A “Chip on Board” light emitting diode represents a specific packaging technology for LED arrays. Instead of mounting individual LEDs onto a circuit board, multiple LED chips are bonded directly to a substrate, typically ceramic or metal. This configuration results in a single light source that appears as one uniform panel, rather than a collection of individual points of light. For example, a high-powered flashlight might utilize this technology to produce a bright, consistent beam.
This approach offers several advantages, including improved thermal performance due to the direct bonding to the substrate, allowing for higher power operation and increased lifespan. The unified light output also allows for simpler optics design and produces a more aesthetically pleasing illumination. Historically, it emerged as a method to achieve higher light output and improved efficiency compared to earlier LED packaging techniques, paving the way for use in applications requiring strong and consistent lighting.