Touch panel for improving cross structure of sensing pattern

• US 10,055,077 B2
• Filed: 10/15/2014
• Issued: 08/21/2018
• Est. Priority Date: 03/31/2014
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Oem, Seongsu, You, Young Sun, Lee, Sun Hwa, Jin, Kwang Yong, Choi, Yongjae
• Primary Examiner(s): Shen, Yuzhen
• Application Number:
  US15/300,895
• Publication Number:
  US 20170024042A1
• Time in Patent Office: 1,406 Days
• Field of Search: 345174
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• 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 3/0443 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
• 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 3/046 by electromagnetic means

Abstract

The present invention relates to a touch panel having pen touch and electrode touch functions. Specifically, the present invention relates to a touch panel, which can enhance visibility of a view area and simplify the process of manufacturing the touch panel by improving wiring of sensing patterns for pen touch and arranging overlap structures, which are created as the sensing patterns cross each other, in a separate area other than the view area.

Claims

1. A touch panel comprising:

a substrate divided into a view area and a bezel area;

a plurality of sensing patterns formed on the view area of the substrate and configured to sense a touch signal associated with an induced electromagnetic force generated from a touch pen;

a plurality of capacitive patterns formed in the view area of the substrate and configured to sense a capacitive input signal;

first wires extending respectively between a driving substrate and of the plurality of sensing patterns or the plurality of capacitive patterns;

second wires that extend between the plurality of sensing patterns; and

an overlap area in which the second wires extended between the plurality of sensing patterns cross each other, the overlap area being formed in the bezel area of the substrate or an area outside the substrate,

wherein;

the plurality of sensing patterns and the plurality of capacitive patterns are both formed in mesh shapes,

the plurality of sensing patterns are formed to surround the plurality of capacitive patterns in one same layer,

a width of the plurality of sensing pattern is narrower than a width of the plurality of capacitive pattern, and

the second wires extended between the plurality of sensing patterns are insulated and cross each other only in the overlap area.

2. The touch panel according to claim 1, wherein an overlap substrate is formed in the overlap area, and the second wires extended between the plurality of sensing patterns are insulated and cross each other through via holes formed in the overlap substrate.

3. The touch panel according to claim 2, wherein the overlap substrate is flexible printed circuit board (FPCB).

4. The touch panel according to claim 1, wherein an overlap substrate on which an insulation layer is stacked is formed in the overlap area, and the second wires extended between the plurality of sensing patterns are insulated and cross each other through the insulation layer.

5. The touch panel according to claim 1, wherein the plurality of sensing patterns is formed using a same material as that of a resistive film pattern or the plurality of capacitive patterns.

6. The touch panel according to claim 1, wherein a width of the overlap area is smaller than a half of a width of the view area at a side at which the overlap area is located.

7. The touch panel according to claim 1, wherein the overlap area is formed in an overlap substrate located outside the substrate.

8. A display apparatus comprising a display panel and a touch panel, the touch panel including:

a substrate divided into a view area and a bezel area;

a plurality of sensing patterns formed on the view area of the substrate and configured to sense a touch signal associated with an induced electromagnetic force generated from a touch pen;

a plurality of capacitive patterns formed in the view area of the substrate and configured to sense a capacitive input signal;

first wires extending respectively between a driving substrate and of the plurality of sensing patterns or the plurality of capacitive patterns;

second wires that extend between the plurality of sensing patterns; and

an overlap area in which the second wires extended between the plurality of sensing patterns cross each other, the overlap area being formed in the bezel area of the substrate or an area outside the substrate,

wherein;

the plurality of sensing patterns and the plurality of capacitive patterns are both formed in mesh shapes,

the plurality of sensing patterns are formed to surround the plurality of capacitive patterns in one same layer,

a width of the plurality of sensing pattern is narrower than a width of the plurality of capacitive pattern, and

the second wires extended between the plurality of sensing patterns are insulated and cross each other only in the overlap area.

9. The display apparatus according to claim 8, wherein a width of the overlap area is smaller than a half of a width of the view area at a side at which the overlap area is located.

10. The display apparatus according to claim 8, wherein the overlap area is formed in an overlap substrate located outside the substrate.