• Journal of the Microelectronics and Packaging Society
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• v.14 no.2 s.43
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• pp.1-8
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• 2007

A flat fluorescent lamp (FFL) was developed as a light source for LCD TV Backlight. The channels of FFL were realized by forming the flat glass at high temperature. The performance of the backlight with FFL was shown to improve by optimizing the FFL channel profile that has elliptical shape, 4.4 mm height and 1.4 mm sealing distance. In this paper, the brightness uniformity of LCD TV backlights was investigated by optical simulation of FFL channel profiles. The brightness of LCD TV using FFL with the optimized channel profile was shown to be $576\;cd/m^2$.

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.661-663
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• 2003

In this paper, production of TFT-LCD adopting Cu electrode, in spite of low resistivity, which was not commercially applied to TFT LCD products because of processibility, reliability problems etc. was mentioned. Based on the test result of etch and strip process of Cu electrode, the TFT device using Cu material shows the same characteristics as the conventional TFT devices. We describe the realization of a 20.1" UXGA model which was firstly applied to Cu electrode.

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.757-761
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• 2004

Flat Panel Display (FPD) application of Television (TV) application is booming. Liquid Crystal Display (LCD) is forecasted to play a dominant role for TV application in next years. We review in this presentation LC material development for LCD TV application.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.07b
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• pp.1066-1069
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• 2003

요즘, LCD TV 가 등장하면서 LCD 백라이트로써 LCD TV 에 적용하기 위해서는 무엇보다도 휘도특성의 개선이 요구되고 있다. TV 대응 LCD Panel 은 Monitor 대응 제품에 비해서 일반적으로 해상도가 낮으므로, 투과율면에서 장점은 있으나, 현재의 백라이트 구조로는 만족할만한 성능을 낼 수 없는 상황이다. 그러므로 고휘도 백라이트를 위해서 EEFL(External Electrode Fluorescent Lamp) 혹은 CCFL(Cold Cathode Fluorescent Lamp) 의 복수 사용을 전제로 한 직하방식에 대한 개발 검토가 활발히 이루어지고 있다. 직하방식에 의한 고휘도화는 램프수는 증가되지만 프리즘시트를 사용하지 않아서 가격 경쟁력이 있다. 따라서 본 연구에서는 EEFL 16등을 이용하여 17인치 직하형 백라이트를 제작하여 기구적, 전기적, 광학적 특성을 분석하였으며, 그 결과 11,700 nit 의 휘도를 달성하여 TV 대응 수준을 확보하였다.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07b
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• pp.1153-1156
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• 2005

A backlight for large-area LCD (Liquid Crystal Display)-TVs has been developed using Light Emitting Diodes (LEDs). Performances of the backlight and the methods driving the LEDs are introduced in this research. A spectral relationship between the LEDs and the color filters of a panel were investigated as well. In order to realize a CRT like dynamic effect, the area-focused luminance control (AFLC) technology was adopted in developing the backlight. Thus, a possibility of applying the LEDs to the backlight for large-area LCD-TVs was systematically proved.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07a
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• pp.125-128
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• 2005

The visual perception tests were conducted to determine limits of luminance of a LCD TV from a viewpoint of glare. The results showed that people, who watch TV in their living room, perceive glare above $410\;cd/m^2$ at full window and $590\;cd/m^2$ at 1/25 window.

• 전자공학회논문지 IE
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• v.44 no.2
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• pp.47-53
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• 2007

The inverter using level control block (LCB) was developed to drive LCD TV backlight using FFL light source. The FFL striking time, time for brightness stabilization, and lamp current of FFL backlight were shown to improve by applying LCB in the inverter. It was also shown that the stable driving of LCD TV FFL backlight with the inverter using LCB was possible over the wide temperature range.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07a
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• pp.27-28
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• 2005

We developed Super IPS mode TFT-LCD TV which have contrast ratio over 800:1. To increase contrast ratio, polarizer film, TFT design and color filter photoresist are investigated. In this report, we describe the basic concept and effectiveness of each item. The application of a newly developed color filter photoresist was the most effective for achieving this high contrast ratio.

• 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.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.15 no.9 s.102
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• pp.1092-1099
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• 2005

This experimental study deals with the characteristics of LCD or PDP TV set noise, which are differ form those of CRT TV set. These characteristics are most important for establishing the effective method to reduce noise level, searching for the appropriate exposure level and evaluation method of LCD or PDP TV set noise. This study adopt two measurement method to specify the power level of LCD or PDP TV set noise in anechoic room(ISO 3741) and reverberation room(ISO 3745) . Comparing with each results of the two method, the reverberation room method is more simple in measuring and calculating the power level. And the subjective response test are carried out to select the pair of appropriate adjectives to present the characteristics of LCD or PDP TV set noise. The pair of 17 adjectives are selected from the 168 adjectives which are used in presenting the sound and noise form literature.