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NEC Announces New 7.0-inch Amorphous-Silicon TFT Liquid Crystal Display

NEC LCD Technologies, together with its sales and marketing channels in the Americas and Europe, NEC Electronics America and NEC Electronics (Europe) GmbH, today introduced a new 7.0-inch (18 centimeters diagonal) amorphous-silicon thin-film-transistor (TFT) liquid crystal display (LCD) module, part number NL8048BC19-02, with wide video graphics array (WVGA) resolution.

The new module is an enhancement to NEC’s lineup of LCD modules featuring white LED backlight systems, a lineup that was launched May 2007 with NEC’s 6.5-inch LCD module, part number NL10276BC13-01C. Equipped with a long-life (approximately fifty thousand hours) white LED as the light source for its backlight system, the new 7.0-inch module has a longer life span than modules equipped with conventional white LED backlight systems.

In addition to its low power consumption, the new module comes in a slim-line package that, while lightweight, is highly resistant to shock and vibration. Moreover, the module has been designed with wide-format resolution to meet the rising demand for such in various industrial applications.

The main characteristics of the module are as follows.

1. Long-life white LED backlight system

The module attains wide viewing angles of 160 degrees both horizontally and vertically, high contrast ratio of 1000:1 and fast response time of 25 milliseconds. These features enable information to be reproduced on screen quickly, precisely and without stress.

By incorporating highly luminescent, highly efficient white LEDs into the backlight system, which eliminates the need for an inverter circuit, NEC has been able to reduce power consumption in the new module by more than 30% compared to modules that use a cold-cathode fluorescent lamp (CCFL). The white LED backlight system also enables thickness and weight to be reduced by more than 15% compared to conventional modules equipped with CCFL-based backlight systems.

Furthermore, the risk of damage to an LCD due to shock and vibration is small compared to a CCFL with a glass tube structure, because the white LED is face mounted, making the module small, light and more reliable.

2. High levels of visibility

The module attains wide viewing angles of 160 degrees both horizontally and vertically, high contrast ratio of 1000:1 and fast response time of 25 milliseconds. These features enable information to be reproduced on screen quickly, precisely and without stress.

3. Wide operating-temperature range

A wide operating temperature range, from –20 to +70 degrees Celsius, guarantees operation even in the most extreme conditions.

Recently, the demand for LCD modules equipped with white LEDs in the backlight system has risen rapidly in various industrial fields. Since most portable terminals are battery-powered, they require low power consumption and compact, lightweight displays that are durable enough for use in severe environments, such as outdoors or in vehicles. Meanwhile, the demand for wide-format displays also has been rising rapidly, even in the industrial segment. Those requirements are based on the need "to display as much information using as little space as possible" and "to display the touch panel on the screen without sacrificing conventional information in the display area.” The need for LCDs with white LED-based backlight systems that can be used in measurement equipment is also increasing, because white LEDs do not require an inverter circuit, which generates high-frequency noise and harmonic current and can hinder precise testing results. NEC’s new 7.0-inch LCD module has been developed to meet all of those requirements and more.

NEC LCD Technologies will continue to enhance its lineup of LCD modules featuring white LED-based backlight systems to address the needs of a variety of industrial applications. In addition, the company aims to improve the range of environments where LCD modules can be used through continued performance enhancement of its broad range of LCD modules.

In addition to the new 7.0-inch module, NEC LCD Technologies also offers a new 6.5-inch color TFT LCD module, part number NL10276BC13-01D, with extended graphics array (XGA) resolution. Both products will be showcased in NEC LCD Technologies’ booth #40-4 and #40-10 at “Display 2008”, which is being held from April 16-18 in Tokyo Big Sight, Japan.

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