Setting a common electrode and auxiliary electrode of an image display apparatus to different electric potentials

An image display apparatus comprising:

• a pixel electrode;
• a common electrode;
• a switching element to control supply of an electric potential to the pixel electrode;
• an auxiliary electrode forming an auxiliary capacitance between a portion of the auxiliary electrode and a portion of the pixel electrode,
• the common electrode adapted to be set at a first electric potential, and
• the auxiliary electrode adapted to be set at a second, different electric potential;
• and
• a short-circuit detector to detect a source of a short circuit,
• wherein the short-circuit detector is adapted to produce a first current in response to a short circuit at a first source and to produce a second;
• different current in response to a short circuit at a second source.

An image display apparatus comprising:

• a pixel electrode;
• a common electrode;
• a switching element to control supply of an electric potential to the pixel electrode;
• an auxiliary electrode forming an auxiliary capacitance between a portion of the auxiliary electrode and a portion of the pixel electrode,
• the common electrode adapted to be set at a first electric potential, and
• the auxiliary electrode adapted to be set at a second, different electric potential;
• and
• a signal line, the switching element connected between the signal line and the pixel electrode,
• wherein an absolute value of a difference value between the second electric potential of the auxiliary electrode and a center electric potential of the signal line is less than an absolute value of a difference value between the center electric potential of the signal line and the first electric potential of the common electrode.

An in-plane switching image display apparatus that comprises an array substrate, and a pixel electrode and a common electrode corresponding to a display pixel on the array substrate, the image display apparatus to display an image by controlling the electric potential of said pixel electrode to produce an electric field parallel to a surface of said array substrate, said array substrate comprising:

• a switching element to control the electric potential supplied to said pixel electrode;
• an auxiliary electrode that forms an auxiliary capacitance between itself and at least a part of said pixel electrode;
• a scanning line to control a drive state of said switching element;
• a signal line that has a changing electric potential in relation to a prescribed center electric potential, the signal line to supply the electric potential to said pixel electrode via said switching element;
• a common electrode electric potential supplying section to supply an electric potential different from said center electric potential to said common electrode;
• and
• an auxiliary electrode electric potential supplying section to supply an electric potential to said auxiliary electrode such that an absolute value of a difference value from said center electric potential of said signal line is smaller than an absolute value of a difference value between the center electric potential of said signal line and the electric potential supplied by said common electrode electric potential supplying section.

An in-plane switching image display apparatus that comprises an array substrate and a pixel electrode and a common electrode corresponding to a display pixel on the array substrate, the image display apparatus to display an image by controlling the electric potential of said pixel electrode to produce an electric field parallel to a surface of said array substrate, said array substrate comprising:

• a switching element to control the electric potential supplied to said pixel electrode;
• a scanning line to control a drive state of said switching element;
• a signal line to supply an electric potential via said switching element to said pixel electrode;
• a common electrode electric potential supplying section to supply an electric potential to said common electrode,
• an auxiliary electrode that forms auxiliary capacitance between itself and at least a part of said pixel electrode;
• an auxiliary electrode electric potential supplying section to supply an electric potential to said auxiliary electrode;
• a first switching section;
• a shunt line connected to said scanning line via the first switching section whose on/off state is controlled based on an electric potential difference between the shunt line and the scanning line;
• a second switching section deployed between said common electrode and said auxiliary electrode that controls a conduction state between said common electrode and said auxiliary electrode;
• and
• a third switching section deployed between said common electrode and said shunt line that controls the conduction state between said common electrode and said shunt line and has electrical properties different from those of said second switching section.

A method for use with an image display apparatus having a pixel electrode, a common electrode, and an auxiliary electrode forming an auxiliary capacitance between a portion of the auxiliary electrode and a portion of the pixel electrode, the pixel electrode, common electrode, and auxiliary electrode formed on an array substrate, the method comprising:

• controlling supply of an electric potential to the pixel electrode on the array substrate with a switching element;
• setting the common electrode on the array substrate at a first electric potential;
• and
• setting the auxiliary electrode on the array substrate at a second, different electric potential.