Patent ID: 8546822

Claim:
A backlight film, comprising: a flexible substrate; a plurality of polymer light emitting diodes each including a first electrode formed on the flexible substrate, a polymeric light emitting layer formed on the first electrode and a second electrode formed on the polymeric light emitting layer, the polymer light emitting diodes arranged in an array; a first electrode circuit formed on the flexible substrate, one end of each of the first electrodes connected to the first electrode circuit, and the first electrodes being powered by the first electrode circuit, the first electrode circuit and the first electrodes cooperatively forming a comb-shaped first electrode layer; an insulating layer formed among the first electrodes and the polymeric light emitting layers of the polymer light emitting diodes, a thickness of the insulating layer being equal to or less than a sum of that of the first electrode and that of the polymeric light emitting layer; a second electrode circuit formed on the insulating layer, one end of each of the second electrodes connected to the second electrode circuit, and the second electrodes being powered by the second electrode circuit, the second electrode circuit and the second electrodes cooperatively forming a comb-shaped second electrode layer, the first electrodes and the second electrodes configured for cooperatively activating the polymeric light emitting layer; and a protection layer covering the flexible substrate, the protection layer and the flexible substrate sandwiching the polymer light emitting diodes, the first electrode circuit, the insulating layer, and the second electrode circuit therebetween.