Recently, with an increasing demand for narrowing a frame, the seal line width is inclined to get finer, which deteriorates the seal adhesive strength. One or a plurality of grooves are formed in a resin layer that is a foundation of a seal area. A direction of forming a groove (lateral surface) is preferably in a vertical direction to the external stress. In a seal straight portion, a groove is preferably formed not only in a parallel direction to the seal but also in the vertical direction. In a seal corner portion, a groove is preferably formed in a shape curved convexly toward a direction of a display area (active area).
1. A display device comprising:
a first substrate including a resin layer;
a second substrate; and
a seal area for arranging a sealing material of sticking the first substrate and the second substrate,
wherein the seal area is arranged around an outer periphery of the first substrate,
the resin layer includes
a first groove, in an area overlapping with the seal area, and
a second groove arranged at an outer peripheral side from the first groove, and
each longitudinal direction of the first groove and the second groove is in parallel to the outer periphery,
wherein the resin layer is provided with a fourth groove in an area overlapping with the curved seal area, and
the fourth groove is formed in a shape curved convexly toward a center of the first substrate in a plan view.
2. The display device according to claim 1 ,
wherein the second substrate is provided with a first column spacer in an area overlapping with the seal area, and
the first column spacer is arranged in an area other than above the first and the second grooves.
3. The display device according to claim 1 ,
wherein the second substrate is provided with a second column spacer in an area overlapping with the seal area, and
the second column spacer is arranged above the first and the second grooves.
4. The display device according to claim 1 ,
wherein the resin layer is provided with a third groove between the first groove and the second groove,
the longitudinal direction of the third groove is in parallel to the outer periphery, and
the third groove is designed as crank shaped and having a continuous direction segment vertical to the longitudinal direction parallel to the outer periphery.
5. The display device according to claim 1 ,
wherein the first substrate is an array substrate and the second substrate is an opposite substrate.
6. The device according to claim 1 ,
wherein a liquid crystal layer is interposed between the first substrate and the second substrate.
7. A display device comprising:
a first substrate including a resin layer;
a second substrate; and
a seal area for arranging a sealing material of sticking the first substrate and the second substrate,
wherein the seal area is arranged around an outer periphery of the first substrate,
the resin layer is provided with a first groove in an area overlapping with the seal area, and
the first groove is designed as crank shape to have continuous direction segments parallel to and vertical to the longitudinal direction parallel to the outer periphery,
wherein the resin layer is provided with a fourth groove in the area overlapping with the curved seal area, and
the fourth groove is formed in a shape curved convexly toward a center of the first substrate in a plan view.
8. The display device according to claim 7 ,
wherein the resin layer is provided with a second groove arranged at the outer peripheral side from the first groove in the area overlapping with the seal area, and
the longitudinal direction of the second groove is in parallel to the outer periphery.
9. The display device according to claim 7 ,
wherein the resin layer is provided with a third groove arranged at the outer peripheral side from the first groove in the area overlapping with the seal area,
the longitudinal direction of the third groove is in parallel to the outer periphery, and
the third groove is designed as crank shaped and having a continuous direction segment vertical to the longitudinal direction parallel to the outer periphery.
10. The display device according to claim 7 ,
wherein the second substrate is provided with a first column spacer in the area overlapping with the seal area, and
the first column spacer is arranged in an area other than above the first and the second grooves.
11. The display device according to claim 7 ,
wherein the second substrate is provided with a second column spacer in the area overlapping with the seal area, and
the second column spacer is arranged above the first and the second grooves.
12. The display device according to claim 7 ,
wherein the first substrate is an array substrate and the second substrate is an opposite substrate.
13. The display device according to claim 7 ,
wherein a liquid crystal layer is interposed between the first substrate and the second substrate.