Edge gluing cleaning agent used in processing procedure of colored filter

Abstract

The invention provides an edge gluing cleaning agent used in processing procedure of colored filters, which has the prescription by the weight percent of 1-60 of water soluble organic amine compound, 1-60 of benzene aromatic alcohol organic solvent and 3-80 of water, wherein the water soluble organic amine compound is neovaricaine, trolamine, diethanolameine or the mixture of two or three of neovaricaine, trolamine, diethanolameine; the benzene aromatic alcohol organic solvent is phenylcarbinol, benzyl carbinol, phenylpropanol, phenaglycodol, fenipentol or benzyl hexanol or the derivatives of the six substances; and the water is pure water with the resistance higher than or equal to 18 mega ohms. The edge gluing cleaning agent obtained by compounding can remove superfluous colored photosensitive resist at the edges or backs of glass substrates very easily under normal temperature and in shorter time and has very excellent environmental-friendly performance of production and use, thereby having wide application prospect.

Description

technical field [0001] The invention relates to a cleaning agent, in particular to an edge glue cleaning agent used for cleaning the edge glue after color photoresist glue coating in the color filter (CF) manufacturing process. Background technique [0002] Color filters are an important component of liquid crystal displays. Liquid crystal displays can display color images, mainly relying on color filters. The white light from the backlight passes through the liquid crystal layer and irradiates the color filter, and passes through the color filter corresponding to the red, green, and blue pigment photoresist on each pixel to form red, green, and blue light, which finally appears in the human eye. Blend to form a color image. Color filters are the components with the largest cost in TFT-LCD panels. For example, color filters account for about 24% of the material cost of a 15-inch panel. Therefore, the quality of color filters and their technical development are crucial to L...

AI Technical Summary

Problems solved by technology

These foams hinder the contact between the edge glue cleaner and the photoresist, thus causing the problem of not being able to clean the edge glue

In addition, for the jet cleaning that is currently mainly used, the edge glue cleaning agent is sprayed to the substrate for cleaning, and it is more likely to cause foaming in the edge glue cleaning agent

[0006] The edge bead cleaner (EBR) used in the CF process is mainly monopolized by a few Japanese companies such as FuJifilm-Olin, JSR, and Toyo Ink. When the surfactant is added, it will condense in the edge bead cleaner to form oily scum. Scum attaches to the photoresist or substrate surface, resulting in contamination of the substrate

Moreover, although the surfactant has a certain defoaming effect at the initial stage of its use, the defoaming effect drops sharply as the decomposed photoresist components in the edge bead cleaner increase.

[0007] Chinese patent 200510115433.2 discloses a kind of edge glue cleaning agent, contains alkaline compound, surfactant and solvent, and its surfactant is Demini type surfactant, although defoaming property and stability are good, but cost is higher, does not have market competitiveness