Transparent type liquid crystal display device
View Patent ↗A first conductive layer in which a first electrode film is formed, a first protective layer on the first conductive layer, a first hole penetrating through the first protective layer to reach the first electrode film, a second conductive layer including a second electrode film which is disposed on the first protective layer and in contact with a portion of the first electrode film at the bottom of the first hole and the lower electrode, a second protective layer disposed on the second conductive layer and including the insulating film, a second hole disposed on the second protective layer and penetrating through the second protective layer to reach the second electrode film, and a third conductive layer including a third electrode film which is in contact with a portion of the second electrode film at the bottom of the second hole and the upper electrode.
1. A transparent type liquid crystal display device comprising:
a first substrate; and
a second substrate facing the first substrate, wherein
liquid crystal is retained between an encapsulated region of the first substrate and the second substrate,
a pixel circuit disposed at the first substrate controls the alignment of the liquid crystal by an electric field generated by using an upper electrode located on an insulating film and a lower electrode located below the insulating film, and
the first substrate includes
a first conductive layer in which a first electrode film is formed,
a first insulation protective layer disposed on the first conductive layer,
a first hole penetrating through the first insulation protective layer to reach the first electrode film,
a second conductive layer including a second electrode film which is disposed on the first insulation protective layer and in contact with a portion of the first electrode film at the bottom of the first hole, and the lower electrode which is disposed apart from the second electrode film,
a second insulation protective layer disposed on the second conductive layer and including the insulating film,
a second hole formed in a region overlapped with the first hole in a plane and penetrating through the second insulation protective layer to reach the second electrode film, and
a third conductive layer including a third electrode film which is disposed on the second insulation protective layer and in contact with a portion of the second electrode film at the bottom of the second hole, and the upper electrode which is disposed apart from the third electrode film.
2. The transparent type liquid crystal display device according to claim 1 , wherein
the first hole and the second hole are located outside the encapsulated region.
3. The transparent type liquid crystal display device according to claim 2 , wherein
the first substrate further includes
a fourth electrode film included in the first conductive layer and disposed apart from the first electrode film inside the encapsulated region, and
a third hole penetrating through the first insulation protective layer to reach the fourth electrode film,
the second insulation protective layer covers the third hole, and
the upper electrode is in contact with the fourth electrode film inside a fourth hole penetrating through the second insulation protective layer to reach the fourth electrode film.
4. The transparent type liquid crystal display device according to claim 1 , wherein
the third electrode film is thinner than the second electrode film.
5. The transparent type liquid crystal display device according to claim 1 , wherein
the first insulation protective layer is formed of a plurality of films which are different in material.
6. The transparent type liquid crystal display device according to claim 5 , wherein
the first insulation protective layer includes an organic protective film.