Touch screen panel and display device having the same

• US 20110242020A1
• Filed: 12/09/2010
• Published: 10/06/2011
• Est. Priority Date: 04/01/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Jeong, Hwan Hee, Kang, Sung-Ku
• Granted Patent: US 8,487,892 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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 first and second substrates disposed to face each other, conductive sensing cells in a touch active area on a first surface of the first substrate that faces the second substrate, a black matrix in a non-touch active area on a first surface of the second substrate that faces the first substrate, the non-touch active area being positioned outside the touch active area, an adhesive layer between the first and second substrates, the adhesive layer joining the first and second substrates together, and an insulating layer in the touch active area on the first substrate, the insulating layer covering the conductive sensing cells and overlapping a concave portion formed on the first surface of the second substrate by the black matrix.

Claims

1. A touch screen panel, comprising:

first and second substrates disposed to face each other;

conductive sensing cells in a touch active area on a first surface of the first substrate that faces the second substrate;

a black matrix in a non-touch active area on a first surface of the second substrate that faces the first substrate, the non-touch active area being positioned outside the touch active area;

an adhesive layer between the first and second substrates, the adhesive layer joining the first and second substrates together; and

an insulating layer in the touch active area on the first substrate, the insulating layer covering the conductive sensing cells and overlapping a concave portion formed on the first surface of the second substrate by the black matrix.

2. The touch screen panel as claimed in claim 1, wherein the insulating layer is formed of a transparent organic insulating material.

3. The touch screen panel as claimed in claim 1, wherein the insulating layer has a center portion formed higher than a peripheral portion thereof so as to have a slope.

4. The touch screen panel as claimed in claim 1, further comprising an anti-scatter film entirely covering the first surface of the second substrate.

5. The touch screen panel as claimed in claim 1, wherein the adhesive layer is formed of an optically clear adhesive.

6. The touch screen panel as claimed in claim 1, wherein the insulating layer is positioned inside a region defined by the black matrix.

7. A display device, comprising:

a display panel for displaying images; and

a touch screen panel positioned on the display panel to receive a touch input, the touch screen panel including;

first and second substrates disposed to face each other;

conductive sensing cells in a touch active area on a first surface of the first substrate that faces the second substrate;

a black matrix in a non-touch active area on a first surface of the second substrate that faces the first substrate, the non-touch active area being positioned outside the touch active area;

an adhesive layer between the first and second substrates, the adhesive layer joining the first and second substrates together; and

an insulating layer in the touch active area on the first substrate, the insulating layer covering the conductive sensing cells and overlapping a concave portion formed on the first surface of the second substrate by the black matrix.

8. The display device as claimed in claim 7, wherein the insulating layer is formed of a transparent organic insulating material.

9. The display device as claimed in claim 7, wherein the insulating layer has a center portion formed higher than a peripheral portion thereof so as to have a slope.

10. The display device as claimed in claim 7, wherein the second substrate is a window substrate that is positioned at the uppermost portion of the display device and comes in direct contact with a contact object for the touch input.