Capacitive finger navigation module

Abstract

The present disclosure provides a capacitive finger navigation module including a contact layer, a first electrode layer, a second electrode layer and an elastic material layer. The contact layer is configured for providing a move operation and a press operation of a finger thereon. The first electrode layer includes at least one first electrode. The second electrode layer includes a plurality of second electrodes and a plurality of third electrodes. The elastic material layer is disposed between the first electrode layer and the second electrode layer, and configured to form a deformation in the press operation so as to change a distance between the first electrode layer and the second electrode layer, wherein in the press operation, the sensing signals of the first electrode affected by the press operation change, and in the movement operation, the sensing signals of the third electrode affected by the movement operation change.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of July 03, 2014, an application number of 201410315533.9, and an invention title of “Capacitive Finger Navigation Module and Its Manufacturing Method”. technical field [0002] The invention relates to a capacitive finger navigation module, in particular to a finger navigation module with two modes of pressure detection and finger displacement detection and a manufacturing method thereof. Background technique [0003] Known finger navigation modules mostly use finger displacement detection, that is, determine the moving distance of the cursor according to the displacement of the finger on the detection surface of the finger navigation module, for example, if the finger is on the detection surface of the navigation module If the surface moves a distance of three pixels, the cursor of the controlled screen moves relative to the display surface for three unit distances. ...

AI Technical Summary

Problems solved by technology

Therefore, the finger navigation module preferably has a smaller detection surface to be suitable for portable electronic devices. However, when the cursor position needs to be moved significantly, it is often limited by the area of ​​the detection surface of the finger navigation module. It is necessary to keep the finger moving back and forth on the detection surface in order to achieve the purpose of continuously moving the cursor, thus causing inconvenience to the user during operation

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