Defect repairing method of flexible display panel

Patent metadata

Field	Value
Publication number	US-10483499-B2
Application number	US-201815968279-A
Country	US
Kind code	B2
Filing date	May 1, 2018
Priority date	Nov 9, 2017
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

The present disclosure provides a defect repairing method of a flexible display panel including: providing a transparent substrate, the transparent substrate including a first surface and a second surface opposite to each other; forming a flexible substrate on the first surface; forming an array substrate layer on the surface of the flexible substrate, wherein the array substrate layer includes a display area and a peripheral area; irradiating the display area with a patterned laser on the second surface; and annealing the transparent substrate on which the array substrate layer and the flexible substrate are formed. The defect repairing method of the flexible display panel can quickly and easily repair various defects caused by the laser irradiation of the flexible display panel so as to optimize the display effect of the flexible display panel and improve the yield of the flexible display panel.

First claim

What is claimed is:

1. A defect repairing method of a flexible display panel, comprising:
providing a transparent substrate, the transparent substrate comprising a first surface and a second surface opposite to each other;
forming a flexible substrate on the first surface;
forming an array substrate layer on a surface of the flexible substrate, wherein the array substrate layer comprises a display area and a peripheral area;
irradiating the display area with a patterned laser on the second surface; and
annealing the transparent substrate on which the array substrate layer and the flexible substrate are formed,
wherein the step of irradiating the display area with a patterned laser on the second surface comprises, providing a mask having a pattern and attaching the mask to the second surface and irradiating the mask by an ultraviolet laser; separating the flexible substrate not blocked by the mask from the transparent substrate, and adhering the flexible substrate covered by the mask and the transparent substrate to each other, and
wherein the pattern of the mask makes a position on the transparent substrate not obscured by the mask directly opposite to the display area, the position blocked by the mask is directly opposite to the peripheral area.

2. The defect repairing method of a flexible display panel according to claim 1 , wherein the step of annealing the transparent substrate on which the array substrate layer and the flexible substrate are formed comprises, providing an annealing device, placing the flexible substrate in the annealing device, presetting a preset temperature and a preset constant temperature time; starting the annealing device to be heated, the annealing device reaching the preset temperature, and annealing the transparent substrate on which the array substrate layer and the flexible substrate are formed at the preset temperature and the preset constant temperature time.

3. The defect repairing method of a flexible display panel according to claim 1 , wherein after the step of annealing the flexible substrate, further comprising:
forming an organic light-emitting layer and an encapsulating layer sequentially on a surface of the array substrate layer to form a flexible display panel;
separating the transparent substrate located in the peripheral area and the flexible substrate.

4. The defect repairing method of a flexible display panel according to claim 3 , wherein in the step of separating the transparent substrate and the flexible substrate, a glass substrate and the flexible substrate are separated by a cutting method.

5. The defect repairing method of a flexible display panel according to claim 3 , wherein in the step of separating the transparent substrate and the flexible substrate, a glass substrate and the flexible substrate are separated by a laser separation technique.

6. The defect repairing method of a flexible display panel according to claim 1 , wherein the step of forming a flexible substrate on the first surface and forming an array substrate layer on a surface of the flexible substrate comprises uniformly coating a polymer solution on the first surface to form the flexible substrate.

7. The defect repairing method of a flexible display panel according to claim 2 , wherein the annealing device comprises a baking cavity and a heater located at one side of the baking cavity, the baking cavity is configured to heat the transparent substrate forming the array substrate layer and the flexible substrate, and the heater is configured to provide a heat source for heating.

8. The defect repairing method of a flexible display panel according to claim 7 , wherein the baking cavity is provided with a plurality of drawable brackets, and the brackets are arranged at equal distances from each other.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Wang Wei
• Zhu Xiaoguang

Classifications

• H01L2227/326

  Electricity · mapped topic

• H01L51/003

  Electricity · mapped topic

• H01L27/3244

  Electricity · mapped topic

• H01L51/0097

  Electricity · mapped topic

• H01L2251/568

  Electricity · mapped topic