• Electronics and Telecommunications Trends
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• v.25 no.5
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• pp.20-32
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• 2010

정보 디스플레이는 기술의 발전에 따라 새로운 양상으로 발전하고 있다. 그 중에서 투명디스플레이는 정보를 배경과 같이 보여줄 수 있는 독특한 장점 때문에 주목을 받아왔지만 기술적인 한계로 대중화되지 못했다. 최근에는 AMOLED의 개발에 따라 투명디스플레이가 투명 AMOLED의 형태로 대중화될 기능성이 높아지고 있다. 투명 AMOLED는 AMOLED의 개발에 따라 기술적인 발전이 이루어질 것으로 전망되지만 투명 AMOLED가 가지는 투과도 개선, 시인성 확보 등 여러 기술적인 과제들을 해결하기 위해서는 별도의 기술개발이 필요하다. 이러한 기술개발을 통해 투명디스플레이가 대중화되면 증강현실 등의 콘텐츠와 결합하여 사용자에게 새로운 인터페이스를 제공해 줄 것으로 기대된다.

• Electronics and Telecommunications Trends
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• v.28 no.5
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• pp.34-42
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• 2013

대면적 태양전지와 디스플레이용 투명전극으로 지금까지는 투명전도성산화물(TCO: Transparent Conductive Oxide)이 일반적으로 사용되어 왔지만, 성능이 향상된 새로운 소자가 등장함에 따라 현재보다 우수한 광학 특성을 가지면서 낮은 전기저항을 갖는 새로운 투명전극을 개발하기 위한 관심이 집중되고 있다. 다양한 종류의 차세대 투명전극 기술 중 현재 응용 가능성이 가장 높은 투명합성전극(TCE: Transparent Composite Electrode, TCO/금속/TCO 구조) 기술은 단일 층 TCO를 사용하는 것보다 우수한 전기 광학적 특성을 보여주고, 더구나 플라스틱 기판 위에 저온에서도 공정이 가능하기 때문에 새로운 투명전극 기술로 부상하게 되었다. 본고에서는 투명합성전극 기술에 대해 소재의 선택, 전기 광학적 특성, 기계적 열적 습도 안정성과 소자 응용 관련 주요 현황에 대해 살펴보고자 한다.

• Electronics and Telecommunications Trends
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• v.20 no.6 s.96
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• pp.15-23
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• 2005

최근 국내외에서 연구되고 있는 가입자에 초고속 멀티미디어 서비스가 가능하도록pico cell 가입자 통신망을 구성하여 100Mbps-수 Gbps의 대용량 초고속 데이터를 통신할 수 있는 밀리미터파 pico cell 광무선 통신 기술의 개념, 필요성, 기술 동향과ETRI를 중심으로 연구 개발되고 있는 핵심 부품들의 개발 현황과 기술의 활용성에 대하여 조사하였다.

• Electronics and Telecommunications Trends
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• v.22 no.5
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• pp.46-56
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• 2007

투명전자소자는 투명한 특성을 이용하여 기존의 전자기기가 가지고 있는 공간적/시각적 제약을 해소하려는 목적을 가진 소자이며 투명트랜지스터를 기반으로 한다. 투명 트랜지스터는 투명반도체(주로 산화물), 투명절연체, 투명전도체로 구성되어 있다. 투명 트랜지스터와 투명 OLED를 결합한 투명디스플레이에 정보 인식/정보 처리 기능이 추가로 구현되어 있는 공간 임베디드 정보 단말기를 스마트 창이라고 부른다. 투명전자소자는 초기에는 투명하지 않은 형태의 산화물 트랜지스터를 이용한 디스플레이 분야에 주로 이용될 가능성이 높고 2010년 이후에 투명 IC, 스마트 창 형태의 신규 시장이 창출될 것으로 예측된다. 또한, 투명전자소자 분야는 세계적으로 개발 초기단계이기 때문에 원천 특허 확보 등에 주력할 필요가 있다.

• Electronics and Telecommunications Trends
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• v.22 no.5
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• pp.1-11
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• 2007

Printed RFID는 반도체 성질을 띤 유기물의 발견 및 유기물의 메모리소자로의 활용 등에 대한 연구가 이루어지면서 관심을 가지게 되었다. 유기물이 무기물에 비해 소재의 안정성 등 여러 가지 한계를 갖고 있음에도 전자소자로의 활용을 모색하고 있는 것은 저가격, 대량생산이 가능하다는 데 있다. 유기물을 이용하여 우선적으로 산업화가 진행될 것으로 판단되는 분야가 프린팅방법을 이용한 RFID에의 응용이다. Printed RFID는 저렴한 폴리머 소재를 이용하여 저가격, 대량 생산이 가능하고 생산시 그 수요도 다양할 것으로 보고 있다. 본 기고문에서는 printed RFID의 기술발전 동향, 제조방법, 시장전망, 한계기술 및 극복방안에 대하여 기술하고자 한다.

• Electronics and Telecommunications Trends
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• v.3 no.4
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• pp.3-12
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• 1988

Epilayer growing process has been recognized as a key technology for successful GaAs based devices and integrations. These may include HEMT, multiple quantum well structures, band gap engineering, and quantum confinement heterostructures. The fabrication of epilayers in these devices must meet very stringent requirements in terms of crystallinity, composition, film thickness and interface quality. In particular, the quality of interfaces is getting more important because the film thickness, and flatness, roughness and stability at interface of ultrathin films cause critical effects on the device performance. This article reviews the current status of modern epitaxial techniques which have been developed in the last few years. First, the new techniques PLE, GI, MEE, TSL based on MBE technique will be reviewed and their technical importance will be stressed. Secondly, MOMBE, GSMBE, CBE which combine the advantages of MBE and MOCVD will also be discussed. Thirdly, the new sophisticated epitaxial technique, ALE, of which mechanism is totally different from others, will also be reviewed. Finally, areas which should be exploited more extensively to accomplish these techniques will be addressed.

• Bulletin of the Korea Photovoltaic Society
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• v.3 no.2
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• pp.6-15
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• 2017

실리콘 태양전지는 현재 태양광 시장의 90% 이상을 차지하고 있으며 향후에도 기술 개발을 통해 태양광 시장을 주도하는 기술로 예상되고 있다. 실리콘 태양전지의 가격 경쟁력 확보를 위해 새로운 기술이 개발되고 있는 상황에서 효율 한계를 극복하기 위한 탠덤 태양전지 연구가 주목 받고 있다. 실리콘 기반 탠덤 태양전지의 여러 후보 물질 중 페로브스카이트는 공정의 용이성뿐 아니라 물질의 특성이 탠덤 태양전지 소재로써 적합하여 최근 주요하게 연구되고 있다. 본 논문 에서는 페로브스카이트 실리콘 탠덤 태양전지의 연구 동향에 대해 살펴보고자 한다.

• Journal of the Korean Institute of Landscape Architecture
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• v.48 no.4
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• pp.41-54
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• 2020

This study was conducted to provide basic data for a transparent and fair bidding system by identifying problems and suggesting improvement measures through an analysis of the bidding status for construction projects and service-related landscaping of multi-family housing. To this end, we used the data from the "Multi-Family Housing Management Information System (K-apt)" that provides the history of apartment maintenance, bidding information, and the electronic bidding system to examine the winning bid status and amount, along with the size and trends of the winning bids by year, and the results of the selection of operators by construction type. As a result, it was found that out of the total number of successful bids (36,831), 4.4% (16,631) were in the landscaping business, and the average winning bid value was found to be about 24 million won. According to the data, 73% of the landscaping cases were valued between 3 million won and 30 million won, and 58.6% of the cases were in the field of "pest prevention and maintenance". 36% of the total number of bids were awarded from February to April, with "general competitive bidding" accounting for 59.8% of the bidding methods. As for the method of selecting the winning bidder, 55% adopted the "lowest bid" and "electronic bidding method," and 45% adopted the "qualification screening system" and "direct bidding method." As an improvement to the problems derived from the bidding status data, the following are recommended: First, the exception clause to the current 'electronic bidding method' application regulations must be minimized to activate the electronic bidding method so that a fair bidding system can be operated. Second, landscaping management standards for green area environmental quality of multi-family housing must be prepared. Third, the provisions for preparing design books, such as detailed statements and drawings before the bidding announcement, and calculating the basic amount shall be prepared so that fair bidding can be made by specifying the details of the project concretely and objectively must be made. Fourth, for various bidding conditions in the 'business operator selection guidelines', detailed guidelines for each condition, not the selection, need to be prepared to maintain fairness and consistency. These measures are believed to beuseful in the fair selection of landscaping operators for multi-family housing projects and to prepare objective and reasonable standards for the maintenance of landscaping facilities and a green environment.

• Journal of the Korean Institute of Landscape Architecture
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• v.28 no.2
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• pp.49-60
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• 2000

The purpose of this study is to overview domestic and foreign trends in the study of the landscape evaluation through new framework of landscape evaluation studies. 108 studies on the landscape evaluation are summarized and categorized into theoretical studies, verification of theories, development of evaluation methods and applications in physical planning. Major theories in the landscape evaluation came from the psycho-physics, the evolutionary theory ann the cultural-learning theory, and were verified and applied into physical planning. Early experimental researches on landscape evaluation, based on psycho-physics, were focused on relatively simple responses to landscapes. But many studies have been gradually related to the evolutionary theory and the cultural learning theory, emphasizing biological and cultural effects on landscape evaluation. Especially, Appleton's Prospect-Refuge theory' and Kaplans' 'Information Processing model' have very strong influence in landscape evaluation. Relatively there have been many application researches in Korea, which tells there have been strong needs to solve pending practical problems caused by the rapid economic and social growth for several decades. Almost of applications in physical planning are focused on physical features of landscapes, but for more comprehensive landscape evaluation, many other factors such as cognitive and sociocultural variables should be integrated into the whole evaluation system. As a result of reviewing of landscape evaluation studies, I found the overall domestic and foreign trends and the necessity of more research on the applications in physical planning. Because this study mainly focused on academic researches, for more appropriate landscape evaluation and management there should be more practical researches including various approaches.

• Land and Housing Review
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• v.11 no.2
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• pp.47-57
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• 2020

In this study, we aimed to identify the latest trends of landscape in apartment complexes by identifying how landscaping spaces are being created and what their characteristics are. Furthermore, we aimed to find out what type of garden is being constructed in the landscaping space and what the difference between the landscaping space and the garden space is, and to define the future direction of landscape for apartment complexes. The following results were our findings. First, we identified that landscaping space is divided into general landscaping space and garden space. The garden space has designated area within the whole apartment complex as a garden and there is a variety of garden themes and plants, facilities, packaging patterns, and sculptures are used accordingly. On the other hands general landscaping space features uniform patterns of packaging and simple planting patterns. Our finding is that the current trend is to set up separate garden space within the landscaping space of apartment complexes. Although gardens are often regarded as personal property and spaces that need to be cultivated or managed, and spaces that are limited to fences are defined as gardens, the current landscaping space of apartments is creating gardens-like spaces within public spaces.