Pixel detection device and pixel detection method

The pixel detection device includes a substrate. The substrate comprises a sub-pixel circuit, a detection transistor, a first detection board and a second detection board. The sub-pixel circuit includes a light emitting element. The detection transistor is coupled to the light-emitting element. The first detection board is coupled to the detection transistor. The second detection plate is coupled to the light-emitting element. The first detection plate outputs a first detection signal at a first sub-stage of the first stage, and the first detection signal is switched from a first voltage level to a second voltage level to control a first voltage of the detection transistor. The second detection board outputs a second detection signal in the first sub-stage, and the second detection signal is switched from the second voltage level to the first voltage level to control the second voltage of the light-emitting element. The detection transistor and the light-emitting element are turned on according to the first v