Position detection device and method thereof

Abstract

The invention provides a position detection device and method thereof. A position detection device comprises a plurality of intersecting regions which consist of a plurality of conductive strips to form a plurality of intersecting regions, wherein a depressed intersecting region is formed when depressed conductive strips electrically contact with each other. The contact position and the total impedance can be determined based on the depressed intersecting region, wherein the total impedance is the shunt impedance of all the depressed intersecting regions.

Description

[0001] This application is a divisional application of the invention patent application with the application number 201010152216.1 titled "Device and Method for Position Detection". The filing date of the original application is April 16, 2010. technical field [0002] The present invention relates to a device and method for position detection, in particular to a device and method for pressure-touch position detection. Background technique [0003] In U.S. Patent Publication No. US2007 / 0198926, Jouget et al. disclosed a device for pressure-contact position detection, which includes an upper electrode layer and a lower electrode layer. The upper and lower electrode layers respectively include a plurality of parallel arrays in different directions. Wires, and insulating particles (spacer) are distributed between the upper and lower layers, so as to separate the upper and lower electrode layers. Therefore, when the upper electrode layer is pressed down, part of the wires of the...

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Problems solved by technology

[0004] However if figure 1 As shown, when a finger touches, it may cause a group of overlapping points to be pressed at the same time. During the detection process, the signal of the lower electrode layer wire that will be detected later will become smaller. Therefore, it is necessary to target phases at different positions. Different comparison values ​​are given to overlapping points, so that it can still distinguish whether it is pressed or not when the signal is small

However, such a solution may still be inaccurate because there are too many overlapping points that have been touched before. Obviously, the establishment and storage of the comparison values ​​of each overlapping point need to spend a lot of cost, but it cannot guarantee accuracy. Spend

In addition, when the resolution requirement is relatively high, the density of the wire must be increased, and the detection frequency must be reduced relatively.

[0005] This shows that above-mentioned prior art obviously has inconvenience and defective, and extremely waits to be further improved

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure and method for general products and methods to solve the above-mentioned problems. This is obviously a problem that relevant industry players are eager to solve

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