Display panel and wearable device

Patent metadata

Field	Value
Publication number	US-12436564-B2
Application number	US-202318469001-A
Country	US
Kind code	B2
Filing date	Sep 18, 2023
Priority date	Jan 31, 2023
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A display device and a wearable device are provided, including: a middle frame assembly, including a fixed middle frame and a first sliding middle frame slidably connected, the fixed middle frame and the first sliding middle frame sliding relatively along a first direction and together enclosing a middle frame assembly cavity; a flexible display screen including a first free portion corresponding to the first sliding middle frame, with the first free portion being curled and concealed; a synchronized expansion mechanism located within the middle frame assembly cavity, with a fixed pivot shaft extending along a second direction; a first transmission component, fixedly connected to the first sliding middle frame with one end and movably connected to the fixed pivot shaft with another end; and a first winding component fixedly connected to the first free portion with one end and retractably connected to the fixed pivot shaft with another end.

First claim

What is claimed is:

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.

2. The display device according to claim 1 , wherein the fixed middle frame comprises a fixed upper wall, a fixed lower wall, and two fixed side walls disposed between the fixed upper wall and the fixed lower wall; the fixed upper wall, the fixed lower wall, and the fixed side walls collectively enclose the fixed middle frame cavity; the synchronized expansion mechanism is at least partially disposed within the fixed middle frame cavity; and the fixed lower wall is disposed on one side of the fixed upper wall away from the flexible display screen.

3. The display device according to claim 2 , wherein both the first sliding middle frame and the second sliding middle frame are slidably engaged with the fixed middle frame.

4. The display device according to claim 3 , wherein the first sliding middle frame comprises a first sliding upper wall, a first sliding lower wall, and a first sliding side wall disposed between the first sliding upper wall and the first sliding lower wall; the first sliding lower wall and the first sliding side wall are disposed within the fixed middle frame cavity; the first sliding upper wall is disposed above the fixed upper wall;
the second sliding middle frame comprises a second sliding upper wall, a second sliding lower wall, and a second sliding side wall disposed between the second sliding upper wall and the second sliding lower wall; the second sliding lower wall and the second sliding side wall are disposed outside the fixed middle frame cavity; and the second sliding upper wall is disposed above the fixed upper wall.

5. The display device according to claim 4 , wherein a surface of the fixed middle frame oriented toward the flexible display screen is provided with spaced protrusions and sliding grooves extending along the first direction and alternately arranged, the first sliding upper wall and the second sliding upper wall each comprise at least one first sliding rail and at least one second sliding rail extending along the first direction; and the first sliding rail and the second sliding rail cooperate with the sliding grooves, such that the at least one first sliding rail and the at least one second sliding rail slide along the first direction in the sliding grooves.

6. The display device according to claim 5 , wherein the first sliding rail and the second sliding rail are alternately arranged at intervals in the sliding grooves.

7. The display device according to claim 5 , wherein top surfaces of the spaced protrusions are flush with top surfaces of the first sliding rail and the second sliding rail.

8. The display device according to claim 1 , wherein the first transmission component comprises a first spur gear and a first rack, the first spur gear is fixedly sleeved on the fixed pivot shaft, one end of the first rack meshes with the first spur gear, and an opposing end of the first rack is fixedly connected to the first sliding middle frame;
the second transmission component comprises a second spur gear and a second rack, the second spur gear is fixedly sleeved on the fixed pivot shaft, one end of the second rack meshes with the second spur gear, and an opposing end of the second rack is fixedly connected to the second sliding middle frame.

9. The display device according to claim 8 , wherein the first spur gear and the second spur gear are a same one spur gear, and the f

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Shan Xinpeng

Classifications

• G06F1/1652

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G06F1/1624

  with sliding enclosures, e.g. sliding keyboard or display · CPC title

• G06F1/1622 Primary

  with enclosures rotating around an axis perpendicular to the plane they define or with ball-joint coupling, e.g. PDA with display enclosure orientation changeable between portrait and landscape by rotation with respect to a coplanar body enclosure · CPC title

• G04C23/04

  Housings, supports, shielding, or similar stationary parts · CPC title

• G04B3/04

  Rigidly-mounted keys, knobs or crowns {(jointed winding-stem G04B37/06)} · CPC title