Flexible organic light emitting diode display device

Patent metadata

Field	Value
Publication number	US-9535522-B2
Application number	US-201414579581-A
Country	US
Kind code	B2
Filing date	Dec 22, 2014
Priority date	Dec 22, 2014
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

There is provided a flexible display having a plurality of innovations configured to allow bending of a portion or portions to reduce apparent border size and/or utilize the side surface of an assembled flexible display.

First claim

What is claimed is:

1. A flexible display apparatus, comprising:
a flexible base layer defined with a first area, a second area and a bend allowance section between the first area and the second area of the flexible base layer;
a plurality of display pixels in the first area of the flexible base layer; and
at least one driver integrated circuit (D-IC) placed in the second area of the flexible base layer,
wherein the first area and the second area are substantially flat, and an entirety of the bend allowance section is bent.

2. The flexible display apparatus of claim 1 , further comprising a gate driver circuitry in the first area.

3. The flexible display apparatus of claim 1 , wherein the D-IC placed in the second area of the flexible base layer includes a display driver integrated circuit.

4. The flexible display apparatus of claim 1 , wherein the D-IC placed in the second area of the flexible base layer includes a touch sensor driver integrated circuit.

5. The flexible display apparatus of claim 1 , further comprising a plurality of conductive lines in the bend allowance section of the flexible base layer, the plurality of conductive lines in the bend allowance section being routed from the D-IC in the second area to one or more conductive lines placed in the first area of the flexible base layer.

6. The flexible display apparatus of claim 1 , further comprising a printed circuit board coupled to a connection interface provided in the second area of the flexible base layer, wherein a polymer layer of the flexible printed circuit board is different from the base layer.

7. The flexible display apparatus of claim 1 , further comprising a power supply unit placed on the printed circuit board.

8. The flexible display apparatus of claim 1 , wherein the first area and the second area have a less curvature than that of the bend allowance section.

9. The flexible display apparatus of claim 1 , wherein the bend allowance section of the flexible base layer is bent such that the second area of the flexible base layer is arranged to overlap at least some part of the first area of the flexible base layer.

10. The flexible display apparatus of claim 1 , wherein the first area of the flexible base layer is provided in a rounded shape.

11. The flexible display apparatus of claim 1 , wherein a notch is provided in the bend allowance section of the flexible base layer.

12. The flexible display apparatus of claim 1 , wherein a width of flexible base layer in the bend allowance section is shorter than width of the flexible base layer in the first area and the second area.

13. The flexible display apparatus of claim 1 , wherein the bend allowance section of the flexible base layer is thinner than the first and second areas of the flexible base layer.

14. The flexible display apparatus of claim 1 , wherein the plurality of display pixels in the first area is disposed on a first side of the flexible base layer and the D-IC in the second area is disposed on a second side of the flexible base layer.

15. The flexible display apparatus of claim 1 , wherein at least one of the conductive lines in the bend allowance section includes a chain of links, in which each of the links has a segment that is arranged non-parallel to the tangent vector of a curvature of the flexible base layer in the bend allowance section.

16. The flexible display apparatus of claim 1 , wherein at least one of the conductive lines in the bend allowance section includes a grid of links, in which each of the links has a segment that is arranged non-parallel to the tangent vector of a curvature of the flexible base layer in the bend allowance section.

17. The flexible display apparatus of claim 1 , further comprising one or more insulation layers that are patterned according to a trace design of the plurality of conductive lines.

18. The flexible display apparatus of claim 1 , further comprising a support layer having a rounded edge portion, wherein the support layer is arranged on the second side of the flexible base layer such that the bend allowance section of the flexible base layer wraps around the rounded edge portion of the support layer.

19. The flexible display apparatus of claim 1 , further comprising a first support layer and a second support layer on the first side of the flexible base layer, the first support layer being provided in the first area and the second support layer being provided in the second area of the flexible base layer.

20. The flexible display apparatus of claim 19 , further comprising a support member having an elongated body portion and a rounded end portion, wherein the support member is arranged such that the bend allowance section of the flexible base layer wraps around the rounded end portion of the support member.

Assignees

• Lg Display Co Ltd

Inventors

• Ahn Dongseok

Classifications

• Y02E10/549

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