Ultraviolet light-emitting device and method for manufacturing same

• Main Authors: KAWAOKA AYA, MATSUSHIMA TAKESHI, SHUGO TAKASHI, TACHIBANA KAZUYA, HAKAMADA SHINTARO, SHIMONISHI SHOTA, MATSUURA KENICHI, KAMIJO TAKAAKI
• Format: Patent
• Language: Chinese; English
• Published: 20.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

Provided is an ultraviolet light-emitting device in which an ultraviolet light-emitting element is sealed and in which light extraction efficiency is improved. An ultraviolet light-emitting device (100) is provided with a substrate (110), an ultraviolet light-emitting element (120), and a fluororesin layer (140). The fluororesin layer (140) has: an element covering section (141) that covers the second surface (120b) of the ultraviolet light-emitting element (120); and a substrate covering section (142) that covers the mounting surface (110a) of the substrate (110). The substrate covering part (142) has a flat part (FS1), and the flat part (FS1) has a flat surface (FS1a). A distance (H1) from a point (Q1) farthest from a second surface (120b) of the ultraviolet light-emitting element (120) in the element covering part (141) to the second surface (120b) of the ultraviolet light-emitting element (120) is 1.3 times or more and 5 times or less of a distance (H2) from a flat surface (FS1a) of a flat part (FS1) of t