According to the present disclosure, a display panel and a circuit board assembly are provided, and the circuit board assembly includes a first circuit board, a second circuit board, a third circuit board, a first connector and a second connector. The first circuit board is provided with a power supply module, a balance resistor and a plurality of first power supply lines. The balance resistor is connected to the power supply module and each of the first power supply lines. The second circuit board is provided with a plurality of second power supply lines, the third circuit board is provided with a first power connection line, the first power connection line is connected to the power supply module through the first connector, the first power connection line is further connected to each of the second power supply lines through the second connector.