Display device
View Patent ↗According to one embodiment, a display device includes a first substrate unit, a second substrate unit, a display layer, and a sealing portion. The first substrate unit includes a first substrate, a display electrode, a terminal portion, and a first insulating layer. The first substrate has a first major surface. The first major surface has a display region and a peripheral region. The display electrode is provided in the display region. The terminal portion is provided in the peripheral region and electrically connected to the display electrode. The first insulating layer is provided on the display and peripheral regions. The second substrate unit faces the first major surface. The display layer is provided between the display electrode and the second substrate unit. The sealing portion is provided between the first and second substrate units. The sealing portion surrounds the display layer and contacts the first insulating layer.
1. A display device comprising:
a first substrate unit including:
a first substrate having a first major surface, the first major surface having a display region and a peripheral region on an outer side of the display region;
a display electrode provided in the display region;
a terminal portion provided in the peripheral region and directly or indirectly electrically connected to the display electrode; and
a first insulating layer provided on the display region and the peripheral region, the first insulating layer covering the display electrode while exposing at least a part of the terminal portion;
a second substrate unit facing the first major surface, the second substrate unit including:
a second substrate having a second major surface, the second major surface facing the first major surface; and
a second insulating layer provided on the second major surface;
a display layer provided between the display electrode and the second substrate unit;
a sealing portion provided between the first substrate unit and the second substrate unit, the sealing portion surrounding the display layer and contacting the first insulating layer, an outer edge of the sealing portion being located on an inner side of an outer edge of the first insulating layer; and
a distance control portion provided between the first substrate and the second substrate, the distance control portion controlling a distance between the first substrate and the second substrate, wherein
the display layer includes a liquid crystal layer,
the first insulating layer contains a first polysiloxane including an organic group, the first insulating layer aligning liquid crystals in the liquid crystal layer,
the first insulating layer directly contacts the liquid crystal layer in the display region,
the first insulating layer directly contacts the sealing portion in the peripheral region,
the second insulating layer contains a second polysiloxane including an organic group, the second insulating layer aligning the liquid crystals,
the distance control portion includes a side face along a plane crossing the first major surface,
at least one of the first insulating layer and the second insulating layer directly contacts the side face,
the at least one of the first insulating layer and the second insulating layer is disposed between the side face and the sealing portion, and
the at least one of the first insulating layer and the second insulating layer directly contacts the sealing portion between the side face and the sealing portion.
2. The device according to claim 1 , wherein
the first substrate unit further includes an interlayer insulating film provided between the first substrate and the display electrode, and
an outer edge of the interlayer insulating film is located on an inner side of the outer edge of the sealing portion.
3. The device according to claim 2 , wherein the outer edge of the interlayer insulating film is located on an inner side of an inner edge of the sealing portion.
4. The device according to claim 2 , wherein the interlayer insulating film includes an acrylic resin.
5. The device according to claim 1 , wherein
the first substrate unit further includes
an interlayer insulating film provided between the first substrate and the display electrode, and
a circuit unit provided between the first substrate and the interlayer insulating film and configured to control the display electrode, and
an outer edge of the circuit unit is located on an outer side of an inner edge of the sealing portion.
6. The device according to claim 5 , wherein at least a part of the circuit unit faces the sealing portion.
7. The device according to claim 1 , wherein at least a part of the distance control portion is surrounded by the sealing portion.
8. The device according to claim 1 , wherein the distance control portion fully surrounds an entire perimeter of the display layer along the sealing portion.
9. The device according to claim 1 , wherein the distance control portion has a frame shape along the sealing portion.
10. The device according to claim 1 , wherein
the second substrate unit further includes a counter electrode provided on the second major surface, and
the second insulating layer covers the counter electrode.
11. The device according to claim 1 , wherein
the first substrate unit further includes
an interconnection provided on the first major surface, and
a switching element provided on the first major surface and connected to the interconnection, and
the terminal portion is electrically connected to the display electrode through the interconnection and the switching element.
12. The device according to claim 1 , wherein a thickness of the first insulating layer is 10 nanometers or more and 1,000 nanometers or less.
13. The device according to claim 1 , wherein a thickness of the first insulating layer is 50 nanometers or more and 2,000 nanometers or less.
14. The device according to claim 1 , wherein the sealing portion includes at least one of a thermosetting resin and a UV hardening resin.
15. The device according to claim 1 , wherein the second insulating layer directly contacts the liquid crystal layer in the display region.