Display device

1. A display device, comprising:

a first substrate, the first substrate comprising a first relief groove;

a second substrate, the second substrate comprising a second relief groove; and

a sealant,

wherein the sealant is between the first substrate and the second substrate so as to seal the first substrate and the second substrate,

wherein the sealant is spaced apart from an outer edge of the first substrate and an outer edge the second substrate,

wherein the first relief groove is between the sealant and the outer edge of the first substrate,

wherein the second relief groove is between the sealant and the outer edge of the second substrate,

wherein the first relief groove comprises a first inner relief groove in an inner surface of the first substrate facing the second substrate and a first outer relief groove in an outer surface of the first substrate facing away from the second substrate, and

wherein the second relief groove comprises a second inner relief groove in an inner surface of the second substrate facing the first substrate and a second outer relief groove in an outer surface of the second substrate facing away from the first substrate.

2. The display device according to claim 1 ,

wherein in an extending plane of the first substrate, a first size of a cross section of the first inner relief groove decreases from the inner surface of the first substrate to the outer surface of the first substrate, and

wherein a second size of a cross section of the first outer relief groove increases from the outer surface of the first substrate to the inner surface of the first substrate, and

wherein in an extending plane of the second substrate, a third size of a cross section of the second inner relief groove decreases from the inner surface of the second substrate to the outer surface of the second substrate, and

wherein a fourth size of a cross section of the second outer relief groove increases from the outer surface of the second substrate to the inner surface of the second substrate.

3. The display device according to claim 2 ,

wherein in a plane perpendicular to the extending plane of the first substrate, the first inner relief groove and the first outer relief groove have a trapezoid cross section, and

wherein in a plane perpendicular to the extending plane of the second substrate, the second inner relief groove and the second outer relief groove have a trapezoid cross section.

4. The display device according to claim 1 ,

wherein the first inner relief groove and the first outer relief groove are spaced apart in a first direction of the first substrate, and

wherein the second inner relief groove and the second outer relief groove are spaced apart in a second direction of the second substrate.

5. The display device according to claim 4 ,

wherein the first inner relief groove is closer to the outer edge of the first substrate than the first outer relief groove, and

wherein the second inner relief groove is closer to the outer edge of the second substrate than the second outer relief groove.

6. The display device according to claim 1 ,

wherein the sealant extends along a perimeter of the second substrate and a perimeter the first substrate,

wherein the first relief groove extends along the perimeter of the first substrate, and

wherein the second relief groove extends along the perimeter of the second substrate.

7. The display device according to claim 1 ,

wherein the first relief groove is adjacent to a first central position between the sealant and the outer edge of the first substrate, and

wherein the second relief groove is adjacent to a second central position between the sealant and the outer edge of the second substrate.

8. The display device according to claim 1 ,

wherein the first substrate comprises a color filter substrate, and

wherein the second substrate comprises a thin film transistor substrate.

9. The display device according to claim 1 ,

wherein the display device comprises an active matrix organic light emitting diode (AMOLED) panel.