Method for manufacturing light-emitting element and apparatus for manufacturing light-emitting element

Abstract

A method of manufacturing a light-emitting device which includes a light-emitting source by applying, onto the light-emitting source, a fluorescent resin which includes fluorescent particles and is stored in and discharged from an applicator, the method includes: measuring a first concentration which is a concentration of the fluorescent particles included in the fluorescent resin discharged from the applicator; and applying, onto the light-emitting source, the fluorescent resin in an application amount determined based on the first concentration which has been measured and reference data which indicates a relationship between a concentration of the fluorescent particles and an application amount of the fluorescent resin that enables the light-emitting device to have constant chromaticity.

Description

technical field [0001] The present invention relates to a method of manufacturing a light emitting element having a light emitting source such as an LED (Light Emitting Diode) chip, and a manufacturing apparatus of the light emitting element. Background technique [0002] Conventionally, research and development of a light-emitting element obtained by combining an LED chip as a light-emitting source and phosphor particles (fluorescent pigments, fluorescent dyes, etc.) Light excitation emits light of a color different from that of the LED chip (for example, refer to Patent Document 1). [0003] As such a light-emitting element, a white light-emitting element (generally called a white LED) is commercialized, for example, an LED chip that emits blue light or ultraviolet light, and a blue light or the like that performs wavelength conversion to emit yellow light. The phosphor particles of the light combine to obtain white light. [0004] In Patent Document 1, as an example of ...

AI Technical Summary

Problems solved by technology

[0016] However, even if a light-emitting element is manufactured by ejecting a constant weight of fluorescent resin from the air pressure distributor 107, the chromaticity of the manufactured light-emitting element may not become a constant value.

That is, in the conventional manufacturing equipment, there is a problem that the chromaticity of the manufactured light-emitting element varies.

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