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High transparency touch screen

A touch sensor, transparent conductive layer technology, applied in instruments, coatings, calculations, etc., can solve problems such as changes and changes in electrical signals

Inactive Publication Date: 2006-04-26
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A capacitively connected circuit changes the impedance, which causes a change in the detected electrical signal

Method used

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Examples

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Embodiment Construction

[0015] In the following description of illustrated embodiments, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of example various embodiments in which the invention may be practiced. It is to be understood that the embodiments may be utilized and structural changes may be made in the embodiments without departing from the scope of the present invention.

[0016] The present invention relates to methods and systems for utilizing transparent conductive elements to enhance light transmission through a touch sensor. For example, resistive and capacitive touch detection methods typically include transparent conductors used as active elements of the touch sensor device. The most widely used transparent conductive oxide for these applications is indium tin oxide (ITO), however other metal oxides such as antimony tin oxide (ATO) and tin oxide (TO), etc. may also be used. Metal / metal oxide stacks can also be used, for example with...

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Abstract

A touch sensor employs one or more transparent conductors including a random pattern of voids. These voids are arranged according to a random pattern that maintains the electrical continuity of the transparent conductive layer. Touch sensors are fabricated by depositing a layer of transparent conductor and forming voids in the transparent conductor. The sheet resistance of selected conductive layers can be obtained by forming voids, as well as increasing light transmission through the touch sensor.

Description

technical field [0001] The present invention generally relates to touch sensors. Background technique [0002] Touch screens provide a simple, intuitive interface to a computer or other data processing device. And the user can transmit information through the touch screen by touching icons on the screen or writing or drawing on the screen instead of using a keyboard to input data. Touch screens are used in a variety of information processing applications and have found particular utility in interactive systems that also include computer-controlled displays. Touch screens are used in applications such as mobile phones, personal data assistants (PDAs), handheld or portable computers, and information kiosks, automated teller machines, and electronic point-of-sale terminals placed in public places. [0003] Various technologies have been developed to detect touch, including capacitive, resistive, acoustic and infrared technologies. Resistive technology generally detects touch...

Claims

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Application Information

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IPC IPC(8): G06F3/033G02B1/11G06F3/041
CPCG02B1/116G06F3/044G06F3/045G02F1/13338G06F3/0412G06F2203/04103G06F3/041
Inventor 詹姆斯·T·理查德威廉·K·史密斯
Owner 3M INNOVATIVE PROPERTIES CO
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