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Touch sensor device and method

A touch sensor and controller technology, applied in the direction of inductors, measuring devices, fixed inductors, etc., can solve the problems of controller complexity and cost increase

Inactive Publication Date: 2019-04-16
1004335 ONTARIO INC CARRYING ON BUSINESS AS A D METRO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Controller complexity and cost may increase as channel count increases

Method used

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  • Touch sensor device and method
  • Touch sensor device and method
  • Touch sensor device and method

Examples

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Embodiment Construction

[0058] The present disclosure provides a capacitive sensing apparatus and method that may be used with a touch sensor panel (eg, a touch screen) that may be engaged with one or more fingers or any other conductive object (eg, a stylus). Touch sensors can implement one-dimensional or two-dimensional sensing.

[0059] Although the embodiments shown in the figures and described below are capacitive touch sensors operating in the RF range, aspects of the present disclosure may also be implemented in non-RF touch sensors.

[0060] figure 1 is a schematic diagram of an exemplary series LCR resonant circuit 100 . The circuit 100 includes a fixed resistor R1 , a fixed inductor L, a fixed capacitor C0 , a variable capacitor Cf and an RF signal input 102 . Fixed resistor R1 , fixed inductor L and fixed capacitor C0 are connected in series between RF signal input 102 and ground 108 . Fixed capacitor C0 is connected to ground 108 . The variable capacitance Cf is connected in parallel ...

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Abstract

A common capacitive touch sensor may have a two dimensional array of transparent conductive strips going from edge to edge on a substrate layer or sheet of a touch sensor. According to some aspects, there is provided a capacitive touch sensor device including a substrate layer and a plurality of resonant circuits. Each resonant circuit includes an electrode, and each resonant circuit has a respective resonance frequency that is unique within the plurality of resonant circuits. The electrodes of the resonant circuits are distributed on the substrate layer. A controller for a touch sensor is also provided that includes a signal generator to excite at least one plurality of resonant circuits, where each resonant circuit has a respective resonance frequency. The signal generator is tunable togenerate input signals to excite the resonant circuits. The controller also includes a detector for measuring the responses of the resonant circuits.

Description

[0001] related application [0002] This application claims priority to US Patent Application Serial No. 15 / 190,329, filed June 23, 2016, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates generally to capacitive touch sensing technology, and more particularly to radio frequency (RF) touch sensing devices. Background technique [0004] Of the various interfaces available for interacting with a computer system, the easiest to use and understand is the touch screen. The technology allows users to simply touch icons or pictures to navigate the system, display the information the user is looking for, and enter data. For this reason, the technology is widely used in many applications, including desktop computers, tablet computers, mobile devices, banking machines, kiosks, restaurants, automobiles, navigation systems, and more. [0005] There are many different traditional touch screen technologies. These m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/08G01B7/004H01F37/00H03K17/96
CPCG06F3/04166G06F3/0448G06F3/0446G06F3/0416G06F3/044G06F2203/04103G06F2203/04104G06F2203/04112
Inventor 艾伯特·M·戴维格奥尔基·帕夫洛夫罗伯特·唐纳德·麦卡洛克
Owner 1004335 ONTARIO INC CARRYING ON BUSINESS AS A D METRO