Patent ID: 8525058

Claim:
A dome switch comprising: a dome; a flex circuit comprising a dome region and an extension, the dome region being configured to receive the dome; a stiffener attached to the flex circuit extension to provide structural support; a first spacer attached to a surface of the flex circuit, wherein a first portion of the first spacer extends around a periphery of the dome and a second portion of the first spacer extends along at least a portion of the flex circuit extension, the second portion comprising side walls separated from one another and defining a gap; a film layer applied over the first spacer and the dome, the film layer extending across the gap between the side walls to define a first channel providing a path for expelling air from under the dome when the dome is depressed, the first channel extending along a length of the extension to the stiffener; at least one sheet between the first spacer and the film laver; and at least one additional spacer disposed between each sheet and the film laver, the at least one sheet, the at least one additional spacer, and the film layer forming at least one additional channel.