A white light emitting material having a chemical structural formula represented by formula (I), a preparation method thereof and application thereof. The preparation method comprises subjecting tris(4-iodophenyl)amine and 4-methoxyphenylacetylene or tris(4-iodophenyl)amine and methyl 4-ethynylbenzoate to a coupling reaction under protection of a protective gas and catalysis of a Pd/Cu mixed catalyst, to obtain the white light emitting material. A novel temperature-sensitive light emitting material is synthesized through a one-step method. The material is applied to the field of diode luminescence based on the temperature-sensitive characteristic. White light luminescence can be finally realized only by reasonably controlling the temperature and duration time during heating a substrate. Compared with the existing art, the method greatly saves raw material costs and manufacturing process costs, and provides a novel idea and strategy for use of a white organic light emitting diode.

Lighting systems, methods, and devices for protecting human circadian neuroendocrine function during night use are described. Suitable lighting conditions can be provided for a working environment while protecting the circadian neuroendocrine systems of those occupying the illuminated workplace during the night. Lighting systems, methods, and devices can provide substantive attenuation of the pathologic circadian disruption in night workers. Lighting systems, methods, and devices can attenuate the specific bands of light implicated in circadian disruption. LED lighting systems, methods, and devices can provide increased intensity at a different portion of the spectrum than conventional LEDs, providing a useable white light even when unfavorable portions of the wavelength are attenuated by a notch filter. LED lighting systems, methods, and devices can switch between a daytime configuration and a night time configuration, wherein the daytime configuration provides unfiltered light and the night time configuration provides filtered light.

The present invention relates inter alia to a color display comprising nanoparticles and color filters.

Lighting systems, methods, and devices for protecting human circadian neuroendocrine function during night use are described. Suitable lighting conditions can be provided for a working environment while protecting the circadian neuroendocrine systems of those occupying the illuminated workplace during the night. Lighting systems, methods, and devices can provide substantive attenuation of the pathologic circadian disruption in night workers. Lighting systems, methods, and devices can attenuate the specific bands of light implicated in circadian disruption. LED lighting systems, methods, and devices can provide increased intensity at a different portion of the spectrum than conventional LEDs, providing a useable white light even when unfavorable portions of the wavelength are attenuated by a notch filter. LED lighting systems, methods, and devices can switch between a daytime configuration and a night time configuration, wherein the daytime configuration provides unfiltered light and the night time configuration provides filtered light.

The invention provides a light generating device (1000), wherein: (I) the light generating device (1000) comprises: (a) a first light source (110) configured to generate first light source light (111) having a first light source light spectral power distribution, wherein the first light source (110) comprises a first laser light source (10) configured to generate first laser light source light (11); (b) a first luminescent material (210) configured to convert at least part of the first light source light (111) into first luminescent material light (211) having a first luminescent material spectral power distribution having an emission at one or more wavelengths selected from the wavelength range of 590-780 nm, wherein the first luminescent material (210) is configured in an optical resonator (230); (II) the first light source (110) and the first luminescent material (210) are configured to generate first luminescent material laser light (1211) having a first luminescent material laser light spectral power distribution comprising at least part of the first luminescent material light (211); (III) the first light source light spectral power distribution and the first luminescent material laser light spectral power distribution mutually differ; and (IV) the light generating device (1000) is configured to generate in one or more operational modes white device light (1001) comprising the first luminescent material laser light (1211).

A light emitting device including a substrate, a first light emitter to emit light having a first color temperature, and a second light emitter to emit light having a second color temperature, in which the first light emitter has a first converter including first phosphors and a first resin, each first phosphor having different half-value widths, the second light emitter has a second converter including second phosphors and a second resin, each second phosphor having different peak wavelengths, at least one phosphor of the first converter has a half-value width of 33 nm to 110 nm, a distance between peak wavelengths of at least two phosphors of the second converter is 150 nm or less, at least one phosphor of the first converter has a particle size of 5 um to 50 um, and a thickness of the second converter is in 0.07 mm to 1.5 mm.

A backlight unit for a liquid crystal display device, the backlight unit including: an light emitting diode (“LED”) light source; a light conversion layer disposed separate from the LED light source to convert light emitted from the LED light source to white light and to provide the white light to the liquid crystal panel; and a light guide panel disposed between the LED light source and the light conversion layer, wherein the light conversion layer includes a semiconductor nanocrystal and a polymer matrix, and wherein the polymer matrix includes a first polymerized polymer of a first monomer including at least two thiol (—SH) groups, each located at a terminal end of the first monomer, and a second monomer including at least two unsaturated carbon-carbon bonds, each located at a terminal end of the second monomer.

A phosphor is specified. The phosphor has the general molecular formula:
(MA).sub.a(MB).sub.b(MC).sub.c(MD).sub.d(TA).sub.e(TB).sub.f(TC).sub.g(TD).sub.h(TE).sub.i(TF).sub.j(XA).sub.k(XB).sub.l(XC).sub.m(XD).sub.n:E.
In this case, MA is selected from a group of monovalent metals, MB is selected from a group of divalent metals, MC is selected from a group of trivalent metals, MD is selected from a group of tetravalent metals, TA is selected from a group of monovalent metals, TB is selected from a group of divalent metals, TC is selected from a group of trivalent metals, TD is selected from a group of tetravalent metals, TE is selected from a group of pentavalent elements, TF is selected from a group of hexavalent elements, XA is selected from a group of elements which comprises halogens, XB is selected from a group of elements which comprises O, S and combinations thereof, -E=Eu, Ce, Yb and/or Mn, XC=N and XD=C. The following furthermore hold true: a+b+c+d=t; e+f+g+h+i+j=u; k+l+m+n=v; a+2b+3c+4d+e+2f+3g+4h+5i+6j−k−2l−3m−4n=w; 0.8≤t≤1; 3.5≤u≤4; 3.5≤v≤4; (−0.2)≤w≤0.2 and 0≤m<0.875 v and/or v≥1>0.125 v.

A full-color silicon-based organic light-emitting diode structure includes a metal anode layer, an organic functional layer, a metal cathode layer, an encapsulation layer, and a color filter layer. The organic functional layer includes a light-emitting layer configured to emit white light. The light-emitting layer includes a red light-emitting unit, a blue light-emitting unit, a green light-emitting unit, and a light-emitting common transport layer. The red light-emitting unit and the blue light-emitting unit are vapor-deposited on the same fine metal mask, and other structural film layers are vapor-deposited on a common metal mask. The present disclosure overcomes problems that red, green, and blue spectra cannot appear at the same time due to different lengths of red, green, and blue resonant cavities, the color gamut of the product is low due to large intensity differences, and the product life is affected due to large light loss caused by the color filter.

Provided is an organometallic complex represented by general formula (1) below.

##STR00001##

In formula (1), X.sub.1 to X.sub.3 are each independently selected from a carbon atom and a nitrogen atom, and at least one of X.sub.1 to X.sub.3 is a nitrogen atom. The carbon atom has a hydrogen atom or a substituent. Y is an aryl group or a heterocyclic group. L is a bidentate ligand. When a plurality of L's are present, the plurality of L's may be the same or different. M is a metal atom selected from Ir, Pt, Rh, Os, and Zn. m represents an integer of 1 to 3, and n represents an integer of 0 to 2. R.sub.1 to R.sub.5 each represent a hydrogen atom or a substituent.