Patent ID: 11860219
Assignee: YUNGU (GU'AN) TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A device for detecting a touch panel, and further for detecting a metal mesh on the touch panel, the device for detecting the touch panel comprising: a signal transceiving component that is movably arranged relative to the metal mesh, and comprises a signal generating unit and a signal receiving unit, wherein the signal generating unit and the signal receiving unit are configured to be arranged on the same side of the metal meshes in preset relative positions, and send and receive a signal through capacitive coupling with the metal mesh, respectively; and
a defect detecting unit that is configured to detect whether each of a plurality of touch units in the metal mesh has a defect based on a detection signal received by the signal receiving unit and determine a position of the defect
wherein the defect detecting unit comprises a signal comparison unit and a processing unit; the signal comparison unit is configured to obtain the detection signal from the signal receiving unit, and determine an abnormal wave band based on a change of a waveform of the detection signal; the processing unit is configured to determine a touch unit which has a defect in the metal meshes based on a detection position of the signal transceiving component at a time corresponding to the abnormal wave band, and determine whether an amplitude of the abnormal wave band is greater than an average amplitude of multiple adjacent wave bands; if it is determined that the amplitude of the abnormal wave band is greater than the average amplitude of the multiple adjacent wave bands, then it is determined whether an amplitude variance of the abnormal wave band and the multiple adjacent wave bands is greater than a preset threshold; if yes, it is determined that a defect type is that a touch unit corresponding to the detection position has a residual defect; if not, it is determined that the defect type is that the touch unit corresponding to the detection position has a short-circuit defect with an adjacent channel; and if it is determined that the amplitude of the abnormal wave band is less than the average amplitude of the multiple adjacent wave bands, then it is determined whether the amplitude of the abnormal wave band is 0; if it is determined that the amplitude of the abnormal wave band is 0, then it is determined that the defect type is that there is a main path disconnection defect in the touch unit corresponding to the detection position; if it is determined that the amplitude of the abnormal wave band is not 0, then it is determined that the defect type is that there is a branch path disconnection defect in the touch unit corresponding to the detection position.