Switch membrane and keyboard containing same

Abstract

The invention discloses a switch membrane and a keyboard containing the same. The switch membrane includes a plurality of key switches. Each key switch is corresponding to each of keycaps arranged above the key switch. Each of the key switches comprises an upper membrane circuit layer, a lower membrane circuit layer and a plurality of isolating columns. The upper membrane circuit layer comprises a plurality of top electrodes. The lower membrane circuit layer comprises a plurality of bottom electrodes. The isolating columns are arranged between the upper membrane circuit layer and the lower membrane circuit layer, so that a preset distance is preserved between the top electrodes and the bottom electrodes and the top electrodes and the bottom electrodes are not communicated with each other. When the keycaps are pressed down and the upper membrane circuit layer is deformed to extend out of the preset distance, the top electrodes and the bottom electrodes are contacted with each other at one cross point projected by at least one top electrode and one bottom electrode among cross points projected by a plurality of the top electrodes and the bottom electrodes, and the key switches are switched on. The switch film is provided with a plurality of electric-on points, so that key with the switch membrane can be truly triggered.

Description

technical field [0001] The present invention relates to a switch film layer and a keyboard comprising the switch film layer, and in particular to a switch film layer with a plurality of conductive points. Background technique [0002] see figure 1 , figure 1 It is a partial sectional view showing the keyboard 1 of the prior art. The keyboard 1 includes a plurality of keys 10 . At figure 1 In , only one button 10 is shown as a representative. The button 10 includes a bottom plate 11 , a switch film layer 12 and a panel 14 . [0003] Panel 14 has a top surface 142 and a bottom surface 144 . The panel 14 also includes a plurality of keycap sections 146 protruding upward. At figure 1 , only one keycap block 146 is shown as a representative. The keycap block 146 is used to provide the user to press and input operation instructions, such as various symbols, characters, numbers, font case and function switching, and the like. [0004] The switch membrane layer 12 is dispo...

AI Technical Summary

Problems solved by technology

Therefore, if the user presses the edge of the key cap block 146, the upper electrode block 122 and the lower electrode block 126 may not be in contact or may be in poor contact due to the obstruction of the convex body 128, resulting in that the corresponding key 10 cannot be triggered.

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