US 12,436,564 B2
Display panel and wearable device
Xinpeng Shan, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD, Wuhan (CN)
Filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Hubei (CN)
Filed on Sep. 18, 2023, as Appl. No. 18/469,001.
Claims priority of application No. 202310099771.X (CN), filed on Jan. 31, 2023.
Prior Publication US 2024/0255990 A1, Aug. 1, 2024
Int. Cl. G06F 1/16 (2006.01); G04B 3/04 (2006.01); G04C 23/04 (2006.01)
CPC G06F 1/163 (2013.01) [G04B 3/04 (2013.01); G04C 23/04 (2013.01); G06F 1/1622 (2013.01); G06F 1/1624 (2013.01); G06F 1/1652 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device, comprising:
a middle frame assembly, comprising a fixed middle frame, and a first sliding middle frame and a second sliding middle frame both slidably connected to the fixed middle frame, wherein the fixed middle frame and the first sliding middle frame slide relatively in a first direction and form a middle frame assembly cavity, and the middle frame assembly cavity comprises a fixed middle frame cavity of the fixed middle frame; the first sliding middle frame and the second sliding middle frame are slidably connected to two opposite ends of the fixed middle frame; the first direction is a direction from the first sliding middle frame towards the second sliding middle frame; the fixed middle frame, the first sliding middle frame, and the second sliding middle frame together define the middle frame assembly cavity;
a flexible display screen, disposed on one side of the middle frame assembly and comprising a first free portion and a second free portion, the first free portion arranged corresponding to the first sliding middle frame, the second free portion arranged corresponding to the second sliding middle frame, wherein the first free portion and the second free portion are each curvable to be concealed in the middle frame assembly cavity; and
a synchronized expansion mechanism disposed within the middle frame assembly cavity, the synchronized expansion mechanism comprising:
a fixed pivot shaft extending along a second direction, disposed within the fixed middle frame cavity, wherein the second direction is perpendicular to the first direction;
a first transmission component, wherein one end of the first transmission component is fixedly connected to the first sliding middle frame, and an opposing end of the first transmission component is movably connected to the fixed pivot shaft;
a first winding component, wherein one end of the first winding component is fixedly connected to the first free portion, and an opposing end of the first winding component is retractably connected to the fixed pivot shaft, the first winding component comprising a first line groove and a first traction line, wherein the first line groove is securely sleeved on the fixed pivot shaft, one end of the first traction line is wound in the first line groove, and another end of the first traction line is fixedly connected to the first free portion;
a second transmission component, wherein one end of the second transmission component is fixedly connected to the second sliding middle frame, and an opposing end of the second transmission component is movably connected to the fixed pivot shaft; and
a second winding component, wherein one end of the second winding component is fixedly connected to the second free portion, and an opposing end of the second winding component is retractably connected to the fixed pivot shaft, the second winding component comprising a second line groove and a second traction line, wherein the second line groove is securely sleeved onto the fixed pivot shaft, one end of the second traction line is wound in the second line groove, and another end of the second traction line is fixedly connected to the second free portion,
wherein when the fixed pivot shaft rotates, the first transmission component and the first winding component move in synchronous linkage, the first transmission component drives the first sliding middle frame to slide relative to the fixed middle frame in the first direction, and the first winding component drives the first free portion to wind and retract to be at least partially concealed within the middle frame assembly cavity or to expand from the middle frame assembly cavity;
wherein when the fixed pivot shaft rotates, the second transmission component and the second winding component move in synchronous linkage, the second transmission component drives the second sliding middle frame to slide relative to the fixed middle frame in an opposite direction to the first sliding middle frame in the first direction, and the second winding component drives the second free portion to at least partially retract and wind to be concealed within the middle frame assembly cavity or extend from the middle frame assembly cavity;
wherein a winding direction of the first traction line in the first line groove is opposite to a winding direction of the second traction line in the second line groove.