Touch screen panel

• US 9,019,219 B2
• Filed: 07/11/2012
• Issued: 04/28/2015
• Est. Priority Date: 07/11/2011
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Cheong, Woo-Seok, Shin, Jaeheon
• Primary Examiner(s): NGUYEN, KIMNHUNG T
• Application Number:
  US13/546,519
• Publication Number:
  US 20130016054A1
• Time in Patent Office: 1,021 Days
• Field of Search: 345173-179, 178 1801- 1804
• 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 3/0445 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

Touch screen panels are provided. The touch screen panel may include a first hybrid electrode including first electrode cells arranged on a substrate in a first direction and first connection electrodes connecting the first electrode cells to each other in the first direction, and a second hybrid electrode spaced apart from the first hybrid electrode on the substrate. The second hybrid electrode may include second electrode cells arranged in a second direction crossing the first direction and second connection electrodes connecting the second electrode cells to each other in the second direction. The second electrode cells are disposed between the first connection electrodes. The first hybrid electrode may include a first lower transparent layer and a first metal layer which are sequentially stacked, and the second hybrid electrode may include a second lower transparent layer and a second metal layer which are sequentially stacked.

Claims

1. A touch screen panel comprising:

a substrate;

a first hybrid electrode including first electrode cells arranged on the substrate in a first direction and first connection electrodes connecting the first electrode cells to each other in the first direction; and

a second hybrid electrode spaced apart from the first hybrid electrode on the substrate, the second hybrid electrode including second electrode cells arranged in a second direction crossing the first direction and second connection electrodes connecting the second electrode cells to each other in the second direction, and the second electrode cells disposed between the first connection electrodes,

wherein the first hybrid electrode includes a first lower transparent layer and a first metal layer which are sequentially stacked; and

wherein the second hybrid electrode includes a second lower transparent layer and a second metal layer which are sequentially stacked.

2. The touch screen panel of claim 1, wherein the second connection electrodes extend on the first connection electrodes.

3. The touch screen panel of claim 2, wherein the first metal layer is directly in contact with the second lower transparent layer.

4. The touch screen panel of claim 2, wherein each of the first lower transparent layer and the second lower transparent layer has a refractive index within a range of about 1.9 to about 2.65.

5. The touch screen panel of claim 4, wherein the first lower transparent layer has a thickness within a range of about 10 nm to about 30 nm.

6. The touch screen panel of claim 4, wherein the second lower transparent layer has a thickness within a range of about 100 nm to about 300 nm.

7. The touch screen panel of claim 2, wherein the first metal layer and the second metal layer include Ag or an Ag-alloy.

8. The touch screen panel of claim 7, wherein each of the first and second metal layers has a thickness within a range of about 6 nm to about 12 nm.

9. The touch screen panel of claim 2, further comprising:

a first transparent metal oxide layer on the first metal layer; and

a second transparent metal oxide layer on the second metal layer.

10. The touch screen panel of claim 9, wherein the first transparent metal oxide layer is directly in contact with the second lower transparent layer.

11. The touch screen panel of claim 9, wherein each of the first and second transparent metal oxide layers includes ITO, IZTO, IZO, AZO, or GZO.

12. The touch screen panel of claim 11, wherein each of the first and second transparent metal oxide layers has a thickness within a range of about 30 nm to about 60 nm.

13. The touch screen panel of claim 1, further comprising:

a buffer layer disposed between the substrate and the first hybrid electrode and between the substrate and the second hybrid electrode.

14. The touch screen panel of claim 13, wherein the buffer layer has a refractive index within a range of about 1.7 to about 2.65 and a thickness within a range of about 6 nm to about 80 nm.

15. The touch screen panel of claim 13, wherein the buffer layer includes a first buffer layer and a second buffer layer on the first buffer layer;

and

wherein the first buffer layer has a refractive index greater than a refractive index of the second buffer layer.

16. The touch screen panel of claim 1, further comprising;

an optically clear adhesive disposed on the first hybrid electrode and the second hybrid electrode.