Patent ID: 9653013
Date: 2017-05-16
CPC Classifications: G09G

Claim:
1. A liquid crystal display device which enables to drive a liquid crystal display section in a first drive mode in which a writing period where a plurality of scan lines are sequentially selected, and a suspension period having a length of the writing period or more where all of the plurality of scan lines are in a non-selection state, alternately appear in a cycle of a first drive frame period which includes the writing period and the suspension period, the device comprising: the liquid crystal display section including a plurality of data lines, the plurality of scan lines, a plurality of pixel electrodes that are positioned in a matrix shape to correspond to the plurality of data lines and the plurality of scan lines, and a common electrode that is arranged to correspond to the plurality of pixel electrodes; a data line drive circuit that sends a data signal to the plurality of pixel electrodes through the plurality of data lines, and reverses polarity of the data signal for the each writing period; and a scan line drive circuit that drives the plurality of scan lines, wherein in the writing period, the data line drive circuit sets any one of a plurality of positive polarity gradation voltages, or any one of a plurality of negative polarity gradation voltages, as a voltage of the data signal, the plurality of positive polarity gradation voltages being associated with a polarity signal having a first value indicating a positive polarity for the writing period, the plurality of negative polarity gradation voltages being associated with a polarity signal having a second value indicating a negative polarity for the writing period, and in the suspension period, the data line drive circuit sets the voltage of the data signal, to an average value of a maximum gradation voltage among the plurality of positive polarity gradation voltages, a maximum gradation voltage among the plurality of negative polarity gradation voltages, a minimum gradation voltage among the plurality of positive polarity gradation voltages, and a minimum gradation voltage among the plurality of negative polarity gradation voltages, and the liquid crystal display section further includes a thin film transistor that includes a channel layer formed by an oxide semiconductor and that is connected to the pixel electrode and the data line corresponding to the pixel electrode.