JPS5945962B2 - Striped filter manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a color stripe switch created by adding a diazo compound, a coupling agent, and a sensitizer to a photosensitive curable resist and forming a cured film by exposing the resist to ultraviolet light. It concerns the method of manufacturing Luther.

Traditionally used in image pickup tubes, the Larstripe filter is usually made by uniformly coating a glass substrate with a photosensitive liquid made of polyvinyl alcohol, grue, casein, gelatin, etc., and drying it to form a photosensitive film. For example, the method described in Japanese Patent Publications No. 52-17375 and No. 52-17376 was employed, which involves mask exposure, development, and sequential dyeing with a dye to form striped portions.

However, as mentioned above, the conventional method of dyeing films made of polyvinyl alcohol, gris, gelatin, casein, etc.
Because of the diameter (1 to 2 μm), it is difficult to dye the film to a higher concentration than required, and there is also the disadvantage that the dye is redissolved during the treatment during the manufacturing process of the striped filter. In view of the above-mentioned drawbacks of the conventional method, the present inventor conducted extensive research with the aim of producing a color stripe filter that does not require the dyeing process using a dye solution as in the conventional method. A diazo compound is added to a photosensitive curable resist formed on a glass substrate, and the curable resist is exposed to ultraviolet light to form a cured film.At the same time, the added diazo compound develops color upon exposure to ultraviolet light, creating a photosensitive curable resist. is colored in a predetermined color and does not require a dyeing process, which shortens the manufacturing process by about half, improves yield, and significantly reduces the manufacturing cost of color stripe filters. This led to the completion of the .

The present invention is based on a photosensitive curable resist in which a diazo compound, a coupling agent, and a sensitizer are added to gelatin, polyvinyl alcohol, a photosensitive resin, etc. to color a striped portion of a predetermined first color on an optical glass substrate. A pattern in which only the striped portions of the resist were made transparent was superimposed and exposed to ultraviolet rays, and as the striped portions of the predetermined first color developed, the photosensitive curable resist was cured to form a cured film, and then developed to develop color. The photosensitive curable resist is removed leaving a colored stripe portion of a predetermined first color, and then the same process is repeated according to the remaining desired number of colors to form a desired number of colored stripe portions to form a color stripe filter. The present invention provides a method for producing a color stripe filter by preparing a color stripe filter and covering it with a protective film.

For the photosensitive curable resist, polyvinyl alcohol casein, grue, gelatin, photosensitive resin, etc. are used, and as the sensitizer, for example, ammonium dichromate is used, and a diazo compound is added thereon.

Examples of the photosensitive curable resist used in the present invention are listed below, but the examples are not limited thereto.

(1) Red B) For color development (unit 9) Polyvinyl alcohol 70-100 Ammonium dichromate 10-40 4-Hydroxy-2-keto N-methyl 3,4,5,6,7,8,5-20
9,10 Octahydroquinone (coupling agent) P-N,N-diethylaminobenzenediazonium tetrafluoroborate 10-30 acid salt (dye) Water 1000ml (4) Blue (6) Polyvinyl alcohol for coloring Ammonium dichromate N-0- Methylphenyl-3-hydroxy-2-naphthamide (coupling agent) 4-Morpholine-2,5-dibutoxybenzenediazonium tetroph 20 Loroborate water 1000ml (!Ii) Yellow (7) Polyvinyl alcohol for coloring Ammonium dichromate>τ Fujiacetoacetylethylene diN-4-alkylcyclohexylacetamide (unit 9) 4-morpholinobenzenediazonium tetrafluoroborate 4-morpholino 2-5-dibutoxybenzenediazonium tet 10 fluoroborate water 1000 ml Next, the color of the present invention A method for manufacturing a stripe filter will be explained in detail with reference to the drawings.

FIG. 1 is a sectional view of a final product of an example of a color stripe filter obtained by the present invention, and FIGS. 2 to 11 are schematic sectional views showing the manufacturing process of the color stripe filter shown in FIG. 1. .

FIG. 1 shows an example of a color stripe filter manufactured according to the present invention as described above, in which red (R), for example, about 1 to 5 μm thick is coated on an optical glass substrate 1 with a thickness of 1 to 3 mm. A yellow (Y) coloring stripe layer 2 and a blue (8) coloring stripe layer 2 are provided.

FIG. 2 shows, for example, a diazo compound for forming a blue color containing a coupling agent and a sensitizer (unless otherwise specified, the diazo compound includes a coupling agent and a sensitizer) on an optical glass substrate 1. This shows a state in which the added photosensitive curable resist 3 is coated. In FIG. 3, a blue (8) color stripe pattern 4 of the photosensitive curable resist is superimposed on the photosensitive curable resist 3 of FIG. 2, and exposed to ultraviolet light.
Pass it through ammonia (hereinafter, this operation will be omitted as it is usually always performed).

) At the same time the blue stripe portion is colored, the photosensitive curable resist i is cured to form a cured film 3'. Next, as shown in FIG. 4, the striped portion 3'' was developed, and the resist that was not colored blue was removed and dried to form a blue colored stripe portion 3''.
to form. Figure 5 shows the state shown in Figure 4 in red (
5)) This shows a state in which a photosensitive curable resist 5 containing a coloring diazo compound is coated on a blue (8) colored resist 3''. This figure shows a state in which the stripe pattern 1 is superimposed and exposed to ultraviolet rays, and the red stripe portion 5' is colored. Thus, the stripe portion 5' is colored first blue and then red on the optical glass substrate. Then, as shown in FIG. 7, the resist is developed, leaving the blue and red resists and removing the rest, and drying, thereby forming blue-red striped portions 4'' and 5 on the optical glass substrate. '5 is formed.

Further, in the same manner as above, a photocurable resist 6 containing a yellow Y coloring diazo compound was coated on the blue and red striped layers 4'' and 5'7 as shown in FIG. 8, and as shown in FIG. The yellow Y stripe pattern 4'' is superimposed and exposed to ultraviolet light to color the yellow stripe portion, at the same time forming a cured film 6' of photosensitive hardening resist, which is developed as shown in FIG. Color stripe portions 344, 5″, 6′ where red, blue, and yellow stripes are formed on the optical glass substrate 1 by removing resists other than those that have developed red and yellow colors.
7 is formed, and then a protective film layer 7 is applied thereon to complete the color stripe filter of the present invention.

(Figure 11). As mentioned above, the present invention eliminates the need for the dyeing prevention resist treatment process for coloring blue, red, yellow, and other colors that were conventionally required.
There is an advantage that the dyeing process is not required, the manufacturing process of the color stripe filter is shortened to about 14 compared to the conventional method, the yield is improved, and the manufacturing cost is therefore significantly reduced.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of a color stripe filter manufactured according to the present invention, and FIGS. 2 to 11 are views showing the manufacturing process of the color stripe filter manufactured according to the present invention, respectively. be. 1... Optical glass substrate, 3, 3', 372...
...Photocurable resist containing a diazo compound for blue coloring, 4,4',4'7...Pattern, 5,5',
5'7...Photosensitive curable resist containing a diazo compound for red coloring, 6,6',6'ζ...Photosensitive curable resist containing a diazo compound for yellow coloring, R (red) ,Y(
yellow), B (blue)... each color strig part.

Claims (1)

[Scope of Claims] 1. Striped portions of a predetermined color are added to a photosensitive curable resist to which a diazo compound and a coupling agent are added to provide striped portions of a predetermined color on gelatin, polyvinyl alcohol, photosensitive resin, etc. formed on a substrate. The process of superimposing and exposing a pattern corresponding to the above-mentioned color to develop the color of the stripe portion and curing the photosensitive curable resist, and then developing and removing the colored stripe portion, leaving behind the colored stripe portion. A method for manufacturing a striped filter, characterized in that alignment is performed as necessary and repeated as many times as necessary. 2. The method for manufacturing a stripe filter according to claim 1, characterized in that a sensitizer is added to the photosensitive resin. 3. The method for manufacturing a stripe filter according to claim 1 or 2, characterized in that after color development is completed, the photosensitive hardening resist film on the surface is removed and a protective film is coated.