Flexible display device with divided power lines and manufacturing method for the same

Patent metadata

Field	Value
Publication number	US-9349758-B2
Application number	US-201414503260-A
Country	US
Kind code	B2
Filing date	Sep 30, 2014
Priority date	Sep 30, 2014
Publication date	May 24, 2016
Grant date	May 24, 2016

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 display apparatus, comprising:
a base layer;
an array of pixel circuits and a driving circuit on the base layer; and
a plurality of conductive line traces connected to the array of pixel circuits or a driving circuit, wherein at least one of the plurality of conductive line traces includes a portion having a strain-reducing trace design,
wherein the conductive line trace portion with the strain reducing trace design is located on the base layer corresponding to a bend portion of the display apparatus,
wherein one or more inorganic insulation layers disposed under and/or on the conductive line trace is patterned around the portion of the conductive line trace having the strain reducing trace design, and
wherein the conductive line trace portion having the strain reducing trace design includes an elongated recessed channel between a first grid part and a second grid part, which are in contact with each other.

2. The display apparatus of claim 1 , wherein each of the first grid part and the second grid part has a plurality of diamond-chain conductive line traces that are arranged side-by-side and in contact to each other.

3. The display apparatus of claim 2 , wherein the elongated recessed channel extends in a direction substantially parallel to the bending direction.

4. The display apparatus of claim 3 , wherein the first grid parts and the second grid parts are connected to each other at one or both ends of the conductive line trace.

5. The display apparatus of claim 3 , wherein the conductive line portion having the strain-reducing trace design is on a bend allowance section, and wherein the first grid parts and the second grid parts are in contact to each other at outside the bend allowance section of the display apparatus.

6. The display apparatus of claim 5 , wherein the portion of the conductive line trace with the strain reducing trace design is covered by a micro coating layer.

7. The display apparatus of claim 6 , wherein the first grid part and the second grid part of the conductive line trace portion has the same size.

8. A display apparatus, comprising:
a base layer in a first portion, a second portion and a bend allowance section between the first portion and the second portion of the display apparatus;
a plurality of organic light-emitting diode (OLED) elements on the first portion of the display apparatus;
a power supplying conductive line trace at the bend allowance section of the display apparatus, said conductive line trace having at least two stripes of grids that are spaced apart by an elongated recessed channel; and
a micro-coating layer disposed over the power supplying conductive line trace in the bend allowance section of the display apparatus.

9. The display apparatus of claim 8 , wherein each stripe of grids includes a plurality of diamond-chain shaped traces that are adjoined to each other.

10. The display apparatus of claim 9 , further comprising a plurality of signal supplying conductive line traces at the bend allowance section of the display apparatus, said plurality of signal supplying conductive line traces has a diamond-chain shape.

11. The display apparatus of claim 10 , wherein a size of each diamond shaped trace in the power supplying conductive line is greater than that of the signal supplying conductive line traces.

Assignees

• Lg Display Co Ltd

Inventors

• Ki Yunho
• Choi Siehyug
• Yu Youngmin
• Kim Sungwoo
• Cho Yoondong
• Kwon Seyeoul

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• G09G2380/02

  Flexible displays · CPC title

• G09G2310/0297

  Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns · CPC title

• G09G3/3266

  Details of drivers for scan electrodes · CPC title

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title