APPARATUS TO PRINT PRINTING PATTERNS USING INKJET TECHNIQUE AND METHOD THEREOF
An apparatus to print printing patterns using an inkjet technique and a method thereof. The apparatus includes an inkjet head to eject ink on a substrate to form the printing patterns, and a solvent coating unit disposed on at least one side of the inkjet head to uniformize a solvent atmosphere formed around the printing patterns during a drying of the ink. The solvent coating unit coats a solvent layer on the substrate to surround the printing patterns formed on an edge of the substrate.
1 . An apparatus to print printing patterns on a substrate using an inkjet technique, the apparatus comprising:
an inkjet head to eject ink on the substrate to form the printing patterns; and
a solvent coating unit disposed on at least one side of the inkjet head to uniformize a solvent atmosphere formed around the printing patterns during a drying of the ink, the solvent coating unit to coat a solvent layer on the substrate to surround the printing patterns formed on an edge of the substrate.
2 . The apparatus of claim 1 , wherein the solvent layer coated by the solvent coating unit comprises a same solvent as a solvent contained in the ink used to form the printing patterns.
3 . The apparatus of claim 1 , wherein the solvent layer formed on the substrate has a width at least twice a length of the printing pattern.
4 . The apparatus of claim 3 , wherein the solvent layer has a width at least ten times a length of the printing pattern.
5 . The apparatus of claim 1 , wherein the solvent layer is coated while the inkjet head is printing the printing patterns on the edge of the substrate.
6 . The apparatus of claim 1 , wherein the solvent coating unit is installed on at least one side of the inkjet head to be capable of moving vertically.
7 . The apparatus of claim 1 , wherein the inkjet head is one of a piezoelectric inkjet head and a thermal inkjet head.
8 . A method of printing patterns by ejecting ink on a substrate using an inkjet printing technique, the method comprising:
coating a solvent layer on the substrate to surround printing patterns printed on an edge of the substrate to uniformize a solvent atmosphere formed around the printing patterns during a drying of the ink.
9 . The method of claim 8 , wherein the solvent layer coated on the substrate comprises a same solvent as a solvent contained in the ink used to form the printing patterns.
10 . The method of claim 8 , wherein the solvent layer formed on the substrate has a width at least twice the length of the printing pattern.
11 . The method of claim 8 , wherein the solvent layer is coated while the inkjet head is printing the printing patterns on the edge of the substrate.
12 . An apparatus to fabricate a color filter by ejecting ink in pixels formed on a substrate using an inkjet technique, the apparatus comprising:
an inkjet head to eject the ink in the pixels; and
a solvent coating unit disposed on at least one side of the inkjet head to uniformize a solvent atmosphere formed around the pixels in which the ink is ejected during the drying of the ink, the solvent coating unit to coat a solvent layer on the substrate to surround the pixels formed on an edge of the substrate.
13 . The apparatus of claim 12 , wherein the solvent layer coated by the solvent coating unit comprises a same solvent as a solvent contained in the ink filled in the pixels.
14 . The apparatus of claim 12 , wherein the solvent layer formed on the substrate has a width at least twice a length of the pixel.
15 . The apparatus of claim 12 , wherein the solvent layer is coated while the inkjet head is ejecting the ink in the pixels formed on the edge of the substrate.
16 . The apparatus of claim 12 , wherein the solvent coating unit is installed on at least one side of the inkjet head to be capable of moving vertically.
17 . A method of fabricating a color filter by ejecting ink in pixels formed on a substrate using an inkjet printing technique, the method comprising:
coating a solvent layer on the substrate to surround pixels formed on an edge of the substrate to uniformize a solvent atmosphere formed around the pixels in which the ink is ejected during a drying of the ink.
18 . The method of claim 17 , wherein the solvent layer coated on the substrate comprises a same solvent as a solvent contained in the ink ejected to form the pixels.
19 . The method of claim 17 , wherein the solvent layer formed on the substrate has a width at least twice the length of the pixel.
20 . The method of claim 17 , wherein the solvent layer is coated while the inkjet head is ejecting the ink in the pixels formed on the edge of the substrate.
21 . A printing apparatus usable in color filter fabrication, the printing apparatus comprising:
an inkjet printhead to eject ink into a plurality of pixels defined in the color filter; and
a solvent coating unit to coat a solvent layer around the color filter.
22 . The printing apparatus of claim 21 , wherein the solvent layer surrounds the color filter such that a solvent atmosphere of the pixels at a periphery of the color filter is substantially uniform to a solvent atmosphere of the pixels at a center of the color filter during drying of the ink.
23 . The printing apparatus of claim 21 , wherein the solvent layer comprises a same solvent as a solvent in the ink.
24 . The printing apparatus of claim 21 , wherein the solvent layer has a width at least twice a length of a pixel.
25 . The printing apparatus of claim 21 , wherein the solvent coating unit is disposed on at least one side of the inkjet printhead, such that the solvent layer is coated during the ink ejection process.