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Corrosion mitigation for metal traces

A technology of metal traces and traces, which is applied in the field of manufacturing touch sensors to reduce moisture damage, and can solve problems such as moisture damage

Active Publication Date: 2015-05-06
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional methods are susceptible to moisture damage

Method used

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  • Corrosion mitigation for metal traces
  • Corrosion mitigation for metal traces
  • Corrosion mitigation for metal traces

Examples

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Embodiment Construction

[0017] In the following description of the disclosure and examples, reference is made to the accompanying drawings, in which are shown by way of illustration specific examples that may be practiced. It is to be understood that other examples may be practiced and structural changes may be made without departing from the scope of the present disclosure.

[0018] The present invention relates to a method for manufacturing a touch sensor having one or more guard traces to reduce the effects of moisture damage. The method may include forming one or more guard traces between an edge of the touch sensor and metal traces that route the drive and sense lines to the bond pads. The one or more guard traces can be decoupled from the drive and sense lines and can protect the internal metal traces from moisture damage. The one or more guard traces may be formed from a metal such as copper. In some examples, the ends of the one or more guard traces may be grounded through copper. In other...

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Abstract

Processes for manufacturing touch sensors with one or more guard traces to reduce the effect of moisture damage are provided. One example process can include forming one or more guard traces between an edge of the touch sensor and the metal traces that route the drive and sense lines to bond pads. The one or more guard traces can be uncoupled from the drive lines and sense lines to protect the inner metal traces from moisture damage. In some examples, ends of the one or more guard traces can be coupled to ground by copper. In other examples, ends of the one or more guard traces can be coupled to ground by indium tin oxide or the one or more guard traces can be coupled to ground by a strip of indium tin oxide. In yet other examples, the guard trace can be floating (e.g., not coupled to ground).

Description

technical field [0001] The present invention relates generally to touch sensors, and more particularly to methods for fabricating touch sensors to reduce moisture damage. Background technique [0002] Many types of input devices are currently available for performing operations in computing systems, such as buttons or keys, mice, trackballs, joysticks, touch sensor panels, touch screens, and the like. In particular, touch-sensitive devices such as touch screens are becoming more and more popular due to their convenience and flexibility in operation. A touch-sensitive device may include a touch sensor panel, which may be a transparent panel with a touch-sensitive surface, and a display device, such as a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display, which may be partially or completely Positioned behind the panel such that the touch-sensitive surface can cover at least a portion of the viewable area of ​​the display device. Touch-sensitive d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044G06F3/041
CPCG06F3/0416G06F3/044Y10T29/49105G06F3/0446G06F3/04164G06F3/041H01H1/58H01H11/04G06F2203/04103G06F2203/04107
Inventor S·莫哈帕特拉康盛球仲正中
Owner APPLE INC
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