Touch panel

Patent metadata

Field	Value
Publication number	US-9904432-B2
Application number	US-201514735620-A
Country	US
Kind code	B2
Filing date	Jun 10, 2015
Priority date	Jun 23, 2014
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A touch panel of the present disclosure includes a substrate divided into a view area and an unavailable area. Sensing electrodes are formed in the view area to sense a first input, and touch electrodes are formed in the view area not to be overlapped with the sensing electrodes to sense a second input. A first wire is formed in the unavailable area to connect first ends of the touch electrodes, and second wires are formed in the unavailable area and connected to the second ends of the touch electrodes. A controller is connected to the second wires to control the touch electrodes, in which the first wire may be connected to the plurality of touch electrodes, and the second wires may connect each of the plurality of touch electrodes to the controller.

First claim

What is claimed is:

1. A touch panel comprising:
a substrate divided into a view area and a non-view area;
an intermediate layer on the substrate that includes photocurable ultraviolet resin, wherein the intermediate layer includes an intaglio pattern of a mesh shape, wherein a conductive material is provided in the intaglio pattern;
sensing electrodes formed on the intermediate layer and in the view area to sense a first input, wherein the sensing electrodes include a plurality of sub-electrodes and the sub-electrodes form a mesh pattern;
touch electrodes formed on the intermediate layer and in the view area, not to be overlapped with the sensing electrodes, to sense a second input, wherein the touch electrodes include a plurality of sub-electrodes and the sub-electrodes form a mesh pattern, wherein the touch electrodes are provided in a numeric order from a first touch electrode formed outside the sensing electrodes to an Nth touch electrode, and wherein a width of one of the touch electrodes formed between two adjacent sensing electrodes is wider than a width of the first touch electrode formed outside the sensing electrodes, and wherein only one touch electrode is disposed between each two adjacent sensing electrodes, and first ends of all the touch electrodes are connected to a first wire;
wherein the sensing electrodes and the touch electrodes include mesh lines (LA) and mesh openings (OA) formed between the mesh lines (LA) by the plurality of sub-electrodes, and a line width of the mesh line (LA) is 0.1 to 10 μm;
the first wire formed in the non-view area to connect the first ends of the touch electrodes;
second wires formed in the non-view area and connected to second ends of the touch electrodes; and
a controller connected to the second wires to control the touch electrodes, wherein the first wire is connected to the touch electrodes, and the second wires connect the touch electrodes to the controller,
wherein the controller selectively supplies power to the touch electrodes in order to use any one of the touch electrodes for forming a loop as a path for flowing current from the controller and the other touch electrode as a path for flowing the current back into the controller, wherein upon the touch electrodes receiving power, the first wire, the second wires, and the controller form a loop,
wherein the controller sequentially forms a loop by selectively supplying power to the touch electrodes.

2. The touch panel according to claim 1 , wherein the first wire is formed in the non-view area in plurality.

3. The touch panel according to claim 1 , wherein the substrate includes a first substrate and a second substrate, the sensing electrodes comprises first and second sensing electrodes, and the touch electrodes comprises first and second touching electrodes, wherein
a first surface of the first substrate includes the first sensing electrodes formed in the view area in a first direction to sense the first input, and the first touch electrodes formed in the view area in the first direction to sense the second input, the first sensing electrodes and the first touch electrodes being non-overlapping; and
a first surface of the second substrate includes the second sensing electrodes formed in the view area in a second direction to sense the first input, and the second touch electrodes formed in the view area in the second direction to sense the second input the second sensing electrodes and the second touch electrodes being non-overlapping.

4. The touch panel according to claim 3 , wherein an adhesive layer is provided between a second surface of the second substrate on which the second sensing electrodes and the second touch electrodes are not formed and the first surface of the first substrate, wherein a first surface of the adhesive layer is bonded to the second surface of the second substrate, and a second surface of the adhesive layer is bonded to the first surface of the first substrate.

5. The touch panel according to claim 1 , wherein the at least one first wire transmits signals of first to n-th loops formed by the touch electrodes selectively supplied with power.

6. The touch panel according to claim 1 , wherein a corresponding second wire transmits a signal of a loop created when a corresponding touch electrode connected to the corresponding second wire is supplied with power.

7. A touch panel comprising:
a substrate divided into a view area and an unavailable area;
an intermediate layer on the substrate that includes photocurable ultraviolet resin, wherein the intermediate layer includes an intaglio pattern of a mesh shape, wherein a conductive material is provided in the intaglio pattern;
sensing electrodes formed on the intermediate layer and in the view area to sense a first input, wherein the sensing electrodes include a plurality of sub-electrodes and the sub-electrodes form a mesh pattern;
touch electrodes formed on the intermediate layer and in the view area, not to be overlapped with the sensing electrodes, to sense a second input, wherein the touch electrodes include a plurality of sub-electrodes and the sub-electrodes form a mesh pattern, wherein the touch electrodes are provided in a numeric order from a first touch electrode formed outside the sensing electrodes to an Nth touch electrode, and wherein a width of one of the touch electrodes formed between two adjacent sensing electrodes is wider than a width of the first touch electrode formed outside the sensing electrodes, and wherein only one touch electrode is disposed between each two adjacent sensing electrodes, and first ends of all the touch electrodes are connected to a first wire;
wherein the sensing electrodes and the touch electrodes include mesh lines (LA) and mesh openings (OA) formed between the mesh lines (LA) by the plurality of sub-electrodes, and a line width of the mesh line (LA) is 0.1 to 10 μm;
the first wire formed in the unavailable area to connect the first ends of the touch electrodes;
second wires formed in the unavailable area and connected to the second ends of the touch electrodes; and
a controller connected to the second wires to control the touch electrodes, wherein
a width of a touch electrode formed between adjacent sensing electrodes is wider than a width of the first wire and narrower than a width of the adjacent sensing electrodes,
wherein the controller selectively supplies power to the touch electrodes in order to use any one of the touch electrodes for forming a loop as a path for flowing current from the controller and the other touch electrode as a path for flowing the current back into the controller,
wherein the controller sequentially forms a loop by selectively supplying power to the touch electrode.

Assignees

• Lg Innotek Co Ltd

Inventors

• Choi Yongjae
• You Young Sun
• Mun Jong Woon
• Park Bong Jun
• Oem Seong Su
• Lee Sun Hwa
• Jin Kwang Yong

Classifications

• G06F2203/04102

  Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/047 Primary

  using sets of wires, e.g. crossed wires · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F2203/04111

  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 title