Driving method of active matrix display device

A method for driving an active matrix display device of an in-plane switching mode comprising:

• applying a potential Vp to a data line Pm for a pixel electrode;
• applying a potential VH to a common line Yn;
• changing said potential VH for said common line Yn to a standard voltage Vc before a first selection pulse VX for a first field is applied to a scan line Xn corresponding to said data line Pm and said common line Yn;
• and
• changing said potential Vc for said common line Yn to a potential VL at the same time when the first selection pulse VX to said scan line Xn,
• wherein said potential Vp to said data line Pm satisfies a condition VL≦Vp≦VH.

A method for driving an in-plane switching mode active matrix display device comprising a pixel portion having a plurality of scan lines, a plurality of data lines, a plurality of common lines, a plurality of switching elements for switching pixel electrodes over a substrate, said method comprising:

• applying a potential Vp to a data line Pm for a pixel electrode;
• applying a potential VY to a common line Yn;
• and
• inverting said potential VY for said common line Yn before or at the same time when a first selection pulse VX for a fist field is applied to a scan line Xn corresponding to said data line Pm and said common line Yn,
• wherein a value of said potential VY for said common line Yn equals a potential (Voffset+Vamp) or −Voffset, wherein said Vamp is a potential of an image information, and
• wherein said potential Vp to said data line Pm satisfies a condition VL≦Vp≦VH.

A method for driving an active matrix display device comprising:

• applying a potential Vp to a data line Pm connected to a source of a pixel thin film transistor over a substrate;
• applying a potential VH to a common line Yn over said substrate;
• and
• changing said potential VH of said common line Yn to a potential VL before or at the same time when a first selection pulse VX for a first field is applied to a scan line Xn connected to a gate of said pixel thin film transistor,
• wherein each of said potentials VH and VL applied to said common line Yn is different from a standard voltage Vc, and
• wherein said potential Vp to said data line Pm satisfies a condition VL≦Vp≦VH.

A method for driving an active matrix display device comprising:

• applying a potential Vp to a data line Pm connected to a source of a pixel thin film transistor over a substrate;
• applying a potential VH to a common line Yn over said substrate;
• changing said potential VH of said common line Yn to a standard voltage Vc before a first selection pulse VX for a first field is applied to a scan line Xn connected to a gate of said pixel thin film transistor;
• and
• changing said potential Vc of said common line Yn to a potential VL at the same time when the first selection pulse VX to said scan line Xn,
• wherein said potential Vp to said data line Pm satisfies a condition VL≦Vp≦VH.

A method for driving an active matrix display device of an in-plane switching mode comprising the steps of:

• applying a potential Vp to a data line Pm for a pixel electrode;
• applying a potential VY to a common line Yn;
• and
• changing said potential VY for said common line Yn to a potential VH or VL before or at the same time when a first selection pulse VX for a first field is applied to a scan line Xn corresponding to said data line Pm and said common line Yn,
• wherein said VH and VL are maximum and minimum potentials given to said common lines, respectively,
• wherein said potential Vp to said data line Pm satisfies a condition VL≦Vp≦VH.