VFDs (Vacuum Fluorescent Displays) are high contrast displays that can display 7-segment numerals, multi-segment alphanumeric characters or a dot matrix pattern. These display types are typically colored green, bright and perform well in both dark and full sunlight environments. VFDs use a self-emitting fluorescent light allowing them to operate in extreme cold and hot temperatures. VFDs are commonly used in consumer based electronics such as car radios, ovens and DVD/Blue-ray players.