• Journal of Information Display
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• v.1 no.1
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• pp.9-13
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• 2000

In liquid crystal displays, the display mode that represents initial liquid crystal alignment and method of applying voltage, mainly determines the image quality of display. Recently we have developed the fringe-field switching (FFS) mode exhibiting high image quality. In this paper, a pixel concept, manufacturing process, materials, and electro-optic characteristics of the FFS mode comparing with conventional in-plane switching mode, and its possible application to reflective type are discussed.

• Journal of KIISE:Software and Applications
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• v.34 no.5
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• pp.447-454
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• 2007

TFT-LCD(Thin Film transistor liquid crystal display) has become actively used front panel display technology with increasing market. Intrinsically there is region of non uniformity with low contrast that to human eye is perceived as defect. As the gray level difference between the defect and the background is hardly distinguishable, conventional thresholding and edge detection techniques cannot be applied to detect the defect. Between the patterned and un-patterned LCD defects, this paper deals with un-patterned LCD defects by using independent component analysis, adaptive thresholding and skewness. Our method showed strong results even on noised LCD images and worked successfully on the manufacturing line.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.325-328
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• 2010

In this paper, To overcome expression limit of Normal LCD(Seg) for Car audio, We research using Smart phone(Iphone) LCD to overcome weakness of seg LCD, We can express detail LCD DISPLAY using Smartphone(iphone), We can call Car to phone, Smartphone(Iphone) Display can Normal Car audio function Display, using phone Application for car to phon.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.7 s.184
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• pp.130-137
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• 2006

TFT-LCD(Thin Film Transistor Liquid Crystal Display) module is representative commercial product of FPD(Flat Panel Display). Thickness of TFT-LCD module is very thin. It is adopted for major display unit for IT devices such as Cellular Phone, Camcorder, Digital camera and etc. Due to the harsh user environment of mobile IT devices, it requires complicated structure and tight assembly. And user requirements for the mechanical functionalities of TFT-LCD module become more strict. However, TFT-LCD module is normally weak to high level transient mechanical shock. Since it uses thin crystallized panel. Therefore, anti-shock performance is classified as one of the most important design specifications. Traditionally, the product reliability against mechanical shock is confirmed by empirical method in the design-prototype-drop/impact test-redesign paradigm. The method is time-consuming and expensive process. It lacks scientific insight and quantitative evaluation. In this article, a systematic design evaluation of TFT-LCD module for mobile IT devices is presented with combinations of FEA and testing to support the optimal shock proof display design procedure.

• Proceedings of the Polymer Society of Korea Conference
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• 2006.10a
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• pp.148-149
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• 2006

TFT-LCD BLU has been remarkably developed for a recent few years as TFT-LCD market is increased. Recently new BLU technologies and components are developed as more aggressively than before since TFT-LCD panel requires higher quality and resolution. Especially Samsung Electronics and LG Philips LCD of Korea are major LCD panel makers and the major optical materials of LCD BLU and panel for Samsung Electronics have been supplied by Samsung Cheil Industries. In this presentation introduction to main components of LCD BLU will be investigated details. Also characteristics and applications of optical polymers such as PMMA, PET etc for LCD display will be included and finally recent trends in optical materials for LCD BLU will be shown briefly.

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.69-74
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• 2004

System-on-glass technology made with low temperature poly-Si TFT has been rapidly advancing in recent years. We have developed a low-power, narrow edged frame, 1.9inch system-on-glass LCD which fully integrates a 16-bit RGB interface driver and all power circuits required for driving the LCD. In this paper, the latest poly-Si TFT circuit technologies used in the newly developed LCD are discussed. The development trends are also reviewed.

• 한국정보디스플레이학회:학술대회논문집
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• 2006.08a
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• pp.281-285
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• 2006

Recently LG.Philips LCD (hereafter "LPL") has announced the development of the world's largest 100-inch TFT-LCD with Advanced Super IPS technology. This magnificent LCD achieves the feature of a full high definition resolution $1920{\times}1080(16:9)$, 600nit brightness, 3000:1 dynamic contrast ratio, 92% color gamut, 180 degree viewing angle, and 5msec response time at all grays, targeted for HDTV and public display applications. Some unique technologies such as Cu bus line, advanced wide view polarizer, and high color gamut lamp were applied. A new stitching free technology was developed to overcome the size limitation of photo mask in both the TFT and CF processes. The size of the panel (100-inch) based on the wide format (16:9) is determined by the maximum efficiency of world's $1^{st}$ seventh generation line (glass size:$1950{\times}2250mm$) in LPL's Paju display cluster. In this paper, we will discuss the issues of 100-inch TFT-LCD.

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.65-67
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• 2003

LCD TV market is rapidly growing. It is forecasted that the main size of the LCD TV will be about 20" to 52". The IPS mode is going to lead the large TFT LCD technology for TV application among other LC modes which are VA mode, WVTN mode and so on, because the display image quality of the IPS mode is superior to others.

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.19-22
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• 2004

A 30-inch WQXGA+ TFT-LCD Monitor has been developed based on in-plane switching mode with multi-domain. This product adopts Cu electrode which, in spite of low resistivity, was not applied to TFT LCD products because of productivity and reliability problems etc. This low resistivity material makes it possible to clear the problem caused by line delay in such high resolution TFT-LCDs. As a results of successful adoption of innovative materials and technologies, our world's largest TFT-LCD Monitor has best performance for high information display.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.968-971
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• 2009

TFT-LCD display system is nowadays one of power-hungry components in portable products; technique of power reduction is thus essential for production of mobile phone. In this work, we minimize the display power, using computationally intelligent statistical methodology. Compared with a conventional design, 68.474% reductions on the current consumption could be obtained for a 2.2-inch of TFT-LCD display system of mobile phone. The total power consumption of the display system consisting of the backlight system and current consumption of display panel is thus successfully reduced form 68.305mW to 64.06mW (about 6.215% reductions).