JPS6177014A - Manufacture of color filter - Google Patents

Abstract

PURPOSE:To prevent the mixing of colors by setting a film forming agent applied to a substrate to such a degree that it is not well cross-linked, setting the boundary parts between parts to be pattern-wise dyed with dyes having different colors, and carrying out pattern-wise dyeing. CONSTITUTION:A dyeable resin contg. a photosensitive substance is applied to a transparent substrate 1 as a film forming agent 2 and set by exposure to ultraviolet rays or baking to such a degree that the agent 2 is not well cross-linked. Only the boundary parts 4 between parts to be patternwise dyed with dyes having different colors are exposed to ultraviolet rays through a mask 3 until the parts 4 are well cross-linked and set. A positive type photoresist 5 is then applied, exposed through a mask 6, and developed. Parts of the agent 2 not covered with the photoresist 5 are dyed red R, and the agent 2 are partially dyed green G and blue B in the same way in succession. The remaining photoresists are removed, and a color filter having three colors is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing color filters used in color televisions and other display devices.

[Conventional technology]

The conventional method for manufacturing color filters is to coat a glass substrate with a dyeable resin such as gelatin and a photosensitive substance such as ammonium dichromate, and then apply ultraviolet rays to the extent that the crosslinking reaction is not sufficiently inhibited. Expose. A photoresist is applied thereon and partially exposed using a predetermined mask to develop and dye a predetermined color, for example red. After repeating the same procedure and dyeing green, IT color, etc., the resist is finally removed.

[Problem that the invention seeks to solve]

In the above-mentioned conventional technology, if the crosslinking reaction of the dyeable resin is sufficiently carried out, the amount of dye adhering to the resin will be reduced.
Insufficient color and density. Therefore, dyeing has conventionally been carried out without sufficiently crosslinking the resin. However, as a result, adjacent areas of other colors are also dyed,
There was a problem that color mixing occurred.

[Means for solving problems]

This invention is intended to solve these drawbacks in the conventional technology, and involves coating a glass substrate with a film agent containing a photosensitive substance added to a dyeable resin, thereby forming a border between areas to be dyed with two or more colors. By curing the material in advance by irradiating it with ultraviolet rays), even if pattern dyeing is performed afterwards, the border area will not be dyed and color mixing will not occur.

〔Example〕

A film agent 2, which is a dyeable resin such as gelatin and a photosensitive substance added thereto, is applied to a transparent substrate 1 such as glass (FIG. 2). This is cured by exposure to ultraviolet rays or by baking to such an extent that the crosslinking reaction does not occur sufficiently. To this, mask 3
Using UV light, only the boundary portion 4 of the portion of the pattern 7 to be dyed with two or more colors is exposed to ultraviolet rays, and this portion is sufficiently crosslinked and cured (FIG. 3). Next, a positive type photoresist 5 is applied and partially exposed using a mask 6 (FIG. 4), and a predetermined color is applied to the areas where the resist 5 is removed.
For example, stain red R (Fig. 5). A photoresist is further applied thereon and partially exposed using a mask to develop and dye the next color, for example, green G. Further, the same process is repeated to dye blue B, and finally the resist is peeled off to obtain a color filter (FIG. 1) with three colors of red R, green G, and positive color B.

〔Effect of the invention〕

According to the method for manufacturing a color filter of the present invention having the above-mentioned O configuration, the boundary portions of the dyed pattern portions of each color are sufficiently crosslinked and cured in advance, so there is no risk of color mixing, and a clear color filter can be obtained.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a color filter manufactured according to the present invention, and FIGS. 2 to 5 are cross-sectional views showing manufacturing steps according to the manufacturing method of the present invention. 1... Substrate 2... Film material 4... Boundary part and above

Claims (1)

[Claims] A dyeable resin with a photosensitive substance added thereto is applied as a film agent to a transparent substrate, and the film agent is exposed to ultraviolet rays to an extent that crosslinking is not sufficiently performed or is cured by baking, and then coated with two or more A method for manufacturing a color filter, characterized in that the boundary portion of the portion to be pattern dyed with the color is cured in advance by ultraviolet irradiation, and then pattern dyeing is performed.