Touch screen panel

• US 20110248953A1
• Filed: 12/10/2010
• Published: 10/13/2011
• Est. Priority Date: 04/12/2010
• 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, Keun-Soo, Lee, Jeong-Yeol
• Granted Patent: US 8,558,805 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• 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 includes a transparent substrate, connecting patterns on the transparent substrate, the connecting patterns including a plurality of first connecting patterns arranged in a first direction and a plurality of second connecting patterns arranged in a second direction, sensing cells including a plurality of first sensing cells connected in the first direction by the first connecting patterns and a plurality of second sensing cells connected in the second direction by the second connecting patterns, and conductive dummy patterns between adjacent sensing cells, the conductive dummy patterns and sensing cells being positioned at different height levels relative to the transparent substrate, and the conductive dummy patterns including prominences projected toward the sensing cells and partially overlapping the sensing cells.

Claims

1. A touch screen panel, comprising:

a transparent substrate;

connecting patterns on the transparent substrate, the connecting patterns including a plurality of first connecting patterns arranged in a first direction and a plurality of second connecting patterns arranged in a second direction;

sensing cells including a plurality of first sensing cells connected in the first direction by the first connecting patterns and a plurality of second sensing cells connected in the second direction by the second connecting patterns; and

conductive dummy patterns between adjacent sensing cells, the conductive dummy patterns and sensing cells being positioned at different height levels relative to the transparent substrate, and the conductive dummy patterns including prominences projected toward the sensing cells and partially overlapping the sensing cells.

2. The touch screen panel as claimed in claim 1, wherein a distance between the conductive dummy patterns and the sensing cells along a normal to the transparent substrate is shorter than a distance between the adjacent sensing cells.

3. The touch screen panel as claimed in claim 1, wherein the prominences include sharp ends in regions overlapping the sensing cells.

4. The touch screen panel as claimed in claim 1, wherein the conductive dummy patterns include a transparent electrode material.

5. The touch screen panel as claimed in claim 1, wherein the first connecting patterns and the second connecting patterns are spaced apart from each other in a substantially same horizontal layer.

6. The touch screen panel as claimed in claim 1, wherein each first connecting pattern includes a plurality of patterns connecting a pair of adjacent first sensing cells.

7. The touch screen panel as claimed in claim 1, wherein the first sensing cells and the second sensing cells are alternately spaced apart from each other in a substantially same horizontal layer.

8. The touch screen panel as claimed in claim 7, further comprising a first insulator between the first connecting patterns and the second connecting patterns,

wherein the first and second connecting patterns are spaced apart from each other in a substantially same horizontal layer, the first and second connecting patterns being at a different height than the first and second sensing cells relative to the transparent substrate,

wherein the first and second connecting patterns partially overlap adjacent first sensing cells and adjacent second sensing cells, respectively, and

the first and second connecting patterns are connected to respective adjacent first and second sensing cells via contact holes through the first insulator, the holes being positioned in overlap regions between the connecting patterns and respective sensing cells.

9. The touch screen panel as claimed in claim 7, further comprising a second insulator between the conductive dummy patterns, the conductive dummy patterns being in a substantially same horizontal layer and at a different height than the first and second sensing cells relative to the transparent substrate.

10. The touch screen panel as claimed in claim 9, wherein a thickness of the second insulator is smaller than a distance between adjacent sensing cells.

11. The touch screen panel as claimed in claim 7, further comprising at least one insulator between the connecting patterns and the conductive dummy patterns, the connecting patterns and the conductive dummy patterns being spaced apart from each other in a substantially same horizontal layer and at a different height than the sensing cells relative to the transparent substrate.

12. The touch screen panel as claimed in claim 1, wherein:

the first sensing cells are connected in a row direction by the first connecting patterns and are connected to position detection lines in each row, respectively; and

the second sensing cells are connected in a column direction by the second connecting patterns and are connected to position detection lines in each column, respectively.