Patent ID: 7183634

Claim:
A PCB type tactile switch comprising: an insulating member ( 100 ) made of nonconducting substances in the shape of a thin plate; an interval maintaining member ( 200 ) provided on the insulating member ( 100 ); a lower pattern ( 300 ) made of conducting material and provided under the insulating member ( 100 ); a solder mask ( 400 ) covering a bottom surface of the lower pattern ( 300 ) with nonconducting substances, except for bottom parts of the lower pattern ( 300 ) which require soldering; a groove ( 500 ) formed by perforating central parts of the interval maintaining member ( 200 ) and the insulating member ( 100 ) so that a top surface of the lower pattern ( 300 ) can be exposed; an upper conducting coat ( 600 ) applied on top of the interval maintaining member ( 200 ) and the groove ( 500 ) for electric contact; a lower conducting coat ( 610 ) applied under the lower pattern ( 300 ) for electric contact; a short circuit part of electricity ( 700 ) formed by cutting off the upper conducting coat ( 600 ) and the interval maintaining member ( 200 ) surrounding the groove ( 500 ), so that an internal part and an external part divided by the short circuit part ( 700 ) can be electrically short-circuited; a metal dome ( 800 ) made of elastic and conducting metallic material and having a convex center and a circumferential end which secures around the short circuit part ( 700 ), wherein the convex center is pressed by an external pressure to come into contact with the lower pattern ( 300 ) through the groove ( 500 ); and a cover layer ( 900 ) adhered on a top surface of the upper conducting coat ( 600 ) to prevent the separation of the metal dome ( 800 ).