| 摘要 |
The purpose of the present invention is to realize a data line driving circuit of an electro-optical device that is capable of preventing a display defect while suppressing the increase of electricity consumption even when display elements arranged in a matrix form are driven line-sequentially. In a data line driving circuit that supplies data signals Vx [1] to Vx [n] to each data line installed on a first column to an n^th column, unit circuits (Un+1) to (Un+3) of (n+1)^th to (n+3)^th tiers are installed on the subsequent tier of a unit circuit Un of an n^th tier of a shift register corresponding to the n^th column, and a start pulse (SP) transmitted to the n^th tier is further transmitted from the (n+1)^th tier to the (n+3)^th tier. By an OR gate (GT3), a latch pulse (LAT) with a pulse width wider than the pulse width of the start pulse (SP) is generated by performing the logical OR of the start pulse (SP) transmitted from the (n+1)^th tier to the (n+3)^th tier. The data signals Vx [1] to Vx [n] latched in a first latching circuit by a sampling signal are simultaneously latched in a second latching circuit by the latch pulse (LAT). |
