In a world driven by high impact visuals, achieving exceptional image quality is a constant pursuit. From TVs to industrial monitors, users want vivid colours, deep contrast, and lifelike clarity.
Helping manufacturers meet these demands is Quantum Dot Enhancement Film (QDEF) - a transformative layer that can be added to display stacks to dramatically enhance colour reproduction and contrast. But what exactly is it, and how does it work?
Quantum Dot Film (QD-Film) is a backlight-enhancing layer used in LCD displays to significantly improve colour performance and energy efficiency.
It contains tiny semiconductor particles, just a few nanometres in size - that absorbs short wavelengths of light and re-emits them in longer wavelengths to produce precise colours of light depending on the size of the nano particles.
When exposed to blue light, quantum dots re-emit some of that energy as pure red or green light. By mixing this with the remaining blue light, the display produces a high-quality white light, which forms the foundation for vivid colour reproduction on the screen.
Quantum Dot Film is typically positioned between the light guide plate (LGP) and the diffuser layer in a TFT display. Here's how it works step-by-step:
Unlike traditional phosphor-based systems that rely on filtering light (and losing efficiency in the process), QDF converts light to specific wavelengths, enhancing colour output and brightness without additional energy consumption.
Now pair that enhanced colour with state-of-the-art backlighting: Mini-LED and Full Array Local Dimming (FALD).
Mini-LEDs are much smaller than traditional LEDs, allowing engineers to place hundreds or thousands of dimmable zones directly behind the panel. With FALD, each zone can be controlled individually to improve image contrast, reduce backlight bleed, and boost detail in both dark and bright scenes.
Why This Combination Matters:
Together, they create a display that is sharper, richer, and more immersive - perfect for sectors where screen performance is critical, from high-end medical monitors to automotive infotainment and industrial control systems.
Combining QD Film with Mini-LED FALD enables displays that offer:
Whether you're designing a next-gen user interface for a medical device, a rugged display for industrial control, or an in-vehicle entertainment system, this trio of technologies offers a reliable path to visual excellence.
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