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Force touch display device and force touch control method

  • US 10,175,786 B2
  • Filed: 09/29/2016
  • Issued: 01/08/2019
  • Est. Priority Date: 01/18/2016
  • Status: Active Grant
First Claim
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1. A force touch display device, comprising a display panel and a force touch detecting module, wherein the force touch detecting module is arranged opposite to the display panel, and the force touch detecting module is configured to detect an amount of deformation of the force touch display device so as to determine a force level of a touch force applied on the display panel;

  • wherein the force touch detecting module comprises a calculation module and a force touch detecting module substrate, and wherein there is a gap between the force touch detecting module substrate and the display panel;

    wherein the force touch detecting module further comprises one or more sensors disposed on the force touch detecting module substrate, which is/are configured to send a sensing signal, representing a distance between the force touch detecting module substrate and the display panel, to the calculation module;

    wherein the calculation module is configured to determine the amount of deformation of the force touch display device based on the sensing signal, and the calculation module is configured to determine the force level of the touch force based on the amount of deformation of the force touch display device;

    wherein each sensor of the one or more sensors comprises a transmitter, a receiver and a measuring circuit, wherein the transmitter is configured to transmit a detecting signal to the display panel, the receiver is configured to receive a reflected signal which is reflected back from the display panel, and the measuring circuit is configured to calculate a time difference between a time when the transmitter transmits the detecting signal and a time when the receiver receives the reflected signal, and calculate the distance between the force touch detecting module substrate and the display panel based on the time difference;

    wherein the force touch display device further comprises a touch driver module, whereinat least one preset value is preset in the calculation module, the at least one preset value defines a plurality of force ranges, each of which corresponds to a force level, and the calculation module is configured to calculate a force value of the touch force based on the amount of deformation of the force touch display device and compare the calculated force value with each of the preset values so as to determine the force level of the touch force and generate a corresponding determination signal; and

    wherein the touch driver module is configured to drive the display panel to perform a corresponding operation after receiving the determination signal sent by the calculation module.

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