Light emitting diodes (LEDs) are quickly becoming the gold standard for business signs that need illumination. These light sources come in thin polymer sleeves and are easier to handle than the more fragile neon tubes. The latter feature vacuum tubes filled with the gas that becomes part of an electrical circuit to create light. The technology has been in use for sign lighting since the early 20th century. Why do business owners now clamor for LED lighting in illuminated signs in DFW?