التفاصيل البيبلوغرافية
| العنوان: |
ELECTRO-OPTICAL DEVICE, METHOD FOR DRIVING ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS |
| Document Number: |
20070285383 |
| تاريخ النشر: |
December 13, 2007 |
| Appl. No: |
11/689293 |
| Application Filed: |
March 21, 2007 |
| مستخلص: |
An electro-optical device includes a substrate; a plurality of pixel electrodes that are disposed in a pixel area on the substrate; a plurality of scanning lines and a plurality of data lines that are disposed on the substrate so as to intersect each other in the pixel area; an image signal line that is disposed on the substrate, an image signal being supplied to the image signal line, the polarity of the image signal being inverted, every horizontal scanning period, between a positive polarity in which the potential of the image signal is higher than a predetermined potential and a negative polarity in which the potential of the image signal is lower than the predetermined potential; a sampling circuit that is disposed on the substrate and that includes a plurality of sampling switches each supplying one of a plurality of sampled image signals to a corresponding one of the data lines in accordance with a corresponding one of a plurality of sampling signals; a data line driving circuit that is disposed on the substrate and that outputs the sampling signals at timings at which the sampled image signals are to be supplied to the corresponding data lines; a plurality of switching elements that are disposed on the substrate so as to be each electrically connected to a corresponding one of the scanning lines and a corresponding one of the data lines and that perform switching control on the sampled image signals to be supplied from the corresponding data lines to the pixel electrodes corresponding thereto; and a scanning line driving circuit that is disposed on the substrate and that supplies to each of the plurality of scanning lines a scanning signal for switching the state of the corresponding switching element from on to off at a timing that is shifted by a predetermined period of time with respect to a timing at which the polarity of the image signal is inverted. |
| Inventors: |
IIZUKA, Hideaki (Suwa-shi, JP) |
| Assignees: |
SEIKO EPSON CORPORATION (Tokyo, JP) |
| Claim: |
1. An electro-optical device comprising: a substrate; a plurality of pixel electrodes that are disposed in a pixel area on the substrate; a plurality of scanning lines and a plurality of data lines that are disposed on the substrate so as to intersect each other in the pixel area; an image signal line that is disposed on the substrate, an image signal being supplied to the image signal line, the polarity of the image signal being inverted, every horizontal scanning period, between a positive polarity in which the potential of the image signal is higher than a predetermined potential and a negative polarity in which the potential of the image signal is lower than the predetermined potential; a sampling circuit that is disposed on the substrate and that includes a plurality of sampling switches each supplying one of a plurality of sampled image signals to a corresponding one of the data lines in accordance with a corresponding one of a plurality of sampling signals; a data line driving circuit that is disposed on the substrate and that outputs the sampling signals at timings at which the sampled image signals are to be supplied to the corresponding data lines; a plurality of switching elements that are disposed on the substrate so as to be each electrically connected to a corresponding one of the scanning lines and a corresponding one of the data lines and that perform switching control on the sampled image signals to be supplied from the corresponding data lines to the pixel electrodes corresponding thereto; and a scanning line driving circuit that is disposed on the substrate and that supplies to each of the plurality of scanning lines a scanning signal for switching the state of the corresponding switching element from on to off at a timing that is shifted by a predetermined period of time with respect to a timing at which the polarity of the image signal is inverted. |
| Claim: |
2. The electro-optical device according to claim 1, wherein each of the plurality of switching elements is turned off at a fall timing at which the level of the waveform of the scanning signal falls, and wherein the fall timing is advanced with respect to the timing at which the polarity of the image signal is inverted. |
| Claim: |
3. The electro-optical device according to claim 1, wherein each of the plurality of switching elements is turned off at a fall timing at which the level of the waveform of the scanning signal falls, and wherein the fall timing is delayed with respect to the timing at which the polarity of the image signal is inverted. |
| Claim: |
4. The electro-optical device according to claim 2, further comprising an enable signal line that supplies to the scanning line driving circuit an enable signal in which a timing at which the level of the waveform of the enable signal falls is advanced by the predetermined period of time with respect to the timing at which the polarity of the image signal is inverted, wherein the scanning line driving circuit includes a shift register that sequentially outputs transfer signals from a plurality of stages in accordance with a clock signal having a predetermined cycle and a plurality of logic circuits that perform shaping of pulses of the sequentially output transfer signals using the enable signal. |
| Claim: |
5. The electro-optical device according to claim 3, further comprising: a clock signal line to which a clock signal having a predetermined cycle that defines the fall timing is supplied; and a resistor that is electrically connected between the clock signal line and the scanning line driving circuit. |
| Claim: |
6. A method for driving an electro-optical device including a substrate; a plurality of pixel electrodes that are disposed in a pixel area on the substrate; a plurality of scanning lines and a plurality of data lines that are disposed on the substrate so as to intersect each other in the pixel area; an image signal line that is disposed on the substrate, an image signal being supplied to the image signal line; a sampling circuit that is disposed on the substrate and that includes a plurality of sampling switches each supplying one of a plurality of sampled image signals to a corresponding one of the data lines in accordance with a corresponding one of a plurality of sampling signals; a data line driving circuit that is disposed on the substrate and that outputs the sampling signals to the corresponding data lines; a plurality of switching elements that are disposed on the substrate so as to be each electrically connected to a corresponding one of the scanning lines and a corresponding one of the data lines and that perform switching control on the sampled image signals to be supplied from the corresponding data lines to the pixel electrodes corresponding thereto; and a scanning line driving circuit that is disposed on the substrate and that outputs a scanning signal to each of the plurality of scanning lines, the method comprising: supplying the image signal to the image signal line such that the polarity of the image signal is inverted, every horizontal scanning period, between a positive polarity in which the potential of the image signal is higher than a predetermined potential and a negative polarity in which the potential of the image signal is lower than the predetermined potential; and supplying the scanning signal to each of the plurality of switching elements via the corresponding scanning line such that the switching element is turned on at a timing at which the corresponding sampled image signal is to be supplied to the corresponding pixel electrode and such that the switching element in the on-state is turned off at a timing that is shifted by a predetermined period of time with respect to a timing at which the polarity of the image signal is inverted. |
| Claim: |
7. An electronic apparatus comprising the electro-optical device according to claim 1. |
| Current U.S. Class: |
345/103 |
| Current International Class: |
09 |
| رقم الانضمام: |
edspap.20070285383 |
| قاعدة البيانات: |
USPTO Patent Applications |