Image display apparatus and method for driving the same
View Patent ↗The present invention sets power supply drive signals DS[ 1 ] and DS[ 2 ] at a power supply voltage Vcc in a timesharing for odd lines and their subsequent even lines and sets a write signal WS to correspond to the time division setting, thereby sharing a scan line of the write signal WS between the odd lines and the subsequent even lines.
1. An image display apparatus comprising:
a first power supply scan line directly electrically connected to a source/drain of a first row drive transistor, said first power supply scan line extending along a scan line direction;
a second power supply scan line directly electrically connected to a source/drain of a second row drive transistor, said second power supply scan line extending along said scan line direction;
a signal line directly electrically connected to a source/drain of a first row write transistor and a source/drain of a second row write transistor, said signal line extending along a direction other than said scan line direction;
a write signal scan line directly electrically connected to a gate of the first row write transistor and a gate of the second row write transistor, said write signal scan line being between said first power supply scan line and said second power supply scan line.
2. The image display apparatus according to claim 1 , wherein an electrical connection from said write signal scan line to said source/drain of the first row drive transistor intersects said first power supply scan line.
3. The image display apparatus according to claim 2 , wherein an electrical connection from said write signal scan line to said source/drain of the second row drive transistor intersects said second power supply scan line.
4. The image display apparatus according to claim 1 , wherein said write signal scan line extends along said scan line direction.
5. The image display apparatus according to claim 1 , wherein said first power supply scan line is between said write signal scan line and a first pixel circuit, said first row drive transistor and said first row write transistor being within said first pixel circuit.
6. The image display apparatus according to claim 5 , wherein said second power supply scan line is between said write signal scan line and a second pixel circuit, said second row drive transistor and said second row write transistor being within said second pixel circuit.
7. The image display apparatus according to claim 1 , wherein said first row drive transistor is configurable to provide electrical connection and disconnection between said first power supply scan line and a first light emission device.
8. The image display apparatus according to claim 7 , wherein said second row drive transistor is configurable to provide electrical connection and disconnection between said second power supply scan line and a second light emission device.
9. The image display apparatus according to claim 1 , wherein said first row write transistor is configurable to provide electrical connection and disconnection between said signal line and said first row drive transistor.
10. The image display apparatus according to claim 1 , wherein a write signal on the write signal scan line controls said first row write transistor to provide said electrical connection and disconnection between said signal line and said first row drive transistor.
11. The image display apparatus according to claim 10 , wherein said second row write transistor is configurable to provide electrical connection and disconnection between said signal line and said second row drive transistor.
12. The image display apparatus according to claim 1 , further comprising:
a scan line drive circuit configured to output a tone setting write signal onto said write signal scan line after outputting a correction write signal onto said write signal, said tone setting voltage being a sum of a voltage at the first electrode and a voltage at the second electrode.
13. The image display apparatus according to claim 12 , wherein said first power supply scan line and said second power supply scan line are directly electrically connected to said scan line drive circuit, said scan line drive circuit being directly electrically connected to said write signal scan line.
14. The image display apparatus according to claim 12 , wherein said first row write transistor is configured to perform a transfer of a tone setting voltage from said signal line to said gate of the first drive transistor, said tone setting write signal controlling said transfer of the tone setting voltage.
15. The image display apparatus according to claim 14 , wherein said scan line drive circuit is configured to output a power supply voltage onto said first power supply scan line while controlling said first row write transistor to provide said tone setting voltage from said signal line to said gate of the first drive transistor.
16. The image display apparatus according to claim 12 , wherein said first row write transistor is configured to perform a transfer of a correction voltage from said signal line to said gate of the first row drive transistor when a first power supply drive signal on said first power supply scan line is at a fixed voltage.
17. The image display apparatus according to claim 16 , wherein a voltage level of the correction voltage is not less than a threshold voltage of the first row drive transistor.
18. The image display apparatus according to claim 16 , wherein said scan line drive circuit is configured to change a voltage on the second power supply scan line from said power supply voltage to said fixed voltage.
19. The image display apparatus according to claim 16 , wherein said fixed voltage is lower than said power supply voltage.
20. The image display apparatus according to claim 16 , wherein said first power supply drive signal is at said fixed voltage during a light non-emission period, light emission luminance from said first light emission device being non-emissible during said light non-emission period.
21. The image display apparatus according to claim 20 , wherein said scan line drive circuit is configured to start said light non-emission period by changing said first power supply drive signal from said power supply voltage to said fixed voltage.
22. The image display apparatus according to claim 16 , wherein a capacitor is dischargeable while said correction voltage is provided said gate of the first row drive transistor.
23. The image display apparatus according to claim 22 , wherein a source/drain of the first row drive transistor is directly electrically connected to an electrode of the capacitor, another electrode of the capacitor and a drain/source of the first row write transistor being electrically connected to said gate of the first row drive transistor.