Abstract: The present invention relates to an artificial marble comprising a base resin part; and a pearl stripe part which contains a matrix resin and pearls, and expresses stripes on said base resin part by the contained pearls and a process for preparing the same. The present invention may provide an artificial marble, which can embody higher grade appearance effects by concentrating pearl into the parts expressing stripes of the artificial marble and freely regulating color, quality of pearl and/or patterns of stripes, and a process for preparing the same.

Abstract: A method for manufacturing a semiconductor device comprises: etching a semiconductor substrate to form a plurality of pillars; depositing a first protective film on the sidewalls of the pillar; first etching the semiconductor substrate with the pillar deposited with the first protective film as a mask; forming a first insulating film on the sidewalls of the pillar and the first etched semiconductor substrate; second etching the semiconductor substrate with the pillar including the first insulating film as a mask; forming a second protective film and a second insulating film on the surface of the second etched semiconductor substrate; depositing a barrier film on the sidewalls of the pillar including the second insulating film; and removing the first insulating film, the second insulating film and the barrier film disposed at one sidewall of the pillar to form a contact hole defined by the first protective film and the second protective film.

Abstract: Disclosed herein are an artificial marble using multicolor chips, particularly striped chips, and a method for preparing the artificial marble. Since the artificial marble comprises multicolor chips in a new form together with conventional single-color chips, it enables achievement of various appearances, including designs and colors, thereby being highly differentiated from conventional artificial marbles containing combination of single-color chips as well as displaying patterns and designs closely resembling natural granite.

Abstract: A semiconductor device having a vertical channel transistor and a method for manufacturing the same are provided. In the semiconductor device, a metal bit line is formed between vertical channel transistors, and the metal bit line is connected to only one of the vertical channel transistors through an asymmetric bit line contact. Through such a structure, the resistance of the bit line can be improved and the process margin for formation of the bit line can be secured.

Abstract: The present invention relates to an artificial marble comprising a base resin part; and a pearl stripe part which contains a matrix resin and pearls, and expresses stripes on said base resin part by the contained pearls and a process for preparing the same. The present invention may provide an artificial marble, which can embody higher grade appearance effects by concentrating pearl into the parts expressing stripes of the artificial marble and freely regulating color, quality of pearl and/or patterns of stripes, and a process for preparing the same.

Abstract: Disclosed herein are an artificial marble using multicolor chips, particularly striped chips, and a method for preparing the artificial marble. Since the artificial marble comprises multicolor chips in a new form together with conventional single-color chips, it enables achievement of various appearances, including designs and colors, thereby being highly differentiated from conventional artificial marbles containing combinations of single-color chips as well as displaying patterns and designs closely resembling natural granite.

Abstract: Disclosed herein are an artificial marble using multicolor chips, particularly striped chips, and a method for preparing the artificial marble. Since the artificial marble comprises multicolor chips in a new form together with conventional single-color chips, it enables achievement of various appearances, including designs and colors, thereby being highly differentiated from conventional artificial marbles containing combinations of single-color chips as well as displaying patterns and designs closely resembling natural granite.

Abstract: Disclosed herein are an artificial marble using multicolor chips, particularly striped chips, and a method for preparing the artificial marble. Since the artificial marble comprises multicolor chips in a new form together with conventional single-color chips, it enables achievement of various appearances, including designs and colors, thereby being highly differentiated from conventional artificial marbles containing combinations of single-color chips as well as displaying patterns and designs closely resembling natural granite.

Abstract: Provided are a resin composition, comprising 100 parts by weight of a styrene-methylmethacrylate resin solution containing a styrene-methylmethacrylate copolymer and at least one of styrene and methylmethacrylate; 100 to 200 parts by weight of an inorganic filler; and 0.5 to 10 parts by weight of a cross-linkable monomer; and an artificial marble prepared using the same and a process for preparing the same. The resin composition can provide an artificial marble having improved transparency due to reduction of refractive index difference between aluminum hydroxide and methylmethacrylate while maintaining excellent weatherability and thermal characteristics possessed by a conventional acrylic polymer.