Display panel and manufacturing method thereof, display device

• US 10,330,965 B2
• Filed: 03/24/2016
• Issued: 06/25/2019
• Est. Priority Date: 04/21/2015
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Wang, Junwei, Cui, Xiaopeng, Chen, Weitao
• Primary Examiner(s): Leja, Ronald W
• Application Number:
  US15/321,552
• Publication Number:
  US 20170205644A1
• Time in Patent Office: 1,188 Days
• Field of Search: 361 56
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133394 Piezoelectric elements associated with the cells
• CPC Class Codes: G02F 2201/503 Arrangements improving the resistance to shock
• CPC Class Codes: G09F 9/301 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
• CPC Class Codes: H01L 21/77 Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate electrically programmable read-only memories or multistep manufacturing processes therefor H10B69/00
• CPC Class Codes: H01L 27/12 the substrate being other than a semiconductor body, e.g. an insulating body
• CPC Class Codes: H01L 27/1218 with a particular composition or structure of the substrate
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H02H 7/20 for electronic equipment for converters H02H7/10; for electric measuring instruments G01R1/36; for dc voltage or current semiconductor regulators G05F1/569; for amplifiers H03F1/52; for electronic switching circuits H03K17/08

Abstract

Embodiments of this disclosure disclose a display panel and a manufacturing method thereof, as well as a display device. The display panel comprises an upper substrate and a lower substrate arranged opposite to each other and packaged together, and further comprises an electrically controlled deformable film arranged on a surface of the upper substrate facing away from the lower substrate. The electrically controlled deformable film is configured to adjust its curvature based on a voltage applied on the electrically controlled deformable film, and enable a curvature of the upper substrate and a curvature of the lower substrate to be adjusted synchronously.

Claims

1. A display panel, comprising an upper substrate and a lower substrate arranged opposite to each other and packaged together, wherein the display panel further comprises an electrically controlled deformable film, the electrically controlled deformable film is arranged on a surface of the upper substrate facing away from the lower substrate;

and

wherein the electrically controlled deformable film is configured to adjust its curvature based on a voltage applied on the electrically controlled deformable film, and enable a curvature of the upper substrate and a curvature of the lower substrate to be adjusted synchronously,

wherein a first end of the electrically controlled deformable film is electrically connected with a power source signal line on the lower substrate, a second end of the electrically controlled deformable film is electrically connected with a ground signal line, wherein the first end and the second end are opposite to each other and both attached to a surface of the upper substrate facing away from the lower substrate,

wherein a power supply protection circuit is disposed on a surface of the lower substrate facing towards the upper substrate, the power supply protection circuit is electrically connected with the power source signal line and configured to protect the power source signal line, wherein the first end of the electrically controlled deformable film is electrically connected with the power supply protection circuit through a first electrically conductive component.

2. The display panel as claimed in claim 1, wherein shape and size of the electrically controlled deformable film match with the upper substrate.

3. A display device, comprising a display panel as claimed in claim 2.

4. The display panel as claimed in claim 1, wherein the power supply protection circuit comprises a first thin film transistor, and wherein a gate electrode and a source electrode of the first thin film transistor are electrically connected with the power source signal line, and a drain electrode of the first thin film transistor is electrically connected with the first electrically conductive component.

5. A display device, comprising a display panel as claimed in claim 4.

6. The display panel as claimed in claim 1, wherein an ESD protection circuit electrically connected with the ground signal line is disposed on the surface of the lower substrate facing towards the upper substrate, and the other of two opposite ends of the electrically controlled deformable film is electrically connected with the ESD protection circuit through a second electrically conductive component.

7. The display panel as claimed in claim 6, wherein the ESD protection circuit comprises a second thin film transistor and a third thin film transistor, wherein a gate electrode and a source electrode of the second thin film transistor, and a drain electrode of the third thin film transistor are electrically connected with the second electrically conductive component, and wherein a drain electrode of the second thin film transistor, and a gate electrode and a source electrode of the third thin film transistor are electrically connected with the ground signal line.

8. The display panel as claimed in claim 7, wherein the first electrically conductive component and the second electrically conductive component are silver points.

9. A display device, comprising a display panel as claimed in claim 7.

10. A display device, comprising a display panel as claimed in claim 8.

11. A display device, comprising a display panel as claimed in claim 6.

12. The display panel as claimed in claim 1, wherein a material of the electrically controlled deformable film is an electro deformable material.

13. The display panel as claimed in claim 12, wherein a thickness of the electrically controlled deformable film is 100 μ

m to 200 μ

m.

14. The display panel as claimed in claim 1, wherein the lower substrate is an array substrate, and the upper substrate is a color film substrate or a package substrate.

15. A display device, comprising a display panel as claimed in claim 1.

16. A manufacturing method of a display panel, comprising:

packaging an upper substrate and a lower substrate;

forming an electrically controlled deformable material coating on a surface of the upper substrate facing away from the lower substrate;

bending the upper substrate with the electrically controlled deformable material coating and the lower substrate, after drying the electrically controlled deformable material coating to form an electrically controlled deformable film, cooling the electrically controlled deformable film.

17. The manufacturing method of a display panel as claimed in claim 16, wherein forming an electrically controlled deformable material coating on a surface of the upper substrate facing away from the lower substrate comprises:

after coating an electrically controlled deformable material on the surface of the upper substrate facing away from the lower substrate, forming an electrically controlled deformable material coating through natural volatilization or prebaking of 30 degrees Celsius.

18. The manufacturing method of a display panel as claimed in claim 16, further comprising:

prior to packaging the upper substrate and the lower substrate, forming a power source signal line and a ground signal line on the lower substrate; and

after cooling the electrically controlled deformable film, forming a first electrically conductive component electrically connected with the power source signal line and a second electrically conductive component electrically connected with the ground signal line on different ends of the electrically controlled deformable film respectively.

19. The manufacturing method of a display panel as claimed in claim 18, further comprising:

prior to packaging the upper substrate and the lower substrate, forming a power supply protection circuit and an ESD protection circuit on the lower substrate, wherein the power supply protection circuit is electrically connected with the power source signal line, and the ESD protection circuit is electrically connected with the ground signal line.