Optical film and display device comprising same
The present specification relates to an optical film, and a display device including an optical film, comprising a dye or pigment absorbing at least some of a wavelength of 490 nm to 510 nm; having a transmission color of a D65 light source, a CIE standard illuminant, of −8<a*<8 and −8<b*<8, wherein a* indicates a direction the transmission color is leaned between red and green and b* indicates a direction the transmission color is leaned between yellow and blue; and satisfying the following Equations 1 and 2: T %(500 nm)< T %(530 nm), [Equation 1] [ T %(500 nm)×1.8]<[ T %(460 nm)+ T %(610 nm)] [Equation 2] wherein, in Equations 1 and 2, T % (A nm) is transmittance at a wavelength of A nm.
1. An optical film,
comprising a dye or pigment absorbing at least some of a wavelength of 490 nm to 510 nm;
having a transmission color of a D65 light source, a CIE standard illuminant, of −8<a*<8 and −8<b*<8, wherein a* indicates a direction the transmission color is leaned between red and green and b* indicates a direction the transmission color is leaned between yellow and blue; and
satisfying the following Equations 1 and 2,
wherein the dye or pigment is a compound represented by the following Chemical Formula 1:
T %(500 nm)< T %(530 nm), [Equation 1]
[ T %(500 nm)×1.8]<[ T %(460 nm)+ T % (610 nm)] [Equation 2]
wherein, in the Equations 1 and 2,
T % (A nm) is transmittance at a wavelength of A nm
in the Chemical Formula 1,
X is Zn; Co; Ni or Pd;
R1 to R6 and R8 to R13 are the same as or different from each other, and each independently hydrogen; deuterium; a halogen group; a nitrile group; a nitro group; —OC(═O) R; —(C═O)NR′R″; —(C═O)OR′″; —(C═O)Rx; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted aryl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted heteroaryloxy group; a substituted or unsubstituted alkylthio group; a substituted or unsubstituted arylthio group; a substituted or unsubstituted heteroarylthio group; or a substituted or unsubstituted heteroaryl group;
R7 and R14 are the same as or different from each other, and each independently hydrogen; a substituted or unsubstituted alkyl group; a substituted or unsubstituted aryl group; a substituted or unsubstituted heteroaryl group; a substituted or unsubstituted aryloxy group; a substituted or unsubstituted arylthio group; a substituted or unsubstituted heteroarylthio group; or a substituted or unsubstituted heteroaryloxy group;
R, R′, R″, R′″ and Rx are the same as or different from each other, and each independently hydrogen; a substituted or unsubstituted alkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted heterocyclic group; or a substituted or unsubstituted aryl group, or R′ and R″ bond to each other to form a ring; and
when R7 and R14 are hydrogen; a substituted or unsubstituted alkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group and R2, R5, R9 and R12 are —C(═O)OR′″, R′″ is a substituted or unsubstituted aryl group; a substituted or unsubstituted cycloalkyl group; a substituted alkyl group; or a branched unsubstituted alkyl group having 3 to 30 carbon atoms.
2. The optical film of claim 1 , wherein heat resistance reliability, moisture and heat resistance reliability and light resistance reliability of the optical film are each ΔY≤3% p,
the heat resistance reliability is a change in a transmission Y value of a D65 light source in a CIE XYZ color space measured after 500 hours at a wavelength of 380 nm to 780 nm and 80° C. from a transmission Y value of the optical film measured immediately after preparing the optical film, the change being expressed as a percentage;
the moisture and heat resistance reliability is a change in a transmission Y value of a D65 light source in a CIE XYZ color space measured after 500 hours at a wavelength of 380 nm to 780 nm, 60° C. and relative humidity of 90% from an initial transmission Y value measured immediately after preparing the optical film, the change being expressed as a percentage; and
the light resistance reliability is a change in a transmission Y value of a D65 light source in a CIE XYZ color space under a condition of a wavelength of 380 nm to 780 nm and 22,560,000 lux*hr expressed as a percentage.
3. The optical film of claim 1 , wherein the transmission color of a D65 light source, a CIE standard illuminant, is −8<a*<8 and −7<b*<8, wherein a* and b* are as defined in claim 1 .
4. The optical film of claim 1 , which is an adhesive film.
5. The optical film of claim 1 , further comprising a binder resin, and comprising the dye or pigment in 0.001 parts by weight to 5 parts by weight with respect to 100 parts by weight of the binder resin.
6. The optical film of claim 5 , wherein the binder resin is a styrene-based resin or elastomer, an urethane-based resin or elastomer, a polyolefin-based resin or elastomer, a polyoxyalkylene-based resin or elastomer, a polyester-based resin or elastomer, a polyvinyl chloride-based resin or elastomer, a polycarbonate-based resin or elastomer, a polyphenylene sulfide-based resin or elastomer, a polyamide-based resin or elastomer, an acrylate-based resin or elastomer, an epoxy-based resin or elastomer, a silicone-based resin or elastomer, or a fluorine-based resin or elastomer, or a mixture thereof.
7. An adhesive optical filter comprising:
the optical film of claim 1 ; and
a surface treatment layer.
8. A display device comprising the optical film of claim 1 .
9. The display device of claim 8 , comprising a display panel, wherein the optical film is provided on the display panel.
10. The display device of claim 9 , wherein the display panel is a spontaneous light emitting display panel or a non-spontaneous light emitting display panel.
11. The display device of claim 9 , wherein the display panel is an OLED panel;
the display device is an OLED device comprising an OLED panel; and the optical film is provided on one surface of the OLED panel.
12. The display device of claim 11 , wherein the OLED panel further comprises a white pixel.
13. A display device comprising the optical film of claim 2 .
14. A display device comprising the optical film of claim 3 .
15. A display device comprising the optical film of claim 5 .
16. A display device comprising the optical film of claim 6 .