Patent ID: 7202599

Claim:
A white light light-emitting device comprising: a light-emitting chip, which functions as a light-emitting light source, and light emitted from the light source has a wavelength between 340 nm ˜495 nm; a macromolecular organic polymer is utilized to form an organic phosphor layer by means of adhering by evaporation onto a surface of the light-emitting chip; an encapsulated layer, which provides uniform diffused light, and encapsulates and thereby encloses the light-emitting chip and the organic phosphor layer; light emitted from the light source of the light-emitting chip excites the organic phosphor layer, which is thus affected to emit a second light having a wavelength different from that of the light-emitting light source, wavelengths of the second light and a portion of the light source that has not undergone excitation are mutually mixed within the encapsulated layer, thereby forming a mixed light, a plurality of nanograde crystal grains within the encapsulated layer affect focusing and refracting of light rays of the mixed light within the encapsulated layer, whereby the mixed light becomes even more uniformly mixed, and which is subsequently emitted outward from the encapsulated layer, thus attaining white light having superior uniformity and color rendering.