Patent ID: 11910704
Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 4:
5. The organic light emitting diode device as claimed in claim 1, wherein a host material of the second common blue-light light-emitting layer is a preferred electron type material, and its chemical formula is:, wherein each of R1, R2, R3, R4, R5 and R6 represents a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, or a group comprising a carbonyl group with twenty or less carbon atoms, a group comprising a carbonyl ester group, an alkyl group, an alkenyl group, an alkoxyl group, a group comprising a silyl group with thirty or less carbon atoms, a group comprising an aryl group, a group comprising a heterocyclic group, a group comprising an amino group, or a derivative thereof.