JP4147209B2 - Color filter for MVA mode and method for manufacturing the same - Google Patents

Description

  The present invention relates to an MVA mode color filter used in an MVA mode liquid crystal display device and a method of manufacturing the same.

  In recent years, a liquid crystal display (LCD) has attracted attention as a flat display. Due to its thinness, light weight, small power consumption, and flickerless characteristics, the market has been rapidly expanding mainly in notebook type personal computers (PC). Recently, there has been a demand for larger desktop monitors as part of PC displays. Furthermore, LCDs have come to be used not only for PCs but also for TVs where CRT has been the mainstream.

  In the large LCD as described above, uniform brightness, contrast, etc. are required over the entire screen regardless of the viewing angle. However, in the twisted alignment mode (TN-LCD) that has been widely used in the past, the narrow viewing angle has been a big problem. Thus, in recent years, many viewing angle improvement modes such as an In Plane Switching mode (IPS mode) and an optical compensation TN mode have been developed.

  One of such viewing angle improvement modes, the multi-alignment vertical alignment mode, that is, the multi-domain vertical alignment mode (MVA mode) is (1) wide viewing angle, (2) high contrast, and (3) high speed. Currently, it is attracting widespread attention because of its superior response. In particular, the contrast characteristic can be up to about 500: 1, which is remarkably higher quality than other modes. Recently, not only large-sized LCDs as described above but also LCDs for mobile devices such as mobile phones and digital cameras are being adopted.

  Here, a general color filter used in the MVA mode includes, for example, as shown in FIG. 4, a base material 1, a pixel portion 2 formed on the base material 1, and a peripheral region of the pixel portion 2. The frame shading portion 6 formed on the transparent electrode layer 3 formed so as to cover the pixel portion 2, and the liquid crystal alignment control protrusion formed on the transparent electrode layer 3 for controlling the alignment of the liquid crystal. A structure having a member 5 is provided. Such an MVA mode color filter 7 is, for example, a liquid crystal having a substrate 11, a counter electrode layer 12 formed on the substrate 11, and a liquid crystal alignment controller 5 ′ formed on the counter electrode layer 12. The liquid crystal 10 is sealed between the MVA mode color filter 7 and the liquid crystal drive side substrate 13 so as to be a liquid crystal display device. In this liquid crystal display device, when a voltage is applied from the liquid crystal drive side substrate 13 side, the liquid crystal molecules 10 in the vicinity of the liquid crystal alignment control protrusions (5 and 5 ') begin to tilt, and the liquid crystal molecules in the other regions. 10 also has the same alignment sequentially in accordance with the direction of the slope of the liquid crystal alignment control projection. Thereby, the inclination direction of the liquid crystal molecules 10 can be adjusted, and a liquid crystal display device having an excellent viewing angle can be obtained.

  However, in such an MVA mode color filter, when a transparent electrode layer is laminated on the frame light shielding portion, when the MVA mode color filter is used in a liquid crystal display device, the sealant and the transparent electrode layer are used. In some cases, peeling occurs, or cracks occur in the transparent electrode layer when the sealing material is pressure-bonded.

  Further, when the frame light shielding part is exposed, the lines of electric force are distorted due to the difference in relative dielectric constant between the frame light shielding part and the liquid crystal alignment control projection-shaped member, which may cause display defects such as image sticking. There was a problem of becoming.

  From the above, it is hoped to provide a high-quality color filter that has little distortion of electric lines of force when the color filter is used for liquid crystal display, and that does not cause peeling of the sealing material or cracks in the transparent electrode layer. It is rare.

  The present invention includes a base material, a pixel portion formed on the base material, a transparent electrode layer formed so as to cover the base material and the pixel portion, and the transparent electrode in a region outside the pixel portion. An MVA mode color filter having a peripheral member formed on a layer and a liquid crystal alignment control protrusion formed on the transparent electrode layer laminated with the pixel portion, the peripheral member; The liquid crystal alignment control projection-like member is formed of a material having substantially the same relative dielectric constant. An MVA mode color filter is provided.

  According to the present invention, since the material for forming the peripheral member and the material for forming the alignment control projection-shaped member have substantially the same relative dielectric constant, the MVA mode color filter is liquid crystal. In the case of a display device, a line of electric force due to a voltage applied from an opposing substrate is hardly distorted, and a high-quality color filter free from burn-in can be obtained. Moreover, since the said peripheral member is formed on the said transparent electrode layer, a transparent electrode layer can be protected by this peripheral member, and a crack etc. shall not arise in a transparent electrode layer Can do. Furthermore, when the MVA mode color filter is used in a liquid crystal display device, the adhesiveness with a sealing material or the like formed on the MVA mode color filter can be improved.

  In the said invention, it is preferable that the said peripheral member has light-shielding property. This is because the peripheral member can be used as a frame light shielding portion.

  Moreover, in the said invention, it is preferable that the said peripheral member and the said protrusion member for liquid crystal orientation control are formed with the same material. This is because the peripheral member and the liquid crystal alignment control projection-like member can be formed at the same time, which is preferable from the standpoint of manufacturing cost.

  The present invention also provides a pixel portion forming step for forming a pixel portion on a base material, a transparent electrode layer forming step for forming a transparent electrode layer so as to cover the base material and the pixel portion, and an outer side of the pixel portion. A peripheral member forming step for forming a peripheral member on the transparent electrode layer in the region of the liquid crystal, and a liquid crystal alignment control protrusion for forming a liquid crystal alignment control protrusion on the transparent electrode layer laminated with the pixel portion. A method for producing a color filter for MVA mode, comprising: a step of forming a member.

  According to the present invention, since the peripheral member formed by the peripheral member forming step has a light shielding property, it is not necessary to separately form a frame light shielding portion or the like, and the MVA can be efficiently performed. A mode color filter can be manufactured.

  In the said invention, it is preferable to perform the said peripheral member formation process and the said liquid-crystal orientation control protrusion-shaped member formation process simultaneously. This is because the MVA mode color filter can be manufactured more efficiently.

  According to the present invention, when this MVA mode color filter is a liquid crystal display device, the electric lines of force due to the voltage applied from the opposite liquid crystal driving side substrate are less distorted, and there is no burn-in or the like, and the high quality It can be a color filter. In addition, the transparent electrode layer can be free from cracks and the like. Further, when the MVA mode color filter is used in a liquid crystal display device, a sealing material formed on the MVA mode color filter, etc. Adhesiveness can also be made favorable.

  The present invention relates to an MVA mode color filter used in an MVA mode liquid crystal display device and a method of manufacturing the same. Each will be described in detail below.

A. First, the MVA mode color filter of the present invention will be described. The color filter for MVA mode of the present invention includes a base material, a pixel portion formed on the base material, a transparent electrode layer formed so as to cover the base material and the pixel portion, and an outer side of the pixel portion. A color filter for an MVA mode having a peripheral member formed on the transparent electrode layer in the region and a projecting member for liquid crystal alignment control formed on the transparent electrode layer laminated with the pixel portion, The peripheral member and the protrusion member for controlling liquid crystal alignment are formed of a material having substantially the same relative dielectric constant.

  The MVA mode color filter of the present invention is formed so as to cover the base material 1, the pixel portion 2 formed on the base material 1, and the base material 1 and the pixel portion 2, for example, as shown in FIG. 1. Transparent electrode layer 3, peripheral member 4 formed on transparent electrode layer 3 in the outer region of pixel portion 2, and liquid crystal alignment control protrusion formed on transparent electrode layer 3 on pixel portion 2 It has a member 5, and the relative dielectric constant of the material forming the peripheral member 4 and the material forming the liquid crystal alignment control projection-shaped member 5 are substantially the same.

  According to the present invention, the color filter and the liquid crystal drive side substrate are opposed to each other to form a liquid crystal display device, and when a voltage is applied from the liquid crystal drive side substrate, the material for forming the peripheral member, and the liquid crystal alignment control protrusion member Since the relative dielectric constant of the material forming the material is substantially the same, the electric lines of force are less likely to be disturbed. Therefore, it is possible to obtain a high-quality color filter that does not cause burn-in or the like due to the disturbance of the lines of electric force.

  Further, in a general liquid crystal display device, when a color filter and a liquid crystal driving side substrate are bonded to form a liquid crystal display device, a transparent electrode layer is exposed in a region outside the pixel portion of the color filter, Adhesion with the sealing material formed on the transparent electrode layer is low, and peeling may occur at this portion, or when the sealing material is crimped, the pressure may cause cracks in the transparent electrode layer. It was.

However, in the present invention, since the peripheral member covers the transparent electrode layer formed in the region outside the pixel portion, when the sealing material is formed in this region, the adhesion should be good. It is possible to prevent the sealing material from peeling off. Furthermore, when the sealing material is pressure-bonded, the peripheral member protects the transparent electrode layer, so that the transparent electrode layer can be prevented from cracking, and a high-quality liquid crystal display device can be formed. It can be done.
Hereinafter, each configuration of the color filter for MVA mode of the present invention will be described.

1. Peripheral member First, the peripheral member used in the color filter for the MVA mode of the present invention is formed on a transparent electrode layer formed in a region outside the pixel portion to be described later. It is made of a material having substantially the same relative dielectric constant as that of the control projection-like member. In the present invention, “having substantially the same relative dielectric constant” means that the relative dielectric constant of the material forming the peripheral member is 1 when the relative dielectric constant of the material forming the liquid crystal alignment control projection member is 1. It is assumed that the rate is in the range of 0.01 to 100. This is because, within such a range, it is possible to prevent the lines of electric force from being disturbed due to the difference in relative dielectric constant from the liquid crystal alignment control projection-like member described later. The relative dielectric constant is determined by, for example, forming a coating film using the above-mentioned material on the entire surface of a glass substrate on which an aluminum film is deposited, and depositing gold on a part of the surface of the coating film to form an electrode. The value obtained by measuring the relative dielectric constant between the aluminum film and the gold electrode.

  Further, the peripheral member used in the present invention is formed outside the pixel portion described later, that is, on the outer peripheral portion of the color filter.

  The peripheral member may be transparent or may have a light shielding property, but in the present invention, it is particularly preferable to have a light shielding property. This is because the peripheral member can also be used as the frame light-shielding portion, and it is not necessary to separately form the frame light-shielding portion.

  When the peripheral member does not have a light shielding property, for example, as shown in FIG. 2, a frame light shielding portion 6 is formed outside the pixel portion 2 and is transparent so as to cover the pixel portion 2 and the frame light shielding portion 6. The peripheral member 4 may be formed on a region where the electrode layer 3 is formed and the frame light shielding portion 6 and the transparent electrode layer 3 are laminated.

  In the present invention, when the peripheral member has a light-shielding property and a frame light-shielding portion is not separately formed, the film thickness of the peripheral member is within a range of 0.1 μm to 20 μm, and particularly within a range of 0.5 μm to 10 μm. It is preferable to be within. This is because the peripheral member can serve as a frame light shielding portion.

  In addition to the peripheral member, when a frame shading part is separately formed, it is preferable that the film thickness of the peripheral member be in the range of 0.1 μm to 20 μm, and more preferably in the range of 0.5 μm to 10 μm. . This is because cracks and the like can be prevented from occurring in the transparent electrode layer laminated with the peripheral member.

  Here, in the present invention, if the material forming the peripheral member can have substantially the same dielectric constant as the material forming the projection member for controlling liquid crystal alignment described later, the liquid crystal alignment control is performed. However, in the present invention, it is preferable that the peripheral member and the liquid crystal alignment control projection member are formed of the same material at the same time. This is because the color filter can be manufactured efficiently and can be preferable from the viewpoint of manufacturing cost and the like.

  Such a peripheral member can be formed by a photolithography method using a general photosensitive resin, and a coloring material can be contained in the photosensitive resin as necessary. The photosensitive resin may be a negative type or a positive type, and may belong to any of a photocrosslinking type, a photo-modified type, a photopolymerization type, a photodecomposition type, and the like.

  Examples of the photocrosslinking photosensitive resin used in the present invention include a photodimerization type photosensitive resin and a photosensitive resin having a diazo group and an azide group as photosensitive groups. Examples of the photo-modified photosensitive resin include azide / novolak type, orthonaphthoquinone / novolak type, poly (p-formyloxystyrene) type, o-nitrobenzyl cholate / poly (methyl methacrylate-). Methacrylic acid) copolymer system, dihydropyridine system, N-substituted maleimide / styrene copolymer system, and the like. Examples of the photopolymerization type photosensitive resin include a radical polymerization type such as an epoxy type and an acrylic type, and a photocationic polymerization type. Examples of the photodecomposition type photosensitive resin include polymethyl methacrylate, And methyl isopropenyl ketone.

  The color material used in the present invention may be selected from inorganic or organic pigments and dyes so that the color of the peripheral member is the same as the color of the pixel portion. In particular, a black color material is preferably used. As described above, when the peripheral member is black, the peripheral member can have a light shielding property, and the peripheral member can be used as a frame light shielding portion. Examples of such black color materials include carbon black, bone black, graphite, iron black, aniline black, cyanine black, and titanium black. These color materials may be used alone or in combination. Can do.

  As described above, it is preferable that the peripheral member and the liquid crystal alignment control protrusion member described later are simultaneously formed using the same member. In this case, the liquid crystal alignment control protrusion member and the peripheral member are formed at the same time. If the film thickness is different from the member, adjust the light transmission amount, opening shape, opening area, etc. of the opening of the photomask used for exposure to control the peripheral member and liquid crystal alignment of the desired shape. Protruding members can be formed.

2. Next, the liquid crystal alignment control protrusion member used in the present invention will be described. The liquid crystal alignment control protrusion member used in the present invention is formed on a region where a pixel portion and a transparent electrode layer, which will be described later, are laminated, and is substantially the same as the material forming the peripheral member. It is formed of a material having a relative dielectric constant of

  Further, in the present invention, the liquid crystal alignment control projection-shaped member can align the liquid crystal disposed on the color filter in a target direction when the color filter is used in a liquid crystal display device. If so, the shape, the number of formed members, and the like are not particularly limited, and can be the same as the liquid crystal alignment control protruding member formed in a general MVA mode color filter. Examples of the shape of the liquid crystal alignment control protrusion-shaped member include hemisphere, partial sphere, cone, pyramid, truncated cone, and truncated pyramid.

  At this time, the height of the liquid crystal alignment control projection-shaped member is usually about 0.1 μm to 10 μm, and more preferably about 0.5 μm to 5 μm. At this time, the width is about 1 μm to 100 μm, especially about 3 μm to 40 μm.

  In the present invention, the shape of the liquid crystal control projection member may be a stripe shape, a zigzag line shape, or the like. In this case, the cross-sectional shape of the liquid crystal control projection-shaped member may be, for example, a semicircle, a trapezoid, a triangle, or the like. In this case, the height of the liquid crystal alignment control projection-shaped member is usually about 0.1 μm to 10 μm, and more preferably about 0.5 μm to 5 μm. At this time, the width is about 1 μm to 100 μm, especially about 3 μm to 40 μm.

  In addition, since the said liquid crystal orientation control protrusion-shaped member can be formed by the same method with the material similar to the peripheral member mentioned above, detailed description here is abbreviate | omitted. Further, as described above, the liquid crystal alignment control projection-shaped member and the peripheral member may be formed using different materials, but in particular, may be formed of the same material. preferable. This is because the peripheral member and the liquid crystal alignment control projection-like member can be formed simultaneously, which is preferable in terms of manufacturing efficiency.

3. Pixel Unit Next, the pixel unit used in the present invention will be described. The pixel portion used in the present invention can be the same as the pixel portion in a general color filter, and is usually formed with three colors of red (R), green (G), and blue (B). The shape of the coloring pattern in the pixel portion can be a known arrangement such as a stripe type, a mosaic type, a triangle type, or a four-pixel arrangement type, and the coloring area can be arbitrarily set.

  In the present invention, such a pixel portion can be formed by a known method such as a pigment dispersion method, a dyeing method, an electrodeposition method, a printing method, or a transfer method. In this case, one color may be formed, or a plurality of colors may be formed at the same time. The pixel portion used in the present invention may be a transmissive pixel portion or a reflective pixel portion, or a so-called transflective pixel having both a transmissive pixel portion and a reflective pixel portion. Part. The film thickness of each pixel in the pixel portion can be appropriately selected depending on the type of the target color filter, but can be generally in the range of 0.1 to 5.0 μm.

  Note that the pixel portion used in the present invention can be formed by a material, a forming method, or the like used for a pixel portion of a known color filter, and thus detailed description thereof is omitted here.

  Further, in the present invention, it is preferable from the standpoint of manufacturing efficiency that the light shielding portion is not formed in the pixel portion. In a general MVA mode color filter, a frame light-shielding portion and a light-shielding portion in a pixel portion are formed simultaneously.In the present invention, as described above, when the peripheral member has a light-shielding property, Since the peripheral member can be used as the frame-shaped light shielding portion, it is not necessary to form the frame light-shielding portion. Therefore, when the light shielding portion is not formed in the pixel portion, a process for forming the light shielding portion can be omitted, which is preferable in terms of manufacturing efficiency.

  In addition, as a light shielding part when a light shielding part is formed in a pixel part, a metal light shielding part or a resin light shielding part may be used. In the case of a light shielding part made of metal, for example, a chromium compound such as metal chromium, chromium oxide and chromium nitride, an alloy material made of nickel and tungsten, etc. can be used. It can be a laminated layer. As a method for forming such a metal light-shielding portion, a thin film of these metals or metal / metal oxide is formed on a base material described later by vapor deposition or sputtering, and a photosensitive resin is formed thereon. After the coating film is formed, the photosensitive resin film is exposed and developed using a photomask having a target pattern to form a resist image. Thereafter, the thin film can be etched, and the film of the photosensitive resin can be removed to form a light shielding portion.

  On the other hand, when the light shielding portion is made of a resin, it can be formed in the same manner as described above by a photolithography method or the like using the same material as the photosensitive resin and the light shielding material described in the section of the peripheral member. .

4). Transparent electrode layer Next, the transparent electrode layer used in the present invention will be described. The transparent electrode layer used in the present invention can be the same as the transparent electrode layer used in a general color filter. For example, indium tin oxide (ITO), zinc oxide (ZnO), tin oxide (SnO), and the like, and alloys thereof are formed by a general film formation method such as a sputtering method, a vacuum evaporation method, a CVD method, or the like. Can be. The thickness of such a transparent electrode layer can usually be about 0.01 μm to 1 μm.

5. Next, the substrate used in the present invention will be described. The base material used in the present invention is not particularly limited as long as various members such as the pixel portion can be formed on the base material, and the base material used for a general color filter is not limited. Materials can be used. Examples of such base materials include thermoplastic resins such as polyethylene terephthalate, polypropylene, polyethylene, polycarbonate, polymethyl methacrylate, and polysulfone, and heat such as epoxy resins, unsaturated polyester resins, and poly (meth) acrylic resins. Examples thereof include curable resins and various glasses. In the present invention, among the above, those having heat resistance are preferably used, and glass, resins having excellent heat resistance, and the like can be suitably used. Moreover, as thickness of a base material, it is about 0.05-10 mm normally, and is about 0.1-7 mm especially.

6). Next, the color filter for MVA mode of the present invention will be described. The color filter for MVA mode of the present invention is not particularly limited as long as it has the base material, the pixel portion, the transparent electrode layer, the peripheral member, and the liquid crystal alignment control projection-like member. In addition, an overcoat layer appropriately formed between the pixel portion and the transparent electrode layer, a columnar spacer formed on the transparent electrode layer, or the like may be used. In the transflective MVA color filter, a transparent resin layer may be formed on the transmissive part or the reflective part for the purpose of changing the cell gap between the transmissive part and the reflective part. Since these overcoat layers, the transparent resin layer, the columnar spacers, and the like can be the same as those used in a general MVA mode color filter, detailed description thereof is omitted here.

B. Next, a method for producing a color filter of the present invention will be described. The color filter manufacturing method of the present invention includes a pixel portion forming step of forming a pixel portion on a base material, a transparent electrode layer forming step of forming a transparent electrode layer so as to cover the base material and the pixel portion, A peripheral member forming step for forming a peripheral member on the transparent electrode layer in the region outside the pixel portion, and a liquid crystal for forming a liquid crystal alignment control protrusion on the transparent electrode layer laminated with the pixel portion. And a projecting member forming step for orientation control.

  For example, as shown in FIG. 3, the color filter manufacturing method of the present invention includes a pixel portion forming step (FIG. 3A) for forming the pixel portion 2 on the base material 1, the base material 1 and the pixel portion 2. A transparent electrode layer forming step (FIG. 3B) for forming the transparent electrode layer 3 so as to cover the peripheral member, a peripheral member forming step for forming the peripheral member 4 on the transparent electrode layer, and a liquid crystal alignment control protrusion And a projecting member forming step for liquid crystal alignment control (FIG. 3C) for forming the member 5.

  Here, in a general MVA mode color filter manufacturing method, a light shielding part forming step for forming a frame light shielding part on a substrate, a pixel part forming step for forming a pixel part, and the pixel part and the frame light shielding. A transparent electrode layer forming step of forming a transparent electrode layer so as to cover the portion, and a protruding member forming step of forming a liquid crystal alignment control protruding member on the transparent electrode layer.

  However, in the present invention, when the peripheral member has a light shielding property, the peripheral member can be used as a frame light shielding portion, and a separate step of forming the frame light shielding portion can be omitted. Therefore, the MVA mode color filter can be manufactured with high manufacturing efficiency.

Further, in the MVA mode color filter manufactured according to the present invention, since the peripheral member is formed, the MVA mode color filter and the liquid crystal driving side substrate are bonded together with a sealing material to form a liquid crystal display device. In doing so, the adhesion between the peripheral member and the sealing material can be improved, and the sealing material can be prevented from peeling off. Further, when the sealing material is pressure-bonded, in the color filter manufactured by a general manufacturing method, a force is applied to the transparent electrode layer and cracks may occur. It is protected by the member and can be made free from cracks or the like in the transparent electrode layer.
Hereinafter, each process of the color filter for MVA mode of this invention is demonstrated.

1. Pixel Part Forming Process First, the pixel part forming process of the present invention will be described. The pixel portion forming step of the present invention is not particularly limited as long as it is a step of forming a pixel portion on a base material, and is the same as the pixel portion forming step of a general MVA mode color filter. be able to. Specific examples include a pigment dispersion method, a dyeing method, an electrodeposition method, a printing method, and a transfer method. Further, the pixel portion is usually formed with three colors of red (R), green (G), and blue (B), and in this step, one color may be formed or two or more colors may be formed simultaneously. Also good.

  Note that the material of the pixel portion and the base material used in this step can be the same as those described in the section of “A. MVA mode color filter”, and thus the description thereof is omitted here.

2. Transparent electrode layer formation process Next, the transparent electrode layer formation process of this invention is demonstrated. The transparent electrode layer forming step of the present invention is a step of forming a transparent electrode layer so as to cover the substrate and the pixel portion, and is the same as the transparent electrode layer forming step in the general method for manufacturing a color filter for MVA mode. can do. Specifically, using an indium tin oxide (ITO), zinc oxide (ZnO), tin oxide (SnO), or an alloy thereof, a general film formation such as a sputtering method, a vacuum evaporation method, a CVD method, or the like. It can be done by a method. The thickness of the transparent electrode layer formed by this step can usually be about 0.01 μm to 1 μm.

  In this step, the transparent electrode layer is usually formed in a shape having a region 3 ′ formed so as to cover at least the pixel portion and a terminal 3 ″ for drawing out the electrode, for example, as shown in FIG. The peripheral member 4 is formed in a region outside the pixel portion by a peripheral member forming process described later. Here, in this step, for example, as shown in FIG. 6A, the transparent electrode layers (3 ′ and 3 ″ are formed only in a part of the region 4 ′ where the peripheral member is formed in the peripheral member forming step described later. In addition, as shown in FIG. 6B, for example, the transparent electrode layers (3 ′ and 3 ″ are formed so as to cover the entire area where the peripheral member is formed by the peripheral member forming step described later. ) May be formed.

3. Next, the peripheral member forming step in the present invention will be described. The peripheral member forming step in the present invention is a step of forming a peripheral member on the transparent electrode layer in a region outside the pixel portion. The order of performing this step and the liquid crystal alignment control protrusion-forming member forming step described later is not particularly limited. For example, after performing the liquid crystal alignment control protrusion-forming member forming step described later, this step is performed. However, in the present invention, it is particularly preferable to perform the peripheral member forming step and the liquid crystal alignment control protrusion-like member forming step simultaneously. This is because it is possible to form the peripheral member and the liquid crystal alignment control projection-shaped member with high production efficiency.

  The method is not particularly limited as long as it is a method capable of forming a peripheral member, and can be performed by, for example, a photolithography method using a photosensitive resin. Here, in the present invention, the peripheral member to be formed may not have a light shielding property, but it is particularly preferable that the peripheral member has a light shielding property. This is because the peripheral member can also function as a frame light-shielding portion, and it is not necessary to separately form the frame light-shielding portion.

  In addition, as described above, it is preferable to simultaneously perform the peripheral member forming step and a liquid crystal alignment control protruding member forming step, which will be described later. If the film thickness is different from that for the peripheral member of the desired shape and the liquid crystal alignment control by adjusting the light transmission amount, opening shape, opening area, etc. of the opening of the photomask used for exposure A protruding member can be formed.

  The material of the peripheral member used in this step, the shape of the peripheral member, and the like can be the same as those described in the above section “A. MVA mode color filter”. Detailed description is omitted.

4). Projection Member Forming Step for Controlling Liquid Crystal Alignment Next, the projection member forming step for controlling liquid crystal alignment in the present invention will be described. The liquid crystal alignment control protrusion-like member forming step in the present invention is a step of forming a liquid crystal alignment control protrusion-like member on the transparent electrode layer laminated with the pixel portion.

  The method is not particularly limited as long as it is a method capable of forming a liquid crystal alignment control protrusion-like member, and can be performed by, for example, a photolithography method using a photosensitive resin. . Further, as described above, this step is preferably performed simultaneously with the peripheral member forming step.

  The material of the liquid crystal alignment control projection member used in this step, the shape of the liquid crystal alignment control projection member, and the like are the same as those described in the above section “A. MVA mode color filter”. Therefore, the detailed explanation here is omitted.

5. Others In the present invention, if necessary, a light shielding part forming step for forming a light shielding part or a frame light shielding part between the pixels or at the outer periphery of the pixel part before or after the pixel part forming process. In addition, necessary steps such as a step of forming an overcoat layer after the pixel portion forming step and a step of forming columnar spacers may be appropriately included. Since these steps can be the same as those in a general method for manufacturing a color filter for MVA mode, detailed description thereof is omitted here.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

It is a schematic sectional drawing which shows an example of the color filter for MVA modes of this invention. It is a schematic sectional drawing which shows the other example of the color filter for MVA modes of this invention. It is process drawing which shows an example of the manufacturing method of the color filter for MVA modes of this invention. It is a schematic sectional drawing explaining the liquid crystal display device using the conventional color filter for MVA modes. It is explanatory drawing explaining the transparent electrode layer formation process in the manufacturing method of the color filter for MVA modes of this invention. It is explanatory drawing explaining the transparent electrode layer formation process in the manufacturing method of the color filter for MVA modes of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... Pixel part 3 ... Transparent electrode layer 4 ... Peripheral member 5 ... Projection-like member for liquid crystal orientation control

Claims (5)

A base material, a pixel portion formed on the base material, a transparent electrode layer formed so as to cover the base material and the pixel portion, and the transparent electrode layer in a region outside the pixel portion ; And when it is set as a liquid crystal display device, the peripheral member formed in the position in which a sealing material is formed, and the projection member for liquid crystal alignment control formed on the transparent electrode layer laminated with the pixel part An MVA mode color filter having an MVA mode, wherein the peripheral member and the liquid crystal alignment control projection-shaped member are formed of a material having substantially the same relative dielectric constant. Color filter.   The MVA mode color filter according to claim 1, wherein the peripheral member has a light shielding property.   3. The MVA mode color filter according to claim 1, wherein the peripheral member and the liquid crystal alignment control protrusion are formed of the same material. A pixel portion forming step of forming a pixel portion on a substrate;
A transparent electrode layer forming step of forming a transparent electrode layer so as to cover the substrate and the pixel portion;
A peripheral member forming step of forming a peripheral member on the transparent electrode layer in a region outside the pixel portion and a liquid crystal display device at a position where a sealing material is formed ;
A liquid crystal alignment control protrusion-shaped member forming step of forming a liquid crystal alignment control protrusion-shaped member on the transparent electrode layer laminated with the pixel portion. A method for manufacturing a color filter for MVA mode.   5. The method for producing a color filter for MVA mode according to claim 4, wherein the peripheral member forming step and the liquid crystal alignment control protrusion-like member forming step are simultaneously performed.

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