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  • [LCD/PDP International '98] TFT-LCDs Featuring Wide Viewing Angles on Display
  • October 30, 1998 (TOKYO) -- Many electronics companies are exhibiting new thin film transistor-liquid crystal display (TFT-LCD) products at the "LCD/PDP International '98" trade fair, which began Oct. 28.
    Some of the panels are designed for use in wide-angle LCD monitors, with viewing angles in excess of 160 degrees, both side to side as well as above and below.

    In addition to Japanese makers, which have already started shipments of their products, three Korean companies are showing wide-angle panels using new technologies:

    Samsung's 15-in. XGA TFT-LCD

    Samsung Electronics Co., Ltd., is exhibiting a 15-in. extended graphics array (XGA) panel (see photo) that uses technology called Patterned Vertical Alignment (PVA), a type of multi-domain VA. Its contrast ratio is 500:1 and its response time is 40 ms.

    Hyundai Electronics Industries Co., Ltd. is displaying a 15-in. XGA panel using technology that it calls Fringe Field Switching (FFS). Nikkei Microdevices believes that this involves the use of indium tin oxide (ITO) comb-like electrodes. The panel has a contrast ratio of 250:1.

    LG Semicon Co. is showing 14.1-in. XGA panels that utilize two new technologies. The first is called Ultra Viewing Angle (UVA), a type of multi-domain VA. The panel based on this technology has a 300:1 contrast ratio and a response time of 30 ms.

    Hitachi's 18.1-in. SXGA TFT-LCD

    The other technology is a non-rubbing four-domain twisted nematic (TN) method. However, it must be noted that this does not match the same performance level as the other technologies already mentioned, because the viewing angle of the panel is 140 degrees and the response time is around 50 ms.

    As for Japanese makers, Hitachi Ltd. is exhibiting an 18.1-in. SXGA panel (see photo) that uses in-plane switching (IPS). This is the first time for Hitachi to show such technology.

    NEC Corp. is showcasing five types of panels, including 20.1-in. and 18.1-in. SXGA models that employ Super Fine TFT (SFT) technology, which is based on IPS.

    Sharp's 18.1-in. SXGA TFT-LCD

    Additionally, among the other exhibitors at the event, Sharp Corp. is exhibiting an 18.1-in. SXGA panel (see photo) that uses Advanced Super V (ASV) technology; Fujitsu Ltd. is showing a 15-in. XGA panel that uses MVA technology; and Matsushita Electric Industrial Co., Ltd. is showing a 19-in. SXGA panel based on IPS technology.

    Related stories:
    LCD Seminar '98 Focuses on Expanding Monitor Market
    Sharp Executive Speaks on Future Role of LCD Industry

    (Nikkei Microdevices)

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    Updated: Thu Oct 29 17:33:14 1998 PDT