An electronic device may include an organic light emitting display (OLED), a heat generating device, and a heat spreading device. The heat generating device may provide heat directly to the heat spreading device, and the heat spreading device is to dissipate the heat from the heat generating device and evenly heat the OLED and lower a driving voltage of the OLED to reduce power consumption of the OLED.

Embodiments of the present invention generally relate to a tubular lamp with a coiled filament having an overwind wrapped around the coil. In one embodiment, the tubular lamp has a coiled coil filament, and the coiled coil has an overwind wrapped around the coiled coil.

Embodiments of the present invention generally relate to a tubular lamp with a coiled filament having an overwind wrapped around the coil. In one embodiment, the tubular lamp has a coiled coil filament, and the coiled coil has an overwind wrapped around the coiled coil.