Light-emitting device, white light-emitting device, illuminator, and image display
AssigneeMitsubishi Chemical Corporation
InventorsNaoto Kijima, Yasuo Shimomura, Hideaki Kaneda, Kimiya Takeshita
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AssigneeMitsubishi Chemical Corporation
InventorsNaoto Kijima, Yasuo Shimomura, Hideaki Kaneda, Kimiya Takeshita
Estimating the term…
To achieve a light-emitting device emitting light with high brightness, closer to natural light, and less color shift due to a small change in intensity of emitted light, in a light-emitting device including a light source emitting light by driving current and at least one wavelength-converting material absorbing at least part of the light from the light source and emitting light having a different wavelength, the color coordinate x1(17.5) and the color coordinate y1(17.5) of the light emitted at a driving current density of 17.5 A/cm2 and the color coordinate x1(70) and the color coordinate y1(70) of the light emitted at a driving current density of 70 A/cm2 satisfy the following Expressions (D) and (E): −0.006≦x1(17.5)−x1(70)≦0.006 (D), −0.006≦y1(17.5)−y1(70)≦0.006 (E).
A white light emitting device comprising:
Dependencies are inferred from the claim text.