Abstract:
PURPOSE: A semiconductor nanocrystal-polymer composite particle is provided to secure thermal stability of a semiconductor nanocrystal by containing an optimal proportion of semiconductor nanocrystal, polymer having a carboxylate anion group(-COO-), and metal positive ions. CONSTITUTION: A semiconductor nanocrystal-polymer composite particle comprises a semiconductor nanocrystal, a polymer having carboxylate anions, and metal positive ions. The polymer having a carboxylate anion group can bind to the surface of the semiconductor nanocrystal, and the metal cation can bind to the carboxylate anion group. 50-10,000 parts by weight of the polymer having a carboxylate anion group are included based on 100.0 parts by weight of the semiconductor nanocrystal. The polymer having a carboxylate anion group includes a structure unit which has 1-100 mol% of carboxylate anion groups. The polymer having a carboxylate anion group has a melting point(Tm) in a 50-400°C range. The metal positive ion exists as 0.1-1.5 mol based on 1 mol of the carboxylate anion of the polymer.
Abstract:
PURPOSE: An optoelectronic device and a laminated structure are provided to improve the lifetime of a device by blocking oxygen or moisture from the outside. CONSTITUTION: A light emitting layer is positioned on light source. The light emitting layer includes luminous particles(110). A macromolecular film(116) is formed at the upper part of the light emitting layer. The macromolecular film includes a first polymer layer(116a) and a second polymer layer(116b). The first polymer layer includes a first polymer of SH radical and a second polymer or oligomer.
Abstract:
PURPOSE: A composition for light-emitting particle-polymer composite is provided to improve the initial efficiency and the life time of a device, and to have excellent stability. CONSTITUTION: A composition for light-emitting particle-polymer composite comprise: a luminous particle; a first monomer having at lest two thiol(SH) groups in the end; and a second monomer having at least two carbon-carbon unsaturated bonds in the end. The luminous particle is selected from nanocrystal, fluorescent material, pigment, or combination thereof. The amount of the first monomer and the second monomer is 80-99.9wt% on the basis of total amount of the composite. The luminous particle is carboxyl group or luminous particle pre-coated by a polymer, which contains the salt of the carboxyl group.
Abstract:
LED 광원상기 LED 광원과이격되어설치된광확산구조체와상기광확산구조체의내표면및 외표면중적어도하나의표면에위치하여상기 LED 광원으로부터입사된광을백색광으로전환시키는광전환층을포함하고, 상기광전환층은반도체나노결정을포함하는적층구조체및 상기광전환층의표면에위치하는유기배리어층을포함하는 LED 패키지를제공한다.
Abstract:
액정디스플레이장치용백라이트유닛과이를포함하는액정디스플레이장치가개시된다. 상기백라이트유닛은 LED 광원; 상기 LED 광원에이격되게설치되어상기 LED 광원으로부터입사된광을백색광으로전환시켜액정패널쪽으로출사시키는광전환층; 및상기 LED 광원과광전환층사이에위치하는도광판(light guide panel)을포함하고, 상기광전환층은반도체나노결정과매트릭스고분자를포함하고, 상기반도체나노결정은반도체나노결정과친화성이있는작용기를가지는고분자로코팅되어있다.