Display panel and display device

A display device, comprising an optical sensor and a display panel, wherein the display panel includes:

• a base substrate provided with a first display region, wherein the first display region comprises a plurality of pixel circuit regions and a light-transmitting region;
• a plurality of pixel circuit groups disposed in the plurality of pixel circuit regions, wherein each pixel circuit group comprises a first number of pixel circuits arranged in a first direction, and a minimum distance between adjacent pixel circuit groups is greater than a minimum distance between adjacent pixel circuits in the pixel circuit group;
• a plurality of first signal lines extending in a second direction, wherein the first direction and the second direction intersect, at least one pixel circuit group in the plurality of pixel circuit groups is connected to a second number of the first signal lines which are electrically connected by a connecting line, for each pixel circuit group in the at least one pixel circuit group, each first signal line in the second number of the first signal lines is connected to at least one pixel circuit in the pixel circuit group, at least part of line segments in the first signal lines are disposed in the light-transmitting region, and the connecting line is disposed in the pixel circuit regions, wherein the second number is not greater than the first number;
• and
• a plurality of light-emitting units disposed in the first display region, wherein the plurality of pixel circuit groups is configured to drive the plurality of light-emitting units to emit light, and an orthographic projection of at least part of the light-emitting units in the plurality of light-emitting units onto the base substrate is overlapped with an orthographic projection, onto the base substrate, of the at least part of line segments in the first signal lines;
• and wherein an orthogonal projection of the optical sensor onto the display panel is at least partially overlapped with the first display region in the display panel.