Capacitance data input device with mechanical touch sense

Abstract

The invention provides a capacitance data input device with mechanical touch sense, for example a keyboard. The device comprises a mechanical part and a capsense part, wherein the mechanical part is positioned above the capsense part; keys in the mechanical part is in one-to-one correspondence with the keys in the capsense part, thereby enabling the keys which mechanically operates the mechanical part to trigger the corresponding keys of the capsense part. The invention can provide traditional mechanical touch sense for a user so as to help the user to rapidly and accurately location, improve the operation efficiency, avoid the misoperation; and the mechanical part can only carry out mechanical feedback function and can be disassembled without carrying out electrical function, thereby enabling the data input device of the invention to be easy to clean and sterilize, and to be capable of being manufactured to be thin and reliable.

Description

technical field [0001] The present invention relates generally to data entry devices, and more particularly to capacitive keypads. Background technique [0002] At present, capacitive touch sensing technology is widely used in various electronic products, such as notebook computers, mobile phones, home appliances such as induction cookers, and input devices (such as keyboards) of medical equipment. like figure 1 As shown, it schematically shows the principle of capacitive touch-sensing keys. Since the human body can be regarded as a human body capacitance, when the finger touches the panel, the circuit capacitance changes, and finally it is indicated by the resulting voltage level change. The corresponding key is touched. Input devices using capacitive touch-sensing technology do not need to have moving parts and are thus reliable, durable, and low-power-consuming. In addition, since such an input device adopts an integrated panel design without gaps, it is not susceptibl...

AI Technical Summary

Problems solved by technology

However, the above-mentioned shortcomings of the capacitive sensing keyboard make its low-efficiency operation or misoperation during emergency rescue may even threaten the patient's life.

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