Display panel and preparation method thereof

The invention discloses a display panel and a preparation method thereof, and belongs to the technical field of display. The display panel comprises a substrate, and a light-emitting layer and a compensation layer which are sequentially arranged on the substrate in the direction away from the substrate, the light-emitting layer comprises a plurality of light-emitting units for emitting light with different colors; the compensation layer is used for transmitting light from the multiple light-emitting units at a first environment temperature and adjusting the light-emitting brightness of an area where at least one light-emitting unit in the multiple light-emitting units in the display panel is located at a second environment temperature. Therefore, the change rate difference of the light-emitting brightness of the area where the multiple light-emitting units are located in the display panel at the second environment temperature compared with the first environment temperature is compensated. According to the display panel, the brightness attenuation difference of the light emitted by the different light emitting units out of the display panel is compensated through the compensation layer, and therefore the problem that the display effect of the display panel for the same picture at different environment temperatures is large in deviation is solved. The display effect of the display panel is improved.