Liquid crystal display device, driving circuit, driving method, and electronic devices

A liquid crystal display device, comprising:

• a scanning line which becomes an on-voltage at every predetermined interval;
• a liquid crystal capacitor having a liquid crystal sandwiched between a counter electrode and a pixel electrode;
• a data line which becomes a voltage corresponding to a density on the basis of the voltage of said counter electrode and to a writing polarity of said liquid crystal capacitor when said scanning line is the on-voltage;
• a first switching element inserted between said data line and said pixel electrode, said first switching element being turned on when the on-voltage is applied to said scanning line, and being turned off when an off-voltage is applied;
• a storage capacitor having one terminal connected to said pixel electrode and other terminal, such that, when the voltage of said data line corresponds to a positive-polarity writing during the period when the other terminal is the on-voltage, the voltage of the other terminal is shifted to high after said scanning line turns off, and when the voltage of said data line corresponds to a negative-polarity writing during the period when the other terminal is the on-voltage, the voltage of the other terminal is shifted to low after said scanning line turns off;
• a low-level capacitor line which is maintained at a predetermined first voltage;
• a high-level capacitor line which is maintained at a second voltage that is higher than said first voltage;
• and
• a selector which selects either one of said low-level capacitor line and said high-level capacitor line depending on the voltage of a selection signal line, and applies the voltage to the other terminal of said storage capacitor.

A driving circuit for a liquid crystal display device, the liquid crystal display device including:

• a liquid crystal capacitor arranged at the intersection of a scanning line and a data line, and having a liquid crystal sandwiched between a counter electrode and pixel electrode, the counter electrode being of a reference voltage that is unmodulated;
• a first switching element inserted between said data line and said pixel electrode, said first switching element being turned on when the on-voltage is applied to said scanning line, and being turned off when an off-voltage is applied;
• and a capacitor of which one terminal is connected to said pixel electrode, the driving circuit comprising:
• a scanning line driving circuit which turns said scanning line an on-voltage at every predetermined interval;
• a data line driving circuit which turns the voltage of said data line to a voltage corresponding to a density on the basis of the reference voltage of said counter electrode and to a writing polarity of said liquid crystal capacitor when said scanning line is on-voltage;
• and
• a storage capacitor driving circuit, such that, when the voltage of said data line corresponds to a positive-polarity writing during the period when said scanning line is the on-voltage, the voltage of the other terminal of said storage capacitor is shifted to high after said scanning line turns off, and when the voltage of said data line corresponds to a negative-polarity writing during the period when said scanning line is on-voltage, the voltage of the other terminal of said storage capacitor is shifted to low after said scanning line turns off the storage capacitor driving circuit including:
• a low-level capacitor line which is maintained at a predetermined first voltage;
• a high-level capacitor line which is maintained at a second voltage that is higher than said first voltage;
• and
• a selector which selects either one of said low-level capacitor line and said high-level capacitor line depending on the voltage of a selection signal line, and applies the voltage to the other terminal of said storage capacitor.

A driving method for a liquid crystal display device, the liquid crystal display device including:

• a liquid crystal capacitor arranged at the intersection of a scanning line and a data line, and having a liquid crystal sandwiched between a counter electrode and pixel electrode, the counter electrode being of a reference voltage that is unmodulated;
• a first switching element inserted between said data line and said pixel electrode, said first switching element being turned on when the on-voltage is applied to said scanning line, and being turned off when an off-voltage is applied;
• and a capacitor having one terminal connected to said pixel electrode and other terminal, the driving method comprising:
• turning a scanning line an on-voltage at every predetermined interval;
• turning a voltage of said data line to a voltage difference corresponding to a density on the basis of the reference voltage of said counter electrode and to a writing polarity of said liquid crystal capacitor when said scanning line is the on-voltage;
• shifting the voltage of the other terminal of said storage capacitor to high after said scanning line turns off when said data line corresponds to a positive-polarity writing during the period when said scanning line is the on-voltage, the high voltage being maintained by a high-level capacitor line;
• and
• shifting the voltage of the other terminal of said storage capacitor to low after said scanning line turns off when said data line corresponds to a negative-polarity writing during the period when said scanning line is the on-voltage, the low voltage being maintained by a low-level capacitor line, either one of said low-level capacitor line and said high-level capacitor line being selected depending on the voltage of a selection signal line, and either one of the high or the low voltage being applied to the other terminal of said storage capacitor.