JP2012133293A - Color filter and liquid crystal display apparatus using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color filter capable of preventing occurrences of display unevenness and bright point defect resulting from vibration, impact or the like during transportation of a liquid crystal display apparatus, for example.SOLUTION: A color filter 1 comprises: a transparent substrate 2; a light shield part 3 formed on one face of the transparent substrate 2, in a predetermined pattern with an opening made in it; color parts 4 of a plurality of colors provided on the opening; a columnar lamination part 5 in which color layers, which are formed of corresponding materials composing the color parts 4 of two or more colors among the plurality of colors, are formed one on the other in a columnar shape on the light shield part 3; a transparent protective layer 6 formed of a transparent resin covering the color parts 4 and the columnar lamination parts 5; and an orientation film 7 for covering the transparent protective layer 6. Load is applied to the top of a cylindrical projection 8, which is composed of the columnar lamination part 5, the transparent protective layer 6 covering the periphery thereof, and the orientation film 7, in a direction perpendicular to the transparent substrate 2 up to 200 mN for 9 seconds. When this state is held for five seconds, the displacement magnitude at a position of the top in the direction perpendicular to the transparent substrate 2 before and after the load is applied is 0.45 μm or more.

Description

  The present invention relates to a color filter and a liquid crystal display device using the color filter.

  A liquid crystal display device such as a color liquid crystal display generally has a structure in which a counter substrate on which drive elements are formed and a color filter are arranged to face each other and the periphery is sealed, and a liquid crystal material is filled in the gap. A color filter constituting such a liquid crystal display device generally includes a plurality of colored portions such as red, green, and blue on a transparent substrate, and a light shielding portion is formed so as to surround each colored portion. It becomes.

  Such a liquid crystal display device is generally provided with a spacer for maintaining a cell gap between the counter substrate and the color filter in order to maintain a liquid crystal layer made of a liquid crystal material at a predetermined thickness. Conventionally, bead spacers such as plastic beads and glass beads have been used as such spacers, but such bead spacers are very difficult to dispose in a predetermined position between the counter substrate and the color filter. In addition, if the spacer is disposed in the image display area of the liquid crystal display device, the image quality of the liquid crystal display device may be deteriorated.

  Therefore, conventionally, a plurality of colored portions are formed on a substrate by photolithography, and at the same time, a laminate of colored layers made of the same material as the colored portion is formed on the light shielding portion, and the laminate is used as a spacer. A liquid crystal display device including a color filter has been proposed (Patent Document 1, etc.).

JP 7-318950 A

  In the case of using a laminated body formed by laminating colored layers of red, green, and blue on a light shielding portion (black mask) as a spacer as in the liquid crystal display device described in Patent Document 1, impurity ions from the colored layer are used. For the purpose of preventing contamination of the liquid crystal due to elution of components and degassing, such a laminate may be coated with a protective layer made of a transparent resin or the like. In this case, a phenomenon occurs in which the transparent resin or the like on the laminate flows into the region where the colored portion is present until the transparent resin or the like is cured, and the cell gap for forming the liquid crystal layer having a predetermined thickness is maintained. Therefore, it is necessary to set the protruding height of the laminated body in consideration of the inflow phenomenon of the transparent resin or the like. And in order to form a laminate having a desired protruding height, the upper bottom portion of the colored layer located at the lowest layer of the laminate is taken into consideration in consideration of the inflow phenomenon until the colored layer constituting the laminate is cured. Therefore, it is necessary to increase the amount of the material constituting each colored layer. However, when the size of the upper bottom portion of the colored layer to be laminated is increased, the resulting laminated body becomes thicker and the hardness increases. As a result, vibrations and impacts during transportation of a liquid crystal display device using such a color filter are caused. There is a problem that display unevenness is caused.

  On the other hand, when the laminate is covered with a protective layer made of a transparent resin or the like, the protective layer around the laminate may be chipped off due to vibration or impact during transportation of the liquid crystal display device. Since the protective layer and the colored layer constituting the laminate coated with the protective layer have good adhesion to each other, when the protective layer peels off, a part of the colored layer may fall off together with the protective layer. is there. Further, even if only the protective layer is peeled off, a part of the colored layer may fall off through the pinhole formed by peeling off the protective layer. When the debris including the colored layer that has fallen off in this manner falls on the colored portion such as red, green, and blue, there is a problem that a bright spot defect occurs. When the hardness of the protective film is increased for the purpose of preventing the problem of the bright spot failure to prevent the protective layer from peeling off, the spacer made of the laminate coated with the protective layer has a high hardness as a whole. Therefore, there is a problem that display unevenness due to vibration or impact occurs.

  In other words, if the size of the upper bottom portion of the colored layer located in the lowermost layer is reduced in order to reduce the hardness of the laminated body, the height of the laminated body is lowered, and a desired function as a spacer (function to maintain a predetermined cell gap) ) Is difficult to achieve, and when the height of the laminated body is increased, the hardness of the laminated body increases, and display unevenness due to vibration or the like occurs. On the other hand, increasing the hardness of the protective layer to prevent chipping or peeling off of the protective film covering the laminate increases the hardness of the entire spacer including the laminate, which also causes display unevenness due to vibrations, etc. End up. Thus, a color filter that can solve both the problem of display unevenness caused by vibration and the like and the problem of defective bright spots caused by peeling off of the protective layer has not yet been proposed.

  The present invention has been made in view of the above-described circumstances, and can prevent display unevenness due to vibration, impact, etc. during transportation of a liquid crystal display device and the protective layer is peeled off. An object of the present invention is to provide a color filter capable of preventing the occurrence of a bright spot defect caused by the above and a liquid crystal display device using the same.

  In order to achieve the above object, the present invention provides a transparent substrate, a light-shielding portion formed in a predetermined pattern having an opening on one surface of the transparent substrate, and a plurality of light shielding portions provided in the opening. A colored layer, a columnar laminated portion in which colored layers made of materials constituting the colored portion of two or more of the plurality of colors are stacked in a columnar shape on the light shielding portion, and at least the colored portion and A transparent protective layer made of a transparent resin that covers the columnar laminated portion, and an alignment film that is provided so as to cover the transparent protective layer, the columnar laminated portion, and the periphery of the columnar laminated portion A columnar convex portion is constituted by the transparent protective layer and the alignment film to be coated, and a load is applied to the top of the columnar convex portion in a direction perpendicular to the transparent substrate up to 200 mN in 9 seconds, and the state is maintained for 5 seconds. Before and after loading Definitive position of said top portion, the displacement amount in the vertical direction with respect to the transparent substrate to provide a color filter which is characterized in that at 0.45μm or more (Invention 1).

  In the present invention, “transparent” means that the transmittance of light having a wavelength of 400 nm is 90% or more, preferably 93% or more, particularly preferably 96% or more.

  In the said invention (invention 1), it is preferable that the size of the upper bottom part of the said columnar convex part is 30 micrometers or less (invention 2), and the size of the upper bottom part of the said columnar convex part is 5-25 micrometers. More preferred (Invention 3).

  In the present invention, the “size of the upper bottom portion of the columnar convex portion” refers to the central portion of the colored portion having the same color as the colored layer located in the lowermost layer of the columnar laminated portion from the top (top) of the columnar convex portion. When the length in the vertical direction from the top (top) to the transparent substrate to the alignment film surface is 100%, the vertical direction from the top (top) of the columnar convex portion to the transparent substrate (axial direction of the columnar laminated portion) ) Means a size of the columnar convex portion in a plane substantially parallel to the transparent substrate including a point having a length of 5%. When the columnar convex portion has a substantially cylindrical shape, the maximum of the columnar convex portion in the plane is When the columnar convex portion has a substantially rectangular shape, the diameter means the diagonal length of the columnar convex portion in the plane. The size of the upper bottom portion of the columnar convex portion can be measured using a predetermined measuring device (for example, Super PSIS-6008 (product name), manufactured by SNU Precision).

  In the said invention (invention 1-3), the size of the upper bottom part of the colored layer located in the uppermost layer of the said columnar laminated part is 5-40 micrometers, and the upper side of the colored layer located in the uppermost layer of the said columnar laminated part The ratio between the size of the bottom and the size of the upper bottom of the colored layer located in the lowermost layer of the columnar laminate is preferably 1: 1.5 to 20 (Invention 4).

  In the present invention, the “size of the upper bottom portion of the colored layer” refers to the surface from the top (top) of the colored layer to the center of the colored portion of the same color as the colored layer located at the bottom of the columnar laminated portion. When the length in the vertical direction from the top (top) to the transparent substrate is 100%, the vertical direction from the top (top) of the colored layer to the transparent substrate (the axial direction of the columnar laminated portion) Means the size of the colored layer in a plane substantially parallel to the transparent substrate, including a point of 5% in length, and when the colored layer is substantially cylindrical, the maximum diameter of the colored layer in the plane is When the colored layer has a substantially rectangular shape, it means the diagonal length of the colored layer in the plane. The size of the upper bottom portion of the colored layer can be measured using a predetermined measuring device (for example, Super PSIS-6008 (product name), manufactured by SNU Precision).

  In the said invention (invention 1-4), it is preferable that the thickness of the said transparent protective layer in the upper part of the said columnar laminated part is 0.35 micrometer or more (invention 5).

  The present invention also provides a transparent substrate, a light-shielding portion provided on one surface of the transparent substrate and formed in a predetermined pattern having an opening, and a plurality of colors provided in the opening. And a columnar protrusion made of a material constituting the colored portion of one of the plurality of colors, or each material constituting a colored portion of two or more of the plurality of colors provided on the light shielding portion A colored laminated layer formed by laminating a colored layer, a transparent protective layer made of a transparent resin covering at least the colored part, and the columnar protrusion or the columnar laminated part, and the transparent protective layer And the light shielding portion is formed by laminating two or more colors of the plurality of colored portions, and the columnar protrusion or the columnar laminated portion is laminated as the light shielding portion. Depending on the color of the colored part The columnar protrusions are formed by the columnar protrusions and the transparent protective layer and the alignment film covering the periphery of the columnar protrusions, or the columnar stacked portions and the transparent protective layer and the alignment film covering the periphery of the columnar stacked portions. Is formed, when a load is applied to the top of the columnar convex portion in a direction perpendicular to the transparent substrate up to 200 mN in 9 seconds, and when the state is held for 5 seconds, the position of the top before and after the load is Provided is a color filter characterized in that a displacement in a direction perpendicular to a transparent substrate is 0.45 μm or more (Invention 6).

  In the said invention (invention 6), it is preferable that the size of the upper bottom part of the said columnar convex part is 30 micrometers or less (invention 7), and the size of the upper bottom part of the said columnar convex part is 5-25 micrometers. More preferred (Invention 8). In the said invention (invention 6-8), the size of the upper bottom part of the colored layer located in the uppermost layer of the said columnar laminated part is 5-40 micrometers, and the upper side of the colored layer located in the uppermost layer of the said columnar laminated part The ratio between the size of the bottom and the size of the upper bottom of the colored layer located in the lowermost layer of the columnar laminate is preferably 1: 1.5 to 20 (invention 9). In the said invention (invention 6-9), it is preferable that the thickness of the said transparent protective layer located on the said columnar protrusion or the said columnar laminated part is 0.35 micrometer or more (invention 10).

  Furthermore, the present invention is sealed in a gap formed by the color filter according to the above inventions (Inventions 1 to 10), an electrode substrate arranged to face the color filter, and the color filter and the electrode substrate. A liquid crystal display device comprising a liquid crystal layer made of a liquid crystal material is provided (invention 11).

  According to the present invention, it is possible to prevent the occurrence of display unevenness due to vibration, impact, etc. during transportation of the liquid crystal display device, and to prevent the occurrence of bright spot defects caused by the peeling off of the protective layer. And a liquid crystal display device using the color filter can be provided.

It is a fragmentary sectional view showing the color filter concerning a 1st embodiment of the present invention. It is a fragmentary sectional view which shows the state after applying a predetermined load to the columnar convex part of the color filter which concerns on the 1st Embodiment of this invention. It is a fragmentary sectional view which shows the columnar convex part of the color filter which concerns on the 1st Embodiment of this invention, (A) is a blue colored layer located in the uppermost layer of the columnar laminated part which comprises the said columnar convex part, (B) is a green colored layer that is the second layer of the columnar laminated portion, (C) is a red colored layer that is located in the lowest layer of the columnar laminated portion, and (D) is the upper end of the columnar convex portion. It is a fragmentary sectional view which shows a part. It is a perspective view which shows the upper end part of the columnar convex part of the color filter which concerns on the 1st Embodiment of this invention. It is a process flow figure showing a manufacturing method of a color filter concerning a 1st embodiment of the present invention. It is a fragmentary sectional view showing other examples of composition of a color filter concerning a 1st embodiment of the present invention. It is a fragmentary sectional view showing a color filter concerning a 2nd embodiment of the present invention. It is a fragmentary sectional view which shows the state after applying a predetermined load to the columnar convex part of the color filter which concerns on the 2nd Embodiment of this invention. It is a fragmentary sectional view which shows the columnar convex part provided in the non-display area | region of the color filter which concerns on the 2nd Embodiment of this invention, (A) shows the upper end part of the columnar protrusion which comprises the said columnar convex part, (B) is a fragmentary sectional view which shows the upper end part of the said columnar convex part. It is a perspective view which shows the upper end part of the columnar convex part of the color filter which concerns on the 2nd Embodiment of this invention. It is a process flow figure showing a manufacturing method of a color filter concerning a 2nd embodiment of the present invention. It is a fragmentary sectional view showing other examples of composition of a color filter concerning a 2nd embodiment of the present invention. It is a fragmentary sectional view which shows the liquid crystal display device using the color filter which concerns on the 1st Embodiment of this invention. It is a fragmentary sectional view which shows the liquid crystal display device using the color filter which concerns on the 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Color filter]
[First Embodiment]
FIG. 1 is a partial cross-sectional view showing a color filter according to a first embodiment of the present invention, and FIG. 2 shows a state after a predetermined load is applied to the columnar convex portions of the color filter according to the first embodiment. FIG. 3 is a partial cross-sectional view showing a state, FIG. 3 is a partial cross-sectional view showing a columnar protrusion of the color filter according to the first embodiment, and FIG. 4 is a columnar protrusion of the color filter according to the first embodiment. It is a perspective view which shows the upper end part of a part.

  As shown in FIG. 1, the color filter 1 according to the first embodiment includes a transparent substrate 2 and a light shielding portion 3 formed in a predetermined pattern having an opening on one surface of the transparent substrate 2. A plurality of colored portions 4 provided so as to cover the opening (in this embodiment, three colors of a red colored portion 4R, a green colored portion 4G, and a blue colored portion 4B), and the light shielding portion 3 A columnar laminated part 5 provided on the transparent protective layer 6 covering the light shielding part 3, the colored part 4 and the columnar laminated part 5, a polyimide formed on the transparent protective layer 6 to a thickness of about 0.15 μm, etc. And an alignment film 7 made of In the color filter 1 according to the first embodiment, the columnar stacked portion 5 and the transparent protective layer 6 and the alignment film 7 covering the periphery thereof become the columnar convex portion 8 that functions as a spacer.

In such a color filter 1, as shown in FIG. 2, the color filter 1 is placed on a predetermined stage (not shown), and the top of the columnar convex portion 8 (the upper portion of the alignment film 7 on the columnar stacked portion 5). ) To the transparent substrate 2 in a vertical direction at a constant load speed up to 200 mN in 9 seconds using an ultra-micro hardness measuring device (product name: FISCHERSCOPE H100V, manufactured by Fischer Instruments). When held for 5 seconds in this state, the displacement D _{1 in the} direction perpendicular to the transparent substrate 2 at the position of the top of the columnar protrusion 8 before and after the load is 0.45 μm or more, preferably 0.45 to It is 2.0 μm, and particularly preferably 0.45 to 0.8 μm. When the displacement D ₁ is less than 0.45 [mu] m, display unevenness due to vibration or shock such as during transport occurs.

  Examples of the transparent substrate 2 include transparent rigid materials having no flexibility, such as non-alkali glass, quartz glass, Pyrex (registered trademark) glass, and synthetic quartz plates; and flexible materials such as transparent resin films and optical resin plates. However, the present invention is not limited to these. The thickness of the transparent substrate 2 can be appropriately set within a range of 200 to 1500 μm, for example.

  The light shielding part 3 can be configured, for example, as a cured body of a resin material containing light shielding particles such as carbon fine particles, a thin film having a thickness of about 1000 to 2000 mm, and a metal material such as chromium. The pattern shape of the light shielding portion 3 is not particularly limited as long as it is a pattern shape having a plurality of openings, and may be a plurality of stripe shapes, a lattice shape, or the like provided in parallel.

  The coloring portion 4 is provided so as to cover each of the openings which are the non-forming portions of the light shielding portion 3. The colored portion 4 is composed of a known negative type or positive type photosensitive resin material containing a desired colorant (pigment, dye, etc.). Further, the thickness of the colored portion 4 is not particularly limited, but as described later, each colored portion 4R, 4G, 4B and each colored layer 5R, 5G, 5B constituting the columnar laminated portion 5 are simultaneously formed. Since it is formed, the thickness of the liquid crystal layer in the liquid crystal display device manufactured using the color filter 1 according to the first embodiment (that is, the protruding height of the columnar stacked portion 5 and the like) is set as appropriate. do it.

  The columnar laminated portion 5 includes a red colored layer 5R, a green colored layer 5G, and a blue colored layer 5B made of each material constituting the colored portion 4 (the red colored portion 4R, the green colored portion 4G, and the blue colored portion 4B). 3 are stacked in this order. The height of the columnar laminated portion 5 is the thickness of the liquid crystal layer in the liquid crystal display device manufactured using the color filter 1 according to the first embodiment, and the thickness of the transparent protective layer 6 described later (on the columnar laminated portion 5). , Thickness on the colored portion 4) and the like, can be set as appropriate, for example, 3 to 15 μm.

  The columnar laminated portion 5 (the red colored layer 5R, the green colored layer 5G, and the blue colored layer 5B) may have a substantially cylindrical shape or a substantially rectangular shape such as a substantially rectangular parallelepiped shape or a substantially cubic shape. May be. In the first embodiment, an example in which the colored layers 5R, 5G, and 5B of the columnar stacked portion 5 have a cylindrical shape will be described.

As shown in FIG. 3, the diameter W ₃ of the upper bottom portion of the red colored layer 5R constituting the columnar stacked portion 5 is equal to or less than the width in the short direction of the light shielding portion 3 where the columnar stacked portion 5 is formed, and It is preferable that it is 30 micrometers or more, and it is more preferable that it is 40-100 micrometers. When the diameter W ₃ of the upper bottom portion of the red colored layer 5R located in the lowermost layer of the columnar laminated portion 5 is less than 30 μm, the flowing phenomenon of the materials constituting the green colored layer 5G and the blue colored layer 5B laminated thereon As a result, the amount of the colored layers 5G and 5B stacked decreases, and the columnar stacked portion 5 having a desired height may not be obtained.

On the other hand, in order to set the height of the columnar laminated portion 5 to a desired height, it is considered to increase the diameters W _{1 to} W ₃ of the upper bottom portions of the red colored layer 5R, the green colored layer 5G, and the blue colored layer 5B. However, when the diameters W _{1 to} W ₃ of the upper bottoms of all the colored layers 5R, 5G, 5B constituting the columnar laminated part 5 are increased in this way, the transparent protective layer covering the columnar laminated part 5 and its surroundings 6 and the columnar convex portion 8 constituted by the alignment film 7 become hard, and as a result, display unevenness due to vibration, impact, or the like occurs. However, in a color filter 1 of the first embodiment, the diameter W ₁ of the upper base portion of the blue colored layer 5B located on the uppermost layer of the at least columnar stack portion 5, on the red colored layer 5R located at the lowermost layer The diameter is smaller than the bottom diameter W ₃ . Thereby, the hardness of the columnar convex part 8 comprised by the columnar laminated part 5 and the transparent protective layer 6 and the orientation film 7 which coat | cover the circumference | surroundings is reduced, and the top part of the columnar convex part 8 before and behind the load on predetermined conditions is carried out. The displacement amount D ₁ can be set to 0.45 μm or more, and as a result, the occurrence of display unevenness due to vibration, impact, or the like can be suppressed.

Specifically, preferably the diameter W ₁ of the upper base portion of the blue colored layer 5B located on the uppermost layer of the columnar stack portion 5 5 to 40 m, more preferably 5 to 35 m, particularly preferably a 5 to 30 [mu] m, The ratio of the diameter W ₁ to the diameter W ₃ of the upper bottom portion of the red colored layer 5R located in the lowermost layer is preferably 1: 1.5 to 20, more preferably 1: 2 to 20, particularly preferably 1: Each of the colored layers 5R, 5G, and 5B can be stacked to form the columnar stacked portion 5 so as to be 2.5 to 20. Thus, the height of the columnar stack section 5 (height of the light shielding portion 3 side to the top P ₁ of the blue colored layer 5B located in the uppermost layer) and 3 to 15 [mu] m, and the columnar protrusions 8 as described below The diameter W _{4 of the} upper bottom can be made 30 μm or less (see FIG. 4). As a result, even if the columnar convex portion 8 is formed at a desired height, it is possible to suppress the occurrence of display unevenness due to vibration, impact, or the like. The diameter W ₂ of the upper bottom of the green colored layer 5G is a blue coloring layer 5B having a diameter W ₁ or a coloring layer located in the uppermost layer, the diameter W of the red colored layer 5R is a colored layer located in the lowermost layer It is not particularly limited as long as it is ₃ or less, and may be set as appropriate according to the desired height of the columnar laminated portion 5, the hardness of the columnar convex portion 8, and the like.

In the first embodiment, the diameter of the upper bottom portion of the colored layer refers to the colored layer (the first layer located in the lowest layer of the columnar laminated portion 5 from the vertices P _{1 to} P _{3 of the} colored layers 5B, 5G, and 5R. In this embodiment, the length in the direction perpendicular to the transparent substrate 2 to the surface of the central portion of the colored portion of the same color as the red colored layer 5R) (the red colored portion 4R in the first embodiment) is 100%. In this case, points Q _{1 to} Q ₃ having a length of 5% in the direction perpendicular to the transparent substrate 2 (the axial direction of the columnar stacked portion 5) from the vertices P _{1 to} P _{3 of the} colored layers 5B, 5G, and 5R. The diameters of the colored layers 5B, 5G, and 5R in the planes S1 to S3 substantially parallel to the transparent substrate 2 are included (see FIGS. 3A to 3C). The diameter of the upper bottom portion of the colored layer can be measured using a predetermined measuring device (for example, Super PSIS-6008 (product name), manufactured by SNU Precision).

  The transparent protective layer 6 is provided so as to cover the light-shielding part 3, each colored part 4, and the columnar laminated part 5. By providing the transparent protective layer 6, the elution and degassing of impurity ion components from the colored portions 4 and the columnar laminated portions 5 (the red colored layer 5R, the green colored layer 5G, and the blue colored layer 5B) are performed. Can be prevented.

The composition for forming a transparent protective layer used for forming the transparent protective layer 6 has, for example, a curing temperature of 80 to 160 ° C., preferably 100 to 140 ° C., and a viscosity (25 ° C.) of 2 to 10 Pa. · S, preferably 2 to 5 Pa · s. By using such a composition for forming a transparent protective layer, the displacement D ₁ of the top of the columnar convex portion 8 before and after loading under a predetermined condition can be set to 0.45 μm or more. Specifically, a composition for forming a transparent protective layer containing a polymerization initiator having a 10-hour half-life temperature of 60 to 105 ° C. can be used. In the first embodiment, the “curing temperature” is measured when the transparent protective layer forming composition is held at 30 ° C. for 5 minutes and then heated to 230 ° C. at a temperature rising rate of 10 ° C./min. It shall mean the temperature at the peak top point of the calorific value in the DSC (Differential scanning calorimetry) curve.

The thickness of the transparent protective layer 6 is such that the thickness T _OC of the transparent protective layer 6 in the upper part of the columnar laminated portion 5 is preferably 0.35 μm or more, more preferably 0.35 to 5 μm, particularly preferably 0.35 to 1 μm. Should be set to be. Specifically, by setting the film thickness of the transparent protective layer 6 at the center of each colored portion 4R, 4G, 4B to preferably 1 to 10 μm, more preferably 1.2 to 5 μm, the columnar laminated portion 5 The thickness T _OC of the transparent protective layer 6 in the upper part of can be in the above range. In general, when the transparent protective layer 6 and the alignment film 7 covering the columnar laminated portion 5 are chipped and peeled off due to vibration or impact during transportation of a liquid crystal display device using a color filter, the columnar laminated portion together with them. Also, the colored layers 5R, 5G, and 5B that constitute 5 are dropped off, and the debris including the colored layers 5R, 5G, and 5B causes a bright spot defect. When the hardness of the transparent protective layer 6 is increased so that the bright spot defect does not occur, the hardness of the columnar convex portion 8 (spacer) composed of the columnar laminated portion 5, the transparent protective layer 6 and the alignment film 7 increases. Therefore, since display unevenness due to vibration, impact, etc. occurs, the hardness of the transparent protective layer 6 cannot be increased. Therefore, as a result of intensive studies conducted by the present inventors in order to solve both the display unevenness problem and the bright spot defect problem, the thickness of the transparent protective layer 6 at the upper portion of the columnar laminated portion 5 is transparently protected by vibration, impact, or the like. It turned out to be Merckmar whether the layer 6 would be missing. That is, it was found that when the thickness T _OC of the transparent protective layer 6 on the upper part of the columnar laminated portion 5 is less than 0.35 μm, the transparent protective layer 6 and the alignment film 7 are chipped off due to vibration or impact. . Therefore, in the first embodiment, by setting the thickness of the transparent protective layer 6 above the columnar laminated portion 5 to 0.35 μm or more, the transparent protective layer 6 and the alignment film 7 are prevented from being chipped and peeled off. Further, it is possible to suppress the occurrence of a bright spot defect due to vibration or impact. Even if only the alignment film 7 is peeled off on the colored portion 4, the alignment film 7 has a thin thickness of about 0.15 μm, so there is no possibility of causing a bright spot defect.

In the first embodiment, the thickness T _OC of the transparent protective layer 6 in the upper part of the columnar laminated portion 5 is a colored layer located in the uppermost layer of the columnar laminated portion 5 (in the first embodiment, a blue colored layer). in the highest on the position P ₁ of 5B), it means the vertical thickness on the surface of the transparent substrate 2. As will be described later, when the columnar laminated portions 5 are formed by laminating the colored layers 5R, 5G, and 5B by photolithography, the columnar laminated layers are usually formed due to the flowing phenomenon of the materials constituting the colored layers 5R, 5G, and 5B. Since the axial core portion of the portion 5 is the highest, the thickness T _OC is the direction perpendicular to the surface of the transparent substrate 2 in the axial core portion of the blue colored layer 5B located at the uppermost layer of the columnar laminated portion 5. It means the thickness of the transparent protective layer 6 (the length between the points P ₁ P ₄ ) (see FIG. 3D).

As shown in FIG. 4, the diameter W ₄ of the upper bottom portion of the columnar convex portion 8 constituted by the columnar laminated portion 5 and the transparent protective layer 6 and the alignment film 7 covering the periphery thereof (the uppermost position of the columnar convex portion 8). the center of the colored layers and the colored portion of the same color (red color layer 5R in the first embodiment) (red colored portion 4R in the first embodiment) from the point P ₄ located in the lowermost layer of the columnar stack portion 5 When the length in the vertical direction with respect to the transparent substrate 2 to the surface of the alignment film 8 on the portion is 100%, the vertical direction from the uppermost point P ₄ of the columnar convex portion 8 to the transparent substrate 2 (columnar stacked portion 5 The diameter of the columnar convex portion 8 in the plane S ₄ substantially parallel to the transparent substrate 2 including the point Q ₄ having a length of 5% in the axial direction) is preferably 30 μm or less, and preferably 5 to 28 μm. Is more preferable, and it is especially preferable that it is 5-25 micrometers. If the diameter W ₄ exceeds 30 μm, display unevenness due to vibration, impact, or the like may occur. In FIG. 4, the alignment film 7 is not shown for convenience of explanation.

A method for manufacturing the color filter 1 according to the first embodiment will be described below. FIG. 5 is a process flow diagram illustrating the method for manufacturing the color filter 1 according to the first embodiment.
First, a transparent substrate 2 is prepared, and a resin composition for forming the light-shielding portion 3 on the transparent substrate 2 is known by spin coating, roll coating, gravure coating, die coating, slit coating, and the like. A coating film is formed by applying the coating method, and after the coating film is dried, exposure and development are performed using a mask having a desired pattern, thereby forming a light-shielding portion 3 having a predetermined pattern shape having an opening. (FIG. 5A). In addition, when forming the light-shielding part 3 with a metal chromium etc., what is necessary is just to form a thin film using well-known methods, such as sputtering method, a vacuum evaporation method, CVD method, and to pattern-etch this.

Next, a resin for forming the red colored portion 4R and the red colored layer 5R on the transparent substrate 2 provided with the light shielding portion 3 having a desired pattern shape so as to cover the light shielding portion 3 and the opening. The composition is applied to form a coating film L ₁ (FIG. 5B). Examples of the coating method of the resin composition include known coating methods such as spin coating, roll coating, gravure coating, die coating, and slit coating.

The coating film L ₁ thus formed is dried, exposed and developed using a mask having a desired pattern, so that the red colored portion 4R is formed at the desired position of the light shielding portion 3 in the opening on the transparent substrate 2. A red colored layer 5R constituting the lowermost layer of the columnar stacked portion 5 is formed (FIG. 5C). At this time, in consideration of the height of the columnar laminated portion 5 to be formed, the diameter W ₁ of the upper bottom portion of the blue colored layer 5B located at the uppermost layer of the columnar laminated portion 5 and the upper bottom portion of the red colored layer 5R as the ratio of the diameter W ₃ becomes a predetermined range, and the diameter W ₃ of the upper base portion of the red colored layer 5R is to form the red colored layer 5R so as to have a predetermined range.

Subsequently, in order to form the green colored portion 4G and the green colored layer 5G on the transparent substrate 2 on which the light shielding portion 3, the red colored portion 4R, and the red colored layer 5R are formed so as to cover them and the opening. The resin composition is applied to form a coating film L ₂ (FIG. 5D). Examples of the application method of the resin composition include the above-described application methods. The thus coated film L ₂ formed and dried, exposed using a mask having a desired pattern, by developing, green colored portion 4G the opening adjacent to the red colored portion 4R of the transparent substrate 2, A green colored layer 5G is formed on the red colored layer 5R on the light shielding portion 3 (FIG. 5E).

Further, on the transparent substrate 2 on which the light-shielding portion 3, the red coloring portion 4R, the green coloring portion 4G, the red coloring layer 5R, and the green coloring layer 5G are formed, and the blue coloring portion 4B. and a resin composition for forming a blue colored layer 5B to form a coating film L ₃ (FIG. 5 (F)). Examples of the application method of the resin composition include the above-described application methods. The thus coated film L ₃ formed and dried, exposed using a mask having a desired pattern, by developing, the blue colored portion 4B on the remaining openings on the transparent substrate 2, on the light shielding portion 3 of A blue colored layer 5B is formed over the green colored layer 5G (FIG. 5G). At this time, the diameter W ₁ of the upper bottom portion of the blue colored layer 5B is in a predetermined range, and the ratio of the diameter W ₁ to the diameter W ₃ of the upper bottom portion of the red colored layer 5R is in a predetermined range. The blue colored layer 5B is formed. Thereby, the columnar laminated portion 5 having a three-layer structure is formed on the light shielding portion 3.

Then, a transparent resin is applied with a predetermined film thickness so as to cover the light shielding part 3, the colored part 4, and the columnar laminated part 5, and a transparent protective layer 6 made of the transparent resin is formed (FIG. 5 (H)). At this time, the transparent protective layer 6 is formed so that the thickness T _{OC of} the transparent protective layer 6 covering the columnar laminated portion 5 at the upper portion of the columnar laminated portion 5 is 0.35 μm or more. For example, as the composition for forming a transparent protective layer, one having a curing temperature of 80 to 160 ° C. and a viscosity (25 ° C.) of 2 to 10 Pa · s is used, and the film of the transparent protective layer 6 at the center of each colored portion 4 The transparent protective layer-forming composition is applied so that the thickness becomes 1 to 10 μm, and the thickness T _OC of the transparent protective layer 6 is 0.35 μm or more by curing reaction at 100 to 230 ° C./min for 15 to 60 minutes. It can be.

  Finally, an alignment film 7 made of polyimide or the like is formed on the transparent protective layer 6, and a rubbing process is performed as desired (FIG. 5 (I)).

The color filter 1 obtained as described above is constant up to 200 mN in 9 seconds on the top of the columnar protrusion 8 using an ultra-micro hardness measuring device (product name: FISCHERSCOPE H100V, manufactured by Fisher Instruments). Displacement in the vertical direction with respect to the transparent substrate 2 of the top of the columnar convex portion 8 before and after the load when a load is applied in the vertical direction to the transparent substrate 2 at the load speed and held for 5 seconds. The amount D ₁ is 0.45 μm or more. Therefore, as will be apparent from the examples described later, display unevenness caused by vibrations or impacts during transportation or the like can be suppressed. Moreover, since the thickness T _{OC of} the transparent protective layer 6 covering the periphery of the columnar laminated portion 5 at the upper portion of the columnar laminated portion 5 is 0.35 μm or more, the transparent protective layer 6 and the alignment film are caused by vibration or impact. Since 7 can be prevented from being chipped off and peeled off, the occurrence of a bright spot defect due to fragments including the colored layers 5R, 5G, and 5B can also be suppressed.

  In the first embodiment described above, the colored portion 4 is configured by three colors of the red colored portion 4R, the green colored portion 4G, and the blue colored portion 4B, but as long as it includes at least two colored portions. It is not limited, and may be configured by two colors of the red coloring portion 4R and the green coloring portion 4G or the blue coloring portion 4B. In addition to the three colored portions 4R, 4G, and 4B, one or more of other colored portions such as yellow, magenta, and cyan may be included. One or more of colored portions of other colors such as yellow, magenta, and cyan may be included instead of any one or more of the portions 4R, 4G, and 4B.

  In the first embodiment, the columnar stacked portion 5 has a three-layer structure of the red colored layer 5R, the green colored layer 5G, and the blue colored layer 5B in order from the lower side (the light shielding portion 3 side). As long as a desired height can be obtained as the stacked portion 5, a two-layer structure or a stacked structure of four or more layers may be used. When the columnar laminated portion 5 has a laminated structure of four or more layers, for example, the columnar laminated portion 5 includes a red colored layer 5R, a green colored layer 5G, and a blue colored layer 5B, and a colored layer such as yellow, magenta, and cyan. can do. Further, the order of their lamination is not particularly limited.

When the colored portion 4 is composed of four colors and the columnar laminated portion 5 has a laminated structure of four or more layers, for example, as shown in FIG. 6, a yellow colored portion 4Y is provided adjacent to the blue colored portion 4B to form a columnar shape. The yellow colored layer 5Y may be provided on the blue colored layer 5B of the stacked portion 5. In this case, when the length in the vertical direction with respect to the transparent substrate 2 from the top of the yellow colored layer 5Y to the surface at the center of the red colored portion 4R from the top of the yellow colored layer 5Y is 100%, The diameter of the yellow colored layer 5Y in a plane substantially parallel to the transparent substrate 2 including a point having a length of 5% from the apex of the yellow colored layer 5Y in the direction perpendicular to the transparent substrate 2 (the axial direction of the columnar stacked portion 5). ) Is preferably 5 to 40 μm, more preferably 5 to 35 μm, particularly preferably 5 to 30 μm, and the ratio of the diameter of the upper base of the yellow colored layer 5Y to the diameter W ₃ of the upper base of the red colored layer 5R is preferable May be 1: 1.5 to 40, more preferably 1: 2 to 20, and particularly preferably 1: 2.5 to 20.

  In the color filter 1 which concerns on 1st Embodiment, the ITO layer may be formed in the back surface (surface in which the coloring part 4 etc. are not formed) of the transparent substrate 2. FIG. By forming the ITO layer, it is possible to prevent static electricity from being charged in the manufacturing process of the liquid crystal display device using the color filter 1, or to prevent electrostatic breakdown of the liquid crystal display device (electrode substrate). can do.

[Second Embodiment]
The color filter according to the second embodiment will be described below. FIG. 7 is a partial cross-sectional view illustrating the color filter according to the second embodiment, and FIG. 8 illustrates a state after a predetermined load is applied to the columnar protrusions of the color filter according to the second embodiment. FIG. 9 is a partial cross-sectional view, FIG. 9 is a partial cross-sectional view showing columnar protrusions provided in a non-display area of the color filter according to the second embodiment, and FIG. 10 is a color view according to the second embodiment. It is a perspective view which shows the upper end part of the columnar convex part of a filter.

  As shown in FIG. 7, the color filter 10 according to the second embodiment includes a transparent substrate 12 and a light-shielding portion 13 formed in a predetermined pattern having an opening on one surface of the transparent substrate 12. A plurality of colored portions 14 (in this embodiment, three colors of a red colored portion 14R, a green colored portion 14G, and a blue colored portion 14B) provided so as to cover the opening, and the light shielding portion 13 The provided columnar protrusion 15, the transparent protective layer 16 covering the light shielding portion 13, the colored portion 14 and the columnar protrusion 15, and an alignment film made of polyimide or the like formed on the transparent protective layer 16 to a thickness of about 0.15 μm. 17. In the color filter 10 according to the second embodiment, the columnar protrusion 15 and the transparent protective layer 16 and the alignment film 17 covering the periphery thereof become the columnar convex portion 18 that functions as a spacer.

In such a color filter 10, as shown in FIG. 8, an ultra-micro hardness measuring device (product name: FISCHERSCOPE H100V, Fisher Instruments) is formed on the top of the columnar protrusion 18 (on the alignment film 17 on the columnar protrusion 15). When a load is applied in a direction perpendicular to the transparent substrate 12 at a constant load speed up to 200 mN in 9 seconds and the state is maintained for 5 seconds, the position of the top of the columnar protrusion 18 before and after the load is The displacement D ₁₀ in the vertical direction with respect to the transparent substrate 12 is 0.45 μm or more, preferably 0.45 to 2.0 μm, particularly preferably 0.45 to 0.8 μm. When the displacement amount D ₁₀ of the top portion of the columnar protrusions 18 is less than 0.45 [mu] m, display unevenness due to vibration or shock such as during transport occurs.

  Examples of the transparent substrate 12 include transparent rigid materials having no flexibility, such as non-alkali glass, quartz glass, Pyrex (registered trademark) glass, and synthetic quartz plates; and flexible materials such as transparent resin films and optical resin plates. However, the present invention is not limited to these. The thickness of the transparent substrate 12 can be appropriately set within a range of 200 to 1500 μm, for example.

The light shielding portion 13 is configured as a laminated structure in which two colored portions are laminated on the non-display region 19 a of the color filter 10. In the second embodiment, as shown in FIG. 7, among the red colored portion 14 </ b> R and the green colored portion 14 </ b> G provided on the transparent substrate 12, the red colored portion stacked on the non-display area 19 a of the color filter 10. The laminated structure of 14R _h and the green colored portion 14G _h functions as the light shielding portion 13.

The coloring portion 14 is provided so as to cover each of the opening portions as the display region 19b of the color filter 10. The colored portion 14 is made of a known negative type or positive type photosensitive resin material containing a desired colorant (pigment, dye, etc.). Further, the thickness of the colored portion 14 is not particularly limited, as will be described later, the display region 19b to the red coloring portions 14R _d and the green colored portions 14G _d red colored portion 14R in the non-display region 19a at the same time to form a _h and a green colored portion 14G _h are formed, and a blue colored portion 14B is formed in the display region 19b, and at the same time, columnar protrusions on the above laminated structure (a laminated structure of the red colored portion 14R _h and the green colored portion 14G _h ). 15 is formed, the thickness of the colored portion 14 may be appropriately set in consideration of the thickness of the liquid crystal layer in the liquid crystal display device manufactured using the color filter 10 according to the second embodiment.

Pillar projection 15 is configured blue colored layer 15B is formed in a columnar shape on the light shielding portion 13 composed of a laminated structure of the red colored portion 14R _h and the green colored portions 14G _h. The heights of the columnar protrusions 15 are the thickness of the liquid crystal layer in the liquid crystal display device manufactured using the color filter 10 according to the second embodiment, the red colored portion 14R _h and the green color stacked in the non-display area 19a. the thickness of the colored portions 14G _h, and can be appropriately set in consideration of the thickness and the like of the transparent protective layer 16 to be described later, for example, it is 2 to 15 [mu] m.

  The columnar protrusion 15 may have a substantially cylindrical shape or a substantially rectangular shape such as a substantially rectangular parallelepiped shape or a substantially cubic shape. In the second embodiment, an example in which the shape of the columnar protrusion 15 is a columnar shape will be described.

As shown in FIG. 9, the diameter W ₁₁ of the upper bottom portion of the blue colored layer 15B constituting the columnar protrusion 15 is preferably 5 to 40 μm, more preferably 5 to 35 μm, and 5 to 30 μm. Is particularly preferred. If the diameter W ₁₁ exceeds 40 μm, the hardness of the columnar protrusion 15 increases, and it may be difficult to suppress display unevenness due to vibration, impact, etc. If it is less than 5 μm, the columnar protrusion 15 (blue colored layer 15B), the amount of the laminated blue colored layer 15B decreases due to the flowing phenomenon of the material constituting the 15 (blue colored layer 15B), and the columnar protrusion 15 having a desired height may not be obtained.

In the second embodiment, the diameter of the upper base portion of the colored layer, the red in the colored portion (second embodiment provided in the non-display area of the transparent substrate 12 from the apex P ₁₁ of the colored layer 15B When the length in the direction perpendicular to the transparent substrate 12 to the surface of the central portion of the colored portion (the colored portion 14R _d in the second embodiment) of the same color as the colored portion 14R _h is 100% Coloring in a plane S ₁₁ substantially parallel to the transparent substrate 12 includes a point Q ₁₁ having a length of 5% in the direction perpendicular to the transparent substrate 12 (the axial direction of the columnar protrusion 15) from the vertex P11 of the colored layer 15B. This means the diameter of the layer 15B (see FIG. 9A). The diameter of the upper bottom portion of the colored layer can be measured using a predetermined measuring device (for example, Super PSIS-6008 (product name), manufactured by SNU Precision).

  The transparent protective layer 16 is provided so as to cover the light shielding portion 13, each colored portion 14, and the columnar protrusion 15. By providing the transparent protective layer 16, it is possible to prevent the elution and degassing of impurity ion components from the colored portions 14 and the columnar protrusions 15 (blue colored layer 15B).

As a composition for transparent protective layer formation used in order to form the transparent protective layer 16, a curing temperature is 80-160 degreeC, Preferably it is 100-140 degreeC, and viscosity (25 degreeC) is 2-10 Pa. · S, preferably 2 to 5 Pa · s. By using such a composition for forming a transparent protective layer, the amount of displacement D ₁₀ of the top of the columnar convex portion 18 before and after loading under a predetermined condition can be set to 0.45 μm or more. Specifically, a composition for forming a transparent protective layer containing a polymerization initiator having a 10-hour half-life temperature of 60 to 105 ° C. can be used. In the second embodiment, the “curing temperature” is measured when the transparent protective layer forming composition is held at 30 ° C. for 5 minutes and then heated to 230 ° C. at a temperature rising rate of 10 ° C./min. It means the temperature at the peak top point of the calorific value in the DSC (Differential scanning calorimetry) curve.

The thickness of the transparent protective layer 16 is such that the thickness T _OC of the transparent protective layer 16 above the columnar protrusion 15 is preferably 0.35 μm or more, more preferably 0.35 to 5 μm, and particularly preferably 0.35 to 1 μm. What is necessary is just to set. Specifically, by setting the film thickness of the transparent protective layer 16 at the center of each colored portion 14R _d , 14G _d , 14B to preferably 1 to 10 μm, more preferably 1.2 to 5 μm, The thickness T _OC of the transparent protective layer 16 at the top of 15 can be in the above range. In general, the transparent protective layer 16 and the alignment film 17 covering the columnar protrusions 15 are chipped off due to vibration or impact during transportation of a liquid crystal display device using a color filter, and the columnar protrusions 15 are formed together with them. The colored layer (blue colored layer 15B) to be dropped off, and the debris containing the colored layer causes a defective bright spot. When the hardness of the transparent protective layer 16 is increased so as not to cause a bright spot defect, the hardness of the columnar protrusions 15 and the columnar convex portions 18 composed of the transparent protective layer 16 and the alignment film 17 is increased, and vibration is caused. Since display unevenness due to the impact or the like occurs, the hardness of the transparent protective layer 16 cannot be increased. Accordingly, as a result of intensive studies by the present inventors in order to solve both the display unevenness problem and the bright spot defect problem, the thickness of the transparent protective layer 16 on the top of the columnar protrusion 15 is reduced by vibration, impact, or the like. 16 and the alignment film 17 were found to be Merckmar. That is, it was found that when the thickness T _OC of the transparent protective layer 16 above the columnar protrusion 15 is less than 0.35 μm, the transparent protective layer 16 and the alignment film 17 are lost due to vibration, impact, or the like. Therefore, in the second embodiment, by setting the thickness of the transparent protective layer 16 on the upper part of the columnar protrusion 15 to 0.35 μm or more, the transparent protective layer 16 and the alignment film 17 are prevented from being chipped and peeled off, The occurrence of display unevenness and bright spot defects due to vibration, impact, or the like can be suppressed. Even if only the alignment film 17 is peeled off on the colored portion 14, the alignment film 17 is as thin as about 0.15 μm, so that there is no possibility of causing a bright spot defect.

In the second embodiment, the thickness T _OC of the transparent protective layer 16 on the top of the columnar protrusion 15 is the surface of the transparent substrate 12 on the highest position P ₁₁ of the columnar protrusion 15 (blue colored layer 15B). On the other hand, it means the thickness in the vertical direction. As will be described later, the red colored portion 14B _h and the green colored portion 14G _h are laminated on the non-display area 19a of the transparent substrate 12 by photolithography to form the light shielding portion 13, and the columnar protrusion 15 is formed on the light shielding portion 13. In this case, the axial core portion of the columnar protrusion 15 is usually the highest due to the inflow phenomenon of the material constituting the columnar protrusion 15 (blue colored layer 15B). Therefore, the thickness T _OC of the transparent protective layer 16 is the thickness (point P ₁₁ P) of the transparent protective layer 16 in the direction perpendicular to the surface of the transparent substrate 12 in the axial center portion of the columnar protrusion 15 (blue colored layer 15B). ₁₄ ) (refer to FIG. 9B).

As shown in FIG. 10, the diameter W ₁₄ of the upper bottom portion of the columnar protrusion 18 constituted by the columnar protrusion 15 and the transparent protective layer 16 covering the periphery thereof (from the uppermost point P ₁₄ of the columnar protrusion 18 to the transparent substrate). 12 on the central portion of the colored portion (red colored portion 14R _d in the second embodiment) of the same color as the colored portion (in the second embodiment, the red colored portion 14R _h ) provided in the non-display area on 12 When the length in the vertical direction with respect to the transparent substrate 12 to the surface of the alignment film 18 is 100%, the vertical direction from the uppermost point P ₁₄ of the columnar protrusion 18 to the transparent substrate 12 (the axial direction of the columnar protrusion 15) ) to including a point Q ₁₄ 5% of the length, the diameter of the columnar protrusions 18 in a plane S ₁₄ substantially parallel to the transparent substrate 12) is preferably at 30μm or less, and more in the range of 5~28μm 5 to 25 μm is particularly preferable. That's right. When the diameter W ₁₄ exceeds 30 [mu] m, there is a risk that display unevenness due to vibration or shocks may occur.

  A method for manufacturing the color filter 10 according to the second embodiment will be described below. FIG. 11 is a process flow diagram illustrating a method for manufacturing the color filter 10 according to the second embodiment.

First, a transparent substrate 12 is prepared, and a resin composition for forming the red colored portions 14R _d and 14R _h is applied so as to cover the non-display area 19a and the display area 19b on the transparent substrate 12, A coating film L ₁₁ is formed (FIG. 11A). Examples of the coating method of the resin composition include known coating methods such as spin coating, roll coating, gravure coating, die coating, and slit coating.

Such a coating film L ₁₁ formed by the drying, by exposure, development using a mask having a desired pattern, the red colored portion in a predetermined position in the non-display region 19a and the display region 19b of the transparent substrate 12 14R _d and 14R _h are formed (FIG. 11B).

Subsequently, green colored portions 14G _d and 14G _h are formed on the transparent substrate 12 on which the red colored portions 14R _d and 14R _h are formed so as to cover the red colored portions 14R _d and 14R _h and the display region 19b. A resin composition is applied to form a coating film L ₁₂ (FIG. 11C). Examples of the application method of the resin composition include the above-described application methods. The thus coated film L ₁₂ formed and dried, exposed using a mask having a desired pattern, by developing a predetermined position adjacent to the red colored portion 14R _d of the display region 19b (opening) to thereby form a green colored section 14G _d, even the non-display area red-colored portion on 14R _h on 19a to form a green colored section 14G _h (FIG. 11 (D)). In this way, a laminated structure of the red colored portion 14R _h and the green colored portion 14G _h is formed on the non-display area 19a, and the laminated structure functions as the light shielding portion 13.

Further, on the transparent substrate 12 on which the red coloring portions 14R _d and 14R _h and the green coloring portions 14G _d and 14G _h are formed, the blue coloring portion 14B and the columnar protrusion 15 ( the resin composition for forming a blue colored layer 15B) to form a coating film L ₁₃ (FIG. 11 (E)). Examples of the application method of the resin composition include the above-described application methods. The thus coated film L ₁₃ formed and dried, exposed using a mask having a desired pattern, by developing, to form a blue colored portion 14B to the rest of the opening in the display region 19b, hide forming a column-shaped projections 15 (blue colored layer 15B) on the light-shielding portion 13 having a laminated structure of the formed red color portions 14R _h and the green colored portions 14G _h in the area 19a (FIG. 11 (F)). In this case, to form the column-shaped projections 15 (blue colored layer 15B) so that the diameter W ₁ of the upper bottom portion of the pillar projection 15 (blue colored layer 15B) has a predetermined range.

Then, a transparent resin material is applied in a predetermined film thickness so as to cover the red colored portions 14R _d and 14R _h , the green colored portions 14G _d and 14G _h , the blue colored portion 14B, and the columnar protrusions 15 (blue colored layer 15B). Then, the transparent protective layer 16 is formed (FIG. 11G). At this time, the transparent protective layer 16 is formed so that the thickness T _{OC of} the transparent protective layer 16 covering the columnar protrusions 15 at the upper part of the columnar protrusions 15 is 0.35 μm or more. For example, a transparent protective layer forming composition having a curing temperature of 80 to 160 ° C. and a viscosity (25 ° C.) of 2 to 10 Pa · s is used, and at least each colored portion 14 (red colored portion 14R _d , green colored) The composition for forming a transparent protective layer is applied such that the film thickness of the transparent protective layer 16 in the central portion of any one of the portion 14G _d and the blue colored portion 14B) is 1 to 10 μm, and the heating rate is 100 to 230. The thickness T _OC of the transparent protective layer 16 can be set to 0.35 μm or more by heating and curing for 15 to 60 minutes at ° C./min.

  Finally, an alignment film 17 made of polyimide or the like is formed on the transparent protective layer 16, and a rubbing process is performed as desired (FIG. 11 (H)).

The color filter 10 obtained as described above is constant up to 200 mN in 9 seconds using an ultra-micro hardness measuring device (product name: FISCHERSCOPE H100V, manufactured by Fisher Instruments) on the top of the columnar protrusion 18. When the load is applied in a direction perpendicular to the transparent substrate 12 at a load speed of 5 mm and is held for 5 seconds in the state as it is, the amount of displacement in the direction perpendicular to the transparent substrate 12 of the top of the columnar protrusion 18 before and after the load is D ₁₀ is 0.45 μm or more. Therefore, as will be apparent from the examples described later, display unevenness caused by vibrations or impacts during transportation or the like can be suppressed. In addition, since the thickness T _{OC of} the transparent protective layer 16 covering the periphery of the columnar protrusions 15 is 0.35 μm or more, the transparent protective layer 16 and the alignment film 17 are caused by vibration or impact. Since it is possible to suppress chipping and peeling off, it is possible to suppress defective bright spots due to fragments including the columnar protrusions 15 (blue colored layer 15B).

In the second embodiment described above, the coloring unit 14, the red colored portion 14R _d, green colored portion 14G _d, and are constituted by three colors of blue colored portion 14B, the three colors of the colored portions 14R _d , 14G _d , 14B, one or more of colored portions of other colors such as yellow, magenta, and cyan may be included, or the three colored portions 14R _d , 14G _d , 14B may be included. One or more of the colored portions of other colors such as yellow, magenta, and cyan may be included instead of any one of the above.

  Further, in the second embodiment, the columnar protrusion 15 is configured by the blue colored layer 15B, but may be configured by a red colored layer or a green colored layer, or a laminated structure of two or more colored layers. You may be comprised as a columnar laminated part which has. When the columnar protrusion 15 is configured as a columnar laminated portion having a laminated structure of two or more colored layers, a red colored layer, a green colored layer, or a blue colored layer 15B and a colored layer of a color such as yellow, magenta, and cyan It can be configured to include. Further, the order of their lamination is not particularly limited.

For example, when the columnar protrusion 15 is configured as a columnar stacked portion having a stacked structure of two colored layers, the colored portion 14 may be configured with four colors. Specifically, as shown in FIG. 12, a columnar laminate having a laminated structure in which a yellow colored portion 14Y is provided adjacent to the blue colored portion 14B, and the columnar protrusion 15 is laminated on the blue colored layer 15B. What is necessary is just to comprise as a part. In this case, when the apex of the diameter (the yellow colored layer 15Y of the upper base portion of the yellow colored layer 15Y to the surface at the center of the red colored portion 14R _d, and 100% the length of the direction perpendicular to the transparent substrate 12, The diameter of the yellow colored layer 15Y in a plane substantially parallel to the transparent substrate 12 including a point having a length of 5% in the direction perpendicular to the transparent substrate 12 (the axial direction of the columnar laminated portion) from the vertex of the yellow colored layer 15Y. ) Is preferably 5 to 40 μm, more preferably 5 to 35 μm, and particularly preferably 5 to 30 μm, and the yellow colored layer 15Y positioned at the uppermost layer of the columnar laminated portion is positioned at the uppermost diameter and the lowermost layer. the ratio between the diameter W ₁₁ of the upper base portion of the blue colored layer 15B which is preferably 1: 1.5 to 20, more preferably 1: 2 to 20, particularly preferably 1: 5 to 20 To be laminated respective colored layers 15B, the 15Y. Accordingly, the height of the columnar laminated portion (the height from the upper surface of the colored portion 14 to the top of the yellow colored layer 15Y positioned at the uppermost layer) is set to 2 to 15 μm, and the diameter W ₁₄ of the upper bottom portion of the columnar convex portion 18 is set. It can be 30 μm or less (see FIG. 10). As a result, even if the columnar protrusion 18 is formed at a desired height, it is possible to suppress the occurrence of display unevenness due to vibration, impact, or the like.

  In the color filter 10 according to the second embodiment, an ITO layer may be formed on the back surface of the transparent substrate 12 (the surface on which the colored portion 14 or the like is not formed). By forming the ITO layer, it is possible to prevent static electricity from being charged in the manufacturing process of the liquid crystal display device using the color filter 10, or to prevent electrostatic breakdown of the liquid crystal display device (electrode substrate). can do.

[Liquid Crystal Display]
The color filters 1 and 10 according to the first and second embodiments described above can be suitably used as a color filter for an in-plane switching (IPS) type liquid crystal display device. Hereinafter, an IPS liquid crystal display device using the color filters 1 and 10 according to the first and second embodiments will be described. 13 is a partial cross-sectional view showing an IPS mode liquid crystal display device using the color filter 1 according to the first embodiment, and FIG. 14 is an IPS mode liquid crystal using the color filter 10 according to the second embodiment. It is a fragmentary sectional view showing a display.

  As shown in FIGS. 13 and 14, the IPS liquid crystal display device 20, 30 includes a color filter 1, 10 according to the first or second embodiment, and an electrode substrate that is disposed to face the color filter 1, 10. 21 and 31, and liquid crystal layers 22 and 32 in which a liquid crystal material is sealed in a gap between the color filters 1 and 10 and the electrode substrates 21 and 31, and the color filters 1 and 10 and the electrode substrates 21 and 31 are sealed. It is sealed with a material (not shown).

  The electrode substrates 21, 31 include transparent substrates 21a, 31a, TFTs 21b, 31b provided on the transparent substrates 21a, 31a, pixel electrodes 21c, 31c connected to the drain electrodes of the TFTs 21b, 31b, and common electrodes 21d, 31d. The TFTs 21 b and 31 b on the electrode substrates 21 and 31 are located in regions where the light shielding portions 3 and 13 of the color filters 1 and 10 are provided when the electrode substrates 21 and 31 are arranged to face the color filters 1 and 10. In addition, the columnar convex portions 8 and 18 of the color filters 1 and 10 are provided on the transparent substrates 21a and 31a so that the upper portions of the TFTs 21b and 31b are in contact with each other. Note that an alignment film may or may not be provided on the electrode substrates 21 and 31.

  The pixel electrodes 21c and 31c and the common electrodes 21d and 31d are made of indium tin oxide (ITO), zinc oxide (ZnO), tin oxide (SnO), or an alloy thereof, a sputtering method, a vacuum evaporation method, a CVD method, or the like. The film is formed by forming a thin film by the general film forming method and then performing patterning.

  Note that the back surface of the color filters 1 and 10 (the surface on which the colored portions 4 and 14 and the like are not provided) and the back surface of the electrode substrates 21 and 31 (the surfaces on which the TFTs 21a and 31a and the like are not provided) are formed on a polyvinyl alcohol film. A polarizing film (not shown) made of a known polarizing material such as a material obtained by adsorbing and orienting an anisotropic material such as an iodine complex having dichroism is provided.

The IPS liquid crystal display devices 20 and 30 having the above-described configuration are provided with an ultra-micro hardness measuring device (product name: FISCHERSCOPE H100V, Fisher Instrument Co., Ltd.) on top of the columnar convex portions 8 and 18 of the color filters 1 and 10. When a load is applied in a direction perpendicular to the transparent substrates 2 and 12 at a constant load speed up to 200 mN in 9 seconds and is held as it is for 5 seconds, Since the amount of displacement D ₁ , D ₁₀ in the vertical direction with respect to the transparent substrates 2, 12 at the position of the top of 18 is the color filter ₁ , _{10 which} is 0.45 μm or more, it is used during transportation Occurrence of display unevenness due to vibration or impact can be suppressed. Moreover, since the thickness T _OC of the transparent protective layers 6 and 16 above the columnar convex portions 8 and 18 is 0.35 μm or more, it is possible to suppress the occurrence of a bright spot defect due to vibration or impact. .

  The embodiment described above is described for facilitating understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated further in detail, this invention is not limited to the following Example etc. at all.

[Production example of color filter]
(Preparation of photosensitive paint for red colored areas)
In the polymerization tank, methyl methacrylate (MMA; 63 parts by mass), acrylic acid (AA; 12 parts by mass), 2-hydroxyethyl methacrylate (HEMA; 6 parts by mass), and diethylene glycol dimethyl ether (DMDG; 88 parts by mass) ), And stirred and dissolved, 2,2′-azobis (2-methylbutyronitrile) (7 parts by mass) was added and dissolved uniformly. To the obtained solution, glycidyl methacrylate (GMA; 7 parts by mass), triethylamine (0.4 parts by mass), and hydroquinone (0.21 parts by mass) were further added and stirred at 100 ° C. for 5 hours for copolymerization. A resin solution (solid content 50%) was prepared.

  The obtained copolymer resin solution (16 parts by mass), dipentaerythritol pentaacrylate (manufactured by Sartomer, SR399; 24 parts by mass), orthocresol novolac epoxy resin (manufactured by Yuka Shell Epoxy, Epicoat 180S70; 4 parts by mass) ), 2-methyl-1- (4-methylthiophenyl) -2-monoforinopropan-1-one (4 parts by mass) and diethylene glycol dimethyl ether (52 parts by mass) are stirred and mixed at room temperature. A composition was prepared.

  The obtained curable resin composition (5 parts by mass), C.I. I Pigment Red 177 (manufactured by Dainichi Seika Kogyo Co., Ltd., Chromofine Red 6605; 10 parts by mass), polysulfonic acid type polymer dispersant (3 parts by mass), and 3-methoxybutyl acetate (82 parts by mass) in a conventional manner. By mixing, a photosensitive paint for forming a red colored portion was prepared.

(Preparation of photosensitive paint for forming green colored areas)
In the preparation of the above-mentioned photosensitive paint for forming a red colored portion, C.I. In place of I pigment red 177, C.I. A photosensitive paint for forming a green colored portion was prepared in the same manner as described above except that I Pigment Green 36 (manufactured by BASF, Heliogen Green D9360; 10 parts by mass) was used.

(Preparation of photosensitive paint for forming blue colored parts)
In the preparation of the above-mentioned photosensitive paint for forming a red colored portion, C.I. In place of I pigment red 177, C.I. A photosensitive paint for forming a blue colored portion was prepared in the same manner as described above except that I Pigment Blue 15: 6 (manufactured by DIC, Fastogen Blue EP-7; 10 parts by mass) was used.

(Preparation of photosensitive paint for light shielding part)
A black pigment (23 parts by mass), a polymer dispersant (manufactured by Big Chemie Japan, Disperbyk 111; 2 parts by mass), and diethylene glycol methyl ether (75 parts by mass) are mixed by a conventional method and sufficiently dispersed in a sand mill. A black pigment dispersion was prepared. The obtained black pigment dispersion (61 parts by mass), the curable resin composition (20 parts by mass), and diethylene glycol dimethyl ether (30 parts by mass) were mixed by a conventional method to prepare a light-shielding part photosensitive paint.

(Preparation of transparent protective layer forming composition)
First, the binder resin used for preparation of the composition for transparent protective layer formation was prepared as follows. In a 500 mL four-necked flask, 231 g of bisphenolfluorene type epoxy resin (epoxy equivalent 231), 450 mg of triethylbenzylammonium chloride, 100 mg of 2,6-di-isobutylphenol, and 72.0 g of acrylic acid are mixed and mixed. While blowing (25 mL / min), the mixture was heated at 90 to 100 ° C. to dissolve. Subsequently, the temperature of the solution was gradually increased while the solution was clouded, and the solution was heated to 120 ° C. to be completely dissolved. The solution gradually became transparent and was stirred as it was. The acid value of this solution was measured, and heating and stirring were continued until the acid value was less than 2.0 mgKOH / g. It took 8 hours for the acid value to reach the target (acid value 0.8). Then, it cooled to room temperature and obtained the colorless and transparent solid. Next, 2 kg of cellosolve acetate was added to 303 g of the bisphenol fluorene type epoxy acrylate resin obtained above to prepare a solution, and then 38 g of 1,2,3,6-tetrahydrophthalic anhydride, benzophenone tetracarboxylic dianhydride 80. 5 g and 1 g of tetraethylammonium bromide were added and mixed. The mixture was gradually warmed and reacted at 110 to 115 ° C. for 2 hours to obtain Compound A (m / n = 50/50). The acid anhydride reaction was confirmed by the disappearance of the 1780 cm ⁻¹ peak in the IR spectrum. Moreover, the inherent viscosity of the obtained compound A was 0.3 dL / g ((eta) inh = 0.3). The resulting compound A was designated as binder resin A. Binder resin A (20 parts by mass), Niper BW (polymerization initiator, main component: dibenzoyl peroxide, manufactured by NOF Corporation) (0.7 parts by mass), propylene glycol monomethyl ether acetate (79.3 parts by mass) ) Were mixed by a conventional method to prepare a composition for forming a transparent protective layer (curing temperature: 128 ° C., viscosity: 2.5 Pa · s (25 ° C.)).

[Sample 1]
As a transparent substrate, a glass substrate having a thickness of 1.1 mm (Asahi Glass Co., Ltd., AN material, 100 mm × 100 mm) is prepared. It dried and formed the light shielding part formation layer with a film thickness of 2.2 micrometers. The light shielding part forming layer is exposed to a desired light shielding part shape pattern with an ultra-high pressure mercury lamp, and then developed with a 0.05% by mass aqueous potassium hydroxide solution, and the glass substrate is left in an atmosphere of 180 ° C. for 30 minutes. By heating, a light shielding part (thickness: 2 μm) was formed.

  On the glass substrate on which the light-shielding part is formed as described above, a red colored part forming photosensitive coating is applied by spin coating, and dried in an oven at 70 ° C. for 3 minutes to form a red colored part forming layer. did. A photomask is placed at a position 100 μm away from the red colored portion forming layer, and a region corresponding to the red colored portion forming region using a 2.0 kW ultrahigh pressure mercury lamp by a proximity aligner, and a columnar laminated portion Only the region corresponding to the formation region of the red colored layer constituting the lowermost layer was irradiated with ultraviolet rays for 10 seconds. After the irradiation, the film was immersed in a 0.05% by mass aqueous potassium hydroxide solution (liquid temperature: 23 ° C.) for 1 minute for alkali development to remove only the uncured portion of the red colored portion forming layer. Thereafter, the glass substrate was heated by being left in an atmosphere of 180 ° C. for 30 minutes. Thereby, a red colored portion (thickness: 2.8 μm) is formed at a predetermined position of the opening, and a red colored layer (thickness: 2.5 μm) constituting the lowermost layer of the columnar laminated portion at a predetermined position on the light shielding portion. , Upper bottom diameter: 70 μm).

  Subsequently, on the glass substrate on which the red colored portion and the red colored layer are formed, the green colored portion forming photosensitive paint is applied by a spin coating method, and the same process as the red colored portion and the red colored layer forming step is performed. A green colored portion (thickness: 2.8 μm) was formed at a predetermined position of the opening, and a green colored layer (thickness: 1.5 μm, upper bottom diameter: 60 μm) was formed on the red colored layer on the light shielding portion. .

  Next, on the glass substrate on which the red colored portion, the red colored layer, the green colored portion, and the green colored layer are formed, a blue colored portion forming photosensitive paint is applied by a spin coating method, and the red colored portion and the red colored layer are coated. A blue colored portion (thickness: 3 μm) is formed at a predetermined position of the opening by the same process as the forming step, and the blue colored layer (thickness: 1.2 μm, upper bottom diameter) on the green colored layer on the light shielding portion. : 40 μm).

Finally, on the glass substrate on which each colored portion and each colored layer is formed, 2 mL of the transparent protective layer-forming composition is applied by a spin coating method and cured by heating for 25 minutes at a temperature rising rate of 150 ° C./min. Transparent protective layer covering each colored layer and columnar laminated portion (film thickness on colored portion: 1.5 μm, thickness T _{OC at} the top of the columnar convex portion: 0.41 μm, diameter of the upper bottom portion of the columnar convex portion: 29. 5 μm) was formed. Thereafter, a polyimide resin paint (manufactured by JSR, JALS-204) was applied and dried to form an alignment film (0.15 μm). In this way, a color filter was prepared (Sample 1).

[Sample 2]
The polymerization initiator in the transparent protective layer forming composition is perhexyl Z (main component: t-hexyl peroxybenzoate, manufactured by NOF Corporation, 0.7 parts by mass), and the curing temperature of the transparent protective layer forming composition is A color filter (Sample 2) was prepared in the same manner as Sample 1 except that the temperature was 147 ° C. (diameter of the upper bottom of the columnar convex portion: 20.4 μm, thickness T _OC of the transparent protective layer above the columnar convex portion: 0.39 μm).

[Sample 3]
Except for applying the transparent protective layer forming composition so that the diameter of the upper bottom portion of the blue colored layer formed on the green colored layer is 20 μm and the thickness of the transparent protective layer on the colored portion is 1.46 μm. A color filter (Sample 3) was produced in the same manner as Sample 1 (the diameter of the upper base of the columnar convex portion: 10.9 μm, the thickness T _OC of the transparent protective layer at the upper portion of the columnar convex portion: 0.35 μm).

[Sample 4]
The polymerization initiator in the composition for forming a transparent protective layer is perbutyl NHP (main component: t-butyl peroxyneoheptanoate), manufactured by Nippon Oil & Fats Co., Ltd., 0.7 parts by mass)), and the composition for forming the transparent protective layer A color filter (Sample 4) was prepared in the same manner as Sample 1 except that the curing temperature of the product was set to 100 ° C. (diameter of the upper bottom portion of the columnar convex portion: 34.7 μm, transparent protective layer above the columnar convex portion) Thickness T _OC : 0.39 μm).

[Sample 5]
A color filter (Sample 5) was prepared in the same manner as Sample 1 except that the diameter of the upper bottom portion of the blue colored layer formed on the green colored layer was 60 μm (the diameter of the upper bottom portion of the columnar convex portion: 40.2 μm). , The thickness T _OC of the transparent protective layer at the top of the columnar convex portion: 0.40 μm).

[Sample 6]
A color filter (sample 6) was prepared in the same manner as in sample 1 except that the transparent protective layer-forming composition was applied so that the film thickness of the transparent protective layer on the colored portion was 1.6 μm (columnar convex portion) The diameter of the upper bottom of the substrate is 29.8 μm, and the thickness T _OC of the transparent protective layer at the top of the columnar protrusion is 0.44 μm.

[Sample 7]
A color filter (sample 7) was produced in the same manner as sample 1 except that the transparent protective layer-forming composition was applied so that the transparent protective layer on the colored portion had a thickness of 1.65 μm (columnar convex portion) The diameter of the upper bottom part: 29.4 μm, the thickness T _OC of the transparent protective layer at the upper part of the columnar convex part: 0.49 μm).

[Sample 8]
A color filter (Sample 8) was prepared in the same manner as Sample 1 except that the transparent protective layer-forming composition was applied so that the transparent protective layer on the colored portion had a thickness of 1.15 μm (columnar convex portion) The diameter of the upper bottom of the transparent protective layer at the top of the columnar convex portion T _OC : 0.31 μm).

[Sample 9]
The polymerization initiator in the transparent protective layer forming composition is Park Mill D (main component: dicumyl peroxide, manufactured by NOF Corporation, 0.7 parts by mass), and the curing temperature of the transparent protective layer forming composition is 160 ° C. A color filter (Sample 9) was prepared in the same manner as Sample 1 except that the diameter of the upper bottom portion of the columnar convex portion was 29.9 μm, and the thickness T _OC of the transparent protective layer on the upper portion of the columnar convex portion was 0. 0. 18 μm).

[Manufacturing example of liquid crystal display device]
After the glass substrate is cleaned by a conventional method, a thin film transistor (TFT) is formed as a driving element at a plurality of predetermined locations on the glass substrate, and a pixel electrode connected to the drain electrode of each TFT and a common electrode are formed of indium tin oxide ( ITO). A polyimide resin paint (manufactured by JSR, JALS-204) was applied on a transparent substrate provided with TFTs, pixel electrodes, and a common electrode, and dried to form an alignment layer, which was rubbed. Then, the color filter (samples 1 to 9) produced as described above and the electrode substrate were placed facing each other and sealed with a sealing material, and a liquid crystal was filled in the gap between them to produce a liquid crystal display device.

[Test Example 1] Load test With respect to the color filters (samples 1 to 9) obtained as described above, the amount of displacement of the top of the columnar convex portion when a predetermined load was applied was measured. Specifically, on the top of the columnar convex portion of the color filter (samples 1 to 9) using a 100 μm square planar indenter in an ultra-micro hardness measuring device (product name: FISCHERSCOPE H100V, manufactured by Fischer Instruments). When a load is applied in the vertical direction to the transparent substrate at a constant load speed of up to 200 mN in 9 seconds and the state is maintained for 5 seconds in this state, the amount of displacement of the top portion of the columnar convex portion (in the direction perpendicular to the transparent substrate) Displacement amount).
The results are shown in Table 1.

Test Example 2 Vibration Resistance Test A liquid crystal display device manufactured using the color filters (samples 1 to 9) obtained as described above was vibrated for 120 minutes at an acceleration of 50 Hz and 1.5 G in the XYZ axes. Then, the backlight was turned on to display white, and the appearance of the liquid crystal display device (display unevenness and presence of defective bright spots) was visually confirmed.
The results are shown in Table 1. In Table 1, a case where display unevenness and a bright spot failure were not confirmed is indicated by “◯”, and a case where display unevenness and a bright spot failure were confirmed is indicated by “x”.

As shown in Table 1, if the amount of displacement (D ₁ , D ₁₀ ) at the top of the columnar convex portion when a predetermined load is applied is 0.45 μm or more, display unevenness due to vibration or impact occurs. (Samples 1 to 3, 6 to 9) were confirmed to be suppressed. Then, by the diameter of the upper base portion of the columnar convex portions 30μm or less, it has been found capable of an amount of this displacement (D _1, D ₁₀₎ above 0.45 [mu] m.

Further, it was confirmed that when the thickness T _OC of the transparent protective layer at the upper part of the columnar convex portion is 0.35 μm or more, it is possible to suppress the occurrence of defective bright spots due to vibration or the like (Samples 1 to 7). In the liquid crystal display device (samples 8 and 9) where the bright spot defect has occurred, the transparent protective layer and the alignment film are chipped off due to vibration or the like because the thickness T _OC is less than 0.35 μm, At the same time, the colored layer constituting the columnar laminated part was also dropped, and it was confirmed that the fragments containing the colored layer caused the bright spot defect.

  This is useful in the production of color filters used in liquid crystal display devices and in the production of liquid crystal display devices.

1,10 ... color filter 2, 12 ... transparent substrate 3,13 ... shielding portion 4,14 ... colored section 4R, 14R _d, 14R _h ... red-colored portion 4G, 14G _d, 14G _h ... green colored portion 4B, 14B ... Blue colored portion 5 ... columnar laminated portion 15 ... columnar protrusion 5R ... red colored layer 5G ... green colored layer 5B, 15B ... blue colored layer 6, 16 ... transparent protective layer 8, 18 ... columnar convex portion 19a ... non-display region 19b ... Indicated Area

Claims (11)

A transparent substrate;
A light-shielding portion formed in a predetermined pattern having an opening on one surface of the transparent substrate;
A plurality of colored portions provided in the opening;
A columnar laminated portion in which a colored layer made of each material constituting a colored portion of two or more colors of the plurality of colors is laminated in a columnar shape on the light shielding portion,
A transparent protective layer made of a transparent resin, covering at least the colored part and the columnar laminated part;
An alignment film provided so as to cover the transparent protective layer,
A columnar convex portion is constituted by the columnar laminated portion, and the transparent protective layer covering the periphery of the columnar laminated portion and the alignment film,
When a load is applied to the top of the columnar convex portion in a direction perpendicular to the transparent substrate up to 200 mN in 9 seconds and held for 5 seconds in the state as it is, the position of the top before and after the load is relative to the transparent substrate. A color filter having a displacement amount in the vertical direction of 0.45 μm or more.   The color filter according to claim 1, wherein the size of the upper bottom portion of the columnar convex portion is 30 μm or less.   The color filter according to claim 1 or 2, wherein a size of an upper bottom portion of the columnar convex portion is 5 to 25 µm. The size of the upper bottom part of the colored layer located in the uppermost layer of the columnar laminated part is 5 to 40 μm,
The ratio of the size of the upper bottom portion of the colored layer located in the uppermost layer of the columnar laminated portion to the size of the upper bottom portion of the colored layer located in the lowermost layer of the columnar laminated portion is 1: 1.5-20. The color filter according to any one of claims 1 to 3.   The color filter according to any one of claims 1 to 4, wherein a thickness of the transparent protective layer in an upper portion of the columnar laminated portion is 0.35 µm or more. A transparent substrate;
A light shielding portion provided on one surface of the transparent substrate and formed in a predetermined pattern having an opening;
A plurality of colored portions provided in the opening;
Columnar protrusions made of a material constituting the colored portion of one of the plurality of colors, or colored layers made of materials constituting two or more colored portions of the plurality of colors, provided on the light shielding portion. A columnar laminated part formed by laminating in a columnar shape,
A transparent protective layer made of a transparent resin that covers at least the colored portion and the columnar protrusion or the columnar laminated portion; and
An alignment film provided so as to cover the transparent protective layer,
The light-shielding portion is configured by laminating two or more of the colored portions of the plurality of colors.
The columnar protrusion or the columnar laminated portion is configured by a color different from the colored portion laminated as the light shielding portion,
The columnar protrusion is constituted by the columnar protrusion and the transparent protective layer and the alignment film covering the periphery of the columnar protrusion, or the columnar stacked portion and the transparent protective layer and the alignment film covering the periphery of the columnar stacked portion. And
When a load is applied to the top of the columnar convex portion in a direction perpendicular to the transparent substrate up to 200 mN in 9 seconds and held for 5 seconds in the state as it is, the position of the top before and after the load is relative to the transparent substrate. A color filter having a displacement amount in the vertical direction of 0.45 μm or more.   The color filter according to claim 6, wherein the size of the upper bottom portion of the columnar convex portion is 30 μm or less.   The color filter according to claim 6 or 7, wherein a size of an upper bottom portion of the columnar convex portion is 5 to 25 µm. The size of the upper bottom part of the colored layer located in the uppermost layer of the columnar laminated part is 5 to 40 μm,
The ratio of the size of the upper bottom portion of the colored layer located in the uppermost layer of the columnar laminated portion to the size of the upper bottom portion of the colored layer located in the lowermost layer of the columnar laminated portion is 1: 1.5-20. The color filter according to any one of claims 6 to 8.   10. The color filter according to claim 6, wherein a thickness of the transparent protective layer at an upper portion of the columnar protrusion or the columnar stacked portion is 0.35 μm or more. The color filter according to any one of claims 1 to 10,
An electrode substrate disposed opposite to the color filter;
A liquid crystal display device comprising: a liquid crystal layer made of a liquid crystal material sealed in a gap formed by the color filter and the electrode substrate.

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