IDENTIFYING BODY FOR TOUCH-SENSOR SYSTEM AND TOUCH-SENSOR SYSTEM

• US 20170192612A1
• Filed: 04/23/2015
• Published: 07/06/2017
• Est. Priority Date: 05/28/2014
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: SHINYA, Hideaki
• Application Number:
  US15/313,324
• Publication Number:
  US 20170192612A1
• Time in Patent Office: Days
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 3/0393 Accessories for touch pads or touch screens, e.g. mechanical guides added to touch screens for drawing straight lines, hard keys overlaying touch screens or touch pads
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/0442 using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
• 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

Abstract

A shape of a code identifying body as seen from a touch panel surface is more accurately detected not by correcting a ghost on a controller side of a touch-sensor system or distinguishing the ghost from a real touch by a sensor unit but by rectifying the ghost on the code identifying body side and increasing a detection signal.

An identifying body 1 for a touch-sensor system includes a conductive pattern unit 2 in which a conductive pattern in a prescribed shape is arranged to be opposed to a screen of a touch panel of a touch-sensor system 4 and a virtual grounding circuit unit 3 that has an equivalent function to a ground circuit for the conductive pattern, is installed on a touch panel surface of the touch-sensor system 4 that enables a position input operation of an indicating body, and is used for user authentication and so forth.

Claims

1. An identifying body for a touch-sensor system, the identifying body comprising:

a conductive pattern unit in which a conductive pattern is formed in a shape to be recognized by the touch-sensor system by being brought into contact with or into close vicinity to a touch panel surface of the touch-sensor system; and

a virtual grounding circuit unit that is connected with the conductive pattern unit and has an energy loss unit which consumes energy with respect to a frequency of a drive signal which is used by the touch-sensor system.

2. The identifying body for a touch-sensor system according to claim 1, wherein the energy loss unit includes a series resonance circuit.

3. The identifying body for a touch-sensor system according to claim 1, wherein an antenna circuit is used as the virtual grounding circuit unit.

4. The identifying body for a touch-sensor system according to claim 2, wherein the energy loss unit is configured to resonate at a frequency lower than a drive frequency.

5. The identifying body for a touch-sensor system according to claim 1, wherein as the virtual grounding circuit unit, a coil circuit or a coil circuit that includes an eddy-current loss unit is used.

6. The identifying body for a touch-sensor system according to claim 1, wherein the conductive pattern is a portion of or the whole of the virtual grounding circuit unit.

7. The identifying body for a touch-sensor system according to claim 1, wherein

the conductive pattern is a portion of or the whole of the virtual grounding circuit unit, and

the conductive pattern is formed of a coil.

8. A touch-sensor system that enables reading and identification of a shape of a conductive pattern of an identifying body for a touch-sensor system by installing the identifying body for the touch-sensor system according to claim 1 on a touch panel surface that enables a position input operation.