Display device

Patent metadata

Field	Value
Publication number	US-10763313-B2
Application number	US-201815977972-A
Country	US
Kind code	B2
Filing date	May 11, 2018
Priority date	May 12, 2017
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

Disclosed is a display device which may achieve process simplification and cost reduction. In the display device having touch sensors, the touch sensors are arranged on an encapsulation unit arranged to cover light emitting elements, and an anti-reflective film including a photosensitive material and a black pigment is arranged on routing lines connected to the touch sensors and a conductive layer arranged as an uppermost layer among a plurality of conductive layers included in the touch sensors. Thereby, visibility of external light may be improved by the anti-reflective film, and the touch electrodes are arranged on an encapsulation unit without a separate attachment process and, thus, process simplification and cost reduction of the display device may be achieved.

First claim

The invention claimed is:

1. A display device, comprising:
light emitting elements arranged on a substrate;
an encapsulation unit arranged on the light emitting elements, wherein the encapsulation unit comprises a plurality of inorganic encapsulation layers and at least one organic encapsulation layer;
a plurality of touch sensors arranged on the encapsulation unit, the touch sensors including a plurality of conductive layers;
routing lines respectively connected to the touch sensors and disposed along a lateral surface of an inorganic encapsulation layer of the plurality of inorganic encapsulation layers that covers a lateral surface of the organic encapsulation layer; and
an anti-reflective film arranged on the routing lines and on an uppermost layer among the plurality of conductive layers included in the touch sensors, the anti-reflective film including a photosensitive material and a black pigment.

2. A display device, comprising:
light emitting elements arranged on a substrate;
an encapsulation unit arranged on the light emitting elements;
a plurality of touch sensors arranged on the encapsulation unit, the touch sensors including a plurality of conductive layers;
routing lines respectively connected to the touch sensors and disposed along a lateral surface of the encapsulation unit; and
an anti-reflective film arranged on the routing lines and on an uppermost layer among the plurality of conductive layers included in the touch sensors, the anti-reflective film including a photosensitive material and a black pigment,
wherein the touch sensors comprise touch sensing lines and touch driving lines arranged on the encapsulation unit,
wherein each of the touch driving lines comprises:
first touch electrodes arranged in a first direction on the encapsulation unit; and
first bridges configured to connect the first touch electrodes,
wherein each of the touch sensing lines comprises:
second touch electrodes arranged in a second direction intersecting the first direction; and
second bridges configured to connect the second touch electrodes.

3. The display device according to claim 2 , wherein the anti-reflective film is arranged on the second bridges and the routing lines, the anti-reflective film having a same line width as the second bridges and the routing lines.

4. The display device according to claim 2 , wherein the anti-reflective film is arranged on the second bridges and the routing lines, the anti-reflective film having a greater line width than the second bridges and the routing lines.

5. The display device according to claim 2 , wherein the anti-reflective film is arranged on the second bridges and the routing lines, and the anti-reflective film covers side and upper surfaces of the second bridges and the routing lines.

6. The display device according to claim 2 , wherein each of the second bridges and the routing lines has a monolayer or multilayer structure including at least one of Ti, Ta, Cr, Mo, MoTi, Al, Ag, Au and Co.

7. The display device according to claim 2 , wherein each of the second bridges and the routing lines has a multilayer structure of Ti/Al/Ti.

8. The display device according to claim 2 , wherein at least one of the first bridges and the second bridges includes at least one slit.

9. The display device according to claim 1 , further comprising color filters arranged between the encapsulation unit and the touch sensors.

10. The display device according to claim 1 , further comprising color filters arranged on the touch sensors,
wherein the touch sensors are arranged between the color filters and the encapsulation unit.

11. A display device comprising:
light emitting elements arranged on a substrate;
an encapsulation unit arranged on the light emitting elements;
a plurality of touch sensors arranged on the encapsulation unit, the touch sensors including a plurality of conductive layers;
routing lines respectively connected to the touch sensors;
an anti-reflective film arranged on the routing lines and on an uppermost layer among the plurality of conductive layers included in the touch sensors, the anti-reflective film including a black pigment;
at least one insulating film arranged between the substrate and the encapsulation unit;
a plurality of touch pads connected to the routing lines;
thin film transistors connected to the light emitting elements; and
display pads connected to the thin film transistors and arranged on the substrate,
wherein the display pads and the touch pads contact the at least one insulating film.

12. The display device according to claim 11 , further comprising:
a buffer layer arranged between an active layer of the thin film transistors and the substrate;
an interlayer insulating film arranged between gate electrodes and source and drain electrodes of the thin film transistors; and
a protective film arranged between the source and drain electrodes and the light emitting elements,
wherein the at least one insulating film includes at least one of the buffer layer, the interlayer insulating film and the protective film.

13. The display device according to claim 2 , wherein the second bridges include the uppermost layer of the touch sensors.

Assignees

• Lg Display Co Ltd

Inventors

• Beak Jung-Sun
• Lee Seong-Joo

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/40 Primary

  OLEDs integrated with touch screens · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title