Light-emitting structure

A light-emitting structure, comprising:

• a first region and a second region surrounding the first region;
• wherein
• the first region comprises a plurality of first light-emitting units, the second region comprises a plurality of second light-emitting units;
• and
• a distance between adjacent first light-emitting units of the plurality of first light-emitting units is less than a distance between adjacent second light-emitting units of the plurality of second light-emitting units in a circumferential direction of the light-emitting structure and in a radial direction of the light-emitting structure;
• wherein an areal occupancy of the plurality of first light-emitting units in the first region is higher than an areal occupancy of the plurality of second light-emitting units in the second region per unit area, so as to increase a doping rate of a light-emitting element in an active layer in the second region relative to the first region, such that a ratio of a light-emitting element content in the active layer of the first light-emitting unit to a light-emitting element content in the active layer of the second light-emitting unit ranges from 0.95 to 1.05.