Pressure detecting device and touch panel

    公开(公告)号:US10031606B2

    公开(公告)日:2018-07-24

    申请号:US14891165

    申请日:2014-05-16

    摘要: The invention provides a pressure detecting device containing a pressurized member having a contact surface that is subjected to pressure due to contact with a pressurizing means; and a piezoelectric member that is arranged facing the pressurized member and that includes a polymeric piezoelectric material having a piezoelectric constant d14 of 1 pm/V or more as measured by a displacement method at 25° C., and a ratio IEb/IEa between a product IEb of a cross-sectional secondary moment Ib and a Young's modulus Eb of the pressurized member, and a product IEa of a cross-sectional secondary moment Ia and a Young's modulus Ea of the piezoelectric member, is in a range of from 102 to 1010.

    Polymeric piezoelectric film and method for manufacturing thereof

    公开(公告)号:US10669397B2

    公开(公告)日:2020-06-02

    申请号:US15550154

    申请日:2016-01-28

    摘要: A polymeric piezoelectric film, including a helical chiral polymer (A) having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, in which, in the film: a crystallinity given by a DSC method is from 20% to 80%; a standardized molecular orientation MORc is from 3.5 to 15.0 when a reference thickness measured by a microwave transmission-type molecular orientation meter is 50 μm; and when a direction parallel to a phase difference streak is a direction X, a direction perpendicular to the direction X and parallel to a main plane of a film is a direction Y, and the phase difference streak is evaluated by an evaluation method A, per a length of 1,000 mm in the direction Y, a number of phase difference streaks with an evaluation value of 60 or more is 0, and a sum of the evaluation values of phase difference streaks with an evaluation value of 20 or more is 1000 or less.

    DISPLAY PANEL WITH PRESSURE SENSOR AND ELECTRONIC DEVICE WITH PRESSING INPUT FUNCTION
    7.
    发明申请
    DISPLAY PANEL WITH PRESSURE SENSOR AND ELECTRONIC DEVICE WITH PRESSING INPUT FUNCTION 审中-公开
    带压力传感器和电子设备的显示面板,带有输入功能

    公开(公告)号:US20160077649A1

    公开(公告)日:2016-03-17

    申请号:US14931947

    申请日:2015-11-04

    IPC分类号: G06F3/041 G02F1/1335

    摘要: An electronic device with pressing input function has a substantially rectangular parallelepiped-shaped housing. A display panel with pressure sensor and an arithmetic circuit module are disposed in the housing. The display panel with pressure sensor is composed of a pressure sensor and a display panel. In the display panel, a front polarizing plate is disposed on a front face of a liquid crystal panel. In the pressure sensor, electrodes are formed on both respective flat plate faces of a piezoelectric film having birefringence. The pressure sensor is disposed between the liquid crystal panel and the front polarizing plate of the display panel, and a uniaxial drawing direction of the piezoelectric film is parallel to a polarizing direction of the front polarizing plate.

    摘要翻译: 具有按压输入功能的电子装置具有大致长方体形的外壳。 具有压力传感器和运算电路模块的显示面板设置在壳体中。 具有压力传感器的显示面板由压力传感器和显示面板组成。 在显示面板中,前偏振片设置在液晶面板的正面上。 在压力传感器中,电极形成在具有双折射的压电膜的两个平板面上。 压力传感器设置在显示面板的液晶面板和前偏振片之间,压电薄膜的单轴拉伸方向平行于前偏振片的偏振方向。