Display panel and display device

A display panel, comprising:

• a plurality of pixel units arranged in an array;
• a plurality of scan signal lines, wherein each of the scan signal lines is coupled to a row of the pixel units and is configured to output a scan signal to the row of the pixel units;
• a plurality of data signal lines, wherein each of the data signal lines is coupled to a column of the pixel units and is configured to output a data signal to the column of the pixel units;
• and
• a plurality of pulse width modulation signal lines, wherein each of the pulse width modulation signal lines is coupled to a row of the pixel units and is configured to output a pulse width modulation signal to the row of the pixel units and control a lighting time of the row of the pixel units to achieve different gray levels;
• wherein the lighting time of each of the pixel units is related to a brightness value of each of the pixel units;
• wherein if a driving frequency of the display panel is 60 Hz and a gray scale of the pixel units to be displayed is 255, turn-on time of the pulse width modulation signal is 16 ms;
• wherein when the gray scale of the pixel units is 1, gamma is 2.2, and a brightness value of the pixel units is 0.001, turn-on time of the pulse width modulation signal is 0.081 us;
• when the gray scale of the pixel units is 2, gamma is 2.2, and the brightness value of the pixel units is 0.002, the turn-on time of the pulse width modulation signal is 0.373 us;
• when the gray scale of the pixel units is 4, gamma is 2.2, and the brightness value of the pixel units is 0.011, the turn-on time of the pulse width modulation signal is 1.715 us;
• when the gray scale of the pixel units is 8, gamma is 2.2, and the brightness value of the pixel units is 0.049, the turn-on time of the pulse width modulation signal is 7.880 us;
• when the gray scale of the pixel units is 32, gamma is 2.2, and the brightness value of the pixel units is 1.040, the turn-on time of the pulse width modulation signal is 166.365 us;
• when the gray scale of the pixel units is 64, gamma is 2.2, and the brightness value of the pixel units is 4.778, the turn-on time of the pulse width modulation signal is 764.412 us;
• and when the gray scale of the pixel units is 128, gamma is 2.2, and the brightness value of the pixel units is 21.952, the turn-on time of the pulse width modulation signal is 3512.315 us.