Touch screen and method of manufacturing the same

• US 9,152,256 B2
• Filed: 11/13/2009
• Issued: 10/06/2015
• Est. Priority Date: 11/14/2008
• Status: Expired due to Fees

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Kim, Gap Young, Na, Hyun Min, Hong, Hyuk Jin
• Primary Examiner(s): Robinson, Elizabeth A
• Assistant Examiner(s): Lowrey, Daniel D
• Application Number:
  US13/129,355
• Publication Number:
  US 20120038564A1
• Time in Patent Office: 2,153 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Abstract

A touch screen and a method for manufacturing the touch screen are provided. The touch screen can include: an ITO (Indium Tin Oxide) film deposited on the upper surface of a flexible plastic film; a primary metal layer deposited on the ITO film; and a secondary metal film plated on the primary metal layer. The touch screen is durable and has excellent sensitivity.

Claims

1. A touch screen, comprising:

a transparent conductive layer on a substrate;

a first metal layer deposited directly on the transparent conductive layer, the first metal layer including a buffer layer on the transparent conductive layer and a seed layer on the buffer layer; and

a second metal layer formed directly on the seed layer, the second metal layer including the same material as that of the seed layer;

wherein the seed layer is copper, and

wherein the buffer layer comprises Ni-Cr.

2. The touch screen according to claim 1, wherein the substrate comprises a flexible plastic film including at least one material selected from:

polyethylene terephthalate (PET);

polyethylene sulfonate (PES);

polycarbonate (PC);

polyethylene (PE);

polyimide (PI); and

Acryl.

3. The touch screen according to claim 1, wherein the transparent conductive layer includes indium tin oxide (ITO).

4. The touch screen according to claim 1, wherein the second metal layer is electroplated Cu.

5. A touch screen, comprising:

a transparent conductive layer on a substrate;

a first metal layer deposited directly on the transparent conductive layer, the first metal layer including a buffer layer on the transparent conductive layer and a seed layer on the buffer layer; and

a second metal layer formed directly on the seed layer, the second metal layer including the same material as that of the seed layer;

wherein the seed layer is copper, and

wherein the combined resistance value of the first and second metal layers is 0.1 Ω

/square or less.

6. The touch screen according to claim 5, wherein the substrate comprises a flexible plastic film including at least one material selected from:

polyethylene terephthalate (PET);

polyethylene sulfonate (PES);

polycarbonate (PC);

polyethylene (PE);

polyimide (PI); and

Acryl.

7. The touch screen according to claim 5, wherein the buffer layer comprises Ni—

Cr.

8. The touch screen according to claim 5, wherein the transparent conductive layer includes indium tin oxide (ITO).

9. The touch screen according to claim 5, wherein the second metal layer is electroplated Cu.