The 3.5-in. NL2432HC22-45A amorphous-silicon transflective thin-film transitor (TFT) LCD module from NEC LED Technologies offers quarter video graphics array (QVGA) resolution with higher reflection properties than previous 3.5-in. modules. It’s designed for use in small, professional applications such as handheld terminals and personal digital assistant (PDA) and portable navigation device (PND) applications.

Article Tools

• 

The module incorporates the company’s proprietary super-reflective natural light (SR-NLT) technology, which enhances LCD performance in outdoor lighting environments. In reflective mode, it capitalizes on NEC’s optimum LCD panel design to provide excellent visibility and viewing angle characteristics, even in outdoor daylight conditions, according to the company.

Generally, portable devices use transmissive or transflective LCD modules that can operate in both transmissive mode (using the light from the backlight) and reflective mode (using the available ambient light). In both types, the backlight consumes between 70% and 90% percent of the display’s total power consumption. Yet the NL2432HC22-45A combines the company’s transmissive and SR-NLT technologies to provide a transflective LCD module solution that can operate with the backlight either on or off, depending on the lighting environment, reducing power consumption.

The NL2432HC22-45A has a reflection ratio of 16% and a contrast ratio of 20:1 in reflective mode. It also achieves improved viewing angle characteristics in reflective mode by diffusing reflection for wide-angle viewing. This allows for high visibility, with the backlight turned off, under strong light conditions such as outdoor daylight viewing as well as under indoor ambient-light conditions.