Display device and manufacturing method of the same

Patent metadata

Field	Value
Publication number	US-2025275412-A1
Application number	US-202418944535-A
Country	US
Kind code	A1
Filing date	Nov 12, 2024
Priority date	Feb 26, 2024
Publication date	Aug 28, 2025
Grant date	—

Abstract

A display device includes a display panel including a plurality of emission areas. An input sensor is on the display panel. The input sensor includes a first sensor insulation layer on the display panel. A first sensor conductive layer is disposed on the first sensor insulation layer. The first sensor conductive layer includes a plurality of first conductive patterns. An organic pattern directly contacts side surfaces of each of the plurality of first conductive patterns. The organic pattern includes an organic binder. The organic pattern includes concave slope surfaces having a decreasing gradient from a top of the organic pattern to a bottom of the organic pattern in a thickness direction of the display device.

First claim

What is claimed is:

1 . A display device comprising:
a display panel comprising a plurality of emission areas; and an input sensor on the display panel, wherein the input sensor comprises:
a first sensor insulation layer on the display panel;
a first sensor conductive layer disposed on the first sensor insulation layer, the first sensor conductive layer comprising a plurality of first conductive patterns; and
an organic pattern directly contacting side surfaces of each of the plurality of first conductive patterns, the organic pattern comprising an organic binder,
wherein the organic pattern comprises concave slope surfaces having a decreasing gradient from a top of the organic pattern to a bottom of the organic pattern in a thickness direction of the display device.

2 . The display device of claim 1 , wherein the organic binder comprises at least one compound selected from polyimide, polyamide, polybenzimidazole, polybenzothiazole, polybenzoxazole, polybenzobisxazole, and polyamide-imide.

3 . The display device of claim 1 , wherein the organic pattern is optically transparent in a visible ray wavelength region.

4 . The display device of claim 1 , further comprising:
an optical layer disposed on the input sensor, the optical layer comprising a color filter overlapping each of the plurality of emission areas in a plan view.

5 . The display device of claim 4 , wherein the optical layer further comprises a light-blocking pattern overlapping each of the plurality of first conductive patterns in the plan view.

6 . The display device of claim 1 , wherein a taper angle of the side surfaces of each of the plurality of first conductive patterns is in a range of about 60 degrees to about 80 degrees.

7 . The display device of claim 1 , wherein a taper angle at intermediate points on the concave slope surfaces of the organic pattern is in a range of about 40 degrees to about 60 degrees.

8 . The display device of claim 1 , wherein:
each of the plurality of first conductive patterns comprises a first side surface and a second side surface facing the first side surface; and the organic pattern comprises a first organic pattern directly contacting the first side surface, and a second organic pattern directly contacting the second side surface.

9 . The display device of claim 1 , wherein each of the plurality of first conductive patterns comprises:
a first lower conductive layer on the first sensor insulation layer; and a second lower conductive layer disposed on the first lower conductive layer, the second lower conductive layer comprising a material that is different from a material of the first lower conductive layer.

10 . The display device of claim 1 , wherein the input sensor further comprises:
a second sensor insulation layer on the first sensor conductive layer; and a second sensor conductive layer disposed on the second sensor insulation layer, the second sensor conductive layer comprising a plurality of second conductive patterns.

11 . The display device of claim 10 , wherein the input sensor further comprises an additional organic pattern directly contacting side surfaces of each of the plurality of second conductive patterns, the additional organic pattern comprising the organic binder.

12 . The display device of claim 1 , wherein a thickness of each of the plurality of first conductive patterns is in a range of about 500 nm to about 1200 nm.

13 . The display device of claim 1 , wherein the display panel comprises:
a pixel definition layer having emission openings defined therein that respectively overlap the plurality of emission areas in a plan view; and light-emitting elements comprising a light-emitting layer disposed at least within the emission openings.

14 . The display device of claim 13 , wherein the display panel further comprises an encapsulation layer on the light-emitting elements and the pixel definition layer,
wherein the input sensor is disposed directly on the encapsulation layer.

15 . The display device of claim 1 , wherein the input sensor further comprises:
a first detection electrode comprising a plurality of first detection patterns arranged along a first direction and a plurality of bridge patterns connecting adjacent two first detection patterns of the plurality of first detection patterns to each other; and a second detection electrode spaced apart from the first detection electrode, the second detection electrode comprising a plurality of second detection patterns extending along a second direction crossing the first direction, wherein portions of the plurality of first detection patterns, the plurality of second detection patterns, and the plurality of bridge patterns comprise the plurality of first conductive patterns.

16 . A display device comprising:
a display panel comprising a plurality of emission areas; and an input sensor on the display panel, wherein the input sensor comprises:
a first sensor insulation layer on the display panel;
a first sensor conductive layer disposed on the first sensor insulation layer, the first sensor conductive layer comprising a plurality of first conductive patterns; and
an organic pattern directly contacting side surfaces of each of the plurality of first conductive patterns, the organic pattern comprising an organic binder,
wherein the organic binder comprises at least one compound selected from polyimide, polyamide, polybenzimidazole, polybenzothiazole, polybenzoxazole, polybenzobisxazole, and polyamide-imide.

17 . The display device of claim 16 , wherein:
the organic binder comprises the polyimide; and the organic binder further comprises a fluorinated material selected from polybenzimidazole, polybenzothiazole, polybenzoxazole, polybenzobisxazole, and polyamide-imide.

18 . A display device manufacturing method comprising:
providing a display panel comprising a plurality of emission areas; and providing an input sensor on the display panel, wherein the providing of the display panel comprises:
providing a first sensor insulation layer on the display panel;
providing a first sensor conductive layer on the first sensor insulation layer, the first sensor conductive layer comprising a plurality of first conductive patterns; and
supplying an organic composition to directly contact side surfaces of each of the plurality of first conductive patterns to provide an organic pattern,
wherein the organic pattern comprises concave slope surfaces having a decreasing gradient from a top of the organic pattern to a bottom of the organic pattern in a thickness direction of the display panel.

19 . The display device manufacturing method of claim 18 , wherein:
the organic composition comprises solid powder and a solvent having the solid powder dispersed therein, wherein a solid content in the organic composition is less than or equal to about 5 wt %.

20 . The display device manufacturing method of claim 18 , wherein:
the organic composition initially forms a preliminary organic pattern on the side surfaces of each of the plurality of first conductive patterns; the preliminary organic pattern is cured to provide the organic pattern; and the organic pattern comprises at least one compound selected from polyimide, polyamide, polybenzimidazole, polybenzothiazole, polybenzoxazole, polybenzobisxazole, and polyamide-imide.

Assignees

• Samsung Display Co Ltd

Inventors

• Jang Hokyung
• Sugitani Koichi
• Park Gwui-Hyun
• Han Saehee

Classifications

• H10K59/8792

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

• H10K59/40 Primary

  OLEDs integrated with touch screens · CPC title

• G06F3/0448

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title

• G06F2203/04103

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

• G06F3/0443

  using a single layer of sensing electrodes · CPC title