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Surface acoustic wave type sensing apparatus of touching control panel

A touch panel, surface acoustic wave technology, applied in the input/output process of data processing, instruments, electrical digital data processing and other directions, can solve problems such as unsatisfactory sensing

Active Publication Date: 2010-06-02
EGALAX EMPIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the aforementioned surface acoustic wave touch panel with reflectors arranged sparsely and densely still has its disadvantages. Because the reflectors at the front of each reflector row are sparsely arranged, some input contact positions have gaps between The inclination between the vibration waves reflected by two adjacent reflectors, so the position of the input contacts is less ideal for sensing

Method used

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  • Surface acoustic wave type sensing apparatus of touching control panel
  • Surface acoustic wave type sensing apparatus of touching control panel
  • Surface acoustic wave type sensing apparatus of touching control panel

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Embodiment Construction

[0028] The present invention is a sensing device of a surface acoustic wave touch panel, which will be described in detail below with the help of preferred embodiments and accompanying drawings.

[0029] Figure 2AShown is a schematic structural view of a surface acoustic wave touch panel including the sensing device of the present invention. As shown in the figure, the touch panel 20 is substantially a rectangular device composed of a horizontal axis and a vertical axis, and has a screen area 21 and a reflective area 22, and the sensing device 23 is arranged on the reflective area 22 Down. Sensing device 23 includes a first and second horizontal axis transducer 24a and 24b and a first and second vertical axis transducer 25a and 25b, and includes a set of first and second vertical axis reflection units 26a and 26b and a group of first and second horizontal axis reflection units 27a and 27b, wherein these groups of reflection units 26a, 26b, 27a and 27b stand in a row along t...

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Abstract

The invention provides a sensing device of an SAW-type (surface acoustic wave) touch panel, which is in novel reflector distribution. The reflector distribution which is different from the conventional distribution that varies from sparse to dense gradually is in the form of being spaced at equal intervals but including a plurality of sub-reflectors, so that when a vibration wave enters a row of reflectors on the relatively rear side, the reflected vibration wave quantity can still be equal to the reflected vibration wave quantity of a vibration wave entering a row of reflectors on the relatively front side, thereby avoiding the problem caused by the distribution form of the widely-known reflector row.

Description

technical field [0001] The present invention relates to the field of touch panels, and more particularly to a surface acoustic wave (SAW) touch panel sensing device in which the reflectors in the reflector row are arranged in a gradually denser pattern. Background technique [0002] A surface acoustic wave (SAW) touch panel is a touch panel that senses a vibration signal at a destination to know the location of a touch input on a touch screen, which is Using a transducer containing a piezoelectric material to convert an electric energy signal into the vibration wave signal, and then sensing whether the vibration wave signal is blocked by the touch input and cannot be received when it travels on the touch screen way for it. [0003] Figure 1A Shown is a schematic structure of a traditional surface acoustic wave touch panel. like Figure 1A As shown, the touch panel 10 has a screen area 11 and a reflective area 12, a sensing device 13 is provided in the reflective area 12, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/043
Inventor 叶尚泰谢腾为
Owner EGALAX EMPIA TECH INC