Method and system for bending test of flexible screen

Patent metadata

Field	Value
Publication number	US-10197482-B2
Application number	US-201415105981-A
Country	US
Kind code	B2
Filing date	Dec 17, 2014
Priority date	Dec 18, 2013
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

A method for bending test of a flexible screen is disclosed, including: connecting the flexible screen to a mounting device; conducting a mechanical extrusion test to the flexible screen to bend the flexible screen, in which an extrusion point for the mechanical extrusion test is away from connection points between the flexible screen and the mounting device; and conducting a bending performance detection to the flexible screen. And a system for bending test of a flexible screen is also disclosed. The bending performance of the flexible screen can be tested by simulating an environment for the flexible screen in the mechanical extrusion test, and compared with the traditional methods and apparatuses for bending test of a flexible screen, the method and system for bending test of a flexible screen according to the present disclosure are convenience for operation and low cost in testing.

First claim

The invention claimed is:

1. A method for bending test of a flexible screen, comprising:
connecting the flexible screen to a mounting device, the mounting device adapted to fasten the flexible screen in a relative flexible manner using an elastic material so that the mounting device is deformed when the flexible screen is extruded;
conducting a mechanical extrusion test to the flexible screen to bend the flexible screen by placing an extrusion point for the mechanical extrusion test away from connection points between the flexible screen and the mounting device; and
conducting a bending performance detection to the flexible screen,
wherein conducting a mechanical extrusion test includes approaching, by an extrusion device, to the flexible screen, the extrusion device including an extrusion head in a shape of sphere with a smoothly curved surface,
wherein the extrusion head is regulated by a regulating device of the mounting device so that different positions of the extrusion point are selected in each test, and
wherein the mechanical extrusion test is repeated up to multiple times in a preset time.

2. The method of claim 1 , wherein the connecting the flexible screen to a mounting device comprises connecting opposite ends of the flexible screen to the mounting device; and
conducting a mechanical extrusion test to the flexible screen comprises extruding the flexible screen so that the degree of bending of the flexible screen is gradually increased.

3. The method of claim 1 , wherein the conducting a mechanical extrusion test to the flexible screen comprises extruding the flexible screen by a preset force at a preset frequency within a preset time period.

4. The method of claim 3 , wherein there are a plurality of preset frequencies and a plurality of preset forces, and the conducting a mechanical extrusion test to the flexible screen comprises extruding the flexible screen by at least one preset force respectively at one preset frequency.

5. The method of claim 1 , wherein the conducting a mechanical extrusion test to the flexible screen comprises mechanically extruding a plurality of preset extrusion points in the flexible screen respectively.

6. The method of claim 1 , wherein the conducting a mechanical extrusion test to the flexible screen comprises mechanically extruding the flexible screen by a plurality of preset extrusion areas.

7. The method of claim 1 , wherein conducting a bending performance detection to the flexible screen comprises:
detecting a mechanical reliability of the flexible screen after conducting the mechanical extrusion test to the flexible screen.

8. The method of claim 1 , wherein conducting a bending performance detection to the flexible screen comprises:
detecting an optical reliability and/or electrical reliability of the flexible screen at the time of/after conducting the mechanical extrusion test to the flexible screen.

9. A system for bending test of a flexible screen, comprising:
a mounting device, configured to connected with the flexible screen, the mounting device adapted to fasten the flexible screen in a relative flexible manner using an elastic material so that the mounting device is deformed when the flexible screen is extruded;
an extrusion device, configured to conduct a mechanical extrusion test to the flexible screen to bend the flexible screen by placing an extrusion point for the mechanical extrusion test away from connection points between the flexible screen and the mounting device; and
a detection device, configured to conduct a bending performance detection to the flexible screen,
wherein the extrusion device includes an extrusion head in a shape of sphere with a smoothly curved surface,
wherein the mounting device further comprises a regulating device, and the extrusion head is regulated by the regulating device of the mounting device so that different positions of the extrusion point are selected in each test, and
wherein the mechanical extrusion test is repeated up to multiple times in a preset time.

10. The system of claim 9 , wherein the mounting device is adapted to be connected to opposite ends of the flexible screen; the extrusion device is adapted to approach the flexible screen, and extrude the flexible screen so that the degree of bending of the flexible screen is gradually increased.

11. The system of claim 9 , wherein the mounting device comprises a fixing support, and a mounting component provided on the fixing support and configured to fix the flexible screen.

12. The system of claim 11 , wherein the mounting component is made of an elastic material and is adapted to be deformed and stretched when the flexible screen is extruded.

13. The system of claim 11 , wherein the extrusion device comprises an extrusion component and a drive;
the extrusion component comprises a connecting rod connected with the extrusion head; and
the drive is fixed on the fixing support, the connecting rod is connected to the extrusion head, and the extrusion head is driven to conduct the mechanical extrusion test to the flexible screen.

14. The system of claim 13 , wherein the regulating device is provided on the fixing support and adapted to move with respect to the fixing support, the drive being connected to the fixing support via the regulating device.

15. The system of claim 13 , wherein the connecting rod is coupled to the extrusion head in a threaded connection.

Assignees

• Kunshan New Flat Panel Display Technology Ct Co Ltd
• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Gao Sheng
• Liu Dongdong
• Huang Xiuqi

Classifications

• G01N3/00

  Investigating strength properties of solid materials by application of mechanical stress · CPC title

• H01L51/0031

  Electricity · mapped topic

• Y02E10/549

  Organic PV cells · CPC title

• G09G3/006

  Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309) · CPC title

• G01N3/20 Primary

  by applying steady bending forces (G01N3/26, G01N3/28 take precedence) · CPC title