Planarizing element for thermal printing of color filter

Abstract

A planarizing element is described for use in a thermal imaging process. The planarizing element includes a support; a planarizing layer comprising a crosslinkable binder having a weight average molecular weight of about 20,000 to about 110,000.

1 . A planarizing element comprising planarizing layer, wherein the planarizing layer comprises a crosslinkable binder, and wherein the crosslinkable binder has a weight average molecular weight of about 20,000 to about 110,000.  
   
   
       2 . The planarizing element of  claim 1  wherein the crosslinkable binder has a weight average molecular weight of about 30,000 to about 100,000.  
   
   
       3 . The planarizing element of  claim 1  wherein the crosslinkable binder has a weight average molecular weight of 50,000 to about 85,000.  
   
   
       4 . The planarizing element of  claim 1  wherein the crosslinkable binder is a polymer prepared by emulsion polymerization or solution polymerization.  
   
   
       5 . The planarizing element of  claim 4  wherein the crosslinkable binder is prepared from monomers selected from the group consisting of acrylic acid and esters, methacrylic acid and esters, and styrene.  
   
   
       6 . The planarizing element of  claim 1  further comprising coating aids, UV stabilizers, UV-filters, UV absorbers, small molecule crosslinking aids, plasticizers, flow additives, adhesion promoters, antistatic agents, and surfactants.  
   
   
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       28 . A liquid crystal display comprising a color filter, wherein the color filter is prepared using a thermal imaging process, and a planarizing element comprising a planarizing layer having a crosslinkable binder, having a weight average molecular weight of about 20,000 to about 110,000.  
   
   
       29 . The liquid crystal display of  claim 28  wherein the crosslinkable binder has a weight average molecular weight of about 30,000 to about 100,000.  
   
   
       30 . The liquid crystal display of  claim 29  wherein the crosslinkable binder has a weight average molecular weight of 50,000 to about 85,000.  
   
   
       31 . The liquid crystal display of  claim 28  comprising a color filter having a glass substrate.  
   
   
       32 . The liquid crystal display of  claim 31  wherein the glass substrate has a black matrix thereon.  
   
   
       33 . The liquid crystal display of  claim 32  comprising a color filter having at least three color images thereon.  
   
   
       34 . The liquid crystal display of  claim 33  wherein the color images are red, blue and green.