| 主权项 |
1. A keyboard, comprising:
plural keys; a membrane key switch module disposed under the plural keys, wherein when the membrane key switch module is depressed by the plural keys, plural key signals are correspondingly generated, wherein the membrane key switch module comprises:
an upper wiring plate comprising plural upper contacts, wherein the plural upper contacts are disposed on a bottom surface of the upper wiring plate;a lower wiring plate comprising plural lower contacts, wherein the plural lower contacts are disposed on a top surface of the lower wiring plate, and the plural lower contacts are disposed under the corresponding upper contacts, wherein when the plural lower contacts and the corresponding upper contacts are contacted with each other, the corresponding key signals are generated; anda spacer layer arranged between the upper wiring plate and the lower wiring plate, wherein the plural upper contacts and the plural lower contacts are separated from each other by the spacer layer; and plural diodes disposed on the bottom surface of the upper wiring plate, wherein each diode is electrically connected with one corresponding upper contact, so that a current is allowed to pass through the corresponding upper contact in one direction. |
