The invention discloses an organic electroluminesence display panel and a
display device. A first preset
voltage is written into a grid of a drive
transistor through a data writing unit; drive current of the drive
transistor is received through a detection unit; the drive current is computed through a detection line, and the
grid voltage of the drive
transistor is adjusted until the changing quantity of the
voltage on the detection line becomes a preset value, so that the changing quantity of the drive
voltage of a
light emitting device is computed through computing the changing quantity of the
grid voltage of the drive transistor, and thus the
ageing condition corresponding to the
light emitting device is obtained. An original gray value corresponding to each sub-pixel is compensated according to the
ageing condition of the
light emitting device in each sub-pixel, so that the uniformity of the brightness of the display panel is improved. Furthermore, a plurality of sub-pixels belonging to one pixel group in the display panel share one detection line, so that the wiring number in the display panel can be reduced, and thus the number of
signal channels of a drive
chip can be reduced, and the area of the drive
chip is decreased to reduce the production cost.