Patent ID: 8878769
Filing Date: 2014-11-04
Classification: G09G

Abstract:
1. An electrophoretic display apparatus comprising: a display unit including: a scanning signal voltage application circuit configured to apply the scanning signal voltage to the scanning line; a data signal voltage application circuit configured to apply the data signal voltage to the signal line; and a common voltage application circuit configured to apply a common voltage to the second electrode, wherein the data signal voltage includes: (i) a pre-write signal voltage which alternately repeats a positive voltage with respect to the common voltage and a negative voltage with respect to the common voltage, (ii) a write signal voltage to display an image on the display unit, (iii) a post-write signal voltage which gradually decreases from the write signal voltage to a hold signal voltage, the hold signal voltage maintaining a display state of the display unit, and (iv) the hold signal voltage, wherein the data signal voltage application circuit applies the pre-write signal voltage during a prepulse operation period, applies the write signal voltage during a write operation period, applies the post-write signal voltage during a write end operation period, and applies the hold signal voltage during a hold operation period, and wherein the scanning signal voltage application circuit sequentially switches the scanning signal voltage to the scanning line from a gate off level voltage to a gate on level voltage for one horizontal period during the write operation period and the write-end operation period, and applies the gate off level scanning signal voltage for turning off the thin film transistor to the scanning line during a period between (i) a transition of the data signal voltage to the hold signal voltage, and (ii) a next transition of the data signal voltage to the pre-write signal voltage, the gate off level scanning signal voltage being lower in potential than the hold signal voltage.