Patent ID: 7663589

Claim:
An electro-luminescence display device, comprising: an electro-luminescence cell connected between a first supply voltage source and a ground voltage source to emit light by a current supplied from the first supply voltage source; a cell driver formed every intersection of gate lines and data lines and comprising a driving thin film transistor connected between the first supply voltage source and the electro-luminescence cell to control a current flowing in the pixel cell; and a pulse supplier to supply to the electro-luminescence cell a pulse amplitude modulation signal which is divided to have N (N is a natural number) numbers of different voltage levels from each other and connected between a cathode of the electro-luminescence cell and the ground voltage source, wherein the driving thin film transistor operates at the non-saturation region, wherein each of the N numbers of pulse amplitude modulation signals has a read section of a first voltage level and a write section having different voltage levels between the voltage level of the read section and a ground voltage from the ground voltage source.