Sharp Kabushiki Kaisha Corporation

Sunao Etou

Yuji Yamamoto

Hisao Okada

Kuniaki Tanaka

A driver circuit for driving a capacitive load has a first electrode and a second electrode. The driver circuit includes: a first charging section, connected with the first electrode, for applying a charge to the first electrode during a. first period and receiving a charge from the first electrode during a second period; a second charging section, connected with the second electrode, for receiving a charge from the second electrode during the first period and applying a charge to the second electrode during the second period; a first section for prohibiting a movement of a charge between the first charging section and the first electrode during a third period between the first period and the second period; a second section for prohibiting a movement of a charge between the second charging section and the second electrode during the third period; and a third section for allowing a movement of a charge between the first electrode and the second electrode during a fourth period included in the third period.

Driver circuit

A driving circuit used in a display apparatus includes a plurality of output circuits for selecting two reference gradation voltages among a plurality of different reference gradation voltages based on display data and outputting an interpolation voltage corresponding to the display data using the two reference gradation voltages; and a plurality of supply lines for supplying the plurality of reference gradation voltages. The supply lines including a plurality of voltage supply lines and a plurality of signal supply lines. One of the plurality of voltage supply lines supplies a voltage having a minimum difference from the voltage of a common electrode of the display apparatus and another of the plurality of voltage supply lines supplies a voltage having a maximum difference from the voltage of the common electrode. The two reference gradation voltages selected by each of the output circuits are supplied by one of a plurality of pairs of supply lines. At least one of the pair has a signal supply line and a supply line having a voltage higher than the signal supply line, and another of the pairs has a signal supply line and a voltage supply line having a voltage lower than the signal supply line.

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Tenri, Japan

Sunao Etou