OLED panel and display device thereof

1. An organic light-emitting diode (OLED) panel, comprising:

a substrate having a light emitting region and a non-light emitting region; and

an organic flat layer, an anode, a first pixel definition layer, a light emitting layer, a cathode, and an encapsulation layer stacked on the substrate,

wherein, on the non-light emitting region, a second pixel definition layer is further disposed between the first pixel definition layer and the light encapsulation layer, and is disposed adjacent to a cutting location of the OLED panel; and the second pixel definition layer is configured as a plurality of inverted trapezoidal structures spaced apart from each other;

wherein the first pixel definition layer has patterned patterns spaced apart from each other, and the inverted trapezoidal structures correspond to the patterned patterns one to one;

wherein material of the second pixel definition layer is selected from a group consisting of epoxy resin, polyimide, and polymethyl methacrylate; and

wherein the first pixel definition layer, the second pixel definition layer and the encapsulation layer are sequentially stacked at a side wall of the OLED panel, and the first pixel definition layer covers a side surface of the anode and a side surface of the cathode to keep the anode and the cathode in a distance away from the side wall of the OLED panel to prevent the anode and the cathode from being exposed from the side wall of the OLED panel.

2. The OLED panel according to claim 1 , wherein each of the inverted trapezoidal structures has a first side and a second side opposite to each other, wherein a first lateral wall and a second lateral wall are disposed between the first side and the second side, the first side is parallel to the second side, the first side is adjacent to the first pixel definition layer, a length of the second side is greater than a length of the first side, and an included angle between the first side and the first or second lateral wall is an obtuse angle.

3. The OLED panel according to claim 2 , wherein the included angle ranges from 90 to 135 degrees.

4. The OLED panel according to claim 3 , wherein a distance between the first side and the second side ranges from 0.5 to 2 microns.

5. The OLED panel according to claim 1 , wherein the OLED panel further comprises a sealant disposed on both lateral sides of the OLED panel.

6. The OLED panel according to claim 1 , wherein the encapsulation layer comprises a first inorganic layer and a second inorganic layer disposed on the non-light emitting region; and the encapsulation layer comprises the first inorganic layer, an organic layer, and the second inorganic layer on the light emitting region.

7. The OLED panel according to claim 6 , wherein the organic layer has a thickness ranged from 2 to 16 microns.

8. An organic light-emitting diode (OLED) panel, comprising:

a substrate having a light emitting region and a non-light emitting region; and

an organic flat layer, an anode, a first pixel definition layer, a light emitting layer, a cathode, and an encapsulation layer stacked on the substrate,

wherein, on the non-light emitting region, a second pixel definition layer is further disposed between the first pixel definition layer and the encapsulation layer, and is disposed adjacent to a cutting location of the OLED panel; and the second pixel definition layer is constructed as a plurality of inverted trapezoidal structures spaced apart from each other; and

wherein the first pixel definition layer, the second pixel definition layer and the encapsulation layer are sequentially stacked at a side wall of the OLED panel, and the first pixel definition layer covers a side surface of the anode and a side surface of the cathode to keep the anode and the cathode in a distance away from the side wall of the OLED panel to prevent the anode and the cathode from being exposed from the side wall of the OLED panel.

9. The OLED panel according to claim 8 , wherein the first pixel definition layer has patterned patterns spaced apart from each other, and the inverted trapezoidal structures correspond to the patterned patterns one to one.

10. The OLED panel according to claim 9 , wherein each of the inverted trapezoidal structures has a first side and a second side opposite to each other, wherein a first lateral wall and a second lateral wall are disposed between the first side and the second side, the first side is parallel to the second side, the first side is adjacent to the first pixel definition layer, a length of the second side is greater than a length of the first side, and an included angle between the first side and the first or second lateral wall is an obtuse angle.

11. The OLED panel according to claim 10 , wherein the included angle ranges from 90 to 135 degrees.

12. The OLED panel according to claim 11 , wherein a distance between the first side and the second side ranges from 0.5 to 2 microns.

13. The OLED panel according to claim 8 , wherein the OLED panel further comprises a sealant disposed on both lateral sides of the OLED panel.

14. The OLED panel according to claim 8 , wherein the encapsulation layer comprises a first inorganic layer and a second inorganic layer disposed on the non-light emitting region; and the encapsulation layer comprises the first inorganic layer, an organic layer, and the second inorganic layer on the light emitting region.

15. The OLED panel according to claim 14 , wherein the organic layer has a thickness ranged from 2 to 16 microns.

16. The OLED panel according to claim 8 , wherein material of the polyimide, and polymethyl methacrylate.

17. An organic light-emitting diode (OLED) display device, comprising an OLED panel which comprises:

a substrate having a light emitting region and a non-light emitting region; and

an organic flat layer, an anode, a first pixel definition layer, a light emitting layer, a cathode, and an encapsulation layer stacked on the substrate,

wherein, on the non-light emitting region, a second pixel definition layer is further disposed between the first pixel definition layer and the encapsulation layer, and is disposed adjacent to a cutting location of the OLED panel; and the second pixel definition layer is constructed as a plurality of inverted trapezoidal structures spaced apart from each other; and

wherein the first pixel definition layer, the second pixel definition layer and the encapsulation layer are sequentially stacked at a side wall of the OLED panel, and the first pixel definition layer covers a side surface of the anode and a side surface of the cathode to keep the anode and the cathode in a distance away from the side wall of the OLED panel to prevent the anode and the cathode from being exposed from the side wall of the OLED panel.

18. The OLED display device according to claim 17 , wherein the first pixel definition layer has patterned patterns spaced apart from each other, and the inverted trapezoidal structures correspond to the patterned patterns one to one.

19. The OLED display device according to claim 18 , wherein each of the inverted trapezoidal structures has a first side and a second side opposite to each other, wherein a first lateral wall and a second lateral wall are disposed between the first side and the second side, the first side is parallel to the second side, the first side is adjacent to the first pixel definition layer, a length of the second side is greater than a length of the first side, and an included angle between the first side and the first or second lateral wall is an obtuse angle.

20. The OLED display device according to claim 19 , wherein the included angle ranges from 90 to 135 degrees.