US 11,815,752 B2
Privacy display module comprising a light-adjusting component that can be configured to have a sharing mode and an anti-peeping mode, display apparatus and vehicle comprising the same
Longcai Xin, Shanghai (CN); Zhiyuan Zhang, Shanghai (CN); and Fan Tian, Shanghai (CN)
Assigned to Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed by Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai (CN)
Filed on Jan. 12, 2023, as Appl. No. 18/153,454.
Application 18/153,454 is a continuation of application No. 17/591,581, filed on Feb. 2, 2022, granted, now 11,586,063.
Claims priority of application No. 202111157466.9 (CN), filed on Sep. 30, 2021.
Prior Publication US 2023/0168528 A1, Jun. 1, 2023
Int. Cl. G02F 1/13 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); G02F 1/1337 (2006.01); G02F 1/1343 (2006.01)
CPC G02F 1/1323 (2013.01) [G02F 1/1337 (2013.01); G02F 1/13439 (2013.01); G02F 1/133531 (2021.01); G02F 1/133606 (2013.01)] 37 Claims
OG exemplary drawing
 
1. A display module, comprising:
a backlight component;
a display component located at a side of the backlight component facing toward a light-emitting direction of the display module;
a light-adjusting component located at the side of the backlight component facing toward the light-emitting direction of the display module;
a first polarizer located at a side of the display component facing away from the light-adjusting component, wherein the first polarizer has a first absorption axis;
a second polarizer located between the display component and the light-adjusting component, wherein the second polarizer has a second absorption axis perpendicular to the first absorption axis; and
a third polarizer is located at a side of the light-adjusting component facing away from the display component, wherein the third polarizer has a third absorption axis parallel to the second absorption axis,
wherein the backlight component comprises a first light guide structure and a light regulating structure, the first light guide structure comprises a first light source and a first light guide plate, and the light regulating structure is located at a side of the first light guide plate facing toward the display component and is configured to regulate a transmission direction of light emitted from the first light guide plate;
wherein the light-adjusting component comprises a first electrode, a first liquid crystal located at a side of the first electrode facing away from the backlight component, and a second electrode located at a side of the first liquid crystal facing away from the backlight component; and the light-adjusting component and the light regulating structure are configured to have uniformity in the regulating direction of light; and
wherein the display module has a sharing mode and an anti-peeping mode, wherein, in the sharing mode, the first electrode and the second electrode are not energized, and the first liquid crystal is in a wide viewing angle state; and, in the anti-peeping mode, the first electrode and the second electrode drive the first liquid crystal to be in a narrow viewing angle state.