LED bars and arrays are systems of LEDs (Light Emitting Diodes) that are typically used for backlighting, architectural lighting, and display lighting. They are most commonly used for lighting displays and for adding brightness to a room or space. LED bars and arrays have advantages over traditional light sources such as fluorescent, incandescent, and halogen lighting in that they are more durable and require significantly less energy. LED bars and arrays are available in a variety of sizes, shapes, and colors, making them a popular choice for architectural and display lighting. They also have a much longer lifespan than traditional light sources and are generally less expensive.