Display device with sufficient adhesive strength for sealing material
A display device which can ensure a sufficient adhesive strength on an adhering surface between each of a pair of substrates of a liquid crystal display panel and a sealing material is provided. A display device includes: a first substrate on which a predetermined integrated circuit is formed; a second substrate which is arranged on one surface of the first substrate in an overlapping manner; and an adhesive material which is arranged between the first substrate and the second substrate and has an annular planar shape as viewed from the surface of the first substrate, the adhesive material being provided for adhering the first substrate and the second substrate, wherein an outer periphery of the adhesive material as viewed from the surface of the first substrate includes a zone which is constituted of a plurality of first portions passing substantially the same position as an outer periphery of the surface of the first substrate and a plurality of second portions each of which is connected with the two neighboring first portions and has a center portion thereof in a peripheral direction retracted toward an inner peripheral side of the adhesive material as viewed from the surface of the first substrate.
1. A display device comprising:
a first substrate on which a predetermined integrated circuit is formed;
a second substrate which is arranged on one surface of the first substrate in an overlapping manner; and
an adhesive material which is arranged between the first substrate and the second substrate and has an annular planar shape as viewed from the surface of the first substrate, the adhesive material being provided for adhering the first substrate and the second substrate, wherein
an outer periphery of the adhesive material as viewed from the surface of the first substrate includes a zone which is constituted of a plurality of first portions passing substantially the same position as an outer periphery of the surface of the first substrate and a plurality of second portions each of which is connected with said two neighboring first portions and has a center portion thereof in a peripheral direction retracted toward an inner peripheral side of the adhesive material as viewed from the surface of the first substrate.
2. A display device according to claim 1 , wherein the adhesive material is configured such that a distance between the first portion and an inner periphery of the adhesive material as viewed from the surface of the first substrate is longer than a distance between the center portion of the second portion in the peripheral direction and the inner periphery of the adhesive material as viewed from the surface of the first substrate.
3. A display device according to claim 2 , wherein the surface of the first substrate has an approximately rectangular shape, and the zone exists on portions of the outer periphery of the adhesive material which extend along two respective sides of the outer periphery of the surface of the first substrate which are arranged parallel to each other.
4. A display device according to claim 3 , wherein external connection terminals of the integrated circuit are arranged along one side of the outer periphery of the surface of the first substrate, and
the zone of the adhesive material exists on portions of the outer periphery of the surface of the first substrate which extend along two respective sides of the first substrate which are connected with the side of the first substrate along which the external connection terminals are arranged.
5. A display device according to claim 4 , wherein said two neighboring second portions differ from each other in a retracting quantity thereof from the outer periphery of the first substrate at the center portion in the peripheral direction.
6. A display device according to claim 4 , wherein the display panel is a liquid crystal display panel in which a liquid crystal material is filled between the first substrate and the second substrate.
7. A display device according to claim 2 , wherein a size of the first portion in the peripheral direction is set larger than a size of the second portion in the peripheral direction.
8. A display device according to claim 2 , wherein the adhesive material is a photo-curing resin.
9. A display device according to claim 2 , wherein the adhesive material has an open annular planar shape as viewed from the surface of the first substrate.
10. A display device according to claim 1 , wherein the plurality of second portions exhibits a substantially same retracting quantity from the outer periphery of the first substrate at the center portion of the second portion in the peripheral direction.
11. A display device according to claim 1 , wherein a size of the first portion in the peripheral direction and a size of the second portion in the peripheral direction are substantially equal to each other.
12. A display device according to claim 1 , wherein the adhesive material has a closed annular planar shape as viewed from the surface of the first substrate.