• Journal of the Korean Graphic Arts Communication Society
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• v.25 no.1
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• pp.11-26
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• 2007

In this paper, an experiment was done where the input device used the linear multiple regression and the sRGB color space to perform a color transformation. The output device used the GOG, GOGO and sRGB for the color transformation. After the input device underwent a color transformation, a $3\;{\times}\;20\;size$ matrix was used in a linear multiple regression and the scanner's color representation of scanner was better than a digital still camera's color representation. When using the sRGB color space, the original copy and the output copy had a color difference of 11. Therefore it was more efficient to use the linear multiple regression method than using the sRGB color space. After the input device underwent a color transformation, the additivity of the LCD monitor's R, G and B signal value improved and therefore the error in the linear formula transformation decreased. From this change, the LCD monitor with the GOG model applied to the color transformation became better than LCD monitors with other models applied to the color transformation. Also, the color difference varied more than 11 from the original target in CRT and LCD monitors when a sRGB color transformation was done in restricted conditions.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07b
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• pp.1067-1070
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• 2005

A large size flat panel LCD-TV must fulfill different requirements than a desktop LCD-monitor: The contrast must be much larger, the viewing angle should be as wide as possible and the switching times must be shorter to allow moving pictures to be displayed naturally. The "Vertically Aligned" technology is most promising to realize such a product. LC-material development for this technology began at Merck about 10 years ago. New materials based on the 1,1,6,7-tetrafluoroindane skeleton were recently synthesized via ortho-metallation and intramolecular Heck cyclization followed by an oxidative fluorination procedure. The materials offer improved properties over liquid crystals currently employed in flat panel LCD-TVs.

• 한국정보디스플레이학회:학술대회논문집
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• 2000.01a
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• pp.1-4
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• 2000

We have developed a high performance vertical alignment TFT-LCD, that shows a high light transmittance, and wide viewing angle characteristics with an unusually high contrast ratio. In order to optimize the electro-optical properties we have studied the effect of cell parameters, multi-domain structure and retardation film compensation. With the optimized cell parameters and process conditions, we have achieved a 24" wide UXGA TFT-LCD monitor (16:10 aspect ratio 1920X1200) showing a contrast ratio over 500:1, panel transmittance near 4.5%, response time near 27 ms, and viewing angle higher than 80 degree in all directions.

• Journal of the Korea Computer Industry Society
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• v.2 no.12
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• pp.1523-1532
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• 2001

The tophead monitor is a dual screen monitor that concludes auxiliary monitor with size 6.4 inch on the top of monitor. The bottom monitor screen provide previous function in the same way as before and the auxiliary monitor screen is arranged contents of internet advertising icon, banner advertising icon, moving picture screen, mail icon, etc. If you click contents, contents is moved peristaltically with the bottom monitor screen. The dual monitor screen is controlled by mouse and keyboard in the same way as before.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.5 no.7
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• pp.1195-1203
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• 2001

The tophead monitor is a dual screen monitor that concludes auxiliary monitor with size 6.4 inch on the top of monitor. The bottom monitor screen provide previous function in the same way as before and the auxiliary monitor screen is arranged contents of internet advertising icon, banner advertising icon, moving picture screen, mail icon, etc. If you click contents, contents is moved peristaltically with the bottom monitor screen. The dual monitor screen is controlled by mouse and keyboard in the same way as before.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.41 no.6
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• pp.33-41
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• 2004

This paper proposes a color matching 3D look-up table simplifying the complex color matching procedure between a monitor and a mobile display device. In other to perform color matching, it is necessary to process color of image in the device independent color space like CIEXYZ or CIELAB. To obtain the data of the device independent color space from that of the device dependent RGB color space, we must perform display characterizations. LCD characterization error using S-curve model is larger than tolerance error since LCD is more nonlinear than CRT. This paper improves the S-curve model to have smaller characterization error than tolerance error using the electro-optical transfer functions of X, Y, and Z value. We obtained images having higher color fidelity on mobile display devices through color matching experiments between monitor and mobile display devices. As a result of this experiments, we concluded that the color matching look-up table with 64(4${\times}$4${\times}$4) is the smallest size allowing characterization error to be acceptable.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.3
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• pp.483-487
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• 2007

In this study, we develop a new remote monitoring system for TFT-LCD panel test automation. Having to realtime monitor of Ti-Con board, this system needs to discrimination whether breakdown or not that is able to transmit processing data for engineer at long distance place using TCP/IP. The result of the development, that can be fast opposition to the breakdown and the multiple processing

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05a
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• pp.671-674
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• 2003

본 논문에서는 고차 신경망 (High-order Neural Network) 을 이용한 LCD 모니터의 색 보정 방법에 관해 제안하였다. 스캐너를 통해 입력받는 영상과 LCD 모니터상에 보여지는 영상의 색을 고차 신경회로망을 통해 보정하였다. 측색기를 이용하여 색표의 값을 측정하고 이를 신경회로망의 출력으로, LCD 모니터에 나타나는 값을 입력으로 하여 학습하였다 입력은 측정값들의 상관항으로 구성되는 집합을 구성하여 고차 신경회로망의 입력으로 사용하였다. 최적의 실험결과를 얻기 위해 은닉층의 수와 노드 수를 변경하며 실험하였다. 실험을 통해 고차 선경회로망을 이용한 방법으로 원색에 가깝게 보정 됨을 확인하였다.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.04a
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• pp.169-172
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• 2003

기존의 Monitor 대응 LCD 에서 TV 대응 LCD로의 개발에 있어서 특성 개선은 다각도로 진행되고 있으나, 무엇보다도 휘도 특성의 개선이 요구된다. TV 대응 LCD Panel 은 Monitor 대응 제품에 비해서 일반적으로 해상도가 낮으므로, 투과율면에서 장점은 있으나, 현재의 B/L 구조로는 만족할만한 성능을 낼 수 없는 상황이다. 고휘도 BL(Back Lignt)를 위해서 EEFL(External Electrode Fluorescent Lamp) 혹은 CCFL 의 복수 사용을 전제로 한 직하방식에 대한 개발 검토가 활발히 이루어지고 있으나, 직하방식에 의한 고휘도화는 램프수의 증가에 따른 인버터의 기구적, 전기적 사양의 증가를 필요로 하며, LCD Module전체의 두께가 증가되는 문제를 가지고 있다. 본 연구에서는 L-Shaped 램프를 적용하여 기본의 기구적인 사양 및 전기적인 사양을 유사하게 유지함과 동시에, 고휘도화를 실현하여 TV 대응 수준을 확보하였으며, lamp를 floating구동하여 램프편측 전압 500V를 사용하면서 655 nit의 휘도를 달성하였다.

• Journal of Digital Contents Society
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• v.5 no.1
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• pp.73-78
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• 2004

In this paper we implemented a field-sequential stereoscopic endoscope system that can generate stereoscopic images with different perspective depth using LCD shutter. The stereoscopic image is generated form stereoscopic adapter that has LCD shutter. We have compared the stereoscopic depth of a field-sequential stereoscopic endoscope system with that of the conventional endoscope system. And the implemented system is verified by evaluation the field-sequential stereoscopic image on a Monitor. This system will be use to medical instruments in time.