US 11,988,920 B1
Direct-lit backlight module for display device and display device
Chang-Min Shao, Taoyuan (TW); Pin-Feng Yu, Taoyuan (TW); and Jyun-Sheng Syu, Taoyuan (TW)
Assigned to Qisda Corporation, Taoyuan (TW)
Filed by Qisda Corporation, Taoyuan (TW)
Filed on Oct. 11, 2023, as Appl. No. 18/378,717.
Claims priority of application No. 202211364014.2 (CN), filed on Nov. 2, 2022.
Int. Cl. G02F 1/133 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133611 (2013.01) [G02F 1/133603 (2013.01); G02F 1/133607 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A direct-lit backlight module for a display device, comprising:
a substrate;
an optical layer, wherein the optical layer and the substrate form an accommodating space;
first light emitting units in the accommodating space, wherein the first light emitting units emit light towards the optical layer and have a first viewing angle;
second light emitting units in the accommodating space, wherein the second light emitting units emit light towards the optical layer and have a second viewing angle; and
a control unit electrically connected to the first light emitting units and the second light emitting units and providing a control signal to selectively drive the first light emitting units and the second light emitting units,
wherein the first light emitting units are adjacent to the second light emitting units, the first light emitting units and the second light emitting units are arranged alternately, and the first viewing angle is larger than the second viewing angle.