Patent ID: 11881542
Assignee: LUMILEDS, LLC
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wavelength-conversion layer comprising:
a set of multiple regions of a first conversion layer material;
a set of multiple regions of a second conversion layer material;
a set of multiple regions of a third conversion layer material, the regions of the first, second, and third conversion layer materials being contiguously arranged in a single wavelength-conversion layer with a first surface and a second surface, each region extending entirely through the single wavelength-conversion layer, at least two among the first, second, and third conversion layer materials being wavelength-converting phosphor materials; and
a set of sidewall layers arranged between each pair of adjacent regions against the respective conversion layer materials of those regions, the sidewall layers being arranged so as to reduce transmission of light between adjacent regions of the conversion layer materials, each sidewall layer extending entirely through the single wavelength-conversion layer,
a first subset of the sidewall layers separating adjacent regions of the first and second conversion layer materials, a second subset of the sidewall layers separating adjacent regions of the first and third conversion layer materials, a third subset of the sidewall layers separating adjacent regions of the second and third conversion layer materials, and the sidewall layers of the first and second subsets having a nonzero thickness that is about equal to 50% of a thickness of the sidewall layers of the third subset.