Touch window

• US 9,501,190 B2
• Filed: 08/22/2014
• Issued: 11/22/2016
• Est. Priority Date: 09/16/2013
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Lee, Byoung Ryul, Han, Jae Heung
• Primary Examiner(s): PHAM, VIET DAVID
• Application Number:
  US14/466,462
• Publication Number:
  US 20150077652A1
• Time in Patent Office: 823 Days
• Field of Search: 345/173
• US Class Current: 1/1
• 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 3/0443 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

Disclosed is a touch window. The touch window includes a cover substrate; a ground electrode on the cover substrate; and a circuit substrate on the cover substrate, including a ground connecting part connected with the ground electrode and an open area to expose the ground connecting part, wherein the ground electrode is electrically connected to the ground connecting part through the open area.

Claims

1. A touch window comprising:

a cover substrate;

a ground electrode on the cover substrate;

a circuit substrate on the cover substrate, including a ground connecting part connected with the ground electrode and an open area to expose the ground connecting part;

an electrode substrate on the cover substrate, the electrode substrate including a sensing electrode to sense a position and a wire to electrically connect the sensing electrode; and

a wire connecting part connected to the wire;

wherein the ground electrode is electrically connected to the ground connecting part through the open area;

wherein the circuit substrate includes a bottom coverlay on which the ground connecting part and the wire connecting part are disposed, and a top coverlay disposed on the bottom coverlay; and

wherein the ground connecting part and the wire connecting part are disposed on both surfaces of the bottom coverlay, respectively.

2. The touch window of claim 1, wherein the open area is provided in the top coverlay.

3. The touch window of claim 1, further comprising an adhesive layer between the cover substrate and the circuit substrate.

4. The touch window of claim 3, wherein the adhesive layer has conductivity.

5. The touch window of claim 3, wherein the adhesive layer electrically connects the ground electrode to the ground connecting part.

6. The touch window of claim 1, further comprising a second ground electrode adjacent to the sensing electrode.

7. The touch window of claim 6, wherein the sensing electrode and the second ground electrode are disposed on a same plane.

8. The touch window of claim 1, wherein the sensing electrode includes a first sensing electrode and a second sensing electrode.

9. The touch window of claim 8, wherein the electrode substrate includes a first electrode substrate and a second electrode substrate,

the first electrode is disposed on the first electrode substrate, and

the second sensing electrode is disposed on the second electrode substrate.

10. The touch window of claim 8, wherein the first sensing electrode is disposed on the cover substrate, and

the second sensing electrode is disposed on the electrode substrate.

11. The touch window of claim 8, wherein the first and second sensing electrodes are disposed on both surfaces of the electrode substrate.

12. A touch device comprising:

a display panel; and

a touch window on the display panel,

wherein the touch window comprises;

a cover substrate;

a ground electrode on the cover substrate;

a circuit substrate on the cover substrate, including a ground connecting part connected with the ground electrode and an open area to expose the ground connecting part;

an electrode substrate on the cover substrate, the electrode substrate including a sensing electrode to sense a position and a wire to electrically connect the sensing electrode; and

a wire connecting part connected to the wire;

wherein the ground electrode is electrically connected to the ground connecting part through the open area;

wherein the circuit substrate includes a bottom coverlay on which the ground connecting part and the wire connecting part are disposed, and a top coverlay disposed on the bottom coverlay; and

wherein the ground connecting art and the wire connecting art are disposed on both surfaces of the bottom coverlay, respectively.