Abstract:
The present invention relates to a light emitting device comprising a substrate (10), an N-type semiconductor layer (20) formed on the substrate (10), and a P-type semiconductor layer (40) formed on the N-type semiconductor layer (20), wherein a side surface including the N-type or P-type semiconductor layer (20,40) has a slope of 20 to 80°from a horizontal plane, and wherein the N-type semiconductor layer of one light emitting cell and the P-type semiconductor layer of another adjacent light emitting cell are electrically connected to each other. Accordingly, there is an advantage in that the characteristics of a light emitting device such as luminous efficiency, external quantum efficiency and extraction efficiency are enhanced and the reliability is secured such that light with high luminous intensity and brightness can be emitted.
Abstract:
PROBLEM TO BE SOLVED: To provide a flexible semiconductor element and a method of manufacturing the flexible semiconductor element.SOLUTION: A flexible semiconductor element includes: at least one vertical semiconductor element embedded in a flexible material layer; a first electrode formed on a first surface of the flexible material layer; and a second electrode formed on a second surface of the flexible material layer. A method of manufacturing the flexible semiconductor element includes a step of separating a flexible material layer, in which a vertical semiconductor element is embedded, from a substrate by weakening an adhesive force between a substrate layer and a buffer layer by using a difference in coefficients of thermal expansion of the substrate layer and the buffer layer.
Abstract:
A semiconductor light-emitting device (100) is provided. The semiconductor light-emitting device (100) may include a light-emitting structure (135), an electrode (115), an ohmic layer (150), an electrode layer (160), an adhesion layer (170), and a channel layer (140). The light-emitting structure (135) may include a compound semiconductor layer. The electrode (115) may be disposed on the light-emitting structure (135). The ohmic layer (150) may be disposed under the light-emitting structure (135). The electrode layer (160) may include a reflective metal under the ohmic layer (150). The adhesion layer (170) may be disposed under the electrode layer (160). The channel layer (140) may be disposed along a bottom edge of the light-emitting structure (135).
Abstract:
The present invention discloses a method for manufacturing a solid state light emitting device having a plurality of light-sources, the method comprising the steps of: providing a substrate having a growth surface; providing a mask layer on the growth surface, the mask layer having a plurality of openings through which the growth surface is exposed, wherein a largest lateral dimension of each of said openings is less than 0.3 mum and wherein the mask layer may comprise a first mask layer portion and a second mask layer portion, having the same surface area and comprising a plurality of openings wherein the first mask layer portion exhibits a first ratio between an exposed area of the growth surface and an unexposed area of the growth surface, and wherein the second mask layer portion exhibits a second ratio between an exposed area of the growth surface and an unexposed area of said growth surface, the second ratio being different from the first ratio; growing a base structure on the growth surface in each of the openings of the mask layer; and growing at least one light-generating quantum well layer on the surface of each of the base structures.
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor light emitting element.SOLUTION: A semiconductor light emitting element comprises: first and second conductive semiconductor layers having compositions of AlGaInP (0≤x≤1, 0≤y≤1, 0≤x+y≤1) or AlGaAs (0≤z≤1); and an active layer interposed between the first and second conductive semiconductor layers. At least one of the first and second conductive semiconductor layers comprises a low refractive index surface layer having a composition of (AlGa)InP (0.7≤v≤1) or AlInP (0≤w≤1) and having unevenness formed on at least a portion of a surface thereof.
Abstract:
PROBLEM TO BE SOLVED: To provide a light emitting element capable of improving the product yield, and a light emitting element package.SOLUTION: The light emitting element includes a first conductive semiconductor layer, an active layer on the first conductive semiconductor layer, a second conductive semiconductor layer on the active layer, a third semiconductor layer between the active layer and the second conductive semiconductor layer, and a light extraction structure on the second conductive semiconductor layer. A top surface of the third semiconductor layer has a Ga-face.