Display device

Patent metadata

Field	Value
Publication number	US-10890997-B2
Application number	US-201916521481-A
Country	US
Kind code	B2
Filing date	Jul 24, 2019
Priority date	Oct 18, 2018
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A display device including a display panel including a light emitting element and an encapsulation layer covering the light emitting element; and an input sensing unit disposed on the display panel. The input sensing unit includes a first conductive pattern disposed on the encapsulation layer, and including a first portion and a second portion extend from the first portion; an insulation layer covering the first conductive pattern; and a second conductive pattern disposed on the insulation layer, and including a third portion overlapping the at least a portion of the first portion of the first conductive pattern and a fourth portion extend from the third portion. A width of the first portion is less than a width of the second portion.

First claim

What is claimed is:

1. A display device comprising:
a display panel comprising a light emitting element and an encapsulation layer covering the light emitting element; and
an input sensing unit disposed on the display panel,
wherein:
the input sensing unit comprises:
a first conductive pattern disposed on the encapsulation layer, the first conductive pattern including a first portion and a second portion extending from the first portion;
an insulation layer covering the first conductive pattern; and
a second conductive pattern disposed on the insulation layer, the second conductive pattern including a third portion overlapping at least a portion of the first portion of the first conductive pattern and a fourth portion extending from the third portion;

a width of the first portion is less than a width of the second portion;
each of the first conductive pattern and the second conductive pattern has a mesh pattern comprising a plurality of mesh lines defining a plurality of mesh holes;
the second conductive pattern comprises:
a first sensing electrode comprising first sensing cells and a first connection part that connects the first sensing cells adjacent to each other, the first sensing electrode extending in a first direction; and
second sensing cells arranged in a second direction crossing the first direction;

the first conductive pattern comprises a second connection part that connects the second sensing cells adjacent to each other to form a second sensing electrode;
the second sensing cells and the second connection part are connected through a contact hole passing through the insulation layer; and
each of the first connection part and the second connection part comprises a plurality of the mesh lines.

2. The display device of claim 1 , wherein a width of the third portion is less than a width of the fourth portion.

3. The display device of claim 1 wherein the second portion does not overlap the second conductive pattern and the fourth portion does not overlap the first conductive pattern.

4. The display device of claim 1 , wherein:
the first portion and the third portion are in regions included in a crossing region where the first conductive pattern and the second conductive pattern cross; and
an area of the first portion of the first conductive pattern included in the crossing region is smaller than an area of the second portion included in a unit region of a same size as the crossing region.

5. The display device of claim 4 , wherein an area of the third portion of the second conductive pattern included in the crossing region is smaller than an area of the fourth portion included in the unit region.

6. The display device of claim 1 , wherein a portion of the second connection part overlaps a portion of the first sensing cells adjacent to the second connection part.

7. The display device of claim 6 , wherein
the first sensing cell overlapping the second connection part of the first sensing cells includes a portion overlapping the second connection part and a portion not overlapping the second connection part.

8. The display device of claim 1 , wherein a width of a portion of the second connection part which overlaps a portion of the second sensing cells is greater than the width of the first portion.

9. The display device of claim 1 , wherein a width of a portion of the second connection part which overlaps a portion of the second sensing cells is substantially equal to the width of the second portion.

10. The display device of claim 1 , wherein a portion of the second connection part overlaps a portion of the first connection part.

11. The display device of claim 1 , wherein
the first connection part includes a portion overlapping a portion of the second connection part and another portion not overlapping the second connection part.

12. The display device of claim 11 , wherein a width of the third portion is less than a width of the fourth portion.

13. A display device comprising:
a display panel comprising a light emitting element and an encapsulation layer covering the light emitting element; and
an input sensing unit disposed on the display panel,
wherein:
the input sensing unit comprises:
a second connection part disposed on the encapsulation layer;
an insulation layer covering the second connection part;
a first sensing electrode disposed on the insulation layer, the first sensing electrode comprising first sensing cells and a first connection part connecting the first sensing cells adjacent to each other, and extending in a first direction; and
a second sensing electrode disposed on a same layer as the first sensing electrode and comprising second sensing cells arranged in a second direction crossing the first direction and not contacting the first sensing electrode;

the second sensing electrode is formed by connecting the second sensing cells adjacent to each other through the second connection part;
a width of a first portion of the second connection part including a portion overlapping the first sensing electrode is less than a width of a second portion extending from the first portion;
each of the first sensing electrode and the second sensing electrode has a mesh pattern comprising a plurality of mesh lines defining a plurality of mesh holes; and
each of the first connection part and the second connection part comprises a plurality of the mesh lines.

14. The display device of claim 13 , wherein the first portion of the second connection part overlaps the first connection part.

15. The display device of claim 14 , wherein:
the first connection part includes a third portion overlapping the first portion of the second connection part and a fourth portion extending from the third portion; and
a width of the third portion is less than a width of the fourth portion.

16. The display device of claim 13 , wherein the first portion of the second connection part overlaps a first sensing cell of the first sensing cells, which are adjacent to the second connection part.

17. The display device of claim 16 , wherein:
the adjacent first sensing cell includes a third portion overlapping the first portion and a fourth portion extending from the third portion; and
a width of the third portion is less than a width of the fourth portion.

18. The display device of claim 13 , wherein a width of a portion of the second connection part which overlaps the second sensing electrode is greater than a width of the first portion of the second connection part overlapping the first sensing electrode.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jeong Woo
• Park Sung Hyun

Classifications

• H10K59/80

  Constructional details · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0445 Primary

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06V40/12

  Fingerprints or palmprints · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title