White Light Emitting Device with High Color Rendering Index

摘要

The present invention is a high color rendering white light emitting device, comprising a blue LED chip having an excitation wavelength of 440 nm to 460 nm, a phosphor layer that covers the light emitting surface of the blue LED chip, and is excited by the excitation wavelength of the blue LED chip to emit light. As a white light-emitting lamp, the phosphor layer may include a first phosphor having an emission peak wavelength of 480 to 499 nm; A second phosphor having an emission peak wavelength of 500 to 560 nm; And a third phosphor having an emission peak wavelength of 600 to 650 nm. According to the present invention, a white LED chip having high color rendering can be provided. In particular, special features such as R9 and R12 are provided. It is possible to provide a white light-emitting device having high color rendering to color.