Display device including retardation control film

1 . A display device comprising:

a display panel comprising a substrate and a light emitting element disposed on the substrate, wherein the light emitting element generates a light;

an anti-reflection film comprising a phase retardation layer disposed on the light emitting element and a polarization layer disposed on the phase retardation layer;

a support plate disposed under the substrate of the display panel to support the display panel, wherein the support plate comprises a metal material;

a retardation control film disposed under the substrate of the display panel between the substrate of the display panel and the support plate to prevent light reflected by the support plate from passing through the polarization layer; and

a lower plate disposed between the support plate and the display panel,

wherein the substrate and the light emitting element of the display panel are disposed between the phase retardation layer and the retardation control film, and

the retardation control film is disposed between the display panel and the lower plate.

2 . The display device of claim 1 , wherein the retardation control film comprises a plurality of phase retardation layers sequentially stacked one on another.

3 . The display device of claim 1 , wherein the retardation control film comprises at least one selected from a polyester-based resin, a polyolefin-based resin, an acrylic-based resin, a polyurethane-based resin, a polyethersulfone-based resin, a polycarbonate-based resin, a polysulfone-based resin, and a polyether-based resin.

4 . The display device of claim 3 , wherein the retardation control film has a light transmittance equal to or greater than about 85%.

5 . The display device of claim 1 , wherein the display panel comprises a first non-folding area, a second non-folding area, and a folding area defined between the first non-folding area and the second non-folding area.

6 . The display device of claim 5 , wherein the retardation control film overlaps the first non-folding area, the second non-folding area, and the folding area.

7 . The display device of claim 5 , wherein the support plate comprises:

a first support plate disposed under the display panel to correspond to the first non-folding area; and

a second support plate disposed under the display panel to correspond to the second non-folding area and spaced apart from the first support plate.

8 . The display device of claim 7 , wherein

the lower plate comprises a bending portion overlapping the folding area.

9 . The display device of claim 1 , wherein the retardation control film has a thickness retardation in a range of about 0 nm to about 100 nm.

10 . The display device of claim 1 , wherein the lower plate comprises a metal material.

11 . The display device of claim 1 , wherein the phase retardation layer comprises:

a λ/2 phase retardation layer disposed between the polarization layer and the display panel; and

a λ/4 phase retardation layer disposed between the λ/2 phase retardation layer and the display panel.

12 . The display device of claim 1 , wherein the retardation control film has a reverse wavelength dispersibility.

13 . An electronic device comprising a folding area, which is foldable about an imaginary folding axis, the electronic device comprising:

a display panel comprising a substrate and a light emitting element disposed on the substrate, wherein the light emitting elements generates a light;

an anti-reflection film comprising a phase retardation layer disposed on the light emitting element and a polarization layer disposed on the phase retardation layer;

a support plate disposed under the substrate of the display panel to support the display panel, wherein the support plate comprises a metal material;

a retardation control film having a thickness retardation in a range of about 0 nm to about 100 nm and disposed under the substrate of the display panel between the substrate of the display panel and the support plate to prevent light reflected by the support plate from passing through the polarization layer; and

a lower plate disposed between the support plate and the display panel,

wherein the substrate and the light emitting element of the display panel are disposed between the phase retardation layer and the retardation control film, and

the retardation control film is disposed between the display panel and the lower plate.

14 . The electronic device of claim 13 , further comprising:

first and second non-folding areas adjacent to the folding area,

wherein the support plate comprises:

a first support plate disposed under the display panel to correspond to the first non-folding area; and

a second support plate disposed under the display panel to correspond to the second non-folding area and spaced apart from the first support plate.

15 . The electronic device of claim 14 , wherein

the lower plate comprises a bending portion overlapping the folding area.

16 . The electronic device of claim 13 , wherein the retardation control film has a thickness retardation in a range of about 0 nm to about 100 nm.

17 . The electronic device of claim 13 , wherein the lower plate comprises a metal material.

18 . The electronic device of claim 13 , wherein the phase retardation layer comprises:

a λ/2 phase retardation layer disposed between the polarization layer and the display panel; and

a λ/4 phase retardation layer disposed between the λ/2 phase retardation layer and the display panel.

19 . The electronic device of claim 13 , wherein the retardation control film has a reverse wavelength dispersibility.