JPH0990117A - Production of color filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify production stages, to reduce a cost and to improve heat resistance, chemical resistance and dimensional accuracy by migrating the unnecessary parts of coloration immobilizing films from a dry film to an intaglio printing surface and removing these parts, then transferring the residual parts onto a transparent substrate. SOLUTION: The unnecessary parts of the colored coating films 2 of the dry film 4 are transferred to the main surface (intaglio printing surface 6) of a square columnar intaglio printing 5 and are removed from the dry film 4. Namely, the intaglio printing surface 6 formed with dot-like patterns as recessed parts is pressed onto the colored coating film 2 of the dry film 4 to migrate the unnecessary parts of the colored coating film 2 to the plane parts of the intaglio printing surface 6 and to allow the dot-like colored patterns 2a to remain. The dry film 4 is then turned inside out and its main surface is pressed onto the main surface of the glass substrate 8, peviously formed with the black matrix of Cr by a sputtering method, etc., to transfer the colored patterns 2a remaining on the main surface onto the glass substrate 8. This operation is repeated with the respective colors R, G, B, by which the colored layers are completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a color filter used in a flat panel display such as a liquid crystal display (display device).

[0002]

2. Description of the Related Art In recent years, flat panel displays have rapidly expanded their applications in the fields of portable personal computers, car navigation systems, televisions, game consoles, etc. due to their high image quality, thin shape and light weight. Among flat panel displays, liquid crystal displays, in particular, have been used in a wider range of areas, mainly in display devices of OA equipment, because of their light weight and low price.

By the way, a color filter is used in the colorization of a liquid crystal display without spontaneous color development, and a color is expressed by transmitting white light from a backlight through the color filter.

Generally, a color filter is formed by providing a light-shielding layer called a black matrix and a coloring layer on a glass substrate, and forming a transparent overcoat layer (protective film) and a transparent electrode in that order on the light-shielding layer. In the colored layer, R (Red), G (Green), B (Blue)
Each of the dyes corresponds to each pixel electrode on the liquid crystal display panel on a one-to-one basis, and has a mosaic arrangement, a stripe arrangement,
They are arranged in a pattern such as a triangle arrangement. In order to form such a colored layer of a color filter, various methods such as a dyeing method, a pigment dispersion method, a printing method and an electrodeposition method have been conventionally used.

[0005]

However, in these methods, as will be described in detail below, there are many merits and demerits, and there are still many points to be improved. It has problems such as poor quality and high cost.

[0006] The dyeing method has been the most commonly practiced method as a practical technique at a mass production level. Such a dyeable photosensitive material is applied on a glass substrate to form an organic base material layer, and a transparent pattern is formed through a photofabrication process of exposure and development, and then this transparent pattern is formed into a predetermined pattern. This is a method of forming a colored layer by immersing in a dye solution and dyeing, and repeating this step for three colors of R, G and B.

According to this method, it is possible to obtain a color filter having a good transmittance and spectral characteristics and a vivid color tone. However, not only the steps such as dyeing and dye-resisting treatment are complicated, but also the colored layer is resistant to temperature and humidity. It has a drawback that it is easily discolored and its reliability is poor in terms of heat resistance, chemical resistance, weather resistance and the like.

The pigment dispersion method is currently in widespread use.
It is mainly used for manufacturing color filters for FT (thin film transistor) driving type liquid crystal displays.
This method uses a stable pigment powder in place of a dye that easily fades, forms a dye layer by coating a glass substrate with a solution prepared by dispersing the pigment powder in a substrate such as polyimide, and then exposing, This is a method of performing a process of forming a colored pattern through a developing process for each of the three colors of R, G, and B. Here, for forming the colored pattern, two methods are practically used: a method of separately applying a photoresist on the pigment layer and a method of dispersing the pigment in the photoresist to make the dye layer itself photosensitive. Both of them are expected to be methods that are simpler in process and lower in cost than the dyeing method. The color filter obtained by this method is inferior to the dyeing method in terms of spectral characteristics such as brightness and color tone, but since the pigment used does not fade even at 250 ° C, it has good thermal stability and is superior to the colored layer. This has the advantage that the resistance of the transparent electrode disposed in the can be reduced.

However, in such a pigment dispersion method,
The spin coat method is used as a method for applying the paint (pigment dispersion paint), and a dedicated spin coater that has been improved according to the paint characteristics such as a rotating cup and an automatic back rinse mechanism is used, but this method is expensive. Since more than 90% of the paint is wasted, improvements in the coating method are desired. As a coating method with improved paint use efficiency, several methods such as a micro rod bar method, a nozzle lower surface coating method using a capillary phenomenon, and a nozzle upper surface coating method using an orifice have been proposed in recent years. The coating method of (3) is not only difficult to control the film thickness distribution uniformly, but also has a problem that a thick film portion is generated on the end face of the substrate. In addition, the coating process takes a very long takt time of 30 seconds or more, and there is a problem that the glass substrate is damaged significantly and the yield is low.

The printing method is a method that uses a printing ink containing a coloring matter (pigment) and has the highest mass productivity and can reduce the manufacturing cost. Some printing methods such as screen printing, flexo printing and offset printing are available. The scheme is being tried.
In recent years, simultaneous coating of three colors has been used to simplify the process and improve the yield, and a color filter having excellent heat resistance and weather resistance has been obtained. In particular, a stripe-arranged color filter in which each of the R, G, and B dye layers is formed in a stripe shape along the printing direction is ready for practical use.

However, in this method, since an uncured ink having a high fluidity is used, not only is there a difficulty in cutting the edge, such as blurring or bleeding at the edge, and the dimensional accuracy of the printed pattern is low. Therefore, it is difficult to cope with the miniaturization of pixels and the enlargement of the display screen. Also,
Since the printed surface has low smoothness and defects such as pinholes and color unevenness are likely to occur due to the inclusion of dust and the like, there is a problem of poor yield.

The electrodeposition method is a method in which a dye (mainly a pigment) is ionized in an electrolytic solution and is electrically adsorbed (electrodeposited) on an electrode pattern formed on the surface of a glass substrate. For this, a transparent electrode (ITO) is used. This method has an advantage that it is not necessary to use a photolithography process having complicated steps for forming the colored layer, and the position and the coloring density of the colored layer can be controlled with high accuracy. Recently, in connection with such an electrodeposition method, a method of transferring a colored layer formed by the electrodeposition method to the glass side, a method of forming a black matrix in the gap between the colored layers, or an ITO electrode for electrodeposition On the entire surface, and after exposing the front surface with a resist, exposing only the necessary portion by exposure, developing, a method of electrodepositing the paint in the opening, a method of increasing the dispersion strength of the pigment and improving the transmittance, etc. New attempts are being made.

However, in the electrodeposition method, it is generally difficult to form a black matrix, and a colored layer is formed on an ITO electrode formed as an electrodeposition electrode, and an ITO electrode is further provided thereon as an electrode of a liquid crystal cell. Therefore, there is a problem that the light transmittance is lowered. Further, the dot-matrix color filter has a problem that the resistance value of the lower electrode is high due to the limitation of the ITO pattern, which makes it difficult to manufacture. Furthermore, as a method for forming the colored layer of the color filter, in addition to these methods,
Ink jet method in which ink is blown off with a probe and deposited on a substrate to form a colored layer, a method in which dyes are sublimated by heat to be colored in the same manner as in a color printer, and R, G, and B patterns are formed at once with a silver salt film. A method of forming, a method of forming a color pattern by electrostatically coating pigment powder by an electrophotographic method,
A dry film method in which dry film resists of R, G, and B colors are directly laminated on a glass substrate and patterned by an exposure process has been newly developed and studied.

As described above, various methods have been proposed as a method for forming a colored layer of a color filter for a liquid crystal display or the like, but any of these methods can be mass-produced,
There are problems in terms of manufacturing cost, takt time, defect countermeasures, yields, etc., and the current situation is that a method for completely satisfying the market demand has not yet been developed.

The present invention has been made in view of these circumstances, and solves the problem of poor yield and high manufacturing cost due to the complexity of the process, and the manufacturing process can be simplified and the cost can be reduced. Moreover, it is an object of the present invention to provide a method for manufacturing a color filter that can obtain a color filter having excellent heat resistance, chemical resistance, dimensional accuracy, and the like.

[0016]

A method for manufacturing a color filter according to the present invention is a method for manufacturing a color filter in which colored layers of at least three different colors are provided in a predetermined arrangement pattern on a transparent substrate. From the dry film having a colored solidified film composed of a resin composition in which a colorant is dispersed as a main layer, after removing unnecessary portions of the colored solidified film by transferring to an intaglio surface having a predetermined pattern, the dry film The colored solidified film having a predetermined pattern remaining on the transparent substrate is transferred onto the transparent substrate.

In the present invention, as the dry film,
As the main layer, a film having a solid or solidified colored film (colored solidified film) made of a resin composition in which a coloring material such as a pigment is dispersed is used. The colored solidified film is
At room temperature, it means a solid or solid colored film that does not easily change its shape or volume by external force, and it goes without saying that it includes a substantially non-flowing film in which a part of the solvent component remains depending on the degree of drying. Yes. Then, such a dry film is obtained by applying a pigment-dispersed coating on a base film, solidifying the coating layer by applying necessary treatment such as drying or curing, and then applying a cover film thereon as desired. Obtained by depositing. Here, as the base film as the base material of the dry film, a film made of a plastic such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyimide (PI), or a metal foil. Alternatively, a multilayer film obtained by laminating the above-mentioned plastic film and metal foil can be used. In the present invention, it is particularly preferable to use a PET film having a thickness of 3 to 200 μm, but the material and the thickness are not limited as long as they meet the requirements required as the base material of the dry film. The film width is determined according to the size of the transparent substrate or the like used, and the length is not particularly limited.

Further, in such a base film, it is desirable to subject the main surface to a treatment for reducing the adhesiveness to the colored solidified film and increasing the releasability. As a treatment to reduce the adhesiveness, a method of forming a layer made of a material having a good releasability such as a silicone-based polymer or organic paraffin, or a physical method such as vapor deposition or sputtering of carbon or another inorganic compound is formed. Then, there is a method of improving the smoothness of the base film and reducing the surface energy. By subjecting the main surface of the base film to such adhesiveness reduction treatment, the efficiency of transfer of the colored solidified film from the dry film to the intaglio surface is increased, and at the same time, the colored solidified film remaining on the dry film is transferred to the transparent substrate. The efficiency of the transfer can also be improved, and defects during the transfer can be significantly reduced.

In the present invention, the pigment dispersion type coating material to be coated on such a base film is not particularly limited as long as it has been developed and used for forming a colored layer of a color filter. For example, it is preferable to use a coating material in which pigments of R, G, and B colors are dispersed in a vinyl acetate-based or acrylic-based resin solution. Further, in the present invention, a urethane-acrylate-based or epoxy-acrylate-based photosensitive resin (ultraviolet curable resin) is used as a resin which is a base of such a coating material, and such a photosensitive resin is contained. In the process of transferring the colored solidified film to the transparent substrate, by exposing to light to cure the photosensitive resin, the adhesion of the colored solidified film to the transparent substrate is further improved, and transfer defects are eliminated. You can As a coating method of such a pigment dispersion type paint, a reverse coating method, a gravure coating method, a micro gravure coating method, a bar coating method, a wire bar coating method, a gap coating method, a knife coating method, a nozzle coating method, a curtain coating method. Various methods such as a spray coating method and an aero coating method are exemplified. Any coating method may be used as long as the thickness required for the colored layer is secured, but a microgravure coating method or a nozzle coating method, which is particularly excellent in thin film properties and mass productivity, is preferable. The thickness of the coating layer is not particularly limited, but in consideration of transfer efficiency, R, G, B
The thickness of the first transferred color layer of each color <the thickness of the second transferred color layer <the thickness of the third transferred color layer, and the thickness of the color layer transferred later is increased. Is desirable. Further, as the cover film deposited on the coating layer of such paint, PET, PPS,
Plastic films such as PE, PP, PI can be used. Especially PE or P with a thickness of 3 to 50 μm
The use of P film is preferable, but the material and thickness are not particularly limited as long as they meet the requirements required as a cover film. The film width and length are determined according to the size of the base film used.

In the present invention, as an intaglio plate for transferring an unnecessary portion of the colored solidified film of such a dry film to the plate surface of itself and removing it from the main layer of the dry film, an array corresponding to a coloring pattern of each color is used. The whole shape is not particularly limited as long as it has a concave portion of the pattern. For example, a support having a columnar shape, a flat plate shape, a curved surface shape, a roll shape, a sheet shape, or the like provided with an intaglio surface is used.
As a material forming the intaglio plate, an inorganic material such as metal, metal oxide, ceramics, or an organic polymer material having high elasticity can be used. In particular, in the case of an intaglio plate made of a synthetic resin, the transfer efficiency of the portion not requiring the colored solidified film from the dry film to the intaglio plate is remarkably improved, and transfer defects to the transparent substrate can be significantly reduced. The entire plate having such an intaglio surface can be made of a transparent material such as glass, polyester resin, acrylic resin, polycarbonate resin, or epoxy resin. In that case, a transparent plate is formed from above. Since the transfer surface of the transparent substrate can be visually recognized through the watermark, there is an advantage that the alignment can be facilitated when transferring the colored patterns of the second and subsequent colors.

Further, such an intaglio surface can be formed by a photolithography process using a photosensitive resist. When the intaglio surface is formed in this manner, the dimensional accuracy of the array pattern of the intaglio surface is improved, and a more accurate colored pattern can be formed. here,
As the photosensitive resin, there are a positive type resist which is easily dissolved in a solvent by irradiation with light or ultraviolet rays, and a negative type resist which is difficult to be dissolved in a solvent by being polymerized or cured by irradiation with light or ultraviolet rays. Although both a positive resist and a positive resist can be used, it is preferable to use a photopolymerizable polyimide resin which is a negative resist.

Further, in the present invention, the transfer removal of the portion not requiring the colored solidified film from the dry film to the intaglio surface can be carried out by heating the plate surface or the dry film, and the solidified coloring from the dry film to the transparent substrate is carried out. Similarly, the transfer of the film pattern portion can be performed by heating the dry film. The heating temperature varies depending on the heat resistance of the material constituting the plate surface and the base film of the dry film, but it is preferable to heat the surface of the colored solidified film to 50 to 200 ° C. By heating the plate surface, etc. to an appropriate temperature in this way, it is possible to transfer the colored solidified film in a softened or partially melted state, and thereby transfer and remove the colored solidified film from the dry film to the plate surface. It is possible to improve the efficiency and the transfer efficiency of the remaining colored solidified film to the transparent substrate, and reduce the occurrence of transfer defects.

In the present invention, a glass substrate or a substrate made of a transparent synthetic resin is used as the transparent substrate to which the colored solidified film having a predetermined pattern from which the unnecessary portion is transferred and removed by the intaglio surface is finally transferred. can do. Examples of the glass substrate include 7059 type glass substrate manufactured by Corning and NA45 type glass substrate manufactured by NH Techno Glass, which are commonly used as glass substrates for liquid crystal displays.

As the substrate made of transparent synthetic resin,
Polyester resin, acrylic resin, fluorinated acrylic resin, polycarbonate resin, epoxy resin, polyether ether ketone resin, polyether sulfone resin,
A plate-like body molded from a synthetic resin such as polyarylate resin or 4-methyl-pentene-1 resin, which has high transparency and good adhesion to a colored solidified film, or is wound in a roll shape with a thinner thickness It is possible to use a film or the like that can be handled in the treated state. The plate-like body or film made of such a transparent synthetic resin is usually used alone, but it can also be used by bonding it to a glass substrate or the like so that the surface to be transferred becomes the synthetic resin surface. When such a transparent synthetic resin substrate is used, compared with the case where a glass substrate is used, there is a great advantage from the viewpoint of lightness, and further, the transfer efficiency of the colored solidified film is high and the yield is good.

Further, as the transparent synthetic resin substrate, it is desirable to use a transparent synthetic resin film having extremely small optical anisotropy, such as Amorex (trade name of optically isotropic film manufactured by Fujimori Industry Co., Ltd.). When such a film is used as the transparent substrate, it is possible to manufacture a color filter having extremely high light transmittance and high visibility. In such a transparent substrate (glass substrate or transparent synthetic resin substrate), ultraviolet rays are irradiated before the transfer of the colored solidified film to remove stains on the transfer surface to clean it and to chemically transfer the surface. It can also be activated to improve the adhesion to the colored solidified film or the adhesive layer described later.
Furthermore, after performing such an ultraviolet irradiation treatment as needed, an adhesive layer is formed on the transfer surface of the transparent substrate, and the colored solidified film is transferred onto the adhesive layer, so that the transparent film can be transferred from the dry film. It is possible to more stably and completely transfer the colored solidified film to the. The method for forming the adhesive layer here is to provide a layer of an organic polymer adhesive such as polyisocyanate-based, polyolefin-based, polyamide-based, polyester-based or an inorganic compound-based bonding agent such as gel silica. Alternatively, there is a method of generating free radicals on the surface of the transparent substrate by plasma contact treatment such as corona discharge treatment to improve the adhesiveness.

In the present invention, the installation of the black matrix on the transparent substrate is not an essential element, but it can be provided if necessary. As the forming method, a physical method such as an ordinary Cr sputtering method or vapor deposition method, a chemical method using a photosensitive resist, a method by printing, a method of transferring, exposing, and developing a dry film to obtain a pattern, or the present invention Needless to say, various methods such as a method of transferring a matrix pattern from a dry film can be used as in the case of forming the colored layer in (1). Further, in the color filter thus obtained, an overcoat layer, I
Transparent electrodes such as TO film, reinforcing layer, gas barrier layer, heat resistant layer,
A hard coat layer or the like can also be provided.

In the method for manufacturing a color filter of the present invention, when forming a colored layer in which at least three different color patterns are arranged in a predetermined shape, concave portions are formed on the intaglio surface formed in the predetermined pattern. After the unnecessary portion of the colored solidified film of the dry film moves in the thickness direction without breaking, the colored solidified film of the predetermined pattern remaining after being removed from the main layer of the dry film is transferred onto the transparent substrate. As a result, the pattern portion of the colored solidified film is efficiently transferred onto the transparent substrate, and it is possible to form a colored pattern having good dimensional accuracy and no edge deformation or pattern shape distortion.

Furthermore, since the number of liquid treatment steps (wet process) such as the photofabrication process of development and exposure and the cleaning process is small, and the number of processes requiring heat treatment is shortened, the productivity is high and the cost is low. Is realized. In addition, the damage to the transparent substrate is small, the occurrence of defects is suppressed, and the number of steps is small and the tact time can be significantly shortened. Furthermore, regarding the utilization efficiency of the colored solidified film in the dry film,
By controlling the shift amount of the plate, a high utilization efficiency of 90% or more can be achieved.

[0029]

Embodiments of the present invention will be described below with reference to the drawings.

Example First, dry films for R, G and B were prepared respectively. That is, as shown in FIG. 1 (a), a pigment-dispersed paint is applied on a base film (100 μm-thick PET film) 1 with a microgravure coater to a thickness of 1.8 μm, and dried and cured. After forming the colored coating film 2 of R, R, as shown in FIG.
A cover film (PE film having a thickness of 20 μm) 3 was adhered onto the above to obtain a dry film 4 for R. Similarly, G
A dry film for B and a dry film for B were prepared respectively.

Next, as shown in FIG. 2 (a), the unnecessary portion (the portion other than the pattern) of the colored coating film 2 of the R dry film 4 is covered with the principal surface of the prismatic intaglio 5 (the intaglio surface 6). And was removed from the dry film 4. That is, the intaglio surface 6 in which a dot-shaped pattern as shown in FIG. 3 is formed as a recess 7 having a depth of 5 μm is pressed against the colored coating film 2 of the R dry film 4 to eliminate the need for the colored coating film 2. The portion is transferred to the flat portion of the intaglio surface 6, and the dot-shaped colored pattern 2a
Left. Then, as shown in FIG. 2B, the dry film 4 is turned over and pressed on the main surface of the glass substrate (7059 by Corning Co., Ltd.) 8 on which a black matrix of Cr has been formed in advance by a sputtering method or the like. The colored pattern 2a remaining on the main surface was transferred onto the glass substrate 8.

Further, for each of the colors G and B, after similarly forming a dot-like colored pattern on the glass substrate 8, baking (post-baking) is performed, and R and
A colored layer in which three colors G and B are arranged in a mosaic pattern is completed.

With respect to the color filters thus obtained, the utilization efficiency and yield of the colored coating film 2 in the base film 1 and the dimensional accuracy of the colored pattern were examined.

Then, a TFT-driven liquid crystal display device was manufactured using the color filter obtained in this example. That is, an overcoat layer of acrylic resin or the like is provided on the colored layer of this color filter by a spin coating method,
After further flattening treatment, an ITO film was formed by a sputtering method and further subjected to alignment treatment to obtain a front side substrate of the liquid crystal display element. This was arranged so as to face a TFT substrate (not shown) to which a TFT driving element, an image electrode and the like were attached, and a liquid crystal composition was sandwiched between these substrates to obtain a liquid crystal display element. When a test pattern was displayed on such a liquid crystal display element, defects such as white pinholes, color unevenness, and discoloration in the displayed image were not found, and it was confirmed that good display was realized.

Next, for comparison, a dot matrix type color filter for TFT-LCD was manufactured by the following three methods.

Comparative Example 1 (Pigment Dispersion Method) First, regarding R, a pigment resist (pigment dispersion type resist) was applied on a glass substrate using a bar coater and dried, and then a photolithography process of exposure, development and washing was performed. After that, baking (post-baking) was performed to form a dot pattern of R color. Next, a dot pattern was similarly formed for each of the colors G and B to produce a color filter. With respect to the color filter thus obtained, the utilization efficiency of the pigment-dispersed resist, the yield, and the dimensional accuracy of the colored pattern were examined, respectively, and it was found that all were good, but inferior to the color filter obtained in this example. It was

Comparative Example 2 (Offset Printing Method) First, for R, the pigment ink held on the intaglio plate was transferred to the surface rubber layer of the blanket cylinder, then transferred from the blanket cylinder onto the glass substrate, and then baked to form a dot pattern. Was formed. Next, a dot pattern was similarly formed for each of the colors G and B to produce a color filter. With respect to the color filter thus obtained, the utilization efficiency of the pigment ink, the yield, and the dimensional accuracy of the coloring pattern were examined, respectively, and the utilization efficiency of the ink is extremely good as well as the color filter obtained in this example, The dimensional accuracy of the obtained colored pattern was poor and the yield was low.

Comparative Example 3 (exposure using a dry film
Development Method First, using a photosensitive pigment resist, dry films for R, G, and B were prepared in the same manner as in this example. Next, the photosensitive resist of the dry film for R was transferred onto a glass substrate, subjected to a photolithography process of exposure, development and washing, and then baked to form a dot pattern of R color. Next, a dot pattern was similarly formed for each of the colors G and B to produce a color filter. With respect to the color filters thus obtained, the utilization efficiency of the pigment resist, the yield, and the dimensional accuracy of the colored pattern were examined, respectively, and they were found to be good, but inferior to the color filters obtained in this example. In particular, the yield was significantly low.

[0039]

As is apparent from the above description, in the color filter manufacturing method of the present invention, unnecessary portions of the colored solidified film of the dry film are transferred to the intaglio surface having a predetermined pattern and removed. Since the remaining portion of the colored solidified film is configured to be transferred onto the transparent substrate,
The colored solidified film having a predetermined pattern is efficiently transferred onto the transparent substrate, and a colored pattern having good dimensional accuracy and no edge deformation or pattern shape distortion is formed. Further, the manufacturing method of the present invention does not require a liquid processing step such as a photofabrication process such as development and exposure, a cleaning process, etc., and is simplified with a small number of steps.

Therefore, according to the method of the present invention, problems such as poor yield and high cost due to complexity of steps are solved, heat resistance and chemical resistance are excellent, and dimensional accuracy is excellent. The color filter can be manufactured with high yield. By using the color filter thus obtained, it is possible to provide a color flat panel display having excellent color characteristics and environment resistance, and particularly a color filter for a liquid crystal display represented by a TFT method and an STN method. It is suitable as

[Brief description of drawings]

FIG. 1 is a diagram for explaining a process of manufacturing a dry film in an example of a method for manufacturing a color filter of the present invention.

FIG. 2 is a diagram for explaining a step of transferring a colored coating film from a dry film to a glass substrate in the same Example.

FIG. 3 is a diagram schematically showing a dot pattern formed on an intaglio surface in the example.

[Explanation of symbols]

 2 ... Colored coating film 2a ... Colored pattern 4 ... Dry film 6 ... Intaglio surface 7 ... Recessed portion 8 ... Glass substrate

Claims (1)

[Claims] 1. A method for producing a color filter in which at least three kinds of colored layers of different colors are provided in a predetermined arrangement pattern on a transparent substrate, wherein for each of the colors, a solidified coloring is formed from a resin composition in which a coloring material is dispersed. From the dry film having a film as a main layer, after removing unnecessary portions of the colored solidified film by transferring to an intaglio surface having a predetermined pattern, the colored solidified film having a predetermined pattern remaining on the dry film is formed on the transparent substrate. A method for manufacturing a color filter, which comprises transferring the image onto the upper surface.