PRESSURE SENSOR AND SHIFT REGISTER

• Main Authors: YAMAMOTO TAKUMI, OZAKI TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 28.06.2018
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide a pressure sensor of a passive matrix structure capable of preventing noises mixed in output current, and a shift register achieving the same.SOLUTION: The pressure sensor includes: a first base material formed with a scan drive circuit thereon, which includes one or more shift registers; a second base material formed with plural drive electrodes each connected to the scan drive circuit, to which the first base material is mounted being bonded thereto; a third base material on which plural detection electrodes are formed; and a pressure-sensitive conductive material layer which is disposed between the second base material and the third base material. The scan drive circuit can select drive electrodes sequentially or as a batch to which a drive voltage is applied via the plural drive electrodes, applies a predetermined voltage to the selected drive electrodes, and holds unselected drive electrodes at a voltage different from the predetermined voltage.SELECTED DRAWING: Figure 2 【課題】出力電流へのノイズの混入を抑制することができるパッシブマトリクス構造の感圧センサ及びそれを実現するシフトレジスタを提供する。【解決手段】感圧センサは、１つ以上のシフトレジスタを含む走査駆動回路が形成された第１の基材と、第１の基材が貼付実装され、走査駆動回路に接続された複数の駆動電極が形成された第２の基材と、複数の検出電極が形成された第３の基材と、第２の基材と第３の基材との間に挿入された感圧導電材料層とを備える感圧センサであって、走査駆動回路は、複数の駆動電極から駆動電圧を印加する駆動電極を順次あるいは一括で選択でき、選択状態の前記駆動電極に所定の電圧を印加し、非選択状態の駆動電極を選所定の電圧とは異なる電圧で保持する。【選択図】図２