In this transcript from Display Week 2025, Jeff Yurek, Head of Marketing at Nanosys, highlights the performance advantages of Quantum Dot (QD) technology over traditional KSF phosphor displays, particularly for monitors and notebooks.
Here are the key takeaways:
1. Speed and Response Time
- Nano-second Response: Quantum dots have a response time of less than 100 nanoseconds, whereas KSF phosphor is significantly slower, responding at approximately 8.3 milliseconds.
- Visual Artifacts: Because KSF phosphor is slow to turn off, it creates a “red tail” or bleed on fast-moving objects. In contrast, QD displays provide sharp turn-on/off times, which is essential for high refresh rate displays (120Hz to 240Hz).
- Color Uniformity: In miniLED displays, KSF can cause a temporary blue/cyan tint on white objects because the red phosphor takes time to “warm up,” while QDs produce pure white instantly.
2. “Gamut Rings” – A New Performance Metric
- Nanosys introduced Gamut Rings to better measure color volume across different brightness levels.
- While a QD-OLED and a White OLED may have similar peak brightness and resolution, the QD-OLED maintains 98% color coverage throughout the entire luminance range. The White OLED’s color coverage can drop to roughly 52% as it gets brighter, losing vibrancy in the highlights.
3. Real-World Efficiency (MacBook Pro)
Yurek notes that QD miniLED systems now rival the image quality of top-tier Tandem OLED displays (like those in the iPad Pro).
