Patent ID: 11870023
Assignee: LUMILEDS, LLC
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A light emitting device comprising:
a semiconductor diode structure that in operation emits a first light comprising first light rays and second light rays;
a substrate transparent to the first light and comprising a top surface, a bottom surface oppositely positioned from the top surface, and side surfaces connecting the top surface and the bottom surface, the bottom surface disposed on or adjacent the semiconductor diode structure;
a wavelength converting structure comprising a top surface and an oppositely positioned bottom surface disposed on or adjacent the top surface of the substrate; and
a 1D photonic crystal comprising nanoantennas, the 1D photonic crystal positioned between the top surface of the substrate and the top surface of the wavelength converting structure and in operation reflects the first light rays and transmits the second light rays into the wavelength converting structure at a third angle with respect to the 1D photonic crystal greater than a second angle with respect to the 1D photonic crystal, the semiconductor diode structure in operation emits the first light rays to be incident on the 1D photonic crystal from a substrate side at a first angle with respect to the 1D photonic crystal less than or equal to a cutoff angle and configured to emit the second light rays to be incident on the 1D photonic crystal from the substrate side at the second angle, the second angle being greater than the cutoff angle.