Optical layered body

Abstract

Provided is an optical laminate having the following feature: when the optical laminate is used in an image display apparatus, the optical laminate can express a sufficient brightness, can express a satisfactory hue, and can achieve a cost reduction while suppressing a reflectance. The optical laminate of the present invention includes: a wavelength conversion layer; and an absorption layer arranged on one side of the wavelength conversion layer, wherein the absorption layer has an absorption peak in a wavelength band in a range of from 580 nm to 610 nm, and wherein the absorption layer contains a compound x represented by the general formula (I) or the general formula (II).

1 . A optical laminate, comprising:
 a wavelength conversion layer; and   an absorption layer arranged on one side of the wavelength conversion layer,   wherein the absorption layer has an absorption peak in a wavelength band in a range of from 580 nm to 610 nm, and   wherein the absorption layer contains a compound X represented by the following general formula (I) or general formula (II):   
       
         
           
           
               
               
           
         
       
       in the formula (I),
 R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8  each independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 or more and 20 or less carbon atoms, a substituent represented by the formula (a), or a substituent represented by the formula (b), 
 R 1  and R 2  form a saturated cyclic skeleton including 5 or 6 carbon atoms, and R 3 , R 4 , R 5 , R 6 , R 7 , and R 8  each independently represent a hydrogen atom, a halogen atom, which is preferably Cl, a substituted or unsubstituted alkyl group having 1 or more and 20 or less carbon atoms, a substituent represented by the formula (a), or a substituent represented by the formula (b), 
 R 2  and R 3  form a saturated cyclic skeleton including 5 to 7 carbon atoms, and R 1 , R 4 , R 5 , R 6 , R 7 , and R 8  each independently represent a hydrogen atom, a halogen atom, which is preferably Cl, a substituted or unsubstituted alkyl group having 1 or more and 20 or less carbon atoms, a substituent represented by the formula (a), or a substituent represented by the formula (b), 
 R 5  and R 6  form a saturated cyclic skeleton including 5 or 6 carbon atoms, and R 1 , R 2 , R 3 , R 4 , R 7 , and R 8  each independently represent a hydrogen atom, a halogen atom, which is preferably Cl, a substituted or unsubstituted alkyl group having 1 or more and 20 or less carbon atoms, a substituent represented by the formula (a), or a substituent represented by the formula (b), 
 R 6  and R 7  form a saturated cyclic skeleton including 5 to 7 carbon atoms, and R 1 , R 2 , R 3 , R 4 , R 5 , and R 8  each independently represent a hydrogen atom, a halogen atom, which is preferably Cl, a substituted or unsubstituted alkyl group having 1 or more and 20 or less carbon atoms, a substituent represented by the formula (a), or a substituent represented by the formula (b), 
 R 1  and R 2  form a saturated cyclic skeleton including 5 or 6 carbon atoms, R 5  and R 6  form a saturated cyclic skeleton including 5 or 6 carbon atoms, and R 3 , R 4 , R 7 , and R 8  each independently represent a hydrogen atom, a halogen atom, which is preferably Cl, a substituted or unsubstituted alkyl group having 1 or more and 20 or less carbon atoms, a substituent represented by the formula (a), or a substituent represented by the formula (b), or 
 R 2  and R 3  form a saturated cyclic skeleton including 5 to 7 carbon atoms, R 6  and R 7  form a saturated cyclic skeleton including 5 to 7 carbon atoms, and R 1 , R 4 , R 5 , and R 8  each independently represent a hydrogen atom, a halogen atom, which is preferably Cl, a substituted or unsubstituted alkyl group having 1 or more and 20 or less carbon atoms, a substituent represented by the formula (a), or a substituent represented by the formula (b); and 
 in the formula (II), R 4  and R 8  each independently represent a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 or more and 20 or less carbon atoms. 
 
     
     
         2 . The optical laminate according to  claim 1 , wherein the optical laminate is free of a polarizing plate on a side of the absorption layer opposite to the wavelength conversion layer. 
     
     
         3 . The optical laminate according to  claim 1 , wherein the wavelength conversion layer contains quantum dots or a phosphor as a wavelength conversion material. 
     
     
         4 . The optical laminate according to  claim 1 , wherein the wavelength conversion layer is a color filter. 
     
     
         5 . An image display apparatus, comprising the optical laminate of  claim 1 . 
     
     
         6 . The image display apparatus according to  claim 5 , wherein the image display apparatus comprises a liquid crystal panel including the optical laminate of  claim 1 , and a backlight. 
     
     
         7 . The image display apparatus according to  claim 6 , wherein the liquid crystal panel includes the absorption layer, the wavelength conversion layer, a viewer-side polarizing plate, a liquid crystal cell, and a backlight-side polarizing plate in the stated order from a viewer side.