Display device with block members having different heights

1. A display device, comprising:

a substrate including a display region and a peripheral region surrounding the display region;

an insulation layer on the substrate, the insulation layer being formed of an inorganic material;

a plurality of display structures in the display region;

a first block member in the peripheral region and surrounding the display structures;

a second block member spaced apart from the first block member in a first direction extending from the display region to the peripheral region, the second block member surrounding the first block member, the second block member having a first side wall that is adjacent to the first block member and a second side wall that is opposite to the first side wall;

a first encapsulation layer over the display structures, the first block member, and the second block member, wherein the first encapsulation layer is formed of an inorganic material;

a second encapsulation layer over the first encapsulation layer, the second encapsulation layer being formed of an organic material; and

a third encapsulation layer over the first and second encapsulation layers, the third encapsulation layer formed of an inorganic material,

wherein the first encapsulation layer is in direct contact with the second encapsulation layer on the second side wall of the second block member, and

wherein at least one of the first and second block members is in direct contact with the insulation layer.

2. The display device of claim 1 , wherein the first block member has a first height, and the second block member has a second height that is greater than the first height.

3. The display device of claim 2 , further comprising:

a third block member disposed in the peripheral region on the substrate.

4. The display device of claim 3 , wherein the third block member is spaced apart from the first block member in a second direction that is opposite to the first direction, and has the first height.

5. The display device of claim 4 , wherein an upper surface of the third block member is uneven.

6. The display device of claim 3 , wherein the third block member is spaced apart from the second block member in the first direction.

7. The display device of claim 1 , further comprising a third block member disposed in the peripheral region on the substrate, wherein the third block member is spaced apart from the first block member in a second direction that is opposite to the first direction, and

wherein the third block member has a first height, and each of the first and second block members has a second height that is greater than the first height.

8. The display device of claim 1 , wherein at least one of the first and second block members is in direct contact with the insulation layer.

9. The display device of claim 1 , wherein the insulation layer includes:

a gate insulation layer disposed on the substrate; and

an insulating interlayer disposed on the gate insulation layer.

10. The display device of claim 9 , wherein at least one of the first and second block members is in direct contact with the insulating interlayer.

11. The display device of claim 9 , further comprising:

a planarization layer disposed on the insulating interlayer; and

a pixel defining layer over the planarization layer.

12. The display device of claim 11 , wherein the second block member includes:

a lower block pattern disposed on the insulating interlayer; and

an upper block pattern over the lower block pattern.

13. The display device of claim 12 , wherein the upper block pattern covers the lower block pattern, and a portion of a lower surface of the upper block pattern is in direct contact with the insulating interlayer.

14. The display device of claim 12 , wherein an upper surface of the lower block pattern and an upper surface of the planarization layer are located at a same level.

15. The display device of claim 12 , wherein each of the display structures includes:

a lower electrode interposed between the planarization layer and the pixel defining layer;

a light emitting layer disposed on the lower electrode; and

an upper electrode disposed on the light emitting layer.

16. The display device of claim 15 , further comprising:

a first power supply voltage line disposed in the peripheral region on the insulating interlayer, the first power supply voltage line being spaced apart from the first block member in a direction extending from the peripheral region to the display region; and

a second power supply voltage line spaced apart from the first power supply voltage line in the direction,

wherein at least a portion of the first block member overlaps the first power supply voltage line.

17. The display device of claim 16 , wherein the upper electrode extends in the direction and is in direct contact with the first power supply voltage line in the peripheral region.

18. The display device of claim 1 , wherein an upper surface of the first block member is uneven.

19. A display device, comprising:

a substrate including a display region and a peripheral region surrounding the display region;

an insulation layer on the substrate, the insulation layer being formed of an inorganic material;

a plurality of display structures in the display region;

a first block member in the peripheral region and surrounding the display structures;

a second block member spaced apart from the first block member in a first direction extending from the display region to the peripheral region, the second block member surrounding the first block member, the second block member having a first side wall that is adjacent to the first block member and a second side wall that is opposite to the first side wall;

a first encapsulation layer over the display structures, the first block member, and the second block member, wherein the first encapsulation layer is formed of an inorganic material;

a second encapsulation layer over the first encapsulation layer, the second encapsulation layer being formed of an organic material; and

a third encapsulation layer over the first and second encapsulation layers, the third encapsulation layer formed of an inorganic material,

wherein the first encapsulation layer is in direct contact with the second encapsulation layer on the second side wall of the second block member,

wherein the insulation layer includes:

a gate insulation layer disposed on the substrate; and

an insulating interlayer disposed on the gate insulation layer,

wherein the display device further comprises:

a planarization layer disposed on the insulating interlayer; and

a pixel defining layer over the planarization layer, and

wherein the first block member has a first height, and the second block member has a second height that is greater than the first height, and

wherein the first height is greater than a height defined from an upper surface of the substrate to an upper surface of the pixel defining layer.

20. A display device, comprising:

a substrate including a display region and a peripheral region surrounding the display region;

an insulation layer on the substrate, the insulation layer being formed of an inorganic material;

a plurality of display structures in the display region;

a first block member in the peripheral region and surrounding the display structures;

a second block member spaced apart from the first block member in a first direction extending from the display region to the peripheral region, the second block member surrounding the first block member, the second block member having a first side wall that is adjacent to the display structure, a second side wall that is opposite to the first side wall and an upper surface that is located between the first side wall and the second side wall;

a first encapsulation layer over the display structures, the first block member, and the second block member, wherein the first encapsulation layer is formed of an inorganic material;

a second encapsulation layer over the first encapsulation layer, the second encapsulation layer being formed of an organic material; and

a third encapsulation layer over the first and second encapsulation layers, the third encapsulation layer formed of an inorganic material,

wherein the first encapsulation layer is in direct contact with the second encapsulation layer on the upper surface of the second block member, and

wherein at least one of the first and second block members is in direct contact with the insulation layer.