Display panel and display device

A display device, comprising:

• a display panel;
• and
• a sensing element for sensing light,
• wherein:
• a display area of the display panel comprises a first sub-display area, a second sub-display area surrounding at least a part of the first sub-display area, and a third sub-display area surrounding at least a part of the second sub-display area;
• the display panel comprises:
• a substrate;
• a plurality of sub-pixels, arranged in the display area on a side of the substrate;
• a light-shielding layer arranged on a side of the sub-pixels away from the substrate, wherein the light-shielding layer comprises a light-shielding structure and first openings, and the first openings are in one-to-one correspondence with the sub-pixels;
• and
• color film units, arranged corresponding to the first openings, wherein each color film unit is located at a corresponding one of the first openings, and at least a part of the color film unit is arranged to cover the light-shielding structure;
• wherein:
• a proportion of the light-shielding structure covered with the color film units in the second sub-display area is smaller than a proportion of the light-shielding structure covered with the color film units in the third sub-display area;
• and/or,
• a thickness of the color film units in the second sub-display area is smaller than a thickness of the color film units in the third sub-display area;
• wherein the sensing element is arranged on a side of the display panel away from a display surface and opposite to the first sub-display area of the display panel.