Display device including input sensing circuit

Patent metadata

Field	Value
Publication number	US-2020043984-A1
Application number	US-201916439245-A
Country	US
Kind code	A1
Filing date	Jun 12, 2019
Priority date	Aug 6, 2018
Publication date	Feb 6, 2020
Grant date	—

Abstract

A display device includes a display panel including a display region and a non-display region, and an input sensing circuit disposed on the display panel. The input sensing circuit includes a plurality of sensors overlapping the display region and including a plurality of first sensors and a plurality of second sensors capacitive-coupled respectively to adjacent first sensors among the plurality of first sensors, a dummy line disposed on a periphery of the plurality of sensors, extending along a part of a boundary between the display region and the non-display region, and insulated from the plurality of sensors, and a plurality of dummy patterns insulated from the plurality of sensors. Each of the plurality of dummy patterns is disposed between two adjacent sensors among the plurality of sensors, and at least a portion of the plurality of dummy patterns is electrically connected to the dummy line.

First claim

What is claimed is:

1 . A display device comprising:
a display panel including a display region and a non-display region; and an input sensing circuit disposed on the display panel, wherein the input sensing circuit comprises: a plurality of sensors overlapping the display region and comprising a plurality of first sensors and a plurality of second sensors capacitive-coupled respectively to adjacent first sensors among the plurality of first sensors; a dummy line disposed on a periphery of the plurality of sensors, extending along a part of a boundary between the display region and the non-display region, and insulated from the plurality of sensors; and a plurality of dummy patterns insulated from the plurality of sensors, wherein each of the plurality of dummy patterns is disposed between two adjacent sensors among the plurality of sensors, and wherein at least a portion of the plurality of dummy patterns is electrically connected to the dummy line.

2 . The display device of claim 1 , wherein the dummy line overlaps the non-display region.

3 . The display device of claim 1 , wherein an area of at least one sensor adjacent to the boundary between the display region and the non-display region, among the plurality of sensors, is about 10 percent to about 49 percent of an area of other sensors among the plurality of sensors.

4 . The display device of claim 1 , wherein the display region comprises:
a first display region having a first area; a second display region having a second area smaller than the first area and extending from the first display region; and a third display region having a third area smaller than the first area, extending from the first display region, and spaced apart from the second display region.

5 . The display device of claim 4 ,
wherein the input sensing circuit includes a first input sensing region overlapping the first display region, a second input sensing region overlapping the second display region, and a third input sensing region overlapping the third display region, and wherein the dummy line is disposed between the second input sensing region and the third input sensing region.

6 . The display device of claim 5 , wherein the input sensing circuit further comprises a connection line connecting one sensor disposed in the second input sensing region among the plurality of sensors to one sensor disposed in the third input sensing region among the plurality of sensors.

7 . The display device of claim 6 , wherein a direction in which the connection line extends is substantially the same as a direction in which the dummy line extends.

8 . The display device of claim 7 , wherein the dummy line is disposed adjacent to the connection line.

9 . The display device of claim 8 , wherein the dummy line is disposed between the connection line and the plurality of sensors.

10 . The display device of claim 1 , wherein the dummy line comprises molybdenum, and the plurality of sensors and the plurality of dummy patterns comprise indium tin oxide.

11 . A display device comprising:
a display panel including a display region and a non-display region; a dummy line disposed on the display panel, overlapping the non-display region, and extending along a part of a boundary between the display region and the non-display region; an insulating layer covering the dummy line, disposed on the display panel, and including a contact hole exposing a part of the dummy line; a sensor unit comprising a plurality of sensors disposed on the insulating layer, wherein each of the plurality of sensors is capacitive-coupled to adjacent other sensors of the plurality of sensors; and a plurality of dummy patterns, each of which is disposed between adjacent sensors among the plurality of sensors that are insulated from one another, wherein at least a portion of the plurality of dummy patterns is electrically connected to the dummy line via the contact hole.

12 . The display device of claim 11 , wherein the dummy line is insulated from the plurality of sensors.

13 . The display device of claim 12 , wherein the plurality of sensors comprise:
a plurality of first normal sensors, each of which has a first area; a plurality of second normal sensors, each of which has a second area which is about half of the first area; and a plurality of atypical sensors, each of which has a third area different from the first area and the second area.

14 . The display device of claim 13 , wherein the display region comprises:
a first display region; a second display region extending from the first display region; and a third display region extending from the first display region and spaced apart from the second display region.

15 . The display device of claim 14 , further comprising a connection line disposed on the display panel, covered by the insulating layer, and connecting one sensor overlapping the second display region among the plurality of sensors to one sensor overlapping the third display region among the plurality of sensors.

16 . The display device of claim 15 , wherein a direction in which the connection line extends is substantially the same as a direction in which the dummy line extends.

17 . The display device of claim 16 , wherein the dummy line is disposed adjacent to the connection line.

18 . The display device of claim 17 , wherein the dummy line is disposed between the connection line and the plurality of sensors.

19 . The display device of claim 13 , wherein the plurality of atypical sensors are arranged adjacent to a periphery of the sensor unit,
wherein the dummy line is disposed adjacent to the plurality of atypical sensors.

20 . A display device comprising:
a display panel; a dummy line; first sensors disposed on the display panel and including a left first sensor and a right first sensor opposite to the left first sensor; second sensors disposed on the display panel and including an upper second sensor and a lower second sensor opposite to the upper second sensor, wherein the upper second sensor and the lower second sensor are capacitive-coupled to the left first sensor and the right first sensor; a dummy pattern disposed on the display panel and disposed between the left first sensor and the upper second sensor, between the upper second sensor and the right first sensor, between the right first sensor and the lower second sensor, and between the lower second sensor and the left first sensor; a first connection part including an opening and electrically connecting the left first sensor and the right first sensor; and a second connection part including a pattern disposed in the opening of the first connection part, wherein the pattern electrically connects the upper second sensor and the lower second sensor wherein at least a portion of the dummy pattern is electrically connected to the dummy line.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Kyungsoo
• Kim Il-Joo
• Kim Jong-Hwa
• Han Jeongyun

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• H01L27/3276

  Electricity · mapped topic

• H01L27/3223

  Electricity · mapped topic

• H01L27/323 Primary

  Electricity · mapped topic