Abstract: A patterned epitaxial structure laser lift-off device, including a substrate, reshaping structures, a transmittance adjustment structure, a patterned epitaxial structure, gas transmission systems, an ultraviolet source, a lift-off chamber and a light entry window. The gas transmission systems are at two sides of the lift-off chamber; the light entry window is on the lift-off chamber; the ultraviolet source is above the outside of the light entry window; the patterned epitaxial structure is inside the lift-off chamber; the substrate is on the patterned epitaxial structure. The patterned epitaxial structure includes an epitaxial structure, a sapphire substrate, patterned structures, oblique interfaces and planar interfaces, several patterned structures being uniformly designed on the epitaxial structure, each of the patterned structures being a V-shaped groove structure formed by two oblique interfaces, two adjacent patterned structures being connected by means of a planar interface.

Abstract: A patterned epitaxial structure laser lift-off device, including a substrate, reshaping structures, a transmittance adjustment structure, a patterned epitaxial structure, gas transmission systems, an ultraviolet source, a lift-off chamber and a light entry window. The gas transmission systems are at two sides of the lift-off chamber; the light entry window is on the lift-off chamber; the ultraviolet source is above the outside of the light entry window; the patterned epitaxial structure is inside the lift-off chamber; the substrate is on the patterned epitaxial structure. The patterned epitaxial structure includes an epitaxial structure, a sapphire substrate, patterned structures, oblique interfaces and planar interfaces, several patterned structures being uniformly designed on the epitaxial structure, each of the patterned structures being a V-shaped groove structure formed by two oblique interfaces, two adjacent patterned structures being connected by means of a planar interface.

Abstract: Disclosed are an LED chip structure and its manufacturing method, and a mass transfer method applying the LED chip structure. The LED chip structure includes a substrate, a light emitting unit connected to the substrate, a passivation layer, an ohmic contact layer, and a metal layer formed at the junction of the light emitting unit and the substrate. The passivation layer surrounds the periphery of the light emitting unit and is connected to the metal layer, and the ohmic contact layer is covered onto the passivation layer and connected to the light emitting unit. The LED chip structure has the features of reasonable design and convenient transfer; the manufacturing method has the features of simple manufacture process, easy manufacture, and compact LED chip structure; and the mass transfer method applying the LED chip structure has the features of simple operation, easy alignment, and convenient transfer.

Abstract: The invention provides a process for the living free radical addition polymerization of one or more ethylenically unsaturated monomers using at least one free-radical polymerization initiator and in the presence of one or more stable N-oxyl radicals, wherein at least one stable N-oxyl radical has polymerizable double bonds. The invention additionally provides polymers obtainable by this process, having a polydispersity index PDI of from 1.0 to 1.8, and provides for the use of stable N-oxyl radicals having polymerizable double bonds in the living free radical addition polymerization of one or more different ethylenically unsaturated monomers.

Abstract: Polymers obtainable by a process for the living free radical polymerization of one or more ethylenically unsaturated monomers with the use of at least one free radical polymerization initiator and in the presence of one or more stable N-oxyl radicals, at least one stable N-oxyl radical having polymerizable double bonds, are used for processing to give moldings, films, fibers and foams.