Lg Chem, Ltd

Electronics and Telecommunications Research Institute

Nanotech & Beyond Co., Ltd.

Sang-Ho Kim

Hyeon Sik Choi

Hyun-Sik Kim

Jae-Seung Oh

Byoung-Bae Lee

Woo-Ram Lee

Won-Jong Kwon

Sang-Bok Lee

Sun-Ah Park

Sung-Ho Yoon

Shin-Jung Choi

Yun-Il Hwang

So-Won Kim

Sang-joon Park

Ji-Young Hwang

Tae-Su Kim

Min-Seo Kim

Jung-Ho Park

Jie-Hyun Seong

Sin-Chong Park

Kee-Soo Nam

Jae-Duk Park

Soo-Yeon Heo

Jong-Taik Lee

Kyoung-Su Jeon

Jong-Wuk Park

Chang-Wan Bae

Dong Min Seo

Suk-Sik Moon

Ki-Seok Jang

Young-Soo Lim

Su-Jin Mun

Young-Hee Lim

The present invention relates to a method for preparing a carbon-based particle/copper composite material in which carbon-based particles such as graphite and copper are mixed, the method including mixing a solution of a polymer organic compound having a main chain of carbon and a copper precursor in a solvent, with a dispersion solution of carbon-based particles in a first dispersion medium to produce a mixture, adding a first reducing agent to the mixture to form composite particles in which copper (I) oxide particles are attached to the surface of the carbon-based particles, and sintering the composite particles under a non-oxidizing atmosphere. According to the preparing method, a composition material is obtained, in which carbon-based particles and copper are well mixed.

Method for preparing carbon-based particle/copper composite material

Provided is a method for producing Ag nanowires, including, heating a precursor solution that includes: an Ag salt; a water-soluble polymer; a surfactant, or a halide of metal ions having a standard reduction potential of &#x2212;0.1 to &#x2212;0.9V as a metal catalyst; and a reduction solvent, to produce the Ag nanowires. According to this method, a time for synthesizing nanowires may be considerably decreased, and an amount of Ag precursor discarded without reaction may be effectively reduced. As a result, the Ag nanowires may be produced with high efficiency and mass-production thereof through a simple scale-up may be successfully achieved.

Method for manufacturing silver nanowires

The present invention relates to a conductive metal ink composition which is properly applied for roll-printing process to form conductive pattern, and the method of preparing a conductive pattern using the same. The conductive metal ink composition comprises a conductive metal powder; a non-aqueous solvent comprising a first non-aqueous solvent having a vapor pressure of 3 torr or lower at 25&#xb0; C. and a second non-aqueous solvent having a vapor pressure of higher than 3 torr at 25&#xb0; C.; and a coatability improving polymer and is coated for forming the conductive pattern by the roll printing method.

Conductive metal ink composition and method for forming a conductive pattern

A method for preparing an electroconductive patterned copper layer, comprising mixing copper-based particles with a reducing agent, and then adding a solvent thereto to prepare a reducing agent-containing copper-based particle dispersion solution; printing on or filling in the reducing agent-containing copper-based particle dispersion solution a substrate in a predetermined shape to form a reducing agent-containing copper-based particle patterned layer; and firing the reducing agent-containing copper-based particle patterned layer in the air, which allows forming a patterned copper layer with excellent electric conductivity even in the air, thereby being industrially very useful.

Preparation method for an electroconductive patterned copper layer

A preparation method of an electroconductive copper patterning layer includes (Step 1) preparing a dispersion solution of copper-based particles selected from the group consisting of copper particles, copper oxide particles, and their mixtures; (Step 2) forming a copper-based particle patterning layer by printing or filling the dispersion solution of copper-based particles to a substrate into a predetermined shape; and (Step 3) irradiating laser to the copper-based particle patterning layer to burn and interconnect the copper-based particles contained in the copper-based particle patterning layer. This preparation method burns a copper-based particle patterning layer with a strong energy within a short time by using laser. Thus, it is possible to obtain a copper patterning layer that is hardly oxidized even in the atmosphere, so a copper patterning layer with excellent electric conductivity is formed.

Preparation method of electroconductive copper patterning layer by laser irradiation

A CuO spherical assembly particle composition is composed of CuO spherical assembly particles, each of which is formed by agglomerating a plurality of CuO ultrafine particles that have an average diameter in the range from 1 to 100 nm and a standard deviation on the diameter in the range from 0 to 10%. The CuO spherical assembly particles have an average diameter in the range from 0.1 to 10 &#x3bc;m and a standard deviation on the diameter in the range from 0 to 40%. This CuO spherical assembly particle composition is composed of CuO assembly particles with excellent uniformity, so it shows excellent properties such as realizing a good electric conductivity during a curing process for wiring. Accordingly, the spherical CuO assembly particle composition may be usefully used as precursors for solar energy conversion, magnetic storage medium, catalyst, gas sensor, and copper wire formation.

Spherical assembly particle composition of cuprous oxide and preparation method thereof

A preparation method of a copper particle composition includes dissolving a copper carboxyl compound, or a carboxyl group-containing compound and a copper salt, in a solvent to prepare a copper(II) precursor solution; putting a weak reducing agent with a standard reduction potential of &#x2212;0.2 to &#x2212;0.05V to the prepared copper(II) precursor solution to assemble a plurality of CuO fine particles having an average diameter of 1 to 100 nm with a standard deviation of 0 to 10%, thereby forming spherical CuO assembly particles having an average diameter of 0.1 to 10 &#x3bc;m with a standard deviation of 0 to 40%; reducing the spherical CuO assembly particles into copper particles by using a reducing agent; and separating the copper particles from the result product. Thus, copper particles can be produced fast, economically, and the obtained copper particles have good crystallinity and good resistance against oxidation.

Preparation method of copper particle composition

Provided are a method for preparing an electrode system, an electrode system prepared therefrom, and an electric device including the same. The method includes the steps of forming a porous template having nanopores on a first electrode, wherein a diameter of the nanopores is between 5 to nm 500 nm; and forming a rod-type/tube-type second electrode inside the nanopores which are connected to the first electrode, the electrode system prepared therefrom, and an electric device including the same. With the large surface area, the electrode system of the present research improves efficiency and performance of various electric devices. The contrast and respond speed of the electrochromic device can be increased, and the number of electron-hole pairs of a solar cell is increased. The loss of electron-hole pairs is minimized, and charge storage of the supercapacitor and charge respond speed is heightened.

Method for preparing electrode system, electrode system prepared therefrom, and electric device comprising the same

The present invention relates to an electropolymerization method for preparing a nanotube-type conducting polymer using a porous template, a method for preparing an electrochromic device using electrochromism of the conducting polymer, and an electrochromic device prepared therefrom, and more particularly to an electropolymerization method for preparing a nanotube-type conducting polymer using a porous template to prepare an electrochromic device having good electrochromism by injecting an electrolyte solution wherein a precursor of the electrochromic conducting polymer is dissolved into an electrochemical reaction cell comprising a first transparent electrode and a working electrode, which is a porous template on the electrode, a method for preparing an electrochromic device using electrochromism of the conducting polymer, and an electrochromic device prepared therefrom.

Electropolymerization method for preparing nano-tube type conducting polymer using porous template, method for preparing electrochromic device, and electrochromic device prepared therefrom

The present invention relates to an electropolymerization method for preparing a nanotube-type conducting polymer using a porous template, a method for preparing an electrochomic device using electrochromism of the conducting polymer, and an electrochromic device prepared therefrom, and more particularly to an electropolymerization method for preparing a nanotube-type conducting polymer using a porous template to prepare an electrochromic device having good electrochromism by injecting an electrolyte solution wherein a precursor of the electrochromic conducting polymer is dissolved into an electrochemical reaction cell comprising a first transparent electrode and a working electrode, which is a porous template on the electrode, a method for preparing an electrochromic device using electrochromism of the conducting polymer, and an electrochromic device prepared therefrom.

A process for formation of a large area flat panel display, and particularly a process for formation of a large area flat panel display using a side junction is disclosed, in which a large area is achieved by utilizing a side junction. More specifically, there is provided a process for formation of a thin film transistor liquid crystal display which can be used on all kinds of flat panel displays which uses glass as the substrate. The process for formation of a large area flat panel display utilizing a side junction according to the present invention includes the steps of: applying a side junction process on thin film transistor unit panels 2 so as to obtain a large area; and coupling a common electrode panel with said large area thin film transistor panel formed through said side junction process.

Process for formation of large area flat panel display using side

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Daejeon, South Korea

Sang-Ho Kim