Touch screen panel and display device having the same

• US 8,698,768 B2
• Filed: 05/26/2011
• Issued: 04/15/2014
• Est. Priority Date: 10/28/2010
• 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, Jeong-Yeol, Jo, Gyoo-Chul, Kim, Kwang-Min, Cho, Seung-Yeon, Choi, Jung-Ho
• Primary Examiner(s): Yodichkas, Aneeta
• Application Number:
  US13/116,499
• Publication Number:
  US 20120105343A1
• Time in Patent Office: 1,055 Days
• Field of Search: 345/173
• US Class Current: 345/173
• 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 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• 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

Abstract

A touch screen panel comprises a first sensing pattern provided with first sensing cells arranged on one row along a first direction on a transparent substrate, and a first connection pattern through which adjacent first sensing cells are electrically connected to each other. A second sensing pattern is provided with second sensing cells arranged so as to be spaced apart from the first sensing cells on one column along a second direction on the transparent substrate, and a second connection pattern through which adjacent second sensing cells are electrically connected to each other. The first connection pattern includes at least two pairs of metal patterns arranged so as to be spaced apart from one another, and a transparent pattern formed in the shape of an island in the second sensing pattern so as to be electrically connected to one or the other end of each of the metal patterns.

Claims

1. A touch screen panel, comprising:

a first sensing pattern provided with a plurality of first sensing cells arranged on one row along a first direction on a transparent substrate, and a first connection pattern through which adjacent first sensing cells are electrically connected to each other; and

a second sensing pattern provided with a plurality of second sensing cells arranged spaced-apart from the first sensing cells on one column along a second direction on the transparent substrate, and a second connection pattern through which adjacent second sensing cells are electrically connected to each other,

the first connection pattern comprising at least two pairs of metal patterns arranged spaced-apart from one another, and a transparent pattern formed in a shape of an island in an interior of the second sensing pattern and electrically connected to an end of each of the metal patterns, the transparent pattern and the second sensing pattern configured to not overlap with each other in a direction perpendicular to a major surface of the transparent substrate.

2. The touch screen panel according to claim 1, wherein the transparent pattern is formed of a same material in a same layer as the second sensing pattern.

3. The touch screen panel according to claim 1, wherein the transparent pattern is formed of one of indium tin oxide (ITO) and indium zinc oxide (IZO).

4. The touch screen panel according to claim 1, wherein the transparent pattern is formed of a same material in a same layer as the first sensing pattern, and is spaced apart from the first sensing pattern.

5. The touch screen panel according to claim 1, wherein the transparent pattern is provided with a pair of transparent patterns arranged spaced-apart from each other in the adjacent second sensing cells, and wherein each of the pair of transparent patterns is disposed spaced-apart from a respective second sensing cell.

6. The touch screen panel according to claim 1, wherein the transparent pattern is extended from the second sensing cell to the second connection pattern and the adjacent second sensing cells.

7. The touch screen panel according to claim 1, wherein each metal pattern is disposed diagonally with respect to the first direction.

8. The touch screen panel according to claim 1, wherein each metal pattern is made of a metallic material, and overlaps the second sensing cell with an insulating layer interposed between the second sensing cell and the metal pattern.

9. The touch screen panel according to claim 8, wherein said each metal pattern is formed of a low-resistance metallic material comprising one of molybdenum (Mo), silver (Ag), titanium (Ti), copper (Cu), aluminum (Al) and molybdenum/aluminum/molybdenum (Mo/Al/Mo).

10. The touch screen panel according to claim 1, wherein the adjacent first sensing cells are electrically connected to each other by providing the first connection pattern with the metal patterns at both edges of the transparent pattern with respect to the transparent pattern.

11. A display device having a touch screen panel, comprising:

a display panel which displays an image;

a first sensing pattern provided with a plurality of first sensing cells arranged on one row along a first direction on the display panel, and a first connection pattern through which adjacent first sensing cells are electrically connected to each other; and

a second sensing pattern provided with a plurality of second sensing cells arranged spaced-apart from the first sensing cells on one column along a second direction on the display panel, and a second connection pattern through which adjacent second sensing cells are electrically connected to each other,

the first connection pattern comprising at least two pairs of metal patterns arranged spaced-apart from one another, and a transparent pattern formed in a shape of an island in an interior of the second sensing pattern and electrically connected to an end of each of the metal patterns, the transparent pattern and the second sensing pattern configured to not overlap with each other in a direction perpendicular to a major surface of the transparent substrate.

12. The display device according to claim 11, wherein the transparent pattern is formed of a same material in a same layer as the second sensing pattern.

13. The display device according to claim 11, wherein the transparent pattern is formed of one of indium tin oxide (ITO) and indium zinc oxide (IZO).

14. The display device according to claim 11, wherein the transparent pattern is formed of a same material in a same layer as the first sensing pattern, and is spaced apart from the first sensing pattern.

15. The display device according to claim 11, wherein the transparent pattern is provided with a pair of transparent patterns arranged spaced-apart from each other in the adjacent second sensing cells, and wherein each of the pair of transparent patterns is disposed spaced-apart from a respective second sensing cell.

16. The display device according to claim 11, wherein the transparent pattern is extended from the second sensing cell to the second connection pattern and the adjacent second sensing cells.

17. The display device according to claim 11, wherein each metal pattern is disposed diagonally with respect to the first direction.

18. The display device according to claim 11, wherein each metal pattern is made of a metallic material, and overlaps the second sensing cell with an insulating layer interposed between the second sensing cell and the metal pattern.

19. The display device according to claim 18, wherein said each metal pattern is formed of a low-resistance metallic material comprising one of molybdenum (Mo), silver (Ag), titanium (Ti), copper (Cu), aluminum (Al) and molybdenum/aluminum/molybdenum (Mo/Al/Mo).

20. The display device according to claim 11, wherein the adjacent first sensing cells are electrically connected to each other by providing the first connection pattern with the metal patterns at both edges of the transparent pattern with respect to the transparent pattern.