In this in-depth technical dialogue, Chris Chinnock and Jeff Yurek break down the innovative—and sometimes confusing—display prototypes Hisense showcased at CES. The conversation centers on the industry’s move beyond standard RGB (Red, Green, Blue) systems to achieve better color performance and health benefits.

1. The “Sky Blue” Health Strategy

Hisense’s first major reveal was an LCD display featuring a unique mini-LED backlight.

• Cyan Primary: By adding a cyan element to the backlight, the display can shift between different blue wavelengths.
• Health vs. Accuracy: The “sky blue” mode is designed to reduce eye strain by avoiding high-energy blue light. Meanwhile, a “deep blue” mode can be toggled for high-fidelity, color-critical viewing.
• The Challenge: Since video content is delivered as an RGB signal, the TV must use a complex algorithm to decide how to distribute that data across the new cyan and blue LEDs in real time.

2. Multi-Primary Micro-LEDs

The second prototype was a direct-view micro-LED display that introduced a yellow micro-LED.

• Historical Context: This approach mirrors Sharp’s “Quattron” technology from years ago, which added a yellow sub-pixel to LCDs to improve the reproduction of golds and brassy tones.
• Questionable Necessity: Jeff Yurek notes that while yellow was helpful for dim LCDs, micro-LEDs are already incredibly bright and saturated. The benefit here is likely a marginal “bump” in specific saturated colors rather than a massive leap in efficiency.

3. The Math of Color: Area vs. Coverage

A significant portion of the talk addresses the marketing behind BT 2020, the current gold standard for Wide Color Gamut (WCG).

• Marketing “Truths”: Brands often claim “100% BT 2020” because the total area of their color triangle matches the standard.
• Coverage Gaps: However, if the “points” of that triangle don’t align perfectly with the standard’s coordinates, the coverage is actually much lower.
• The Laser Requirement: The experts agree that because BT 2020 primaries are pure monochromatic light on the CIE spectral locus, only laser-based systems can truly achieve 100% coverage. LEDs and OLEDs simply have too much spectral “width” or crosstalk.

4. Implementation Hurdles

The discussion concludes by highlighting the “bottleneck” of these innovations: Signal Processing. * Crosstalk: In LCDs, light from a cyan or yellow backlight can “leak” through the wrong color filters (e.g., green light leaking through a blue sub-pixel).

• Lack of Standards: There is no industry-standard “RGB+Cyan” signal, so manufacturers must “guess” how to map colors using proprietary math, which can lead to unpredictable results in image quality.