Compact electronic device

DETAILED DESCRIPTION It is, therefore, an object of the present invention to provide a compact electronic device having a new and improved key switch structure which can be easily manufactured and can be formed thin as compared to a conventional key switch structure even when the key switch is of an anisotropically electrical type.
According to the present invention, there is provided a compact electronic device having a key switch structure comprising: a first insulating cover means having on one surface thereof a first conductive layer and an anisotropically electrical conductive layer printed on the first conductive layer; a second insulating cover means having one surface arranged at a side opposite to the anisotropically electrical conductive layer on the first insulating cover means; and a second conductive layer sandwiched between the anisotropically electrical conductive layer and the second insulating cover means, at least one of said first and second insulating cover means having flexibility, and a depression force being selectively exerted from the other surface side of the flexible cover means through the anisotropically electrical conductive layer so as to form a conductive path between said first and second conductive layers.