# US 2014/0152174 A1 · Electroluminescent display panel

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0152174 A1
- Document ID: US20140152174A1
- Status: Published application
- Kind: A1
- Application number: 14/086,984
- Filed: 2013-11-22
- Published: 2014-06-05
- Earliest claimed: 2012-12-03
- Assignees: Au Optronics Corporation
- Applicants: AU Optronics Corp.
- Inventors: Chun-Jan Wang; Chuan-Hsiu Chang; Chih-Jen Yang
- Web page: https://patentgrep.com/patent/US20140152174A1

## CPC

- H10K 59/873: {Encapsulations}
- H10K 59/8731: {multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

An electroluminescent (EL) display panel includes a substrate, an EL display array, at least one first thin film encapsulation (TFE) layer and a first patterned stress releasing layer. The EL display array is disposed on the substrate. The first TFE layer covers the EL display array. The first patterned stress releasing layer covers the first TFE layer.

## Claims

### Claim 1

An electroluminescent display panel, comprising:
a substrate;
an electroluminescent display array, disposed on the substrate;
at least one first thin film encapsulation layer, covering the electroluminescent display array; and
a first patterned stress releasing layer, covering the at least one first thin film encapsulation layer, and the first patterned stress releasing layer having a predetermined pattern.

### Claim 2 (depends on 1)

The electroluminescent display panel according to claim 1, wherein the first patterned stress releasing layer comprises a mesh stress releasing layer, and the first patterned stress releasing layer has a plurality of first enclosed openings partially exposing the at least one first thin film encapsulation layer.

### Claim 3 (depends on 2)

The electroluminescent display panel according to claim 2, wherein the first enclosed openings of the first patterned stress releasing layer are arranged periodically.

### Claim 4 (depends on 2)

The electroluminescent display panel according to claim 2, wherein the first enclosed openings of the first patterned stress releasing layer are arranged non-periodically.

### Claim 5 (depends on 1)

The electroluminescent display panel according to claim 1, wherein the at least one first thin film encapsulation layer further covers sidewalls of the electroluminescent display array, and the first patterned stress releasing layer further covers sidewalls of the at least one first thin film encapsulation layer.

### Claim 6 (depends on 1)

The electroluminescent display panel according to claim 1, further comprising at least one second thin film encapsulation layer covering the first patterned stress releasing layer.

### Claim 7 (depends on 6)

The electroluminescent display panel according to claim 6, wherein the at least one second thin film encapsulation layer comprises at least one of an inorganic thin film encapsulation layer, an organic thin film encapsulation layer and an inorganic/organic hybrid thin film encapsulation layer.

### Claim 8 (depends on 7)

The electroluminescent display panel according to claim 7, further comprising a second patterned stress releasing layer covering the at least one second thin film encapsulation layer, and the second patterned stress releasing layer having another predetermined pattern.

### Claim 9 (depends on 8)

The electroluminescent display panel according to claim 8, wherein the first patterned stress releasing layer comprises a plurality of first stripe structures arranged along a first direction, a first opening is formed between any two adjacent first stripe structures for partially exposing the at least one first thin film encapsulation layer, the second patterned stress releasing layer comprises a plurality of second stripe structures arranged along a second direction, a second opening is formed between any two adjacent second stripe structures for partially exposing the at least one second thin film encapsulation layer.

### Claim 10 (depends on 9)

The electroluminescent display panel according to claim 9, wherein the first direction is substantially perpendicular to the second direction.

### Claim 11 (depends on 9)

The electroluminescent display panel according to claim 9, wherein the first direction is substantially parallel to the second direction, the first stripe structures and the second stripe structures are alternately arranged in a vertical projection direction, the first stripe structures substantially correspond to the second openings, and the second stripe structures substantially correspond to the first openings.

### Claim 12 (depends on 1)

The electroluminescent display panel according to claim 1, wherein the substrate comprises a flexible substrate.