Display panel and display device

A display device, comprising a display panel, wherein:

• the display panel includes:
• a substrate;
• light-emitting devices;
• a plurality of pad groups on a side of the substrate, wherein each of the plurality of pad groups includes a first pad and a second pad, and at least one pad group of the plurality of pad groups corresponds to one light-emitting device;
• a driving circuit layer disposed between the substrate and the plurality of pad groups;
• one or more first metal elements and one or more second metal elements disposed in the driving circuit layer at a side of the plurality of pad groups close to the substrate;
• a plurality of light-emitting regions;
• a plurality of light-transmitting regions;
• and
• at least one insulating layer,
• wherein:
• in one pad group of the plurality of pad groups corresponding to one same light-emitting device, along a direction perpendicular to a plane of the substrate, the first pad at least partially overlaps the one or more first metal elements, the second pad at least partially overlaps the one or more second metal elements, an overlapping area of the first pad and the one or more first metal elements is S1, and an overlapping area of the second pad and the one or more second metal elements is S2, wherein |S1−S2|/S1≤5%;
• or
• in one pad group of the plurality of pad groups corresponding to one same light-emitting device, along the direction perpendicular to the plane of the substrate, the first pad does not overlap the one or more first metal elements, and the second pad does not overlap the one or more second metal elements;
• each light-emitting region of the plurality of light-emitting regions includes at least one light-emitting device;
• an orthographical projection of one pad group of the plurality of pad groups on the substrate is located in a corresponding one of the plurality of light-emitting regions;
• the at least one insulating layer is disposed on the side of the plurality of pad groups close to the substrate, and includes through holes in the plurality of light-transmitting regions;
• in one pad group of the plurality of pad groups, along a direction parallel to the plane of the substrate, a minimum distance from the first pad to one corresponding through hole is W1, and a minimum distance from the second pad to one corresponding through hole is W2, wherein |W1−W2|≤1.1 μm;
• each light-emitting device includes at least a first-color light-emitting device and a second-color light-emitting device;
• the first-color light-emitting device is a blue or green light-emitting device, and the second-color light-emitting device is a red light-emitting device;
• in one of the plurality of pad groups corresponding to the first color light-emitting device, a number of the one or more first metal elements at least partially overlapping the first pad is P;
• in one of the plurality of pad groups corresponding to the second color light-emitting device, a number of the one or more first metal elements at least partially overlapping the first pad is Q;
• and
• Q>P≥0, and P and Q are integers.

A display panel, comprising:

• a substrate;
• light-emitting devices;
• a plurality of pad groups on a side of the substrate, wherein each of the plurality of pad groups includes a first pad and a second pad, and at least one pad group of the plurality of pad groups corresponds to one light-emitting device;
• a driving circuit layer disposed between the substrate and the plurality of pad groups;
• and
• one or more first metal elements and one or more second metal elements disposed in the driving circuit layer at a side of the plurality of pad groups close to the substrate,
• wherein:
• in one pad group of the plurality of pad groups corresponding to one same light-emitting device, the light-emitting device includes a first pin and a second pin, the first pin being bonded and electrically connected to the first pad, and the second pin being bonded and electrically connected to the second pad;
• in one pad group of the plurality of pad groups corresponding to one same light-emitting device, along a direction perpendicular to a plane of the substrate, the first pad at least partially overlaps the one or more first metal elements, the second pad at least partially overlaps the one or more second metal elements, an overlapping area of the first pad and the one or more first metal elements is S1, and an overlapping area of the second pad and the one or more second metal elements is S2, wherein |S1−S2|/S1≤5%;
• or
• in one pad group of the plurality of pad groups corresponding to one same light-emitting device, along the direction perpendicular to the plane of the substrate, the first pad does not overlap the one or more first metal elements, and the second pad does not overlap the one or more second metal elements;
• each light-emitting device includes at least a first-color light-emitting device and a second-color light-emitting device;
• the first-color light-emitting device is a blue or green light-emitting device, and the second-color light-emitting device is a red light-emitting device;
• in one of the plurality of pad groups corresponding to the first color light-emitting device, a number of the one or more first metal elements at least partially overlapping the first pad is P;
• in one of the plurality of pad groups corresponding to the second color light-emitting device, a number of the one or more first metal elements at least partially overlapping the first pad is Q;
• and
• Q>P≥0, and P and Q are integers.