Touch panel

Patent metadata

Field	Value
Publication number	US-9971450-B2
Application number	US-201715704040-A
Country	US
Kind code	B2
Filing date	Sep 14, 2017
Priority date	Jul 31, 2008
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A touch panel includes a plurality of first electrodes, a plurality of second electrodes, and a plurality of wirings. Each of the plurality of first electrodes has a first portion formed on a layer different from that on which the second electrodes are formed and intersecting the second electrodes, and a second portion formed on the same layer as that on which the second electrodes are formed, but separated from the second electrode. The second electrode and the second portion of the first electrode are formed on a layer different than the layer where the wiring is formed. The first portion of the first electrode is connected to the second portion through a contact portion formed in an insulating film made of a negative resist between the first portion and the second electrode.

First claim

What is claimed is:

1. A touch panel, comprising:
a substrate;
a plurality of first electrodes on the substrate, extending in a first direction, each of the plurality of first electrodes having first portions on a first layer, each of the plurality of first electrodes having second portions on a second layer different from the first layer;
a plurality of second electrodes on the second layer extending in a second direction so as to three-dimensionally intersect the respective plurality of first electrodes;
a plurality of wirings electrically connected to respective electrodes among the plurality of first electrodes and the plurality of second electrodes in a peripheral area of the substrate; and
a protective film above the plurality of first electrodes and the plurality of second electrodes, wherein
the first portions three-dimensionally intersect the respective plurality of second electrodes, and the second portions are separated from the plurality of second electrodes,
each of the first portions electrically connects adjacent two portions among the second portions at an intersection,
each of the first portions is separated from the second electrodes through an insulating film at the intersection,
the plurality of wirings overlap with the first electrodes and the second electrodes in the peripheral area and separated from the first electrodes and the second electrodes through the insulating film,
each of the plurality of wirings is electrically connected to corresponding one of the first electrodes and the second electrodes by a connection portion formed on the insulating film in the peripheral area,
the plurality of wirings and the connection portion are covered with the protective film, and
each of the first portions and the plurality of wirings are made of a same metal material.

2. The touch panel according to claim 1 , wherein
the metal material is made of a same layer.

3. The touch panel according to claim 1 , wherein
the plurality of second electrodes and the second portions are formed of electrically conductive transparent materials.

4. The touch panel according to claim 1 , wherein
each of the plurality of second electrodes has a portion, located between adjacent two electrodes of the plurality of first electrodes, wider than another portion thereof which three dimensionally intersects corresponding one of the first portions, and
the second portions are formed wider between adjacent two electrodes of the plurality of second electrodes than the first portions.

5. The touch panel according to claim 1 , the protective film is a resist.

6. A touch panel, comprising:
a substrate;
a plurality of first electrodes on the substrate, extending in a first direction, each of the plurality of first electrodes having first portions on a first layer, each of the plurality of first electrodes having second portions on a second layer different from the first layer;
a plurality of second electrodes on the second layer extending in a second direction so as to three-dimensionally intersect the respective plurality of first electrodes;
a plurality of wirings electrically connected to respective electrodes among the plurality of first electrodes and the plurality of second electrodes in a peripheral area of the substrate; and
a protective film above the plurality of first electrodes and the plurality of second electrodes, wherein
the first portions three-dimensionally intersect the respective plurality of second electrodes, and the second portions are separated from the plurality of second electrodes,
each of the first portions electrically connects adjacent two portions among the second portions at an intersection,
each of the first portions is separated from the second electrodes through an insulating film at the intersection,
each of the plurality of wirings is electrically connected to corresponding one of the first electrodes and the second electrodes through a connection portion which is provided on the insulating film in the peripheral area,
the plurality of wirings and the connection portion are covered with the protective film,
the plurality of wirings and the first portions are made of a same metal material, and
a width of the connection portion is greater than that of the first portions.

7. The touch panel according to claim 6 , wherein
the metal material is made of a same layer.

8. The touch panel according to claim 6 , wherein
the plurality of second electrodes and the second portions are formed of electrically conductive transparent materials.

9. The touch panel according to claim 6 , wherein
each of the plurality of second electrodes has a portion, located between adjacent two electrodes of the plurality of first electrodes, wider than another portion thereof which three dimensionally intersects corresponding one of the first portions, and
the second portions are formed wider between adjacent two electrodes of the plurality of second electrodes than the first portions.

10. The touch panel according to claim 6 , the protective film is a resist.

Assignees

• Japan Display Inc
• Panasonic Liquid Crystal Displ

Inventors

• Teramoto Masahiro

Classifications

• 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

• H01H1/58

  Electric connections to or between contacts; Terminals {(for high tension switches H01H33/025; for electromagnetic relays H01H50/14; for circuit breakers H01H71/08)} · CPC title

• G06F2203/04103

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

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title