Curved touch panel and display device comprising same

Patent metadata

Field	Value
Publication number	US-10466841-B2
Application number	US-201515326158-A
Country	US
Kind code	B2
Filing date	Jun 23, 2015
Priority date	Jul 15, 2014
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A curved touch panel and a display device including the same are provided. The touch panel includes a flat region in which first sensing cells are arranged; and a curved region in which second sensing cells are arranged that are different from the first sensing cells in terms of at least one of an arrangement pattern and a shape.

First claim

The invention claimed is:

1. A touch panel comprising:
first sensing cells which are arranged on a flat region maintaining a flat state; and
second sensing cells which are arranged on a curved region maintaining a curved state, the second sensing cells being different from the first sensing cells in terms of at least one of an arrangement pattern and a shape,
wherein arrangement distances of the second sensing cells, which are measured along the curved region, differ according to a curve angle of the curved region, and
wherein a first arrangement distance of the second sensing cells corresponding to a first curve angle is different from a second arrangement distance of the second sensing cells corresponding to a second curve angle, which is different from the first curve angle.

2. The touch panel of claim 1 , wherein at least one of shapes and arrangement distances of the first sensing cells are uniform.

3. The touch panel of claim 1 , wherein at least one of arrangement distances of the second sensing cells is different from arrangement distances of the first sensing cells.

4. The touch panel of claim 3 , wherein at least one of arrangement distances of the second sensing cells is less than the arrangement distances of the first sensing cells.

5. The touch panel of claim 1 , wherein an arrangement density of the second sensing cells is different from an arrangement density of the first sensing cells.

6. The touch panel of claim 5 , wherein the arrangement density of the second sensing cells is higher than the arrangement density of the first sensing cells.

7. The touch panel of claim 1 , wherein a size of at least one of the second sensing cells is different from sizes of the first sensing cells.

8. The touch panel of claim 7 , wherein the size of at least one of the second sensing cells is greater than the sizes of the first sensing cells.

9. The touch panel of claim 1 , wherein an electrical conductivity of at least one of the second sensing cells is different from an electrical conductivity of the first sensing cells.

10. The touch panel of claim 1 , further comprising: a sensing circuit configured to determine a touch point by using sensing output signals received from some of the first sensing cells and the second sensing cells.

11. The touch panel of claim 10 , wherein, when the determined touch point is in the curved region, the sensing circuit re-determines the touch point by using sensing output signals received from others of the second sensing cells.

12. The touch panel of claim 1 , wherein at least one of the first sensing cells and the second sensing cells comprises first and second electrodes spaced apart from each other and having capacitance varying according to a touch of an external object with respect to the touch panel.

13. A display device comprising:
a display panel configured to display an image; and
the touch panel of claim 1 arranged on the display panel.

14. The display device of claim 13 , wherein a region of the display panel overlapping with the curved region is curved.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Park Kyung-Wan
• Cho Shi-Yun
• Kang In-Kwon
• Lee Ga-Eun
• Jung Ji-Hyun

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/0418 Primary

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

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title