Display panel and manufacturing method thereof

1. A manufacturing method of a display panel, comprising:

forming a flexible substrate on a display area and a welding area of a glass substrate, wherein the glass substrate comprises the display area, the welding area, and an edge area;

forming a switch array layer on the flexible substrate and the edge area of the glass substrate, and patterning the switch array layer, such that the switch array layer corresponding to the display area serves as a switching element, and the switch array layer corresponding to the welding area serves as a metal wire, and a portion of the switch array layer on the edge area is removed, wherein the switch array layer comprises an active layer; and

forming an organic light-emitting display layer on the switch array layer, a portion of the flexible substrate that is not covered by the switch array layer, and the edge area of the glass substrate, and removing a portion of the organic light-emitting display layer on the metal wire and the edge area such that the edge area of the glass substrate is free from any thin film layers;

in steps of forming the switch array layer on the flexible substrate and the edge area of the glass substrate, and patterning the switch array layer, such that the switch array layer corresponding to the display area serves as the switching element, and the switch array layer corresponding to the welding area serves as the metal wire, and the portion of the switch array layer on the edge area is removed, comprising:

forming the active layer on the flexible substrate and the edge area of the glass substrate; and

patterning the active layer, such that the active layer corresponding to the display area forms a channel pattern, and a portion of the active layer on the edge area is removed;

wherein the switch array layer further comprises a first metal layer, and after a step of patterning the active layer, such that the active layer corresponding to the display area forms the channel pattern, and the portion of the active layer on the edge area is removed, the method further comprises:

forming a first insulating layer on the channel pattern, another portion of the flexible substrate that is not covered by the channel pattern, and the edge area of the glass substrate;

forming the first metal layer on the first insulating layer; and

patterning the first metal layer, such that the first metal layer corresponding to the display area serves as a gate, and a portion of the first metal layer on the edge area is removed.

2. The manufacturing method of the display panel as claimed in claim 1 , wherein the switch array layer further comprises a second metal layer, and after a step of patterning the first metal layer, such that the first metal layer corresponding to the display area serves as the gate, and the portion of the first metal layer on the edge area is removed, the method further comprises:

forming a second insulating layer on the gate and a portion of the first insulating layer that is not covered by the gate;

forming the second metal layer on the second insulating layer; and

patterning the second metal layer, such that the second metal layer corresponding to the display area forms a metal portion, and a portion of the second metal layer corresponding to the edge area is removed.

3. The manufacturing method of the display panel as claimed in claim 2 , wherein the switch array layer further comprises a third insulating layer, and after a step of patterning the second metal layer, such that the second metal layer corresponding to the display area forms the metal portion, and the portion of the second metal layer corresponding to the edge area is removed, the method further comprises:

forming the third insulating layer on the metal portion and a portion of the second insulating layer that is not covered by the metal portion; and

patterning the third insulating layer, such that a buffer hole is formed on the third insulating layer corresponding to the welding area, and portions of the third insulating layer, the first insulating layer, and the second insulating layer corresponding to the edge area are removed.

4. The manufacturing method of the display panel as claimed in claim 3 , wherein the switch array layer further comprises a third metal layer, and after a step of patterning the third insulating layer, such that the buffer hole is formed on the third insulating layer corresponding to the welding area, and a portion of the third insulating layer corresponding to the edge area is removed, the method further comprises:

forming the third metal layer on the third insulating layer and the edge area of the glass substrate; and

patterning the third metal layer, such that the third metal layer corresponding to the display area servers as a source and a drain, and the metal wire is formed on the buffer hole, and a portion of the third metal layer on the edge area is removed.

5. The manufacturing method of the display panel as claimed in claim 4 , wherein the organic light-emitting display layer further comprises an anode, and after a step of forming the organic light-emitting display layer on the switch array layer, the portion of the flexible substrate that is not covered by the switch array layer, and the edge area of the glass substrate, and removing the portion of the organic light-emitting display layer on the metal wire and the edge area, the method further comprises:

forming a planarization layer on the source, the drain, the metal wire, another portion of the third insulating layer that is not covered by the source, the drain, and the metal wire, and the edge area of the glass substrate;

patterning the planarization layer, such that a connecting hole is formed, and a portion of the planarization layer on the metal wire and another portion of the planarization layer on the edge area of the glass substrate are removed;

forming a conductive layer on the planarization layer, the metal wire, and the edge area of the glass substrate; and

patterning the conductive layer, such that the conductive layer corresponding to the display area servers as the anode, and a portion of the conductive layer on the edge area is removed.

6. The manufacturing method of the display panel as claimed in claim 5 , after a step of patterning the conductive layer, such that the conductive layer corresponding to the display area servers as the anode, and the portion of the conductive layer on the edge area is removed, the method further comprising:

forming a pixel definition layer on the anode, another portion of the planarization layer that is not covered by the anode, and the edge area of the glass substrate;

patterning the pixel definition layer, such that the pixel definition layer corresponding to the display area forms pixel definition patterns, and a portion of the pixel definition layer on the edge area is removed; and

forming an organic light-emitting layer and a cathode between the pixel definition patterns.

7. The manufacturing method of the display panel as claimed in claim 1 , in a step of forming the flexible substrate on the display area and the welding area of the glass substrate, comprising:

forming the flexible substrate on a whole surface of the glass substrate; and

removing another portion of the flexible substrate on the edge area of the glass substrate.

8. A manufacturing method of a display panel, comprising:

forming a flexible substrate on a display area and a welding area of a glass substrate, wherein the glass substrate comprises the display area, the welding area, and an edge area;

forming a switch array layer on the flexible substrate and the edge area of the glass substrate, and patterning the switch array layer, such that the switch array layer corresponding to the display area serves as a switching element, and the switch array layer corresponding to the welding area serves as a metal wire, and a portion of the switch array layer on the edge area is removed; and

forming an organic light-emitting display layer on the switch array layer, a portion of the flexible substrate that is not covered by the switch array layer, and the edge area of the glass substrate, and removing a portion of the organic light-emitting display layer on the metal wire and the edge area;

wherein the switch array layer comprises an active layer, and in steps of forming the switch array layer on the flexible substrate and the edge area of the glass substrate, and patterning the switch array layer, such that the switch array layer corresponding to the display area serves as the switching element, and the switch array layer corresponding to the welding area serves as the metal wire, and the portion of the switch array layer on the edge area is removed, the method further comprises:

forming the active layer on the flexible substrate and the edge area of the glass substrate; and

patterning the active layer, such that the active layer corresponding to the display area forms a channel pattern, and a portion of the active layer on the edge area is removed;

wherein the switch array layer further comprises a first metal layer, and after a step of patterning the active layer, such that the active layer corresponding to the display area forms the channel pattern, and the portion of the active layer on the edge area is removed, the method further comprises:

forming a first insulating layer on the channel pattern, another portion of the flexible substrate that is not covered by the channel pattern, and the edge area of the glass substrate;

forming the first metal layer on the first insulating layer; and

patterning the first metal layer, such that the first metal layer corresponding to the display area serves as a gate, and a portion of the first metal layer on the edge area is removed.

9. The manufacturing method of the display panel as claimed in claim 8 , wherein the switch array layer further comprises a second metal layer, and after a step of patterning the first metal layer, such that the first metal layer corresponding to the display area serves as the gate, and the portion of the first metal layer on the edge area is removed, the method further comprises:

forming a second insulating layer on the gate and a portion of the first insulating layer that is not covered by the gate;

forming the second metal layer on the second insulating layer; and

patterning the second metal layer, such that the second metal layer corresponding to the display area forms a metal portion, and a portion of the second metal layer corresponding to the edge area is removed.

10. The manufacturing method of the display panel as claimed in claim 9 , wherein the switch array layer further comprises a third insulating layer, and after a step of patterning the second metal layer, such that the second metal layer corresponding to the display area forms the metal portion, and the portion of the second metal layer corresponding to the edge area is removed, the method further comprises:

forming the third insulating layer on the metal portion and a portion of the second insulating layer that is not covered by the metal portion; and

patterning the third insulating layer, such that a buffer hole is formed on the third insulating layer corresponding to the welding area, and portions of the third insulating layer, the first insulating layer, and the second insulating layer corresponding to the edge area are removed.

11. The manufacturing method of the display panel as claimed in claim 10 , wherein the switch array layer further comprises a third metal layer, and after a step of patterning the third insulating layer, such that the buffer hole is formed on the third insulating layer corresponding to the welding area, and a portion of the third insulating layer corresponding to the edge area is removed, the method further comprises:

forming the third metal layer on the third insulating layer and the edge area of the glass substrate; and

patterning the third metal layer, such that the third metal layer corresponding to the display area servers as a source and a drain, and the metal wire is formed on the buffer hole, and a portion of the third metal layer on the edge area is removed.

12. The manufacturing method of the display panel as claimed in claim 11 , wherein the organic light-emitting display layer further comprises an anode, and after a step of forming the organic light-emitting display layer on the switch array layer, the portion of the flexible substrate that is not covered by the switch array layer, and the edge area of the glass substrate, and removing the portion of the organic light-emitting display layer on the metal wire and the edge area, the method further comprises:

forming a planarization layer on the source, the drain, the metal wire, another portion of the third insulating layer that is not covered by the source, the drain, and the metal wire, and the edge area of the glass substrate;

patterning the planarization layer, such that a connecting hole is formed, and a portion of the planarization layer on the metal wire and another portion of the planarization layer on the edge area of the glass substrate are removed;

forming a conductive layer on the planarization layer, the metal wire, and the edge area of the glass substrate; and

patterning the conductive layer, such that the conductive layer corresponding to the display area servers as the anode, and a portion of the conductive layer on the edge area is removed.

13. The manufacturing method of the display panel as claimed in claim 8 , in a step of forming the flexible substrate on the display area and the welding area of the glass substrate, comprising:

forming the flexible substrate on a whole surface of the glass substrate; and

removing another portion of the flexible substrate on the edge area of the glass substrate.