Curved touch screen panel and method of manufacturing the same

• US 20110273383A1
• Filed: 02/10/2011
• Published: 11/10/2011
• Est. Priority Date: 05/10/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Samsung Display Company Limited (Samsung Group)
• Inventors: Jeon, Byeong-Kyu, Kang, Sung-Ku
• Granted Patent: US 9,218,092 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 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 and a method of manufacturing the same, the touch screen panel including a curved substrate; sensing patterns on at least one surface of the curved substrate; and an insulating layer covering the sensing patterns.

Claims

1. A touch screen panel, comprising:

a curved substrate;

sensing patterns on at least one surface of the curved substrate; and

an insulating layer covering the sensing patterns.

2. The touch screen panel as claimed in claim 1, wherein the curved substrate is a curved glass substrate.

3. The touch screen panel as claimed in claim 2, further comprising a chemical enhancing layer on at least one of a first surface and a second surface of the curved glass substrate.

4. The touch screen panel as claimed in claim 3, wherein:

the chemical enhancing layer is a first chemical enhancing layer on the first surface of the curved glass substrate,

the touch screen panel further includes a second chemical enhancing layer on the second surface of the curved glass substrate, and

a thickness of the first chemical enhancing layer is different from a thickness of the second chemical enhancing layer.

5. The touch screen panel as claimed in claim 4, wherein:

the thickness of the first chemical enhancing layer is greater than the thickness of the second chemical enhancing layer, and

the curved glass substrate is curved in a first direction toward the first chemical enhancing layer.

6. The touch screen panel as claimed in claim 5, wherein the sensing patterns are on the first surface of the curved glass substrate.

7. The touch screen panel as claimed in claim 6, wherein:

the curved glass substrate constitutes a window for a display device, and the first surface of the curved glass substrate faces a display panel of the display device.

8. The touch screen panel as claimed in claim 4, wherein:

the first chemical enhancing layer is on only one of the first surface and the second surface of the curved glass substrate, and

the sensing patterns are on the surface including the chemical enhancing layer.

9. The touch screen panel as claimed in claim 3, wherein the chemical enhancing layer is realized by a Na component existing on the surface of the curved glass substrate being replaced by a K component.

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

an adhesive layer on one surface of the insulating layer, and

a ground electrode layer facing the insulating layer.

11. A method of manufacturing a touch screen panel, the method comprising:

providing a glass substrate having a first surface and a second surface;

performing a chemical enhancing process to form a chemical enhancing layer on at least one of the first surface and the second surface of the glass substrate to form a chemical enhancing layer such that the glass substrate is curved in a direction of the at least one surface on which the chemical enhancing layer is formed or in a direction of a surface having a relatively thicker chemical enhancing layer so that a curved glass substrate is realized;

forming sensing patterns on one of the first and second surfaces of the curved glass substrate; and

forming an insulating layer to cover the sensing patterns.

12. The method as claimed in claim 11, wherein the chemical enhancing process is performed on both the first surface and the second surface to form a first chemical enhancing layer and a second chemical enhancing layer, respectively, and thicknesses of first and second chemical enhancing layers are different from each other.

13. The method as claimed in claim 12, wherein performing the chemical enhancing process is carried out such that:

the thickness of the first chemical enhancing layer is larger than the thickness of the second chemical enhancing layer, and

the curved glass substrate is curved in the direction of the first surface having the first chemical enhancing layer thereon.

14. The method as claimed in claim 12, further comprising sequentially forming an adhesive layer and a ground electrode layer on one surface of the insulating layer.

15. The method as claimed in claim 12, wherein performing the chemical enhancing process includes:

exposing one surface of the glass substrate to a KNO₃ solution, and heating the glass substrate at a temperature of about 400°

C. to about 450°

C. for about 15 to about 18 hours.