Polarizing film for 3D HUD and display device for 3D HUD including the same

1 . A polarizing film included in a three-dimensional (3D) head-up display (HUD), comprising:

a polarizer layer;

a first protective layer on a first surface of the polarizer layer; and

a second protective layer on a second surface of the polarizer layer opposite to the first surface,

wherein a shrinkage rate of the polarizing film being less than or equal to 0.15% in a transverse direction based on being at a temperature of 105° C. for 500 hours,

wherein the first protective layer and the second protective layer comprise polymethyl methacrylate (PMMA),

wherein a thickness of the polarizer layer is 10 micrometers (μm) to 20 μm, and

wherein a crosstalk of the lenticular lens is less than or equal to 2.0% based on being provided at a temperature of 105° C. for 500 hours.

2 . The polarizing film of claim 1 , wherein the polarizer layer comprises polyvinyl alcohol (PVA).

3 . The polarizing film of claim 1 , wherein the polarizer layer is formed using a uniaxially stretched PVA film.

4 . The polarizing film of claim 1 , wherein the polarizer layer is deposited with an iodine dye.

5 . The polarizing film of claim 1 , wherein the polarizer layer further comprises at least one of a thermal stabilizer, an ultraviolet (UV) stabilizer, and an antioxidant.

6 . The polarizing film of claim 1 , wherein the first protective layer further comprises tri-acetyl cellulose (TAC).

7 . The polarizing film of claim 1 , wherein a thickness of the first protective layer is 30 μm to 50 μm.

8 . The polarizing film of claim 1 , wherein the second protective layer further comprises at least one of polycarbonate (PC) and cyclic olefin copolymer (COC).

9 . The polarizing film of claim 1 , wherein a thickness of the second protective layer is 20 μm to 40 μm.

10 . A display device included in a three-dimensional (3D) head-up display (HUD), comprising:

a transparent substrate;

a polarizing film on the transparent substrate; and

a lenticular lens on the polarizing film,

wherein the polarizing film comprises:

a polarizer layer;

a first protective layer on a first surface of the polarizer layer; and

a second protective layer on a second surface of the polarizer layer opposite to the first surface,

wherein the first protective layer and the second protective layer comprise polymethyl methacrylate (PMMA),

wherein the lenticular lens comprises:

an adhesive layer;

a base substrate on the adhesive layer; and

a patterned layer on the base substrate opposite to the adhesive layer,

wherein a shrinkage rate of the polarizing film being less than or equal to 0.15% in a transverse direction based on being at a temperature of 105° C. for 500 hours,

wherein a thickness of the polarizer layer is 10 micrometers (μm) to 20 μm,

wherein a shrinkage rate of the lenticular lens is less than or equal to 0.05% in a transverse direction based on being provided at a temperature of 105° C. for 500 hours, and

wherein a crosstalk of the lenticular lens is less than or equal to 2.0% based on being provided at a temperature of 105° C. for 500 hours.

11 . The display device of claim 10 , wherein the first protective layer further comprises tri-acetyl cellulose (TAC),

wherein the second protective layer further comprises at least one of polycarbonate (PC) and cyclic olefin copolymer (COC),

wherein the first protective layer is in contact with the lenticular lens, and

wherein the second protective layer is in contact with the transparent substrate.

12 . A transportation device comprising:

a three-dimensional (3D) head-up display (HUD) comprising a display device, the display device comprising:

a transparent substrate;

a polarizing film on the transparent substrate; and

a lenticular lens on the polarizing film,

wherein the polarizing film comprises:

a polarizer layer;

a first protective layer on a first surface of the polarizer layer; and

a second protective layer on a second surface of the polarizer layer opposite to the first surface,

wherein the first protective layer and the second protective layer comprise polymethyl methacrylate (PMMA),

wherein the lenticular lens comprises:

an adhesive layer;

a base substrate on the adhesive layer; and

a patterned layer on the base substrate opposite to the adhesive layer,

wherein a shrinkage rate of the polarizing film being less than or equal to 0.15% in a transverse direction based on being at a temperature of 105° C. for 500 hours,

wherein a thickness of the polarizer layer is 10 micrometers (μm) to 20 μm,

wherein a shrinkage rate of the lenticular lens is less than or equal to 0.05% in a transverse direction based on being provided at a temperature of 105° C. for 500 hours, and

wherein a crosstalk of the lenticular lens is less than or equal to 2.0% based on being provided at a temperature of 105° C. for 500 hours.

13 . The transportation device of claim 12 , wherein the first protective layer further comprises tri-acetyl cellulose (TAC),

wherein the second protective layer further comprises at least one of polycarbonate (PC) and cyclic olefin copolymer (COC),

wherein the first protective layer is in contact with the lenticular lens, and

wherein the second protective layer is in contact with the transparent substrate.