Ultra-thin touch-type keyboard keys and key control method thereof

Abstract

The invention discloses and provides an ultra-thin touch-type keyboard key that has simple structure, does not need to be tapped, can not touch the key by mistake, can realize blind typing, and has accurate input. The ultra-thin touch keyboard keys include a circuit substrate, an adhesive layer, a key touch panel and a control unit electrically connected to the circuit substrate, which are sequentially bonded from bottom to top, and the key touch panel is provided with several A number of sliding areas physically divided by the guardrail and key tops located in the sliding area, the top of the key top is provided with a marking part, and the circuit substrate is provided with a number of capacitive touch sensors for sensing finger contact positions. unit, several capacitive touch units form an electrode matrix and are electrically connected to the control unit, and the control unit is set to several spatial coordinate regions according to the number of the sliding regions, and the control unit receives A corresponding command is issued when the coordinate slide track in the space coordinate area.

Description

technical field [0001] The invention relates to an ultra-thin touch-type keyboard key and a key control method thereof. Background technique [0002] In recent years, capacitive touch buttons and capacitive touch screens have been more and more widely used due to their simple structure, thin thickness, light weight, high reliability, and low failure rate. With the continuous development of this technology, especially the continuous decline in the cost of related components, capacitive touch keys will gradually replace traditional mechanical keys and resistive keys. [0003] The basic principle of the capacitive touch button is that the touch of the human body (finger) changes the capacitance value of the corresponding touched position to the ground. The chip will detect this capacitance change and process the corresponding analog and digital signals. , to determine whether the button is touched (pressed), and correspondingly generate different button messages and send them ...

AI Technical Summary

Problems solved by technology

At present, the existing capacitive keyboard is a keyboard based on a capacitive switch. The principle is to change the distance between the electrodes by pressing the button to produce a change in capacitance, and temporarily form the condition for the shock pulse to pass through. This switch is a non-contact non-contact type. Yes, the wear rate is extremely small or even negligible, and there is no hidden danger of poor contact, but this structure is not only complicated in process and high in production cost, but also brings about the problem of how to make the user feel the touch or press. Therefore, the existing In the technology, the vibration function is often used to realize the touch feedback, that is, when the user touches the key, the key is turned on, and the host software drives the motor to generate a vibration effect to notify the user. This method consumes power and has an unnatural effect, or uses the keycap itself. The elastic property releases itself, but obviously its release force is far from enough to produce a force feedback effect that can be clearly perceived by the human body, and requires a certain stroke space, resulting in a relatively high overall thickness of the keyboard. Touching the keys causes input errors, which cannot meet the needs of touch typing

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