JPH06308313A - Color filter - Google Patents

Abstract

PURPOSE:To eliminate the difference in levels in the adjacent parts of respective color patterns by coating and to flatten the colored layers formed by printing between the respective colors by fusing the ink compsns. of the colored patterns different from each other in the adjacent parts of the colored patterns. CONSTITUTION:The respective colored patterns 16R, 16G, 16B have the fused parts 7a, 7b, 7c at the time of coating of the colored patterns and the ink compsns. of the colored patterns different from each other are fused in these fused parts 7a, 7b, 7c. The ink compsns. need to be fluidized to each other and are made into apparently one fluid body by a decrease in viscosity in the state after coating of the ink compsns. and the heating stage as the conditions for fusing. The color filters having the fused parts described above are formed by properly controlling the ink compsns., heat treatments such as drying and curing, and treatments, such as washing, degreasing and plasma, for improving the wettability of the surface of the base material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter,
In particular, it relates to a color filter used for a liquid crystal display or the like.

[0002]

2. Description of the Related Art In recent years, a monochrome or color liquid crystal display (LCD) has attracted attention as a flat display. Color liquid crystal displays include an active matrix system and a simple matrix system for controlling three primary colors, and a color filter is used in each system. In the liquid crystal display, the constituent pixel portions are set to the three primary colors (R, G, B), and transmission of each light of the three primary colors is controlled by electrical switching of the liquid crystal to perform color display.

This color filter has R,
Generally, a colored layer having G and B colored patterns, a black matrix located at the boundary of each pixel, a protective layer and a transparent electrode layer are provided.

Conventionally, as a method for manufacturing a color filter, a dyeing method is applied in which a dyeing and sensitizing material is applied, and a pattern formed by developing after exposing through a photomask is used. Dispersed and exposed through a photomask, then developed by a pigment dispersion method, or a printing method in which each color is printed with printing ink, and the conductive film on the substrate is exposed through a photomask to form the pixels of the color filter. Examples include an electrodeposition method of patterning into a corresponding shape and electrophoretically forming a colored layer. In products such as liquid crystal color televisions and liquid crystal displays for computers, which are required to be popular, quality and cost reduction are the most important problems, and therefore reduction in manufacturing cost is desired.

[0005]

However, in the color filter manufacturing method described above, the photoprocess is repeatedly used except for the printing method, and therefore, when manufacturing a large area color filter, a large exposure apparatus is required. There are problems that a large number are required, the manufacturing cost is high, and the throughput (processing speed) is low.

Further, since the conventional printing method has no photo process step and the steps are simple as compared with the other methods described above, it has been expected to reduce the manufacturing cost, but the quality is inferior.
For example, it cannot be used for applications requiring high accuracy such as a thin film transistor (TFT) type liquid crystal display, and the yield of non-defective products at the time of manufacturing is low, so that the expected reduction in manufacturing cost cannot be obtained. Furthermore, the conventional printing method, for example, the ink held in the intaglio is transferred to the blanket,
After that, in the intaglio offset printing in which a color layer composed of three colors of R, G, and B is transferred to the substrate and the ink of one color is printed on the substrate, the ink is fixed by a method such as curing in the next step. It is necessary to prevent contamination of Otherwise, the already printed ink will reversely transfer to the blanket, making the ink thickness unstable and causing a lot of contamination, which is not suitable for repeated printing.
Thus, in the conventional method, the process is complicated, and the cross section of each colored layer 80 of the completed color filter is shown in FIG.
As shown in (3), the color filter has a semi-cylindrical shape, and large irregularities are formed on the color filter surface. Due to the unevenness, light and shade of color appear, and the display quality is deteriorated due to so-called gap unevenness of the liquid crystal cell, and the alignment process of the liquid crystal becomes uneven, which causes a problem that uniform display cannot be performed.

In order to solve this problem, it has been customary in the past to carry out flattening in a post-process such as polishing the surface, pressing with a roll or the like, or applying a paint for filling the recess.

The present invention has been made in view of the above circumstances, and is a high-precision color filter used for a flat display such as a liquid crystal display, an imager such as a CCD, a color sensor or the like, which is colored. An object is to provide a color filter having excellent layer flatness.

[0009]

In order to achieve such an object, the present invention provides a color filter in which a colored layer having two or more colors is printed on a substrate in a desired coloring pattern. Each color pattern was configured such that ink compositions having different color patterns were fused at adjacent portions.

[0010]

In each color pattern of the color filter of the present invention, ink compositions having different color patterns are fused at adjacent portions, whereby the step difference at the adjacent portions of each color pattern due to coating disappears and printing is performed. Flattening of the colored layers with respect to each other is achieved. Further, the fusion portion in the present invention is narrow and a large effective area can be obtained.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of an active matrix type liquid crystal display (LCD) using a color filter manufactured according to the present invention, and FIG. 2 is a schematic sectional view of the same. 1 and 2, the LCD 1 includes a color filter 10 and a transparent glass substrate 2.
0 is made to face each other via a seal member 30, and a twisted nematic (TN) liquid crystal has a thickness of about 5 to 10 μm therebetween.
The liquid crystal layer 40 is formed to a certain degree, and the color filter 10
The polarizing plates 50 and 51 are arranged outside the transparent glass substrate 20.

FIG. 3 is an enlarged partial sectional view of the color filter 10, which is normally a transparent substrate 13.
A black matrix substrate 12 on which a black matrix 14 such as a black relief or a metal thin film is formed, a colored layer 16 formed between the black matrices 14 on the black matrix substrate 12, and the black matrix 14 and the colored layer 16 are covered. Protective layer 1
8 and a transparent common electrode 19. The color filter 10 is arranged such that the transparent common electrode 19 is located on the liquid crystal layer 40 side. The colored layer 16 is composed of a red pattern 16R, a green pattern 16G and a blue pattern 16B, and the array of each colored pattern is a mosaic array as shown in FIG. The arrangement of the coloring pattern is not limited to this, and may be a triangular arrangement, a stripe arrangement, or the like.

Further, in this embodiment, the adjoining portion exists on the black matrix, but there is no particular limitation on the position, and the adjoining portion may be present on the glass surface without the black matrix. In the present invention, even if there is a step in the base such as when the black matrix is thick, the adjacent colors have an excellent effect of flattening each other.

Display electrodes 22 are provided on the transparent glass substrate 20 so as to correspond to the respective colored patterns 16R, 16G and 16B, and each display electrode 22 has a thin film transistor (TFT) 24. Further, a scanning line (gate electrode busbar) 26a and a data line 26b are arranged between the respective display electrodes 22 so as to correspond to the black matrix 14.

In such an LCD 1, each of the colored patterns 16R, 16G and 16B forms a pixel, and the display electrode corresponding to each pixel is turned on and off in a state in which the illumination light is irradiated from the polarizing plate 51 side to turn on and off the liquid crystal layer. 40 operates as a shutter, and irradiation light is transmitted through each pixel of each of the colored patterns 16R, 16G, and 16B to perform color display.

As shown in FIG. 4, the color filter of the present invention has a desired number of colors (in the case of the present embodiment, three colors of R, G and B are used).
A colored layer of a desired color pattern 16R, 16
G and 16B are formed on the substrate. In order to facilitate understanding of the present invention, FIG. 4A shows a state of the color filter at the moment when the colored patterns 16R, 16G, and 16B are sequentially coated on the substrate. In b), the state of an example of the color filter of the present invention as a final product after the subsequent steps is shown.

Each of the coloring patterns 16R, 16G, 16B is a fusion portion 7 when the adjacent coloring patterns are applied.
a, 7b, 7c, and the ink compositions of different coloring patterns are fused in the fusion portions 7a, 7b, 7c. Such a fused portion is formed by coating adjacently when each colored pattern is sequentially formed. The overlapping portion is generally formed on the black matrix 14, but is not limited thereto. The most characteristic and emphasized point of the present invention is that each of the fusion parts 7
In a, 7b, and 7c, the ink compositions having different coloring patterns are fused. That is, the term “fused” means a state in which the Sakai interface (shown in FIG. 4A) having a naturally occurring shape immediately after being applied in the fused portions 7a, 7b, 7c is mixed or deformed. The state will be described in more detail in the following two types. That is, as shown in FIG. 5, the two types of ink compositions in the fusion portion, for example, pigment A and pigment B, diffuse into each other,
A type in which a mixed phase is confirmed at the interface between the two, FIG.
Although the interface between the two can be confirmed as shown in (a) to (c), the interface shape is completely different from that at the time of coating, more specifically, at least one ink composition is different from the other ink. If it has penetrated into the composition side and is a monotone curve, it can be said to be fusion, and it is not limited to the illustrated form, but various forms are applicable. Expressing this fusion in another form, adjacent ink compositions (especially coloring materials) diffuse with each other and have a mixed phase and no interface, or there is an interface and the adjacent coloring materials Assuming that the tangent to the envelope of the boundary of the coloring material when viewed from the cross-sectional direction is θ (0 ≦ θ ≦ 90 °) with the base material, there is a portion where θ increases from the base material to the surface. If it exists (Fig. 6)
(A)-(c)). Incidentally, when the conventional ink is not fused, it decreases monotonically as shown in FIGS. 6 (d) to 6 (e). The manufacturing method will be described later, but the conditions for fusing are the steps after the ink composition is applied,
For example, it is considered necessary that the viscosity decreases in the heating step and fluidizes with each other to form one fluid apparently, and the ink composition, heat treatment such as drying and curing, and wettability of the surface of the substrate By appropriately controlling the cleaning, degreasing, plasma treatment and the like for improvement, the color filter having the fused portion of the present invention is formed. At this time, each color fusion portion of the color filter is clearly shown by observing a section having a thickness of about 600Å with a transmission electron microscope.

As the resin constituting the ink composition used for forming each colored pattern (colored layer), for example, methacrylic resin, acrylic resin, polyamide resin (polyimide resin, polyamide resin), epoxy resin, urethane resin Various known resins including resins, polycarbonate-based resins, silicone-based resins, polyester-based resins, styrene copolymer resins, and those having side chains or terminals modified to have photosensitivity and heat-sensitive chemical reactivity ,
These are appropriately selected to achieve the above fusion at the overlap between adjacent colored layers. In any case, it is preferable to include a component that undergoes a curing reaction with heat, light, electron beams, radiation, etc., from the viewpoint of heat resistance when forming an electrode coating film in a later step, storage stability, and the like. For example, acrylic, methacrylic, unsaturated ester,
Examples thereof include vinyl type components such as styrene, condensation type components forming esters, amides and imides, and monofunctional or polyfunctional reaction components such as epoxy and isocyanate. Among these, particularly acrylic resins, even if they are thermosetting types, have a tendency that viscosity is reduced by heating and reflows so that they are easily flattened, and thus flattening steps such as polishing and pressing may be unnecessary after the formation of the colored layer. It can be said to be preferable because it can. However, also in the present invention, a protective layer can be formed by coating in order to promote adhesion because of forming a transparent electrode film on the color filter. In this case, the material used can be in the same range as that for forming the colored pattern.

As the solvent used in the ink composition, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol isopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol ethyl ether, diethylene glycol monobutyl ether, triethylene glycol. Examples thereof include glycol ether solvents such as monomethyl ether and triethylene glycol monoethyl ether, and isophorone.

Examples of the pigment used in the ink composition include soluble azo pigments, insoluble azo pigments, condensed azo pigments, phthalocyanine pigments, indigo pigments, anthraquinone pigments, perylene pigments, perinone pigments, dioxazine pigments, and quinacridone pigments. Examples thereof include condensed polycyclic pigments containing pigments, isoindolinone pigments, phthalone pigments, methine / azomethine pigments, or metal complex pigments, or any mixture thereof.

As the substrate 13 of the color filter 10,
A transparent substrate or a substrate having a reflective portion is used. As the transparent substrate, use a rigid material such as quartz glass, borosilicate glass, soda lime glass or low expansion glass, or a flexible material having flexibility such as a transparent resin film or an optical resin plate. You can
Among them, Corning 7059 glass is a material with a small coefficient of thermal expansion, has excellent dimensional stability and workability in high-temperature heat treatment, and is a non-alkali glass that does not contain an alkaline component in the glass. It is used for a matrix type LCD and is suitable for this counter electrode color filter. The substrate having a reflecting portion may be a transparent substrate on which a metal reflecting film is formed on one side, or the electrode portion may be formed of a metal having a high reflectance. When a substrate having a reflection part is used, it becomes a substrate for a reflection type color filter.

The color fill of the present invention is provided with a plurality of effective pixel portions having a predetermined shape as described above, and the fused portion of the color patterns is present in the area other than the effective pixel portions. This is to avoid color mixture in the effective pixel portion.

Next, the manufacturing of the color filter will be described with reference to FIG.
Will be described with reference to. In FIG. 7, first, a recess 72 formed in a pattern corresponding to a red colored layer on an intaglio 71.
Is filled with red ink R (FIG. 7A). Next, the blanket cylinder 61 fitted with the blanket 62 is attached to the intaglio plate 71.
The red ink R in the recess 72 is transferred onto the blanket cylinder 61 while being pressed while rotating upward (FIG. 7).
(B)). Then, the blanket cylinder 61 is attached to the transparent substrate 13 on which the black matrix 14 is formed in advance.
The red ink R is transferred to the position on the transparent substrate 13 where the red pattern 16R is to be formed (Fig. 7).
(C)). At this time, both ends of the red ink R are on the black matrix 14.

Next, the green ink G is transferred onto the blanket cylinder 61 in the same manner as described above using the intaglio plate 71 having the recesses 72 formed in the pattern corresponding to the green colored layer. Then, the blanket cylinder 61 is already in the red ink R.
To the transparent substrate 13 to which the transparent substrate 13 has been transferred,
The green ink G is transferred to the position where the upper green pattern 16G is to be formed (FIG. 7D). At this time, the green ink G
Both end portions of the red ink R have already been transferred onto the substrate 13 to form a fused portion with the end portion of the red ink R which is in an uncured state.

Similarly, the blue ink B is transferred onto the substrate 13. Also at this time, both ends of the blue ink,
The red ink R and the green ink G, which have already been transferred onto the substrate 13 and are in an uncured state, are fused with each other to form a fused portion.

Then, after the red ink R, the green ink G and the blue ink B are transferred, the three color inks are simultaneously heat-cured to form the colored layer 16. As described above, when forming the color filter of the present invention, 1
After each color printing is completed, ink of a predetermined number of colors is continuously printed on the same substrate without curing the ink, and then each color ink is heat-cured at one time to form the colored layer 16.
Are formed on the substrate. As a result, fusion is promoted in the adjacent portion, the step between adjacent colored layers is eliminated, and planarization can be achieved.

After forming the colored layer 16 as described above, the protective layer 18 may be formed. The protective layer 18 is for the purpose of smoothing the surface of the color filter 1, improving reliability, and preventing contamination of the liquid crystal layer when it is used in a liquid crystal display (LCD).
It may be formed using a transparent resin such as an ester resin, a urethane resin, an epoxy resin, or a polyimide resin, which is exemplified in the ink composition, or a transparent inorganic compound such as silicon dioxide or an organic silane polycondensate. it can. The thickness of such a protective layer is preferably about 0.5 to 50 μm.

As the transparent common electrode 19, an indium tin oxide (ITO) film or the like can be used. I
The TO film can be formed by a known method such as a vapor deposition method or a sputtering method, and the thickness thereof is preferably about 200 to 2000Å.

When the black matrix 14 is formed by the electroless plating method, the thickness of the matrix becomes thicker than that formed by the Cr plating method, so that the flattening is further promoted. Therefore, it is effective to perform roll pressing.

By appropriately setting the physical properties of the blanket cylinder and the ink when the ink is transferred from the intaglio plate 71 to the blanket cylinder 61, the intaglio plate 71 to the blanket cylinder 61 is set.
Ink transfer to and from blanket cylinder 61 to substrate 1
Ink transfer to the top of No. 3 can be almost 100%. More importantly, the ink once transferred to the substrate 13 does not transfer back to the blanket side again at the next color ink transfer. With this, there is no worry of contamination,
Also, the film thickness can be kept constant.

Further, in the present invention, the depth (plate depth) of the concave portion 72 of the intaglio plate 71 is preferably about 3.0 to 8.0 μm. In the example shown in FIG. 4, the printing order for forming the colored layer is red, green, and blue, but the printing order is not limited to this. Further, the transparent substrate on which the black matrix is previously formed is used, but the black matrix may be formed after the formation of the coloring layer.

The blanket used in the production of the color filter of the present invention includes the above-mentioned ink wettability, ink acceptability from the plate to the blanket, the ink transfer rate from the blanket to the substrate, and the backing of the uncured ink on the substrate. The optimum material may be selected in consideration of traps (reverse transition). For example, dimethyl siloxane, methyl vinyl siloxane, methyl fluoro vinyl siloxane, methyl phenyl vinyl siloxane, etc.
R, EPDM, blends and copolymerization systems with styrene-butadiene rubber (SBR), fluororubber, and NBR, EP
DM, SBR, etc., paraffin type and silicone oil type,
Small surface energy due to surface treatment such as baking of NBR, EPDM, SBR at 100 to 200 ° C. for about 1 hour in a mixture of stripping components such as aliphatic ester type and aliphatic amine type. The thing which formed the coat layer is mentioned.

Next, the present invention will be described in more detail with reference to experimental examples. Experimental Example 1 Three types of ink samples shown below were prepared in the following manner.
In addition, a part means a weight part.

Red ink pigment / anthraquinone red pigment 16 parts Disazo yellow pigment 4 parts Resin / ester acrylate 75 parts Solvent / ethylene glycol monoethyl ether 5 parts Green ink pigment / brominated cyanine green pigment 15 Part-Disazo yellow pigment ... 5 parts resin / ester acrylate ... 75 parts solvent / ethylene glycol monoethyl ether ... 5 parts Blue ink pigment / phthalocyanine blue pigment ... 15 parts-dioxazine violet pigment ... 1 part resin / ester acrylate ... 80 Parts Solvent / Ethylene glycol monoethyl ether ... 4 parts The mixture having the above composition was dispersed by a three-roll mill to obtain three kinds of ink samples.

Next, a blanket was prepared according to the following procedure. That is, a millable silicone rubber coating solution having the following composition was applied (thickness: about 0.5 mm) on a base material composed of a base cloth and a compression layer, followed by vulcanization at 170 ° C. for 10 minutes to obtain a surface. A rubber layer was formed to make a blanket. (Composition of silicone rubber coating liquid) -Methyl vinyl siloxane (Polymerization degree = 3000 to 10000) (TSB270-7U manufactured by Toshiba Silicone Co., Ltd.) ... 100 parts by weight-Vulcanizing agent 2,5-dimethyl-2,5-di (T-Butylperoxy) hexane (Toshiba Silicone Co., Ltd. TC-8) ... 0.5 parts by weight The above ink is cured in the order of R, B, and G by the intaglio offset printing method using the blanket. After three-color printing without using it, post-baking was performed in an oven at 200 ° C. for 40 minutes. As a result, a color filter with good flatness was obtained in which the boundary surfaces of the respective inks penetrated each other. The flatness at this time was a maximum height Rmax of 0.2 μm. In this case, the fused state of the color filters adjacent to the different color inks is shown in the drawing-substitute photographs showing the cross sections of the color filters in FIGS. Figure 8 shows B on top of R ink
The state where the ink is covered and the mixed phase is present at the ink interface and fusion is occurring is shown. In FIG. 9, the G ink is overlaid on the B ink, and the ink interface forms an envelope where there is a portion where the predetermined θ increases, and fusion occurs. In FIG. 10, the G ink is covered on the R ink, and the interface is also complicated, and it can be seen that the fusion has occurred.

Experimental Example 2 Preparation of ink sample Red ink pigment-anthraquinone red pigment 16 parts-disazo yellow pigment 4 parts resin epoxy acrylate 73 parts solvent triethylene glycol monoethyl ether 7 parts Green ink pigment -Brominated cyanine green pigment--15 parts-Disazo yellow pigment--5 parts Resin-Epoxy acrylate-73 parts Solvent-Triethylene glycol monoethyl ether--7 parts Blue ink pigment-Phthalocyanine blue pigment-15 parts-Dioxazine violet pigment 1 part Resin / epoxy acrylate 79 parts Solvent / triethylene glycol monoethyl ether 5 parts Using the same blanket as in Example 1, printing in the order of B, R, and G, then at 210 ° C. for 1 hour. post I baked. As a result, a sample was obtained in which the cross-sections of the color filter were intruded and compatible with each other.

Comparative Example 200 ° C. after printing R ink using the ink of Experimental Example 1
Post bake for 0 minutes, then print G ink 2
Post-baking was performed at 00 ° C. for 40 minutes, and finally, ink B was printed and post-baking was performed at 200 ° C. for 40 minutes to prepare a color filter. As a result, the result is
The boundary surface of each ink did not enter, resulting in a color filter with poor flatness. At this time, the flatness was a maximum height Rmax of 1.0 μm or more. The overlapping state of the color filters adjacent to the different color inks in this case is shown in the drawing-substitute photographs showing the cross sections of the color filters in FIGS. 11 to 13. FIG. 11 shows a state in which the G ink is covered on the R ink, FIG. 12 shows a state where the B ink is covered on the G ink, and FIG. 13 shows a state where the B ink is covered on the R ink. It is clearly seen that the fusion of the invention does not occur at these interfaces.

The cross-sectional photographs of the color filters in FIGS. 8 to 13 were taken by TEM observation. The observation equipment and the observation conditions are as follows. TEM observation (a) Observation equipment TEM main unit H-8100 type (manufactured by Hitachi, Ltd.) Lattice resolution 1.44Å Filament LaB ₆ holder Sample rotation holder H-8101R type Vacuum degree at observation 1 × 10 ^-4 Pa or less (b) Use observation conditions Lens system ZOOM mode Acceleration voltage 100Kv Beam current 10μA or less Convergence movable diaphragm 80μm Objective movable diaphragm 80μm Magnification 5.4kx (Direct magnification) Defocus 9990nm Film used FG ORTHOCHROMATIC
(Fuji Photo Film Co., Ltd.) Exposure time approx. 4 sec (± 2 sec)

[0039]

As described above in detail, in each color pattern of the color filter of the present invention, the ink compositions of different color patterns are fused in the adjacent color pattern and the adjacent part, and thereby, , The step at the adjacent portions of each color pattern due to coating disappears, and the flattening of each color of the printed colored layer is achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an active matrix liquid crystal display using a color filter manufactured according to the present invention.

FIG. 2 is a schematic sectional view of the liquid crystal display shown in FIG.

FIG. 3 is an enlarged partial sectional view of a color filter used in the liquid crystal display shown in FIG.

FIG. 4 is an enlarged partial sectional view of a color filter,
(A) shows the state of the color filter immediately after each colored pattern 16R, 16G, 16B was sequentially coated on the substrate, and (b) shows the final result after the subsequent steps. The state of an example of the color filter of the present invention is shown.

FIG. 5 is an enlarged partial cross-sectional view of a color filter, and in particular, is a view showing a fusion state in adjacent areas.

6A to 6C are enlarged partial cross-sectional views of a color filter, particularly showing a fusion state of the present invention in an adjacent portion. (D) And (e) is a figure which shows the ink overlapping state in the adjacent part of a prior art example.

FIG. 7 is a process drawing for explaining the manufacturing method of the color filter according to the present invention.

FIG. 8 is a transmission electron microscope image (magnification: 20000) of a cross section of the ink thin film in the ink adjacent portion of the color filter of the present invention.
2) is a photograph as a substitute for a drawing.

FIG. 9 is a transmission electron microscope image (magnification: 20000) of a cross section of the ink thin film in the ink adjacent portion of the color filter of the invention.
2) is a photograph as a substitute for a drawing.

FIG. 10 is a transmission electron microscope image (magnification: 20000) of a cross section of the ink thin film in the ink adjacent portion of the color filter of the present invention.
2) is a photograph as a substitute for a drawing.

FIG. 11 is a transmission electron microscope image (magnification: 20000) of a cross section of the ink thin film in the ink adjacent portion of the comparative example color filter.
2) is a photograph as a substitute for a drawing.

FIG. 12 is a transmission electron microscope image (magnification of 20000) of a cross section of the ink thin film in the ink adjacent portion of the comparative example color filter.
2) is a photograph as a substitute for a drawing.

FIG. 13 is a transmission electron microscope image (magnification: 20000) of a cross section of the ink thin film in the ink adjacent portion of the comparative color filter.
2) is a photograph as a substitute for a drawing.

FIG. 14 is a view showing a cross section of a colored layer of a conventional color filter.

[Explanation of symbols]

 7a, 7b, 7c ... Fusion part 13 ... Substrate 14 ... Black matrix 16R, 16G, 16B ... Coloring pattern

Claims (5)

[Claims] 1. A color filter in which a colored layer having two or more colors is printed on a substrate in a desired color pattern, and the ink compositions having different color patterns are provided in adjacent portions of each color pattern. A color filter characterized by being fused. 2. The color fill according to claim 1, wherein the color fill includes a plurality of effective pixel portions having a predetermined shape, and the fused portion of the colored patterns is present in a region other than the effective pixel portions. filter. 3. The ink composition according to claim 1, wherein the ink composition contains a component which undergoes a curing reaction, and has a property that the viscosity is reduced at least for a certain period by heating before curing. Color filter. 4. The color filter according to claim 1, further comprising a protective layer formed on the colored layer. 5. The color filter according to claim 1, wherein a transparent electrode film is formed on the colored layer directly or via a protective layer.