Patent ID: 7332263
Filing Date: 2008-02-19
Classification: H01L,Y10S

Abstract:
1. A method for patterning a passive matrix organic light emitting diode device having a multilayered structure, said method comprising: providing a substrate having a multilayered structure formed thereon, said multilayered structure comprising an anode layer formed on the substrate, at least one light emitting organic layer formed on the anode layer, and a cathode layer formed on said at least one light emitting organic layer; irradiating areas of the cathode layer in a predetermined pattern using a laser beam having a pulse width in a nanosecond or a picosecond range and an energy density exceeding the ablation threshold of the cathode layer to thereby cause ablation of the multilayered structure in the irradiated areas; wherein, the anode layer, the cathode layer and the at least one light emitting organic layer are patterned substantially simultaneously during the same irradiation operation.