Touch screen panel

• US 9,019,232 B2
• Filed: 03/08/2013
• Issued: 04/28/2015
• Est. Priority Date: 12/14/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kang, Sung-Ku, Lee, Choon-Hyop, Lee, Jeong-Heon
• Primary Examiner(s): SHENG, TOM V
• Application Number:
  US13/791,556
• Publication Number:
  US 20140168109A1
• Time in Patent Office: 781 Days
• Field of Search: 345/173, 345/174, 349/12, 178/18.03, 178/18.06
• 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 3/0443 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 having first and second surfaces opposite to each other, a plurality of first sensing electrodes formed on the first surface of the substrate and connected in a first direction, a plurality of second sensing electrodes arranged between the first sensing electrodes and connected in a second direction intersecting the first direction, first connecting patterns connecting the first sensing electrodes in the first direction, a plurality of third sensing electrodes formed on the second surface of the substrate and overlapping the first sensing electrodes, a plurality of fourth sensing electrodes arranged between the third sensing electrodes and overlapping the second sensing electrodes, and second connecting patterns connecting the fourth sensing electrodes in the second direction. The sensing electrodes of the first surface and the sensing electrodes of the second surface overlap each other and are electrically connected to each other through vertical connecting units.

Claims

1. A touch screen panel, comprising:

a substrate having a first surface and a second surface opposite to the first surface;

a plurality of first sensing electrodes formed on the first surface of the substrate and electrically connected in a first direction;

a plurality of second sensing electrodes arranged between the first sensing electrodes and electrically connected in a second direction that intersects the first direction;

a plurality of first connecting patterns connecting the first sensing electrodes in the first direction, each first connecting pattern, which electrically connects two of the first sensing electrodes, being disposed between two of the plurality of second sensing electrodes that are immediately adjacent to said two of the first sensing electrodes;

a plurality of third sensing electrodes formed on the second surface of the substrate and overlapping with the first sensing electrodes;

a plurality of fourth sensing electrodes arranged between the third sensing electrodes and overlapping with the second sensing electrodes; and

a plurality of second connecting patterns connecting the fourth sensing electrodes in the second direction, each second connecting pattern, which electrically connects two of the fourth sensing electrodes, being disposed between two of the plurality of third sensing electrodes that are immediately adjacent to said two of the fourth sensing electrodes;

the sensing electrodes of the first surface and the sensing electrodes of the second surface overlapping with each other and electrically connected to each other through vertical connecting units for connecting the first surface of the substrate and the second surface of the substrate to each other.

2. The touch screen panel as claimed in claim 1, the sensing electrodes having parts extended to interiors of the vertical connecting units so as to contact sensing electrodes of an opposite surface of the substrate.

3. The touch screen panel as claimed in claim 2, the sensing electrodes having regions opened by the vertical connecting units.

4. The touch screen panel as claimed in claim 3, the substrate being mesh-shaped so that the plurality of vertical connecting units are provided in a sensing region that one sensing electrode has.

5. The touch screen panel as claimed in claim 4, each of the sensing electrodes being mesh-shaped so as to correspond to the mesh-shaped substrate.

6. The touch screen panel as claimed in claim 1, further comprising:

a plurality of first bridge patterns connecting the second sensing electrodes in the second direction; and

a plurality of second bridge patterns connecting the third sensing electrodes in the first direction.

7. The touch screen panel as claimed in claim 6, the first bridge patterns being separated from the second sensing electrodes but electrically connected to the second sensing electrodes in one of upper and lower parts of the second sensing electrodes so as to connect the second sensing electrodes in units of lines in the second direction.

8. The touch screen panel as claimed in claim 7, further comprising an insulating layer interposed between the first connecting patterns and the first bridge patterns.

9. The touch screen panel as claimed in claim 8, the first bridge patterns being electrically connected to the second sensing electrodes in said one of the upper and lower parts of the second sensing electrodes through contact holes formed in the insulating layer.

10. The touch screen panel as claimed in claim 6, the first to fourth sensing electrodes and the first and second connecting patterns being formed of a transparent electrode material, and the first and second bridge patterns being formed of an opaque metal material.

11. The touch screen panel as claimed in claim 1, further comprising outside wiring lines for connecting the first sensing electrodes and the second sensing electrodes to an external driving circuit in units of lines in the first direction and the second direction.

12. The touch screen panel as claimed in claim 1, the first and second sensing electrodes being arranged in a same layer.

13. The touch screen panel as claimed in claim 1, the substrate comprising a thin film substrate formed of at least one selected from a group consisting of polyethylene terephthalate (PET), polycarbonate (PC), acryl, polymethylmethacrylate (PMMA), triacetyl cellulose (TAC), polyethersulfone (PES), and polyimide (PI).