Patent ID: 8013816

Claim:
A light emitting display comprising: a display area including a plurality of scan lines for transmitting selection signals, a plurality of data lines for transmitting data signals, and a plurality of pixels arranged in a matrix format and coupled to the scan lines and the data lines, the display area being on a substrate; a scan driver for generating the selection signals and for applying the selection signals to the scan lines, the scan driver being on the substrate; and a data driver for generating the data signals and for applying the data signals to the data lines, the data driver being on the substrate, wherein the data driver comprises: a shift register for generating shift signals shifted to sequentially have a first level and for outputting the shift signals through a plurality of output terminals; a plurality of test pads, each test pad of the plurality of test pads coupled to a corresponding output terminal of the plurality of output terminals of the shift register; a demultiplexer for selectively applying the data signals input through a plurality of data buses to the data lines in response to the first level of the shift signals; and a buffer coupled between the output terminals of the shift register and the test pads, the buffer being for buffering the shift signals sequentially having the first level, wherein the buffer comprises a plurality of buffering circuits, and wherein each of the plurality of buffering circuits is for outputting a first power voltage level when at least one of the shift signals input to the buffer is at the first level and for outputting a second power voltage level when the at least one of the shift signals is at a second level, and wherein at least one of the test pads is coupled to an output terminal of at least one of the buffering circuits, and arranged between an area of the substrate in which the at least one of the buffering circuits is arranged and another area of the substrate in which a neighboring one of the buffering circuits is arranged.