US 12,078,836 B2
Light guide plate assembly, backlight module and display device
Zhanxiang Guo, Shanghai (CN); Yumin Xu, Shanghai (CN); Binbin Chang, Shanghai (CN); Zhaoxing Gao, Shanghai (CN); Wanzhen Wang, Shanghai (CN); Weiyang Sun, Shanghai (CN); and Jianguo Bian, Shanghai (CN)
Assigned to Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed by Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed on Dec. 6, 2023, as Appl. No. 18/530,456.
Application 18/530,456 is a continuation of application No. 18/297,318, filed on Apr. 7, 2023, granted, now 11,874,487.
Claims priority of application No. 202211399410.9 (CN), filed on Nov. 9, 2022.
Prior Publication US 2024/0134105 A1, Apr. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0018 (2013.01) [G02B 6/0021 (2013.01); G02B 6/0031 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light guide plate assembly, comprising:
a reflection portion having an aperture; and
a transmission portion,
wherein at least part of the transmission portion is located in the aperture; the transmission portion comprises a converging portion and a diverging portion; a curvature of a surface of the converging portion adjacent to a light-incoming side of the light guide plate assembly is greater than or equal to 0, and a curvature of a surface of the diverging portion adjacent to the light-incoming side of the light guide plate assembly is smaller than or equal to 0.