Samsung Electronics Co., Ltd.

The Goodsystem Corporation

Dowa Metaltech Co., Ltd.

Thegoodsystem Corp.

The Goodsystem Co., Ltd.

Young-suk Kim

Meoung-whan Cho

Il-ho Kim

Seog-woo Lee

Jong-Woo Kim

Hyon-Myong Song

Young-Jin Yi

Jae-Hong Park

Jun-Ho Koh

Chang-seok Kang

Hiroto Narieda

Kwang-hyuk Kim

Sung-Wook Ahn

Tomotsugu Aoyama

Jung-shin Park

Hue-yin Kim

Jin-yong Ahn

Jong-suk Lee

Sang-woong Lee

Gyung-pyo Hong

Hae-sik Jun

Ju-hyung Kim

Hae-su Gwon

Seung-Ha Lee

Kyung-eun Lee

Jong-myeong Ban

Jung-Hee Go

Byung-Hun Cho

Mahn-Joong Lee

A composite material and a heat dissipation part composed of the composite material are provided. More particularly, a composite material comprising a metal matrix and a structure in which thermally conductive particles are dispersed inside the metal matrix is provided, wherein: the metal matrix is composed of Cu, Ag, Al, Mg, or an alloy thereof; the thermally conductive particles include diamond or SiC; the thermally conductive particles are included at a volume ratio of 15% to 80%; in a microstructure of the composite material, the distance between the center of any one thermally conductive particle and the center of a thermally conductive particle most adjacent to the any one thermally conductive particle is 200 μm or greater; and the any one thermally conductive particle and the thermally conductive particle most adjacent thereto are not in contact with each other but have a metal matrix therebetween.

Composite material and heat dissipation part

The present invention relates to a composite material of a metal and a non-metal and a heat dissipation part composed of the composite material. More specifically, the present invention relates to a composite material including a structure in which diamond particles which have excellent thermal conductivity are dispersed in a metal matrix, and particularly, to a highly reliable composite material capable of maintaining excellent heat dissipation properties even in a use environment such as military, aviation, space, or the like to which severe thermal cycles are applied, and to a heat dissipation part including the composite material.

Composite material and heat dissipation part comprising the composite material

A heat sink plate includes a first layer made of copper (Cu) or a copper (Cu) alloy, a second layer formed on the first layer and made of molybdenum (Mo) or an alloy that includes copper (Cu) and one or more components selected from molybdenum (Mo), tungsten (W), carbon (C), chromium (Cr), titanium (Ti), and beryllium (Be), a third layer formed on the second layer and made of copper (Cu) or a copper (Cu) alloy, a fourth layer formed on the third layer and made of molybdenum (Mo) or an alloy that includes copper (Cu) and one or more components selected from molybdenum (Mo), tungsten (W), carbon (C), chromium (Cr), titanium (Ti), and beryllium (Be), and a fifth layer formed on the fourth layer and made of copper (Cu) or a copper (Cu) alloy.

Heat sink plate

A heat sink plate having a structure in which two or more kinds of materials are laminated, includes: a core layer in the thickness direction of the heat sink plate; and cover layers covering a top surface and a bottom surface of the core layer; wherein the cover layers comprise a material containing copper, wherein the core layer is formed of a matrix having a first thermal expansion coefficient and a plurality of layers extending in parallel along the thickness direction of the core layer in a lattice form in the matrix, wherein the plurality of layers are made of an alloy having a second thermal expansion coefficient.

A method, user device, server, and storage medium for creating and joining a social group performed by a user device are provided. The method for creating the social group includes receiving information corresponding to a current location of the user device; receiving at least one social group condition information item; and sending a request to create a social group based on the information corresponding to the current location and the at least one social group condition information item to an external device.

Method of creating and joining social group, user device for executing the method, server, and storage medium

A nonvolatile memory device includes: a plurality of cell strings disposed on a substrate, wherein at least one of the plurality of cell strings comprises a plurality of cell transistors and at least one ground select transistor stacked in a direction substantially perpendicular to the substrate, and the substrate and a channel region of the plurality of cell strings have a same conductivity type; a substrate bias circuit configured to provide an erase voltage to the substrate in an erase operation; and a ground select line voltage generator configured to provide a ground select line saturation voltage to the at least one ground select transistor in the erase operation.

Nonvolatile memory device and an erase method thereof

A portable electronic apparatus functioning as a pen-table, includes a touch-screen module for detecting contact with an external object and creating position data of a detected region. The portable electronic apparatus, by functioning as a pen-table, eliminates the need to install or carry a mouse, a pen-table, etc. for controlling a personal computer, a laptop computer or the like. A local area communication module transmits and receives data based on a local area communication protocol, and a display module displays the detected region and information on a user interface (UI) and functions of the apparatus. A controller controls the operations of the modules in response to the user's input so as to transmit position data created by the touch-screen module to an electronic device that includes the functions of a pen-table and local area communication.

Portable electronic apparatus functioning as pen-table and computer system using the same

Disclosed is a method of providing additional content in a digital broadcast reception apparatus, the method including receiving a locator of additional content from a broadcast server while a user watches a broadcast program, receiving an instruction to insert the additional content from the broadcast server, receiving and reproducing the additional content from a content providing server designated by the locator, and switching back to the broadcast program. Thus, it is not necessary to allocate a separate channel and/or to switch channels for providing additional content.

Digital broadcast reception apparatus and method of providing additional content

Disclosed is a cover system for a portable communication device which is latched or separated according to pulling or pushing a cover unit so as to open/close a slot entrance of a portable communication device. The cover opening/closing apparatus includes a slot entrance formed on a body of the portable communication device; a cover unit for opening/closing the slot entrance, the cover unit being assembled with the slot entrance and latched to or separated from the slot entrance according to pulling or pushing the cover unit; a plurality of assembly units formed on the slot entrance; and a plurality of latching units formed on the cover unit, assembled to be inserted into and withdrawn from the assembly units, and latched to or separated from the assembly units according to pulling and pushing or lifting the cover unit.

Cover opening/closing apparatus for portable communication device

A method of operating a mobile device by recognizing a user's gesture and a mobile device that uses the method, the method includes recognizing the user's gesture and circumstance information; generating circumstantial gesture information according to a combination of the recognized gesture and the circumstance information; and executing an application item corresponding to the circumstantial gesture information.

Method of operating mobile device by recognizing user's gesture and mobile device using the method

An apparatus and method for automatic update are provided. The method includes storing authentication information for data, including first and second data, receiving the first data from the device, performing an authentication of the first data using the authentication information, and determining whether to receive the data, including the first data and the second data, according to the authentication.

Apparatus and method for automatic update

An embodiment is a circuit including 2first comparators to generate a first result by comparing data from at least two of 2memory cells to which test pattern data are written. 2first switching circuits provide the first result or a disable signal responsive to a first switching signal. And 2second comparators generate a second result by comparing signals output from some of the 2first switching circuits. N may be a natural number greater than or equal to three.

Growing community of inventors

Gyeonggi-do, South Korea

Young-suk Kim