TOUCH MODULE, FABRICATION METHOD THEREOF, AND MOBILE TERMINAL HAVING THE SAME

• US 20100120473A1
• Filed: 11/06/2009
• Published: 05/13/2010
• Est. Priority Date: 11/12/2008
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Oh, Han-Gyu
• Application Number:
  US12/614,324
• Publication Number:
  US 20100120473A1
• Time in Patent Office: Days
• US Class Current: 455/566
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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

The present invention related to a touch module for a mobile terminal. The touch module includes a light-transmissive substrate and a touch-sensitive layer formed on the substrate. The touch-sensitive layer includes a first conductive layer formed on a surface of the substrate in a first light-transmissive pattern, a first insulating layer formed directly on a surface of the first conductive layer, and a second conductive layer formed on a surface of the first insulating layer in a second light-transmissive pattern different from the first light-transmissive pattern to determine a touched position.

Claims

1. A touch module for a mobile terminal comprising:

a light-transmissive substrate; and

a touch-sensitive layer formed on the substrate, the touch-sensitive layer comprising a first conductive layer formed on a surface of the substrate in a first light-transmissive pattern, a first insulating layer formed directly on a surface of the first conductive layer, and a second conductive layer formed on a surface of the first insulating layer in a second light-transmissive pattern different from the first light-transmissive pattern to determine a touched position.

2. The touch module of claim 1, wherein the first light-transmissive pattern comprises a plurality of conductive lines arranged in a first direction, and the second light-transmissive pattern comprises a plurality of conductive lines arranged in a second direction perpendicular to the first direction.

3. The touch module of claim 1, further comprising:

a second insulating layer formed at an outer portion of the second conductive layer; and

a conductive shield layer formed as a film on a surface of the second insulating layer configured to interrupt electromagnetic waves.

4. The touch module of claim 1, wherein the first and second conductive layers are formed through deposition.

5. The touch module of claim 1, wherein the first and second conductive layers comprise indium tin oxide (ITO).

6. The touch module of claim 1, wherein an area of the first insulating layer is as large as an area of the first or second conductive layers.

7. The touch module of claim 2, wherein the first insulating layer is partially formed at each crossing of a conductive line arranged in the first direction with a conductive line arranged in the second direction.

8. The touch module of claim 1, wherein the substrate comprises at least one of glass or plastic.

9. A mobile terminal comprising:

a display; and

a touch module disposed on the display and detecting a touch applied thereto,

wherein the touch module comprises a light-transmissive substrate, a first conductive layer formed on a surface of the substrate in a first pattern, an insulating layer formed on a surface of the first conductive layer, and a second conductive layer formed on a surface of the insulating layer in a second pattern different from the first pattern to determine a touched position.

10. The mobile terminal of claim 9, wherein one surface of the substrate is exposed and the first conductive layer is formed on the surface of the substrate opposite to the exposed surface.

11. The mobile terminal of claim 9, wherein the first pattern comprises a plurality of conductive lines arranged in a first direction, and the second pattern comprises a plurality of conductive lines arranged in a second direction perpendicular to the first direction.

12. The mobile terminal of claim 9, further comprising:

a second insulating layer formed at an outer portion of the second conductive layer; and

a conductive shield layer formed as a film on a surface of the second insulating layer configured to interrupt electromagnetic waves.

13. The mobile terminal of claim 9, wherein the first and second conductive layers are formed through deposition.

14. The mobile terminal of claim 9, wherein the first and second conductive layers comprise indium tin oxide (ITO).

15. The mobile terminal of claim 9, wherein an area of the insulating layer is as large as an area of the first or second conductive layers.

16. The mobile terminal of claim 11, wherein the insulating layer is partially formed at each crossing of a conductive line arranged in the first direction with a conductive line arranged in the second direction.

17. The mobile terminal of claim 9, wherein the substrate comprises at least one of glass or plastic.

18. A mobile terminal comprising:

a display; and

a touch-sensitive layer disposed on the display and detecting a touch applied thereto,

wherein the touch sensitive layer comprises a first conductive layer formed on a surface of the display in a first pattern, an insulating layer formed on a surface of the first conductive layer, and a second conductive layer formed on a surface of the insulating layer in a second pattern different from the first pattern to determine a touched position.

19. A method for fabricating a touch module, the method comprising:

forming a first conductive layer in a first pattern on a surface of a light-transmissive base;

forming an insulating layer on a surface of the first conductive layer; and

forming a second conductive layer in a second pattern different from the first pattern on a surface of the insulating layer to determine a touched position on the touch module.