OPTICAL MEMBER AND DISPLAY APPARATUS COMPRISING OPTICAL MEMBER

1 . An optical member comprising:

an adhesive layer;

a transmittance control layer formed on an upper surface of the adhesive layer, the transmittance control layer comprising a (meth)acrylic copolymer and a dye mixture, the dye mixture comprising a first dye having a maximum absorption wavelength from 400 nm to 440 nm, a second dye having a maximum absorption wavelength from 480 nm to 520 nm, a third dye having a maximum absorption wavelength from 570 nm to 610 nm, and a fourth dye having a maximum absorption wavelength from 650 to 700 nm; and

a base film formed on an upper surface of the transmittance control layer,

wherein the (meth)acrylic copolymer comprises a cycloaliphatic group-containing (meth)acrylic copolymer having a glass transition temperature from 50° C. to 150° C., and

wherein the cycloaliphatic group-containing (meth)acrylic copolymer comprises from 35 wt % to 70 wt % of a cycloaliphatic group-containing (meth)acrylic monomer.

2 . The optical member as claimed in claim 1 , wherein the cycloaliphatic group-containing (meth)acrylic monomer comprises a (meth)acrylic acid ester having a monocyclic or bicyclic C 5 to C 20 cycloaliphatic group.

3 . The optical member as claimed in claim 1 , wherein the cycloaliphatic group-containing (meth)acrylic monomer comprises at least one of cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, dicyclopentanyl (meth)acrylate, methylcyclohexyl (meth)acrylate, or dicyclopentenyl (meth)acrylate.

4 . The optical member as claimed in claim 1 , wherein the cycloaliphatic group-containing (meth)acrylic copolymer further comprises a second monomer having a homopolymer glass transition temperature of equal to or greater than 50° C.

5 . The optical member as claimed in claim 4 , wherein the second monomer comprises an alkyl group-containing (meth)acrylic monomer.

6 . The optical member as claimed in claim 4 , wherein the cycloaliphatic group-containing (meth)acrylic copolymer comprises equal to or greater than 95 wt % of collectively the cycloaliphatic group-containing (meth)acrylic monomer and the second monomer.

7 . The optical member as claimed in claim 1 , wherein the first dye is a dialkoxy group-substituted porphyrin dye.

8 . The optical member as claimed in claim 1 , wherein the first dye comprises a dye represented by Formula 2:

9 . The optical member as claimed in claim 1 , wherein the second dye comprises a BODIPY dye.

10 . The optical member as claimed in claim 9 , wherein the BODIPY dye comprises a dye represented by Formula 3:

11 . The optical member as claimed in claim 1 , wherein the third dye comprises a tetraazaporphyrin dye.

12 . The optical member as claimed in claim 1 , wherein the fourth dye comprises a sulfonamide-substituted copper complex dye.

13 . The optical member as claimed in claim 12 , wherein the sulfonamide-substituted copper complex dye comprises a dye represented by Formula 4:

14 . The optical member as claimed in claim 1 , wherein the dye mixture comprises:

from 0.001 wt % to 5 wt % of the first dye;

from 0.001 wt % to 5 wt % of the second dye;

from 0.001 wt % to 5 wt % of the third dye; and

from 0.001 wt % to 5 wt % of the fourth dye.

15 . The optical member as claimed in claim 1 , wherein the base film is in an absence of an antireflection layer.

16 . The optical member as claimed in claim 1 , wherein the adhesive layer comprises a UV absorber.

17 . An optical display apparatus comprising the optical member as claimed in claim 1 .

18 . The optical display apparatus as claimed in claim 17 , wherein the optical display apparatus is in an absence of a polarizing plate.