plate to limit the diffuser plate;
wherein the back frame has a plate body portion carrying the light source, and a side wall portion arranged on a periphery of the plate body portion for carrying the diffuser plate, the curvature fixing member has an upper frame segment corresponding to a top edge of the side wall portion, the upper frame segment of the curvature fixing member press the diffuser plate against the top edge of the side wall portion, the at least one first positioning structure is connected to the upper frame segment, the at least one second positioning structure of the diffuser plate is in the shape of a groove recessed from the edge of the diffuser plate inwardly, and the at least one first positioning structure is assembled in the at least one second positioning structure.