Patent ID: 11972733
Assignee: YUNGU (GU'AN) TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 7:
8. A light-emitting device, wherein a light-emitting color of the light-emitting device is a primary color of either red or green, and the light-emitting device comprises:
a light-emitting layer comprising a host material, and
a compensation layer for carrying holes and disposed on a hole injection side of the light-emitting layer;
wherein the light-emitting device has a starting state and an operating state, and a starting voltage of the light-emitting device in the starting state is lower than an operating voltage of the light-emitting device in the operating state;
wherein, in the starting state, there is a first activation energy difference value ΔEa1 between activation energies of the host material and the compensation layer, and the first activation energy difference value ΔEa1<0 eV; and
wherein, in the operating state, there is a fourth activation energy difference value ΔEa4 between activation energies of the host material and the compensation layer, and the fourth activation energy difference value ΔEa4>0 eV.