Abstract: Disclosed are a method for preparing a fluorescent nanomaterial-polymer composite and a wavelength converting element, and a light emitting device. The method for preparing the fluorescent nanomaterial-polymer composite includes: at least one precursor provided, the precursor includes a fluorescent nanomaterial and a polymer; and in a first temperature at or higher than a melting point of the polymer, the precursor is mixed, and then cooled.

Abstract: The present application discloses a method for preparing an indium phosphide (InP) nanocrystal by using a novel phosphorus precursor as a raw material, and an InP nanocrystal having different wavelengths prepared by the method. The preparation method of the InP nanocrystal includes a step of: using M-(O—C?P)n as one of reaction precursors, where, M is a metal element, and n is a valence state of the M element. In this present application, M-(O—C?P)n serves as one of reaction precursors; due to that the metal element M and the element P are from the same reaction precursor, a nanocrystal of a nanocrystal core containing In, P and a metal element M can be prepared.

Abstract: A liquid crystal display (LCD) device containing a layer of patterned photoluminescent nanoparticles, which can emit highly saturated color lights when excited with backlights, is disclosed in this invention. The patterned photoluminescent nanoparticle layer is disposed between the backlight and the liquid crystal. The display device can improve the light utilization efficiency for 3 times thus saving reduce the backlight power consumption to ? or being 3 times brighter at the same power consumption from conventional LCD displays. The display also can produce an ultra-wide color gamut up to 95% of the CIE 1976 color space or 165% of NTSC color gamut. The display is capable of switching between 2-dimensional and 3-dimensional viewing modes without any hardware structures changes applied.

Abstract: A nanocrystal preparation method comprises the following steps: dissolving, in a first selected solvent, a first precursor which is in a gaseous state under normal temperature and normal pressure, to form a first precursor solution; dissolving a second precursor in a second selected solvent to form a second precursor solution, wherein the second precursor is a precursor of a metal element of Group I, Group II, Group III or Group IV; and in an inert gas atmosphere, adding the first precursor solution into a reaction vessel which contains the second precursor solution, wherein the first precursor chemically reacts with the second precursor to generate a nanocrystal. The present invention further discloses a nanocrystal prepared by the above method and an apparatus for preparing and storing a gas-dissolved solution.