JP2001100221A - Liquid crystal display device and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily form a resin layer having uniform thickness which functions as a spacer. SOLUTION: The liquid crystal display devoice 30 has a first substrate 17 prepared by successively forming a TFT circuit layer 1, insulating layer 2, pixel electrode 3 and alignment film10 on a transparent substrate 4, and a second substrate 18 prepared by forming a color filter layer 5 and a multilayered resin layer 19 on a transparent substrate 7 and further successively laminating a counter electrode and an alignment film 11 thereon. The first substrate 17 and the second substrate 18 are laminated while the alignment films 10, 11 are opposite to each other, and a liquid crystal 8 is supplied between the substrates. The multilayered resin layer 19 is produced with the color filter layer 5 by a dry film laminate method by laminating and adhering a dry film to the transparent substrate 7, peeling the supporting film, and exposing and developing the film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a color liquid crystal display device and a method for manufacturing the same.

[0002]

2. Description of the Related Art A liquid crystal display device has a pair of substrates facing each other, and the distance between the substrates is kept constant by spacers. FIG. 11 is a sectional view schematically showing a conventional liquid crystal display device 41. The liquid crystal display device 41 shown in FIG. 11 is, for example, an active matrix type liquid crystal display device, and has a first substrate 33 and a second substrate. First substrate 33
Is formed by laminating an active element such as a thin film transistor (TFT) element, a TFT circuit layer 21 including a gate wiring and a source wiring, an insulating layer 22, a picture element electrode 23, and an alignment film 31 in this order on a transparent substrate 24. You. The second substrate 34 has a color filter layer 25 on the transparent substrate 27.
The counter electrode 26 and the alignment film 32 are stacked in this order. The two substrates 33 and 34 are provided with the respective alignment films 31 and
In a state where the substrates 32 face each other, a constant substrate gap (cell gap) is maintained by the beads 29, and the substrates are bonded by a sealant. The liquid crystal 28 is filled between the two substrates 33 and 34, and the liquid crystal injection port is sealed with a sealant. The beads 29 having a small particle diameter serve as spacers for the substrates 33 and 34.
Is sprayed on the alignment film of one of the substrates.
In addition to the beads 29, there is a liquid crystal display device using a fiber as a spacer.

[0003]

In a configuration in which beads or fibers are used as spacers of a liquid crystal display device, it is difficult to uniformly disperse the spacers. If the spacers are not evenly distributed, the display contrast is reduced and color unevenness is caused. Occurs. Further, it is difficult to dispose the spacer at a specific position, and light leaks from the spacer disposed in a picture element area directly related to display, and the contrast of display is reduced.

On the other hand, Japanese Patent Application Laid-Open No. 56-1403 discloses a technique in which the same resin layer as the color filter layer is laminated to secure the thickness and function as a spacer.
No. 24, JP-A-63-82405, JP-A-4
-93924 and JP-A-5-196946. The spacer formed by laminating the same resin layer as the resin layer constituting the color filter layer can be easily arranged at a predetermined position, and can easily impart light shielding properties. Therefore, it is possible to prevent a reduction in display contrast and the occurrence of color unevenness.
However, Japanese Patent Application Laid-Open Nos.
In the prior art including the techniques disclosed in JP-A-82405, JP-A-4-93924 and JP-A-5-196946, the color filter layer is generally manufactured by a spin coating method. The film thickness at the edge becomes thicker than the film thickness at the center of the filter layer. For this reason, the spacer formed by the spin coating method in the same manner as the color filter layer has a non-uniform thickness of the first spacer.
It is manufactured by laminating second and third resin layers having non-uniform film thickness on the above resin layer. Therefore, the uniformity of the thickness of the spacer is low, and the display contrast is reduced and the color is uneven. In the spin coating method, it takes time until the resin dries, and the manufacturing time of the liquid crystal display device is prolonged.

A technique for forming a spacer by a laminating method is disclosed in Japanese Patent Application Laid-Open Nos. 5-1256 and 7-325298. In these conventional techniques, a spacer having a uniform thickness can be obtained. However, since a counter electrode and an alignment film are formed on the color filter layer and the spacer is formed thereon, The step of forming the spacer is a separate step, and the step of forming the spacer must be added in the manufacture of the liquid crystal display device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a liquid crystal display device capable of forming a resin layer having a uniform thickness functioning as a spacer without adding a step, and to provide an excellent display quality having such a resin layer. To provide a liquid crystal display device.

[0007]

According to the present invention, a liquid crystal layer is interposed between a pair of substrates disposed opposite to each other at a predetermined interval, and the liquid crystal on one of the substrates is provided. In the method of manufacturing a liquid crystal display device having a color filter layer on the layer side surface, after a film on which a resin film is provided on a sheet-like support is pressed onto the liquid crystal layer side surface of one substrate,
The sheet-like support is peeled off, the resin film is transferred onto one substrate, and patterned into a predetermined shape to form a resin layer, and this is repeated to form a collar composed of a plurality of resin layers arranged in a plane. A method for manufacturing a liquid crystal display device, comprising forming a laminated resin layer formed by laminating two or more resin layers at the same time as forming a filter layer.

According to the present invention, a film in which a resin film is provided on a sheet-like support is pressure-bonded to the liquid crystal layer side surface of one of the substrates, and then the sheet-like support is peeled off so that the resin film becomes one side. A resin film is formed on one substrate by a dry film laminating method of transferring onto a substrate, and the resin film is patterned into a predetermined shape to form a resin layer, and a resin layer and a laminated resin layer constituting a color filter layer are formed. The constituent resin layer is formed at the same time. By repeating this process,
A laminated resin layer formed by laminating two or more resin layers and a color filter layer formed by arranging a plurality of resin layers in a plane can be simultaneously formed.

A portion of the laminated resin layer protruding from the surface of the color filter layer functions as a spacer, and regulates a space between the pair of substrates. Therefore, in the present invention, the color filter layer and the spacer can be formed at the same time, and the productivity of the liquid crystal display device is improved.

Further, in such a dry film laminating method, a dry film having a resin film having a uniform film thickness is adhered to a substrate by pressing or the like, so that the resin layer becomes more uniform in thickness than the conventional spin coating method. The uniformity of the thickness of the laminated resin layer formed by overlapping a plurality of resin layers is increased. Therefore, the uniformity of the distance between the substrates is improved, and a decrease in display contrast can be prevented, so that a liquid crystal display device with high display quality can be obtained.

Further, in the spin coating method, it is necessary to dry the resin. However, in the dry film laminating method according to the present invention, the dry film in which the resin film is formed in advance is adhered to the substrate by pressing or the like. In addition, no time is required for this.

Each of the resin layers constituting the laminated resin layer can be easily formed at a predetermined position when the resin film transferred by the dry film laminating method is patterned by exposure and development. It is possible to arrange the laminated resin layers uniformly, and it is possible to maintain a uniform substrate interval as compared with a configuration in which spacers such as beads or fibers are scattered. Therefore, in the manufacturing method according to the present invention, it is possible to prevent a decrease in display contrast and to obtain a liquid crystal display device with high display quality.

Further, the present invention is characterized in that the laminated resin layer is formed in a substantially conical shape. According to the present invention, each resin layer constituting the laminated resin layer, when patterning the resin film transferred by the dry film lamination method,
Since the sizes can be different, the laminated resin layer can be formed in a substantially pyramid shape.

An alignment film is formed on the outermost surface of the substrate while the laminated resin layer is formed. The alignment film is formed by stacking a liquid crystal alignment material layer on a substrate and performing a process called rubbing in which the surface is rubbed with a cloth or the like. For example, in the configuration in which the alignment film is formed on the rectangular parallelepiped spacer, a large area where the rubbing process cannot be performed is generated on the downstream side of the alignment film in the rubbing process direction, and the rubbing process is largely uneven. In the present invention, since the laminated resin layer is formed in a substantially conical shape and the spacer portion has a gentle shape, the rubbing treatment of the alignment film is easier to be performed than in the case of a rectangular parallelepiped or the like, and unevenness in the rubbing treatment is reduced. be able to.

Further, the laminated resin layer of the present invention comprises a blue resin layer, and the blue resin layer is formed so as to extend to the lower outer edge of the laminated resin layer.

When a gap is formed between the laminated resin layer and the color filter layer, light transmitted through the gap generates a bright spot on the display of the liquid crystal display device, which causes a deterioration in display quality. According to the present invention, the laminated resin layer is configured to include a blue resin layer, and the blue resin layer is formed so as to extend to the lower outer edge of the laminated resin layer. When there is a gap between the color filter layer and
The gap can be filled with a light-shielding blue resin. By doing so, the blue resin layer blocks the light passing through the gap, and prevents a bright point of display, thereby improving the display quality of the liquid crystal display device.

Further, the laminated resin layer of the present invention comprises a blue resin layer, and the blue resin layer is formed last in the resin layers constituting the laminated resin layer. .

In a liquid crystal display device, a black matrix may be formed after forming a color filter layer in order to shield a gap between filters of a color filter layer or a defective portion of the filter from light. The black matrix is formed, for example, by forming a black resin film made of an ultraviolet curable resin on a color filter layer, exposing the resin film from the back surface, and curing the black resin that has entered gaps between filters or defective portions of the filters. It is formed by doing. The black matrix formed in this manner is also arranged in a small gap between the filters, and can prevent a bright point of display.

According to the present invention, the laminated resin layer includes a blue resin layer, and the blue resin layer is formed after forming another resin layer constituting the laminated resin layer. When forming a blue resin layer, by exposing from the back side as in the above-described black matrix, the gap between the filters or the defective portion of the filter can be filled with a high light-shielding blue resin, and the black matrix is formed. Even if it is not formed, a bright point of display can be prevented. Therefore, it is possible to omit the above-described black matrix forming step and to reduce the number of steps.

The color filter layer and the laminated resin layer of the present invention include a red resin layer, a green resin layer, and a blue resin layer, and include a red resin layer, a green resin layer, and a blue resin. It is characterized by being formed in the order of layers.

According to the present invention, the color filter layer and the laminated resin layer include a red resin layer, a green resin layer, and a blue resin layer. The red resin layer, the green resin layer, and the blue resin layer require a longer time in the heat treatment in order of the blue resin layer, the green resin layer, and the red resin layer. For this reason, when the red resin layer, the green resin layer, and the blue resin layer are formed in this order, the red resin layer is heated even in the heat treatment of the green resin layer and the blue resin layer, and the green resin layer is heated. The layer is also heated during the heat treatment of the blue resin layer. Therefore, the state after the formation of the color filter layer and the laminated resin layer becomes uniform in the resin layers of each color, and the heat treatment can be performed effectively.

In the laminated resin layer of the present invention, a first resin layer is formed, a second resin layer larger than the first resin layer is formed on the first resin layer, and a second resin layer is formed. A third resin layer having the same size as the second resin layer is formed on the layer, and the first, second, and third resin layers are formed in this order in green, blue, and red, or green, It has red and blue colors.

According to the present invention, the size of each resin layer constituting the laminated resin layer can be varied when the resin film transferred by the dry film laminating method is patterned. And the third resin layer can have the same size, and the first resin layer can be formed smaller than the second and third resin layers. By doing so, the laminated resin layer can be formed in a substantially conical shape, and the spacer portion has a gentle shape. Therefore, the rubbing treatment of the alignment film is easily performed, and unevenness of the rubbing treatment can be reduced.

Further, the laminated resin layer is formed to include a red resin layer and a blue resin layer. Since the red resin layer and the blue resin layer have the same size, sufficient light-shielding properties can be obtained.
Light leakage can be reduced. Light leakage outside the picture element area of the liquid crystal display device causes a decrease in display quality such as a decrease in contrast. In the present invention, since the laminated resin layer has a sufficient light-shielding property and can prevent a decrease in display quality, a liquid crystal display device with high display quality can be obtained.

Further, if the laminated resin layer is formed in a region that blocks incident light to an active element such as a thin film transistor element, malfunction or unstable operation of the active element due to light can be prevented. In addition, when the wiring is formed in a region that blocks light incident on wirings such as a gate wiring and a source wiring, reflection of light by the wirings can be prevented, and display quality of the liquid crystal display device can be improved.

In the laminated resin layer of the present invention, a first resin layer is formed, a second resin layer smaller than the first resin layer is formed on the first resin layer, and a second resin layer is formed. A third resin layer having the same size as the first resin layer is formed on the layer, and the first, second, and third resin layers are arranged in this order in blue, green, and red, or red, It has a green and blue color.

According to the present invention, the size of each resin layer constituting the laminated resin layer can be varied when the resin film transferred by the dry film laminating method is patterned. And the third resin layer can have the same size, and the second resin layer can be formed smaller than the first and third resin layers. By doing so, the laminated resin layer can be formed in a substantially conical shape, and the spacer has a gentle shape. Therefore, the rubbing treatment of the alignment film is easily performed, and unevenness of the rubbing treatment can be reduced.

Further, since the red resin layer and the blue resin layer having the same size are laminated, a laminated resin layer having excellent light shielding properties can be formed.

In the laminated resin layer of the present invention, a first resin layer is formed, and a second resin layer having the same size as the first resin layer is formed on the first resin layer. A third resin layer smaller than the second resin layer is formed on the first resin layer, and the first, second, and third resin layers are arranged in this order in blue, red, and green, or red, It is characterized by having blue and green colors.

According to the present invention, the size of each resin layer constituting the laminated resin layer can be varied when patterning the resin film transferred by the dry film laminating method. And the second resin layer can have the same size, and the third resin layer can be formed smaller than the first and second resin layers. By doing so, the laminated resin layer can be formed in a substantially conical shape, and the spacer has a gentle shape. Therefore,
Rubbing of the alignment film is facilitated, and unevenness of the rubbing can be reduced.

Further, since the red resin layer and the blue resin layer having the same size are laminated, a laminated resin layer having excellent light shielding properties can be formed.

Further, the present invention is characterized in that the laminated resin layer is formed so as to avoid a region facing the pixel electrode on the other substrate.

According to the present invention, each resin layer constituting the laminated resin layer can be easily formed at a predetermined position when patterning the resin film transferred by the dry film laminating method. By forming the laminated resin layer so as to avoid the region facing the pixel electrode and not arranging the laminated resin layer in the pixel region directly related to display, it is possible to prevent a decrease in the aperture ratio of the liquid crystal display device. ,
The display quality can be improved.

Further, the present invention is characterized in that a counter electrode is formed so as to cover the laminated resin layer and the color filter layer of the one substrate.

In the related art in which the counter electrode and the alignment film are formed on the color filter layer and the spacer is formed thereon, it is impossible to form the color filter layer and the spacer at the same time. On the other hand, in the present invention, after the laminated resin layer functioning as a spacer and the color filter layer are formed at the same time, the counter electrode is formed so as to cover them. Therefore, in the manufacturing method according to the present invention,
The number of steps can be reduced as compared with the conventional technology.

The present invention also provides a color filter layer comprising a pair of substrates, a plurality of resin layers provided in a plane on one surface of one of the pair of substrates, and a color filter layer formed on one surface of the one substrate. A laminated resin layer composed of a plurality of resin layers provided by laminating, an alignment film provided on the outermost surface of one substrate and an outermost surface of the other substrate, and a liquid crystal layer interposed between the alignment films of the pair of substrates. Wherein the laminated resin layer has a substantially pyramid shape.

According to the present invention, since the laminated resin layer has a substantially conical shape, the inclination of the spacer portion is gentler than that of a rectangular parallelepiped spacer. Therefore, the alignment film provided on the outermost surface of the substrate while the resin layer is laminated also becomes gentle, and the alignment film is uniformly rubbed. If the rubbing treatment of the alignment film is uneven, the liquid crystal is not uniformly aligned, and the display quality is reduced. In the present invention, the liquid crystal is uniformly aligned by the uniformly rubbed alignment film, so that a liquid crystal display device with high display quality can be obtained.

Further, the laminated resin layer of the present invention comprises a blue resin layer, and the blue resin layer is formed so as to spread to the lower outer edge of the laminated resin layer.

According to the present invention, the laminated resin layer includes a blue resin layer, and the blue resin layer is formed so as to extend to the lower outer edge of the laminated resin layer. When a gap is formed between the resin layer and the color filter layer, the gap can be filled with a blue resin having high light-shielding properties. By doing so, the blue resin layer blocks the light passing through the gap, and prevents a bright point of display, thereby improving the display quality of the liquid crystal display device.

Further, the laminated resin layer of the present invention comprises a first resin layer, a second resin layer formed on the first resin layer, the second resin layer being larger than the first resin layer, and a second resin layer. And a third resin layer having the same size as the second resin layer formed on the first resin layer. The first, second, and third resin layers are arranged in this order.
It is characterized by having green, blue and red or green, red and blue colors.

According to the present invention, the laminated resin layer comprises
And the third resin layer have the same size, and the first resin layer is smaller than the second and third resin layers. Therefore, the laminated resin layer has a substantially conical shape, and the inclination of the spacer is gentle. Therefore, the alignment film provided on the outermost surface of the substrate while the resin layer is formed is uniformly rubbed. In the alignment film uniformly rubbed, the liquid crystal is uniformly aligned, so that a liquid crystal display device with high display quality can be obtained.

The laminated resin layer includes a red resin layer and a blue resin layer. Since the red resin layer and the blue resin layer have the same size, sufficient light-shielding properties are obtained and light leakage is reduced. can do. Light leakage outside the picture element area of the liquid crystal display device causes a decrease in display quality such as a decrease in contrast. In the present invention, the laminated resin layer has a sufficient light-shielding property and can prevent a decrease in display quality, so that a liquid crystal display device with high display quality can be obtained.

Further, when the laminated resin layer is formed in a region that blocks incident light to an active element such as a thin film transistor element, malfunction or unstable operation of the active element due to light can be prevented. Also, gate wiring,
If it is formed in a region that blocks incident light to a wiring such as a source wiring, reflection of light by the wiring can be prevented, and display quality of the liquid crystal display device can be improved.

The laminated resin layer of the present invention comprises a first resin layer, a second resin layer formed on the first resin layer, the second resin layer being smaller than the first resin layer, and a second resin layer. And a third resin layer having the same size as the first resin layer formed on the first resin layer. The first, second, and third resin layers are arranged in this order:
It has a color of blue, green and red, or red, green and blue.

According to the present invention, the laminated resin layer comprises
And the third resin layer have the same size, and the first resin layer is smaller than the second and third resin layers. Therefore, the laminated resin layer has a substantially conical shape, and the inclination of the spacer is gentle. Therefore, the alignment film provided on the outermost surface of the substrate while the resin layer is formed is uniformly rubbed. In the alignment film uniformly rubbed, the liquid crystal is uniformly aligned, so that a liquid crystal display device with high display quality can be obtained.

Furthermore, since the laminated resin layer includes a red resin layer and a blue resin layer, and the red resin layer and the blue resin layer have the same size, sufficient light-shielding properties can be obtained.

The laminated resin layer of the present invention comprises a first resin layer, a second resin layer formed on the first resin layer and having the same size as the first resin layer, and a second resin layer. And a third resin layer smaller than the second resin layer, which is formed on the first resin layer, and the first, second, and third resin layers are arranged in this order:
It is characterized by having blue, red and green or red, blue and green colors.

According to the present invention, the laminated resin layer comprises the first
And the second resin layer have the same size, and the third resin layer is smaller than the first and second resin layers. Therefore, the laminated resin layer has a substantially conical shape, and the inclination of the spacer is gentle. Therefore, the alignment film provided on the outermost surface of the substrate while the resin layer is formed is uniformly rubbed. In the alignment film uniformly rubbed, the liquid crystal is uniformly aligned, so that a liquid crystal display device with high display quality can be obtained.

Further, since the laminated resin layer includes a red resin layer and a blue resin layer, and the red resin layer and the blue resin layer have the same size, sufficient light shielding properties can be obtained.

Further, the laminated resin layer of the present invention is provided outside a region facing a picture element electrode provided on the other substrate.

According to the present invention, since the laminated resin layer is provided outside the region of the other substrate facing the picture element electrode, a decrease in the aperture ratio of the liquid crystal display device can be prevented, and the display of the liquid crystal display device can be prevented. The quality can be improved.

Further, the present invention is characterized in that a counter electrode is formed so as to cover the laminated resin layer and the color filter layer of the one substrate.

In the prior art in which a counter electrode and an alignment film are formed on a color filter layer and a spacer is formed thereon, it is impossible to form the color filter layer and the spacer at the same time. On the other hand, in the present invention, after the laminated resin layer functioning as a spacer and the color filter layer are formed at the same time, the counter electrode is formed so as to cover them.

[0054]

FIG. 1 is a sectional view showing a schematic structure of a liquid crystal display device 30 according to an embodiment of the present invention. The liquid crystal display device 30 is, for example, an active matrix type liquid crystal display device, and has a pair of first and second substrates 17 and 18 facing each other. The first substrate 17 has a thin film transistor (TFT) element, a TFT circuit layer 1 including a gate wiring and a source wiring, an insulating layer 2, a matrix-shaped pixel electrode 3 and an alignment film 10 laminated in this order on a transparent substrate 4. It is composed. The second substrate 18 has a structure in which the color filter layer 5 and the laminated resin layer 19 are formed on the transparent substrate 7, and the counter electrode 6 and the alignment film 11 are laminated in this order.

The first color filter layer 5 is a resin layer.
, A second filter 5b and a third filter 5c. The first resin layer 19a of the laminated resin layer 19 is formed between adjacent filters.

The laminated resin layer 19 is formed by laminating a second resin layer 19b and a third resin layer 19c on a first resin layer 19a in this order. The layered portion of the second resin layer 19b and the third resin layer 19c protrudes from the surface of the color filter layer 5 and serves as a spacer 39 for maintaining a constant interval between the two substrates 17,18.

The first to third filters 5a, 5b, 5c and the first to third resin layers 19a, 19b, 19c are made of, for example, a photosensitive resin which is cured by ultraviolet rays. Each of the first to third resin layers 19a to 19c has a thickness of, for example, 1 to 3 μm per layer. When two resin layers are stacked as the spacer 39, the spacer 39 has a thickness of 2 to 6 μm. Also, each filter 5a to 5c and each resin layer 19a
To 19c are equal to each other. The number of resin layers constituting the spacer is not limited to two, but may be any number as long as it is one or more.

The counter electrode 6 of the second substrate 18 is formed so as to cover the laminated resin layer 19 and the color filter layer 5.
The first substrate 17 and the second substrate 18 are kept at a constant substrate gap (cell gap) by the spacer 39 and are bonded together with a sealant. A region where the pixel electrode 3 and the counter electrode 6 face each other is a pixel region directly related to display. In the liquid crystal display device 30, since the laminated resin layer 19 is not formed in a picture element region directly related to display, defects in the alignment films 10 and 11 are caused by, for example, foreign matter attached to the picture element electrode 3, the laminated resin layer 19, or the counter electrode 6. In this case, the portion of the counter electrode 6 formed on the laminated resin layer 19 and the pixel electrode 3 can be prevented from contacting and conducting. In addition, a decrease in the aperture ratio of the liquid crystal display device 30 due to the laminated resin layer 19 can be prevented. If the distance between the picture element electrode 3 and the laminated resin layer 19 parallel to the substrate when the first substrate 17 and the second substrate 18 are bonded to each other is about 10 μm apart, the displacement of the substrates 17 and 18 is caused. The continuity between the picture element electrode 3 and the counter electrode 6 can be prevented.

In the liquid crystal display device 30, for example, a twisted nematic liquid crystal 8 is filled between the alignment film 10 of the first substrate 17 and the alignment film 11 of the second substrate 18, and the liquid crystal injection port is filled with a sealing agent. Sealed.

FIG. 2 is a process chart showing a manufacturing procedure of the liquid crystal display device 30. The first substrate 17 is manufactured in steps a1 to a5, and the second substrate 18 is manufactured in steps b1 to b6. First, the manufacturing steps a1 to a5 of the first substrate 17 will be described.
In step a1, a transparent substrate 4 such as a glass substrate is prepared. In step a2, a TFT 4 is provided on one surface 4a of the transparent substrate 4.
A TFT circuit layer 1 including an element is formed. In step a3,
An insulating layer 2 covering the TFT circuit layer 1 and the transparent substrate 4 is formed. In step a4, the picture element electrode 3 is formed on the insulating layer 2. In step a5, an alignment film 10 that covers the pixel electrodes 3 and the insulating layer 2 is formed.

Next, the manufacturing steps b1 to b6 of the second substrate 18 will be described. In step b1, a transparent substrate 7 such as a glass substrate is prepared. In step b2, one surface 7 of the transparent substrate 7
The first filter 5a and the first resin layer 19a are formed on a. In step b3, a second filter 5b and a second resin layer 19b are formed, and in step b4, a third filter 5c and a third resin layer 19c are formed. Step b
The color filter layer 5 and the laminated resin layer 19 are formed by Steps 2 to b4. Each of the filters 5a to 5c constituting the color filter layer 5 and each of the resin layers 19a to 19c constituting the laminated resin layer 19 are formed by a process using a dry film laminating method described later. In step b5, a counter electrode 6 that covers the color filter layer 5 and the laminated resin layer 19 is further formed. In step b6, an alignment film 11 is formed on the counter electrode 6.

In step c1, the first substrate 17 and the second substrate 18 are pasted together with a sealant in a state where the alignment films 10 and 11 face each other to form an inlet for injecting the liquid crystal 8. Next, in step c2, the two substrates 17, 1
The liquid crystal 8 is injected and filled between 8. Then, in step c3, the inlet is sealed with a sealant. The liquid crystal display device 30 is manufactured as described above.

FIG. 3 is a cross-sectional view for explaining a dry film laminating method for forming the first resin layer 19a and the first filter 5a in the step b2. As shown in FIG. 3A, a dry film 16 is prepared. The dry film 16 is placed on the support film 20.
For example, a resin film 15 is formed by applying a colored photosensitive resin which is cured by ultraviolet rays, and then drying it. As the dry film 16, for example, a transer film manufactured by Fuji Photo Film Co., Ltd. can be used.

Next, as shown in FIG. 3B, a dry film 16 composed of a support film 20 and a resin film 15 is placed on the transparent substrate 7, and one surface 7 a of the transparent substrate 7 and one surface of the resin film 15. 15a so that they face each other. Thereafter, the support film 20 is peeled off as shown in FIG.

Next, as shown in FIG. 3D, a mask plate 43 having a mask portion 14a patterned on the transparent sheet 14 is positioned above the other surface 15b of the resin film 15 so as to be aligned. I do. The mask plate 43 is formed of the resin film 1
5 has a metal mask portion 14a patterned so as to irradiate ultraviolet rays to a portion to be the first filter 5a and the first resin layer 19a.
It is positioned and aligned above 5a. Next, the mask plate 43 is exposed to ultraviolet light from above. Developing the resin film 15 in which the portions of the resin film 15 that become the first filter 5a and the first resin layer 19a are hardened by the exposure,
As shown in (e), the first filter 5a and the first filter 5a
Is formed.

In the liquid crystal display device 30, the first resin layer 19
a, a second filter 5b and a second resin layer 19b are formed in the same manner as in the first filter 5a.
Of the filter 5c and the third resin layer 19c are formed.
As described above, the first resin layer 19a and the second resin layer 19
b and the laminated resin layer 19 composed of the third resin layer 19c
Can be simultaneously formed in the step of forming the color filter layer 5. In the dry film laminating method, since a resin film having a uniform film thickness is pressed and attached, a spacer having a uniform thickness can be formed as compared with the conventional spin coating method. If necessary, a protective oxygen barrier film or the like may be provided on the surface of the resin film.

The shape of each resin layer constituting the laminated resin layer is as follows:
When the resin film transferred by the dry film lamination method is patterned, it can be freely selected. Next, a description will be given of a laminated resin layer in which the size of each resin layer parallel to the substrate is different from each other by changing the size of the mask portion of the mask plate parallel to the substrate when each resin layer is formed.

FIG. 4 is a sectional view showing laminated resin layers 45 to 50 formed by laminating three color resin layers. FIG.
FIG. 3 is a sectional view showing laminated resin layers 51 to 53 formed by laminating three color resin layers. Since the laminated resin layer 19 shown in FIG. 1 is formed by a dry film lamination method, it is also possible to change the shape and form the laminated resin layer 19 like the laminated resin layers 45 to 53.

The laminated resin layer 45 shown in FIG. 4A is formed by laminating a first resin layer 45a, a second resin layer 45b, and a third resin layer 45c in this order. The size of each of the resin layers 45a to 45c parallel to the substrate is larger in the second resin layer 45b than in the first resin layer 45a,
5c is larger than the other two resin layers 45a and 45b.

The laminated resin layer 46 shown in FIG. 4B is formed by laminating a first resin layer 46a, a second resin layer 46b, and a third resin layer 46c in this order. The size of each of the resin layers 46a to 46c parallel to the substrate is larger in the third resin layer 46c than in the second resin layer 46b,
6a is larger than the other two resin layers 46b and 46c.

The laminated resin layer 47 shown in FIG. 4C is formed by laminating a first resin layer 47a, a second resin layer 47b, and a third resin layer 47c in this order. The size of each of the resin layers 47a to 47c parallel to the substrate is larger in the third resin layer 47c than in the first resin layer 47a, and is larger in the second resin layer 4c.
7b is larger than the other two resin layers 47a and 47c.

The laminated resin layer 48 shown in FIG. 4D is formed by laminating a first resin layer 48a, a second resin layer 48b, and a third resin layer 48c in this order. The size of each of the resin layers 48a to 48c parallel to the substrate is larger in the first resin layer 48a than in the third resin layer 48c,
8b is larger than the other two resin layers 48a and 48c.

The laminated resin layer 49 shown in FIG. 4E is formed by laminating a first resin layer 49a, a second resin layer 49b, and a third resin layer 49c in this order. The size of each of the resin layers 49a to 49c parallel to the substrate is larger in the first resin layer 49a than in the second resin layer 49b, and
9c is larger than the other two resin layers 49a and 49b.

The laminated resin layer 50 shown in FIG. 4F is formed by laminating a first resin layer 50a, a second resin layer 50b, and a third resin layer 50c in this order. The size of each of the resin layers 50a to 50c parallel to the substrate is larger in the second resin layer 50b than in the third resin layer 50c,
0a is larger than the other two resin layers 50c and 50b.

The laminated resin layer 51 shown in FIG. 5A is formed by laminating a first resin layer 51a, a second resin layer 51b, and a third resin layer 51c in this order. The size of each of the resin layers 51a to 51c parallel to the substrate is the same for the second resin layer 51b and the third resin layer 51c, and for the first resin layer 51a.
Is smaller than the second resin layer 51b and the third resin layer 51c.

The laminated resin layer 52 shown in FIG. 5B is formed by laminating a first resin layer 52a, a second resin layer 52b, and a third resin layer 52c in this order. The size of each of the resin layers 52a to 52c parallel to the substrate is the same for the first resin layer 52a and the second resin layer 52b and for the third resin layer 52c.
Is smaller than the first resin layer 52a and the second resin layer 52b.

The laminated resin layer 53 shown in FIG. 5C is formed by laminating a first resin layer 53a, a second resin layer 53b, and a third resin layer 53c in this order. The size of each of the resin layers 53a to 53c parallel to the substrate is the same for the first resin layer 53a and the third resin layer 53c and for the second resin layer 53b.
Is smaller than the first resin layer 53a and the third resin layer 53c.

As described above, the laminated resin layers 45 to 53 are formed of the respective resin layers 45a to 45c, 46a to 46c, 47a to 47.
c, 48a to 48c, 49a to 49c, 50a to 50
c, 51a to 51c, 52a to 52c, 53a to 53c
By making the size parallel to the substrate different, a substantially cone is formed. When the laminated resin layers 45 to 53 are formed in a substantially conical shape, the inclination of the spacer portion protruding from the color filter layer becomes gentle. As a result, the alignment film becomes gentle, and the rubbing treatment of the alignment film is easily performed. When the laminated resin layers 45 to 53 are formed in a substantially conical shape,
The diameter of the cross section parallel to the substrate with the smallest resin layer is about 10μ.
The optimal value is m. This is because the smaller the area of the upper surface of the laminated resin layer is, the smaller the misalignment region of the alignment film can be made. On the other hand, when the diameter of the resin layer is 10 μm or less, it becomes difficult to control during exposure. .

Even when the number of the resin layers constituting the laminated resin layer is other than three, similarly to the laminated resin layers 45 to 53, the size of each resin layer parallel to the substrate is made different to obtain the laminated resin layer. Is formed so as to be substantially conical, and the spacer portion protruding from the color filter layer is made gentle, so that the rubbing treatment of the alignment film becomes easy.

Next, the color of each resin layer will be described. The laminated resin layer and the color filter layer are, for example, R
(Red), B (blue), G (green) colored resin layer, or C (cyan), M (magenta), Y (yellow)
It is composed of a colored resin layer.

Table 1 shows the evaluation results of the OD values and the light-shielding properties of the sample resin layers of each color. The light-shielding evaluation results shown in Table 1 show whether, when the sample resin layer is arranged outside the pixel area, light leakage therefrom can be reduced and the display quality of the liquid crystal display device can be improved. ○ indicates that light leakage can be reduced and display quality can be improved.
△ is low light shielding property, not enough to prevent light leakage,
X indicates that the light-shielding property is even lower. That is, △
And x indicate that the display quality cannot be improved. OD is an abbreviation of Optical Density,
The D value is a value indicating the opacity of a substance, and a substance having a larger OD value has a lower transmittance.

As the sample resin layers in Table 1, R resin layers,
A G resin layer and a B resin layer were prepared. The thicknesses of these three layers are equal and are not less than 1 μm and not more than 3 μm. In addition, a sample resin layer, an RG resin layer, an RB resin layer, a GB resin layer, and an RGB resin layer are formed by stacking three layers having the same thickness in a different combination, and are formed in black for comparison of OD values. A sample resin layer and a BK resin layer made of resin were prepared. The BK resin layer is made of a photosensitive resin in which carbon is dispersed. For each of these sample resin layers, the light-shielding property was evaluated, and the OD value was determined.

[0083]

[Table 1]

From Table 1, among the sample resin layers obtained by laminating two resin layers, the RB resin layer is composed of the RG resin layer and the G resin layer.
It can be seen that the light shielding property is higher than that of the B resin layer, light leakage outside the picture element area can be reduced, and the display quality can be improved.
The OD value of the RB resin layer is 1.5. Monochromatic resin layer, R
The G resin layer and the GB resin layer have low light-shielding properties and cannot sufficiently reduce light leakage. The RGB resin layer and the BK resin layer
Like the RB resin layer, it has high light-shielding properties, reduces light leakage outside the picture element region, and can improve display quality.

Further, the RB resin layer, the RGB resin layer and the B
Since the K resin layer has a high light-shielding property, if these laminated resin layers are formed in a region that blocks incident light to an active element such as a thin film transistor element, malfunction and unstable operation of the active element due to light are prevented. can do. Further, by forming the gate wiring, the source wiring, and the like in a region that blocks incident light to a wiring made of metal such as a gate wiring and a source wiring, reflection of light by the wiring can be prevented, and display quality of the liquid crystal display device can be improved.

Next, the resin layers 51a to 51c, 52a to 52c, 53a to 5c of the laminated resin layers 51 to 53 shown in FIG.
The laminated resin layer having a limited color of 3c will be described. The laminated resin layers 51 to 53 are characterized in that the size of the two resin layers parallel to the substrate is equal and the remaining one resin layer is smaller than the two resin layers.

In such laminated resin layers 51 to 53, the resin layers 51a, 52c and 53b, which are smaller in size in parallel to the substrate than the other resin layers, are G resin layers, and the resin layers 51a, 52c and 53b are equal in size in parallel to the substrate. One of the two resin layers is R
A resin layer is used, and the other resin layer is used as a B resin layer. The common feature of the laminated resin layers 51 to 53 in which the colors of the resin layers are limited as described above is that the size of the G resin layer parallel to the substrate is smaller than that of the R resin layer and the B resin layer. That is, the resin layers are equal.

As can be seen from Table 1, the R resin layer and the B resin
Since the resin layer in which the resin layers are overlapped has a high light-shielding property, the color of each resin layer is limited so that the size of the G resin layer parallel to the substrate is smaller than that of the R resin layer and the B resin layer. The laminated resin layers 51 to 53 have excellent light-shielding properties. That is, R
In the laminated resin layer including the resin layer and the B resin layer, light leakage can be reduced by making the sizes of the R resin layer and the B resin layer uniform.

Next, the procedure for forming the laminated resin layer and the color filter layer including the R resin layer, the G resin layer and the B resin layer will be described. FIG. 6 is a flowchart showing a procedure for forming a laminated resin layer including the R resin layer, the G resin layer, and the B resin layer, and a color filter layer. The R, G, and B resin layers need to be baked in the order of the B resin layer, the G resin layer, and the R resin layer, that is, a long heat treatment time is required. In the forming procedure shown in FIG. 6, an R resin layer, a G resin layer, and a B resin layer are formed in this order.
Heat is applied also in the heat treatment of the resin layer and the B resin layer, and heat is applied to the G resin layer also in the heat treatment of the B resin layer. Therefore, the state after the formation of the color filter layer and the laminated resin layer becomes uniform in the resin layers of each color, and the heat treatment can be performed effectively.

In FIG. 6, in addition to the procedure for forming the color filter layer and the laminated resin layer, a black matrix (BM)
Is shown. 7 and 8 show R,
FIG. 4 is a cross-sectional view for describing a method for forming a G and B resin layers and a black matrix.

In FIG. 7A, the transparent substrate 7 as a supporting substrate is washed, and in FIG. 7B, a dry film having a red resin film is laminated on the transparent substrate 7 and the cover film is peeled off. By doing so, the red resin film 71R is transferred.

In FIG. 7C, the red resin film 71R is
Exposure is performed using the mask plate 43, and further development, post-exposure, and post-bake are performed to form a red resin layer 72R as illustrated in FIG. 7D.

In FIG. 7E, the substrate on which the red resin layer 72R is formed is washed, a dry film having a green resin film is laminated thereon, and the green resin film is removed by peeling off the cover film. Transfer 71G.

In FIG. 7F, the green resin film 71G is
Exposure is performed using the mask plate 43, and further development, post-exposure, and post-bake are performed to form a green resin layer 72G as illustrated in FIG. At this time, the green resin layer 72G is formed so as to be partially laminated on the red resin layer 72R.

In FIG. 7 (h), the substrate on which the green resin layer 72G is formed is washed, a dry film having a blue resin film is laminated thereon, and the blue resin film is removed by peeling off the cover film. Transfer 71B.

In FIG. 8A, the blue resin film 71B is
Exposure is performed using the mask plate 43, and further development, post-exposure, and post-bake are performed to form a blue resin layer 72B as shown in FIG. 8B. At this time, the blue resin layer 72B is formed by the red resin layer 72R and the green resin layer 72.
It is formed so as to be partially laminated on G. In this way, the laminated resin layer in which the red resin layer 72R, the green resin layer 72G, and the blue resin layer 72B are laminated, and the red resin layer 72R, the green resin layer 72G, and the blue resin layer 72B are flat. And a color filter layer arranged in a uniform manner can be simultaneously formed.

As shown in FIGS. 7 and 8, when forming each resin layer, a defective portion 73 may be generated due to chipping of the resin layer. Further, a gap 74 may be formed between the resin layers adjacent to the color filter layer, or a gap 75 may be formed between the laminated resin layer and the color filter layer. The defective portion 73 or the gaps 74 and 75 generate a bright spot on the display of the liquid crystal display device, and cause a deterioration in display quality.

In FIG. 8, after forming a color filter layer in order to shield such a defective portion or gap from light,
A black matrix is formed. The black matrix is made of a black resin layer having a high light-shielding property, such as the BK sample resin layer shown in Table 1.

In FIG. 8C, the substrate on which the red resin layer 72R, the green resin layer 72G, and the blue resin layer 72B are formed is washed, and a dry film having a black resin film is laminated thereon. Then, the black resin film 76 is transferred by peeling off the cover film.

In FIG. 8D, the black resin film 76 is exposed from above the mask plate 43 using the mask plate 43, and the surface of the transparent substrate 7 on which the black resin film 76 is formed is exposed. Is exposed from the opposite back surface, and is further subjected to development, post exposure, and post baking to form a black matrix 77 as shown in FIG. 8B. By exposing from the back surface, the black matrix 77 is arranged in the small defective portion 73 or the gaps 74 and 75 of the resin layer, and it is possible to prevent a bright point of display.

FIG. 9 is a sectional view showing a method of exposing the blue resin film 71B when the black matrix is not formed. When no black matrix is formed, FIG.
9H, after forming the blue resin film 71B in FIG.
5A, the light is exposed from above the mask plate 43 using the mask plate 43, and the blue resin film 71B of the transparent substrate 7 is exposed.
9 is exposed from the back surface opposite to the surface on which is formed, and further subjected to development, post-exposure, and post-baking, and FIG.
A blue resin layer 72B is formed as shown in FIG.

The portion of the blue resin layer 72B formed by back exposure is formed to be thinner than the portion exposed from above the mask plate 43, and its transmittance is close to the transmittance of the green resin layer 72G. The chromaticity shifts from blue to white. In the configuration in which the resin layer is not formed in the defective portion 73 and the gaps 74 and 75,
Although the light of the backlight of the liquid crystal display device is completely transmitted from 75 and a bright point is generated in the display, the bright point of the display can be reduced in the configuration in which the resin layer is formed.

In particular, the blue resin layer 72B has a higher light-shielding property than the red resin layer 72R and the green resin layer 72G. Has the effect of blocking. Therefore, as described above, the blue resin layer 72B is formed last in the resin layers constituting the laminated resin layer and is exposed from the back surface,
Other resin layers 72R and 72G can be arranged also in small defective portions 73 or gaps 74, and the bright spots of display can be reduced. Further, the gap 75 between the color filter layer and the laminated resin layer can be filled by forming the blue resin layer 72B constituting the laminated resin layer so as to extend to the lower outer edge of the laminated resin layer. Bright spots can be reduced.

In the laminated resin layers 45 to 50 shown in FIG. 4, when the resin layer having the largest size parallel to the substrate among the first to third resin layers is the B resin layer, the first resin layer The B resin layer is arranged alongside the resin layer, and the B resin layer can be arranged at the lower outer edge of the laminated resin layer, so that the bright spots of the display can be reduced.

In particular, the laminated resin layer 49 shown in FIG.
In this case, when the R resin layer, the G resin layer, and the B resin layer are formed in this order, the heat treatment can be performed efficiently, and the B resin layer having the largest size parallel to the substrate covers the R and G resin layers. The laminated resin layer can be formed so as to spread to the lower outer edge, and light leakage from the peripheral portion of the laminated resin layer can be prevented. Further, when formed in this way, the second largest R resin layer and the B resin layer overlap, a laminated resin layer having excellent light shielding properties can be formed, and the rubbing treatment of the alignment film can be easily performed.

In the forming procedure shown in FIG. 6, when the black matrix is not formed, it is necessary to perform the above-described back surface exposure when forming the blue resin layer 72B. When performing backside exposure, an ultraviolet absorber is mixed into the red resin film 71R and the green resin film 71G, and the blue resin formed on the red resin layer 72R and the green resin layer 72G by the backside exposure. It is necessary to prevent the film 71B from being cured.

When a black matrix is formed, no backside exposure is performed when forming the blue resin layer 72B. In the forming procedure shown in FIG. 6, the step of cleaning the substrate when forming the green resin layer 72G, the blue resin layer 72B, and the black matrix may be omitted.

Color filter layer 5 and laminated resin layer 19
Can be formed at positions other than the formation position of the liquid crystal display device 30 shown in FIG. FIG. 10 is a sectional view of a liquid crystal display device 40 according to another embodiment of the present invention. In the liquid crystal display device 30 shown in FIG. 1, the color filter layer 5 and the laminated resin layer 19 are formed on the transparent substrate 7 side on which the counter electrode 6 is formed, but in the liquid crystal display device 40 shown in FIG.
Transparent substrate 4 on which FT circuit layer 1 and picture element electrode 3 are formed
Formed on the side.

The liquid crystal display device 40 has a pair of first and second substrates 12 and 13 facing each other.
A TFT circuit layer 1 and an insulating layer 2 are laminated in this order on a transparent substrate 4, and a color filter layer 5
And a laminated resin layer 19, a matrix-shaped pixel electrode 3 is formed on the color filter layer 5, and an alignment film 10 covering the color filter layer 5, the pixel electrode 3 and the laminated resin layer 19 is laminated. It is composed.

The laminated resin layer 19 includes a first resin layer 19a, a second resin layer 19b, and a third resin layer 19b.
Are laminated in this order, and a portion where the second resin layer 19b and the third resin layer 19c are laminated protrudes from the color filter layer 5 and functions as a spacer 39. The second substrate 13 is provided on the transparent substrate 7 on the counter electrode 6.
And the alignment film 11 are laminated in this order.

The first and second substrates 12 and 13 are kept at a constant substrate gap (cell gap) by the spacer 39, and are bonded to each other with a sealant in an opposed state. In the liquid crystal display device 40, the liquid crystal 8 is filled between the alignment film 10 of the first substrate 12 and the alignment film 11 of the second substrate 13, and the liquid crystal injection port is sealed with a sealant. Liquid crystal display device 40
In this case, since the laminated resin layer 19 is not formed in the pixel region where the pixel electrode 3 and the counter electrode 6 are opposed to each other, for example, the alignment film is formed by a foreign substance adhering to the pixel electrode 3, the laminated resin layer 19 or the counter electrode 6. Even if there is a defect on 10, 11,
It is possible to prevent the opposing electrode 6 and the pixel electrode 3 from contacting and conducting.

The liquid crystal display device having a TFT element has been described above. However, the present invention is not limited to this, and the MIM (Me
The present invention can also be applied to a liquid crystal display device having a two-terminal type active element such as a tal insulator metal element. Further, the present invention can be applied to not only a transmission type liquid crystal display device but also a reflection type liquid crystal display device.

[0113]

As described above, according to the present invention, a film in which a resin film is provided on a sheet-like support is pressure-bonded to the surface of one of the substrates on the liquid crystal layer side, and then the sheet-like support is peeled off. A resin film is formed on one substrate by a dry film lamination method in which the resin film is transferred onto one substrate, and the resin film is patterned into a predetermined shape to form a resin layer, thereby forming a color filter layer. The resin layer and the resin layer constituting the laminated resin layer are simultaneously formed. By repeating this step, a laminated resin layer formed by laminating two or more resin layers and a color filter layer formed by arranging a plurality of resin layers in a plane can be formed simultaneously.

The portion of the laminated resin layer protruding from the surface of the color filter layer functions as a spacer, and regulates the distance between the pair of substrates. Therefore, in the present invention, the color filter layer and the spacer can be formed at the same time, and the productivity of the liquid crystal display device is improved.

Further, in such a dry film laminating method, a dry film having a resin film having a uniform film thickness is adhered to a substrate by pressing or the like, so that the resin layer becomes more uniform in thickness than the conventional spin coating method. The uniformity of the thickness of the laminated resin layer formed by overlapping a plurality of resin layers is increased. Therefore, the uniformity of the distance between the substrates is improved, and a decrease in display contrast can be prevented, so that a liquid crystal display device with high display quality can be obtained.

Each of the resin layers constituting the laminated resin layer can be easily formed at a predetermined position when the resin film transferred by the dry film laminating method is patterned by exposure and development. It is possible to arrange the laminated resin layers uniformly, and it is possible to maintain a uniform substrate interval as compared with a configuration in which spacers such as beads or fibers are scattered.

Further, since the laminated resin layer is formed in a substantially pyramid shape and the spacer portion has a gentle shape, the rubbing treatment of the alignment film is easier to be performed than in the case of a rectangular parallelepiped spacer, and unevenness in the rubbing treatment is reduced. can do.

The laminated resin layer includes a blue resin layer, and the blue resin layer is formed so as to extend to the outer edge of the laminated resin layer. If there is a gap between the two, the gap can be filled with a blue resin having high light-shielding properties. By doing so, the blue resin layer blocks the light passing through the gap, and prevents a bright point of display, thereby improving the display quality of the liquid crystal display device.

The laminated resin layer includes a blue resin layer, and the blue resin layer is formed after forming another resin layer constituting the laminated resin layer. When forming the, by exposing from the back,
A gap between filters or a defective portion of the filter can be filled with a blue resin having a high light-shielding property, and a bright spot on a display can be prevented.

Further, the color filter layer and the laminated resin layer include a red resin layer, a green resin layer and a blue resin layer, and include a red resin layer, a green resin layer, and a blue resin layer. Since they are formed in order, heat treatment can be performed effectively.

The laminated resin layer is formed to include a red resin layer and a blue resin layer. Since the red resin layer and the blue resin layer have the same size, sufficient light-shielding properties can be obtained.
Light leakage outside the pixel area can be reduced.

Further, if this laminated resin layer is formed in a region that blocks incident light to an active element such as a thin film transistor element, malfunction or unstable operation of the active element due to light can be prevented. In addition, when the wiring is formed in a region that blocks light incident on wirings such as a gate wiring and a source wiring, reflection of light by the wirings can be prevented, and display quality of the liquid crystal display device can be improved.

Further, each resin layer constituting the laminated resin layer is
When patterning the resin film transferred by the dry film lamination method, it can be easily formed at a predetermined position, so the laminated resin layer is formed avoiding the area facing the pixel electrode and directly Do not arrange the laminated resin layer in the relevant picture element area. By doing so, a decrease in the aperture ratio of the liquid crystal display device can be prevented, and the display quality of the liquid crystal display device can be improved.

[Brief description of the drawings]

FIG. 1 is a liquid crystal display device 30 according to an embodiment of the present invention.
It is sectional drawing which shows the schematic structure of.

FIG. 2 is a process chart showing a manufacturing procedure of the liquid crystal display device 30 shown in FIG.

FIG. 3 shows a first resin layer 19a and a first filter 5a.
FIG. 3 is a cross-sectional view for explaining a dry film laminating method for forming a film.

FIG. 4 is a sectional view showing laminated resin layers 45 to 50 formed by laminating three color resin layers.

FIG. 5 is a cross-sectional view showing laminated resin layers 51 to 53 formed by laminating three color resin layers.

FIG. 6 is a flowchart showing a procedure for forming a laminated resin layer and a color filter layer each including an R resin layer, a G resin layer, and a B resin layer.

FIG. 7 is a cross-sectional view for explaining a method of forming R, G, and B resin layers.

FIG. 8 is a cross-sectional view for explaining a method of forming an R, G, B resin layer and a black matrix.

FIG. 9 is a cross-sectional view illustrating a method of exposing a blue resin film 71B when a black matrix is not formed.

FIG. 10 shows a liquid crystal display device 4 according to another embodiment of the present invention.
0 is a sectional view.

FIG. 11 is a sectional view schematically showing a conventional liquid crystal display device 41.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 TFT circuit layer 2 insulating layer 3 picture element electrode 4, 7 transparent substrate 5 color filter layer 5 a first filter 5 b second filter 5 c third filter 6 counter electrode 8 liquid crystal 10, 11 alignment film 12, 17 first Substrates 13, 18 Second substrate 14 Transparent sheet 15 Resin film 16 Dry film 19, 45-53 Laminated resin layer 19a First resin layer 19b Second resin layer 19c Third resin layer 20 Support film 30, 40 Liquid crystal Display device 39 Spacer 43 Mask plate 72R Red resin layer 72G Green resin layer 72B Blue resin layer 77 Black matrix

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Tsuchiya 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside (72) Inventor Yasuyuki Matsui 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside the corporation

Claims (17)

[Claims] 1. A liquid crystal layer is interposed between a pair of substrates disposed to face each other at a predetermined interval, and a color filter layer is provided on a liquid crystal layer side surface of one of the pair of substrates. In the method for manufacturing a liquid crystal display device, a film in which a resin film is provided on a sheet-like support is pressure-bonded to the liquid crystal layer side surface of one of the substrates, and then the sheet-like support is peeled off and the resin film is removed from the one substrate. The resin layer is transferred to a predetermined shape and patterned into a predetermined shape to form a resin layer. This is repeated to form a color filter layer composed of a plurality of resin layers arranged in a plane, and at the same time, to laminate two or more resin layers. A method for manufacturing a liquid crystal display device, comprising forming a laminated resin layer comprising: 2. The method according to claim 1, wherein the laminated resin layer is formed in a substantially conical shape. 3. The laminated resin layer includes a blue resin layer, and the blue resin layer is formed so as to extend to a lower outer edge of the laminated resin layer.
Or a method for manufacturing a liquid crystal display device according to item 2. 4. The laminated resin layer is configured to include a blue resin layer, and the blue resin layer is formed last among resin layers constituting the laminated resin layer. 1
4. The method for manufacturing a liquid crystal display device according to any one of items 1 to 3. 5. The color filter layer and the laminated resin layer each include a red resin layer, a green resin layer, and a blue resin layer, and include a red resin layer, a green resin layer, and a blue resin layer. 5. The method according to claim 4, wherein the layers are formed in order.
The manufacturing method of the liquid crystal display device according to the above. 6. The laminated resin layer forms a first resin layer, forms a second resin layer larger than the first resin layer on the first resin layer, and forms a second resin layer on the first resin layer. And a third resin layer having the same size as the second resin layer. The first, second and third resin layers are formed in this order in green, blue and red, or green, red and 3. The method according to claim 2, wherein the liquid crystal display device has a blue color. 7. The laminated resin layer forms a first resin layer, forms a second resin layer smaller than the first resin layer on the first resin layer, and forms a second resin layer on the second resin layer. And a third resin layer having the same size as the first resin layer. The first, second and third resin layers are arranged in this order in blue, green and red, or red, green and 3. The method according to claim 2, wherein the liquid crystal display device has a blue color. 8. The laminated resin layer forms a first resin layer, and a second resin layer having the same size as the first resin layer is formed on the first resin layer.
And a third resin layer smaller than the second resin layer is formed on the second resin layer. The first, second and third resin layers are formed in this order: 3. The method for manufacturing a liquid crystal display device according to claim 2, wherein the liquid crystal display device has colors of blue, red and green, or red, blue and green. 9. The method for manufacturing a liquid crystal display device according to claim 1, wherein the laminated resin layer is formed so as to avoid a region facing the pixel electrode on the other substrate. 10. The method according to claim 1, wherein a counter electrode is formed so as to cover the laminated resin layer and the color filter layer of the one substrate. 11. A pair of substrates, a color filter layer comprising a plurality of resin layers provided in a plane on one surface of one of the pair of substrates, and a color filter layer laminated on one surface of the one substrate Having a laminated resin layer composed of a plurality of resin layers provided on the substrate, an alignment film provided on the outermost surface of one substrate and an outermost surface of the other substrate, and a liquid crystal layer interposed between the alignment films of the pair of substrates. In the display device, the laminated resin layer is a substantially pyramid. 12. The laminated resin layer is configured to include a blue resin layer, and the blue resin layer is formed so as to spread to a lower outer edge of the laminated resin layer. The liquid crystal display device according to the above. 13. The laminated resin layer, comprising: a first resin layer;
A second resin layer formed on the first resin layer and larger than the first resin layer; and a second resin layer formed on the second resin layer.
And a third resin layer having the same size as the first, second, and third resin layers, and the first, second, and third resin layers have green, blue, and red, or green, red, and blue colors in this order. The liquid crystal display device according to claim 11, wherein: 14. The laminated resin layer comprises: a first resin layer;
A second resin layer formed on the first resin layer and smaller than the first resin layer; and a first resin layer formed on the second resin layer.
And a third resin layer having the same size as the first resin layer, and the first, second, and third resin layers have blue, green, and red, or red, green, and blue in this order. The liquid crystal display device according to claim 11, wherein: 15. The laminated resin layer comprises: a first resin layer;
A second resin layer formed on the first resin layer and having the same size as the first resin layer; and a third resin layer formed on the second resin layer and smaller than the second resin layer. 12. The liquid crystal according to claim 11, wherein the first, second, and third resin layers have a color of blue, red, and green, or red, blue, and green in this order. Display device. 16. The liquid crystal display device according to claim 11, wherein the laminated resin layer is provided outside a region facing a picture element electrode provided on the other substrate. 17. The liquid crystal display device according to claim 11, wherein a counter electrode is formed so as to cover the laminated resin layer and the color filter layer of the one substrate.