Test apparatus for flexible screen

Patent metadata

Field	Value
Publication number	US-12061176-B2
Application number	US-202217667133-A
Country	US
Kind code	B2
Filing date	Feb 8, 2022
Priority date	Jan 10, 2020
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

A testing apparatus for a flexible screen includes a slide rail, a reel, and a clamping member. The reel is disposed at an end of the slide rail in the extension direction of the slide rail which the axial direction of the reel is perpendicular to. The reel has a hollow structure and is connected to a evacuating device through a gas path formed in the hollow structure to enable the evacuating device to vacuumize inside of the reel to fit the flexible screen and coil around the reel. The reel is configured to affix first end of flexible screen and rotate to coil the flexible screen. The clamping member is configured to clamp a second end of the flexible screen opposite to the first end. The reel is further configured to rotate to drive, through the flexible screen, the reel and the clamping member to slide towards each other along the slide rail.

First claim

What is claimed is:

1. A testing apparatus for a flexible screen, comprising:
a slide rail;
a reel, wherein the reel is disposed at an end of the slide rail in an extension direction of the slide rail, an axial direction of the reel is perpendicular to the extension direction of the slide rail, the reel has a hollow structure, the reel is connected to a evacuating device through a gas path formed in the hollow structure to enable the evacuating device to vacuumize an inside of the reel to make the flexible screen attached to the reel and coil around the reel, and the reel is configured to affix a first end of the flexible screen and rotate to coil the flexible screen, the reel comprises two thin film structures disposed in a direction perpendicular to the axial direction thereof and a slot disposed between the two thin film structures and extending in the axial direction thereof; and
a clamping member, wherein the clamping member is configured to clamp a second end of the flexible screen opposite to the first end and the reel is further configured to rotate to drive, through the flexible screen, the reel, and the clamping member to slide towards each other along the slide rail.

2. The apparatus of claim 1 , wherein a plurality of adsorbent holes is disposed on a side wall of the reel, the adsorbent holes are configured to form the gas path, and the evacuating device is configured to vacuumize the inside of the reel and adsorb the flexible screen through the adsorbent holes to make the flexible screen attach attached to the reel and coil around the reel.

3. The apparatus of claim 1 , wherein the evacuating device is further configured to vacuumize a space between the two thin film structures through the slot to clamp and affix the first end of the flexible screen through the two thin film structures.

4. The apparatus of claim 1 , wherein the reel is affixed to the slide rail, and the reel is configured to rotate to drive, through the flexible screen, the clamping member to slide along the slide rail in a direction towards the reel; or
the clamping member is affixed to the slide rail, and the reel is configured to rotate and drive, through the flexible screen, the reel to slide along the slide rail in a direction towards the clamping member.

5. The apparatus of claim 1 , wherein the second end of the flexible screen is attached to a surface of the clamping member away from the slide rail; or
the clamping member comprises a first clamping member and a second clamping member, wherein the first clamping member and the second clamping member are located on two sides of a portion of the clamped flexible screen, and the first clamping member and the second clamping member are configured to clamp the second end of the flexible screen via a pressure point.

6. The apparatus of claim 5 , wherein the second end of the flexible screen is attached to the surface of the clamping member away from the slide rail through an adhesive tape or in a mechanical manner.

7. The apparatus of claim 1 , further comprising:
an alignment member, wherein the alignment member is disposed at a position where the clamping member is located and the clamping member is aligned with the second end of the flexible screen.

8. The apparatus of claim 7 , wherein the alignment member comprises an infrared positioning member.

9. The apparatus of claim 1 , further comprising:
a coil monitoring member, wherein the coil monitoring member is disposed on a side of the reel in the axial direction of the reel and configured to monitor a fit state between the flexible screen and the reel and generate a fit monitoring signal.

10. The apparatus of claim 9 , wherein the coil monitoring apparatus comprises a subminiature camera for real-time acquiring the fit state between the flexible screen and the reel.

11. The apparatus of claim 9 , wherein the coil monitoring member is configured to monitor a distance between a surface of the flexible screen coiled on the reel farthest from the reel and an outer surface of the reel and generate the fit monitoring signal.

12. The apparatus of claim 1 , further comprising:
at least one tension sensing member, wherein the at least one tension sensing member is configured to detect tension received by the flexible screen in the extension direction of the slide rail and generate a tension detection signal.

13. The apparatus of claim 12 , wherein the at least one tension sensing member comprises at least two tension sensing members disposed at different positions in the extension direction of the slide rail.

14. The apparatus of claim 12 , wherein the at least one tension sensing member comprises at least three tension sensing members respectively disposed at the first end of the flexible screen, the second end of the flexible screen, and a center position between the first end of the flexible screen and the second end of the flexible screen in the extension direction of the slide rail.

15. The apparatus of claim 12 , wherein each of the at least one tension sensing member comprises at least one tension sensing sub-member, and in a thickness direction of the flexible screen, the at least one tension sensing sub-member is disposed on at least one side of the flexible screen and in contact with the flexible screen.

16. The apparatus of claim 12 , wherein each of the at least one tension sensing member comprises a plurality of tension sensing sub-members, and in a thickness direction of the flexible screen, the plurality of tension sensing sub-members is disposed on two sides of the flexible screen.

17. The apparatus of claim 15 , wherein each of the at least one tension sensing sub-member comprises a tension strain gauge.

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Ma Yuexing
• Dong Shuanzhu

Classifications

• G09F9/301

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• G01N2203/0647

  Image analysis · CPC title

• G01N2203/0417

  using vacuum · CPC title

• G01N2203/0075

  Strain-stress relations or elastic constants · CPC title

• G01N2203/0017

  Tensile · CPC title