Patent ID: 11910630
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A white light organic light-emitting diode (WOLED) device, comprising:
an anode;
a cathode, disposed opposite to the anode;
a red-fluorescence emitting layer, disposed on a side of the anode close to the cathode;
a green-fluorescence emitting layer, disposed on a side of the red-fluorescence emitting layer close to the cathode;
an interlayer, disposed on a side of the green-fluorescence emitting layer close to the cathode, wherein the interlayer comprises a first Host material and a first thermally activated delayed fluorescence (TADF) material; and
a blue-fluorescence emitting layer, disposed on a side of the interlayer close to the cathode; wherein
emission spectra of the WOLED device comprise a first peak which is a main peak, wherein a peak wavelength of the first peak is not greater than 485 nm;
the emission spectra of the WOLED device comprise a second peak in green-band, wherein a peak wavelength of the second peak is in a range of 510 nm˜525 nm;
the emission spectra of the WOLED device comprise a third peak and a fourth peak in red-band, wherein a peak wavelength of the third peak is in a range of 610 nm˜625 nm, and a peak wavelength of the fourth peak is in a range of 656 nm˜670 nm; and
magnitudes of the first peak, the second peak, the third peak and the fourth peak are descending.