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AUO integrates LED driver tech from ADI into automotive widescreen displays

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By Christoph Hammerschmidt


Display specialist AUO Corp. will use semiconductor manufacturer Analog Devices’ (ADI) matrix LED display driver technology in its widescreen displays for the automotive industry. The two companies recently announced an agreement to this effect.

In order to provide drivers and front seat passengers with a more immersive user experience, car manufacturers are increasingly equipping their latest generation of vehicles with widescreen displays. As driving becomes more automated, the demands on these displays are shifting from the typical infotainment hub to a safety centre with a visual display of the vehicle’s surroundings. In addition, with the electrification of cars, low energy consumption is becoming increasingly important.

To meet these requirements, ADI has developed a concept called local dimming, which drives LEDs behind the screen in the car. The driver is based on proprietary power process technology and includes all external P-channel FETs (PFETs), enables high resolution and high contrast ratio for large automotive displays, provides improved diagnostics of LEDs and reduces ghosting. The system is said to reduce power consumption by at least 50% compared to the conventional edge-light display, ADI promises. Analog Devices’ power portfolio is certified to ASIL B to D. This is significant for many automotive manufacturers as they require functional safety to ensure safe and reliable operation in the vehicle.

“In order for us to maintain our position as one of the world’s leading manufacturers of automotive displays and a supplier to some of the largest OEMs, we decided to use Analog Devices’ local dimming drivers,” says Simon Hsu, Head of Automotive Business Unit at AUO. The decisive factors were the low power consumption, the good readability even in sunlight and the high contrast ratio.

AUO’s locally dimmable automotive displays use the MAX25500 4 x 24 automotive LED matrix driver. The component is available now and belongs to Analog Devices’ local dimming driver family for automotive displays.

https://www.auo.com

https://www.analog.com

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