TOUCH SCREEN PANEL

• US 20160139728A1
• Filed: 08/21/2015
• Published: 05/19/2016
• Est. Priority Date: 11/13/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Kang-Won, Jeon, Byeong-Kyu, Park, Hee-Woong, Lee, Jeong-Heon
• Granted Patent: US 10,203,818 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04111 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 Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A touch screen panel includes a substrate, sensing electrodes, outer wirings, contact units, and at least one dummy pattern. The substrate includes an active region and a non-active region, the non-active region disposed outside the active region. The sensing electrodes are disposed in the active region. The outer wirings are disposed in the non-active region. Each of the outer wirings is connected to a respective group of the sensing electrodes. The contact units connect the respective groups of sensing electrodes to the outer wirings. The at least one dummy pattern is disposed between adjacent contact units of the contact units.

Claims

1. A touch screen panel, comprising:

a substrate comprising an active region and a non-active region, the non-active region disposed outside the active region;

sensing electrodes disposed in the active region;

outer wirings disposed in the non-active region, each of the outer wirings being connected to a respective group of the sensing electrodes;

contact units connecting the respective groups of sensing electrodes to the outer wirings; and

at least one dummy pattern disposed between adjacent contact units of the contact units.

2. The touch screen panel of claim 1, wherein:

the contact units are disposed at a first end of the sensing electrodes;

the at least one dummy pattern is disposed at a second end of the sensing electrodes opposite the first end of the sensing electrodes; and

the at least one dummy pattern is not connected to the outer wirings.

3. The touch screen panel of claim 2, wherein the contact units and the at least one dummy pattern are arranged in a same line.

4. The touch screen panel of claim 3, wherein the contact units and the at least one dummy pattern are arranged in an alternating pattern.

5. The touch screen panel of claim 4, wherein:

the contact units and the at least one dummy pattern are formed of a same material; and

widths of the contact units and the at least one dummy pattern are the same.

6. The touch screen panel of claim 1, wherein lengths of the contact units are greater than line widths of the outer wirings.

7. The touch screen panel of claim 1, wherein:

the at least one dummy pattern comprises a first dummy pattern and a second dummy pattern; and

sizes of the first dummy pattern and the second dummy pattern are different from one another.

8. The touch screen panel of claim 7, wherein sizes and shapes of the first dummy pattern and the contact units are the same.

9. The touch screen panel of claim 8, wherein:

the second dummy pattern is smaller than the first dummy pattern; and

the second dummy pattern is disposed between a first contact unit of the contact units and the first dummy pattern.

10. The touch screen panel of claim 9, wherein:

the second dummy pattern is one of a plurality of second dummy patterns; and

the first dummy pattern is alternately arranged with the plurality of second dummy patterns.

11. The touch screen panel of claim 1, wherein the sensing electrodes comprise:

first sensing electrodes longitudinally extending in a first direction; and

second sensing electrodes longitudinally extending in a second direction intersecting the first direction.

12. The touch screen panel of claim 11, further comprising:

a bridge pattern connecting adjacent first sensing electrodes to one another.

13. The touch screen panel of claim 1, further comprising:

a window substrate facing the substrate.

14. The touch screen panel of claim 13, further comprising:

a light shielding layer disposed on the window substrate, the light shielding layer overlapping the non-active region.

15. The touch screen panel of claim 13, further comprising:

a polarizing plate disposed between the window substrate and the substrate.

16. The touch screen panel of claim 1, wherein the respective group of sensing electrodes are aligned with one another in a same line of sensing electrodes.

17. A touch screen panel, comprising:

a first region configured to detect interaction with the touch screen, the first region comprising;

a first group of sensing electrodes substantially aligned in a first direction, and

a second group of sensing electrodes substantially aligned in the first direction, the second group of sensing electrodes being spaced apart from the first group of sensing electrodes;

a second region disposed outside the first region, the second region comprising;

a first wiring electrically connected to the first group of sensing electrodes, and

a second wiring electrically connected to the second group of sensing electrodes;

a first contact pattern disposed between and electrically connecting the first wiring and the first group of sensing electrodes;

a second contact pattern disposed between and electrically connecting the second wiring and the second group of sensing electrodes; and

a dummy electrode disposed between the first contact pattern and the second contact pattern.

18. The touch screen panel of claim 17, wherein the dummy electrode is substantially aligned with the first contact pattern and the second contact pattern in a second direction crossing the first direction.

19. The touch screen panel of claim 17, further comprising:

a second dummy electrode disposed between the dummy electrode and the first contact pattern; and

a third dummy electrode disposed between the dummy electrode and the second contact pattern.

20. The touch screen panel of claim 19, wherein the dummy electrode, the second dummy electrode, and the third dummy electrode are substantially aligned in a second direction crossing the first direction.