WAVELENGTH CONVERSION COMPOSITION AND LIGHT-EMITTING DEVICE

• Main Authors: SASAKI AKITOSHI, KANAZAWA YOSHINORI, WATANABE KOSUKE
• Format: Patent
• Language: English; Japanese
• Published: 15.11.2018
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DYES; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PAINTS; PHYSICS; POLISHES; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide: a wavelength conversion composition which exhibits a high quantum yield and excellent durability and has capability of converting an incoming beam into an outgoing beam of a target wavelength; and a light-emitting device using the wavelength conversion composition.SOLUTION: A wavelength conversion composition to convert light of an incoming beam into light of a longer wavelength comprises photoluminescent phosphors and a binder resin, where at least one of the photoluminescent phosphors is a specific compound represented by the formula in the figure. (X, X, R, Rand Rare a halogen atom, alkyl group, or the like; Qand Qare O, S, or the like; L is a monocyclic or polycyclic arylene group; and p is an integer from 0 to 5.)SELECTED DRAWING: None 【課題】高い量子収率と優れた耐久性とを示し、入射光を目的とする波長の出射光に変換する性能を有する波長変換組成物、および、この波長変換組成物を用いた発光装置の提供。【解決手段】入射光の光をより長波長の光に変換する、フォトルミネセンス蛍光体とバインダー樹脂とを含有する波長変換組成物であって、フォトルミネセンス蛍光体の少なくとも１種が特定の下式で表わされる化合物である。（X1、X2、R1、R2、R3はハロゲン原子、アルキル基等。Q1、Q2はＯ、Ｓ等。Lは単環、複環のアリーレン基。pは０〜５の整数。）【選択図】なし