Chemical rinse composition
View Patent ↗The present invention relates to a thinner composition for removing resist used in TFT-LCD manufacturing processes, and more particularly to a thinner composition for removing resist that comprises: a) 0.1 to 5 wt % of an inorganic alkali compound; b) 0.1 to 5 wt % of an organic amine; c) 0.1 to 30 wt % of an organic solvent; d) 0.01 to 5 wt % of a surfactant comprising an ionic surfactant and a non-ionic surfactant in the weight ration of 1:5 to 1:25; and e) 60 to 99 wt % of water. The thinner composition for removing resist of the present invention has good efficiency of removing unwanted resist film constituents formed on the edge of the resist film or at the back of the substrate in TFT-LCD device and semiconductor device manufacturing processes. Also, it does not have the problem of equipment corrosion.
1. A thinner composition for removing resist, comprising:
a) 0.1 to 5 wt % of an inorganic alkali compound;
b) 0.1 to 5 wt % of an organic amine;
c) 0.1 to 30 wt % of an organic solvent;
d) 0.01 to 5 wt % of a surfactant comprising an anionic surfactant and a non-ionic surfactant in the weight ratio of 1:5 to 1:25; and
e) 60 to 99 wt % of water.
2. The thinner composition for removing resist according to claim 1 , wherein the inorganic alkali compound is one or more compounds selected from potassium hydroxide, sodium hydroxide, sodium phosphate, sodium silicate, sodium carbonate, and sodium hydrogen carbonate.
3. The thinner composition for removing resist according to claim 1 , wherein the organic amine is one or more compounds selected from monoethanolamine, diethanolamine, triethanolamine, monoethylamine, diethylamine, triethylamine, ethyleneglycol amine, propyleneglycol amine, butyleneglycol amine, diethyleneglycol amine, and dipropyleneglycol amine.
4. The thinner composition for removing resist according to claim 1 , wherein the organic solvent is one or more compounds selected from ethyleneglycol phenylether, propyleneglycol phenylether, butyleneglycol phenylether, diethyleneglycol phenylether, dipropyleneglycol phenylether, N-methylpyrrolidone (NMP), N-ethyl pyrrolidone (NEP), N-propyl pyrrolidone (NPP), N-hydroxymethyl pyrrolidone, and N-hydroxyethyl pyrrolidone.
5. The thinner composition for removing resist according to claim 1 , wherein the anionic surfactant is sodium lauryl sulfate or sodium alkyl sulfate.
6. The thinner composition for removing resist according to claim 1 , wherein the non-ionic surfactant is one or more compounds selected from polyoxyethyl ether, polyoxypropyl ether, polyoxyethyl octylphenyl ether, polyoxypropyl octylphenyl ether, polyoxyethyl propyl ether, and polyoxyethylpropyl octylphenyl ether.