Electro-optical device controlling driving current to each electro-optical element to alleviate variation of intensity
An electro-optical device includes a plurality of unit circuits; a first selecting circuit that sequentially selects the plurality of unit circuits; and a first signal line through which correction data for the individual unit circuits are supplied serially. Each of the plurality of unit circuits includes an electro-optical element that exhibits an intensity corresponding to a driving current, a storage circuit that obtains correction data from the first signal line when the first selecting circuit selects the unit circuit and that stores the correction data; and a control circuit that controls the driving current supplied to the electro-optical element according to intensity data specifying the intensity exhibited by the electro-optical element and the correction data stored in the storage circuit.
1. An electro-optical device comprising:
a plurality of unit circuits;
a first selecting circuit that sequentially selects the plurality of unit circuits;
a first signal line through which correction data for the individual unit circuits are supplied serially;
a second selecting circuit that sequentially selects the plurality of unit circuits; and
a second signal line through which intensity data for the individual unit circuits are supplied serially;
wherein each of the plurality of unit circuits includes:
an electro-optical element that exhibits an intensity corresponding to a driving current;
a storage circuit that obtains correction data from the first signal line when the first selecting circuit selects the unit circuit and that stores the correction data;
a control circuit that controls the driving current supplied to the electro-optical element according to intensity data specifying the intensity exhibited by the electro-optical element and the correction data stored in the storage circuit; and
wherein each of the plurality of unit circuits includes an extracting circuit that obtains intensity data from the second signal line when the second selecting circuit selects the unit circuit, and the control circuit controls the driving current on the basis of the intensity data obtained by the extracting circuit and the correction data stored in the storage circuit.
2. The electro-optical device according to claim 1 , wherein the first selecting circuit selects each of the plurality of unit circuits in a first period, and the second selecting circuit selects each of the plurality of unit circuits in a second period that is different from the first period.
3. The electro-optical device according to claim 1 , wherein the selection of each of the plurality of unit circuits by the first selecting circuit and the selection of each of the plurality of unit circuits by the second selecting circuit are executed concurrently.
4. The electro-optical device according to claim 1 , wherein a period of the selection of each of the plurality of unit circuits by the first selecting circuit is longer than a period of the selection of each of the plurality of unit circuits by the second selecting circuit.
5. An electro-optical device comprising:
a plurality of unit circuits;
a first selecting circuit that sequentially selects the plurality of unit circuits;
a first signal line through which correction data for the individual unit circuits are supplied serially; and
a second signal line through which intensity data for the individual unit circuits are supplied serially;
wherein each of the plurality of unit circuits includes:
an electro-optical element that exhibits an intensity corresponding to a driving current;
a storage circuit that obtains correction data from the first signal line when the first selecting circuit selects the unit circuit and that stores the correction data; and
a control circuit that controls the driving current supplied to the electro-optical element according to intensity data specifying the intensity exhibited by the electro-optical element and the correction data stored in the storage circuit;
wherein each of the plurality of unit circuits includes:
an extracting circuit that obtains intensity data from the second signal line when the second selecting circuit selects the unit circuit; and
a path specifying circuit that specifies either the storage circuit or the extracting circuit when the first selecting circuit selects the unit circuit;
wherein the storage circuit obtains the correction data from the first signal line and stores the correction data when the storage circuit is specified by the path specifying circuit, and the extracting circuit obtains the intensity data from the second signal line when the extracting circuit is specified by the path specifying circuit, and
wherein the control circuit controls the driving current on the basis of the intensity data obtained by the extracting circuit and the correction data stored in the storage circuit.
6. The electro-optical device according to claim 5 , wherein a transmission frequency of the correction data on the first signal line is lower than a transmission frequency of the intensity data on the second signal line.
7. An electro-optical device comprising:
a plurality of unit circuits;
a first selecting circuit that sequentially selects the plurality of unit circuits; and
a first signal line through which correction data for the individual unit circuits are supplied serially;
wherein each of the plurality of unit circuits includes:
an electro-optical element that exhibits an intensity corresponding to a driving current;
a storage circuit that obtains correction data from the first signal line when the first selecting circuit selects the unit circuit and that stores the correction data; and
a control circuit that controls the driving current supplied to the electro-optical element according to intensity data specifying the intensity exhibited by the electro-optical element and the correction data stored in the storage circuit; and
wherein the correction data is specified by a value of a voltage on the first signal line, the storage circuit of each of the plurality of unit circuits includes a capacitor that stores, as the correction data, the voltage on the first signal line at a time of selection of the unit circuit by the first selecting circuit, and the control circuit controls the driving current on the basis of the intensity data and the voltage stored in the capacitor.
8. The electro-optical device according to claim 7 , wherein the first selecting circuit selects the individual unit circuits in periods that are separated by predetermined intervals.
9. An electro-optical device comprising:
a plurality of unit circuits;
a first selecting circuit that sequentially selects the plurality of unit circuits; and
a first signal line through which correction data for the individual unit circuits are supplied serially;
wherein each of the plurality of unit circuits includes:
an electro-optical element that exhibits an intensity corresponding to a driving current;
a storage circuit that obtains correction data from the first signal line when the first selecting circuit selects the unit circuit and that stores the correction data; and
a control circuit that controls the driving current supplied to the electro-optical element according to intensity data specifying the intensity exhibited by the electro-optical element and the correction data stored in the storage circuit;
wherein the control circuit includes:
a current generating circuit that generates a reference current having a current value corresponding to the correction data stored in the storage circuit; and
a driving unit that generates the driving current by adjusting the reference current generated by the current generating circuit to a current value corresponding to the intensity data; and
wherein the driving unit includes a driving transistor disposed on a path of the reference current, the driving transistor having a gate to which a voltage corresponding to the intensity data is applied.