Organic electroluminescent device having touch panel and method for fabricating the same

Patent metadata

Field	Value
Publication number	US-9965069-B2
Application number	US-201414540767-A
Country	US
Kind code	B2
Filing date	Nov 13, 2014
Priority date	Dec 6, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

Provided is an organic electroluminescent device (OLED) having a display area and a non-display area outside the display area that may include an OLED panel including a plurality of organic light-emitting diodes in a cell end line of the display area on an array substrate; and a touch panel on the OLED panel, the touch panel including a plurality of touch contact holes in the non-display area, wherein at least two of the plurality of touch contact holes that are immediately adjacent to the cell end line have substantially the same distance from the cell end line, and method for fabricating the same.

First claim

What is claimed is:

1. An organic electroluminescent device (OLED) having a display area and a non-display area outside the display area, the device comprising:
an OLED panel including a plurality of organic light-emitting diodes in a cell end line of the display area on an array substrate; and
a touch panel on the OLED panel, the touch panel including a plurality of touch contact holes in the non-display area,
wherein at least two of the plurality of touch contact holes that are immediately adjacent to each other and the cell end line have substantially the same distance from the cell end line, and
wherein the touch panel further comprises a touch substrate, and the plurality of touch contact holes pass through the touch substrate.

2. The device of claim 1 , wherein the OLED panel and the touch panel are adhered to each other using an adhesive that reduces moisture permeation.

3. The device of claim 1 , the touch panel further comprising a plurality of upper touch electrodes and a plurality of lower touch electrodes that are respectively provided on upper and lower surfaces of the touch substrate.

4. The device of claim 3 , the touch panel further comprising a lower touch electrode connection pattern on the upper surface of the touch substrate, and wherein the lower touch electrode connection pattern is electrically connected to one of the plurality of lower touch electrodes through one of the plurality of touch contact holes.

5. The device of claim 4 , the touch panel further comprising an electrode-connecting plug that passes through the one of the plurality of touch contact holes.

6. The device of claim 4 , wherein the lower touch electrode connection pattern is formed around the one of the plurality of touch contact holes.

7. The device of claim 4 , wherein the electrode-connecting plug is formed by an electroplating method.

8. The device of claim 1 , wherein the cell end line of the display area has a rectangular or circular shape.

9. The device of claim 1 , wherein the at least two of the plurality of touch contact holes are located so as to follow a contour of a corresponding portion of the cell end line.

10. A method of fabricating an organic electroluminescent device (OLED) having a display area and a non-display area outside the display area, the method comprising:
forming an OLED panel including a plurality of organic light-emitting diodes on an array substrate;
forming a plurality of touch contact holes passing through a touch substrate in the non-display area, the plurality of touch contact holes located at substantially the same distance from a cell end line of the display area;
forming an upper touch electrode and a lower electrode at upper and lower surfaces of the touch substrate, respectively;
forming a lower touch electrode connection pattern electrically connected to a lower touch electrode of the touch panel through one of the plurality of touch contact holes; and
adhering the OLED panel to the touch substrate using an adhesive.

11. The method of claim 10 , wherein the lower touch electrode connection pattern is formed on the upper surface of the touch substrate around the one of the plurality of touch contact holes.

12. The method of claim 10 , wherein the cell end line of the display area has a linear, rectangular or circular shape.

13. The method of claim 10 , wherein an upper touch electrode and a lower touch electrode formed at an upper and a lower portion of the touch substrate of the touch panel constitutes a touch sensor.

14. The method of claim 10 , further comprising forming an electrode-connecting plug that passes through the one of the plurality of touch contact holes.

15. The method of claim 14 , wherein the electrode-connecting plug is formed by an electroplating method.

Assignees

• Lg Display Co Ltd

Inventors

• Song Eunah
• Lim Heechul
• Byun Hyuntae

Classifications

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• G09G5/00

  Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators (image data processing or generation, in general G06T) · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title