TOUCH PANEL FOR IMPROVING CROSS STRUCTURE OF SENSING PATTERN

• US 20170024042A1
• Filed: 10/15/2014
• Published: 01/26/2017
• 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
• Granted Patent: US 10,055,077 B2
• Time in Patent Office: Days
• 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 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 plurality of sensing patterns formed on a substrate to sense a touch signal; and

an overlap area which is a certain area on the substrate or out of the substrate, in which the plurality of sensing patterns crosses each other, wherein the plurality of sensing patterns is insulated and crosses 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 plurality of sensing patterns is insulated and crosses each other through via holes formed in the overlap substrate.

3. 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 plurality of sensing patterns is insulated and crosses each other through the insulation layer.

4. The touch panel according to claim 1, wherein the overlap substrate is an FPCB.

5. The touch panel according to claim 1, wherein the plurality of sensing patterns is formed in a shape surrounding capacitive patterns, and the overlap area is formed in an outer area of the substrate.

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

7. The touch panel according to claim 1, wherein the plurality of sensing patterns is formed in a shape of a mesh.

8. A display apparatus comprising:

a plurality of sensing patterns formed on a substrate to sense a touch signal; and

an overlap area which is a certain area on the substrate or out of the substrate, in which the plurality of sensing patterns crosses each other, wherein the plurality of sensing patterns is insulated and crosses each other only in the overlap area.