• Journal of Information Display
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• v.11 no.2
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• pp.63-67
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• 2010

In these authors’ previous paper, it was shown that grey-level stability is one of the main drawbacks of the time-sequential stereoscopic 3D display. In the present study, it was demonstrated that a videoluminance meter can be used to rapidly and easily check the quality of such display. A dedicated pattern was applied to simultaneously check the effect of the grey level on the other eye and the effect of the temporal synchronization. The results were compared with those provided by a temporal model of the display, which was obtained by measuring its temporal behavior. The visual impact of the grey-level instabilities was precisely quantified, and they were found to be a major source of imperfections for the aforementioned display.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.911-912
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• 2006

The recent growth in the portable display industry has been dominated by flexible display, moreover, several developing of using LCD technology has been in making the flexible display work effectively, however flexible device is not practical. Recently, the study on the multi-display screen has been published as the needs of larger screen in mobile device has been increased. The multi-display screen which is composed of two LCD panels, has the characteristics of the seamless gap between two panels. To meet the needs of this multi-display, in this paper, the study is performed to design the seamless device which consist of LCD panels, light film, back light and driver, and finally, we evaluated the effectiveness of seamless folding mechanism.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1462-1465
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• 2009

Because of its weak points that narrow viewing angle and grayscale inversion, 'bare' twisted nematic (TN) LCD has some limits to use as a display device, though its great strong points that low cost, high yield, simple design, high transmittance and normally white. The 'WideView(WV)' film which introduced by Fuji co., has been good solution to extend the viewing angles of TN mode, therefore that film have been used generally for TN panels needed wide viewing angle. This paper introduce the research to find the parameters of the Wide view film and a TN panel which affect viewing angle characteristics and how to adjust those parameters.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1228-1231
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• 2009

This paper presented an automatic system for display quality measurement by image processing. The goal is to replace human eyes for display quality evaluation by computer vision and get the objective quality review for consumer to make purchase of monitor or TV. Color, contrast, brightness, sharpness and motion blur are the main five factors to affect display quality that could be measured by supplying patterns and analyzing the corresponding images captured from webcam. The scores are calculated by image processing techniques. Linear regression model is then adopted to find the relation between human score and the measured display performance.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.625-628
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• 2009

In the bistable chiral splay nematic (BCSN) mode, the splay and ${\pi}$ twist states are used for the two stable states. The switching property is strongly dependent on the amplitude of the electric field. In this paper, we investigated the gray scale capability of BCSN liquid crystal display (LCD) by the gradual horizontal electric field caused the interdigital electrode of by the inequality gap. We demonstrate the gray scale of the BCSN LCD during transition process under the horizontal electric field.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.43-46
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• 2007

Though bottom emission AM-OLED has advantages in respect of mass production, the bottom emission type is underrated due to its low aperture ratio and low color gamut, compared with top emission type. In this paper, we demonstrate that the color gamut up to 89 % can be simply achieved by depositing dielectric multilayers, whose thicknesses are determined using an optical simulation program, prior to formation of Si layer.

• Korean Journal of Optics and Photonics
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• v.24 no.4
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• pp.168-175
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• 2013

An information display device is a key component in the information society. A liquid crystal display is the most widely used among information display devices. However, its performance still needs to be improved in order to survive in competition with other information display devices. In this paper, we explain the structure and the operation principle of a liquid crystal display device and introduce our recent research activities on liquid crystal mode technology.

• Proceedings of the KIPE Conference
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• 1996.06a
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• pp.113-116
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• 1996

A model of a photovoltaic array written in PSPICE is presented in this paper. PSPICE is used to display array characteristics (I-V, P-V curve) as a function of parameters such as insulation and temperature. This paper is display in detail through a example of SM-50 model.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08b
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• pp.1661-1663
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• 2007

The contrast of display is one of the important specifications. Even if the contrast indicates luminance range which is a capability of the display and is greater in lower luminance or higher luminance, we consider that the greater contrast gets not the better performance. It is not the same value in human visual system. In practice, it is difficult to achieve the full dynamic range seen by human beings using electronic equipment. Therefore, we consider ambient condition and human perception to calculate perceptual contrast using the CIECAM02. In this paper, we propose perceptual contrast that is calculated using the brightness of CIECAM02.

• Journal of the Korean Institute of Telematics and Electronics
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• v.19 no.5
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• pp.32-37
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• 1982

This paper shows a design method of English/Hanguel/Chinese display controller using address conversion thchnique and DMA in the raster scanning graphic CRT display by giving a design example (64 characters$\times$16 lines display controller).