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    • 4. 发明专利
    • DUAL PYROELECTRIC SENSOR
    • JPH07174624A
    • 1995-07-14
    • JP34275693
    • 1993-12-16
    • KUREHA CHEMICAL IND CO LTD
    • NAGAI AISAKU
    • G01J1/02G01J5/02G01J5/34
    • PURPOSE:To equally maintain the effective light receiving areas of paired elements even when the positions of electrode patterns are deviated from each other by forming the electrode main body on one surface of a pyroelectric body larger than that on another surface in one unit pyroelectric element of the paired elements and forming the electrode main body on one surface of a pyroelectric body smaller than that on the another surface in another unit pyroelectric element. CONSTITUTION:The dual pyroelectric sensor 10 is provided with a pair of electrodes 2 and 3 on the surface of a sheet-like pyroelectric body 1 and another pair of electrodes 4 and 5 on the rear surface of the body 1 and the main bodies 2 and 5 of the electrodes 2 and 5 respectively have protruding sections 2'a and 5'a around their overlapping sections upon the main bodies 4a and 3a of the electrodes 4 and 3 facing each other on both sides of the body l and are formed smaller than the main bodies 4a and 3a. In addition, the leading out sections 3b and 4b of the electrodes 3 and 4 are constituted so that they can be led out from the main bodies 3a and 4a in the opposite directions substantially. Therefore, even when the pattern of the electrodes 2 and 4 is slightly deviated in position from that of the electrodes 3 and 5, the offsetting performance of vibration variation or temperature variation or in-phase noise of background radiation, etc., can be improved.
    • 7. 发明专利
    • INPUT DEVICE FOR TRANSPARENT PIEZOELECTRIC COORDINATE
    • JPS5692634A
    • 1981-07-27
    • JP16943079
    • 1979-12-27
    • KUREHA CHEMICAL IND CO LTD
    • MURAYAMA NAOHIROYOSHIDA MASABUMINAGAI AISAKU
    • G06F3/047H03K17/96
    • PURPOSE:To enable to indicate the coordinates on a display device easily, by forming the electrode of piezoelectric macromolecular film with thin film electrode layer at the both sides of single or a plurality of layers, by transparent conductor layer, to constitute panel elements for coordinate input. CONSTITUTION:Electrodes consisting of a plurality of thin film conductors such as 3Q1...3i1... are coated on the upper surface of a transparent macromolecular film 2 in a piezoelectric coordinate input panel element 1. Further, a thin film conductor electrode 4 of a large area being opposite electrode is coated on the lower surface. The electrode 4 is coupled with the ground 5, and each electrode such as 3i1 is connected to an output side device 7 via an impedance conversion device such as FET6i1. Further, on the electrodes at the both sides of the element 1, transparent dielectric films 8, 9 are coated for protection so that they almost cover the entire surface of the piezoelectric film. The key coordinate is constituted with the combination of split electrodes 3i1, ..., and the constitution is made with transparent electrodes, allowing to indicate the coordinates easily and surely.