US 11,947,217 B2
Backlight module and display apparatus
Tzeng-Ke Shiau, Hsin-Chu (TW); Yi-Cheng Lin, Hsin-Chu (TW); and Chia-Liang Kang, Hsin-Chu (TW)
Assigned to Coretronic Corporation, Hsin-Chu (TW)
Filed by Coretronic Corporation, Hsin-Chu (TW)
Filed on Oct. 23, 2022, as Appl. No. 17/971,630.
Claims priority of application No. 202122565829.4 (CN), filed on Oct. 25, 2021.
Prior Publication US 2023/0130456 A1, Apr. 27, 2023
Int. Cl. G02F 1/00 (2006.01); F21V 8/00 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133605 (2013.01) [G02B 6/0025 (2013.01); G02F 1/133607 (2021.01)] 12 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a light guide plate, having a light incident surface, a light-emitting surface and a bottom surface, the light-emitting surface and the bottom surface are respectively connected to the light incident surface and opposite to each other;
a light source, disposed on one side of the light incident surface of the light guide plate;
a diffuse reflector, disposed on one side of the bottom surface of the light guide plate; and
a light-splitting film, disposed between the light guide plate and the diffuse reflector, the light-splitting film having a substrate and a plurality of first optical microstructures disposed on one side of the substrate, wherein an extending direction of a long side of each of the plurality of first optical microstructures intersects with the light incident surface of the light guide plate.