Patent ID: 8669971
Filing Date: 2014-03-11
Classification: G02F,G09G,H01L

Abstract:
1. A display device comprising: a switching element formed for each of a plurality of pixels; a gate line connected to the switching element; and a scanning line drive circuit connected to the gate line, wherein the scanning line drive circuit includes scanning line drive circuit units of a plurality of stages, the scanning line drive circuit unit includes a first transistor and a second transistor, one of source and drain of the first transistor being connected to the gate line, an output signal of the scanning line drive circuit unit provided at a previous stage being input to one of source and drain of the second transistor, the other of the source and drain of the second transistor being connected to a gate of the first transistor, and a magnitude of a size ratio obtained by dividing a channel width of the second transistor by a channel length of the second transistor is in a range from 20% to 25% of a magnitude of a size ratio obtained by dividing a channel width of the first transistor by a channel length of the first transistor, wherein an upper limit of an operating frequency of the scanning line drive circuit is in a range from 29.5 kHz to 30 kHz.