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Reinforced-connection-for-a-electronic-circuit-members-and-method-for-constructing-therefor

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Reinforced connection for a electronic circuit members and method for constructing therefor

Details

Inventors: Kobayashi, Kenzo; Tachibana, Hideto;
Assignee: The Furukawa Electric Company, Ltd. (Tokyo, JP); Sony Chemicals Corporation (Tokyo, JP)
Primary Examiner: Abrams; Neil
Assistant Examiner:
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt

For electronic circuit members including a high density fine pattern electrode and a flexible printed circuit, a reinforced connecting part includes a reinforcing fastener which is a substantially cylindrical section shaped element having edges defining an axial slit clamping the circuit members. The reinforcing fastener is formed of an alloy having both superelastic and shape memory characteristics at a temperature above the Martensite transformation temperature of the alloy. The alloy is brought to a temperature above the Martensite transformation temperature after the slit is opened at a temperature below the Martensite temperature of the alloy and the electronic circuit members are attached via the slit. The circuit members can thus be fastened with a substantially constant force over time due to the superelastic and shape memory characteristics of the alloy.

DETAILED DESCRIPTION The present invention provides a method, wherein the miniaturization and the thinning of an LCD, etc.
are possible and the improvement in the reliability of connection between the ITO and the FPC also becomes possible.
Namely, onto said connection of electronic circuit members comprising an ITO, a chemical connector and an FPC, or an ITO and FPC, is positioned a reinforcing fastener which comprises a superelastic shape memory alloy and which is machined into a circular shape, elliptic shape, flattened elliptic shape or preferably horseshoe shape in section with a slit in the axial direction The connection part is held insertedly in the slit through linear contact by means of the tightening force generating through the recovery in shape of said fastener, and a tightening force can become a uniform holding force through an additional superelastic effect.

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