Semiconductor device, display device, and electronic device
Objects are to provide a semiconductor device with a novel structure, to provide a semiconductor device with low power consumption, and to provide a semiconductor device with a small chip area. A digital-analog converter and a frame memory are included. The frame memory includes a sample-and-hold circuit, a correction circuit, and a source follower circuit. The sample-and-hold circuit retains the analog voltage output from the digital-analog converter. The correction circuit corrects the analog voltage retained in the sample-and-hold circuit. The source-follower circuit outputs the corrected analog voltage. The sample-and-hold-circuit, the correction circuit, and the source follower circuit each comprise a first transistor. The first transistor comprises an oxide semiconductor layer in a semiconductor layer.
1. A semiconductor device comprising:
a digital-analog converter in a first layer comprising a first transistor; and
a frame memory in a second layer comprising:
a sample-and-hold circuit comprising a second transistor;
a correction circuit comprising a third transistor; and
a source follower circuit comprising a fourth transistor,
wherein the sample-and-hold circuit is configured to retain an analog voltage output from the digital-analog converter,
wherein the correction circuit is configured to correct the analog voltage retained in the sample-and-hold circuit,
wherein the source follower circuit is configured to output the analog voltage,
wherein the first transistor comprises silicon in a channel formation region,
wherein each of the second transistor, the third transistor, and the forth transistor comprises an oxide semiconductor in a channel formation region,
wherein one of a source and a drain of the second transistor and one of a source and a drain of a third transistor are electrically connected to the first transistor through a first wiring, and
wherein the first wiring is embedded in an opening of an insulating layer.
2. A display panel comprising a display device and the semiconductor device according to claim 1 .
3. An electronic device comprising a control unit and the display panel according to claim 2 .
4. The semiconductor device according to claim 1 , wherein the second transistor, the third transistor, and the fourth transistor are positioned over the first transistor with the insulating layer therebetween.
5. The semiconductor device according to claim 1 , wherein the oxide semiconductor layer comprises indium.
6. The semiconductor device according to claim 1 , wherein each of the second transistor, the third transistor, and the fourth transistor comprises a backgate.
7. The semiconductor device according to claim 1 ,
wherein the sample-and-hold circuit further comprises a capacitor,
wherein one electrode of the capacitor is electrically connected to the other of the source and the drain of the second transistor, and
wherein the other electrode of the capacitor is electrically connected to the other of the source and the drain of the third transistor.
8. A semiconductor device comprising:
a digital-analog converter in a first layer comprising a first transistor;
a frame memory in a second layer comprising:
a sample-and-hold circuit comprising a second transistor;
a correction circuit comprising a third transistor; and
a source follower circuit comprising a fourth transistor; and
a buffer circuit comprising a fifth transistor,
wherein the sample-and-hold circuit is configured to retain an analog voltage output from the digital-analog converter,
wherein the correction circuit is configured to correct the analog voltage retained in the sample-and-hold circuit,
wherein the source follower circuit is configured to output the analog voltage to the buffer circuit,
wherein each of the first transistor and the fifth transistor comprises silicon in a channel formation region,
wherein each of the second transistor, the third transistor, and the fourth transistor comprises an oxide semiconductor in a channel formation region,
wherein one of a source and a drain of the second transistor and one of a source and a drain of the third transistor are electrically connected to the first transistor through a first wiring,
wherein the other of the source and the drain of the third transistor and one of a source and a drain of the fourth transistor are electrically connected to the fifth transistor through a second wiring, and
wherein each of the first wiring and the second wiring is embedded in an opening of an insulating layer.
9. A display panel comprising a display device and the semiconductor device according to claim 8 .
10. An electronic device comprising a control unit and the display panel according to claim 9 .
11. The semiconductor device according to claim 8 , wherein the second transistor, the third transistor, and the fourth transistor are positioned over the first transistor and the fifth transistor with the insulating layer therebetween.
12. The semiconductor device according to claim 8 , wherein the oxide semiconductor layer comprises indium.
13. The semiconductor device according to claim 8 , wherein each of the second transistor, the third transistor, and the fourth transistor comprises a backgate.
14. The semiconductor device according to claim 8 ,
wherein the sample-and-hold circuit further comprises a capacitor,
wherein one electrode of the capacitor is electrically connected to the other of the source and the drain of the second transistor, and
wherein the other electrode of the capacitor is electrically connected to the other of the source and the drain of the third transistor.