US 12,366,922 B2
Drive control circuit, driving method thereof, and haptic feedback apparatus
Jijing Huang, Beijing (CN); Jiawen Zhang, Beijing (CN); and Zongmin Liu, Beijing (CN)
Assigned to Beijing BOE Technology Development Co., Ltd., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/685,600
Filed by Beijing BOE Technology Development Co., Ltd., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Aug. 10, 2022, PCT No. PCT/CN2022/111356
§ 371(c)(1), (2) Date Feb. 22, 2024,
PCT Pub. No. WO2024/031415, PCT Pub. Date Feb. 15, 2024.
Prior Publication US 2024/0353929 A1, Oct. 24, 2024
Int. Cl. G06F 3/01 (2006.01); G06F 3/041 (2006.01); G06F 3/0488 (2022.01)
CPC G06F 3/016 (2013.01) [G06F 3/0416 (2013.01); G06F 3/0488 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A drive control circuit, comprising:
a feedback detection circuit coupled to at least one haptic detection piezoelectric device in a haptic feedback panel, the feedback detection circuit being configured to, when a target object presses on the haptic feedback panel, process an initial voltage signal of each of the at least one haptic detection piezoelectric device, and output a detection signal corresponding to each of the at least one haptic detection piezoelectric device;
a data processing circuit coupled to the feedback detection circuit, the data processing circuit being configured to receive the detection signal corresponding to each of the at least one haptic detection piezoelectric device, and output a drive enable signal according to the detection signal corresponding to each of the at least one haptic detection piezoelectric device and a set threshold; and
a feedback drive circuit coupled to at least one haptic drive piezoelectric device in the haptic feedback panel and the data processing circuit, the feedback drive circuit being configured to receive the drive enable signal, and output a drive control signal to the at least one haptic drive piezoelectric device according to the drive enable signal,
wherein the feedback drive circuit comprises at least one reference voltage generation circuit, at least one drive generation circuit, and at least one signal output circuit; the at least one reference voltage generation circuit, the at least one drive generation circuit, the at least one signal output circuit, and the at least one haptic drive piezoelectric device are in one-to-one correspondence;
the reference voltage generation circuit is configured to generate a reference voltage;
the drive generation circuit is coupled to the data processing circuit, and configured to receive the drive enable signal and the reference voltage, generate an initial control signal according to the drive enable signal and the reference voltage, and output the initial control signal;
the signal output circuit is coupled to the drive generation circuit, and configured to receive the initial control signal, perform boosting on the initial control signal to generate the drive control signal, and output the drive control signal to a correspondingly coupled haptic drive piezoelectric device.