• Title/Summary/Keyword: Semi-conductor

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Development of Contents Syndication Systems for Engineering Information Management in Semi-conductor Industries (반도체 산업의 공학 정보 관리를 위한 컨텐츠 신디케이션 시스템의 개발)

  • Kim, Tae-Yoon;Koo, Sang-Hoe
    • Journal of Information Technology Applications and Management
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    • v.13 no.4
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    • pp.109-120
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    • 2006
  • Enterprise Content Integration (ECI)is an IT strategy that improves enterprise' competitive advantages by integrating enterprise wide information and content into a unified view, which in turn supports efficient and effective decision making. Content Syndication Systems (CSS) is a solution that implements the ECI strategy. In semi-conductor industries, it is usual that enterprise content is scattered over tens of legacy systems. Therefore, engineers in semi-conductor companies spend a few hours to locate required engineering information on a daily basis as part of their jobs. In this paper, we develop an enterprise CSS system that integrates enterprise wide contents into a unified view that is suitable for semi-conductor industries. For this research, we first define enterprise CSS, then identify their systems requirements. Then we propose an architecture supporting the identified requirements, and present the implemented prototype. One of the most important requirements is the individualized subscription rule setting for engineering information. For this purpose, we developed methods to represent the information properties and subscription rules.

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A Temperature dependancy and dielectric/insulation properties for power cables (전력케이블용 반도전층의 유전/절연특성과 온도 의존성)

  • Lee, Jong-Chan;Her, In-Sung;Kim, Kwang-Soo;Park, Dae-Hui;Lee, Jae-Kwan;Kim, Dong-Chan
    • Proceedings of the KIEE Conference
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    • pp.1463-1466
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    • 2002
  • In this paper, the thermal analysis and dielectric/insulation properties were investigated with considering the temperature depenence Using the sheet of semi-conductor/XLPE came from 22 kV power cables, the dielectric/insulation properties and temperature dependence were measured under 1kHz. According to the results we can verify that only semi-conductor sheet changed linearly, and with the unstable results. the dielectric/insulation properties of the semi-conductor/XLPE sheet show the highest value in the range of 40 $^{\circ}C$ and 50 $^{\circ}C$ and are rely on XLPE rather than semi-conductor in terms of the temperature.

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A Feasibility Study on the Research Infrastructure Project of System Semi-Conductor Industry (시스템 반도체산업 기반조성사업의 타당성 분석 연구)

  • Kim, Dae Ho
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.9 no.2
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    • pp.87-95
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    • 2014
  • The High-price development & testing tools and IP infratstructures are required for the development of system semi-conductors, but SMEs have not ability to prepare for them. Recently in terms of the miniaturization and the advancement of semiconductor process, the cost of the semi-conductor development have shown the rising tendency and the market-based design tools used are requied to be upgraded due to the advancement in the environment and technology. On the contray, many other contries such as Taiwan, Japan, China, and User are supporting this system semi-conductor industry. Korean government is trying to build the research infrastructure for system semi-conductor industry that aims to reduce the costs of the design infrastructure investment, to support the companies of system semi-conductor development and to incubate the fab-less start-ups. This study analyzes the feasibility of the project, by using the AHP analysis and the results shows that this project is considered feasible because the AHP overall score is evaluated as 0.840, the overall score is greater than or equal to 0.55.

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The Characteriastics of Viscosity Behavior of EMC for Semi-conductor Encapsulant - Containing One Kind of Spherical Silica (반도체 봉지재용 EMC의 점도거동 특성 - 한 종류의 구형 실리카 포함)

  • Kim, In Beom;Lee, Myung Cheon;Lee, Euy Soo
    • Applied Chemistry for Engineering
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    • v.10 no.8
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    • pp.1175-1179
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    • 1999
  • The rheological properties of highly filled epoxy molding compound(EMC) for semi-conductor encapsulants are greatly affected by the content of filler loaded. In this study, the change of viscosity of EMC for semi-conductor encapsulants with the filler content was investigated. Also, both of Cox-Merz and modified Cox-Merz equations were applied to convert the viscosity change as a function of frequency to that of shear rate. It was ovserved that shear thinning and yield stress occured at high filler contents and that the Cox-Merz equation could not be applied at high filler contents because of the difference of viscosity according to the various strains. When the modified Cox-Merz equation was applied, the all the curves having different strain tend to be represented by one master curve, even though some deviation was obseved at high filler content and strain.

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Trends and Implications of International Standardization for Rare Earths (희토류 관련 국제표준 동향 및 시사점)

  • Abbas, Sardar Farhat;lee, Sang-Hyun;Lee, Bin;Kim, Bum-Sung;Kim, Taek-Soo
    • Journal of Korean Powder Metallurgy Institute
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    • v.25 no.2
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    • pp.165-169
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    • 2018
  • Rare earth elements (REEs) are considered to be vital to modern industry due to their important roles in applications such as permanent magnets, automobile production, displays, and many more. The imbalance between demand and supply of REEs can be solved by recycling processes. Regarding the needs of industry and society, the International Organization for Standardization, Technical Committee 298 (ISO/TC298) Rare Earths has been recently launched for developing international standards on rare earth elements. In accordance with the suggestion of its constituents, it is tentatively working to develop the appropriate standards under five working groups (WG) on terms and definitions (WG1), element recycling (WG2), environmental stewardship (WG3), packaging, labelling, marking, transport, and storage (WG4), and testing analysis (WG5). The scope and structure of ISO/TC298 on the topic of rare earths is discussed in this document.

Demonstration of RSOA based Bidirectional WDM-POM by using Suppressed Optical Carrier Modulation (RSOA기반 반송파 억제된 광변조를 이용한 양방향 WDM-PON 구현)

  • Kim, Dong-Hyeon;Lee, Dae-Won;Won, Young-Wuk;Park, Soo-Jin;Han, Sang-Kook
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.32 no.12B
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    • pp.809-814
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    • 2007
  • In this paper, we proposed new method of a bidirectional WDM-PON transmission using suppressed optical carreir(SOC) and reflective semi-conductor optical amplifier(RSOA) based on WDM-PON. while LiNbO3 mach zehnder modulator(LN-MZM) generates 5GHz modulated SOC for uplink at central office(CO), RSOA at CO modulates the downstream data. At optical network units(ONUs), Another RSOA modulates the SOC light source for uplink at ONU and uplink data are up-converted to the 5 GHz already modulated SOC using LN-MZM.

A Study on the Semi-conductor Package Process Epoxy Moulding Compound Gun (반도체 Package 공정용 EMC Gun에 관한 연구)

  • Cho, Myung-Hyun;Kim, Gyu-Sung
    • 전자공학회논문지 IE
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    • v.43 no.4
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    • pp.83-92
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    • 2006
  • EMC(epoxy moulding compound) when operate with residual quantity processing after fixed quantity moulding inverse close way of designing by mechanical action inhalation so that may occur, solved of needle tip residual quantity and cause of thread extend phenomenon. In this paper, design to connect directly gun, washer tank and measuring beforehand amount that washing is easy and want minuteness fixed quantity that essential equipment in semi-conductor packaging process because develop EMC so that can molding with high speed consider.

Pervaporation Purification Technology Used in Cleansing Liquids in Conjunction with Semi-conductor (전자 반도체 프로세서용 약품의 투과증발 정제기술)

  • 홍영기;배기서
    • Textile Science and Engineering
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    • v.36 no.1
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    • pp.90-97
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    • 1999
  • In this work, we prepared asymmetric composite membranes based on carboxymethyl cellulose (CMC) with degree of substitution (DS) of 1.06 in order to develop a new dehydration membrane having high selectivity and permeability. New composity membranes were produced by casting CMC polymer solution on high density nonwoven fabrics. We have investigated practical pervaporation performances of aqueous alcohol solutions; especially iso-propyl alcohol(IPA) which is usually used during the semi-conductor rinsing process. For the application of the membranes on a technical scale, we have made a plate and frame type pervaporation module unit. The separation factor and the flux for the composite membrane DS were 85~811 and 0.07~0.52 kg/$m^2$.h in 90~98 wt% aqueous IPA solutions at 6$0^{\circ}C$, respectively. The IPA concentration on the membrane performance using pervaporation module system could be increased from 95.04 wt% to more than 98.50 wt% in about 9h at operation temperature of 7$0^{\circ}C$ using the pervaporation module system.