US 12,085,819 B1
Display module, driving method, and display device
Huayin Wen, Shenzhen (CN); and Haijiang Yuan, Shenzhen (CN)
Assigned to HKC CORPORATION LIMITED, Shenzhen (CN)
Filed by HKC CORPORATION LIMITED, Shenzhen (CN)
Filed on Mar. 28, 2024, as Appl. No. 18/619,212.
Claims priority of application No. 202310383800.5 (CN), filed on Apr. 3, 2023.
Int. Cl. G02F 1/1347 (2006.01); G02F 1/133 (2006.01); G02F 1/13357 (2006.01); G02F 1/1343 (2006.01); G02F 1/137 (2006.01)
CPC G02F 1/1347 (2013.01) [G02F 1/13306 (2013.01); G02F 1/133617 (2013.01); G02F 1/134309 (2013.01); G02F 1/13706 (2021.01); G02F 1/13712 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A display module, comprising a display panel, a backlight module, a first polarizer, and a second polarizer; wherein a light emitting surface of the backlight module is disposed adjacent to a light incident surface of the display panel, wherein the first polarizer is arranged on a side of the display panel facing away from the backlight module, the second polarizer is arranged on a side of the display panel adjacent to the backlight module, wherein the display module further comprises a light valve regulator arranged between the light emitting surface of the backlight module and the light incident surface of the display panel, wherein the light valve regulator comprises:
a first regulating electrode layer, arranged on a side of the second polarizer facing away from the display panel;
a light regulating layer, arranged on a side of the first regulating electrode layer facing away from the second polarizer, the light regulating layer comprising a first liquid crystal layer and a second liquid crystal layer that are alternately arranged;
a second regulating electrode layer, arranged on a side of the light regulating layer facing away from the first regulating electrode layer, wherein the first controlling electrode layer and the second regulating electrode layer are operative to form an electric field used for regulating the first liquid crystal layer and the second liquid crystal layer; and
a light converting layer, arranged on a side of the second regulating electrode layer facing away from the light regulating layer, the light converting layer comprising a transparent layer and a third polarizer that are alternately arranged, wherein a position of each third polarizer overlaps a position of the respective second liquid crystal layer;
wherein when the display module is in an anti-peeping mode, the first regulating electrode layer and the second regulating electrode layer are not energized, and only light in the first liquid crystal layer is operative to pass through the second polarizer to enter the display panel; and
wherein when the display module is in a wide viewing angle mode, the first regulating electrode layer and the second regulating electrode layer are energized, and both light in the first liquid crystal layer and light in the second liquid crystal layer are operative to pass through the second polarizer to enter the display panel.