Automotive heads-up displays (HUDs) have existed since 1988, evolving over the years to become brighter and more colorful. However, even the most advanced versions of today still feel somewhat basic. That was until Hyundai Mobis, a supplier of auto parts for Hyundai, Kia, and Genesis, introduced what it claims to be the world’s first full-windshield holographic display (HWD) at CES 2025. This innovative technology appears to mark a significant leap in the evolution of in-car infotainment.
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A Multi-Zone Display for Both Drivers and Passengers
Unlike traditional reflective HUDs, which typically project images onto the windshield from a single source, the Hyundai Mobis HWD relies on multiple projectors placed beneath the dashboard and a special optical film embedded directly into the windshield. This combination enables the system to produce brighter, more vibrant images that are viewable from much shallower angles. In fact, the images displayed by the HWD are so finely tuned that unless viewed from the correct angle, they may be completely invisible to the observer.
On the Kia EV9 demo vehicle, the HWD does not limit itself to a small section at the bottom of the windshield. Instead, the display spans across the entire width of the windshield, divided into three distinct zones: two for the driver and one for the passenger. The driver’s side of the display can show basic information such as vehicle speed, directions, and more. However, it’s the real-time 3D maps that bring the display to life, offering dynamic adjustments based on the vehicle’s position. This provides an entirely new layer of navigation assistance, giving drivers an immersive and intuitive tool for reaching their destinations.
For passengers, the dedicated section of the display allows them to independently view vehicle information or engage with entertainment options such as videos and games. A key feature of Hyundai Mobis’ system is that the technology’s limited viewing angles prevent the driver from seeing the passenger’s side of the HWD, eliminating the risk of distractions. The system itself is quite sleek, with most of the technology hidden beneath the dashboard. Only a subtle outline, visible when the display is off, hints at the optical film embedded within the windshield.
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Enhancements and Potential Applications
Dr. Minho Shin, an engineer at Hyundai Mobis, elaborated on the potential of this technology in an interview at CES 2025. Through a translator, Dr. Shin explained that the HWD is intended to augment the main infotainment display in modern vehicles, which would likely serve as the primary interface for controlling the information displayed on the windshield. For passengers, there is potential for them to control their section of the HWD by casting content from their smartphones. Furthermore, the strategic placement and size of the display make it easier for drivers to interact with tools like 3D maps, compared to existing HUD technology.
Dr. Shin also mentioned that future versions of the HWD could potentially cover the entire width and height of the windshield, providing an even more immersive experience. However, due to regulatory limitations in many countries, this broader functionality is not expected to be widely available in the near future.
At CES 2025, BMW also showcased similar technology with its Panoramic iDrive system, which integrates into the company’s existing infotainment platform. BMW’s system is expected to be available on all new models by the end of 2025. However, upon closer inspection, Hyundai Mobis’ HWD appears to offer a more transparent and seamless solution. BMW’s system uses a black film at the bottom of the windshield to display the HUD, which may affect the overall visibility for the driver, while Hyundai’s holographic display ensures an improved driver awareness and visibility with its fully transparent design.