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Capacitive touch sensor with dummy jumpers

A jumper-wire, capacitive technology for capacitive touch sensors that slows development and adoption

Active Publication Date: 2019-01-11
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These challenges have generally slowed down the development and adoption of such devices in the market

Method used

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  • Capacitive touch sensor with dummy jumpers
  • Capacitive touch sensor with dummy jumpers
  • Capacitive touch sensor with dummy jumpers

Examples

Experimental program
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example 1

[0096] In one non-limiting example embodiment, the electrode matrix includes column electrode films laminated to row electrode films. The two electrode films were bonded together with a 50 μm thick, optically clear, acrylic, pressure sensitive adhesive film.

[0097] Each electrode film consists of a 100 μm thick, optically clear, biaxially oriented poly(ethylene terephthalate) film coated with an approximately 1.5 μm thick layer of copper that is chemically treated to minimize light exposure. reflections, which are then photolithographically formed to form an array of column or row electrodes. Alternatively, a coating may be deposited to reduce optical reflection.

[0098] In this example, the column electrode film is approximately rectangular and measures 2000 x 1180 mm. It consists of a 300 x 1 column array of electrodes which together occupy a rectangular sensing area of ​​1920 x 1092 mm. Each column electrode occupies a rectangular area of ​​approximately 4.2 x 1092 mm...

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PUM

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Abstract

An electrode matrix for capacitive touch sensing is provided. The electrode matrix may include a plurality of electrodes separated by gaps. Each electrode may comprise a plurality of spaced apart conductors electrically connected at opposite ends by respective securing structures. The conductors of each electrode may be electrically bridged at intervals by a plurality of jumpers. The electrode matrix may further include a plurality of dummy jumpers located within the gaps and configured to be non-conductive across their entire lengths.

Description

technical field [0001] The present application relates to capacitive touch sensors, and in particular, to capacitive touch sensors with dummy jumpers for use in capacitive touch-sensitive display devices. Background technique [0002] In a capacitive touch-sensitive display device, an image may be displayed while simultaneously detecting a finger from a user or other input device. A capacitive touch-sensitive display device may include a touch surface, a display stack, such as a liquid crystal display (LCD) stack, and a matrix of column and row electrodes therebetween, and the matrix is ​​configured to be based on a change in capacitance (e.g., column A change in capacitance between a row and a row, or a change in capacitance between a row or column and ground) to detect touch input. This change in capacitance can be used to determine the column-row pair closest to the touch input, as well as determine how off-center the touch input is relative to that column-row pair. In ...

Claims

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Application Information

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IPC IPC(8): G06F3/044
CPCG06F3/0412G06F2203/04112G06F3/0445G06F3/0446G06F3/0448
Inventor J·维斯修斯S·M·唐纳利J·D·威尔森
Owner MICROSOFT TECH LICENSING LLC