Open circuit detection device and open circuit detection method

The invention relates to the field of circuit design, and relates to an open circuit detection device and an open circuit detection method. The detection device is used for carrying out open circuit detection on a first circuit board and a second circuit board in the display assembly, and the display assembly further comprises a third circuit board and a display area. The detection device comprises a mounting plate and a signal generation assembly, the mounting plate is provided with a mounting surface, and the mounting surface is provided with a first connecting part and a second connecting part which are electrically connected; the first circuit board is connected with the first connecting part, and the second circuit board is connected with the second connecting part; the third circuit board is connected between the first connecting part and the second connecting part, and the third circuit board is used for providing an electric signal for the display area; the signal generating assembly is electrically connected with the first connecting part and the second connecting part and used for sending a detection signal to a detection loop composed of the first circuit board, the second circuit board and the third circuit board. The detection device disclosed by the invention can be used for quickly identifying bad products and is beneficial to improving the yield of outgoing products.