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Sensor Electrode Patterns Exhibiting Reducd RC Settling Times

IP.com Disclosure Number: IPCOM000226469D
Publication Date: 2013-Apr-04
Document File: 3 page(s) / 119K

Publishing Venue

The IP.com Prior Art Database

Related People

David Hoch: INVENTOR

Abstract

The following invention describes a single sided sensor electrode pattern having multiple crossings between each receiver electrode and each transmitter electrode. The number of “necks” is increased from 1 to 2 (or more) which can reduce the RC settling time, e.g., by half. Further, by providing enlarged receiver electrodes the proximity performance of the sensor maybe increased.

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Sensor Electrode Patterns Exhibiting Reduced RC Settling Times

Sensor Electrode Patterns Having Reduced RC Settling Times


1. Inventor: David Hoch


2. Synaptics Incorporated, Santa Clara, CA, USA


3. Short Summary

The following invention describes a single sided sensor electrode pattern having multiple crossings between each receiver electrode and each transmitter electrode. The number of "necks" is increased from 1 to 2 (or more) which can reduce the RC settling time, e.g., by half. Further, by providing enlarged receiver electrodes the proximity performance of the sensor maybe increased.


4. Some Problems Solved

The following sensor patterns provide reduced RC settling times and/or increased proximity performance by increasing the number of intersections between the transmitter and receiver electrodes and by increasing the relative size of the receiver electrodes.


5. General Description

Copyright © 2013 Synaptics Incorporated, All Rights Reserved.

David Hoch

Page: 1 of 3

Information contained in this publication is provided as-is, with no express or implied warranties, including any warranty of merchantability, fitness for any particular purpose, or non-infringement. Synaptics Incorporated assumes no liability whatsoever for any use of the information contained herein, including any liability for intellectual property infringement. This publication conveys no express or implied licenses to any intellectual property rights belonging to Synaptics or any other party. Synaptics may, from time to time and at its sole option, update the information contained herein without notice.


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Sensor Electrode Patterns Exhibiting Reduced RC Settling Times

David Hoch

Figure 1. Sensor electrode pattern having reduced RC settling times.

Figure 1 shows a pixel comprising transmitter electrodes (e.g., dark red TX1 electrodes), receiver electrodes (e.g., blue RX1 electrodes), and floating electrodes (GREEN) disposed on a single side of a substrate. The receiver electrodes cross each transmitter electrode and jumpers are provided (but not shown) for connecting the different segments of each receiver electrode together. By increasing the number of necks vertically along the transmitter, the RC settling time of the transmitter electrodes can be reduced. For example, the RC settling time for the transmitter electrode may be cut in half by providing two necks vertically along each column of dia...