Electronic apparatus equipped on a flexible substratum

An electronic apparatus comprising a flexible substratum carrying a wiring pattern formed thereon;

• a display unit formed directly on one end of the flexible substratum;
• key contact patterns formed directly on the other end portion of the flexible substratum;
• a semiconductor circuit unit including at least a computation function circuit formed directly on the middle portion of the flexible substratum and protected from the environment with a resinous material;
• and a keyboard unit disposed on the flexible substratum, said keyboard unit containing a plurality of key contacts which are adapted to make contact with the key contact patterns.

An electronic apparatus comprising a housing containing a body provided with a cover rotatable about a shaft;

• a flexible mother board carrying a wiring pattern formed thereon, said flexible mother board being disposed in the housing in a manner such that a portion of the mother board is positioned in the cover of the casing;
• a display unit formed directly on the mother board in the cover of the housing;
• a flexible daughter board connected to the mother board;
• a semiconductor circuit unit including at least a computation function circuit, formed directly on the daughter board and protected from the environment with a resinous material and a keyboard unit disposed on the mother board in the body of the housing.

In an electronic calculator comprising a housing consisting of an upper cabinet and a lower cabinet, said upper and lower cabinets being movably connected to each other through a hinge means, a flexible substratum disposed in both the upper cabinet and the lower cabinet for carrying electronic components for said electronic calculator in said upper and lower cabinets, the electronic components containing a display unit, a computation circuit unit and a keyboard unit, wherein the electronic calculator is in an operating state when the upper cabinet is moved to an open position from the lower cabinet and the electronic calculator is in a nonoperating state when the upper cabinet is closed on the lower cabinet, the improvement which comprises providing collapsible interconnection conductors formed directly in a printed pattern on the flexible substratum for providing flexibility for the interconnections disposed at the junction of the upper cabinet and the lower cabinet, thereby providing communication between the electronic elements disposed in the upper cabinet and the electronic elements disposed in the lower cabinet when the position of the upper cabinet is changed relative to the position of the lower cabinet, and means for securing said collapsible interconnection conductors on said hinge means, whereby flexibility is provided for the calculator housing through said hinge means and for the interconnection about said hinge means through said collapsible conductors.