Display device and method for fabricating same

Patent metadata

Field	Value
Publication number	US-2021404888-A1
Application number	US-201916770587-A
Country	US
Kind code	A1
Filing date	Dec 3, 2019
Priority date	Oct 14, 2019
Publication date	Dec 30, 2021
Grant date	—

Abstract

The present invention provides a display device and a method for fabricating the same. The display device includes a display area, a bending area, one or more strain sensors disposed on the bending area and configured to detect one or more characteristic parameters of the bending area when the bending area is bent, and a control module connected to the one or more strain sensors and configured to obtain a deformation parameter of a film layer to be detected in the bending area according to the one or more characteristic parameters.

First claim

What is claimed is:

1 . A display device, comprising:
a display area; a bending area; one or more strain sensors disposed in a middle region of the bending area and configured to detect one or more characteristic parameters of the bending area when the bending area is bent, wherein the one or more characteristic parameters comprise at least one of a resistance change amount, a capacitance change amount, an inductance change amount, and a light intensity change amount, and the one or more strain sensors comprise at least one of a resistive strain sensor, a capacitive strain sensor, an inductive strain sensor, and an optical strain sensor; and a control module connected to the one or more strain sensors and configured to obtain a deformation parameter of a film layer to be detected in the bending area according to the one or more characteristic parameters.

2 . The display device according to claim 1 , wherein the one or more strain sensors are embedded inside the bending area.

3 . The display device according to claim 2 , wherein when the one or more strain sensors are configured to detect the resistance change amount of the bending area, the bending area comprises a metal layer, and the one or more strain sensors are disposed on a same layer as the metal layer.

4 . The display device according to claim 3 , wherein the one or more strain sensors are metal sensitive grids.

5 . The display device according to claim 4 , wherein the metal layer comprises one or more metal wires, each metal wire comprises a plurality of branch portions arranged at intervals, and each strain sensor is disposed in a space between two adjacent branch portions.

6 . The display device according to claim 2 , wherein the bending area comprises a metal layer, and the one or more strain sensors and the metal layer are disposed on different layers.

7 . The display device according to claim 1 , wherein the one or more strain sensors are disposed on an outer surface or an inner surface of the bending area.

8 . The display device according to claim 1 , wherein the one or more strain sensors are also disposed at both ends of the bending area.

9 . A display device, comprising:
a display area; a bending area; one or more strain sensors disposed on the bending area and configured to detect one or more characteristic parameters of the bending area when the bending area is bent, wherein the one or more characteristic parameters comprise at least one of a resistance change amount, a capacitance change amount, an inductance change amount, and a light intensity change amount; and a control module connected to the one or more strain sensors and configured to obtain a deformation parameter of a film layer to be detected in the bending area according to the one or more characteristic parameters.

10 . The display device according to claim 9 , wherein the one or more strain sensors are embedded inside the bending area.

11 . The display device according to claim 10 , wherein when the one or more strain sensors are configured to detect the resistance change amount of the bending area, the bending area comprises a metal layer, and the one or more strain sensors are disposed on a same layer as the metal layer.

12 . The display device according to claim 11 , wherein the one or more strain sensors are metal sensitive grids.

13 . The display device according to claim 12 , wherein the metal layer comprises one or more metal wires, each metal wire comprises a plurality of branch portions arranged at intervals, and each strain sensor is disposed in a space between two adjacent branch portions.

14 . The display device according to claim 10 , wherein the bending area comprises a metal layer, and the one or more strain sensors and the metal layer are disposed on different layers.

15 . The display device according to claim 9 , wherein the one or more strain sensors are disposed on an outer surface or an inner surface of the bending area.

16 . The display device according to claim 9 , wherein the one or more strain sensors are disposed in a middle region of the bending area.

17 . The display device according to claim 16 , wherein the one or more strain sensors are also disposed at both ends of the bending area.

18 . The display device according to claim 9 , wherein the one or more strain sensors comprise at least one of a resistive strain sensor, a capacitive strain sensor, an inductive strain sensor, and an optical strain sensor.

19 . A method for fabricating a display device, comprising:
forming a display device comprising a display area and a bending area; detecting one or more characteristic parameters of the bending area when the bending area is bent, wherein the one or more characteristic parameters comprise at least one of a resistance change amount, a capacitance change amount, an inductance change amount, and a light intensity change amount; obtaining a deformation parameter of a film layer to be detected in the bending area according to the one or more characteristic parameters; and adjusting a deformation amount of the bending area to satisfy a preset condition according to the deformation parameter.

20 . The method for fabricating the display device according to claim 19 , wherein the step of adjusting the deformation amount of the bending area to satisfy the preset condition according to the deformation parameter comprises:
adjusting at least one of a structure of the film layer and curvature of the bending area according to the deformation parameter.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• He Jiaqing
• Peng Hao

Classifications

• G01L1/242

  the material being an optical fibre · CPC title

• G01L1/22

  using resistance strain gauges · CPC title

• G01L1/14 Primary

  by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators · CPC title

• G01L1/24

  by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis {using infrared, visible light, ultraviolet} · CPC title

• G01B11/16

  for measuring the deformation in a solid, e.g. optical strain gauge · CPC title