摘要:
In a semiconductor laminated structure, a base substrate has a nitride semiconductor crystal plane in an upper surface thereof. A growth blocking film encloses a flow-through pattern which is extended horizontally on the base substrate at a predetermined interval. A nitride semiconductor crystal layer is formed on the base substrate to contact the upper surface thereof between regions of the flow-through pattern and covers the grow blocking film. The semiconductor laminated structure is employed to obtain a nitride semiconductor crystal layer, nitride semiconductor crystal substrate and nitride semiconductor device exhibiting fewer defects and high quality.
摘要:
Provided are an apparatus for attaching and detaching a cap for optical disc spin-coating that can be easily attached to and detached from the cap for covering a center hole of an optical disc by including a permanent magnet when contaminated by a photocurable resin, an apparatus for spin-coating including the same, and a method of manufacturing an optical disc using the apparatus for attaching and detaching a cap for optical disc spin-coating. By using the apparatus for attaching and detaching a cap for optical disc spin-coating, the cap can be easily attached to and detached from the optical disc before and after the spin coating even when the viscosity of the photocurable resin is high. In addition, the use of the apparatus for optical disc spin coating and the method of manufacturing the optical disc results in high manufacturing efficiency.
摘要:
A spin coating apparatus is provided. The spin coating apparatus includes a ring-shaped or polygonal member. An upper portion of the ring-shaped or polygonal member has an inclined portion extending downward and outward, and an inner portion of the inclined portion is adjacent to or in contact with an outer edge of a substrate. An inner side surface of the ring-shaped or polygonal member is inclined downward and outward. When a surface of the substrate is coated with a coating solution using the spin coating apparatus, a ski-jump phenomenon occurring at an outer edge of the substrate can be reduced and contamination of the substrate due to the coating solution can be prevented.
摘要:
Disclosed are a primer composition having photochromic property and impact resistance for coating transparent materials and a photochromic transparent material having a primer layer formed by coating and curing the primer composition. The primer composition for coating transparent materials comprises: a) 5-90 parts by weight of a polyurethane containing Brønsted salt; b) 5-50 parts by weight of a polyepoxy resin; and c) 140 parts by weight of a photochromic dye, based on 100 parts by weight of the total primer composition. The photochromic transparent material having a primer layer formed by coating and curing the primer composition shows excellent photochromic property and impact resistance.
摘要:
A method of fabricating a semiconductor device wherein the step difference of an insulating layer surface is effectively eliminated to completely planarize a surface of the insulating layer by DHF dipping treatment after completion of the insulating layer planarization.