ULTRAVIOLET LIGHT EMITTING DEVICE AND METHOD FOR PRODUCING THE SAME

• Main Authors: KAWAOKA AYA, SHUGO TAKASHI, TACHIBANA KAZUYA, HAKAMADA SHINTARO, SHIMONISHI SHOTA, MATSUTO TAKESHI, MATSUURA KENICHI, KAMIJO TAKAAKI
• Format: Patent
• Language: English; Japanese
• Published: 26.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

To provide an ultraviolet light emitting device in which an ultraviolet light emitting element is sealed and light extraction efficiency is improved.SOLUTION: An ultraviolet light emitting device 100 includes a substrate 110, an ultraviolet light emitting element 120, and a fluororesin layer 140. The fluororesin layer 140 includes an element covering portion 141 that covers a second surface 120b of the ultraviolet light emitting element 120, and a substrate covering portion 142 that covers a mounting surface 110a of the substrate 110. The substrate covering portion 142 includes a flat portion FS1 having a flat surface FS1a. A distance H1 from a point Q1 in the element covering portion 141 farthest from the second surface 120b of the ultraviolet light emitting element 120 to the second surface 120b of the ultraviolet light emitting element 120 is 1.3 times or more and 5 times or less a distance H2 from the flat surface FS1a of the flat portion FS1 of the substrate covering portion 142 to the mounting surface 110a of the substrate 110.SELECTED DRAWING: Figure 2 【課題】 紫外発光素子を封止するとともに光取り出し効率の向上を図った紫外発光装置を提供することである。【解決手段】 紫外発光装置１００は、基板１１０と、紫外発光素子１２０と、フッ素樹脂層１４０と、を有する。フッ素樹脂層１４０は、紫外発光素子１２０の第２面１２０ｂを覆う素子被覆部１４１と、基板１１０の実装面１１０ａを覆う基板被覆部１４２と、を有する。基板被覆部１４２は、平坦面ＦＳ１ａを有する平坦部ＦＳ１を有する。素子被覆部１４１における紫外発光素子１２０の第２面１２０ｂから最も離れている点Ｑ１から紫外発光素子１２０の第２面１２０ｂまでの距離Ｈ１が、基板被覆部１４２の平坦部ＦＳ１の平坦面ＦＳ１ａから基板１１０の実装面１１０ａまでの距離Ｈ２の１．３倍以上５倍以下である。【選択図】図２