TOUCH SCREEN PANEL AND METHOD OF FABRICATING THE SAME

• US 20100182272A1
• Filed: 06/18/2009
• Published: 07/22/2010
• Est. Priority Date: 01/16/2009
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Samsung Display Company Limited (Samsung Group)
• Inventors: Jung, Tae-Hyeog, Kang, Sung-Ku, Kim, Jin-Guen
• Application Number:
  US12/487,514
• Publication Number:
  US 20100182272A1
• Time in Patent Office: Days
• 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 3/0445 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 for an image display device and a method of fabricating the same. The touch screen panel includes: a transparent substrate; a plurality of first and second sensing patterns on one side of the transparent substrate, the first sensing patterns coupled to one another along a first direction, and the second sensing patterns positioned between the first sensing patterns including patterns separated from one another; a first insulating layer on the first and second sensing patterns, the first insulating layer having a plurality of contact holes, and the contact holes exposing portions of the second sensing patterns; and connecting patterns on the first insulating layer, the connecting patterns coupling the second sensing patterns to one another along the second direction through the contact holes. In the touch screen panel, the first insulating layer is formed of a transparent photoresist.

Claims

1. A touch screen panel comprising:

a transparent substrate;

a plurality of first and second sensing patterns on one side of the transparent substrate, the first sensing patterns coupled to one another along a first direction, and the second sensing patterns positioned between the first sensing patterns and comprising patterns separated from one another;

a first insulating layer on the first and second sensing patterns, the first insulating layer having a plurality of contact holes, and the contact holes exposing portions of the second sensing patterns; and

connecting patterns on the first insulating layer, the connecting patterns coupling the second sensing patterns to one another along the second direction through the contact holes,

wherein the first insulating layer is formed of a transparent photoresist.

2. The touch screen panel of claim 1, wherein the photoresist comprises an organic photoresist including at least one of an acryl-based photoresist, a polyimide-based photoresist or a siloxane-based photoresist.

3. The touch screen panel of claim 1, further comprising a second insulating layer on the connecting patterns.

4. The touch screen panel of claim 3, wherein the second insulating layer is formed of a transparent insulating material including at least one of SiO₂, TiO₂ or ZrO₂.

5. The touch screen panel of claim 1, further comprising a transparent ground electrode on the other side of the transparent substrate.

6. The touch screen panel of claim 5, further comprising a third insulating layer on the transparent ground electrode.

7. The touch screen panel of claim 6, wherein the third insulating layer is formed of a transparent insulating material including at least one of SiO₂, TiO₂ or ZrO₂.

8. The touch screen panel of claim 1, wherein the first and second sensing patterns and the connecting patterns are formed of a transparent electrode material.

9. A method of fabricating a touch screen panel, the method comprising:

forming a transparent electrode layer on one side of a transparent substrate and then patterning the transparent electrode layer, thereby forming a plurality of first sensing patterns coupled to one another along a first direction and a plurality of second sensing patterns between the first sensing patterns, the second sensing patterns comprising patterns separated from one another;

forming a first insulating layer of a transparent photoresist on the first and second sensing patterns;

forming a plurality of contact holes in the first insulating layer using a photolithography process, the contact holes exposing portions of the second sensing patterns; and

forming connecting patterns on the first insulating layer, the connecting patterns coupling the second sensing patterns to one another along the second direction through the contact holes.

10. The method of claim 9, wherein the transparent photoresist comprises an organic photoresist including at least one of an acryl-based photoresist, a polyimide-based photoresist and a siloxane-based photoresist.

11. The method of claim 9, further comprising forming a second insulating layer on the connecting patterns.

12. The method of claim 9, further comprising forming a transparent ground electrode on the other side of the transparent electrode.

13. The method of claim 12, further comprising forming a third insulating layer on the transparent ground electrode.