Input detection unit and display device including the same

Patent metadata

Field	Value
Publication number	US-11099697-B2
Application number	US-201916418622-A
Country	US
Kind code	B2
Filing date	May 21, 2019
Priority date	Jul 6, 2018
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

Provided is an input detection unit with a plurality of first electrodes and second electrodes insulated from the first electrodes. Dummy patterns are disposed between the patterns and the detection patterns. A secondary dummy pattern is disposed adjacent to the dummy patterns. Signal lines overlap the non-detection area. The signal lines include a first signal line connected to the patterns and a second signal line connected to the detection patterns. The plurality of patterns includes a row of patterns closest to the non-detection area. The secondary dummy pattern overlaps a portion between the row of patterns closest to the non-detection area and the second signal line.

First claim

What is claimed is:

1. An input detection unit comprising:
a substrate including a detection area and a non-detection area adjacent to the detection area;
a plurality of first electrodes overlapping the detection area which extend in a first direction and are arranged successively in a second direction that intersects the first direction, wherein each of the first electrodes includes a plurality of first connection patterns and a plurality of first detection patterns connected through the first connection patterns;
a plurality of second electrodes overlapping the detection area, which are insulated from the first electrodes, extend in the second direction and are arranged successively along the first direction, wherein each of the second electrodes includes a plurality of second connection patterns and a plurality of second detection patterns connected through the second connection patterns;
dummy patterns overlapping the detection area and disposed between the first detection patterns and the second detection patterns in the detection area, the dummy patterns being either grounded or floated;
a secondary dummy pattern disposed adjacent to the dummy patterns, the secondary dummy pattern being either grounded or floated; and
signal lines overlapping the non-detection area,
wherein the signal lines include a first signal line connected to the first detection patterns and a second signal line connected to the second detection patterns,
wherein the plurality of first detection patterns includes a row of first detection patterns closest to the non-detection area, and
wherein the secondary dummy pattern overlaps a portion between the row of first detection patterns closest to the non-detection area and the second signal line, and
wherein the secondary dummy pattern is closer to the second signal line than the row of first detection patterns.

2. The input detection unit of claim 1 , wherein the signal lines further comprise a first dummy line disposed between the first signal line and the second signal line, the first dummy line being either grounded or floated.

3. The input detection unit of claim 2 , wherein the row of first detection patterns closest to the non-detection area includes two outermost first detection patterns, and wherein the second signal line is spaced apart from a first outermost first detection pattern, on a plane, with the secondary dummy pattern and the first dummy line disposed there between.

4. The input detection unit of claim 2 , wherein the first detection patterns, the second detection patterns, the second connection patterns, the dummy patterns, and the secondary dummy pattern are disposed on a same layer.

5. The input detection unit of claim 4 , wherein the first connection patterns and the signal lines are disposed on the same layer and the signal lines are disposed on a different layer from the first detection patterns.

6. The input detection unit of claim 1 , wherein an outermost second detection pattern among the second detection patterns is connected to a first end of the second signal line and is provided as a partial shape of remaining second detection patterns of the same column.

7. The input detection unit of claim 6 , wherein the outermost second detection pattern is adjacent to a first outermost first detection pattern, wherein the outermost second detection pattern has a larger area than the first outermost first detection pattern.

8. The input detection unit of claim 6 , further comprising a light blocking pattern disposed on a different layer from the patterns and overlapping the first detection patterns and a portion of the second detection pattern.

9. The input detection unit of claim 1 , wherein an area of a first outermost first detection pattern is larger than the area of the secondary dummy pattern, and a sum of the area of the first outermost first detection pattern and the area of the secondary dummy pattern is smaller than the area of each of the remaining first detection patterns of a same row.

10. The input detection unit of claim 1 , wherein the signal lines further comprise a plurality of third signal lines connected to the first detection patterns, and first ends of the third signal lines are respectively connected to the first detection patterns of a row farthest from first detection patterns of a row closest to a non-detection area row in the first direction.

11. The input detection unit of claim 10 , wherein the signal lines further comprise a second dummy line disposed between the first signal line and a third signal line, the second dummy line being either grounded or floated.

12. The input detection unit of claim 2 , wherein the first dummy line comprises a first portion overlapping the non-detection area and disposed between the first signal line and the second signal line, and a second portion extending from the first portion and overlapping the detection area.

13. The input detection unit of claim 12 , wherein the first detection patterns, the second detection patterns, the second connection patterns, and the dummy patterns are disposed on a same layer as one another, wherein the first connection patterns, the first signal line, the second signal line, and the first dummy line are disposed on a same layer as one another, and wherein the first detection patterns and the first dummy line are disposed on different layers from each other.

14. The input detection unit of claim 12 , wherein the dummy line is provided with a ground voltage.

15. A display device comprising:
a display substrate including a display area and a non-display area adjacent to the display area;
an encapsulation member disposed on the display substrate and including a detection area and a non-detection area adjacent to the detection area;
a first conductive layer including a plurality of first connection patterns disposed on the encapsulation member and overlapping the detection area, and a plurality of signal lines overlapping the non-detection area;
an insulating layer disposed on the first conductive layer; and
a second conductive layer disposed on the insulating layer and overlapping the detection area and including a plurality of first detection patterns connected through the first connection patterns, a plurality of second connection patterns, a plurality of second detection patterns connected through the second connection patterns, din my patterns disposed in the detection area between the first detection patterns and the second detection patterns, and a secondary dummy pattern disposed adjacent to the dummy patterns,
wherein the dummy patterns and the secondary dummy pattern are either grounded or floated,
wherein the signal lines comprise a plurality of first signal lines connected to the first detection patterns and a plurality of second signal lines connected to the second detection patterns, two outermost first detection patterns among first detection patterns of a same row are closest to first ends of the first signal lines and provided as partial shapes of remaining first detection patterns of a same row, and the secondary dummy pattern overlaps an area between the two outermost first detection patterns and a second signal line adjacent to the two outermost first detection patterns, and
wherein the secondary dummy pattern is closer to the second signal line than the two outermost first detection patterns.

16. The display device of claim 15 , wherein the two outermost first detection patterns among the first detection patterns of a same column connect to first ends of the plurality of second signal lines, and are provided as partial shapes of remaini

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jong-Hwa
• Kim Il-Joo
• Kim Duckjoong
• Lee Kyungsu

Classifications

• G06F3/04164

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G06F3/0418

  for error correction or compensation, e.g. based on parallax, calibration or alignment · CPC title

• G09F9/30

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title

• G06F2203/04103

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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title