Display device having an input sensing unit

Patent metadata

Field	Value
Publication number	US-10475862-B2
Application number	US-201816053477-A
Country	US
Kind code	B2
Filing date	Aug 2, 2018
Priority date	Aug 14, 2017
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A display device includes a display panel and an input-sensing unit located on the display panel. The input-sensing unit includes a plurality of sensor portions. At least one of the sensor portions is different from the others in terms of area or distance.

First claim

What is claimed is:

1. A display device comprising:
a display panel; and
an input-sensing unit on the display panel,
wherein the input-sensing unit comprises:
a plurality of first electrodes extending in a first direction; and
a plurality of second electrodes extending in a second direction crossing the first direction,
each of the plurality of first electrodes comprises a plurality of first sensor portions and a plurality of first connecting portions connecting the plurality of first sensor portions to each other,
each of the plurality of second electrodes comprises a plurality of second sensor portions and a plurality of second connecting portions connecting the plurality of second sensor portions to each other, and
the plurality of first sensor portions of one of the plurality of first electrodes comprises:
a first normal sensor portion having a first area and being spaced apart from an adjacent one of the second sensor portions by a first distance; and
a first severed sensor portion having a second area smaller than the first area and being spaced apart from an adjacent one of the second sensor portions by a second distance that is smaller than the first distance.

2. The display device of claim 1 , wherein the first severed sensor portion has a shape which can be made by removing a portion of a shape of the first normal sensor portion.

3. The display device of claim 2 , wherein the second area is less than or larger than half the first area.

4. The display device of claim 2 , wherein the plurality of first sensor portions of the one of the first electrodes comprises a plurality of the first normal sensor portions,
the plurality of the first normal sensor portions are arranged in the first direction, and
the first severed sensor portion is placed outside the plurality of the first normal sensor portions in the first direction.

5. The display device of claim 1 , further comprising an optical dummy electrode located between the plurality of first sensors and the plurality of second sensors and electrically disconnected from the plurality of first sensors and the plurality of second sensors,
wherein a width of the optical dummy electrode between the first severed sensor portion and the second sensor portion adjacent to the first severed sensor portion is smaller than a width of the optical dummy electrode between the first normal sensor portion and the second sensor portion adjacent to the first normal sensor portion.

6. The display device of claim 1 , wherein a length from an end of the first severed sensor portion to another end of a first sensor portion adjacent to the first severed sensor portion measured in the first direction is smaller than a length from an end of a first normal sensor portion of the plurality of normal sensor portions to another end of a first sensor portion adjacent to the first normal sensor portion measured in the first direction, and
an area of the first sensor portion adjacent to the first severed sensor portion is substantially the same as the second area.

7. The display device of claim 1 , wherein the plurality of first electrodes comprise another first electrode with a length in the first direction that is different from a length in the first direction of the one of the first electrodes, and which includes a plurality of first sensor portions, and
the plurality of first sensor portions of the another first electrode comprise:
a second normal sensor portion having the first area; and
a second severed sensor portion having a third area different from the first area and the second area.

8. The display device of claim 7 , wherein an end of the first severed sensor portion is connected to an end of an adjacent one of the plurality of first sensor portions of the one of the first electrodes by a corresponding one of the first connecting portions,
an end of the second severed sensor portion is connected to an end of an adjacent one of the plurality of first sensor portions of the another first electrode by a corresponding one of the first connecting portions, and
a length from another end of the first severed sensor portion to another end of the adjacent one of the plurality of first sensor portions of the one of the first electrodes is smaller than a length from another end of the second severed sensor portion to another end of the adjacent one of the plurality of first sensor portions of the another first electrode.

9. The display device of claim 7 , wherein the third area is half the first area.

10. The display device of claim 1 , further comprising an auxiliary electrode connected to the first severed sensor portion,
wherein a side edge of the auxiliary electrode faces a side edge of the second sensor portion adjacent to the first severed sensor portion.

11. The display device of claim 10 , wherein the auxiliary electrode has a rod shape, and a length of the auxiliary electrode is smaller than a width of the normal sensor portion.

12. The display device of claim 1 , wherein the input-sensing unit further comprises:
a plurality of signal lines connected to the plurality of second electrodes; and
a compensation electrode connected to the first severed sensor portion, the compensation electrode being on a layer different from that for the plurality of signal lines, and overlapped with at least one of the plurality of signal lines.

13. The display device of claim 12 , wherein the compensation electrode and the first severed sensor portion are integrally formed.

14. The display device of claim 12 , wherein, when viewed in a plan view, a side edge of the first severed sensor portion has a curved shape, and
the compensation electrode extends from the side edge of the first severed sensor portion.

15. The display device of claim 1 , wherein one of the plurality of first connecting portions which is used to connect adjacent ones of the first normal sensor portions has a width smaller than that of another of the plurality of first connecting portions which is used to connect the first severed sensor portion to a first normal sensor portion adjacent to the first severed sensor portion.

16. The display device of claim 15 , further comprising:
a first electrostatic discharge pattern connected to the first severed sensor portion and overlapped with at least one of the plurality of second electrodes, the first electrostatic discharge pattern having a first width; and
a second electrostatic discharge pattern connected to the first normal sensor portion and overlapped with at least one of the plurality of second electrodes, the second electrostatic discharge pattern having a second width smaller than the first width.

17. The display device of claim 1 , wherein the display panel comprises corners, the corners having a rounded shape,
the input-sensing unit comprises corners have a rounded shape corresponding to that of the corners of the display panel, and
the first severed sensor portion is adjacent to the corner of the input-sensing unit.

18. The display device of claim 1 , wherein the input-sensing unit comprises a sensing region, in which the plurality of first electrodes and the plurality of second electrodes are located, and a non-sensing region, in which the plurality of first electrodes and the plurality of second electrodes are not located,
a boundary is defined between the non-sensing region and the sensing region, and
a side edge of the first severed sensor portion corresponds to the boundary.

19. A display device comprising:
a plurality of first sensors comprising a normal

Assignees

• Samsung Display Co Ltd

Inventors

• Jeong Hwan-Hee
• Moon Sungjae

Classifications

• G06F2203/04102

  Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · 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

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title