PULSE OUTPUT CIRCUIT, SHIFT REGISTER, AND DISPLAY DEVICE

摘要

PURPOSE: Pulse output circuit, shift register, and display device are provided to realize a pulse output circuit which is formed by using only TFTs of one polarity, which is fabricated at a low cost by performing a reduced number of manufacturing steps. CONSTITUTION: A source signal line driver circuit(1201), a gate signal line driver circuit(1202), and a pixel portion(1203) are formed integrally with each other on a substrate(1200). A section of the pixel portion(1203) shown in a frame(1210) indicated by the dotted line is a segment for forming one pixel. The example of the pixel is a pixel of a liquid crystal display device. ON/OFF control of each pixel is performed by using one TFT in the pixel when charge is applied to one electrode of the liquid crystal device. Signals for driving the source signal line driver circuit(1201) and the gate signal line driver circuit(1202) are externally supplied via a flexible printed circuit(FPC)(1204).