Optionally, the at least one sub-pixel sub-unit circuit further includes a data writing sub-circuit and a driving transistor; the at least two display signal lines include a first gate line and the data line; the at least two compensation signal lines include a second gate line and the reading line; the data writing sub-circuit is connected to the first gate line, the data line and a gate electrode of the driving transistor; the reading control sub-circuit is connected to the second gate line, the reading line and a first terminal of the photosensitive circuit; the pixel unit circuit includes a multiplexer circuit; the data line is connected to a first input terminal of the multiplexer sub-circuit; the reading line is connected to a second input terminal of the multiplexer sub-circuit; an output terminal of the multiplexer sub-circuit is connected to a control circuit outside the pixel unit circuit; the compensation control sub-circuit and the data driving sub-circuit are arranged in the control circuit; the compensation control sub-circuit is connected to the reading line through the multiplexer sub-circuit; in the reading time sub-stage, controlling, by the reading control sub-circuit, the photosensitive sub-circuit to be connected to the reading line so that the electrical signal is transferred from the photosensitive sub-circuit to the compensation control sub-circuit through the reading line, includes: in the reading time sub-stage, controlling, by the multiplexer sub-circuit, the reading line to be connected to the control circuit, so that the electrical signal is transferred from the photosensitive sub-circuit to the compensation control sub-circuit in the control circuit through the reading line. After the data driving sub-circuit obtains the adjusted data voltage, the method further includes: controlling, by the multiplexer sub-circuit, the reading line and the control circuit to be disconnected with each other, and controlling, by the multiplexer sub-circuit, the control circuit and the data line to be connected to each other, and transmitting, by the data driving sub-circuit, the adjusted data voltage to the at least one sub-pixel sub-unit circuit through the data line.