WAVELENGTH CONVERSION MEMBER, LIGHT EMITTING DEVICE, IMAGE DISPLAY DEVICE, AND METHOD FOR MANUFACTURING WAVELENGTH CONVERSION MEMBER

• Main Authors: RYOWA, TATSUYA, KINOMOTO, JUNICHI
• Format: Patent
• Language: English; French; German
• Published: 09.01.2013
• Subjects: ADHESIVES; ADVERTISING; BASIC ELECTRIC ELEMENTS; CHEMISTRY; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DEVICES USING STIMULATED EMISSION; DISPLAY; DISPLAYING; DYES; EDUCATION; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; SEALS; SEMICONDUCTOR DEVICES; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

Disclosed is a wavelength conversion member (10A) that is provided with: a light transmissive member (13) including a light input plane (11) into which excitation light (100) is inputted, and a light output plane (12) from which wavelength converted light (200) is outputted; and a semiconductor fine particle phosphor (14), which is dispersed in the light transmissive member (13), and which absorbs the excitation light (100), converts the wavelength, and emits light. The dispersion concentration of the semiconductor fine particle phosphor (14) in the direction parallel to the light traveling direction, i.e., the direction connecting the light input plane (11) and the light output plane (12), is lower than the dispersion concentration of the semiconductor fine particle phosphor (14) in the direction orthogonal to the light traveling direction.