An oblong sized printed circuit board (1) comprises light emitting diode circuitry (2, 3). Parts of the printed circuit board (1) are flexible in at least one direction, to improve a manufacturing efficiency. Preferably, the printed circuit board (1) can make curves in length and width directions and does not require holes for screws. The light emitting diode circuitry (2, 3) may comprise light emitting diode circuits (2) with light emitting diodes and other circuitry (3) such as a driver for driving light emitting diode circuits (2) individually for providing ambient light for a display (5). A device (100) comprising the printed circuit board (1) may further comprise the display (5). Such a device (100) is for example a television receiver/display device/screen device. The printed circuit board (1) may be attached to structures (61, 62) moveable by hand/machine for directing the ambient light. The device (100) may be a roll (101) for rolling up the printed circuit board (1).