JPH1096809A - Production of color filter and producing device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of steps on the interface between a pixel and a black matrix or between pixels adjacent to each other and to prevent hardening failure on the surface part where pixels are deposited, by reflecting UV rays which is transmitted through a photosetting resin and irradiating the coating surface of the photosetting resin with the UV rays. SOLUTION: A colored photosetting resin 3 is applied all over a light- transmitting substrate 2 on which a black matrix 6 is preliminarily formed. Then the photosetting resin 3 is irradiated with UV rays 5 through a mask 1 and the back surface of the light-transmitting substrate 2 opposite to the photosetting resin 3 so as to form pixels. The UV rays 5 are limited as UV rays 5a by the mask 1 and are transmitted through the light-transmitting substrate 2a. The UV rays are further limited as UV rays 5b by a black matrix 6 on the substrate 2a to irradiate the photosetting resin 3. The UV rays 5b transmitted through the photosetting resin 3 and limited by the black matrix 6 are reflected or a UV reflection plate 4. The reflected light is allowed to irradiate the photosetting resin 3 as UV rays 5c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a color filter for converting display light of a display device such as a liquid crystal display device and a plasma display device into colored light, and an apparatus for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, the following two methods have been generally proposed as methods for manufacturing a color filter.

[0003] As a first method of manufacturing a color filter,
After a black matrix is formed on a glass substrate by a metal film or a resin film, a colored photocurable resin is attached thereon, and the photocurable resin is applied to the side of the glass substrate to which the photocurable resin is attached. Providing a mask that restricts irradiation light in order to light cure to an arbitrary shape, providing a light irradiation unit that shines light on the photocurable resin through the mask, and performing light curing by irradiating light to a required pixel shape, Thereafter, the unexposed portion is removed with a developing solution to form a pixel of the first color, and this operation is repeated three times for a required number of colors, for example, red, green, and blue for a color filter of a liquid crystal display device. Thus, three color filters were formed.

As a second method of manufacturing a color filter, a light-shielding pattern between display pixels is formed on a glass substrate, and then a pattern of a colored layer is formed with a photocurable ink to form a pattern on the glass substrate. The color layer is exposed and cured by light from the opposite side, and then the uncured or semi-cured ink on the light-shielding pattern is removed with a solvent, and these steps are repeated for several minutes to form a color filter. It has been proposed (JP-A-6-174913).
No.).

[0005]

In the case of the first method of manufacturing a color filter according to the prior art, as shown in FIG. 10, light is applied to the photocurable resin through a mask. A portion not irradiated with light is generated, and a gap 9 is formed between the black matrix 6 and the pixel 10. When this color filter is incorporated in a liquid crystal display device, light leaks from the gap 9.

In order to solve this problem, a method of enlarging the opening portion of the mask and irradiating light onto the black matrix 6 is also adopted.
Since the photo-curable resin of No. 0 is cured in an overlapping state, FIG.
As shown in FIG. 1, the film thickness of the photocurable resin on the black matrix 6 becomes a raised portion, and a step is generated between the display portion and the black matrix 6. Further, a step occurs between the pixel 10 and the adjacent pixel 10 via the black matrix 6. For this reason, when this color filter is used for a liquid crystal display device, when a thin-film transparent electrode is formed on the pixel 10, the transparent electrode is disconnected at a step portion on the pixel 10 and the black matrix 6. Thus, a color filter of high reliability and stable quality could not be obtained.

In order to solve this problem, as shown in FIG. 12, a transparent resin is applied on the step portion on the pixel 10 and the black matrix 6 so that the film thickness is larger than the step. A process of curing with light or heat was performed to form an overcoat 11. As a result, the surface of the overcoat 11 was flattened, and a transparent electrode could be formed thereon without disconnection. However, since the overcoat process is performed, there is a problem that the throughput is deteriorated and the production cost is increased.

In the case of the second method for manufacturing a color filter, the colored layer is exposed and cured by light from the opposite side of the glass substrate on which the colored layer pattern is formed. Alternatively, since the semi-cured ink is removed with a solvent, there is almost no level difference between the pixel 10 and the black matrix 6. However, since the light is emitted from the opposite side of the substrate, the light is absorbed by the colored layer, and at the stage where the light reaches the surface of the colored layer, the intensity of the light is reduced,
In order to cure on the surface of the colored layer, the irradiation intensity becomes insufficient,
The colored layer becomes uncured. Therefore, when removing the uncured colored layer with the solvent, the surface of the pixel 10 is also removed, and the pixel 1 is removed.
0 and the black matrix 6 cause a level difference,
When the transparent electrode is formed on the surface of the pixel 10, the transparent electrode is disconnected. When the transparent electrode is used as a color filter of a liquid crystal display device, the surface of the pixel 10 may be uneven. The light was scattered, which lowered the contrast and degraded the display quality.

The present invention solves the above problems,
There is no step between the pixel and the boundary of the black matrix or between adjacent pixels, and no overcoating is performed on the pixel and the black matrix.
Moreover, an object of the present invention is to provide a method of manufacturing a color filter which does not cause curing failure at the surface of a colored layer of a pixel, and an apparatus for manufacturing the same.

[0010]

According to a method of manufacturing a color filter of the present invention, a step of applying a photo-curable resin on a light-transmitting substrate and irradiating ultraviolet rays from the back side of the coated surface of the photo-curable resin. And a step of reflecting the ultraviolet light transmitted through the photocurable resin and irradiating the ultraviolet ray to the application surface of the photocurable resin, and a step of removing unnecessary portions of the photocurable resin. Therefore, the above object is achieved.

Preferably, the ultraviolet light is a selective light.

An apparatus for manufacturing a color filter according to the present invention is an apparatus for manufacturing a color filter for exposing and curing a colored photocurable resin. The object is achieved by providing means for irradiating ultraviolet light and reflecting means for reflecting the ultraviolet light transmitted through the photocurable resin and irradiating the photocurable resin again.

It is desirable that the ultraviolet light is irradiated with selective light.

Since the reflecting means is a plane mirror, the above object is achieved.

Since the reflecting means is a reflecting mirror having a concave portion, the above object is achieved.

Hereinafter, the operation of the present invention will be described.

The photocurable resin applied on the translucent substrate on which the black matrix is formed is irradiated with ultraviolet light from the back surface of the translucent substrate on which the photocurable resin is applied. By acting as a mask, the photocurable resin applied on the black matrix is set in an uncured or semi-cured state. On the other hand, the pixels surrounded by the black matrix are irradiated with ultraviolet rays, so that the photocurable resin is cured. However, the photocurable resin has a property of absorbing ultraviolet rays, and when the ultraviolet rays pass through the photocurable resin, the intensity of the ultraviolet rays is weakened. In the vicinity of the surface of the conductive resin, it is in a semi-cured state.

Next, since the ultraviolet light which has passed through the photocurable resin is reflected and irradiated onto the photocurable resin, the shortage of the irradiation density near the surface of the photocurable resin is compensated, and the photocurable resin is completely removed. To cure. By making the reflected light have an optical path inverted by 180 degrees with respect to the incident light, the reflected light is not irradiated on the black matrix, but is irradiated only on the pixels. Therefore, only the pixels can be completely cured while the unnecessary photocurable resin on the black matrix remains uncured or semi-cured. This can be realized by using a plane mirror as the reflecting means.

On the other hand, ultraviolet rays are not perfectly parallel rays,
Since the light is slightly spread, the reflected light is also irradiated on the black matrix, and the density of irradiation of the ultraviolet rays to the pixels is reduced. Therefore, by using a reflecting mirror having a concave portion as the reflecting means, the spread of ultraviolet light is corrected,
Ultraviolet rays originally radiated on the black matrix can be radiated to the pixels, and the reflected light can be efficiently used to cure the photocurable resin. Further, the photocurable resin on the black matrix can be in an uncured or semi-cured state.

The uncured or semi-cured photocurable resin on the black matrix has a weak adhesive force to the black matrix, so that it can be easily removed, and a step between the black matrix and the pixel can be eliminated. In addition, when removing unnecessary portions of the photocurable resin, the vicinity of the surface of the photocurable resin formed on the pixel is completely cured,
The vicinity of the surface is not removed, and a flat shape can be obtained on the pixel.

Further, since the ultraviolet rays are selectively irradiated to the pixels by the light-shielding mask, the first colored photo-curable resin is cured when a plurality of colored photo-curable resins are cured and formed on the pixels. The resin is uniformly applied to the entire surface of the light-transmitting substrate, and only the first colored pixels are irradiated with ultraviolet rays to be cured. Since the other pixels are not irradiated with ultraviolet rays and are in an uncured state, they can be removed at the same time as unnecessary photocurable resin on the black matrix is removed. Hereinafter, by repeating the processes for the second and third colored photocurable resins for the number of colors, a color filter having no steps between the black matrix and the pixels can be formed. Also, the colored photo-curable resins of adjacent pixels overlap,
There is no hardening.

[0022]

Embodiments of the present invention will be described below.

(Embodiment 1) FIG. 1 is a sectional view showing an embodiment of the present invention. The photocurable resin 3 is applied on the translucent substrate 2a on which the black matrix 6 is formed. Ultraviolet irradiation means (not shown) is provided on the rear surface side of the surface on which the photocurable resin 3 is applied on the translucent substrate 2a, and irradiates parallel ultraviolet rays 5. A mask 1 is provided between the translucent substrate 2a and the ultraviolet irradiating means (not shown) to limit the irradiation of the ultraviolet rays 5 to the translucent substrate 2a. The mask 1 is positioned and arranged so that an opening thereof corresponds to a pixel of the translucent substrate 2a. On the other hand, on the surface of the light-transmitting substrate 2a on which the photocurable resin 3 is applied, an ultraviolet reflector 4 for reflecting the ultraviolet light 5b transmitted from the light-transmitting substrate 2a is provided.

Next, a method for forming the first color filter in the pixel will be described.

On the light-transmitting substrate 2a on which the black matrix 6 is formed, the photocurable resin 3 colored in the first color is applied on the entire surface. Next, the photo-curable resin 3 is placed on the translucent substrate 2a.
The parallel ultraviolet rays 5 are irradiated to the pixels via the mask 1 from the back surface side of the surface on which the is applied by ultraviolet light irradiation means (not shown). The ultraviolet light 5 becomes the ultraviolet light 5a restricted by the mask 1, and the ultraviolet light 5 restricted by the mask 1
a transmits through the translucent substrate 2a. Furthermore, mask 1
5a is restricted by the black matrix 6 formed on the translucent substrate 2a.
Irradiated on the photocurable resin 3 as b. The ultraviolet rays 5 b restricted by the black matrix 6 that has passed through the photocurable resin 3 are reflected by the ultraviolet rays 5
Irradiate the photocurable resin 3 as c.

The photo-curable resin 3 has a property of absorbing ultraviolet rays. When the photo-curable resin 3 passes through the photo-curable resin 3, it is attenuated closer to the surface, and the irradiation density of the ultraviolet rays near the surface becomes insufficient. . The shortage of the irradiation density of the ultraviolet rays is compensated for by irradiating the photocurable resin 3 with the ultraviolet rays 5c reflected by the ultraviolet reflecting plate 4.

As described above, as shown in FIG. 2A, the photocurable resin 3a in the portion of the photocurable resin 3 irradiated with ultraviolet rays is cured.

Next, by performing development, the photocurable resin 3b in the portion of the photocurable resin 3 not irradiated with ultraviolet rays is removed.

When the ultraviolet rays 5c are reflected by the ultraviolet reflecting plate 4, they slightly diffuse and irradiate the photocurable resin 3 applied on the black matrix 6, but the irradiation intensity of the ultraviolet rays is very high. Because of the small level, the photocurable resin 3 on the black matrix 6 is not completely cured and can be removed during development. UV reflector 4
, A plane mirror can be used. When a plane mirror is used, the degree of parallelism of the ultraviolet light applied to the photocurable resin is required in order to suppress the diffusion of the reflected light by the ultraviolet reflector. As a result, in order to irradiate the parallel ultraviolet rays, the optical system becomes complicated and the entire apparatus becomes expensive, but the alignment between the plane mirror and the transparent substrate coated with the colored photocurable resin is performed. Is simplified, the device structure for alignment is simplified, the time required for alignment can be reduced, and productivity can be improved.

FIG. 2B shows a state in which the development processing has been performed to remove unnecessary portions. The first color filter is formed only in the pixel, and is not formed on the black matrix 6.

The principle of curing of the photocurable resin applied on the translucent substrate will be described in more detail. UV 5b
Is applied to the photocurable resin 3, the distribution of the amount of ultraviolet light transmitted in the thickness direction of the photocurable resin 3 is, for example, such that the ultraviolet light transmittance is attenuated by 50% for every 0.5 μm of film thickness. In the case of resin, it becomes as shown by the ultraviolet rays 5b in FIG.

On the other hand, when the ultraviolet ray 5b in the case of applying the present invention and the ultraviolet ray 5c reflected by the ultraviolet reflecting plate 4 are added to the photocurable resin having a pattern portion having a thickness of 1.5 μm, The distribution is as shown by the ultraviolet rays 5b + 5c in FIG. 7, and it is shown that the insufficient exposure of the surface is compensated by the reflected ultraviolet rays 5c.

The ultraviolet rays 5c are about 90% of the ultraviolet rays 5b because of the loss due to the reflection efficiency of the ultraviolet reflector 4 and the reflection on the surface of the photocurable resin 3.

When the ultraviolet rays 5c are reflected by the ultraviolet irradiation plate 4, they slightly diffuse and irradiate the photocurable resin 3 applied on the black matrix 6, which is similar to the ultraviolet rays 5a. Because the parallel light is used, the range of influence is small.

For example, even if the ultraviolet rays 5a originally have a half-value spread of 1 °, if the clearance between the translucent substrate 2 and the ultraviolet reflector 4 is 80 μm, the spread between them is about 1.4 μm. The spread when the light is reflected by the optical substrate 2 is about twice as large as about 2.8 μm.

Further, even if the reflected light is mostly irradiated on the black matrix 6 at the boundary between the pixel where the diffused light is the strongest and the black matrix 6, only the reflected ultraviolet rays 5c as shown in FIG. Since the level is smaller than that of the ultraviolet rays 5b + 5c including the transmission of light, the exposure amount can be adjusted to a level at which the photocurable resin 3 on the black matrix 6 is not completely cured even if the pixels are cured. At this time, it can be easily removed by applying a physical force such as a shower and a brush.

Next, a method of forming the second color filter in the pixel will be described.

FIG. 3 shows a state in which the opening of the mask 1 is positioned at the pixel of the second color in a state where the photocurable resin 7 of the second color is applied to the substrate on which the color filter of the first color is formed. ing.

The second color filter is formed in the same manner as the first color filter. When parallel ultraviolet rays 5 are irradiated from below the mask 1 from an ultraviolet irradiation means (not shown), the ultraviolet rays 5 limited by the mask 1 are irradiated.
a transmits through the translucent substrate 2b. The ultraviolet rays 5a restricted by the mask 1 are applied to the photo-curable resin 7 as the ultraviolet rays 5b restricted by the black matrix 6 formed on the translucent substrate 2b. The ultraviolet rays 5b transmitted through the photocurable resin 7 are irradiated on the photocurable resin 7 as ultraviolet rays 5c reflected by the ultraviolet reflector 4.

The photocurable resin 7 has a property of absorbing ultraviolet rays. When the ultraviolet rays 5b pass through the photocurable resin 7, it is attenuated closer to the surface, and the irradiation density of the ultraviolet rays near the surface becomes insufficient. . The shortage of the irradiation density of the ultraviolet rays is compensated for by irradiating the photocurable resin 7 with the ultraviolet rays 5c reflected by the ultraviolet reflecting plate 4.

As described above, as shown in FIG. 4A, the photocurable resin 7a in the portion of the photocurable resin 7 irradiated with ultraviolet rays is cured.

Next, by performing the development, the photocurable resin 7b in the portion of the photocurable resin 7 not irradiated with ultraviolet rays is removed.

When the ultraviolet rays 5c are reflected by the ultraviolet irradiation plate 4, the ultraviolet rays 5c slightly diffuse and irradiate the photocurable resin 7 applied on the black matrix 6, but the irradiation intensity of the ultraviolet rays is extremely high. Because of the small level, the photocurable resin 7 on the black matrix 6 is not completely cured and can be removed during development.

FIG. 4B shows a state in which the unnecessary portion is removed by performing the developing process. The color filter of the second color is formed only in the pixel, and is not formed on the black matrix 6.

Next, a method of forming a third color filter in a pixel will be described.

FIG. 5 shows a state in which the third color photocurable resin 8 is applied to the substrate on which the first color filter and the second color filter are formed, and the opening of the mask 1 is changed to the third color. It is positioned so as to be positioned at the pixel.

The third color filter is formed in the same manner as the method of forming the first and second color filters. When parallel ultraviolet rays 5 are irradiated from below the mask 1 from an ultraviolet irradiation means (not shown), the ultraviolet rays 5a restricted by the mask 1 pass through the translucent substrate 2c. The ultraviolet rays 5a restricted by the mask 1 are applied to the photo-curable resin 8 as ultraviolet rays 5b restricted by the black matrix 6 formed on the translucent substrate 2c. The ultraviolet rays 5b transmitted through the photo-curable resin 8 are radiated to the photo-curable resin 8 as the ultraviolet rays 5c reflected by the ultraviolet reflector 4.

The photo-curable resin 8 has a property of absorbing ultraviolet rays. When the ultraviolet rays 5b pass through the photo-curable resin 8, the light is attenuated closer to the surface, and the irradiation density of the ultraviolet rays near the surface becomes insufficient. . The shortage of the irradiation density of the ultraviolet rays is compensated for by irradiating the photocurable resin 8 with the ultraviolet rays 5c reflected by the ultraviolet reflecting plate 4.

As described above, as shown in FIG. 6A, the photocurable resin 8a in the portion of the photocurable resin 8 irradiated with ultraviolet rays is cured.

Next, by performing development, the photocurable resin 8b in the portion of the photocurable resin 8 not irradiated with ultraviolet rays is removed.

When the ultraviolet rays 5c are reflected by the ultraviolet irradiation plate 4, they slightly diffuse and irradiate the photocurable resin 8 applied on the black matrix 6, but the irradiation intensity of the ultraviolet rays is very high. Because of the small level, the photocurable resin 8 on the black matrix 6 is not completely cured and can be removed during development.

FIG. 6B shows a state in which the unnecessary portion is removed by performing the developing process. The color filter of the third color is formed only in the pixel, and is not formed on the black matrix 6.

Therefore, the color filters of three colors are formed independently of the pixels, and the color filters are not formed on the black matrix, so that there is no step between the black matrix and the pixels.

In the present embodiment, a colored photocurable resin is applied over the entire surface of the light-transmitting substrate, and the photocurable resin is selected from behind the surface on which the photocurable resin is applied via a mask. Ultraviolet light was applied to the pixels. The present invention is not limited to this embodiment. For example, after a colored photocurable resin is selectively applied only to specific pixels by a printing method or an inkjet method, a surface to which the photocurable resin is applied is applied. The same effect can be obtained by irradiating the entire surface of the light-transmitting substrate with ultraviolet light without using a mask from the back side of the substrate.

(Embodiment 2) Another embodiment of the present invention will be described.

FIG. 8 is a sectional view of another embodiment of the present invention. The sectional view shown in FIG. 8 is almost the same as the sectional view shown in FIG. The difference is that an ultraviolet reflecting plate 12 having a concave portion corresponding to the mask shape is provided on the surface of the light-transmitting substrate 2a on which the photocurable resin 13 is applied.

Next, a method of forming a color filter on a pixel will be described.

When parallel ultraviolet rays 5 are irradiated from below the mask 1 from an ultraviolet irradiation means (not shown), the ultraviolet rays 5a restricted by the mask 1 pass through the light transmitting substrate 2a. The ultraviolet rays 5a restricted by the mask 1 are applied to the photo-curable resin 13 as ultraviolet rays 5b restricted by the black matrix 6 formed on the translucent substrate 2a. The ultraviolet rays 5b that have passed through the photocurable resin 13 are radiated to the photocurable resin 13 as ultraviolet rays 5d reflected by the ultraviolet reflector 12.

The photo-curable resin 13 has a property of absorbing ultraviolet rays. When the ultraviolet rays 5b pass through the photo-curable resin 13, the light is attenuated closer to the surface, and the irradiation density of the ultraviolet rays near the surface becomes insufficient. . The shortage of the irradiation density of the ultraviolet rays is compensated for by irradiating the photo-curable resin 13 with the ultraviolet rays 5d reflected by the ultraviolet reflecting plate 12.

As described above, as shown in FIG. 9A, the photocurable resin 13a in the portion of the photocurable resin 13 irradiated with ultraviolet rays is cured.

Next, the photocurable resin 13b in the portion of the photocurable resin 13 not irradiated with ultraviolet rays is removed by development.

The ultraviolet reflector 12 has a concave shape in order to prevent the reflected ultraviolet rays 5 d from diffusing and irradiating the photocurable resin 13 applied on the black matrix 6. By making the concave shape, the diffusion of the reflected light can be suppressed by the ultraviolet reflecting plate, so that the parallelism with respect to the ultraviolet light applied to the photocurable resin can be relaxed as compared with the plane mirror. Because of this, it is necessary to strictly align the concave shape and the light-transmitting substrate coated with the colored photocurable resin, so that the device structure for the alignment becomes complicated, and furthermore, Although the time required for alignment becomes longer, in order to irradiate parallel ultraviolet rays,
The optical system is simpler than in the case of a plane mirror, and the entire apparatus can be inexpensive.

FIG. 9B shows a state in which unnecessary portions have been removed by performing the developing process. The first color filter is formed only on the pixel, and is not formed on the black matrix 6.

By forming the second color filter and the third color filter in the same manner as in the first color, no color filter is formed on the black matrix, and there is no step between the black matrix and the pixel.

[0065]

The method for manufacturing a color filter according to the present invention comprises:
A step of applying a photocurable resin on the translucent substrate, a step of irradiating ultraviolet rays from the back side of the application surface of the photocurable resin, and reflecting the ultraviolet rays transmitted through the photocurable resin to reflect the ultraviolet rays. Since the method includes a step of irradiating the ultraviolet ray to the application surface of the photocurable resin and a step of removing an unnecessary portion of the photocurable resin, the photocurable resin on the pixel is completely cured, and Is not cured. Therefore, the photocurable resin on the black matrix is completely removed, so that there is no step between the black matrix and the pixel, and there is no step between adjacent pixels. Thus, it is not necessary to perform an overcoating process which has been conventionally formed to eliminate the influence of the step.
Therefore, an inexpensive and high-quality color filter can be provided.

Further, since ultraviolet rays are selectively irradiated to the pixels by the light-shielding mask, a plurality of colored photo-curable resins can be independently cured for the pixels, and the application of the number of colors and the irradiation of the ultraviolet rays can be performed. , Just by removing unnecessary parts,
A color filter can be formed. At this time, since each color is performed independently, the colored photocurable resin does not overlap and cure on the black matrix, and does not overlap and cure even at the pixels. Therefore, a high-quality color filter in which each color is completely independent for each pixel can be provided.

The apparatus for manufacturing a color filter according to the present invention comprises means for irradiating the photocurable resin with ultraviolet rays from the back side of the photocurable resin application surface, and reflecting the ultraviolet rays transmitted through the photocurable resin. And a reflection means for irradiating the photocurable resin again, so that there is no step between the black matrix and the pixel, and there is no step between adjacent pixels. Can be provided.

Further, by providing a means for selectively irradiating the pixels with ultraviolet rays using a light-shielding mask or the like, a high-quality color filter in which a plurality of colored photo-curable resins are independently cured for the pixels can be easily obtained. It can be provided in a device configuration.

Since the means for reflecting the ultraviolet rays uses a plane mirror, the ultraviolet rays can be re-irradiated to the photocurable resin with a simple apparatus configuration. Therefore, the photocurable resin on the pixel can be completely cured.

In addition, by using a reflecting mirror having a concave portion as a means for reflecting ultraviolet rays, it is possible to efficiently irradiate diffused ultraviolet rays to pixels with a simple device configuration. Therefore, only the photocurable resin on the pixels can be completely cured without irradiating the photocurable resin on the black matrix with ultraviolet rays.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an exposure state of a first color according to an embodiment of the present invention.

FIG. 2A is a cross-sectional view illustrating a state in which a first-color photocurable resin is cured according to the present invention. FIG. 3B is a cross-sectional view illustrating a state in which the first-color photocurable resin is developed according to the present invention.

FIG. 3 is a cross-sectional view illustrating an exposure state of a second color according to the embodiment of the present invention.

FIG. 4A is a cross-sectional view illustrating a state where a second-color photocurable resin is cured according to the present invention. FIG. 4B is a cross-sectional view illustrating a state in which the second color photocurable resin is developed according to the present invention.

FIG. 5 is a cross-sectional view illustrating an exposure state of a third color according to the embodiment of the present invention.

FIG. 6A is a cross-sectional view illustrating a state where a third-color photocurable resin is cured according to the present invention. FIG. 4B is a cross-sectional view illustrating a state where the third color photocurable resin is developed according to the present invention.

FIG. 7 is a diagram illustrating the distribution of the amount of transmitted ultraviolet light in the thickness direction of the photocurable resin.

FIG. 8 is a cross-sectional view illustrating an exposure state of a first color according to another embodiment of the present invention.

FIG. 9A is a cross-sectional view illustrating a state in which a first-color photocurable resin is cured according to the present invention. FIG. 3B is a cross-sectional view illustrating a state in which the first-color photocurable resin is developed according to the present invention.

FIG. 10 is a cross-sectional view of a color filter that causes light leakage due to a pattern shift.

FIG. 11 is a cross-sectional view of a color filter manufactured by a conventional technique.

FIG. 12 is a cross-sectional view illustrating a state in which an overcoat is applied to a color filter manufactured by a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mask 2, 2a, 2b, 2c Transparent substrate 3, 3a, 3b Photocurable resin 4 Ultraviolet reflector 5, 5a, 5b, 5c Ultraviolet 6 Black matrix 7, 7a, 7b Photocurable resin 8, 8a 8b Photo-curable resin 9 Gap 10 Pixel 11 Overcoat 12 Ultraviolet reflector with recess 13, 13a, 13b Photo-curable resin

Claims (6)

[Claims] 1. A step of applying a photocurable resin on a light-transmitting substrate, a step of irradiating ultraviolet rays from a back side of a surface on which the photocurable resin is applied, and a step of applying the ultraviolet rays transmitted through the photocurable resin. A step of irradiating the ultraviolet ray to the surface of the photocurable resin after reflecting the light, and a step of removing an unnecessary portion of the photocurable resin. 2. The method according to claim 1, wherein the ultraviolet light is selected light. 3. An apparatus for manufacturing a color filter for exposing and curing a colored photocurable resin, comprising: means for irradiating the photocurable resin with ultraviolet rays from a back surface side of a surface to which the photocurable resin is applied; And a reflecting means for reflecting the ultraviolet light transmitted through the photocurable resin and irradiating the photocurable resin again. 4. The color filter manufacturing apparatus according to claim 3, wherein the ultraviolet light irradiates selective light. 5. The color filter manufacturing apparatus according to claim 3, wherein said reflection means is a plane mirror. 6. The apparatus for manufacturing a color filter according to claim 3, wherein said reflecting means is a reflecting mirror having a concave portion.