Method for driving liquid crystal display device

摘要

The liquid crystal display device includes a first substrate provided with a terminal portion, a switching transistor, a driver circuit portion, and a pixel circuit portion including a pixel transistor and a plurality of pixels, a second substrate provided with a common electrode electrically connected to the terminal portion through the switching transistor, and liquid crystal between a pixel electrode and the common electrode. In a period during which a still image is switched to a moving image, the following steps are sequentially performed: a first step of supplying the common potential to the common electrode; a second step of supplying a power supply voltage to the driver circuit portion; a third step of supplying a clock signal to the driver circuit portion; and a fourth step of supplying a start pulse signal to the driver circuit portion.

主权项

1. A driving method of a display device which comprises:
a display panel comprising a pixel circuit portion, the pixel circuit portion comprising a pixel electrode and a transistor electrically connected to the pixel electrode, wherein the transistor comprises an oxide semiconductor layer including a channel formation region; and a touch panel superimposed on the display panel, the driving method comprising: displaying a moving image in a first period at a first refresh rate; and displaying a still image in a second period at a second refresh rate which is smaller than the first refresh rate, wherein an off current per micrometer in a channel width of the transistor is less than or equal to 1×10−17 A/μm.