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Chip-on-glass LCD Drivers For High-resolution, Vertical Alignment Displays

Blaze Display Technology Co., Ltd. | Updated: Mar 08, 2017

NXP Semiconductors today announced the production ramp-up of two new chip-on-glass (COG) LCD drivers – the PCA8539 and the PCA2117 – specifically designed for driving vertical alignment (VA) displays. The COG LCD drivers provide high contrast, true black background, a wide viewing angle, and excellent image quality, even at extreme temperatures.

VA displays offer many advantages, but typically require a higher LCD supply voltage and higher frame frequency compared to conventional twisted nematic (TN) displays. The PCA8539 and PCA2117 allow an LCD voltage up to 16V with accurate software-programmable temperature compensation for high and stable contrast over an extended temperature range of −40°C to 105°C. The new COG drivers also offer an on-chip oscillator with calibrated and programmable frame frequency in the range of 45 Hz to 360 Hz. The drivers can be used for conventional twisted nematic displays with any backlight colour.

The PCA8539 is a single-chip LCD driver that generates drive signals for any static or multiplexed LCD with up to 18 backplanes, 100 segments, and graphics of up to 1800 display elements. Ideally suited for driving VA displays in harsh environments, the PCA8539 is also AEC-Q100 compliant for automotive applications such as climate control units, instrument clusters, and car infotainment systems. The PCA8539 is also optimised to drive big displays size up to 7" and simplified Chinese and Japanese characters. Samples and demo boards are available immediately.


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