Support film, OLED display structure and manufacturing method thereof

1. A manufacturing method of an OLED display structure, comprising:

providing a support film such that the support film comprises a first adhesive material layer and a first base material layer stacked together, and a first release film between the first base material layer and the first adhesive material layer;

attaching the support film to an OLED display device layer, wherein the OLED display device layer comprises a display region and a bending region;

tearing off a portion of the first base material layer in the display region; and

attaching a second base material layer at a position on the first adhesive material layer corresponding to the display region where the portion of the first base material layer is torn-off, wherein the second base material layer is made of a different material from that of the first base material layer.

2. The manufacturing method of an OLED display structure of claim 1 , wherein

before tearing off the portion of the first base material layer in the display region, the manufacturing method of an OLED display structure further comprises:

cutting the first base material layer of the support film into: a first portion corresponding to the display region and a portion of the bending region, and a second portion corresponding to a remaining portion of the bending region; and

tearing off the first portion;

wherein the attaching a second base material layer at the position on the first adhesive material layer corresponding to the display region where the portion of the first base material layer is torn-off, comprises: attaching the second base material layer such that the second base material layer and the second portion of the first base material layer are spaced apart from each other by a distance.

3. The manufacturing method of an OLED display structure of claim 2 , further comprising:

forming a protective base material layer a side of the first adhesive material layer away from the first base material layer, and

forming a protective film on a side of the first base material layer away from the first adhesive material layer,

wherein before the attaching the support film to the OLED display device layer, the manufacturing method of an OLED display structure further comprises: tearing off the protective base material layer; and

wherein before the tearing off a portion of the first base material layer corresponding to the display region, the manufacturing method of an OLED display structure further comprises: tearing off the protective film.

4. The manufacturing method of an OLED display structure of claim 1 , further comprising:

forming a protective base material layer a side of the first adhesive material layer away from the first base material layer, and

forming a protective film on a side of the first base material layer away from the first adhesive material layer,

wherein before the attaching the support film to the OLED display device layer, the manufacturing method of an OLED display structure further comprises: tearing off the protective base material layer; and

wherein before the tearing off a portion of the first base material layer corresponding to the display region, the manufacturing method of an OLED display structure further comprises: tearing off the protective film.

5. The manufacturing method of an OLED display structure of claim 1 , wherein

the OLED display device layer comprises a functional film layer, a first optical adhesive layer and a window film layer sequentially arranged in the display region.

6. The manufacturing method of an OLED display structure of claim 1 , wherein

after attaching a second base material layer at the position on the first adhesive material layer corresponding to the display region where the portion of the first base material layer is torn-off, the manufacturing method of an OLED display structure further comprises:

attaching a heat dissipation member to the second base material layer on a side away from the OLED display device layer, and attaching a double-sided adhesive layer to the heat dissipation member on a side away from the OLED display device layer;

tearing off the remaining portion of the first base material layer; and

bending the bending region of the OLED display device layer such that the first adhesive material layer and the double-sided adhesive layer are adhered together;

wherein a second adhesive material layer is attached to an outside of a bent portion of the OLED display device layer corresponding to the bending region.

7. The manufacturing method of an OLED display structure of claim 1 , wherein

the first base material layer is made of polyethylene terephthalate, and

the second base material layer is made of metal or polymer.

8. The manufacturing method of an OLED display structure of claim 1 , wherein

the first base material layer has a thickness in a range of 25 μm to 100 μm.

9. The manufacturing method of an OLED display structure of claim 8 , wherein

the first base material layer has a thickness of 50 μm.

10. The manufacturing method of an OLED display structure of claim 1 , wherein

a material of the first release film comprises silicone oil;

a material of the first adhesive material layer comprises acrylic resin; and

a material of the first base material layer comprises polyethylene terephthalate.