Display device including input sensing layer and electronic device including the same

Patent metadata

Field	Value
Publication number	US-12535917-B2
Application number	US-202418902905-A
Country	US
Kind code	B2
Filing date	Sep 30, 2024
Priority date	Dec 10, 2018
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

Provided is a display device including a display panel having a plurality of pixel regions, and an input sensing layer on the display panel, wherein the input sensing layer includes: first sensing electrodes spaced from each other; second sensing electrodes spaced from each other, a first insulating layer on the display panel, having a first refractive index, and having a plurality of first openings defined in regions which overlap the plurality of pixel regions, a second insulating layer directly on the first insulating layer and having a plurality of second openings defined in regions which correspond to the plurality of first openings, and a third insulating layer covering the display panel, the first insulating layer, and the second insulating layer and having a second refractive index higher than the first refractive index, wherein the third insulating layer may overlap the plurality of pixel regions on a plane.

First claim

What is claimed is:

1 . A display device comprising:
a display panel comprising a plurality of pixel regions; and an input sensing layer on the display panel, wherein the input sensing layer comprises:
first sensing electrodes spaced from each other along a first direction;
second sensing electrodes spaced from each other along a second direction crossing the first direction, and crossing the first sensing electrodes;
a first insulating layer on the display panel, the first insulating layer having a first refractive index, and including a plurality of first openings overlapping the plurality of pixel regions;
a second insulating layer directly on the first insulating layer and comprising a plurality of second openings corresponding to the plurality of first openings; and
a third insulating layer covering the display panel, the first insulating layer, and the second insulating layer, the third insulating layer having a second refractive index higher than the first refractive index, wherein the third insulating layer overlaps the plurality of pixel regions on a plane,
wherein the plurality of first openings are defined by removing portions of the first insulating layer, respectively, wherein the plurality of second openings are defined by removing portions of the second insulating layer, respectively, and wherein a thickness of the first insulating layer is greater than a thickness of the second insulating layer.

2 . The display device of claim 1 , wherein the input sensing layer further comprises:
a first conductive layer on the display panel; and a second conductive layer on the first conductive layer.

3 . The display device of claim 2 , wherein the input sensing layer further comprises an interlayer insulating layer between the first conductive layer and the second conductive layer,
wherein the first insulating layer is on the second conductive layer.

4 . The display device of claim 2 , wherein the first insulating layer and the second insulating layer are between the first conductive layer and the second conductive layer.

5 . The display device of claim 4 ,
wherein the first conductive layer comprises a connection portion of the first sensing electrodes, wherein the second conductive layer comprises sensor portions of the first sensing electrodes, wherein touch contact holes are defined in the first and second insulating layers, and wherein the connection portion is electrically connected to the sensor portions through the touch contact holes.

6 . The display device of claim 5 , wherein each of the sensor portions has a mesh shape, and the sensor portions do not overlap the plurality of pixel regions.

7 . The display device of claim 4 , wherein the third insulating layer is on the second conductive layer and covers the second conductive layer.

8 . The display device of claim 1 , wherein the first insulating layer comprises a first organic material, the second insulating layer comprises an inorganic material, and the third insulating layer comprises a second organic material.

9 . The display device of claim 1 , wherein each of the plurality of first openings and the plurality of second openings is filled with the third insulating layer.

10 . The display device of claim 1 , wherein the first insulating layer further comprises a plurality of first auxiliary openings and each of the plurality of first auxiliary openings surrounds a corresponding first opening among the plurality of first openings.

11 . The display device of claim 10 , wherein the second insulating layer further comprises a plurality of second auxiliary openings, and the plurality of second auxiliary openings correspond to the plurality of first auxiliary openings.

12 . The display device of claim 1 , wherein the first refractive index is about 1.45 to about 1.55, and the second refractive index is about 1.60 to about 1.70.

13 . The display device of claim 1 , wherein the second insulating layer comprises an inorganic material.

14 . The display device of claim 13 , wherein the inorganic material is silicon nitride.

15 . The display device of claim 1 , wherein the input sensing layer is a capacitive touch sensor that senses an external input in a mutual capacitance method.

16 . An electronic device comprising a display device comprising:
a display panel comprising a plurality of pixel regions; and an input sensing layer on the display panel and configured to detect an external input in a mutual capacitance method, wherein the input sensing layer comprises:
a first insulating layer on the display panel, the first insulating layer having a first refractive index, and including a plurality of first openings overlapping the plurality of pixel regions;
a second insulating layer directly on the first insulating layer and comprising a plurality of second openings corresponding to the plurality of first openings; and
a third insulating layer covering the display panel, the first insulating layer, and the second insulating layer, the third insulating layer having a second refractive index higher than the first refractive index, wherein the third insulating layer overlaps the plurality of pixel regions on a plane,
wherein the plurality of first openings are defined by removing portions of the first insulating layer, respectively, wherein the plurality of second openings are defined by removing portions of the second insulating layer, respectively, wherein the second insulating layer comprises silicon nitride, and wherein a thickness of the first insulating layer is greater than a thickness of the second insulating layer.

17 . The electronic device of claim 16 , wherein the input sensing layer further comprises:
first sensing electrodes spaced from each other along a first direction; and second sensing electrodes spaced from each other along a second direction crossing the first direction, and crossing the first sensing electrodes.

18 . The electronic device of claim 17 , wherein each of the first sensing electrodes comprises a connection portion and sensor portions electrically connected to the connection portion,
wherein the first insulating layer and the second insulating layer are located between the connection portion and the sensor portions, and wherein touch contact holes are defined in the first and second insulating layers, and wherein the connection portion is electrically connected to the sensor portions through the touch contact holes.

19 . The electronic device of claim 17 , wherein the first sensing electrodes and the second sensing electrodes are located between the display panel and the first insulating layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Son Jungha
• Kim Gee-Bum
• Kim Sangwoo
• Lee Kijune
• Ahn Taekyung
• Yoo Byung Han
• Lim Jaeik
• Choi Chaungi

Classifications

• H10K59/1201

  Manufacture or treatment · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F2203/04103

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

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title