Electro-optical device and method for driving the same by applying a capacitance charge, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorToshiyuki Kasai
Life of this patent
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Abstract
An electro-optical device includes a plurality of element driving lines, a plurality of unit circuits, an element driving circuit, and a data line driving circuit. The data potential corresponds to gray scale data of the unit circuit for the element driving line. Each of the plurality of unit circuits includes a capacitive element and an electro-optical element. The electro-optical element is driven in such a manner that a potential difference is generated by supplying a potential to the element driving line.
Claims11
An electro-optical device, comprising:
- a plurality of element driving lines extending at an interval between the lines;
- a plurality of unit circuits arranged corresponding to intersections between the plurality of element driving lines and a plurality of data lines;
- an element driving circuit which sequentially supplies a first potential to the element driving lines during a period of driving in each unit period;
- and
- a data line driving circuit which outputs to each of the data lines a data potential during a period of writing before the period of driving in each unit period, the data potential corresponding to gray scale data of the unit circuit for the element driving line supplied with the first potential during the period of driving in the unit period,
- wherein each of the plurality of unit circuits includes a capacitive element which has a first electrode as a reference potential and a second electrode connected to one of the data lines, and an electro-optical element which has a third electrode connected to the second electrode and a fourth electrode connected to one of the element driving lines and has a gray scale level corresponding to the data potential, and
- wherein the electro-optical element is driven in such a manner that a potential difference, which is defined by the difference between the first potential and the data potential accumulated in each of the capacitive elements in each of the unit circuits along the one data line, is generated between the third electrode and the fourth electrode by supplying the first potential to the element driving line.
A method for driving an electro-optical device, the electro-optical device including a plurality of element driving lines extending at a predetermined interval between the lines and a plurality of unit circuits arranged corresponding to intersections between the plurality of element driving lines and a plurality of data lines, and each of the plurality of unit circuits including a capacitive element which has a first electrode as a reference potential and a second electrode connected to one of the data lines and an electro-optical element which has a third electrode connected to the second electrode and a fourth electrode connected to one of the element driving lines, and has a predetermined gray scale level by discharge of the electro-optical element, the method comprising:
- accumulating charge corresponding to the data potential to the capacitive element which is connected to the data line by supplying the data potential to the data line;
- and
- driving the electro-optical element by supplying the element driving line with a first potential and generating a potential difference, which is defined by the difference between the first potential and the data potential accumulated in each of the capacitive elements in each of the unit circuits along the data line, between the third electrode and the fourth electrode.
Dependencies are inferred from the claim text.