Patent ID: 7091936

Claim:
A color display device in which display pixels for indicating different colors are provided in plural numbers for each color and arranged in a matrix, said color display device comprising, corresponding to each display pixel: a self-emissive element for emitting light of a predetermined color; a driving thin film transistor (TFT) having a first end electrical communication with said self-emissive element for supplying a drive current to said self-emissive element and a second end in electrical communication with a power source with a constant voltage; and a switching TFT having a first end in electrical communication with a data line and a second end in electrical communication with a gate of said driving TFT, said switching TFT controls whether a data signal from said data line is supplied to said gate of said driving TFT; wherein size of said driving TFT in a display pixel for one color is altered from that in a display pixel for another color; wherein size of a driving TFT connected to self-emissive element having a high emissive efficiency is set smaller compared to said size of a driving TFT connected to a self-emissive element having a low emissive efficiency.