Abstract: Disclosed is a flat panel display capable of enhancing a white balance by making a doping concentration or shape and size of drain offset regions of driving transistors different, in R, G and B unit pixels of each pixel. A flat panel display, comprises a plurality of pixels, where each of pixels including R, G and B unit pixels to embody red (R), green (G) and blue (B) colors, respectively. Each of the unit pixels includes a transistor with source/drain regions. Transistors of at least two unit pixels of the R, G and B unit pixels have drain regions of different geometric structures. In each unit pixel, a resistance value of the drain region of the transistor to drive a light-emitting device having the highest luminous efficiency among the transistors is higher than that of the drain region of a transistor to drive the light-emitting device having a relatively low luminous efficiency.

Abstract: The present invention discloses a flat panel display capable of improving a white balance by using offset lengths or doping concentrations of offset regions between multi gates of driving transistors in R, G, and B unit pixels. The flat panel display comprises a plurality of pixels, where each of the pixels includes R, G and B unit pixels to embody red (R), green (G) and blue (B) colors, respectively, and each of the unit pixels including a transistor with multi gates. Transistors of at least two unit pixels of the R, G, and B unit pixels have offset regions with different geometric structures between the multi gates from one another. An offset region of a transistor for driving a light-emitting device having the highest luminous efficiency among the transistors of the R, G, and B unit pixels, is formed to have a longer offset length or a lower doping concentration, than those of offset regions of transistors for driving light-emitting devices having relative lower luminous efficiency.

Abstract: A flat panel display capable of lowering an on-current of a driving thin film transistor (TFT), maintaining high switching properties of a switching TFT, maintaining uniform brightness using the driving TFT, and maintaining a life span of a light emitting device while the same voltages are applied to the switching TFT and the driving TFT without changing a size of an active layer. The flat panel display includes a light emitting device, a switching thin film transistor including a semiconductor active layer having a channel area for transferring a data signal to the light emitting device, and a driving thin film transistor including a semiconductor active layer having a channel area for driving the light emitting device. A predetermined amount of current flows through the light emitting device according to the data signal.