Semiconductor device including transistor with oxide semiconductor
View Patent ↗A semiconductor device of the invention includes a data line, a power source line, a first scan line, a second scan line, a first transistor, a second transistor, a memory circuit, a third transistor, and a light-emitting element. A gate of the first transistor is connected to the data line, and a first terminal thereof is connected to the power source line; a gate of the second transistor is connected to the first scan line, and a first terminal thereof is connected to a second terminal of the first transistor; the memory circuit is connected to a second terminal of the second transistor and the second scan line; a first terminal of the third transistor is connected to the light-emitting element; and the memory circuit holds a first potential inputted from the power source line or a second potential inputted from the second scan line, and applies the potential to a gate of the third transistor to control emission/non-emission of the light-emitting element.
1. A semiconductor device comprising:
a pixel, the pixel comprising:
a first transistor, wherein a gate of the first transistor is electrically connected to a first line;
a second transistor, wherein one of a source and a drain of the second transistor is directly electrically connected to one of a source and a drain of the first transistor, and a gate of the second transistor is electrically connected to a second line;
a third transistor, wherein a gate of the third transistor is electrically connected to the other one of the source and the drain of the second transistor, and one of a source and a drain of the third transistor is electrically connected to a third line; and
a light emitting element electrically connected to the other one of the source and the drain of the third transistor,
wherein the first line is a data line,
wherein the first transistor and the second transistor are connected in series,
wherein the other one of the source and the drain of the first transistor is not electrically connectable to the one of the source and the drain of the third transistor,
wherein at least one of the first transistor, the second transistor and the third transistor comprises:
a semiconductor film;
a gate insulating film adjacent to the semiconductor film; and
a gate electrode adjacent to the semiconductor film with the gate insulating film interposed therebetween, and
wherein the semiconductor film comprises an oxide semiconductor comprising indium.
2. The semiconductor device according to claim 1 , wherein the oxide semiconductor further comprises gallium and zinc.
3. The semiconductor device according to claim 1 , wherein the oxide semiconductor is an amorphous oxide semiconductor.
4. The semiconductor device according to claim 1 , wherein the second line is a scan line.
5. The semiconductor device according to claim 1 , wherein the third line is a power source line.
6. The semiconductor device according to claim 1 , further comprising a power source line electrically connected to the other one of the source and the drain of the first transistor.
7. The semiconductor device according to claim 1 , further comprising a memory circuit electrically connected the gate of the third transistor.
8. The semiconductor device according to claim 1 , wherein the gate insulating film comprises silicon oxide.
9. An electronic book comprising the semiconductor device according to claim 1 .
10. The semiconductor device according to claim 1 , further comprising:
a second pixel, the second pixel comprising:
a fourth transistor, wherein a gate of the fourth transistor is electrically connected to the first line;
a fifth transistor, wherein one of a source and a drain of the fifth transistor is electrically connected to one of a source and a drain of the fourth transistor, and a gate of the fifth transistor is electrically connected to a fourth line;
a sixth transistor, wherein a gate of the sixth transistor is electrically connected to the other one of the source and the drain of the fifth transistor, and one of a source and a drain of the sixth transistor is electrically connected to the third line; and
a light emitting element electrically connected to the other one of the source and the drain of the sixth transistor,
wherein the other one of the source and the drain of the first transistor of the pixel and the other one of the source and the drain of the fourth transistor of the second pixel are electrically connected a fifth line.
11. The semiconductor device according to claim 10 , wherein the oxide semiconductor further comprises gallium and zinc.
12. The semiconductor device according to claim 10 , wherein the oxide semiconductor is an amorphous oxide semiconductor.
13. The semiconductor device according to claim 10 , wherein the second line is a scan line.
14. The semiconductor device according to claim 10 , wherein the third line is a power source line.
15. The semiconductor device according to claim 10 , wherein the fifth line is a power source line.
16. The semiconductor device according to claim 10 , further comprising a memory circuit electrically connected the gate of the third transistor.
17. The semiconductor device according to claim 10 , wherein the gate insulating film comprises silicon oxide.
18. An electronic book comprising the semiconductor device according to claim 10 .
19. A semiconductor device comprising:
a plastic substrate; and
a pixel over the plastic substrate, the pixel comprising:
a first transistor, wherein a gate of the first transistor is electrically connected to a first line;
a second transistor, wherein one of a source and a drain of the second transistor is directly electrically connected to one of a source and a drain of the first transistor, and a gate of the second transistor is electrically connected to a second line;
a third transistor, wherein a gate of the third transistor is electrically connected to the other one of the source and the drain of the second transistor, and one of a source and a drain of the third transistor is electrically connected to a third line; and
a light emitting element electrically connected to the other one of the source and the drain of the third transistor,
wherein the first line is a data line,
wherein the first transistor and the second transistor are connected in series,
wherein the other one of the source and the drain of the first transistor is not electrically connectable to the one of the source and the drain of the third transistor,
wherein at least one of the first transistor, the second transistor and the third transistor comprises:
a semiconductor film;
a gate insulating film adjacent to the semiconductor film; and
a gate electrode adjacent to the semiconductor film with the gate insulating film interposed therebetween, and
wherein the semiconductor film comprises an oxide semiconductor comprising indium.
20. The semiconductor device according to claim 19 , wherein the oxide semiconductor further comprises gallium and zinc.
21. The semiconductor device according to claim 19 , wherein the oxide semiconductor is an amorphous oxide semiconductor.
22. The semiconductor device according to claim 19 , wherein the second line is a scan line.
23. The semiconductor device according to claim 19 , wherein the third line is a power source line.
24. The semiconductor device according to claim 19 , further comprising a power source line electrically connected to the other one of the source and the drain of the first transistor.
25. The semiconductor device according to claim 19 , further comprising a memory circuit electrically connected the gate of the third transistor.
26. The semiconductor device according to claim 19 , wherein the gate insulating film comprises silicon oxide.
27. An electronic book comprising the semiconductor device according to claim 19 .