Light-Emitting Device and Display Panel

A display panel, comprising:

• a substrate;
• and
• a plurality of light-emitting devices disposed on the substrate and arranged in a first direction, the first direction being parallel to a plane where the substrate is located;
• the plurality of light-emitting devices including at least one first light-emitting device, at least one second light-emitting device and at least one third light-emitting device, the first light-emitting device being configured to emit blue light, the second light-emitting device being configured to emit green light, and the third light-emitting device being configured to emit red light;
• wherein each light-emitting device of the plurality of light-emitting devices includes:
• a cathode and an anode that are arranged opposite to each other, and at least one light-emitting unit arranged between the cathode and the anode;
• a light-emitting unit of the at least one light-emitting unit includes a light-emitting layer;
• a number of light-emitting units included in each light-emitting device of the plurality of light-emitting devices is n, wherein n is a positive integer greater than or equal to 1;
• and
• a thickness of a light-emitting layer of an N-th light-emitting unit of the third light-emitting device is greater than a thickness of a light-emitting layer of an N-th light-emitting unit of the second light-emitting device, and the thickness of the light-emitting layer of the N-th light-emitting unit of the second light-emitting device is greater than a thickness of a light-emitting layer of an N-th light-emitting unit of the first light-emitting device, wherein N is a positive integer less than or equal to n.