Flexible display panel and manufacturing method thereof, and flexible display apparatus

Patent metadata

Field	Value
Publication number	US-12557487-B2
Application number	US-202318504517-A
Country	US
Kind code	B2
Filing date	Nov 8, 2023
Priority date	Dec 20, 2019
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A flexible display panel and a manufacturing method thereof, and a flexible display apparatus are disclosed. The flexible display panel includes: a flexible substrate, the flexible substrate including a display area, a peripheral area, a welding area and a bending area, and the bending area including a first edge; and the flexible display panel further includes: a barrier and an organic insulation layer, wherein the peripheral area includes a peripheral transition area between the bending area and the display area, the organic insulation layer in the peripheral transition area is provided with a first groove, the first groove is on one side of the barrier and extends along a direction substantially parallel to a bending axis, and the first groove is on one side of the first edge proximal to the display area.

First claim

The invention claimed is:

1 . A flexible display panel, comprising:
a flexible substrate, the flexible substrate comprising: a display area; a peripheral area, surrounding a periphery of the display area; a welding area, on one side of the peripheral area distal to the display area; and a bending area, between the peripheral area and the welding area, the bending area being configured to be bent along a bending axis; and an organic insulation layer, on the flexible substrate, wherein the organic insulation layer in the bending area is provided with at least one groove, and the at least one groove extends along a direction perpendicular to the bending axis, wherein the flexible substrate is provided with a plurality of gate lines extending along a first direction and a plurality of data lines extending along a second direction; the plurality of gate lines and the plurality of data lines intersect to define a plurality of pixel areas, a pixel is arranged in each of the pixel areas, and each pixel is provided with an organic light-emitting element, wherein the organic insulation layer in the bending area is provided with a third groove and a fourth groove, the third groove and the fourth groove extend along a direction perpendicular to the bending axis, wherein the flexible display panel further comprises a signal line on the flexible substrate and a second fanout area between the bending area and the welding area, the signal line comprises a plurality of signal lines, and each of the third groove and the fourth groove is between one of the plurality of signal lines, which is farthest distal to the second fanout area, and an edge of the flexible substrate.

2 . The flexible display panel according to claim 1 ,
wherein the bending area comprises a first edge, wherein the flexible substrate further comprises a barrier on the flexible substrate, the barrier is in the peripheral area and surrounds the periphery of the display area, wherein the peripheral area comprises a peripheral transition area between the bending area and the display area, the organic insulation layer in the peripheral transition area is provided with a first groove, the first groove is on one side of the barrier distal to the display area and extends along a direction substantially parallel to the bending axis, and the first groove is on one side of the first edge proximal to the display area.

3 . The flexible display panel according to claim 2 , wherein the peripheral transition area comprises a first fanout area, and an orthographic projection of the first groove on the flexible substrate partially overlaps with the first fanout area.

4 . The flexible display panel according to claim 3 , wherein
the second fanout area abuts on the bending area, wherein the organic insulation layer between the bending area and the welding area is provided with a second groove, and an orthographic projection of the second groove on the flexible substrate partially overlaps with the second fanout area.

5 . The flexible display panel according to claim 4 , wherein the bending area further comprises a second edge, the second edge is disposed opposite to the first edge, extending directions of the second edge and the first edge are same, and the second groove is on one side of the second edge proximal to the welding area and extends along a direction substantially parallel to the bending axis.

6 . The flexible display panel according to claim 2 , wherein each of the third groove and the fourth groove comprises a first end and a second end, the third groove and the fourth groove extend across the bending area, the first end of the third groove and the first end of the fourth groove are respectively connected with two opposite ends of the first groove, and the second end of the third groove and the second end of the fourth groove are respectively connected with two opposite ends of the second groove.

7 . The flexible display panel according to claim 6 ,
wherein the signal line being led out the display area and at least partially extending to the welding area through the first fanout area and the bending area along the direction perpendicular to the bending axis, wherein no overlapping area is formed between the orthographic projection of each of the first groove, the second groove, the third groove and the fourth groove on the flexible substrate and an orthographic projection of the signal line on the flexible substrate, wherein each of the first groove and the second groove is disconnected at a position intersecting with the signal line, the first groove has a first spacing at the intersecting position, the second groove has a second spacing at the intersecting position, and the signal line extends to pass through the first spacing and the second spacing.

8 . The flexible display panel according to claim 7 , further comprising:
a touch electrode, in the display area and configured to detect occurrence of a touch in the display area, the signal line comprising: a touch signal line, configured to be electrically connected with the touch electrode in the display area, wherein the touch signal line comprises a first touch portion in the bending area and a second touch portion outside the bending area, and the first touch portion of the touch signal line and the second touch portion of the touch signal line are in different film layers.

9 . The flexible display panel according to claim 8 , wherein the signal line further comprises:
a common signal line, configured to be electrically connected with the organic light-emitting element, wherein the common signal line comprises a first common portion in the bending area and a second common portion outside the bending area, the first common portion of the common signal line and the second common portion of the common signal line are in different film layers; and wherein no overlapping area is formed between an orthographic projection of the first common portion of the common signal line on the flexible substrate and an orthographic projection of the first touch portion of the touch signal line on the flexible substrate, and an overlapping area is formed between an orthographic projection of the second common portion of the common signal line on the flexible substrate and an orthographic projection of the second touch portion of the touch signal line on the flexible substrate.

10 . The flexible display panel according to claim 9 , wherein each of the plurality of the pixel areas is further provided with a pixel circuit, and the signal line further comprises:
a driving signal line, on one side of the common signal line distal to the second fanout area, the driving signal line being configured to be electrically connected with the pixel circuit, wherein the driving signal line comprises a first driving portion in the bending area and a second driving portion outside the bending area, and the first driving portion of the driving signal line and the second driving portion of the driving signal line are in different film layers.

11 . The flexible display panel according to claim 2 , further comprising:
a first gate electrode layer, on the flexible substrate; a first gate insulation layer, on one side of the first gate electrode layer distal to the flexible substrate; and a second gate electrode layer, on one side of the first gate insulation layer distal to the flexible substrate, wherein the first groove is on one side of the second gate electrode layer distal to the flexible substrate.

12 . The flexible display panel according to claim 11 , wherein the organic insulation layer comprises:
a first planarization layer, one side of the seco

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Tong Kemeng
• Dong Xiangdan
• He Fan

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K2102/311

  Flexible OLED · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K77/111 Primary

  Flexible substrates · CPC title