Touch screen and touch panel device

Patent metadata

Field	Value
Publication number	US-2018011537-A1
Application number	US-201615541135-A
Country	US
Kind code	A1
Filing date	Feb 5, 2016
Priority date	Feb 10, 2015
Publication date	Jan 11, 2018
Grant date	—

Abstract

A plurality of excitation electrodes, each disposed along a row direction, are provided on a back side of a transparent substrate, and a plurality of detection electrodes, each disposed along a column direction, a plurality of tactile sensation generation row electrodes, each disposed along the row direction, and a plurality of tactile sensation generation column electrodes, each disposed along the column direction, are provided on the front side of the transparent substrate. The front side of the transparent substrate is defined as an operation screen. The excitation electrodes and the tactile sensation generation row electrodes are formed independently of each other, and the detection electrodes and the tactile sensation generation column electrodes are formed independently of each other. In the configuration, the excitation electrodes among the electrodes are situated furthest from the operation screen.

First claim

1 - 15 . (canceled)

16 . A touch screen having an operation screen, comprising:
a transparent substrate having one main surface and another main surface; a plurality of first touch detection electrodes that are each disposed along a first direction and to which an excitation pulse signal is applied during a touch detection period when it is detected whether said operation screen has been touched; a plurality of second touch detection electrodes that are each disposed along a second direction that intersects with said first direction; and a plurality of tactile sensation generation electrodes that are provided independently of said plurality of first and second touch detection electrodes and to which a tactile sensation generation signal is applied during a tactile sensation generation signal application period, wherein said plurality of first touch detection electrodes are formed on the other main surface of said transparent substrate, said plurality of second touch detection electrodes and said plurality of tactile sensation generation electrodes are formed on the one main surface of said transparent substrate, and a surface on the one main surface side of said transparent substrate is defined as said operation screen.

17 . The touch screen according to claim 16 , wherein
each of said plurality of second touch detection electrodes includes a combined structure of a detection principal part and a detection intersection part that is formed narrower than said detection principal part, each of said plurality of tactile sensation generation electrodes includes a combined structure of a tactile sensation generation principal part and a tactile sensation generation intersection part that is formed narrower than said tactile sensation generation principal part, and said detection principal part and said tactile sensation generation principal part are formed to a same height on the one main surface of said transparent substrate without overlapping with one another in a plan view.

18 . The touch screen according to claim 16 , wherein
said plurality of tactile sensation generation electrodes include: a plurality of first tactile sensation generation electrodes that are each disposed along said first direction; and a plurality of second tactile sensation generation electrodes that are each disposed along said second direction.

19 . The touch screen according to claim 18 , wherein
said plurality of first touch detection electrodes each have a rectangular shape in a plan view and are arranged such that each of said first touch detection electrodes overlaps with a given number K of said first tactile sensation generation electrodes in a plan view, wherein K≧2.

20 . The touch screen according to claim 18 , wherein
each of said plurality of second touch detection electrodes includes a combined structure of a detection principal part and a detection intersection part that is formed narrower in said first direction than said detection principal part, each of said plurality of first tactile sensation generation electrodes includes a combined structure of a first tactile sensation generation principal part and a first tactile sensation generation intersection part that is formed narrower in said second direction than said first tactile sensation generation principal part, each of said plurality of second tactile sensation generation electrodes includes a combined structure of a second tactile sensation generation principal part and a second tactile sensation generation intersection part that is formed narrower in said first direction than said second tactile sensation generation principal part, said first direction is a row direction, and said second direction is a column direction that is orthogonal to said row direction, each of said detection principal part, said first tactile sensation generation principal part, and said second tactile sensation generation principal part has a rhombus shape in a plan view and is arranged such that two pairs of opposing angular portions thereof are respectively arranged in said row direction and said column direction, said detection principal part, said first tactile sensation generation principal part, and said second tactile sensation generation principal part respectively include a plurality of detection principal parts, a plurality of first tactile sensation generation principal parts, and a plurality of second tactile sensation generation principal parts, each having said rhombus shape in a plan view, each adjacent pair of said plurality of detection principal parts are configured such that angular portions of the pair that face each other in said column direction are connected by said detection intersection part, each adjacent pair of said plurality of first tactile sensation generation principal parts are configured such that angular portions of the pair that face each other in said row direction are connected by said first tactile sensation generation intersection part, each adjacent pair of said plurality of second tactile sensation generation principal parts are configured such that angular portions of the pair that face each other in said column direction are connected by said second tactile sensation generation intersection part, and said plurality of detection principal parts and said plurality of second tactile sensation generation principal parts are arranged at a regular interval in said column direction, and said plurality of first tactile sensation generation principal parts are arranged at a regular interval in said row direction.

21 . The touch screen according to claim 16 , wherein
said plurality of tactile sensation generation electrodes include: a plurality of first tactile sensation generation electrodes that are separately disposed from one another in said first and second directions, independently of said plurality of first touch detection electrodes; and a plurality of second tactile sensation generation electrodes that are each disposed along said second direction, independently of said plurality of second touch detection electrodes.

22 . The touch screen according to claim 21 , wherein
said first direction is a row direction, said second direction is a column direction that is orthogonal to said row direction, and said plurality of first tactile sensation generation electrodes are separately arranged from one another in a matrix, each of said plurality of second touch detection electrodes has a rectangular shape in a plan view, each of said plurality of first tactile sensation generation electrodes has a first comb tooth portion having a comb tooth shape in a plan view, each of said plurality of second tactile sensation generation electrodes has at least two second comb tooth portions arranged in said column direction and each having a comb tooth shape in a plan view, said second comb tooth portions and said first comb tooth portion extend on opposite sides in said row direction, and said plurality of second tactile sensation generation electrodes are arranged such that said second comb tooth portions fit in at least two of said first comb tooth portions in the same column while keeping a space therebetween.

23 . The touch screen according to claim 16 , wherein
said first touch detection electrodes have a metal wiring mesh structure.

24 . The touch screen according to claim 23 , wherein
said metal wiring mesh structure includes a combined structure of inclined straight portions of a first type and a second type that intersect with each other, and said inclined straight portions of the first type and the second type respectively extend in third and fourth directions that intersect with both of said first and second directions.

Assignees

• Mitsubishi Electric Corp

Inventors

• Agari Masafumi
• Nakagawa Naoki
• Orita Tae
• Ono Takeshi
• Mori Seiichiro

Classifications

• G06F2203/04112

  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 title

• G06F3/016 Primary

  Input arrangements with force or tactile feedback as computer generated output to the user · CPC title

• G06F2203/04107

  Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title