• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.940-941
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• 2015

LCD (liquid crystal display) industry is needed to goods of high reliability and is interested in products without harmful material. In this experiment, we made the LED backlight unit for Automotive-navigation. And for making this backlight unit we used to eight side emitting type white LEDs with 1W high power of the lumileds company. We could know that this backlight unit releases to 6500 nit in 14W power consumption and start up voltage time is under the15ms in the ambient temperature $-20^{\circ}C$.

• The Optical Journal
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• s.108
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• pp.24-26
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• 2007

OLED는 1987년 현대적인 구조가 발표된 이후 10년 이내에 PMOLED가 상용화 되었으며, 20년이 지난 올해에 AMOLED의 본격적인 상용화가 기대되어, LCD나 PDP에 비해 훨씬 짧은 기간에 상용화된 유일한 디스플레이 기술로 인식되고 있다. 이러한 OLED는 향후에도 시장 및 기술이 가장 빨리 성장하는 디스플레이로 자리를 잡을 것으로 기대되고 있다. 2007년에 개수를 기준으로 약 1억 개, 금액을 기준으로 약 8억불의 시장규모를 형성하며, 2010년에는 개수를 기준으로 3억 6천만 개, 금액을 기준으로 40억불의 시장규모를 형성할 것으로 기대된다.

• The Optical Journal
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• s.109
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• pp.42-43
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• 2007

프로옵틱스(대표.홍미혜/www.prooptics.co.kr)가 최근 Line CCD용 2um 분해능 PCB, LCD 검사 렌즈로 산업자원부 기술표준원으로부터 NEP 신제품인증을 받으며 다시 한번 저력을 과시했다. 광학산업계에서 24년간의 풍부한 연구실적과 현장경험을 바탕으로 축적한 정진호 소장을 구심점으로 한 전문 R&D기업인 프로옵틱스는 '남들이 못하는 고부가가치 제품에 도전한다'는 모토를 가지고 반도체 검사용 광학계 개발에 주력해 왔으며 향후에는 반도체 스텝퍼용 노광장치 및 인공위성 광학계와 같은 최고의 고부가가치 산업용 광학계 제작에 도전하여 세계속의 선도기술업체로 우뚝 서겠다는 목표를 가지고 있다.

• The Optical Journal
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• s.128
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• pp.38-41
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• 2010

HMD(Head mounted Display)는 보안경이나 헬멧 형태로 눈앞의 지근거리에 초점이 형성된 가상스크린을 보는 안경형 모니터 장치로서 예전에는 군사용 시뮬레이션이나 가상현실(VR-Virtual Reality)을 실현하기 위해 개발되었으며, 양쪽 눈의 근접한 유치에 설치된 1인치 이하의 LCD, OLED, MEMS panel 등 마이크로 디스플레이에서 발생되는 이미지를 광학시스템을 통해 확대하여 대형 가상화면을 형성한다. IT 산업의 비약적인 발전에 힘입어 휴대용 동영상 및 모바일 정보검색, 3D의 시대가 대두됨에 따라 휴대폰이나 PMP의 작은 화면으로는 만족하지 못하는 소비자의 수요에 적합한 개인 휴대용 모니터 장치로, 3D를 구현하는 안경형 모니터로서 향후 크게 형성될 모바일 산업의 핵심제품이 될 전망이다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.05a
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• pp.141-144
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• 2007

BLUs are major component in LCD industry which occupies 90% or more of FPD market worldwide and BLU market is expected to be expanded continuously according to the trend of miniaturization, slimness, low power consumption and low weight. The larger the BLU market scale, the more important standardization of performance evaluation techniques to clearly prescribe the product specification. Currently the government is promoting the establishment of related laws and coincidence with international standards to cope with agreements such as WTO/TBT, but the nongovernmental standardization activities are not enough to be actualized. Furthermore, BLU related components such as CCFL, EEFL, inverter and reflector are already developed for localization to substitute imports with home products but collective standardization, national standardization, and international standardization are still not done. So, performance specifications and evaluation methods for normal fluorescent lamps or industrial lamps are being adopted and used as national standards and safety certification standards instead. Making these standards enables to prepare a chance to penetrate into global market and to promote world best products. Also, by making this collective standard, it provides chances to take part in international standardization activities, to protect domestic industries and technologies, to obtain the trend of advanced technologies, and to be predominant over other countries. That is to say, CCFL standardization helps raise 21st century national strategic technology policy and go ahead of globalization of core technologies.

• Transactions of Materials Processing
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• v.17 no.8
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• pp.657-661
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• 2008

Recently, products of electronic industry and related parts are required to have the thickness thinner and thinner to reduce the part weight. To go with this trend, LGP(light guide plate) of LCD-BLU(Liquid Crystal Display-Back Light Unit: It is one of kernel parts of LCD) for cell phone has the thickness of ${\sim}0.3mm$ and the battery case of cell phone has ${\sim}0.25mm$. Accordingly, high speed injection molding is required to mold products which have thinner parts. To achieve high speed injection and proper control of hydraulic unit, various design was applied to conventional injection unit. In the present paper, we concentrated on the molding stability of hydro-mechanical high speed injection machine to make an LGP of 0.3mm thickness.

• Resources Recycling
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• v.24 no.2
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• pp.23-28
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• 2015

Most of the domestic need for tin rely on imports. In this work, a pyrometallurgical process was investigated to recover pure tin from the tin oxides in tin bath which results from the production of flat glass and LCD panel. From the results on the effect of reaction temperature, the highest recovery percentage of tin was obtained at $1350^{\circ}C$. The recovery percentage of tin was improved to 88% by employing the first and second smelting step. Electrorefining of the crude tin thus obtained led to pure tin with purity higher than 99.9%.

• Membrane Journal
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• v.23 no.3
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• pp.189-203
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• 2013

F-gases, gases containing fluorine such as perfluorocarbons (PFCs), sulfurhexafluoride ($SF_6$), nitrogen trifluoride ($NF_3$) are known to have green house effects. Although the net emission rates of gases containing fluorine are much lower than those of $CO_2$, their contribution to global warming cannot be ignored because of their extremely high global warming potential (GWP). F-gases mainly have been used for a variaty of applications in the semiconductor/LCD processes and in the electric power distribution industry of the national key industry. One of practical solutions of controlling the emission rates of F-gases is to reuse by separation and recovery of F-gases of low concentration from the gases mixtures with nitrogen or air. This work investigates some methods for F-gases recovery and separation around the membrane-based process.

• Journal of the Korean Society of Industry Convergence
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• v.12 no.2
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• pp.99-105
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• 2009

Among a few items with world wide competitiveness are the semiconductor and the LCD. Grinding/polishing is the most significant process in manufacturing semiconductor wafers and LCD panels, the most critical quality of which is the precision rate of the machined surfaces. It is well known that the control of the vibrations is the major factor in maintaining superb machined surfaces. In this paper the dynamic properties of a grinding machine have been investigated through the frequency analysis test and the computer simulation to deduce ideas of design modifications for improved stability. The alterations have been applied to the simulation model, which is supposed to have identical dynamic property with the original structure, to identify the effects and to finally achieve the satisfactory level of stability. The result shows that the machine can have much improved stability with relatively simple design changes, and also can improve the surface quality of the products.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.5
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• pp.689-696
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• 2011

Feed industry began to demand that beyond simple feeds to meet the needs of customers with a premium catering by economic development situation and, depending on the user's convenience and customer needs. But tableware introduced in the feed system, the introduction of RFID. High and low temperatures and salinity problems that RFID chips, the feed system malfunction. In this paper, infused with IT Convergence Technology was carried out for a smart lunch by putting RFID chips in the Food Court distribute food. Food court meal to ensure stability of the system was a smart lunch that Hot food ($125^{\circ}C$) and cold ($-40^{\circ}C$) and salinity reflecting foods in High temperature, low temperature experiments, through salt spray test. In addition, the existing straight distribute food, scramble distribute food, Marketplace distribute food, Food Court and the advantages of a comparative analysis of distribute food investigated. Through this paper distribute food will contribute to the Food Court. IT convergence technology (RFID, LCD, S/W, H/W) to apply the feed industry in the development of Smart Food Court.