Single-Chip Multi-Screen

Definition and Technical Concept

"Single-Chip Multi-Screen" is a technology solution that utilises a single high-compute automotive-grade System-on-Chip (SoC) to simultaneously drive and control multiple displays within a vehicle. It replaces the traditional distributed architecture where each screen requires a dedicated chip, centralising dispersed processing power onto a single processor to enable seamless multi-display interaction and coordinated display management through unified resource scheduling. This technology represents a direct implementation of domain-centralised electrical and electronic (E/E) architecture within the digital cockpit.

Core Implementation Architecture

The hardware backbone of "Single-Chip Multi-Screen" is the Cockpit Domain Controller (CDC), powered by an integrated high-performance SoC. The chip typically incorporates heterogeneous computing units such as the CPU, GPU, and NPU, dedicated to handling logic processing, graphics rendering, and AI inference tasks respectively.

At the software level, the setup relies on hypervisor technology to securely isolate and concurrently run multiple operating systems on the same silicon. For instance, the safety-critical digital instrument cluster operates on QNX, whilst infotainment features run on Android with its extensive app ecosystem. This architecture ensures uncompromising stability and real-time responsiveness for vital instrument readouts, whilst supporting a rich suite of third-party applications.

Key Benefits and Industry Applications

By consolidating display controls into a single chip, this approach effectively slashes system complexity and overall vehicle bill-of-materials (BOM) costs. Functionally, it enables seamless cross-screen sharing of navigation, media, and video feeds, delivering a connected multi-screen cabin experience across the "central infotainment screen + digital instrument cluster + front passenger display + rear passenger screens + AR-HUD".

Currently, Qualcomm's Snapdragon platform (including the SA8155P, SA8255P, and SA8295P) leads the premium segment, with a single chip capable of powering up to 10 displays. Chinese solutions such as the Rockchip RK3588M support up to 7 displays and are in full mass production across multiple vehicle models; the SemiDrive X9 series is also widely deployed in integrated cockpit-parking configurations. For entry-to-mid-range applications, chips like the AutoChips AC8015 drive dual independent displays to cater to budget-conscious smart cockpit requirements.

Future Trends

While "Single-Chip Multi-Screen" remains the dominant configuration in modern smart cockpits, the industry is evolving towards "Single-Chip Multi-Domain"—where a single unified processor handles workloads for both the cockpit and autonomous driving systems, achieving a higher level of integration known as "Cockpit-Driving Integration".