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Infinity Solution: Breaking Through LED Driving Bottlenecks and Opening a New Era of Ultra-High Image Quality
1. Introduction
In today’s era of highly popularized information visualization—ranging from outdoor billboards to indoor smart displays, from stage broadcasting to immersive virtual production—LED continues to expand its application boundaries with its advantages of high brightness, wide color gamut, high contrast, and seamless display capability. With the evolution of MLED, the industry’s pursuit of image refinement and ultimate visual performance has reached unprecedented levels. As the key link responsible for illuminating every LED chip, traditional PWM (Pulse Width Modulation) driving technology has gradually become the bottleneck restricting the full release of LED potential. The required frequency will exceed 30 MHz or even higher. PWM driver chips often rely on frequency multiplication to increase GCLK count, which significantly challenges IC processes and costs. Excessive GCLK further results in issues such as EMC interference on LED modules, poor low-gray consistency, and increased power consumption. Pure PWM driving can no longer meet the requirements for finer image quality.
Additionally, brightness and contrast are constrained. Under traditional PWM driving, once the GCLK frequency is set, the minimum and maximum brightness levels become fixed. To break brightness limitations, the only approach is to increase the overall screen drive current (GCC), which raises low-gray brightness and increases power consumption. These PWM limitations restrict contrast performance and dynamic range.
Against this backdrop, the Nova Infinity Solution was developed. Based on hybrid PWM+PAM driving, it integrates mixed driving, intelligent algorithms, and display-control systems to deliver an unprecedented ultra-high-quality display solution for the LED industry.
2. From PWM to PWM+PAM: The Inevitable Technical Evolution
Throughout the development of LED displays, PWM driving technology has long played a central role by regulating brightness through duty-cycle control. However, as MLED advances toward higher pixel density, higher dynamic range, and demanding application scenarios such as virtual production, MLED TVs, and automotive transparent displays, pure PWM driving has become insufficient.
The first limitation lies in the grayscale. Traditional PWM grayscale depth depends on the grayscale clock GCLK. When entering 16-bit or 18-bit grayscale, the required frequency exceeds 30 MHz or more. PWM chips usually use frequency multiplication, increasing GCLK count, which raises IC design difficulty and cost. Excessive GCLK also leads to EMC issues, poor low-gray uniformity, and higher power consumption. Pure PWM driving can no longer support the need for finer image quality.
Another limitation is brightness and contrast. Once the GCLK frequency is fixed, the minimum and maximum brightness ranges are locked. To increase brightness, GCC must be raised, which increases low-gray brightness and power consumption. This limits contrast ratio and available dynamic range.
There is also a limitation in the visual refresh rate. Under pure PWM, the effective duty time of low gray levels is extremely short, and the refresh window cannot be further compressed. As a result, low-grayscale refresh rates remain very low—at 60 Hz input, 1 grayscale is only 60 Hz—making scanning lines easily visible to both the human eye and camera. This is the long-standing “low-gray low-refresh” issue criticized by the industry.
Facing these rigorous requirements for ultimate image quality, the industry urgently needs a smarter, more flexible driving method. The emergence of PWM+PAM hybrid driving quickly proved to be an inevitable solution with significant advantages.
3. Infinity: Deep Collaboration of Hybrid Driving, Algorithms, and Hardware
Improving LED image quality is a systematic engineering task that cannot be achieved by a single driving or display-control technology alone. The Infinity solution, based on hybrid PWM+PAM driving, achieves deep integration across driving ICs, intelligent algorithms, and display-control systems. These elements work together as a unified architecture, enabling optimal image performance with revolutionary results.
The first factor impacting visual perception is contrast, determined by the extremes between the brightest and darkest levels. Infinity enables brightness control through dual dimensions—pulse width and amplitude. In high-brightness areas, PWM provides the foundation while PAM boosts current amplitude, unlocking peak brightness with strong visual impact. In low-gray areas, PAM reduces current amplitude based on minimal pulse width, enabling deeper minimum luminance, widening contrast and dynamic range, and improving brightness precision.
With dynamic range expanded, generating more intermediate grayscale levels becomes key to detail performance. Infinity supports up to 16-bit PWM depth + 8-bit PAM depth, significantly increasing grayscale capacity and enabling delicate gradient transitions where highlights and shadows remain clearly defined.
Color accuracy is another highlight. LED spectral characteristics often shift under different current levels, causing color deviation. Infinity, through precise hybrid driving and MG algorithms, performs RGB step-level calibration to compensate spectral drift, keeping color difference ΔE below 2 (barely perceptible to the human eye) and color temperature deviation within ±100K (based on 6500K test). It also accurately reproduces international color gamuts, including sRGB, Rec.709, DCI-P3, and Rec.2020, ensuring faithful visual output for any content source.
In refresh performance, Infinity adjusts current amplitude dynamically at the pixel level, freeing more time for pulse cycles. This enables low-gray high-refresh output, with 1-grayscale refresh rate up to 4–8x higher than traditional PWM while maintaining low-gray visual quality.
For uniformity, Infinity uses full-grayscale calibration to ensure consistency across all grayscale levels. Considering long-term LED thermal attenuation, adaptive thermal compensation dynamically adjusts brightness and color using heat-distribution prediction models. This significantly reduces color instability caused by temperature changes, maintaining uniform performance in long-duration operation scenarios.
Based on hybrid PWM+PAM driving and deep integration of driving ICs, intelligent algorithms, and control systems, the Infinity solution enables MLED to achieve ultra-high image quality with natural color reproduction and lifelike visual realism.
4. Turning Technical Advantages Into Application Value
The true value of technology lies in real-world application benefits. Infinity stands out not by solving a single problem but by combining multiple features to meet demanding high-quality display requirements across diverse scenarios.
In XR stages and virtual filmmaking, camera-based capture of LED screens requires exceptional display quality. High refresh rate is fundamental, while high brightness restores light and shadow, high contrast enhances layering, and accurate colors prevent shifts on camera. Infinity delivers these strengths simultaneously—ensuring realism to the human eye and natural reproduction on camera—bringing immersive quality to film production.
In command centers, precise information representation is critical. Fine grayscale and high color accuracy ensure clear visibility of monitoring images and text, while long-term thermal compensation prevents color drift over time. Infinity is a strong fit for such high-reliability environments.
In premium commercial displays, users demand “beautiful, sharp, smooth.” Ultra-high dynamic range provides bright-dark separation, accurate color reproduces natural tones, high grayscale keeps details crisp, and high refresh delivers seamless motion. To viewers, the experience approaches natural human perception—allowing HDR content to fully shine.
In automotive displays and outdoor advertising, Infinity further offers efficiency and stability. Low power consumption prolongs service life and improves safety, reduced thermal output lowers cooling requirements, and high brightness with color accuracy remains reliable even under sunlight. Infinity delivers a more robust display performance for such environments.
5. Conclusion
The Infinity solution, built on PWM+PAM hybrid driving and powered by intelligent algorithms and deep system integration, breaks through a decade-old traditional LED driving architecture. It systematically resolves long-standing pain points, including insufficient grayscale, limited refresh rate, constrained dynamic range, color temperature drift, and uniformity instability.
Infinity also successfully transforms these breakthroughs into tangible user value: richer detail, more accurate color, more comfortable viewing, and improved energy efficiency. This marks not only a significant leap for MLED toward ultra-high image quality but also signals a new industry trend transitioning from traditional PWM to hybrid PWM+PAM driving.
Infinity is not just a technological upgrade—it is the direction of the industry’s future.
