KORRUS / DOC-02 · DISPLAY TECH
Display Tech
Korrus display technologies for circadian entrainment
A hardware-level platform that gives any LCD display the ability to dynamically tune its biological impact, without compromising the visual experience.
IP Origin
From foundational LED science to circadian display
The Korrus spectral engineering platform builds on foundational LED science with deep roots in Soraa, where Nobel laureate Dr. Shuji Nakamura's work on gallium nitride and the blue LED established the technical DNA Korrus extends today into a deep portfolio of spectral engineering, phosphor design, and circadian-tuned product IP spanning lighting and displays.
Architecture
How it works: the 2-channel backlight
Korrus replaces the conventional single-spectrum backlight with a 2-channel LED architecture. Each channel is spectrally engineered: one optimized for daytime biological stimulation, one for circadian safety in the evening. A real-time spectral engine blends the two dynamically, driven by time of day or user preference. The LCD panel itself requires no modification.
Channel 1 · Daytime
Full-spectrum backlight with elevated melanopic content. Tuned to support alertness, mood, and circadian entrainment during working hours.
Channel 2 · Evening
Spectrally engineered to minimize melanopic stimulation while preserving the same D65 white point and color gamut. Melatonin can rise naturally.
LCD Panel · Unchanged
Standard LCD panel. Same supply chain, same manufacturing process, same cost structure. The circadian capability lives entirely in the backlight.
The Backlight LEDs
ZEROBLUE and MAXBLUE
The two channels are realized by two purpose-engineered Korrus LEDs in matched edge-lit packages. They share white point and color gamut, so the visual output is indistinguishable across modes. Their spectral structure is engineered for opposite biological intent.
Daytime
MAXBLUE
High-melanopic alertness backlight. Elevated short-wavelength output in the 440–495 nm band drives circadian entrainment and supports focus and alertness during active hours.
Evening
ZEROBLUE
Circadian-safe evening backlight. The 440–495 nm melanopic band is suppressed while full-gamut color is preserved, reducing sleep-disruptive impact without amber tinting or image degradation.
Why this is technically credible
Most LED suppliers bin only on chromaticity. Korrus LEDs are binned on three axes: chromaticity, melanopic DER, and forward voltage. The circadian signal becomes a first-class, lot-controlled product specification, not a marketing claim. Melanopic DER is referenced to CIE S 026, and spectral stability is held within tight bounds over the qualification interval.
Full SPDs, melanopic EDI values, and bin definitions are available to qualified partners.
Front-of-Screen Performance
Circadian capability with no visual compromise
Both modes maintain the same D65 white point and the same color gamut. There is no amber tint, no contrast loss, no resolution penalty, no refresh-rate impact. The user-facing visual experience is indistinguishable between daytime and evening modes. What changes is what the eye reports to the brain.
Proof It Works
The technology is validated, not theoretical
Industrial Deployment
Dow Chemical Study
A controlled study with shift workers at a Dow Chemical facility used Korrus spectral technology to support circadian alignment under continuous-operations conditions. Full study design and results are available to qualified partners under NDA.
Headline finding to be published.
Independent Validation
Moore-Ede melatonin work on ZeroBlue
Independent research by Dr. Martin Moore-Ede and colleagues evaluating display backlights and their effect on melatonin and circadian biology.
Outcomes
What a circadian-aware display delivers
The biological case for Korrus technology is not abstract. It maps directly to outcomes that matter to users, IT buyers, and product teams.
Alertness
Sustained alertness during daytime work, with reduced afternoon fatigue. Driven by elevated melanopic input when biology expects it.
Performance
Better sleep architecture from reduced evening melanopic exposure translates into measurably better next-day cognitive performance.
Myopia (research)
Emerging research suggests display spectral content may interact with myopia progression in younger users. Korrus is engaged with this research area as evidence develops.
Comparison
How Korrus compares to other approaches
Display makers and software vendors have proposed several approaches to address circadian display effects. Most operate downstream of the actual biological signal.
Software night modes / CCT shift
Operate by remapping the color output of the panel. Reduce blue at the cost of amber-tinted, color-degraded images. Cannot independently control melanopic content of the underlying backlight, so the melanopic reduction is limited and comes paired with visual compromise.
Blue-light-blocking films / glasses
Apply a fixed-spectrum filter in front of the eye or screen. Always-on, time-of-day-blind, and visually warm. Useful for some users at some times but cannot deliver high melanopic signal during the day when biology benefits from it.
Lower display brightness
Reduces total light output but does not change the spectral structure. Reduces visibility before it meaningfully reduces melanopic dose, and only in evening conditions.
Korrus 2-channel backlight
Controls the spectrum at the LED level. Independently tunes melanopic signal across day and night without changing the color signal at the panel. Visual experience is identical across modes; the biological signal is the only thing that changes.
The Vision
Every display will eventually address human biology
NOW
2-Channel Backlight + LCD
Production-ready. Drop-in integration with standard LCD panels. Proven spectral performance.
NEXT
Multi-Channel + Mini-LED
Higher-resolution spectral control across the BLU. Expanded DCI-P3 / Rec. 2020 coverage with independent circadian tuning, compatible with mini-LED zone counts and local-dimming pipelines.
FUTURE
Emissive: OLED & MicroLED
Spectral control at the subpixel level for OLED and microLED. A circadian-aware multiprimary emissive stack is in active research, addressing premium-tier products where edge-lit LCD is not the substrate.
Let's talk
Interested in Korrus circadian display technology for your product roadmap? Request access and we'll be in touch.
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