Membrane switch and method of manufacturing the same

A method of manufacturing a membrane switch, the method comprising:

• coating an upper surface and a lower surface of an isolation layer, exclusive of positions of holes within the isolation layer, with hot melt glue;
• adhering and bonding an undersurface of an upper membrane and an upper surface of a lower membrane to the upper surface and the lower surface of the isolation layer, respectively, via the hot melt glue so that (i) the isolation layer is between the upper membrane and the lower membrane, (ii) upper conductive dots and upper conductive traces connecting the upper conductive dots printed on the undersurface of the upper membrane correspond with lower conductive dots and lower conductive traces printed on the upper surface of the lower membrane, and (iii) the holes within the isolation layer are at positions corresponding to the upper conductive dots and the lower conductive dots;
• and
• treating the upper membrane and the lower membrane by hot roll-press after being bonded to the isolation layer via the hot melt glue to form the membrane switch.