Electrostatic capacitive film touch keyboard

Abstract

The invention discloses a static-capacitive film touch keyboard which is simple in process, low in production cost, low in wear rate and good in contact stability. The static-capacitive film touch keyboard comprises a capacitive-type detection chip and a static-capacitive film circuit board, wherein the static-capacitive film circuit board comprises a first film circuit layer (1), a conductive insulation layer (2), a film spacer layer (3), and a second film circuit layer or a PCB layer (4) which are sequentially arranged; a first matrix circuit and a plurality of upper contacts (10) are arranged on the lower surface of the first film circuit layer (1), a second matrix circuit and a plurality of lower contacts (40) are arranged on the upper surface of the second film circuit layer or the PCB layer (4), through holes (30) ensuring the formation for capacitor units, of the plurality of upper contacts (10), the plurality of lower contacts (40) and the film spacer layer (3) are formed in the film spacer layer (3); both of the first matrix circuit and the second matrix circuit are connected with the capacitive-type detection chip.

Description

technical field [0001] The invention relates to an electrostatic capacitive film touch keyboard. Background technique [0002] A computer keyboard is an instruction and data input device used to operate equipment. According to the working principle and button mode of the keyboard, it can be divided into four types: 1. Mechanical keyboard (Mechanical) uses a similar metal contact switch. The working principle is to make the contacts conduct or disconnect, with simple process and high noise. , Easy maintenance features; 2, conductive rubber keyboard (Conductive Rubber) The contact structure is connected by conductive rubber. There is a layer of protruding charged conductive rubber inside the keyboard, and each key corresponds to a protuberance, which connects the contacts below when pressed. This type of keyboard is a transitional product from a mechanical keyboard to a membrane keyboard in the market; 3. Plastic Membrane keyboard (Membrane) The keyboard is divided into thre...

AI Technical Summary

Problems solved by technology

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. In the prior art, the vibration function is often used to realize the touch feedback, that is, when the user touches, the button is turned on. , the host software drives the motor to generate a vibration effect to notify the user, but this method consumes power and the effect is unnatural; it can also use the elastic characteristics of the keycap itself to release it, but obviously its release force is far from enough to produce a Force feedback effect clearly perceived by the human body

In addition, with the development of computers and the updating and upgrading of computer software, using computer games for entertainment has become an indispensable item for people to use computers. Now in most computer games, there are often situations where game characters walk and fight In this way, the player is required to hold down other keys such as fighting while holding down the direction keys. The arrangement of keys on computer keyboards in the prior art adopts a matrix arrangement, and when multiple keys are pressed at the same time, In the case of the situation, it is easy to conflict, which brings great inconvenience to the user

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