DISPLAY DEVICE
A display device includes an aperture substrate including a plurality of openings arranged in a matrix form and a plurality of shutter parts that are arranged between a first substrate and a second substrate correspondingly to the openings. The plurality of shutter parts move in a horizontal direction relative to the aperture substrate so as to control an amount of light emitted from the plurality of openings. Also, the display device includes a liquid holding wall configured to hold a liquid between the first substrate and the second substrate and is arranged to surround a display area including the plurality of shutter parts, and includes at least one bubble holding part configured to hold a bubble that is generated in the liquid and is guided to the at least one bubble holding part. The at least one bubble holding part is provided as a part of the liquid holding wall.
1 . A display device comprising:
an aperture substrate including a plurality of openings arranged in a matrix form;
a plurality of shutter parts that are arranged between a first substrate and a second substrate correspondingly to the plurality of openings, wherein the plurality of shutter parts move in a horizontal direction relative to the aperture substrate so as to control an amount of light emitted from the plurality of openings;
a liquid holding wall configured to hold a liquid between the first substrate and the second substrate and is arranged to surround a display area including the plurality of shutter parts; and
at least one bubble holding part configured to hold a bubble that is generated in the liquid and is guided to the at least one bubble holding part, wherein the at least one bubble holding part is provided as a part of the liquid holding wall.
2 . The display device according to claim 1 , wherein the bubble holding part is arranged outside the display area.
3 . The display device according to claim 1 , wherein four bubble holding parts including the at least one bubble holding part are provided so as to be continuous with ends of the liquid holding wall.
4 . The display device according to claim 1 , wherein the at least one bubble holding part includes a guide wall to guide the bubble to an inside of the bubble holding part.
5 . The display device according to claim 4 , wherein the guide wall has a width which becomes narrow toward the outside of the display area.
6 . The display device according to claim 1 , wherein the at least one bubble holding part includes a movement preventing wall so as to prevent the bubble from moving to the display area from the bubble holding part.
7 . The display device according to claim 6 , wherein the movement preventing wall is formed in an L shape, and is arranged so as to cause the bubble guided from the guide wall to move toward an outside of the bubble holding part.
8 . The display device according to claim 6 , wherein the liquid holding wall, the bubble holding wall, the guide wall and the movement preventing wall are made of a same seal member.
9 . The display device according to claim 1 , wherein:
each of the shutter parts includes an electrode plate,
the display device further includes a power supply electrode plate arranged to face the electrode plate,
the shutter part is moved by applying a voltage between the electrode plate and the power supply electrode plate, and
the liquid enhances a dielectric constant between the electrode plate and the power supply electrode plate as compared with a case where the liquid is not sealed.
10 . The display device according to claim 1 , wherein the liquid is a silicone oil.
11 . The display device according to claim 1 , wherein the display area further includes a light source part, and the shutter parts control an amount of light emitted from the light source part through the plurality of openings of the aperture substrate.