Patent ID: 11868005
Assignee: NICHIA CORPORATION
Field: Optics (Instruments)
Classification: CPC G  F | IPC F  G

Claim 0:
1. A planar light source comprising:
a substrate;
a plurality of light sources arranged on the substrate; and
at least one partitioning member disposed on the substrate and defining a plurality of partitioned regions arranged in a first direction and in a second direction that intersects the first direction, at least one of the light sources being arranged in a corresponding one of the partitioned regions, the at least one partitioning member including
a plurality of first wall parts defining a plurality of first ridges extending in the first direction, the first wall parts defining at least one first cut on at least one of the first ridges, the at least one first cut extending through an entire thickness of a corresponding one of the first wall parts, and
a plurality of second wall parts defining a plurality of second ridges extending in the second direction,
at least one of the partitioned regions being surrounded by the first ridges and the second ridges in a plan view and including an opposing pair of the first wall parts and an opposing pair of the second wall parts, wherein the at least one first cut segmentalizes the at least one of the first ridges to allow the at least one of the first ridges to shrink along the first direction when a thermal load is applied to the at least one partitioning member.