TOUCH SCREEN PANEL

• US 20110234512A1
• Filed: 11/18/2010
• Published: 09/29/2011
• Est. Priority Date: 03/23/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Jang, Brent, Kwak, Won-Kyu, Kim, Do-Youb
• Granted Patent: US 9,477,351 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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 3/0412 Digitisers structurally integrated in a display
• 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 includes: a flat panel display including an upper substrate, a lower substrate, and pixels arranged on a display region of the lower substrate in a stripe arrangement; first sensing cells arranged in a first direction on the upper substrate and second sensing cells arranged in a second direction on the upper substrate; first connection patterns electrically connecting adjacent ones of the first sensing cells to each other in the first direction, and second connection patterns electrically connecting adjacent ones of the second sensing cells to each other in the second direction, wherein at least one of the first connection patterns and the second connection patterns is inclined so that it partially overlaps with the pixels.

Claims

1. A touch screen panel comprising:

a flat panel display comprising an upper substrate, a lower substrate, and pixels arranged on a display region of the lower substrate in a stripe arrangement;

first sensing cells arranged in a first direction on the upper substrate and second sensing cells arranged in a second direction on the upper substrate;

first connection patterns electrically connecting adjacent ones of the first sensing cells to each other in the first direction, and second connection patterns electrically connecting adjacent ones of the second sensing cells to each other in the second direction,

wherein at least one of the first connection patterns and the second connection patterns are inclined so that they partially overlap with the pixels.

2. The touch screen panel as claimed in claim 1, wherein the connection patterns in the inclined form are made of a low resistance opaque metal.

3. The touch screen panel as claimed in claim 1, wherein the first and second sensing cells are on a display region of the upper substrate that overlaps with the display region of the lower substrate.

4. The touch screen panel as claimed in claim 1, further comprising a plurality of metal patterns located at a periphery of a display region of the upper substrate on which the first and second sensing cells are located, the metal patterns electrically coupling the first and second sensing cells column-by-column or row-by-row.

5. The touch screen panel as claimed in claim 4, wherein the first and second connection patterns and the metal patterns are on a same layer and have a resistance value lower than that of a material forming the first and second sensing cells.

6. The touch screen panel as claimed in claim 1, wherein the second sensing cells are alternately arranged with the first sensing cells so that they do not overlap with the first sensing cells.

7. The touch screen panel as claimed in claim 1, wherein adjacent ones of the second sensing cells are electrically coupled to each other by at least one of the second connection patterns.

8. A touch screen panel comprising:

first connection patterns extending in a first direction on a transparent substrate;

second connection patterns extending in a second direction on the transparent substrate and being spaced from the first connection patterns;

first sensing cells arranged in the first direction, adjacent ones of the first sensing cells being electrically coupled to each other by a corresponding one of the first connection patterns in the first direction; and

second sensing cells arranged in the second direction, adjacent ones of the second sensing cells being electrically coupled to each other by a corresponding one of the second connection patterns in the second direction.

9. The touch screen panel as claimed in claim 8, wherein one of the second connection patterns partially overlaps a corresponding one of the first sensing cells adjacent to two of the second sensing cells that are coupled to the one of the second connection patterns, and further comprising an insulating layer between the one of the second connection patterns and the corresponding one of the first sensing cells.

10. The touch screen panel as claimed in claim 9, wherein the insulating layer has a form of a plurality of islands that are spaced from each other.

11. The touch screen panel as claimed in claim 9, wherein the insulating layer comprises an inorganic insulating layer of a transparent material selected from the group consisting of silicon oxide (SiO₂) and silicon nitride (SiNx).

12. The touch screen panel as claimed in claim 8, wherein the first and second connection patterns are formed in a rectangular bar form.

13. The touch screen panel as claimed in claim 8, wherein the first and second sensing cells are made of indium-tin-oxide (ITO).