摘要:
Disclosed herein are an adhesive sheet comprising a cured acrylic polymer, hollow polymeric microspheres dispersed and ruptured in the cured acrylic polymer, and hollow parts formed by rupturing the hollow polymeric microspheres dispersed in the cured acrylic polymer, and a preparation method thereof.
摘要:
A method and structure for a CMOS device comprises depositing a silicon over insulator (SOI) wafer over a buried oxide (BOX) substrate, wherein the SOI wafer has a predetermined thickness; forming a gate dielectric over the SOI wafer; forming a shallow trench isolation (STI) region over the BOX substrate, wherein the STI region is configured to have a generally rounded corner; forming a gate structure over the gate dielectric; depositing an implant layer over the SOI wafer; performing one of N-type and P-type dopant implantations in the SOI wafer and the implant layer; and heating the device to form source and drain regions from the implant layer and the SOI wafer, wherein the source and drain regions have a thickness greater than the predetermined thickness of the SOI wafer, wherein the gate dielectric is positioned lower than the STI region.
摘要:
The present invention relates to pentaerythritol derivatives represented by the following formula 1, which improve moisture retaining ability of the stratum corneum when show high moisturizing ability even in dry conditions, to a preparation method thereof, and to a liquid crystal base containing the same. (Wherein R is the same or different, saturated or unsaturated, linear or branched alkyl groups of 1 to 24 carbon atoms having hydrogen or hydroxy group or not; m and n are the same or different integers of which m is 0 to 10 and n is 1 to 10).
摘要:
A method of manufacturing a flash memory device, including the steps of sequentially forming a tunnel oxide film, a first polysilicon layer, a nitride film, and a hard mask film on a semiconductor substrate, etching the hard mask film, the nitride film, the first polysilicon layer, and a predetermined region of the tunnel oxide films and then etching the exposed semiconductor substrate by a predetermined depth, thereby forming trenches, forming an oxide film on the entire structure so that the trenches are buried, polishing the oxide film and stripping the hard mask film, forming isolation films, etching the isolation films by a predetermined thickness, wherein when the nitride film is etched, the first polysilicon layer is also etched to form a trapezoid profile, stripping the nitride film remaining after the nitride film is etched, and forming a dielectric layer, and burying the entire top surface with a second polysilicon layer and a gate conductive film.
摘要:
A blower designed to reduce noise generated between impeller blades and diffuser blades positioned around the impeller blades upon rotation of an impeller, and a cleaner including the same are disclosed. The diffuser blades are non-uniformly spaced from each other in a circumferential direction such that interaction between the plurality of impeller blades and the plurality of diffuser blades become irregular upon rotation of the impeller. Distances between the impeller blades and the diffuser blades are non-uniform. With this construction, the blower and the cleaner are reduced in BPF noise, thereby enhancing performance thereof.
摘要:
The present invention provides an adhesive comprising an acrylic polymer resin and a flame-retardant filler, in which the content of unreacted residual monomers in the adhesive, which are parts of monomers for forming the acrylic polymer resin and remain unreacted after a preparation process of the adhesive, is 2% or less by weight. Also, the present invention provides an adhesive sheet formed by applying the adhesive to one or both sides of a substrate. In addition, the present invention provides a method of controlling the flame retardancy of the adhesive by adjusting the content of the unreacted residual monomers in the adhesive.
摘要:
The present invention discloses a method for manufacturing a flash memory device including the steps of: sequentially forming a first polysilicon film for a floating gate electrode, a first oxide film, a polysilicon film for a hard mask and a second oxide film on a semiconductor substrate; etching and patterning the second oxide film and the polysilicon film for the hard mask, by forming photoresist patterns on a predetermined region of the second oxide film, and removing the photoresist patterns; forming spacers on the sidewalls of the polysilicon film for the hard mask, by forming and etching a polysilicon film for forming spacers on the whole surface of the resulting structure; removing the exposed first oxide film and a predetermined thickness of second oxide film formed on the patterned polysilicon film for the hard mask; forming floating gate electrode patterns by performing first and second etching processes by using the patterned polysilicon film for the hard mask and the spacers as an etch mask; performing a cleaning process on the whole surface of the resulting structure, and removing the residual second oxide film at the same time; and forming control gate electrode patterns, by sequentially forming and patterning an ONO film, a second polysilicon film for a control gate electrode, a metal silicide film and a hard mask on the resulting structure on which the floating gate electrode patterns have been formed.
摘要:
The present invention relates to a method for manufacturing a flash memory device. In a flash memory device using a self-aligned shallow trench isolation (SA-STI) scheme, an amorphous silicon layer is formed on a gate oxide film and a SPG process is implemented to change the amorphous silicon layer to a first polysilicon layer having large grains. It is thus possible to improve a thinning condition of the gate oxide film.
摘要:
Gate oxides having different thicknesses are formed on a semiconductor substrate by forming a first gate oxide on the top surface of the substrate, forming a sacrificial hard mask over a selected area of the first gate oxide; and then forming a second gate oxide. A first poly layer may be formed on the first gate oxide, under the hard mask. After the hard mask is removed, a second poly layer may be formed over the second gate oxide and over the first poly layer. This enables the use of high-k dielectric materials, and the first gate oxide can be thinner than the second gate oxide.