LCD modules with white LED backlighting

NEC LCD Technologies has introduced two TFT LCD modules incorporating white LED backlights for industrial applications. The modules consume less power and are substantially thinner and lighter than comparable LCD modules incorporating cold-cathode fluorescent lamp (CCFL) backlights.

Recently, the demand for industrial applications using LCD modules equipped with white LED backlight systems has risen due to the systems’ lower power consumption, thinner and lighter-weight backlight housings and higher resistance to shock and vibration compared to CCFL-based LCDs. Furthermore, white LEDs do not require an inverter circuit, which generates high-frequency noise and harmonic current that can cause peripheral equipment malfunctions and hinder precise testing results.

The 10.4" module, part number NL10276BC20-12, with extended graphics array (XGA) resolution, and the 8.9" module, part number NL10260BC19-01D, with wide super-video graphics array (WSVGA), offer numerous benefits over conventional CCFL products. These modules with LED backlights have advantages which include durability for industrial use and design optimisation that yield a more than 40% reduction in module thickness, greater than 50% reduction in weight and approximately 50% saving in power consumption compared with CCFL-based LCD equivalents. To address the diverse demands of industrial display applications, each model features a wide operating temperature range of –20 to +70 °C, a replaceable LED backlight unit and long-term product support.