公开(公告)号：US20240134105A1

公开(公告)日：2024-04-25

申请号：US18530456

申请日：2023-12-06

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Zhanxiang GUO ,  Yumin XU ,  Binbin CHANG ,  Zhaoxing GAO ,  Wanzhen WANG ,  Weiyang SUN ,  Jianguo BIAN

IPC: F21V8/00

CPC classification number: G02B6/0018 ,  G02B6/0021 ,  G02B6/0031

Abstract: Provided are a light guide plate assembly, a backlight module, and a display device, which relate to the field of display technologies, and improve uniformity of the light intensity of light emitted from different areas in the light guide plate assembly. The light guide plate assembly includes a reflection portion having an aperture; and a transmission portion. At least part of the transmission portion is located in the aperture. The transmission portion includes 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.

公开(公告)号：US20230244022A1

公开(公告)日：2023-08-03

申请号：US18297318

申请日：2023-04-07

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Zhanxiang GUO ,  Yumin XU ,  Binbin CHANG ,  Zhaoxing GAO ,  Wanzhen WANG ,  Weiyang SUN ,  Jianguo BIAN

IPC: F21V8/00

CPC classification number: G02B6/0018 ,  G02B6/0031 ,  G02B6/0021

Abstract: Provided are a light guide plate assembly, a backlight module, and a display device, which relate to the field of display technologies, and improve uniformity of the light intensity of light emitted from different areas in the light guide plate assembly. The light guide plate assembly includes a reflection portion having an aperture; and a transmission portion. At least part of the transmission portion is located in the aperture. The transmission portion includes a converging portion and a diverging portion. The converging portion is configured to make light that enters the converging portion be converged towards a direction away from a center of the aperture. The diverging portion is configured to make light that enters the diverging portion be diverged towards a direction away from the center of the aperture. The converging portion is located at a side of the transmission portion away from the center of the aperture.