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Patent
Korea Institute of Industrial Technology | Date: 2015-01-16

The present invention relates to a display device that includes a cover part; a driving unit for transmitting an external force to the human body through the cover part; and a display unit that is provided in contact with the cover part, and indicates a display in accordance with the external force transmitted from the driving unit.


Patent
Korea Institute of Industrial Technology | Date: 2014-12-19

The present invention relates to a multi-layered composite material manufactured by thermocompressing a multi-layered sheet, comprising: a first sheet layer formed from a solution containing nanofibrillated cellulose and a first thermoplastic matrix polymer; and a second sheet layer formed from a solution containing a second thermoplastic matrix polymer. The multi-layered composite material of the present invention has the high strength and high elastic modulus.


Patent
Korea Institute of Industrial Technology | Date: 2014-09-01

The present invention provides a method of manufacturing composite material, comprising the steps of: coating a thermally conductive composition on a surface portion of a metal material in at least one configuration from among a paste, film, and tape; and friction stirring the metal material, coated with the thermally conductive composition, at least once, and reacting at least a part of the surface portion of the metal material with the thermally conductive composition to form a composite material.


Patent
Korea Institute of Industrial Technology | Date: 2014-09-26

Provided is a selective catalytic reduction (SCR) catalyst containing a carbon material loaded with vanadium and tungsten and a method of preparing the same, and relates to a method of loading vanadium and tungsten on a carbon material that exhibits excellent abrasion resistance and excellent strength and can be easily prepared.


Patent
Korea Institute of Industrial Technology | Date: 2014-12-30

Disclosed is a liquid precursor delivery system that enables a thin film deposition process to be performed at a low temperature like 350 C. or lower in a process of manufacturing semiconductor devices or displays. The liquid precursor delivery system includes an aerosol generator, a vaporizer, and a vapor storage tank. The aerosol generator changes a liquid precursor into an aerosol precursor using ultrasonic vibrations. The vaporizer has a heater block in which a plurality of sloped plate-shaped heaters is arranged in a zigzag form and in which the aerosol precursor changes into a gas precursor by colliding with the heaters and thus obtaining heat energy. The vapor storage tank stores the gas precursor while maintaining a constant pressure and temperature of the gas precursor and delivers the gas precursor to a process chamber when a thin film deposition process is performed.


The present invention relates to a novel epoxy compound, a method for preparing same, a composition and cured product comprising same, and use thereof, wherein the compound shows excellent heat-resistant propertiesspecifically, a low thermal expansion property and a high glass transition temperature (including Tg-less which does not show a glass transition temperature), a flame retardant property and processabilityspecifically, a viscosity-control property, does not require a separate silane coupling agent, and has improved brittleness in a composite. According to one aspect of the present invention, provided are: an epoxy compound having at least one non-reactive silyl group, alkenyl group or combination thereof together with at least two epoxy groups and at least one alkoxysilyl group; a method for preparing the epoxy compound through alkoxysilylation and alkylsilylation; an epoxy composition comprising same; and a cured product.


Patent
Korea Institute of Industrial Technology | Date: 2016-10-12

A method of manufacturing an iron bus bar includes preparing an iron core and forming a copper layer having a thickness of 10 to 30 m on the iron core by coating. The manufactured iron bus bar has high strength and durability as well as excellent electrical conductivity can be manufactured at low cost.


One embodiment of the present invention relates to a method for manufacturing solar cells having a nano-micro composite structure on a silicon substrate and solar cells manufactured thereby. The technical problem to be solved is to provide a method for manufacturing solar cells and solar cells manufactured thereby, the method being capable of forming micro wires in various sizes according to the lithographic design of a photoresist and forming nano wires, which have various sizes and aspect ratios, by adjusting the concentration of a wet etching solution and immersion time. To this end, the present invention provides a method for manufacturing solar cells and solar cells manufactured thereby, the method comprising the steps of: preparing a first conductive semiconductor substrate having a first surface and a second surface; patterning a photoresist on the second surface of the first conductive semiconductor substrate such that the plane form of the photoresist becomes a form in which multiple horizontal lines and multiple vertical lines intersect each other; electrolessly etching the semiconductor substrate so as to form a micro wire having a width of 1-3 m and a height of 3-5 m in a region corresponding to the photoresist and to form multiple nano wires having a width of 1-100 nm and a height of 1-3 m in a region not corresponding to the photoresist; doping the micro wire and nano wires with a second conductive impurity by using POCl_(3); forming a first electrode on the first surface of the semiconductor substrate; and forming a second electrode on the micro wire, wherein the efficiency of the solar cells is 10-13%, the efficiency being the ratio of output to incident light energy per unit area.


Patent
Korea Institute of Industrial Technology | Date: 2016-02-05

The present invention relates to a medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers as prepared by the paper making process, a preparation method thereof, and an adhesion prevention barrier using the same. The present invention provides a single phase of medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers, to induce capillary action of micropores formed between the fibers and thereby control the gelation time, and provides a composite nonwoven fabric formed by laminating a nonwoven fabric layer comprising a different kind of biodegradable polymer material not susceptible to gelation on the single-phase of medical nonwoven fabric comprising gelable cellulose derivative short-cut fibers, thereby improving dimensional stability and convenience of surgical procedure. The present invention further provides a dyed medical nonwoven fabric to improve visibility, allowing easiness of recognizing the placement or location of the medical nonwoven fabric. Further, the single-phase nonwoven fabric or the composite nonwoven fabric, which makes it possible to efficiently control the gelation time by way of capillary action of the micropores formed between the fiber in the nonwoven fabric, can also be used as an adhesion prevention barrier with improved convenience of surgical procedure and post-surgical adhesion, in contrast to the conventional knit or film type adhesion prevention barrier.


The present invention relates to a novolac hardener having an alkoxysilyl group, the novolac hardener exhibiting excellent heat resistance characteristics, such as a low coefficient of thermal expansion (CTE) and an increase in the glass transition temperature, when forming a composite; a method for preparing the same; a composition containing the same; a hardened product; and a use thereof. According to an embodiment of the present invention, provided are a novolac hardener having an alkoxysilyl group of chemical formulas I-1 to I-4; a method for preparing the novolac hardener having an alkoxysilyl group of chemical formulas I-1 to 1-4 through alkenylation and alkoxysilylation of the novolac hardener; a method for preparing the novolac hardener having an alkoxysilyl group of chemical formulas I-1 to 1-4 through alkoxysilylation of the novolac hardener; a composition containing the novolac hardener having an alkoxysilyl group of chemical formulas I-1 to I-4; a hardened product thereof; and a use thereof. A composite comprising the novel hardener having an alkoxysilyl group according to the present invention exhibits a low CTE and a high glass transition temperature through a chemical bond between the alkoxysilyl group of the hardener and a phenol or epoxide group as well as a chemical bond between the alkoxysilyl group of the hardener and a filler.

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