Touch screen panel

• US 8,289,296 B2
• Filed: 03/30/2009
• Issued: 10/16/2012
• Est. Priority Date: 12/01/2008
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Jeong, Hwan-Hee, Jung, Tae-Hyeog, Kang, Sung-Ku, Park, Jung-Mok, Lee, Choon-Hyop, Kim, Shawn, Kim, Sang-Kook
• Primary Examiner(s): Dharia, Prabodh M
• Application Number:
  US12/385,074
• Publication Number:
  US 20100134436A1
• Time in Patent Office: 1,296 Days
• Field of Search: 345/76, 345 82- 87, 345/104, 345/107, 345173-175, 345/204, 345/211, 178 1801- 1803, 341/22, 382/115, 382/565, 313/495, 313/504, 349/1
• 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

Abstract

A touch screen panel that includes a transparent substrate, first sensing patterns formed on the transparent substrate and having first sensing cells arranged in a column and first coupling lines for coupling adjacent first sensing cells, second sensing patterns formed on the transparent substrate and having second sensing cells arranged in a row of the same Y coordinate in a second direction. An insulating layer is formed on the first and second sensing patterns with a number of contact holes formed to expose end portions of the second sensing cells that form the second sensing patterns are formed. A number of coupling patterns are formed on the insulating layer where the contact holes were formed. A number of metal patterns are arranged on edges of regions in which the first and second sensing patterns are formed to electrically couple the sensing patterns in the units of the column or the row to position detection lines.

Claims

1. A touch screen panel, comprising:

a transparent substrate;

first sensing patterns formed on the transparent substrate and comprising first sensing cells arranged in a column of the same X coordinate in a first direction and first coupling lines for coupling adjacent first sensing cells;

second sensing patterns formed on the transparent substrate and comprising second sensing cells arranged in a row of the same Y coordinate in a second direction;

an insulating layer formed on the first and second sensing patterns and having a plurality of contact holes formed to expose end portions of the second sensing cells that form the second sensing patterns are formed;

a plurality of coupling patterns formed on the insulating layer where the contact holes are formed to electrically couple the second sensing cells to each other; and

a plurality of metal patterns arranged on edges of regions in which the first and second sensing patterns are formed to electrically couple the sensing patterns in the unit of the column or the row to position detection lines,

wherein the second sensing patterns are made of a different material than the plurality of coupling patterns, and

wherein the plurality of coupling patterns and the metal patterns are formed in the same layer and are formed of a material having a smaller resistance value than a material of which the first and second sensing patterns are formed.

2. The touch screen panel as claimed in claim 1, wherein the second sensing cells are arranged to alternate with the first sensing cells so as not to overlap with the first sensing cells.

3. The touch screen panel as claimed in claim 1, wherein the first and second sensing patterns are formed of a transparent electrode material having a thickness of 100 to 300 Å

.

4. The touch screen panel as claimed in claim 3, wherein the transparent electrode material is indium tin oxide (ITO).

5. The touch screen panel as claimed in claim 1, wherein end portions of the coupling patterns are formed to be wider than other portions of the coupling patterns.

6. The touch screen panel as claimed in claim 5, wherein the end portions of the coupling patterns are in contact with the contact holes of the insulating layer.

7. The touch screen panel as claimed in claim 1, wherein the end portions of the coupling patterns are in contact with the contact holes of the insulating layer.

8. The touch screen panel as claimed in claim 1, wherein the plurality of coupling patterns are made of an opaque metal.

9. A touch screen panel, comprising:

a transparent substrate;

first sensing patterns formed on the transparent substrate and comprising first sensing cells arranged in a column of the same X coordinate in a first direction and first coupling lines for coupling adjacent first sensing cells;

second sensing patterns formed on the transparent substrate and comprising second sensing cells arranged in a row of the same Y coordinate in a second direction;

an insulating layer formed on the first and second sensing patterns and having a plurality of contact holes formed to expose end portions of the second sensing cells that form the second sensing patterns are formed;

a plurality of coupling patterns composed of a low resistance conductive material formed on the insulating layer where the contact holes are formed to electrically couple the second sensing cells to each other, each of said plurality of coupling patterns having two ends portions; and

a plurality of metal patterns composed of the same low resistance conductive material as the plurality of coupling patterns and arranged on edges of regions in which the first and second sensing patterns are formed to electrically couple the sensing patterns in the unit of the column or the row to position detection lines,

wherein the second sensing patterns are made of a different material than the plurality of coupling patterns and said two end portions of each of the plurality of coupling patterns are wider than any other portion of each of the plurality of coupling patterns.

10. The touch screen panel as claimed in claim 9, wherein the plurality of coupling patterns and the metal patterns are formed in the same layer and are formed of a material having a smaller resistance value than a material of which the first and second sensing patterns are formed.

11. The touch screen panel as claimed in claim 9, wherein the second sensing cells are arranged to alternate with the first sensing cells so as not to overlap with the first sensing cells.

12. The touch screen panel as claimed in claim 9, wherein the first and second sensing patterns are formed of a transparent electrode material having a thickness of 100 to 300 Å

.

13. The touch screen panel as claimed in claim 12, wherein the transparent electrode material is indium tin oxide (ITO).

14. The touch screen panel as claimed in claim 9, wherein the plurality of coupling patterns are made of an opaque metal.