Patent ID: 7511688

Claim:
An electro-luminescence display device, comprising: a gamma generator to output a reference gamma voltage corresponding to a control data supplied from the outside; and at least one data integrated circuit to receive a data from the outside and to generate a data signal corresponding to the bit number of the data in use of the reference gamma voltage, wherein the gamma generator includes a red gamma part to generate a red reference gamma voltage so that the data signal to be supplied to a red cell can be generated, a green gamma part to generate a green reference gamma voltage so that the data signal to be supplied to a green cell can be generated, and a blue gamma part to generate a blue reference gamma voltage so that the data signal to be supplied to a blue cell can be generated, and wherein each of the red gamma part, the green gamma part and the blue gamma part includes a first resist part and a second resist part to divide the voltage of a supply voltage source, a first analog digital converter to divide the divided voltage supplied from the first resist part into a plurality of voltage levels, a second analog digital converter to divide the divided voltage supplied from the second resist part into a plurality of voltage levels and a register to supply a first control data so that any one voltage can be outputted in the first analog digital converter, as well as to supply a second control data to that any one voltage can be outputted in the second analog digital converter.