OLED panel and image display device including the same
An organic light emitting diode (OLED) panel includes an OLED module layer, and a first adhesive layer formed on a surface of the OLED module layer. A neutral plane is formed at an interface between the first adhesive layer and the OLED module layer. A bending deformation and a stress of the OLED module layer may be avoided, and damages of the OLED module layer may be reduced.
1. An organic light emitting diode (OLED) panel, comprising:
an organic light emitting diode (OLED) module layer; and
a first adhesive layer formed on a surface of the OLED module layer; and
a neutral plane formed at an interface between the first adhesive layer and the OLED module layer;
wherein a thickness of the OLED module layer is in a range from 80 μm to 400 μm;
an elastic modulus of the OLED module layer is in a range from 1,000 MPa to 8,000 MPa;
a thickness of the first adhesive layer is in a range from 20 μm to 200 μm; and
an elastic modulus of the first adhesive layer is in a range from 0.01 MPa to 1 MPa.
2. The OLED panel of claim 1 , wherein the OLED module layer includes an OLED device comprising an anode, an organic layer comprised of an organic light emitting layer, a cathode and an encapsulation layer which are sequentially stacked.
3. The OLED panel of claim 1 , wherein the OLED module layer further includes a digitizer layer and a shielding layer.
4. The OLED panel of claim 1 , wherein the OLED module layer includes a touch sensor layer.
5. The OLED panel of claim 4 , wherein a thickness of the touch sensor layer is in a range from 10 μm to 80 μm; and
an elastic modulus of the touch sensor layer is in a range from 500 MPa to 6,000 MPa.
6. The OLED panel of claim 4 , wherein a thickness of the OLED module layer is in a range from 80 μm to 260 μm; and
an elastic modulus of the OLED module layer is in a range from 1,000 MPa to 8,000 MPa.
7. The OLED panel of claim 4 , wherein the OLED module layer further includes an encapsulation layer, and the touch sensor layer is formed on a surface of the encapsulation layer.
8. The OLED panel of claim 1 , further comprising a stack structure formed on the other surface of the first adhesive layer which is not in contact with the OLED module layer, wherein the stack structure includes an optical layer, a second adhesive layer and a window substrate.
9. The OLED panel of claim 8 , wherein a thickness of the stack structure is in a range from 60 μm to 500 μm; and
an elastic modulus of the stack structure is in a range from 200 MPa to 6,000 MPa.
10. The OLED panel of claim 8 , wherein the optical layer includes a stretching type polarizer or a coating type polarizer.
11. The OLED panel of claim 8 , wherein the stack structure further includes a touch sensor layer.
12. The OLED panel of claim 11 , wherein a thickness of the OLED module layer is in a range from 110 μm to 400 μm; and
an elastic modulus of the OLED module layer is in a range from 1,000 MPa to 8,000 MPa.
13. The OLED panel of claim 11 , wherein a thickness of the OLED module layer is in a range from 150 μm to 350 μm; and
an elastic modulus of the OLED module layer is in a range from 1,000 MPa to 8,000 MPa.
14. The OLED panel of claim 11 , wherein the touch sensor layer is formed on the other surface of the first adhesive layer which is not in contact with the OLED module layer.
15. The OLED panel of claim 11 , wherein the touch sensor layer is directly formed on the optical layer.
16. An image display device comprising the OLED panel of claim 1 .