The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2016
Filed:
Aug. 30, 2012
Fujito Yamaguchi, Tokyo, JP;
Jun Koike, Tokyo, JP;
Masatoshi Maeda, Tokyo, JP;
ASAHI KASEI E-MATERIALS CORPORATION, Tokyo, JP;
Abstract
To provide a substrate for optics provided with a fine-structure product which improves luminous efficiency of an LED while improving internal quantum efficiency IQE by decreasing the number of dislocation defects in a semiconductor layer, a substrate for optics () is provided with a fine-structure layer () including dots comprised of a plurality of convex portions () extending in the direction of from the main surface of a substrate () to outside the surface, where the fine-structure layer () has a plurality of dot lines (-to-N) in which a plurality of dots is arranged with a pitch Py in the first direction in the main surface of the substrate (), while having the plurality of dot lines in which a plurality of dots is arranged with a pitch Px in the second direction orthogonal to the first direction in the main surface of the substrate (), one of the pitch Py and the pitch Px is a constant interval of nano-order, while the other one is an inconstant interval of nano-order, or both are inconstant intervals of nano-order.