TOUCH APPARATUS

• US 20190163301A1
• Filed: 02/26/2018
• Published: 05/30/2019
• Est. Priority Date: 11/24/2017
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Tai, Cheng-An, Lin, Cheng-Hsing, Chien, Yu-Feng
• Granted Patent: US 10,459,592 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• 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
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

A touch apparatus including a first touch electrode and a second touch electrode is provided. The first touch electrode has first conductive lines constituting a mesh pattern. The second touch electrode has second conductive lines constituting a mesh pattern. The first touch electrode crosses over the second touch electrode to form an interlacing region of the first touch electrode and the second touch electrode. The first conductive lines of the first touch electrode and the second conductive lines of the second touch electrode form M interlacing points within the interlacing region. The first conductive lines of the first touch electrode have N openings within the interlacing region. M and N are positive integers and satisfy:

$5\%\le \left(\frac{N}{M+N}\right)\times 100\%\le 50\%.$

Claims

1. A touch apparatus, comprising:

a first touch electrode, having a plurality of first conductive lines constituting a first mesh pattern; and

a second touch electrode, having a plurality of second conductive lines constituting a second mesh pattern, wherein the first touch electrode crosses over the second touch electrode to form an interlacing region, wherein the first conductive lines of the first touch electrode and the second conductive lines of the second touch electrode form M interlacing points within the interlacing region, wherein the first conductive lines of the first touch electrode have N first openings within the interlacing region, and wherein M and N are positive integers and satisfy;

2. The touch apparatus of claim 1, wherein each of the N first openings is defined by two adjacent ends of corresponding ones of the first conductive lines, and overlaps a solid portion of a corresponding one of the second conductive lines.

3. The touch apparatus of claim 2, wherein the two adjacent ends of the corresponding ones of the first conductive lines are respectively spaced from the solid portions of the corresponding one of the second conductive lines by a distance D, and D satisfies:

1 μ

m≤

D≤

10 μ

m.

4. The touch apparatus of claim 2, further comprising:

a plurality of connection traces, respectively located at two opposite sides of the first touch electrode and electrically connected to the first touch electrode; and

a driving circuit, wherein the connection traces are electrically connected between the first touch electrode and the driving circuit.

5. The touch apparatus of claim 1, wherein the second conductive lines of the second touch electrode have K second openings within the interlacing region, and wherein at least one of the N first openings overlaps at least one of the K second openings within the interlacing region.

6. The touch apparatus of claim 5, wherein K is a positive integer and satisfies:

7. The touch apparatus of claim 1, further comprising:

a substrate, wherein the first touch electrode and the second touch electrode are disposed on the substrate, and the N first openings are randomly distributed on the substrate.

8. A touch apparatus, comprising:

a first touch electrode, having a plurality of first conductive lines constituting a first mesh pattern; and

a second touch electrode, having a plurality of second conductive lines constituting a second mesh pattern, wherein the first touch electrode crosses over the second touch electrode to form an interlacing region, wherein the first conductive lines of the first touch electrode has a plurality of first openings within the interlacing region, and wherein each of the first openings overlaps a solid portion of a corresponding one of the second conductive lines and is defined by two adjacent ends of corresponding ones of the first conductive lines and the two adjacent ends of the corresponding ones of the first conductive lines are respectively spaced from the solid portion of the corresponding one of the second conductive lines by a distance D, and D satisfies;

1 μ

m≤

D≤

10 μ

m.

9. The touch apparatus of claim 8, further comprising:

a plurality of connection traces, respectively located at two opposite sides of the first touch electrode and electrically connected to the first touch electrode; and

a driving circuit, wherein the plurality of connection traces are electrically connected between the first touch electrode and the driving circuit.

10. The touch apparatus of claim 8, further comprising:

a substrate, wherein the first touch electrode and the second touch electrode are disposed on the substrate, and the first openings are randomly distributed on the substrate.

11. A touch apparatus, comprising:

a first touch electrode, having a plurality of first conductive lines constituting a first mesh pattern; and

a second touch electrode, having a plurality of second conductive lines constituting a second mesh pattern, wherein the first touch electrode crosses over the second touch electrode to form an interlacing region, wherein the first conductive lines of the first touch electrode and the second conductive lines of the second touch electrode form M interlacing points within the interlacing region, wherein the first conductive lines of the first touch electrode have N first openings within the interlacing region, wherein the second conductive lines of the second touch electrode have L second openings overlapping solid portions of the first conductive lines within the interlacing region, and wherein M, N, and L are positive integers and satisfy;