(Nikkei BP Group)
(No.1 High-Tech News Site in Japanese)
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| [LCD/PDP International '98] TFT-LCDs Featuring Wide Viewing Angles on Display
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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.
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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
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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
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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
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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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