US 12,135,451 B1
Backlight module and display device
Jinrong Zheng, Shenzhen (CN); and Haijiang Yuan, Shenzhen (CN)
Assigned to HKC CORPORATION LIMITED, Shenzhen (CN)
Filed by HKC CORPORATION LIMITED, Shenzhen (CN)
Filed on Dec. 5, 2023, as Appl. No. 18/530,150.
Claims priority of application No. 202310448371.5 (CN), filed on Apr. 24, 2023.
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0066 (2013.01) [G02B 6/0076 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a light guide plate assembly comprising a first light guide plate and a second light guide plate disposed back to back in a first direction;
an adjustment member disposed on a side of the light guide plate assembly in a second direction intersecting with the first direction;
a light emitter connected to the adjustment member; and
a light intensifier connected to the adjustment member and disposed between the light emitter and the light guide plate assembly in the second direction, wherein the light intensifying film is a structure composed of a prismatic bar and a substrate, wherein
the adjustment member can drive the light emitter and the light intensifier to move simultaneously in reverse directions in the first direction, so that the light emitter is opposite the light intensifier in the second direction, and light emitted by the light emitter passes through the light intensifier and enters the first light guide plate and the second light guide plate respectively, or, the light emitter and the light intensifier are far away from each other, and light emitted by the light emitter directly enters one of the first light guide plate and the second light guide plate;
wherein the backlight module comprises at least a first working state, a second working state, and a third working state, and the adjustment member can drive the light intensifier and the light emitter to move to switch between the first working state, the second working state, and the third working state, wherein,
in the first working state, the light emitter is opposite a connection between the first light guide plate and the second light guide plate, and an orthographic projection of the light source of the light emitter in the second direction is at a center of the light intensifier;
in the second working state, the orthographic projection of the light source of the light emitter in the second direction is at a center of the first light guide plate, and an orthographic projection of the light intensifier in the second direction is at the second light guide plate; and
in the third working state, the orthographic projection of the light source of the light emitter in the second direction is at a center of the second light guide plate, and the orthographic projection of the light intensifier in the second direction is at the first light guide plate.