Liquid crystal display, panel therefor, and manufacturing method thereof

Abstract

A display panel includes a substrate, a partition formed on the substrate and defining a plurality of openings, a plurality of color filters formed in the openings and having a substantially uniform thickness within each respective opening, and a spacer formed on the partition. The color filters and the spacer are formed through inkjet printing. The color filters have the substantially uniform thickness by the partition having a height which is greater than the thickness of the color filters during the inkjet printing. The height of the partition may be in a range of about 1.5 to about 2 times the thickness of the color filter.

1 . A display panel for a liquid crystal display, comprising:
 a substrate;   a partition disposed on the substrate and defining a plurality of an opening;   a plurality of color filters disposed in the openings, each of the color filters having a substantially uniform thickness within a respective opening; and   a spacer disposed on the partition,   wherein
 the color filters and the spacer are formed through inkjet printing, and 
 the color filters have the substantially uniform thickness by the partition having a height greater than the thickness of the color filters during the inkjet printing. 
   
   
   
       2 . The display panel of  claim 1 , wherein
 the height of the partition is in a range of about 1.5 to about 2 times the thickness of the color filters.   
   
   
       3 . The display panel of  claim 2 , wherein
 the partition is a light blocking member.   
   
   
       4 . The display panel of  claim 1 , further comprising
 an overcoat disposed on the partition and the color filters and having a planarized surface, the overcoat having the planarized surface by controlling material characteristics of an overcoat material used in inkjet printing.   
   
   
       5 . The display panel of  claim 4 , wherein
 a portion of the spacer is overlapped by the overcoat.   
   
   
       6 . The display panel of  claim 1 , wherein
 the partition is a light blocking member.   
   
   
       7 . The display panel of  claim 1 , wherein
 the spacer includes an acryl-based resin, cardo resin, or novolak resin.   
   
   
       8 . A liquid crystal display comprising:
 a first substrate;   a gate line and a data line disposed on the first substrate;   a thin film transistor connected to the gate line and the data line;   a pixel electrode connected to the thin film transistor;   a second substrate facing the first substrate;   a light blocking member disposed on the second substrate and defining a plurality of openings;   a color filter disposed in the openings and having a substantially uniform thickness within each respective opening;   a common electrode disposed on the color filter; and   a spacer disposed on the light blocking member,   wherein
 the color filter and the spacer are formed through inkjet printing, and 
 the color filter has the substantially uniform thickness by the light blocking member having a height greater than the thickness of the color filter during the inkjet printing. 
   
   
   
       9 . The liquid crystal display of  claim 8 , wherein
 the height of the light blocking member is in a range of about 1.5 to about 2 times the thickness of the color filter.   
   
   
       10 . The liquid crystal display of  claim 9 , further comprising
 an overcoat disposed on the light blocking member and the color filter, and having a planarized surface, the overcoat having the planarized surface by controlling material characteristics of an ink used in inkjet printing.   
   
   
       11 . The liquid crystal display of  claim 10 , wherein
 the overcoat is formed by using the ink having a viscosity of about 10 centipoise (cp) or less, and a surface tension of about 25 millinewtons per meter (mN/m) or less.   
   
   
       12 . A liquid crystal display comprising:
 a first substrate;   a gate line and a data line disposed on the first substrate;   a thin film transistor connected to the gate line and the data line;   a pixel electrode connected to the thin film transistor;   a second substrate facing the first substrate;   a light blocking member disposed on the second substrate and defining a plurality of openings;   a color filter disposed in the openings and having a substantially uniform thickness within each respective opening; and   a common electrode disposed on the color filter,   wherein the color filter has the substantially uniform thickness by the light blocking member having a height in a range of about 1.5 to about 2 times the thickness of the color filter during a forming of the color filter.   
   
   
       13 . A method for manufacturing a display panel for liquid crystal display, the method comprising:
 providing a substrate;   forming a light blocking member on the substrate, the light blocking member having a height;   forming a color filter having a substantially uniform thickness in a region defined by the light blocking member, the color filter formed through an inkjet printing method; and   forming a spacer on the light blocking member through the inkjet printing method,   wherein the color filter has the substantially uniform thickness by the height of the light blocking member being larger than the thickness of the color filter during the inkjet printing method.   
   
   
       14 . The method of  claim 13 , further comprising
 forming an overcoat having a planarized surface on the light blocking member and the color filter, the overcoat having the planarized surface by controlling material characteristics of an ink used in the inkjet printing method.   
   
   
       15 . The method of  claim 14 , wherein
 the overcoat is formed by using the ink having a viscosity of about 10 centipoise (cp) or less, and a surface tension of about 25 millinewtons per meter (mN/m) or less.   
   
   
       16 . The method of  claim 14 , wherein
 the overcoat is formed by using the ink having a viscosity of about 3 centipoise (cp) to about 5 centipoise (cp), and a surface tension of about 20 millinewtons per meter (mN/m) to about 23 millinewtons per meter (mN/m).   
   
   
       17 . The method of  claim 14 , further comprising
 forming a common electrode on the overcoat.   
   
   
       18 . The method of  claim 17 , wherein
 the forming of the common electrode includes:
 depositing a transparent conductive layer on the overcoat and the spacer, and 
 removing the transparent conductive layer on the spacer. 
   
   
   
       19 . The method of  claim 13 , wherein
 the height of the light blocking member is in a range of about 1.5 to about 2 times the thickness of the color filter.