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WVGA LCD module features WLED backlighting

Posted: 01 Apr 2008 ?? ?Print Version ?Bookmark and Share

Keywords:WVGA displays? LCD modules? white LED backlighting?


NEC LCD Technologies, together with NEC Electronics America and NEC Electronics (Europe) GmbH, introduced a new 7-inch (18cm diagonal) a-Si TFT LCD module (part number NL8048BC19-02) with WVGA resolution.

The new module is an enhancement to NEC's lineup of LCD modules featuring white LED (WLED) 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 50,000hrs) WLED as the light source for its backlight system, the new 7-inch module has a longer life span than modules equipped with conventional WLED 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.

Key features of the new modules are:

Long-life WLED backlight system - By incorporating highly luminescent, highly efficient WLEDs 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 percent compared to modules that use CCFL. The WLED backlight system also enables thickness and weight to be reduced by more than 15 percent 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 WLED is face mounted, making the module small, light and more reliable.

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

Wide operating-temperature range - A wide operating temperature range, from -20C to 70C, guarantees operation even in the most extreme conditions.

Recently, the demand for LCD modules equipped with WLEDs 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 WLED-based backlight systems that can be used in measurement equipment is also increasing, because WLEDs 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 WLED-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-inch module, NEC LCD Technologies also offers a new 6.5-inch color TFT LCD module (part number NL10276BC13-01D) with XGA resolution.

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