Pressure-sensitive detection apparatus, electronic device, and touch display screen

A touch display screen, wherein the touch display screen comprises a display screen coverage layer, a display screen display, a touch input pad, and a pressure-sensitive detection apparatus, and wherein the pressure-sensitive detection apparatus is located in a support structure inside the touch display screen, wherein the pressure-sensitive detection apparatus comprises:

• a pressure sensor array, wherein each row of the pressure sensor array comprises M pressure sensors, wherein the M pressure sensors constitute one half-bridge circuit, wherein the half-bridge circuit comprises a first pressure sensor component and a second pressure sensor component, wherein a first terminal of the first pressure sensor component is connected to a power supply, wherein a second terminal of the first pressure sensor component is connected to a first terminal of the second pressure sensor component, wherein a second terminal of the second pressure sensor component is connected to the ground, wherein the second terminal of the first pressure sensor component is an output terminal of the half-bridge circuit, wherein the first pressure sensor component and the second pressure sensor component each comprise one or more pressure sensors, wherein M is an integer greater than 2, and wherein:
• the pressure sensor array is located in a touch display screen, and pressure of a touch input signal on the touch display screen is transferred to the pressure sensor array;
• and
• when there is a touch input signal on the touch display screen, a first half-bridge circuit and a second half-bridge circuit in the pressure sensor array that correspond to a touch location of the touch input signal output signals, wherein a deformation amount generated when pressure is applied to a first pressure sensor component in the first half-bridge circuit is less than a deformation amount generated when the pressure is applied to a second pressure sensor component in the first half-bridge circuit, and wherein a deformation amount generated when the pressure is applied to a first pressure sensor component in the second half-bridge circuit is greater than a deformation amount generated when the pressure is applied to a second pressure sensor component in the second half-bridge circuit.

An electronic device, wherein the electronic device comprises at least one processor and a pressure-sensitive detection apparatus comprising a pressure sensor array located in a touch display screen, wherein each row of the pressure sensor array comprises M pressure sensors, wherein the M pressure sensors constitute one half-bridge circuit, wherein the half-bridge circuit comprises a first pressure sensor component and a second pressure sensor component, wherein a first terminal of the first pressure sensor component is connected to a power supply, wherein a second terminal of the first pressure sensor component is connected to a first terminal of the second pressure sensor component, wherein a second terminal of the second pressure sensor component is connected to the ground, wherein the second terminal of the first pressure sensor component is an output terminal of the half-bridge circuit, wherein the first pressure sensor component and the second pressure sensor component each comprise one or more pressure sensors, wherein M is an integer greater than 2, wherein:

• the at least one processor is configured to:
• when there is a touch input signal on the touch display screen, trigger a first half-bridge circuit and a second half-bridge circuit in the pressure sensor array that correspond to a touch location of the touch input signal to output signals, wherein a deformation amount generated when pressure is applied to a first pressure sensor component in the first half-bridge circuit is less than a deformation amount generated when the pressure is applied to a second pressure sensor component in the first half-bridge circuit, and wherein a deformation amount generated when the pressure is applied to a first pressure sensor component in the second half-bridge circuit is greater than a deformation amount generated when the pressure is applied to a second pressure sensor component in the second half-bridge circuit;
• obtain an output signal of a target full-bridge circuit, wherein the target full-bridge circuit indicates a full-bridge circuit comprising the first half-bridge circuit and the second half-bridge circuit;
• and
• calculate a pressure value of the touch input signal based on the output signal of the target full-bridge circuit, the touch location, and a pressure calculation model, wherein the pressure calculation model comprises a mathematical relationship between a sampled touch location on the touch display screen, a pressure value of a sampled touch input signal at the sampled touch location, and an output signal of a sampled full-bridge circuit corresponding to the sampled touch location.