Display panel and display device

A display panel comprising a first display region and a second display region adjacent to each other, a light transmittance of the first display region being different from that of the second display region, the first display region comprising a first boundary on a side of the display panel, the second display region comprising a second boundary on the same side and connected with the first boundary, and the display panel comprising

• a first pixel unit, which is located in the first display region and comprises a plurality of first sub-pixels of different colors;
• a second pixel unit, which is located in the second display region and comprises a plurality of second sub-pixels of different colors, and
• dummy sub-pixels, which are located in the first display region and between the first pixel unit and the first boundary, wherein a color of the dummy sub-pixels is the same as that of the second sub-pixels in the second pixel unit adjacent to the second boundary.