RGBRGBW

RGBRGBW is a term used to describe a multi-channel LED array architecture in which red, green, blue and white LEDs are combined in a repeating pattern within a single module or segment. In commonly cited implementations, a segment contains two RGB subgroups followed by a white LED, yielding a channel sequence such as R-G-B-R-G-B-W. The purpose of this arrangement is to expand color rendering capabilities while providing a dedicated white channel for high-quality neutral light.

The electronics drive the individual LEDs with current-controlled, PWM-dimmed signals. Color mixing is achieved by adjusting the brightness of the red, green and blue subsegments, while the white channel can be used for bright white illumination or for tone balancing to improve perceived color accuracy. Because the white LED is decoupled from the RGB mix, the system can deliver consistent white light across color temperatures and can reduce color cross-talk at higher brightness levels.

Applications include architectural and event lighting, stage lighting, and LED strips where both vivid color effects and high-quality white illumination are desired. Some manufacturers promote RGBRGBW as providing wider color gamuts compared with simple RGBW configurations, though total efficiency and control complexity depend on driver design and LED binning.

Challenges include higher bill of materials, more complex calibration and quality control, and potential non-uniformity across segments if not carefully driven and manufactured. See also RGB, RGBW, and LED lighting systems.