• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.873-878
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• 2008

Doosan Mecatec has developed alignment system for Organic Light-Emitting Diode (OLED) display production using large size substrate. In the present article, The alignment system between the substrate and the mask, which is a core technology for producing the OLED product using the fourth-generation substrate with $730{\times}920mm^2$ or more, will be described by dividing into a substrate loader, a magnet unit, a CCD camera, etc. The substrate loader is optimized through the simulation where the central portion of the substrate droops by about 1.5mm by clamping each of a long side (920mm direction) and a short side (730mm direction) thereof by 6 point and 4 point. A magnet unit using a sheet type of rubber magnet is constituted and a CCD camera model with the specifications capable of minimizing the errors between a clear image and the same image is selected. The system to which an upward evaporation technique of small molecular organic materials will be applied has been developed so that repeatability and position accuracy becomes ${\pm}1{\mu}m$ or less using an UVW type of stage. Also, the vision accuracy of the CCD camera becomes ${\pm}1{\mu}m$ or less and the align process TACT becomes 30sec. or less so that the final alignment accuracy between the substrate and the mask becomes ${\pm}3{\mu}m$ or less. In order to meet an extra-large glass substrate, an evaporation system using an extra-large AMOLED substrate has been developing through a vertical type of an alignment system.

• 산업경영시스템학회지
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• 제40권1호
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• pp.114-123
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• 2017

The global small and mid-sized display market is changing from thin film transistor-liquid crystal display to organic light emitting diode (OLED). Reflecting these market conditions, the domestic and overseas display panel industry is making great effort to innovate OLED technology and incease productivity. However, current OLED production technology has not been able to satisfy the quality requirement levels by customers, as the market demand for OLED is becoming more and more diversified. In addition, as OLED panel production technology levels to satisfy customers' requirement become higher, product quality problems are persistently generated in OLED deposition process. These problems not only decrease the production yield but also cause a second problem of deteriorating productivity. Based on these observations, in this study, we suggest TRIZ-based improvement of defects caused by glass pixel position deformation, which is one of quality deterioration problems in small and medium OLED deposition process. Specifically, we derive various factors affecting the glass pixel position shift by using cause and effect diagram and identify radical reasons by using XY-matrix. As a result, it is confirmed that glass heat distortion due to the high temperature of the OLED deposition process is the most influential factor in the glass pixel position shift. In order to solve the identified factors, we analyzed the cause and mechanism of glass thermal deformation. We suggest an efficient method to minimize glass thermal deformation by applying the improvement plan of facilities using contradiction matrix in TRIZ. We show that the suggested method can decrease the glass temperature change by about 23% through an experiment.

• 문화기술의 융합
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• 제6권3호
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• pp.377-380
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• 2020

일인가구의 증가 및 소비행태의 변화, 그리고 마트는 대형화 되고 있는데 반하여 포장 형태는 소포장 용기로 바뀌고 있으며, 수출되는 농산물 특히 과일 및 관련 작물의 수출시 소규모 패키지화되고 있고, 수출시점에 CO₂등의 선도처리를 하고는 있으나 운송 기간내 패키지내부 작물의 선도를 보장하기 어려웠다. 따라서 농산물 유통시 운송과정이나 진열시에 품온이 바뀌어 미생물에 의하여 작물이 변질되는 것을 방지하기 위한 신선도유지제로 소포장 용기로 유통하는 농산물에 적용하기 위한 새로운 신선도 유지 방법의 제공이 필요한 상황으로 윤통과정의 혁신을 가져올 수 있는 방안에 대하여 연구하게 되었다.

• 한국항해항만학회지
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• 제28권8호
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• pp.673-678
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• 2004

전자해도의 표준 형식인 S-57은 수로 데이타의 교환을 위한 표준이다. 이에 따라 제작된 항해용 디지털 해도를 전자해도(ENC: Electronic Navigational Chart)라 하며, 전자해도를 공간 정보의 표현에 적절한 컴퓨터 자료 구조로 변환 한 것을 SENC(System ENC)라 부른 다. SENC는 시스템 제조업체마다 고유한 알고리듬으로 제작되는데, ECDIS(Electronic Chart Display and Information System) 성능에 주요한 역할을 하는 요소임에도 불구하고 아직까지 SENC의 구조의 설계 및 구현에 관한 연구는 발표된 바가 없는 실정이다. 본 연구에서는 새로이 고안한 Mesh 구조를 이용한 SENC 구조를 설계하였고, 이를 Display 할 수 있는 시스템을 구현하여 PDA 및 데스크탑 컴퓨터에서 동작 결과를 확인하였다.

• 반도체디스플레이기술학회지
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• 제22권3호
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• pp.41-45
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• 2023

Currently, the method of loading items in the warehouse, the worker directly decides the loading location, and the most used method is to load the product at the location closest to the entrance. This can be effective when there is no difference in the required amount for goods, but when there is a difference in the required amount for goods, it is inefficient because items with a small required amount are loaded near the entrance and occupy the corresponding space for a long time. Therefore, in order to minimize the release time of goods, it is essential to select an appropriate location when loading goods. In this study, a method for determining the loading location by predicting the required amount of goods was studied to select the optimal loading location. Deep learning based bidirectional long-term memory networks (Bi-LSTM) was used to predict the required amount for goods. This study compares and analyzes the release time of goods in the conventional method of loading close to the entrance and in the loading method using the required amount for goods using the Bi-LSTM model.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2008년도 학술대회 2부
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• pp.140-145
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• 2008

모바일 디바이스는 한정된 디스플레이 공간과 인터렉션의 제한적인 요소를 가지고 있다. 모바일 디바이스의 중요한 이슈 중 하나는 이러한 상황에서 어떻게 제조사의 Identity를 표현할 수 있느냐 하는 것이다. 그것은 사용자에게 일관성이라는 측면에서 매력적이기 때문이다. 그러므로 우리는 GUI, IA, AUI 요소에 해당하는 사용자 경험요소들로부터 추출하고 통합하는 작업들을 진행하였다. 이 연구는 각 부서의 실무담당자들이 모여 전사 TF로 진행되었다. 이 연구에서는 대상제품의 다양한 특성을 반영하면서 일관성을 유지하기 위해 여러 방법들과 프로세스들을 거치면서 시도되었다. 이러한 적용 가능한 결과들은 진행되는 본문에서와 같은 논의과정을 거쳐 얻어진 젓이다.

• 한국유통학회지:유통연구
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• 제2권1호
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• pp.35-57
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• 1997

In retailing, it seems very important to examine how consumers perceive in store design factors such as instore space for walking, product arrangement styles, instore display types, window sizes, and possibly others. Furthermore, consumers perceptions of various designs would be differentiated by consumers shopping patterns such as actual shopping versus window shopping. This article empirically investigates how various desings create different consumer reactions measured by consumer mood and store image depending on the types of consumer shopping. It was found that design factors such as open, focused, and big would create better consumer mood and consumer perceptions of store image than closed, unfocused, and small. Another finding was that consumer perceptions would interact with consumer shopping patterns. Based on the research findings, some implications are discussed in the article.

• Design & Manufacturing
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• 제12권1호
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• pp.47-51
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• 2018

As the IT industry rapidly progresses, the functions of electronic devices and display devices are integrated with high density, and the model is changed in a short period of time. To implement the integration technology, a uniform micro-pattern implementation technique to drive and control the product is required. The most important technology for the micro pattern generation is the exposure processing technology. Failure to implement the basic pattern in this process cannot satisfy the demands in the manufacturing field. In addition, the conventional exposure method of the mask method cannot cope with the small-scale production of various types of products, and it is not possible to implement a micro-pattern, so an alternative technology must be secured. In this study, the technology to implement the required micro-pattern in semiconductor processing is presented through the photolithography process and plasma etching.

• Bulletin of the Korean Chemical Society
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• 제30권1호
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• pp.53-56
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• 2009

At room-temperature, a facile, seedless, and environmentally benign green route for the synthesis of star like PbS nanoclusters at 7 min in aqueous solution of 1-ethyl-3-methylimidazolium ethyl sulfate, [EMIM] [$EtSO_{4}$], room-temperature ionic liquid (RTIL), via ultrasonic irradiation is proposed. The X-ray diffraction studies display that the products are excellently crystallized in the form of cubic structure. An energy dispersive X-ray spectroscopy (EDX) investigation reveals the products are extremely pure. The absorption spectra of the product exhibit band gap energy of about 4.27 eV which shows an enormous blue shift of 3.86 eV that can be attributed to very small size of PbS nanoparticles produced and quantum confinement effect. A possible formation mechanism of the PbS nanoparticles using ultrasonic irradiation in aqueous solution of the RTIL is presented.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 학술대회 논문집 전문대학교육위원
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• pp.153-157
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• 2002

Electricity living body formation operation appliance is using most imports until present. And, because electricity living body formation operation appliance is too expensive, it becomes burden to buy in small scale hospital. Also, problem that economical damage by income is added follows, Therefore, this treatise developed electricity living body formation operation appliance by home production, Ultra high frequency eruption circuit used LC circuit, and output frequency is possible to 8 [MHz], and output voltage amplified maximum 800 [V]. This operation appliance could display size of fixed current. This developed product could microscopic operation fewer than 1 [mm]. This development technology is considered by do metallic surface heat treatment, melting, welding, induction heating device and that can apply to domestic animals surgical operation and so on.