OLED panel bottom protection film, and organic light-emitting display device comprising same
A bottom protection film for an OLED panel is provided. More particularly, a bottom protection film for an OLED panel, which has excellent alignment process workability and excellent adhesion to an OLED panel, and is capable of preventing static electricity through an antistatic treatment and preventing an electrical short circuit at the same time, and an organic light-emitting display device including the bottom protection film are provided.
1. A bottom protection film for an OLED panel, comprising:
a base film comprising a first adhesive layer disposed on an upper surface of a first base material;
a carrier film comprising a second adhesive layer adhered to a lower surface of the first base material and a second base material adhered to a lower surface of the second adhesive layer; and
a liner film adhered utilizinq the first adhesive layer,
wherein the liner film, the first base material, the first adhesive layer, the second base material, and the second adhesive layer all satisfy Condition (1) and Condition (2) below:
100
≤
a
1
A
,
(
1
)
23
≤
a
3
b
3
+
c
3
,
b
3
c
3
<
1
,
(
2
)
where, A denotes the average of the other values except for a maximum value and a minimum value of surface resistances from among a 2 , b 1 , b 2 , c 1 , and c 2 , and a 1 denotes a surface resistance (Ω/sq) of the first adhesive layer, a 2 denotes a surface resistance (Ω/sq) of the first base material, b 1 and b 2 respectively denote surface resistances (Ω/sq) of upper and lower surfaces of the liner film, c 1 denotes a surface resistance (Ω/sq) of the second adhesive layer, and c 2 denotes a surface resistance (Ω/sq) of the second base material, and
a 3 denotes adhesion (gf/in) of the base film, b 3 denotes a release force (gf/in) of the liner film, and c 3 denotes an exfoliation force (gf/in) of the carrier film.
2. The bottom protection film for an OLED panel of claim 1 , wherein the liner film, the first base material, the first adhesive layer, the second base material, and the second adhesive layer all satisfy Condition (3) and Condition (4) below:
10
3
≤
a
1
A
≤
10
5
,
(
3
)
30
≤
a
3
b
3
+
c
3
≤
560
,
0.3
≤
b
3
c
3
≤
0.9
.
(
4
)
3. The bottom protection film for an OLED panel of claim 1 , wherein a surface resistance of the first adhesive layer is 1.0×10 10 to 1.0×10 12 Ω/sq,
a surface resistance of the first base material is 1.0×10 5 to 1.0×10 9 Ω/sq, and
surface resistances of the upper and lower surfaces of the liner film are each 1.0×10 5 to 1.0×10 9 Ω/sq, and
surface resistances of the second adhesive layer and the second base material are each 1.0×10 5 to 1.0×10 9 Ω/sq.
4. The bottom protection film for an OLED panel of claim 1 , wherein the liner film has a release force of 5 gf/in or less.
5. The bottom protection film for an OLED panel of claim 1 , wherein adhesion of the first adhesive layer measured by utilizing a measurement method below is 250 gf/in or higher:
wherein in the measurement method, the first adhesive layer is adhered to glass, and after 24 hours, an adhesion of the first adhesive layer is measured when the first adhesive layer is exfoliated at 180° at a rate of 5 mm per second.
6. The bottom protection film for an OLED panel of claim 1 , wherein an exfoliation force between the base film and the carrier film is 3 to 10 gf/in.
7. The bottom protection film for an OLED panel of claim 1 , wherein the first base material and the second base material are each a PET base material, and
the first adhesive layer and the second adhesive layer are acrylic adhesive layers.
8. The bottom protection film for an OLED panel of claim 1 , wherein a lower surface of the liner film is silicon release-treated.
9. The bottom protection film for an OLED panel of claim 1 , wherein at least one surface of each of the liner film, the first base material, and the second base material is antistatic treated.
10. The bottom protection film for an OLED panel of claim 1 , wherein the first adhesive layer and the second adhesive layer comprise an antistatic agent.
11. The bottom protection film for an OLED panel of claim 1 , wherein the first adhesive layer has a thickness of 10 to 30 μm, and the first base material has a thickness of 65 to 140 μm.
12. The bottom protection film for an OLED panel of claim 1 , wherein the liner film has a thickness of 55 to 95 μm,
wherein the second adhesive layer has a thickness of 1 to 10 μm, and
wherein the second base material has a thickness of 20 to 60 μm.
13. A method of applying a bottom protection film for an OLED panel, the method comprising:
exfoliating a liner film from the bottom protection film;
attaching, to the OLED panel, a base film and a carrier film, from which the liner film is exfoliated; and
exfoliating the carrier film from the base film and the carrier film that are attached to the OLED panel,
wherein the bottom protection film comprises:
the base film comprising a first adhesive layer on an upper surface of a first base material;
the carrier film comprising a second adhesive layer adhered to a lower surface of the first base material and a second base material adhered to a lower surface of the second adhesive layer; and
a liner film adhered utilizing the first adhesive layer,
wherein the liner film, the first base material, the first adhesive layer, the second base material, and the second adhesive layer all satisfy Condition (1) and Condition (2) below,
100
≤
a
1
A
,
(
1
)
23
≤
a
3
b
3
+
c
3
,
b
3
c
3
<
1
,
(
2
)
where, A denotes the average of the other values except for a maximum value and a minimum value of surface resistances from among a 2 , b 1 , b 2 , c 1 , and c 2 , and a 1 denotes a surface resistance (Ω/sq) of the first adhesive layer, a 2 denotes a surface resistance (Ω/sq) of the first base material, b 1 and b 2 respectively denote surface resistance (Ω/sq) of upper and lower surfaces of the liner film, c 1 denotes a surface resistance (Ω/sq) of the second adhesive layer, and c 2 denotes a surface resistance (Ω/sq) of the second base material, and
a 3 denotes adhesion (gf/in) of the base film, b 3 denotes a release force (gf/in) of the liner film, and c 3 denotes an exfoliation force (gf/in) of the carrier film.
14. An organic light-emitting display device comprising a base film and an OLED panel,
wherein the OLED panel comprises a substrate and an organic light-emitting device on the substrate, and
the base film comprises a base material and an adhesive layer on an upper surface of the base material, and
wherein a surface resistance of the adhesive layer is 1.0×10 10 to 1.0×10 12 Ω/sq, and
a surface resistance of the base material is 1.0×10 5 to 1.0×10 9 Ω/sq.
15. The organic light-emitting display device of claim 14 , wherein an adhesion of the adhesive layer measured by utilizing a measurement method below is 250 gf/in or higher:
wherein in the measurement method, the adhesive layer was adhered to glass, and after 24 hours, an adhesion of the adhesive layer was measured when the adhesive layer was exfoliated at 180° at a rate of 5 mm per second.
16. The organic light-emitting display device of claim 14 , wherein the base material is a PET base material, and
the adhesive layer is an acrylic adhesive layer.
17. The organic light-emitting display device of claim 14 , wherein at least one surface of the base material is antistatic treated.
18. The organic light-emitting display device of claim 14 , wherein the adhesive layer comprises an antistatic agent.
19. The organic light-emitting display device of claim 14 , wherein the adhesive layer has a thickness of 10 to 30 μm, and the base material has a thickness of 65 to 140 μm.
20. The organic light-emitting display device of claim 14 , wherein the adhesive layer comprises polybutyl methacrylate and a pyridine antistatic agent,
wherein a thin film comprising poly(3,4-ethylene dioxythiophene)-polystyrene sulfonate (PEDOT/PSS) is coated on a lower surface of the base material.