Patent ID: 8169382
Filing Date: 2012-05-01
Classification: G09G

Abstract:
1. A driving circuit of an electro-optical device that has an electro-optical element, the electro-optical element emitting a brightness that is responsive to a data signal, the driving circuit comprising: a first terminal group and a second terminal group, each of the first and second terminal groups including an input terminal and an output terminal, each terminal in the first terminal group and the second terminal group being an input or an output of a semiconductor chip; a first current generator that generates a first reference current in response to a reference potential and a first input signal provided to the input terminal of the first terminal group, the first current generator including a current mirror circuit having a transistor that generates a first current that is responsive to the first input signal provided to the input terminal of the first terminal group, and a transistor that generates a mirror current of the first current as the first reference current; a second current generator that generates a second reference current in response to the reference potential and a second input signal provided to the input terminal of the second terminal group, the second current generator including a current mirror circuit having a transistor that generates a second current that is responsive to the second input signal provided to the input terminal of the second terminal group, and a transistor that generates a mirror current of the second current as the second reference current; a data signal generator that generates the data signal using, as a reference, the reference potential, which is generated in response to the first reference current and the second reference current; a first output unit that outputs a first output signal, based on the reference potential that is responsive to the first reference current and the second reference current, to the output terminal of the first terminal group, the first output signal being an output from a drain of a transistor directly connected to the output terminal of the first terminal group without any other passive or active components connected between the drain of the transistor and the output terminal of the first terminal group; and a second output unit that outputs a second output signal, based on the reference potential that is responsive to the first reference current and the second reference current, to the output terminal of the second terminal group along with the output of the first output signal, the second output signal being an output from a drain of a transistor directly connected to the output terminal of the second terminal group without any other passive or active components connected between the drain of the transistor and the output terminal of the second terminal group, wherein the input terminal of the second terminal group is connected to the output terminal of the first terminal group of an adjacent driving circuit and the output terminal of the second terminal group is connected to the input terminal of the first terminal group of the adjacent driving circuit.