Detection device and detection method of a GOA circuit of a display panel

A detection method of a GOA circuit of a display panel,

• using a detection device comprising:
• a signal supply unit for supplying a test signal to the GOA circuit;
• an acquisition unit for determining whether each of a plurality of GOA units in a GOA unit group of the GOA circuit has an output signal, wherein if there is an output signal, acquiring the output signal of each of the GOA units in the GOA unit group, wherein part of the GOA units in the GOA circuit constitute the GOA unit group, and wherein the GOA unit group at least comprises an initial GOA unit and a distal GOA unit of the GOA circuit;
• and
• a processing unit for determining whether the GOA circuit is abnormal based on the acquired output signal of each of the GOA units in the GOA unit group,
• a signal input welding plate for connecting an input terminal of the GOA circuit,
• a signal output welding plate for connecting an output terminal of each of the GOA units in the GOA unit group,
• wherein the signal supply unit is used for supplying the test signal to the GOA circuit through the signal input welding plate;
• the acquisition unit is used for determining whether there is an output signal in each of the GOA units in the GOA unit group of the GOA circuit through the signal output welding plate, and acquiring the output signal of each of the GOA units in the GOA unit group
• the detection method comprising:
• connecting the input terminal of the GOA circuit with the signal input welding plate;
• supplying a test signal to the GOA circuit through the signal input welding plate;
• determining whether each of a plurality of GOA units in a GOA unit group of the GOA circuit has an output signal through the signal output welding plate;
• if there is an output signal, acquiring the output signal of each of the GOA units in the GOA unit group;
• wherein part of the GOA units in the GOA circuit constitute the GOA unit group, and wherein the GOA unit group at least comprises an initial GOA unit and a distal GOA unit of the GOA circuit;
• and
• determining whether the GOA circuit is abnormal based on the acquired output signal of each of the GOA units in the GOA unit group,
• wherein the step of determining whether the GOA circuit is abnormal based on the acquired output signal of each of the GOA units in the GOA unit group comprises:
• comparing waveform parameters, at least including period, level amplitude, and high level retention time, of each waveform of the acquired output signals of the GOA units with corresponding waveform parameters of other waveforms of the acquired output signals of the GOA units one by one, and determining that the GOA circuit is abnormal if the waveform parameters of the acquired output signals of the GOA units are inconsistent;
• determining that the GOA circuit is normal if the waveform parameters of the acquired output signals of the GOA units are consistent.