Display device and manufacturing method thereof

1. A display device comprising:

a substrate having a first edge portion, a second edge portion, and a third edge portion;

a plurality of light-emitting elements located over the substrate and sandwiched between the first edge portion and the third edge portion;

a passivation film over the plurality of light-emitting elements;

a barrier layer over the passivation film, the barrier layer having a first sidewall along the first edge portion, a second sidewall along the second edge portion, and a third sidewall along the third edge portion; and

a touch sensor over the barrier layer,

wherein a first angle between a top surface of the substrate and a slope of the first sidewall is different from a second angle between the top surface and a slope of the second sidewall and is smaller than a third angle between the top surface and a slope of the third sidewall.

2. The display device according to claim 1 , further comprising a plurality of terminals over the substrate,

wherein the plurality of terminals is electrically connected to the plurality of light-emitting elements and arranged along the first edge portion, and

the first angle is smaller than the second angle.

3. The display device according to claim 2 ,

wherein the first angle is larger than 0° and equal to or smaller than 5°, and

the second angle is equal to or larger than 20° and equal to or smaller than 45°.

4. The display device according to claim 1 ,

wherein the passivation film comprises:

a first layer including an inorganic compound;

a second layer over the first layer, the second layer including an organic compound; and

a third layer over the second layer, the third layer including an inorganic compound, and

an upper side of a sidewall of the third layer is in contact with a bottom side of the first sidewall or a bottom surface of the barrier layer.

5. The display device according to claim 4 ,

wherein the organic compound is a polymer.

6. A display device comprising:

a substrate having a first edge portion, a second edge portion, and a third edge portion;

a plurality of pixels located over the substrate, sandwiched by the first edge portion and the third edge portion, and each including a transistor and a light-emitting element electrically connected to the transistor;

a passivation film over the plurality of pixels;

a barrier layer over the passivation film, the barrier layer having a first sidewall along the first edge portion, a second sidewall along the second edge portion, and a third sidewall along the third edge portion; and

a touch sensor over the barrier layer,

wherein a first angle between a top surface of the substrate and a slope of the first sidewall is different from a second angle between the top surface and a slope of the second sidewall and is smaller than a third angle between the top surface and the third sidewall.

7. The display device according to claim 6 , further comprising a plurality of terminals over the substrate,

wherein the plurality of terminals is electrically connected to the plurality of light-emitting elements and arranged along the first edge portion, and

the first angle is smaller than the second angle.

8. The display device according to claim 7 ,

wherein the first angle is larger than 0° and equal to or smaller than 5°, and

the second angle is equal to or larger than 20° and equal to or smaller than 45°.

9. The display device according to claim 6 ,

wherein the passivation film comprises:

a first layer including an inorganic compound;

a second layer over the first layer, the second layer including an organic compound; and

a third layer over the second layer, the third layer including an inorganic compound, and

an upper side of a sidewall of the third layer is in contact with a bottom side of the first sidewall or a bottom surface of the barrier layer.

10. The display device according to claim 9 ,

wherein the organic compound is a polymer.