Narrow bezel display apparatus using a folded substrate

Patent metadata

Field	Value
Publication number	US-9760125-B2
Application number	US-201414251244-A
Country	US
Kind code	B2
Filing date	Apr 11, 2014
Priority date	Apr 11, 2013
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

The present invention relates to a flexible display panel for suppressing a problem in which a crack such as disconnection on an internal circuit layer or the like is generated or a required warpage level is not attainable in a warped area while bending an edge portion thereof. According to an embodiment of the present invention, the layer structure of a signal line portion for electrically connecting elements provided within a display area and a non-active area may be simplified, and a protective member may be formed thereon, thereby obtaining the effect of minimizing the damage of the layer structure due to bending.

First claim

What is claimed is:

1. A narrow bezel display apparatus using a folded substrate, comprising:
an active area provided with a plurality of pixels having a multi-layer structure, wherein the multi-layer structure includes an interlayer insulating layer and a planarization layer;
a non-active area configured to surround the active area, the non-active area including a gate driving circuit having the multi-layer structure and a bending area;
a substrate defined with the bending area formed between the gate driving circuit and the active area, and at least one lateral surface which is warped in a rear surface direction thereof; and
a supporting film adhered to a lower portion of the substrate,
wherein the bending area includes:
an auxiliary line formed with one layer for electrically connecting the gate driving circuit to the pixels, and
a protective layer disposed only in the bending area between the active area and the gate driving circuit, the protective layer being disposed directly on the auxiliary line to protect the auxiliary line from moisture and damage due to a bending of the bending area,
wherein the supporting film is disposed only in an area corresponding to the active area.

2. The narrow bezel display apparatus of claim 1 , wherein at least one of the pixels comprises:
a gate line;
a data line crossed with the gate line; and
a thin film transistor electrically connected to at least one of the gate line and data line.

3. The narrow bezel display apparatus of claim 2 , wherein the auxiliary line is formed of the same metal as that of either one of the gate line and data line.

4. The narrow bezel display apparatus of claim 2 , wherein the auxiliary line is made of copper (Cu) or copper alloy.

5. The narrow bezel display apparatus of claim 1 , wherein the protective layer has the same material as that of the substrate.

6. The narrow bezel display apparatus of claim 1 , wherein the protective layer is formed with the same thickness as that of the substrate.

7. The narrow bezel display apparatus of claim 1 , wherein the supporting film includes a PET film.

8. The narrow bezel display apparatus of claim 1 , wherein each corner end of the substrate is cut such that four side ends thereof are all warped.

9. A narrow bezel display apparatus using a folded substrate, comprising:
a substrate defined with an active area and a non-active area comprising a gate-in-panel (GIP) area and a bending area, the bending area being warped in a rear surface direction thereof;
a supporting film adhered to a lower portion of the substrate;
a driving element layer formed on the active area and GIP area, respectively, to comprise a thin film transistor connected to a gate line and a data line;
an auxiliary line formed on the bending area to be electrically connected to the driving element layer;
a protective layer disposed only in the bending area between the active area and the GIP area, the protective layer being disposed directly on the auxiliary line to protect the auxiliary line from moisture and damage due to a bending of the bending area;
a light-emitting element layer formed to be divided into each pixel on the driving element layer;
a first passivation layer formed on the light-emitting element layer;
an organic layer formed on the first passivation layer; and
a second passivation layer formed on the first passivation layer of the active area, to an upper portion of which a protective film is adhered by an adhesive,
wherein the active area includes a plurality of pixels having a multi-layer structure, and the multi-layer structure includes an interlayer insulating layer, and a planarization layer, and
wherein the supporting film is disposed only in an area corresponding to the active area.

10. The narrow bezel display apparatus of claim 9 , wherein the auxiliary line is formed of the same metal as that of either one of the gate line and data line.

11. The narrow bezel display apparatus of claim 9 , wherein the auxiliary line is made of copper (Cu) or copper alloy.

12. The narrow bezel display apparatus of claim 9 , wherein the protective layer has the same material as that of the substrate.

13. The narrow bezel display apparatus of claim 9 , wherein the protective layer is formed with the same thickness as that of the substrate.

14. The narrow bezel display apparatus of claim 9 , wherein the supporting film includes a PET film.

15. The narrow bezel display apparatus of claim 9 , wherein each corner end of the substrate is cut such that four side ends thereof are all warped.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Jaebok
• Jeon Changhoon

Classifications

• H04M1/0268

  including a flexible display panel · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/121 Primary

  characterised by the geometry or disposition of pixel elements · CPC title