| 摘要 |
1,261,340. Semi-conductor devices. MATSUSHITA ELECTRONICS CORP. 30 April, 1970 [7 May, 1969], No. 20886/70. Heading H1K. Pressure is applied to a pressure-sensitive device by means of a pressure member which is influenced by the magnetic flux generated by a permanent magnet so that displacement of the permanent magnet changes the pressure applied to the device. As shown, a stylus 3 is supported in contact with a semi-conductor device 1 by means of a diaphragm or beam 5 and carries an iron member 4. A permanent magnet 7 is suspended above the stylus, movement of the magnet by knob 10 against the force of a return spring 11 decreasing the magnetic attraction and thus increasing the stylus pressure. The semi-conductor device may be a Mo or W Schottky barrier on a Si substrate, or a PN junction device containing deep level impurities. The semi-conductor device, the stylus and its mounting may be enclosed in a gas-tight housing of glass, ceramic, or non-magnetic metal. The stylus may be of sapphire or may be of ferrite, the iron member 4 being omitted. |
