• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.71-71
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• 2009

Recently several LCD TV makers including Samsung, LG and Sony actively have released LED LCD TV models on market. LED LCD TV is just which applied LED BLUs so that its color contrast ratio fairly enhance up to 1 million:1 and its thickness minimize to a few mm. Even this aspect seems somewhat to be each panel maker's strategies for prior market occupations on whole TV market. Without regard to the reasons, we do obviously meet a new era of technically advanced LCD TV. However we have still lots of problems or issues which we must overcome technically including LED chip/packaging process, secondary optics treatment, heat managements and cost reduction issues. Here I would like to forecast market volume and trend of LED LCD TV first and then discuss above almost of technical issues and suggest their possible solutions. Even these solutions looks better technologies and if they may increase production cost significantly, we will not prefer to choice that technology since lower cost policy can open the market. Finally I'm trying to suggest how well LED, as future light source, can apply to future LCD TV technologies.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.513-516
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• 2007

We introduce a new copolymer alignment film made by bridge-building structure. It is a better film to decrease the image-sticking level in LCD displays. It is noted that the image-sticking was decreased by preventing ion mixing between inter-layers through high hardness. We have investigated the electrical characteristics such as pretilt angle, Residual DC, VHR by changing cure temperature and process delay time conditions of the new alignment film. In this paper, we have investigated the solution for the deep-rooted image defect and incidentally got a contrast ratio improvement by high anchoring force and hardness elevation through the new copolymer alignment film.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.5
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• pp.575-582
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• 2014

One of the most important decision making is which product's components should make in-house and which should they outsource. This paper suggests a framework to solve above question. This paper applies to LCD TV industry with AHP analysis. The results shows that Scaler chip, LCD panel, MPEG decoder, and Video decoder are important components. Samsung Electronics turn out make in-house these core component. This research will be a good guideline for selecting core component.

• Proceedings of the KIEE Conference
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• 2004.11c
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• pp.629-631
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• 2004

The proposed output buffer is presented for driving large-size LCD panels. This output buffer is designed by adding some simple circuitry to the conventional two-stage operational amplifier. The proposed circuit is simulated in a high-voltage 0.35um CMOS process with HSPICE. The simulated result is more improved settling time than that of conventional one.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2005.05a
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• pp.377-380
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• 2005

LCD 패널제조 사업장에서 발생되는 공정데이터는 매일 1${\sim}$2Gb에 달한다. 또한 관리대상 공정 및 품질 특성은 수백개에 이른다. 적절한 SPC Plan에 따른 주요관리대상 공정특성의 선정과 이에 기초한 데이터베이스의 설계 및 Legacy system과의 인터페이스, 그리고 메시지와 데이터송수신 시스템의 주요방법론을 논하고자 한다. 주요 내용으로는 LCD 산업에서의 SPC 시스템을 시스템의 관점에서, 그리고 시스템 Performance의 향상을 위한 방법론 등을 들 수 있다.

• Journal of the Korean Society for Precision Engineering
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• v.27 no.12
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• pp.92-98
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• 2010

The design of press bonding tool in LCD module equipment is a very complex and difficult task because many design able variables are involved while their effects are not known. It takes longtime experiments and much expenses to verify the effects of these design variables. However the optimization of bonding tool using OLB(outer lead bonding) and PCB Bonding is a very important problem in LCD manufacturing process, so much design efforts have been made for improving the bonding tool performance. In this paper, a reasonable and fast process which gives optimized solution under the design requirements has been presented. Both analytical and statistical methods are employed in this process. A reliable analytic model using experiment-oriented FE analysis can be obtained, in which the regression equations that predict the tool efficiency from various DOE method are found. Improvement of tool efficiency could be estimated by the regression equations using meaningful factors converged by RSM(Response Surface Method). With this process a reasonable optimized solution that meets a variety of design requirements can be easily obtained.

• Journal of the Korean Society of Clothing and Textiles
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• v.37 no.8
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• pp.1044-1059
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• 2013

The fashion industry has become more interested in sustainable fashion design due to the demand for environmental action based on increased social responsibility awareness and environmentalism. In the current sustainability fashion industry, guidelines for sustainable fashion design are essential. This study suggests guidelines for a sustainable design process based on a theoretical and practical approach. An analysis of several global fashion brands will be applied to the whole apparel design process. This paper will explore the sustainable fashion design process and deal with LCD, as an important factor, by analyzing three global fashion brands: 'H&M', 'NIKE', and 'Levi's'. These three companies are the most active in the area of sustainable performance. The sustainable fashion guidelines will be controlled based on a strategy of practical use in design for sustainable (DFS) fashion industry. The results indicate that the fashion industry has to invest heavily in the future rather than focus on short-term profits; consequently, sustainability is a new growth direction for fashion companies. In addition, the fashion industry should work towards sustainable design under a clear understanding of its goals.

• Journal of IKEEE
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• v.11 no.4
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• pp.307-314
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• 2007

In this paper, we propose an image contrast enhancement algorithm for an LCD TV. The proposed algorithm consists of two processes: the image segmentation process and the tone curve control process. The first process uses an automatic threshold technique to decompose an input image into two regions and then utilizes a hierarchical structure for real-time processing. The second process generates a gray level tone curve for contrast enhancement using a weighted sum of average tone curves for two segmented regions. Experimental result shows that the proposed algorithm outperforms the conventional contrast enhancement methods for an LCD TV.

• Laser Solutions
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• v.10 no.2
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• pp.5-15
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• 2007

A new printing process for LCD color filter is proposed in this work by using the localized laser heating, which is called laser-induced spray printing (LISP) process. The LISP is a non-contact process, which injects the ink from the donor substrate to the glass substrate by the bubble pressure induced by laser heating. The temperature distribution of the donor substrate is calculated numerically to explain the ink ejection phenomena. The composition of the ink was includes the red pigment, n-butanol, xylene, BCA and epoxy. Experiments were conducted by using the fiber laser system, and the color filter patterns were deposited successfully under the proper laser heating conditions.

• Journal of the Korean Institute of Telematics and Electronics A
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• v.32A no.12
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• pp.149-158
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• 1995

This paper describes the development of a software tool LCD FRAME that may guide the analyzing process for the electrical characteristics and the design procedure for constructing the thin film transistor liquid crystal display(TFT/LCD) packages. LCD FRAME can analyze its electrical characteristics from the TFT/LCD system package configuration, and provide the design variables to meet the user's requirements. These analysis and design procedure can be done in real time according to the model at simplified package level of TFT/LCD. LCD_FRAME is an object-oriented expert system which considers package elements as objects. With this LCD_FRAME software tool, we analyzed the I-V characteristics of a-Si TFT and its signal distortion which has maximum 1.58 $\mu$s delay along the panel scan line of the package containing 480 ${\times}$ 240 pixels. We designed the package structure of maximum 6.35 $\mu$s signal delays and 3360 ${\times}$ 780 pixels, and as a result we showed that the proper structure of 20 $\mu$m scan line width, 60$\mu$m panel TFT gate width and 8 $\mu$m gate length. This LCD_FRAME software tool provides results of the analysis and the design in the form of input files of the SPICE program, text data files, and graphic charts.