Liquid crystal display and method of manufacturing the same and method of driving the same

A liquid crystal display comprising:

• a first substrate having a common electrode formed thereon;
• a second substrate opposed to said first substrate and having a plurality of pixel electrodes with high reflectance formed thereon;
• and
• a liquid crystal layer disposed between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode, and is covered by said common electrode;
• and
• wherein each of said pixel electrodes has a shape made of a link of a plurality of electrode portions each having approximately symmetrical shape.

A liquid crystal display comprising:

• a first substrate having a common electrode formed thereon;
• a second substrate opposed to said first substrate and having a plurality of pixel electrodes with high reflectance formed thereon;
• and
• a liquid crystal layer disposed between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode, and is covered by said common electrode;
• wherein each of said pixel electrodes has a shape made of a link of a plurality of electrode portions each having approximately symmetrical shape;
• and
• wherein said electrode portion of said pixel electrode has notches or protrusions which radially extend from the center of said approximately symmetrical shape.

A liquid crystal display comprising:

• a first substrate having a common electrode formed thereon;
• a second substrate opposed to said first substrate and having a plurality of pixel electrodes with high reflectance formed thereon;
• and
• a liquid crystal layer disposed between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode, and is covered by said common electrode;
• wherein each of said pixel electrodes has a shape made of a link of a plurality of electrode portions each having approximately symmetrical shape;
• and
• wherein said electrode portion of said pixel electrode has voids in which no electrode material exists and which radially extend from the center of said approximately symmetrical shape.

A liquid crystal display comprising:

• a first substrate having a common electrode formed thereon;
• a second substrate opposed to said first substrate and having a plurality of pixel electrodes with high reflectance formed thereon;
• and
• a liquid crystal layer disposed between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode, and is covered by said common electrode;
• wherein each of said pixel electrodes has a shape made of a link of a plurality of electrode portions each having approximately symmetrical shape;
• and
• wherein said electrode portion of said pixel electrode has concave portions which radially extend from the center of said approximately symmetrical shape.

A liquid crystal display comprising:

• a first substrate having a common electrode formed thereon;
• a second substrate opposed to said first substrate and having a plurality of pixel electrodes formed thereon;
• a liquid crystal layer disposed between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode, and is approximately covered by said common electrode;
• wherein each of said pixel electrodes has a shape made of a link of a plurality of sub-pixels made of electrode portions each having approximately symmetrical shape;
• in said plurality of sub-pixels, there exist a plurality of minute areas having different directions of rising up of liquid crystal molecules, and electrode of each of said sub-pixels has a smaller area than that of said common electrode, and is approximately covered by said common electrode;
• wherein an electrode portion of at least one of said sub-pixels has high reflectance;
• and
• wherein said liquid crystal layer comprises liquid crystal material having negative anisotropy of permittivity, and liquid crystal molecules of said liquid crystal material align approximately perpendicular to the surfaces of said first and second substrates when no voltage is applied thereto.

A method of driving a liquid crystal display comprising the steps of:

• driving a first substrate having a common electrode;
• driving a second substrate opposed to said first substrate and having a plurality high-reflectance of pixel electrodes formed thereon for drive voltages having opposite polarity applied to adjacent pixels;
• and
• disposing a liquid crystal layer between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode and is covered by said common electrode, and each of said pixel electrodes comprises an electrode portion having an approximately symmetrical shape,
• wherein each of said pixel electrodes is formed as a link of a plurality of electrode areas each having an approximately symmetrical shape.

A method of driving a liquid crystal display, the method comprising the steps of:

• driving a first substrate having a common electrode formed thereon;
• driving a second substrate opposed to said first substrate and having a plurality of high-reflectance metal pixel electrodes formed thereon;
• and
• providing a liquid crystal layer disposed between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode, is covered by said common electrode, comprises an electrode portion having approximately the symmetrical shape, and is formed as a link of a plurality of electrode areas each having approximately symmetrical shape;
• wherein a display condition is returned to a black display condition before an end of a frame.

A method of driving a liquid crystal display, the method comprising the steps of:

• driving a first substrate having a common electrode formed thereon;
• driving a second substrate opposed to said first substrate and having a plurality of high-reflectance metal pixel electrodes formed thereon;
• and
• providing a liquid crystal layer disposed between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode, is covered by said common electrode, comprises an electrode portion having approximately the symmetrical shape, and is formed as a link of a plurality of electrode areas each having approximately symmetrical shape;
• wherein the drive voltages are near a threshold voltage of liquid crystal molecules and are applied before starting a frame.

A method of driving a liquid crystal display, the method comprising the steps of:

• driving a first substrate having a common electrode formed thereon;
• driving a second substrate opposed to said first substrate and having a plurality of high-reflectance metal pixel electrodes formed thereon;
• and
• providing a liquid crystal layer disposed between said first and second substrates;
• wherein each of said pixel electrodes has a smaller area than that of said common electrode and is covered by said common electrode, and each of said pixel electrode comprises an electrode portion having approximately symmetrical shape;
• wherein the liquid crystal display further comprises a light shield layer provided at a portion of each pixel in which leakage of light occurs when the drive voltages are near the applied threshold voltage of liquid crystal molecules.