Korea Institute of Science and Technology

Korea Advanced Institute of Science and Technology

Samsung Display Co., Ltd.

Korea Research Institute of Standards and Science

Samsung Displayco., Ltd.

Heesuk Kim

Jeong Gon Son

Sang-Soo Lee

Seungjun Chung

Phillip Lee

Jong Hyuk Park

Tae Ann Kim

Min Cheol Park

Young Jin Kim

Jai Kyeong Kim

Jaikyeong Kim

JeongGon Son

Youngpyo Ko

Jun Chan Choi

Jae Hong Kim

Youngmin Kim

Haeil Park

Minsung Kim

Minki Nam

Kyoungwon Park

Baekhee Lee

Byeongmoon Lee

Wan Ki Bae

Wanki Bae

Soon Ho Lim

Byeongguk Jeong

Hoon Yeub Jeong

Dohchang Lee

Hyunjoo Cho

SukJoon Hwang

Jong Ho Kim

Seung Hyun Lee

Min Su Park

Min-Seok Kim

Hyunjung Lee

Seunghyun Lee

Kyunghee Kim

Jun Kyung Kim

Young Mo Lee

Ji-Won You

Yon Kyu Park

Suk Joon Hwang

Hyo Won Kwon

Byung Soo Kang

Seongkwon Hwang

Jinwoo Oh

Seong Kwon Hwang

Jae Hong Sun

Inho Jeong

Doo Joon Jang

Keun-Young Shin

Kiwon Oh

The present invention relates to a conductive material with high stretchability and a method for preparing the conductive material, and more particularly, to a conductive material with high stretchability, including a carbon nanotube (CNT) network, and a polymer dopant, not an elastomer, providing an increase in free-volume of the carbon nanotube (CNT) network, wherein the conductive material includes the polymer dopant in an amount of 1 wt % to less than 30 wt % with respect to the total weight of the carbon nanotubes (CNTs) and has stretchability.

Conductive material with high stretchability and preparation method thereof

Disclosed herein is a method of manufacturing an auxetic stretchable substrate with a flexible joint structure according to various embodiments of the present invention. The method includes preparing a substrate made of an elastic material, and forming an auxetic to form a plurality of first regions on the substrate, each of the plurality of first regions is a region in which a material constituting the auxetic is not printed, and at least some of the plurality of first regions have different lengths.

Auxetic stretchable substrate with flexible joint structure and method of manufacturing same

Provided is a method of manufacturing a stretchable substrate having improved stretching deformation uniformity through control of a spatial crosslinking degree according to various embodiments of the present disclosure to implement the above object. The method includes forming a substrate part of an elastic material, forming an auxetic including a plurality of unit structures on the substrate part, and forming a fixing part on the substrate part on which the auxetic is formed, wherein the fixing part has a different crosslinking density in each region.

Stretchable substrate having improved stretching deformation uniformity through control of spatial crosslinking degree and method of manufacturing the same

Provided is a method of manufacturing a stretchable substrate according to various embodiments of the present disclosure in order to implement the above-described objects. The method may include forming an auxetic including a plurality of unit structures and forming one or more microstructures.

Stretchable substrate and method of manufacturing the same

Provided is a method of manufacturing a stretchable substrate having improved thickness deformation uniformity through control of a spatial crosslinking degree according to various embodiments of the present disclosure to implement the above object. The method includes forming a substrate part of an elastic material, forming an auxetic including a plurality of unit structures on the substrate part, and forming a fixing part on the substrate part on which the auxetic is formed, wherein the fixing part has a different vertical crosslinking density at each position.

Stretchable substrate having improved thickness deformation uniformity through control of spatial crosslinking degree and method of manufacturing the same

The present disclosure relates to a stretchable electrode, a method for preparing the same and a stretchable battery including the stretchable electrode. The stretchable electrode of the present disclosure, which is prepared by crosslinking a hydroxyl-functionalized fluorine-based polymer binder physically using a ketone-based solvent or chemically with a crosslinking agent, has superior stretchability, has improved interfacial adhesivity to an active material through Fenton's oxidation, exhibits improved stability under various mechanical deformations of the electrode such as stretching, etc. and can uniformly maintain the electrical conductivity, battery capacity and charge-discharge performance of the electrode. In addition, the stretchable battery of the present disclosure, which includes the stretchable electrode, a stretchable current collector, a stretchable separator and a stretchable encapsulant, has improved stretchability and superior battery stability under various deformations due to high degree of freedom of structures and materials. In addition, the stretchable battery of the present disclosure can be prepared as a fiber battery by printing an electrode and a current collector sequentially on both sides of a stretchable fabric, which can be worn, e.g., around sleeves due to superior stretchability and high structural degree of freedom and retains high battery performance and mechanical stability even under mechanical deformation. Therefore, it can be applied to a mobile display for a health monitoring system or a smartwatch.

Stretchable electrode, manufacturing method thereof, and stretchable battery comprising stretchable electrode

Disclosed is a method of manufacturing a transparent stretchable substrate according to various embodiments of the present disclosure. The method may include generating a substrate part formed of an elastic material, generating an auxetic including a plurality of unit structures on the substrate part, and generating a fixing part on the substrate part on which the auxetic is generated.

Transparent stretchable substrate and manufacturing method thereof

Disclosed is a method of manufacturing a stretchable substrate having improved stretch uniformity according to various embodiments of the present disclosure in order to implement the above-described object. The method may include forming an auxetic including a plurality of unit structures, and attaching one or more elastic sheets to the auxetic and forming a stretchable substrate.

Stretchable substrate having improved stretch uniformity and method of manufacturing the same

A conductive polymer composite for adhesion to a flexible substrate contains a polymer adhesive containing a curable polymer and a curing agent; and a conductive filler containing a metal and a carbonaceous material dispersed in the polymer adhesive. The conductive polymer composite is suitable for application to not only the human body but also other objects having irregular surface. In addition, due to enhanced adhesive strength of the conductive polymer composite to the flexible substrate, the reduction in conductivity or conductivity breakdown caused by external stress can be prevented and flexibility and stretchability can be improved.

Conductive polymer composite for adhesion to flexible substrate and method for preparing same

A method of manufacturing a paste according to various embodiments of the present disclosure for resolving the above-described problems is disclosed. The method of manufacturing a paste may include an operation of adding a metal conductor and a multi-walled carbon nanotube (MWCNT) to chloroform (CHCl) to produce a first mixture, an operation of adding polydimethylsiloxane (PDMS) to the first mixture to produce a second mixture, an operation of evaporating the chloroform in the second mixture to acquire a third mixture, and an operation of adding an additional additive to the third mixture to produce a paste.

Paste manufacturing method and flexible electrode manufacturing method using the same

Disclosed is a method of manufacturing a stretchable substrate according to various embodiments of the present disclosure for realizing the above-described objectives. The method may include generating an auxetic including a plurality of unit structures and adhering one or more elastic sheets to one surface of the auxetic.

Mechanical-metamaterial-based stretchable substrate with negative poisson's ratio and manufacturing method thereof

A display device includes: a display substrate; a light amount control layer on the display substrate; a first polarizer on the light amount control layer; and a color conversion layer on the first polarizer. The color conversion layer includes a phosphor, the phosphor includes a quantum dot, the quantum dot including: a core; a first shell surrounding the core; and a second shell surrounding the first shell, and the quantum dot has a diameter ranging from about 2 nm to about 32 nm.

Display device and manufacturing method thereof

A highly-dielectric, elastic structure includes an elastic body that is highly-dielectric and includes a polymer matrix that including 1000 pbw of a polydimethylsiloxane (PDMS) base and 100 pbw of a PDMS curing agent, and has a tensile strength of 0.1 to 10 MPa; and 22.4 pbw of carbon black that is surface-treated with octadecyltrimethoxysilane (ODTMS) in an amount of at least 0.707 mmol per 22.4 pbw of the carbon black, and that is dispersed in the polymer matrix and cured; and an adhesive electrode that is stretchable, that is disposed on the elastic body, and that includes a polymer adhesive including a 500 pbw of a thermosetting silicone-based polymer adhesive including a curable polymer and a curing agent; and a conductive filler comprising 500 pbw of silver particles and 4000 pbw of a carbonaceous material that is a multi-walled carbon nanotube that are dispersed in the polymer adhesive and cured.

Highly-dielectric, elastic structure and a touch sensor including the same

Disclosed is a thermoelectric device in which a separate interlayer is inserted between a thermoelectric leg and an electrode to reduce the contact resistance between the thermoelectric leg and the electrode, so that the interlayer serves as a tunneling path between the thermoelectric leg and the electrode, facilitating the charge movements between the two materials. The thermoelectric device according to an embodiment includes a substrate; at least one thermoelectric leg positioned on the substrate; an interlayer positioned on each thermoelectric leg of the at least one thermoelectric leg and including a plurality of interlayer materials that are chemically bonded with a respective thermoelectric leg; and an electrode positioned on each interlayer and electrically connected to the respective thermoelectric leg, wherein the plurality of interlayer materials of each respective interlayer is arranged in a shape of a brush.

Thermoelectric device having a separate interlayer disposed between a thermoelectric leg and an electrode to reduce the contact resistance therebetween

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Seoul, South Korea

Heesuk Kim