Manufacturing method and device for white light emitting

摘要

A manufacturing method and device for white light emitting comprise at least two light emitting layers capable of emitting the light with the wavelengths of lambda 1 and lambda 2 . Upon absorbing the light with the wavelength of one light emitting layer by at least one kind of fluorescent material, the light with the wavelength of lambda 3 is emitted and then mixed together with the light with the other wavelength so as to output the white light for use. Then, the fluorescent material formed on the light emitting layer of the light emitting device is packed together with said light emitting device, and then the assembly is the white light emitting device with high color rendering index of this invention.