Liquid crystal display device and semiconductor device
View Patent ↗By increasing an interval between electrodes which drives liquid crystals, a gradient of an electric field applied between the electrodes can be controlled and an optimal electric field can be applied between the electrodes. The invention includes a first electrode formed over a substrate, an insulating film formed over the substrate and the first electrode, a thin film transistor including a semiconductor film in which a source, a channel region, and a drain are formed over the insulating film, a second electrode located over the semiconductor film and the first electrode and including first opening patterns, and liquid crystals provided over the second electrode.
1. A liquid crystal display device comprising:
a first substrate;
a gate electrode over the first substrate;
a gate insulating film over the gate electrode;
a semiconductor film comprising a channel formation region over the gate insulating film;
a pixel electrode over the first substrate;
a first insulating film over the pixel electrode;
a conductive film over and electrically connected to the semiconductor film and the pixel electrode;
a second insulating film over the first insulating film;
a common electrode over the second insulating film;
a liquid crystal over the common electrode; and
a second substrate over the liquid crystal,
wherein the first insulating film comprises silicon nitride,
wherein the second insulating film comprises silicon nitride;
wherein the common electrode comprises indium and tin,
wherein the channel formation region does not overlapped with the common electrode,
wherein the pixel electrode and the common electrode overlaps with each other at least partly,
wherein the pixel electrode does not include a slit,
wherein the pixel electrode and a common electrode have a transparent characteristic,
wherein the common electrode is continuously provided over a plurality of pixels aligned in a source wiring direction.
2. The liquid crystal display device according to claim 1 ,
wherein the common electrode comprises a first slit and a second slit, and
wherein a long side of the first slit and a long side of the second slit are aligned along different direction.
3. The liquid crystal display device according to claim 1 , wherein the pixel electrode is in contact with the first substrate.
4. The liquid crystal display device according to claim 1 , wherein the gate electrode is located over the first insulating film.
5. A liquid crystal display module comprising:
the liquid crystal display device according to claim 1 ;
an integration circuit; and
a flexible print circuit electrically connected to the liquid crystal display device and the integration circuit.
6. An electronic device comprising:
a main body;
the liquid crystal display device according to claim 5 , the liquid crystal display device is provided with the main body; and
an operation key provided with the main body.
7. A liquid crystal display device comprising:
a first substrate;
a conductive film over the substrate;
a first insulating film over the conductive film;
a semiconductor film comprising a channel formation region over the first insulating film;
a gate insulating film over the semiconductor film;
a gate electrode over the semiconductor film with the gate insulating film therebetween;
a common electrode over the first substrate;
a second insulating film over the common electrode;
a pixel electrode over the second insulating film;
a liquid crystal over the pixel electrode; and
a second substrate over the liquid crystal,
wherein the conductive film overlaps with the channel formation region,
wherein the first insulating film comprises silicon nitride,
wherein the second insulating film comprises silicon nitride,
wherein the gate insulting film comprises silicon oxide,
wherein the common electrode comprises indium and tin,
wherein the pixel electrode and the common electrode overlaps with each other at least partly,
wherein the common electrode is continuously provided over a plurality of pixels aligned in a source wiring direction.
8. The liquid crystal display device according to claim 7 , wherein the conductive film comprises indium and tin.
9. The liquid crystal display device according to claim 7 , wherein the conductive film has light-transmitting property.
10. The liquid crystal display device according to claim 7 , wherein the conductive film is electrically connected to the semiconductor film.
11. The liquid crystal display device according to claim 7 , wherein the common electrode is in contact with the first substrate.
12. The liquid crystal display device according to claim 7 , wherein the first insulating film is over the conductive film.
13. The liquid crystal display device according to claim 7 ,
wherein the pixel electrode comprises a first slit and a second slit, and
wherein a long side of the first slit and a long side of the second slit are aligned along different direction.
14. A liquid crystal display module comprising:
the liquid crystal display device according to claim 7 an integration circuit; and
a flexible print circuit electrically connected to the liquid crystal display device and the integration circuit.
15. An electronic device comprising:
a main body;
the liquid crystal display device according to claim 7 , the liquid crystal display device is provided with the main body; and
an operation key provided with the main body.
16. A liquid crystal display device comprising:
a first substrate;
a gate electrode over the first substrate;
a gate insulating film over the gate electrode;
a semiconductor film comprising a channel formation region over the gate insulating film;
a pixel electrode over the first substrate;
a first insulating film over the pixel electrode;
a conductive film over and electrically connected to the semiconductor film and the pixel electrode;
a second insulating film over the first insulating film;
a common electrode over the second insulating film;
a liquid crystal over the common electrode; and
a second substrate over the liquid crystal,
wherein the semiconductor film comprises a-InGaZnO,
wherein the first insulating film comprises silicon nitride,
wherein the second insulating film comprises silicon nitride;
wherein the common electrode comprises indium and tin,
wherein the channel formation region does not overlapped with the common electrode,
wherein the pixel electrode and the common electrode overlaps with each other at least partly,
wherein the pixel electrode does not include a slit,
wherein the pixel electrode and a common electrode have a transparent characteristic,
wherein the common electrode is continuously provided over a plurality of pixels aligned in a source wiring direction.
17. The liquid crystal display device according to claim 16 ,
wherein the common electrode comprises a first slit and a second slit, and
wherein a long side of the first slit and a long side of the second slit are aligned along different direction.
18. The liquid crystal display device according to claim 16 , wherein the pixel electrode is in contact with the first substrate.
19. The liquid crystal display device according to claim 16 , wherein the gate electrode is located over the first insulating film.
20. A liquid crystal display module comprising:
the liquid crystal display device according to claim 16 ;
an integration circuit; and
a flexible print circuit electrically connected to the liquid crystal display device and the integration circuit.
21. An electronic device comprising:
a main body;
the liquid crystal display device according to claim 16 , the liquid crystal display device is provided with the main body; and
an operation key provided with the main body.