Patent ID: 7300813

Claim:
A method for manufacturing a micro-machined switch using pull-up type contact pad, comprising: the first step of laminating the both surfaces of silicon substrate ( 21 ) with silicon oxide or silicon nitride films ( 22 ) to prevent the loss of signal to the interior of the silicon substrate ( 21 ); the second step of metal wiring process for forming signal transmitting lines ( 23 ) and pull-up electrode ( 24 ) on the underside of the substrate ( 21 ) so treated; the third step of laminating a dielectric film ( 25 ) on said electrode ( 24 ) to generate the electrostatic force for driving contact pad ( 27 ) and of etching; the fourth step of forming contact pad ( 27 ) and guide-poles ( 26 ) for realizing stable operation of the contact pad ( 27 ), partially by using a plating process; the fifth step of forming a groove in a cover glass plate ( 28 ) for the purpose of preventing the loss of said contact pad ( 27 ) and maintaining a constant distance between the contact pad ( 27 ) and the signal transmitting lines ( 23 ); the sixth step of forming extended transmission lines ( 29 ) for measurement and application of DC voltage on the cover glass plate ( 28 ) through metal wiring process; the seventh step of joining the glass plate ( 28 ) with the silicon substrate ( 21 ) by using bi-pole joining process after aligning the patterns contained between the glass plate and the silicon substrate; and the eighth step of etching the silicon substrate to expose the pads or lines for measurement and for application of DC voltage for the purpose of measurement and application of DC voltage.