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WVGA TFT LED backlight provides user brightness control

Tue, 09/20/2011 - 8:20am
ECN Europe

Hitachi Europe’s Display Products Group has introduced a compact 8.0″ wide aspect ratio TFT display module. The TX20D28VM2BAB has a display resolution of 800 x 480 pixels (WVGA), an integrated LVDS data interface and the company says it delivers excellent optical performance.

Picture: Hitachi

The transmissive display continues Hitachi’s integration of robust high brightness LED backlights in medium size TFT display modules. The white LED backlight helps to provide image uniformity and delivers a brightness of 550nits with a half brightness lifetime of 40K hours. A contrast ratio of 600:1 ensures display images are clear and bright.

Ideal for applications in high brightness environments where the lifetime of the backlight is not a critical requirement, the user has direct access to the LED backlight driving circuit. By driving the LEDs with a current of 20mA, a higher brightness of 900nits can be achieved. This will however reduce the half brightness lifetime of the backlight to typically 20K hours.

The TX20D28VM2BAB display module features compact dimensions of 189mm (w) x 120mm (h) x 7.5mm (d) and weighs 170g. A 20-pin LVDS data interface supports a colour palette of up to 262k colours. The display module will operate safely and reliably at temperatures between -20°C and +70°C.

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