JP2019215479A - Liquid crystal display - Google Patents

Abstract

To provide a liquid crystal display including a black matrix, and when a pattern defective part is generated in the black matrix, makes leakage of light at the defective part difficult to be visually recognized.SOLUTION: A liquid crystal display 100 of the present invention comprises a color filter substrate 120 including color material patterns 122R to 122B in three colors; a pixel string is arranged in which pixels of one color of the three colors are periodically arranged; the liquid crystal display includes, between the pixel strings adjacent to each other, a lamination film in which a blue color material layer (color material pattern 122B or color material pattern 122Bs) as an upper layer is laminated on a black resin layer 123 as a lower layer along an extension direction of the pixel strings.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device including a color filter substrate on which pixels of each color are periodically arranged, and on which a light-shielding layer and a color filter are provided.

  A general liquid crystal display device includes a TFT array substrate (hereinafter, referred to as an array substrate) including TFTs (Thin Film Transistors) arranged in an array and pixel electrodes corresponding to pixels for displaying an image, and an opposing device including a color filter. The liquid crystal panel includes a liquid crystal panel provided with a liquid crystal material sandwiched between a pair of substrates (a color filter substrate; hereinafter, a CF substrate) and a backlight disposed on the back side thereof. In addition, the CF substrate includes a black matrix (Black Matrix: BM), which is a grid-like light-shielding layer, and a color filter in which color materials of each color are periodically arranged on a glass substrate.

  Conventionally, as a material of the BM, both a light shielding layer made of a metal thin film such as a chromium thin film and a resin light shielding layer in which a black pigment or the like is dispersed have been appropriately selected and used. In consideration of the effect on the surface and the environment, it is becoming common to use the latter BM (also called a resin BM) composed of a resin light-shielding layer. Further, in a horizontal electric field type liquid crystal display device, a resin BM having a high specific resistance and an insulating property is usually used because the display is easily affected by an electric field generated on the surface of the CF substrate. However, the resin BM has a lower optical density (OD value) indicating the light-shielding performance per film thickness as compared with the BM made of a metal thin film. Designed to be obtained.

  On the other hand, in recent years, liquid crystal display devices have been used in a wide variety of applications. In particular, those used in places where external light enters, such as outdoor applications, are visually recognized by using a transflective liquid crystal display device having a reflective pixel electrode. In many cases, the visibility is ensured or the visibility is secured by increasing the amount of light of the backlight to increase the brightness in a transmissive liquid crystal display device. Also, due to a demand for higher image quality, the amount of light of the backlight is increasing in order to increase the brightness of bright display and display an image with high contrast. For automotive applications, a head-up display type liquid crystal display device that projects an image through a liquid crystal panel onto a windshield has also become widely used. Light (projection light) is applied to the liquid crystal panel. In particular, when the amount of light from the backlight increases, the light blocking performance required for the BM also increases.

  In addition, with the recent trend toward higher image quality of liquid crystal display devices, there has been a demand for higher definition and higher aperture ratio (reducing the ratio of light-shielding portions) at the same time. In addition, in the head-up display type liquid crystal display device described above, it is necessary to display an image with a predetermined definition on a relatively small liquid crystal panel. Is required. As a result, it is necessary to design the BM pattern width as narrow as possible. On the other hand, the pattern formation of the resin BM is performed by using the resin constituting the resin BM as a photosensitive resin (photoresist) using a photolithography technique (photoengraving technique). However, problems such as disappearance, dropout, and peeling of the pattern occurred, and the lower limit of the pattern width that could be formed was limited. Therefore, in a high-definition liquid crystal display device, the pattern width of the BM relative to the pixel size becomes large, and the opening of the BM becomes narrow. As a result, the pixel aperture ratio corresponding to the area excluding the occupied area of the BM pattern, which is a light-shielding region, with respect to the pixel area decreases, and the transmittance of the liquid crystal panel proportional to the pixel aperture ratio also decreases.

  In such a situation, as disclosed in Patent Literature 1, the present inventors relate to the case where a BM made of a metal thin film such as a chromium thin film is used instead of the case of the resin BM described above. In order to take measures against reflected light on the surface of the BM, an application for a configuration in which color material layers are arranged on the BM has been filed, and some of the configurations that are advantageous for light shielding performance and high definition required for the BM is suggesting. Further, in Patent Document 2, a colored resin layer (for example, a statement to shield light other than a specific wavelength range such as red, blue, and green) on a glass substrate, and a black resin layer on the colored resin layer Disclosed is a CF substrate including a BM having a two-layer structure provided by laminating (resin BM), and a coloring layer (color material layer) in each pixel partitioned by the BM having the two-layer structure as a boundary. By adopting this configuration, a CF substrate having high dimensional accuracy and excellent light-shielding properties is shielded by a colored resin layer provided below the resin BM for light in a wavelength range that is not completely shielded by one layer of the resin BM. It is described that it can be obtained.

JP 2015-75520 A JP-A-8-146410

  However, first, Patent Literature 1 proposed by the inventors of the present application solves the problem relating to the BM made of a metal thin film such as a chromium thin film, but does not disclose the problem relating to the resin BM and the means for solving the problem. . Furthermore, as described above, it is becoming difficult to use BM made of a metal thin film such as a chromium thin film, which is a basic technology of the present application, from the viewpoint of environmental regulations in the future. Is also expensive. Subsequently, in Patent Document 2, a colored resin layer is disposed on a glass substrate side that is a side on which display is viewed in a liquid crystal panel, and corresponds to a transmission wavelength range of the colored resin layer when the liquid crystal panel is viewed. Colors may be visible. That is, there is a concern that the displayed image or display surface may appear to be colored in a specific color. In addition, there is no particular description about reducing the pattern width of the BM, and furthermore, the colored resin layer constituting the BM is optional, so that the pattern width of the BM configuration of the two-layer structure is reduced. When the black resin layer (resin BM) disposed on the surface layer side of the CF substrate loses, falls off, peels off, or the like, light leakage occurs in the portion, and there is a concern that the portion does not function as a BM. . Further, when forming a BM having a two-layer structure, it is necessary to add a coating forming process of a film of a colored resin layer and a pattern forming process by photolithography which are unnecessary when forming a normal resin BM. The number of processes increases, and the manufacturing cost increases accordingly.

  The present invention has been made to solve the problems as described above, and an object of the present invention is to provide a backlight having a high brightness while suppressing an increase in manufacturing cost or without particularly adversely affecting display. To provide a liquid crystal display device capable of reducing the pattern width of the resin BM or increasing the light shielding property of the resin BM so as to be suitable for high resolution, high definition of pixels, high aperture ratio, and the like. It is.

  The liquid crystal display device of the present invention includes pixels of three or more colors including red, green, and blue, and includes an array substrate including switching elements and pixel electrodes provided in an array, A color filter substrate including a color filter in which a color material layer is disposed and a black matrix made of a black resin layer that shields light between pixels; and a liquid crystal layer held between an array substrate and the color filter substrate. The pixels of each color are arranged such that a pixel column in which one color of each of the colors is arranged in each column is periodically arranged, and the extending direction of the pixel column is between the adjacent pixel columns. And a laminated film formed by laminating a black resin layer as a lower layer and a blue color material layer on the lower layer.

  In a liquid crystal display device provided with a black matrix, when a pattern defect such as disappearance, dropout, or peeling occurs in the black matrix, light leakage at the pattern defect can be made less visible.

FIG. 2 is a sectional view of a liquid crystal panel in the liquid crystal display device according to the first embodiment of the present invention. FIG. 2 is a plan view of a liquid crystal panel in the liquid crystal display device according to the first embodiment of the present invention. FIG. 2 is a plan view of a main part of a color filter substrate in the liquid crystal display device according to the first embodiment of the present invention. FIG. 2 is a plan view of a main part of a color filter substrate in the liquid crystal display device according to the first embodiment of the present invention. FIG. 2 is a plan view of a main part of an array substrate in the liquid crystal display device according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view of a main part of a color filter substrate in the liquid crystal display device according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view of a principal part of the liquid crystal panel, describing a design method in the liquid crystal display device according to the first embodiment of the present invention. 5 is a flowchart showing a panel assembling step in the manufacturing process of the liquid crystal panel according to the first embodiment of the present invention. FIG. 3 is an operation explanatory diagram of the liquid crystal display device according to the first embodiment of the present invention. FIG. 9 is a plan view of a main part of a color filter substrate in a liquid crystal display device according to a modification of the first embodiment of the present invention. FIG. 7 is a cross-sectional view of a main part of a color filter substrate in a liquid crystal display device according to a second embodiment of the present invention. FIG. 13 is a cross-sectional view of a main part of a color filter substrate in a liquid crystal display device according to a third embodiment of the present invention. FIG. 15 is a cross-sectional view of a main part of a color filter substrate in a liquid crystal display device according to a fourth embodiment of the present invention. FIG. 15 is a cross-sectional view of a main part of a color filter substrate in a liquid crystal display device according to a fifth embodiment of the present invention. FIG. 19 is a cross-sectional view of a main part of a color filter substrate in a liquid crystal display device according to a modification of the fifth embodiment of the present invention.

Embodiment 1 FIG.
The configuration of the liquid crystal panel 100 used in the liquid crystal display device according to the first embodiment will be described with reference to FIGS. 1 and 2 show a cross-sectional view and a plan view, respectively, of the configuration of the entire liquid crystal panel. FIG. 1 corresponds to a cross-sectional view taken along the line AB in FIG. FIGS. 3 and 4 correspond to plan views showing the planar arrangement of a color material pattern and a black matrix light-shielding pattern provided on a color filter substrate which is a main part of the invention, and FIG. Corresponds to a plan view showing a planar arrangement of each pattern. FIG. 6 is a detailed cross-sectional view in which a part is enlarged from the cross-sectional view in FIG. 1, particularly, in which a color filter substrate near a boundary between pixels is enlarged. It corresponds to the overlapping part with the light shielding pattern.

  It should be noted that the drawings are schematic and do not reflect the exact sizes of the components shown. In particular, for the configuration arranged between the CF substrate and the array substrate, for convenience of explanation, the distance between the substrates and the length in the direction perpendicular to the substrate surface are exaggerated in comparison with the thickness of both substrates. I have. Further, omissions other than the main part of the invention and partial simplification of the configuration are appropriately performed so as not to complicate the drawings. The same applies to the following drawings. Further, in the following drawings, the same components as those described in the previous drawings are denoted by the same reference numerals, and the description thereof will be appropriately omitted.

  Here, as an example, a case in which the present invention is applied to a liquid crystal panel of an in-plane switching method using a thin film transistor (TFT) as a switching element, particularly a liquid crystal panel using an FFS (Fringe Field Switching) method will be described. Let's do it.

  As shown in FIGS. 1 and 2, the liquid crystal panel 100 is a TFT array substrate (hereinafter, also referred to as an array substrate) which is an array substrate provided with switching elements such as TFTs and pixel electrodes arranged in an array. A color filter substrate (hereinafter, also referred to as a CF substrate) 120 which is a counter substrate having a display region 200 for displaying an image, and a display region 200; Is provided so as to surround a region corresponding to the above, and a sealing material 130 for sealing a gap between the CF substrate 120 and the array substrate 110 is provided.

  In the liquid crystal display device and the liquid crystal panel 100 according to the first embodiment, pixels of each color, which is a basic unit for displaying an image, are periodically arranged so as to perform color display, and are arranged vertically and horizontally in a matrix, that is, in a matrix. To form the display area 200.

  Further, between the array substrate 110 and the CF substrate 120, as shown in FIGS. 3 and 4, a large number of columnar spacers 125 for forming and holding a gap within a predetermined fixed range between the substrates are arranged in the display area 200. (Not shown in FIGS. 1 and 2).

  Further, the liquid crystal layer 140 is sandwiched between the CF substrate 120 and the array substrate 110 at least in a region corresponding to the display region 200, which is sealed by the sealing material 130. This sealing material 130 is formed in a frame area 190 arranged outside the area corresponding to the display area 200. In the first embodiment, the thickness of the liquid crystal layer 140 is adjusted by the height of the columnar spacer 125 and the like so as to be about 3 μm as a general thickness of the FFS type liquid crystal panel. .

  The outer shapes of the array substrate 110 and the CF substrate 120 are both rectangular, and the outer shape of the array substrate 110 is larger than the outer shape of the CF substrate 120 and partially protrudes from the outer end surface of the CF substrate 120. The parts are superposed and arranged. Here, as shown in the drawing, the projecting portions of the array substrate 110 are provided on two adjacent sides of the CF substrate 120, and the projecting portions are provided on two adjacent sides of the array substrate 110.

  In the figure, a rectangular area serving as the display area 200 is surrounded by a dotted line, and is defined as a boundary with the frame area 190. The frame region 190 used here is a frame shape surrounding the display region 200 located outside the display region 200 on the array substrate 110 of the liquid crystal panel 100, on the CF substrate 120, or in a region sandwiched between the two substrates. Area, that is, all areas except the display area 200. The display area 200 is also used on the array substrate 110 of the liquid crystal panel 100, on the CF substrate 120, or on all of the areas sandwiched between the two substrates. In the present specification, the terms are all used in the same meaning.

  Subsequently, a detailed configuration of the above-described CF substrate 120 will be described. The components of the CF substrate 120 are arranged on a transparent glass substrate 121 made of general glass having a thickness of about 0.5 mm to 0.7 mm. First, in at least the display region 200 on one surface of the glass substrate 121, an alignment film (not shown) for aligning liquid crystal, and a color filter 122 provided below the alignment film and provided with color material patterns of each color are arranged. Here, it is composed of a color material pattern 122R, a color material pattern 122G, and a color material pattern 122B provided corresponding to the three primary colors, red (R), green (G), and blue (B). A black matrix (Black Matrix: a light-blocking layer) provided to block light between pixels provided with the color material patterns 122R to 122B or to block a frame region 190 disposed outside a region corresponding to the display region 200. BM) 123 and the color material patterns 122R to 122B and the surface of the BM 123 provided below the alignment film. An overcoat layer (OC layer) which is a flattening film made of a transparent resin film for flattening the surface of the CF substrate 120 by flattening the surface steps formed by the color material patterns 122R to 122B and the BM 123. 124 and the like. In addition, the thickness of the OC layer 124 is set to, for example, about 1 μm so that a step portion due to the thickness of the color material layers constituting the color material patterns 122R to 122B can be flattened to some extent.

  As the color material patterns 122R to 122B, for example, a color material layer in which a pigment or a dye is dispersed in a photosensitive resin can be selected, and selectively transmits light in a specific wavelength range such as red, green, and blue. It functions as a filter and is formed by periodically arranging the patterns of these color material layers. Here, a description will be given of an example in which pixel rows provided with patterns of three color material layers of red, green, and blue are periodically arranged. A configuration in which pixel rows provided with a pattern of four or more color material layers including at least three colors including at least three colors of red, green, and blue in which colors such as magenta or cyan are added may be periodically arranged. . Further, a configuration in which a transparent color material layer or a white pixel row in which the color material layer is omitted is periodically arranged including the pixel row may be employed. For the BM123, for example, a so-called resin BM made of a black resin layer in which a carbon-based black pigment or a titanium-based black pigment is dispersed in a photosensitive resin may be used. A so-called chromium BM having a chromium oxide film having a metal chromium thin film provided on the surface may be used. However, in the first embodiment, the chromium oxide film is formed of a resin BM in consideration of cost and environmental impact. BM123 is selected.

  Further, as shown in the cross-sectional view of FIG. 1 or the plan view of FIG. 3, in the light-shielding pattern provided particularly in the display region 200 of the BM 123, the BM serving as an opening arranged corresponding to the pixel electrode 112 of each pixel. An opening 123o is provided and is formed of a lattice-like light-shielding pattern. In other words, in other words, the lattice-shaped light shielding pattern of the BM 123 provided in the display area 200 is provided so as to overlap the area between the pixel electrodes 112.

  Further, as for the patterns of the respective color material layers of the color material patterns 122R to 122B described above, a pixel column of each color in which pixels of the same color are arranged along the Y direction in the drawing (specifically, a red ( R), a green (G) pixel column, and a blue (B) pixel column) in a region covering at least the BM opening 123o along the Y direction shown in the drawing. Is provided. Further, as shown in the plan view of FIG. 3, the pattern of the blue color material layer includes a red color material pattern in addition to a color material pattern 122 </ b> B provided at least in a region corresponding to the blue pixel column and covering the BM opening 123 o. A color material pattern 122Bs composed of a blue color material layer also extends between the red pixel row where the color material pattern 122R is disposed and the green pixel row where the green color material pattern 122G is disposed along the Y direction. Provided.

  Note that the planar arrangement of the BM 123, the planar arrangement of the color material patterns 122R to 122B, and the overlapping relationship between the BM 123 and the color material patterns 122R to 122B or the color material pattern 122Bs are characteristic features of the present invention. Because of the configuration, the detailed description will be separately described below, and the detailed description will be omitted here.

  Although not shown, the alignment film formed on the surface of the CF substrate 120 is mainly coated with the alignment film material used as the alignment film after the formation of the columnar spacer. However, the alignment film material is applied to the surface of the columnar spacers, although it is formed in a region other than the formation portion. However, the alignment film material itself formed on the surface of the columnar spacer is relatively thin, and the surface of the columnar spacer does not have a substantial function as an alignment film subjected to alignment treatment.

  Further, the columnar spacers 125 are provided between the array substrate 110 and the CF substrate 120, but are fixedly provided on the surface on the CF substrate 120 side, particularly on the surface of the overcoat layer (OC layer) 124. . Further, the columnar spacer 125 is formed of a CF substrate in order to both prevent two defects, that is, a low swelling defect at a high temperature and a foaming defect at a low temperature, and to ensure resistance to an external impact on a display surface. With respect to the height at the surface of 120 (specifically, the height in the -Z direction in the figure), two types of columnar spacer forms, a relatively high spacer and a relatively low spacer, are used. Is preferably used in combination.

  Also, the other surface of the glass substrate 121 of the CF substrate 120, that is, the surface opposite to the surface on which the color material patterns 122R to 122B and the BM 123 are provided, is provided with a transparent conductive layer 126 for preventing static electricity which is grounded. ing. The transparent conductive layer 126 for preventing static electricity is, for example, a transparent conductive film such as an ITO (Indium Thin Oxide) film provided so as to cover at least the display region 200 of the glass substrate 121. It is provided as an element effective for preventing display failure due to charging or an external electric field. Further, on the other surface of the CF substrate 120, a polarizing plate 132 is provided outside the antistatic transparent conductive layer 126.

  Subsequently, a detailed configuration of the above-described array substrate 110 will be described. As for the array substrate 110, each component is disposed on a glass substrate 111 made of general glass having a thickness of about 0.5 mm to 0.7 mm, which is a transparent substrate, similarly to the CF substrate 120. First, the configuration will be described below in order from the configuration provided in the display area 200 of the array substrate 110. The array substrate 110 has an alignment film (not shown) for aligning liquid crystal on one surface of the glass substrate 111 in the display region 200 and a substrate surface of the array substrate 110 or the CF substrate 120 provided below the alignment film. A pixel electrode 112 and a counter electrode 113 which are a pair of electrodes for generating an electric field in a parallel direction and applying a voltage for driving the liquid crystal, and a switching element for writing a voltage to the pixel electrode 112 which is one of the pair of electrodes. There are a certain TFT 114, an insulating film 115 covering the TFT 114, a plurality of scanning signal lines (hereinafter also referred to as gate lines) 117 which are wirings for supplying signals to the TFTs 114, a video signal line (hereinafter also referred to as source lines) 118, and the like. are doing.

  An area surrounded by the gate wiring 117 and the source wiring 118 corresponds to a pixel serving as a basic unit for displaying an image. As described above, the display area 200 is formed by arranging the pixels vertically and horizontally in a matrix.

  As shown in the plan view of the array substrate 110 in FIG. 5, the TFT 114 includes a semiconductor layer 114c which is an active layer of the transistor and a gate electrode (here, one of the gate wirings 117) of the transistor provided so as to overlap the semiconductor layer 114c. And a source electrode 114s, a drain electrode 114d, and the like. The TFT 114 is electrically connected to the source wiring 118 via the source electrode 114s and to each pixel electrode 112 via the drain electrode 114d. It is connected to the.

  Further, in the first embodiment, as shown in the plan view of FIG. 5 or the cross-sectional view of FIG. A pixel electrode 112 as one electrode is formed of a flat transparent conductive film pattern provided to be connected to each TFT 114, and a counter electrode 113 as the other electrode is a region overlapping each of the pixel electrodes 112. And a transparent conductive film pattern having a slit electrode 113s1 or a slit electrode 113s2 composed of a plurality of slit-shaped openings provided in parallel with each other. It is arranged on 112 with an insulating film 115 interposed therebetween. As the transparent conductive film forming the pixel electrode 112 and the counter electrode 113, for example, an ITO film is used.

  The slit electrode 113s1 and the slit electrode 113s2 are arranged corresponding to a pair of pixels and the pixel electrode 112 adjacent to each other in the Y direction in the drawing. That is, they are arranged along the column direction which is the extending direction of the source wiring 118. More specifically, the respective longitudinal directions extend in mutually different directions (slit direction A and slit direction B, respectively). Although the figure shows a region of approximately two pixels in the Y direction, the slit electrode 113s1 extending in the slit direction A and the slit electrode 113s2 extending in the slit direction B are outside the illustrated range. In addition, in the display area 200, they are alternately arranged along the Y direction.

  That is, in the extending directions of the slit electrode 113s1 and the slit electrode 113s2, the mutually different slit directions A and B are alternately switched, and are arranged in a zigzag along the Y direction. In addition, as shown in the figure, corresponding to the arrangement of the slit electrodes 113s1 and the slit electrodes 113s2 alternately, the longitudinal direction of the pixel electrode 112 and the source wiring 118 is set to each of the slit electrode 113s1 and the slit electrode 113s2. , The pixel electrodes 112 and the source lines 118 are also arranged in a zigzag manner along the Y direction.

  Further, as shown in FIG. 5, the rubbing direction (alignment processing direction) N corresponding to the liquid crystal alignment direction is shown, and the + Y direction in the figure corresponds to the rubbing direction (alignment processing direction) N. When the processing direction) N is set as a reference (0 degree), assuming that the clockwise direction is positive, the slit electrode 113s1 extending in the slit direction A has an angle of -θ, and the slit electrode 113s2 extending in the slit direction B has an angle of + θ. It is arranged at an angle. The inclination angle θ may be set to an appropriate angle of 30 degrees or less. In the first embodiment, about 10 degrees is selected.

  Therefore, the slit electrode 113s1 and the slit electrode 113s2 are disposed approximately vertically symmetrically with respect to the gate wiring 117 disposed at a substantially central portion in FIG. 5, which is a boundary between the disposed pixels. Will be done. By adopting such a configuration, it is possible to reduce a color change due to a viewing angle (a viewing direction with respect to the panel surface), that is, a color shift phenomenon, when displaying the liquid crystal display panel. Further, in order to obtain the above-described operation, it is not always necessary that all of the individual slit electrodes 113s1 and slit electrodes 113s2 are arranged line-symmetrically. A slit electrode 113s1 inclined at an angle −θ and a slit electrode 113s2 inclined at an angle + θ with respect to a reference line, more preferably, the number and length of these two types of slits having different inclination directions are set substantially equal. By making the sums of the lengths substantially equal to each other, the color change near the slit electrode 113s1 and the color change near the slit electrode 113s2 can be canceled between two adjacent pixels. Can be obtained.

  In addition, the above-described operation can be obtained by providing the slit electrodes 113s1 and 113s2 arranged line-symmetrically with respect to the liquid crystal alignment direction. It is not necessary to adopt a configuration in which directions are different from each other in adjacent two pixel units as in the example described. In other words, within one pixel, the slit electrode 113s1 and the slit are divided into two regions, upper and lower, left and right, and arranged in line symmetry (the boundary of the region should be set to the axis of symmetry) in each region. An electrode 113s2 may be provided.

  However, in the first embodiment, since it is assumed that the present invention is applied to a head-up display type liquid crystal display device that requires a relatively high definition pixel density, even when the size of one pixel is relatively small, In order to easily provide the slit electrode 113s1 and the slit electrode 113s2 arranged in line symmetry, the slit electrode 113s1 and the slit electrode 113s2 in different directions in adjacent two pixel units are provided in separate pixels. The configuration was chosen.

  Note that a specific standard of the definition is, for example, about 300 ppi, and a specific pixel size is, for example, about 30 μm at a pixel pitch in the gate direction (X direction) and a pixel pitch in the source direction (Y direction). The pitch was set to about 90 μm. Further, the width of the source wiring 118 is set to about 4 μm, and the width of the gate wiring 117 is set to about 7 μm in accordance with the setting of the pixel pitch.

  In addition, the above-described configuration of the pixel electrode 112 and the counter electrode 113 is not essential, and the pixel electrode 112 and the counter electrode 113 which have conventionally been generally used as the lateral electric field type electrode have a comb-shaped electrode having a comb shape. Is also good. Alternatively, as another form of the FFS method, the pixel electrode 112 and the counter electrode 113 are formed by a plurality of slit-shaped openings provided in parallel on the pixel electrode 112 side by reversing the upper and lower relations of the shapes and arrangement. A pattern having a slit electrode is disposed above the counter electrode 113, the counter electrode 113 is disposed in a flat plate shape and disposed below the pixel electrode 112, and the TFT 114 is connected to the pixel electrode 112 having the above-described pattern having the slit electrode. May be applied.

  In the drawing, the insulating film 115 forming the array substrate 110 covers each insulating film and the TFT 114 that insulate the semiconductor layer 114c, the gate electrode, the source electrode 114s, the drain electrode 114d, and the like forming the TFT 114 from each other. Although an insulating film or an insulating film formed between the pixel electrode 112 and the counter electrode 113 is simply shown as an integrated insulating film, a single-layer transparent insulating film or a plurality of It is composed of a laminated film of transparent insulating films.

  As shown in FIGS. 2 and 5, the planar arrangement, connection relationship, and the like of the gate wiring 117, the source wiring 118, the TFT 114, the pixel electrode 112, and the counter electrode 113 provided on the array substrate 110 are as shown in FIGS. A plurality of 112s are provided in a matrix in the display area 200, and each is connected to the TFT 114. A plurality of gate wirings 117 and source wirings 118 are provided extending in the row direction or the column direction, respectively. In the first embodiment, when the X direction shown in the drawing is regarded as a row direction and the Y direction as a column direction, the gate wiring 117 extends in the row direction, and the source wiring 118 extends in the column direction. Will be provided. Further, a plurality of gate wirings 117 and a plurality of source wirings 118 are provided so as to cross each other.

  As described above, in the first embodiment, the slit electrode 113s1 and the slit electrode 113s2 provided in the counter electrode 113 are basically in the Y direction, that is, the column direction which is the extending direction of the source wiring 118. The slit electrodes 113s are arranged symmetrically to each other with the longitudinal direction of the slit electrodes 113s. However, as described above, the pixel electrodes 112 and the counter electrodes 113 have different lateral electric field modes. In the case of adopting a configuration in which the comb electrode has a comb shape with respect to the counter electrode 113, the longitudinal direction of the comb electrodes is arranged in the same direction as the extending direction of the slit electrodes 113s1 and 113s2. You should do it. Further, even in the case of adopting a configuration in which the pixel electrode 112 and the counter electrode 113 in another FFS mode have a pattern having a slit electrode formed of a plurality of slit-shaped openings provided in parallel on the pixel electrode 112 side. The longitudinal direction of the slit electrode provided on the pixel electrode 112 side may be arranged in the same direction as the extending direction of the slit electrode 113s1 and the slit electrode 113s2.

  Subsequently, a configuration provided in the frame region 190 of the array substrate 110 will be described. A signal terminal 116 for receiving a signal supplied to the TFT 114 from the outside is provided on a surface of the frame region 190 on the array substrate 110, particularly on a side on which the CF substrate 120 is disposed, in a protruding portion that partially protrudes from an end surface of the CF substrate 120. It has. As shown, the signal terminals 116 are provided in the frame areas 190 on the two sides of the array substrate 110, respectively, corresponding to the protruding portions provided on the two adjacent sides of the array substrate 110. One provided is for supplying a scanning signal to the gate wiring 117, and the other provided on the side in the X direction in the figure is for supplying a video signal to the source wiring 118. Although the signal terminal 116 is shown in an integrated configuration in the figure, it has a configuration in which a plurality of rectangular pads separated corresponding to a plurality of signals are arranged along the edge of the substrate in detail. I have.

  Further, a control IC (Integrated Circuit) chip for generating a control signal for controlling a driving IC via an FFC (Flexible Flat Cable) 133 serving as a connection wiring is provided for each pad of the signal terminal 116. The control board 134 is connected. In addition, a control signal from the control board 134 is input via a signal terminal 116 to an input side of a drive IC chip 135 for a source wiring 118 or a gate wiring 117 attached to a protruding portion. An output signal output from the output side is supplied to the TFT 114 in the display area 200 via a plurality of signal extraction wirings (not shown) drawn from the display area 200 and the gate wiring 117 or the source wiring 118.

  Further, the antistatic transparent conductive layer 126 formed on the surface of the CF substrate 120 is grounded. Although a detailed description of the connection structure is omitted from the drawings, here, for example, an earth pad is provided on the protruding portion of the array substrate 110, and a conductive paste or a conductive tape is provided between the antistatic transparent conductive layer 126 and the earth pad. I decided to connect. In addition, a silver paste that is a general conductive paste agent can be used as the conductive paste, and a conductive tape obtained by applying a conductive adhesive to a base material made of a metal foil such as an Al foil or a Cu foil can be used as the conductive tape. A general commercially available conductive tape can be used.

  As described above, the liquid crystal panel 100 of the first embodiment is configured. Furthermore, since the liquid crystal display device of the first embodiment constitutes a head-up display, the array substrate 110 is located on the opposite side of the liquid crystal panel 100 from the display surface formed in the display area 200 of the CF substrate 120. A backlight unit (not shown) serving as a light source for projection is provided in opposition to the substrate surface, and optical components such as condensing and diverging light from the light source are provided in the backlight unit. An optical system (not shown) such as an optical sheet and a lens for adjustment is arranged, and a liquid crystal display device according to the first embodiment is appropriately configured together with a housing (not shown) for accommodating these members.

  Next, a detailed configuration of the light shielding pattern and the color material patterns 122R to 122B or the color material patterns 122Bs of the BM 123 provided on the CF substrate 120, which are the characteristic configurations of the present invention, will be described. The planar arrangement of these patterns will be described with reference to the plan view of FIG. 3 and the plan view of FIG. 4, and the overlapping relationship of these patterns will be described with reference to the cross-sectional view of FIG. Here, FIG. 6A is a cross-sectional view showing the vicinity of a boundary between a red pixel column and a green pixel column, and FIG. 6B is a blue pixel column and a green pixel column. FIG. 2 is a cross-sectional view showing the vicinity of the boundary between the blue pixel row and the vicinity of the boundary between the blue pixel row and the red pixel row, that is, the vicinity of both side ends of the blue pixel row, respectively, on the left and right in the drawing.

  First, the planar arrangement of the light blocking pattern of the BM 123 provided on the CF substrate 120 will be described with reference to FIG. FIG. 4 is a plan view showing the planar arrangement of the light shielding pattern of the BM 123 provided on the CF substrate 120 as described above. The dotted lines indicate the positions of the TFT 114, the gate wiring 117, and the source wiring 118 provided on the arranged array substrate 110, and the slit electrodes 113s1 and 113s2 provided on the pixel electrode 112 and the counter electrode 113.

  The BM 123 according to the first embodiment has a BM opening 123o arranged corresponding to the pixel electrode 113 of each pixel as shown in FIG. It consists of a light-shielding pattern. Further, among the BMs 123 sandwiched between the BM openings 123o, the BMs 123 provided between the pixels along the Y direction are generally opposed to the source wirings 118 as indicated by dotted lines. Be placed. On the other hand, the BM 123 provided between the pixels in the X direction is generally opposed to the gate line 117 as indicated by the dotted line in the position of the gate line 117. In particular, in the first embodiment, assuming that the present invention is applied to a head-up display type liquid crystal display device, the definition is relatively high, and the pixel pitch in the gate direction (X direction) is set to about 30 μm. Therefore, in order to secure a certain aperture ratio, it is necessary to set the width of the BM 123 provided along the Y direction to be considerably narrow. Specifically, in the first embodiment, the width of the BM 123 provided along the Y direction is set to at least about 5 μm or less. Note that factors that determine the width of the BM 123 include factors other than the aperture ratio, and these factors are set. A specific method of setting the width of the BM 123 will be described separately.

  The planar arrangement of the color material patterns 122R to 122B or the color material patterns 122Bs according to the first embodiment partially overlaps with the outline described above, but as shown in FIG. Regarding the color material layer patterns of each color of the color material patterns 122R to 122B provided for each color pixel column, at least the BM opening 123o is covered in the extending direction of the pixel column, that is, along the Y direction shown in the drawing. The coloring material pattern is provided in the region and is continuous in a stripe shape. Then, from the left side to the right side in the figure, in the display area 200 including the outside of the illustrated range, they are periodically arranged so that the order of red, green, and blue is repeated.

  Further, as shown in the plan view of FIG. 3, the color material pattern 122B provided corresponding to the blue pixel column is provided in a region at least covering the BM opening 123o, as described above. Further, the color material pattern 122B is provided in the vicinity of both ends in the extending direction thereof so as to overlap with the BM 123 provided between the blue and red pixel columns or between the blue and green pixel columns along the Y direction. . In addition, as described above, the BM123 is superimposed on the BM123 provided between the red pixel row where the red color material pattern 122R is arranged and the green pixel row where the green color material pattern 122G is arranged. Similar to the color material pattern 122B, a color material pattern 122Bs composed of a blue color material layer is provided along the Y direction. The color material pattern 122Bs is provided as a separate pattern separate from the color material pattern 122B provided in the blue pixel column, and is provided so as to overlap with the BM 123 provided along the Y direction as shown in the drawing. It has a width substantially the same as that of the BM 123, and is provided along the Y direction similarly to the BM 123. Therefore, the width of the color material pattern 122Bs is also set to about 5 μm or less in accordance with the width of the BM 123.

  Further, the stacking relationship between the BM 123 and the color material patterns 122R to 122B or the color material patterns 122Bs between the pixel rows described above will be described below with reference to the cross-sectional view of FIG. First, as shown in a cross-sectional view showing the vicinity of the boundary between the red pixel row and the green pixel row in FIG. 6A, the glass substrate is located at the boundary between the red pixel row and the green pixel row. BM 123 made of a black resin layer is arranged on 121. Further, the color material pattern 122R or the color material pattern 122G disposed on both sides of the BM 123 is provided in a region at least covering the BM opening 123 provided outside the BM 123, as described with reference to the plan view of FIG. And is arranged so as to partially overlap the BM 123. That is, the color material pattern 122R or the color material pattern 122G is disposed so as to cover the end surface of the BM 123 (the surface opposite to the glass substrate 121) with respect to both end portions of the BM 123.

  Further, the above-described color material pattern 122Bs composed of a blue color material layer provided between the red and green pixel columns is provided so as to be generally stacked on an upper layer of the BM 123 in a formation region of the BM 123. In other words, between the red pixel row and the green pixel row arranged adjacent to each other, the BM 123 made of a black resin layer is used as a lower layer, and the color material pattern 122Bs made of a blue color material layer is stacked thereover. Is formed. In other words, the laminated film in which the black resin layer is the lower layer and the blue color material layer is laminated on the lower layer has at least a region provided between the red pixel column and the green pixel column. Become. Further, as described with reference to the plan view of FIG. 3, the laminated film including the BM 123 and the color material pattern 122Bs is provided along the extending direction of the red pixel column and the green pixel column.

  In addition, as shown in the figure, the color material pattern 122Bs is disposed so as to be further stacked on the color material pattern 122R and the color material pattern 122G that are provided so as to overlap on both side ends of the BM 123. Therefore, the color material pattern 122Bs is provided on the uppermost layer of the laminated film provided along the extending direction of the red pixel column and the green pixel column, that is, on the surface of the laminated film on the liquid crystal layer 140 side. . In addition, as described above, the BM 123, the color material pattern 122R, the color material pattern 122G, and the surface of the color material pattern 122Bs are covered, the surface steps formed by these are reduced, and the surface is planarized. An OC layer 124 as a film is provided.

  Next, referring to FIG. 6B, the BM 123 and the color material patterns 122R to near the boundary between the blue pixel row and the green pixel row or near the boundary between the blue pixel row and the red pixel row. The stacking relationship of 122B will be described. At both the boundary between the blue pixel line and the green pixel column shown on the left side in the drawing and the boundary between the blue pixel line and the red pixel column shown on the right side in the drawing, the BM 123 is placed on the glass substrate 121. The arrangement is the same as in FIG. Further, for the pair of BMs 123 shown on the left side and the right side in the figure, first, the color material patterns 122G and the color material patterns 122R arranged outside the pair of BMs 123 will be described with reference to the plan view of FIG. As described above, it is provided in a region that at least covers the BM opening 123 provided outside the BM 123, and is disposed so as to partially overlap the end of the BM 123. This is the same as that in FIG. 6A, the color material patterns 122R and 122G arranged on both sides of the BM 123 are arranged so as to partially overlap the ends of the BM 123.

  On the other hand, as described with reference to the plan view of FIG. 3, the color material pattern 122 </ b> B arranged between the pair of BMs 123 illustrated in FIG. In addition, the BM 123 is disposed so as to overlap with the BM 123, and is generally provided in a layer above the BM 123 in a formation region of the BM 123. In other words, between the green pixel column and the blue pixel column disposed adjacent to each other, and further between the red pixel column and the blue pixel column disposed adjacent to each other, the black resin layer BM123 as a lower layer and a layered film formed by laminating a color material pattern 122B formed of a blue color material layer on the upper layer, and a laminated film formed of the BM123 and the color material pattern 122B is The arrangement provided along the extending direction of each of the blue to blue pixel columns has the same feature as the stacked film provided between the red and green pixel columns described with reference to FIG. .

  The color material pattern 122B provided between the green and blue pixel columns or between the red and blue pixel columns is a color material pattern 122G or The color material pattern 122 </ b> R is further disposed on the upper layer. Therefore, the color material pattern 122B is provided along the extending direction of the green pixel column and the blue pixel column, or is provided along the extending direction of the green pixel column and the red pixel column. It is provided on the uppermost layer in the laminated film, that is, on the surface of the laminated film on the liquid crystal layer 140 side.

  6B, the BM 123 and the color material patterns 122R to 122B cover the surfaces of the BM 123 and the color material patterns 122B, thereby alleviating the surface steps formed by them, and planarizing the surface. The provision of the OC layer 124 which is a film is similar to the vicinity of the boundary between the red pixel row and the green pixel row described with reference to FIG.

  As described above, between the red and green pixel columns, the color material pattern 122Bs composed of the blue color material layer is disposed so as to overlap the BM 123, and between the green and blue pixel columns, or between the red and blue pixel columns. Since the color material pattern 122B made of a blue color material layer is superimposed on the BM 123 between the pixel rows, the liquid crystal side surface of the CF substrate 120 is provided between the pixel rows of different colors. , A BM123 made of a black resin layer, and a laminated film formed by laminating a blue color material layer on the BM123 are provided. This feature is a main feature of the CF substrate 120 of the first embodiment. It becomes. In the stacked film provided between the pixel columns of these different colors, the BM 123 made of a black resin layer is arranged on the side where the display on the CF substrate 120 is visually recognized, that is, on the glass substrate 121 side. In particular, it does not affect the displayed image or the appearance of the display surface. That is, the displayed image or display surface does not appear to be colored in a specific color.

  Subsequently, in the first embodiment, as described above, the width of the BM123 provided between the pixel columns of different colors and formed of a black resin layer, and the width of the blue color material layer forming the stacked film together with the BM123 is described. 7 is a cross-sectional view showing the vicinity of the boundary between the red pixel row and the green pixel row in the entire liquid crystal panel 100 including the array substrate 110 side in FIG. This will be described with reference to FIG. It should be noted that, in the drawing, components disposed outside the glass substrate 111 and the glass substrate 121 which are not directly related to the description are omitted.

  Here, as shown in FIG. 7, among the pixel columns of different colors, the width of the color material pattern 122Bs composed of a blue color material layer provided between the red and green pixel columns, the width of the BM 123, and the source wiring An example of the relationship with the width of 118 will be described. In particular, in the liquid crystal panel 100 of the first embodiment, the FFS array substrate 110 having the counter electrode 113 made of a transparent conductive film on the source wiring 118 is used. Specifically, in a region that does not overlap with the source wiring 118 formed of a metal layer serving as a light-blocking layer in a plan view, light-on / off operation due to on-off operation of the liquid crystal layer, that is, display operation can be contributed. However, in the FFS mode liquid crystal panel 100, since the viewing angle range is wide, transmitted light in an oblique direction is also visually recognized by a viewer who views a display such as an image, and affects display characteristics. In detail, in the oblique direction, particularly in the inter-pixel region, light leakage occurs regardless of the light on / off operation by the liquid crystal operation in a desired pixel unit, and the original display is performed between pixel columns of different colors. Light of a color different from the color is also visually recognized, and a phenomenon called display color called color mixing occurs.

  Therefore, in the FFS mode liquid crystal panel 100 having the above characteristics, it is necessary to design an appropriate light shielding so as to prevent color mixing, that is, to design a light shielding width by the BM 123 suitable for display characteristics. Specifically, at an angle in the oblique direction corresponding to the viewing angle range, the BM 123 prevents light traveling obliquely from at least the vicinity of the end of the source wiring 118 from passing through the color material pattern of the adjacent pixel and the BM opening 123. Set the width of

  Hereinafter, a detailed design example according to the first embodiment will be described with reference to FIG. Here, as the viewing angle range, the light transmission direction is schematically shown using two diagonal arrows in the figure, but from +45 degrees obtained by a general FFS type liquid crystal panel to -45 degrees. Let's assume a range of degrees. In the figure, arrows in oblique directions assuming the light transmission direction are shown at positions connecting both end portions of the source wiring 118 and both end portions of the BM 123. This positional relationship corresponds to the minimum necessary width of the BM 123 where color mixing does not occur in the range of +45 degrees to -45 degrees, in other words, the width that prevents color mixing in the viewing angle range.

  Here, as shown in the figure, the width of preventing the color mixture in the viewing angle range in the width of the BM 123 is set to W, the width of the source wiring 118 is set to d, and the width between the source wiring 118 and the BM 123 correlated with W and d is set. Assuming that the distance is L, when the direction of the diagonal arrow is 45 degrees, an isosceles right triangle is formed up and down at the intersection of the two diagonal arrows. , The distance between the intersection and the BM 123 corresponds to W / 2, the distance between the intersection and the source wiring 118 corresponds to d / 2, and the sum of the two corresponds to the source wiring 118 and the BM 123. It can be seen that it corresponds to the distance L between them. In other words, the relationship of W / 2 + d / 2 = L holds, and the width W of the BM 123 for preventing color mixture in the viewing angle range is the width d of the source wiring 118 and the distance between the source wiring 118 and the BM 123. If L is determined, it can be easily calculated using the formula.

  Specifically, as described above, the width d of the source wiring 118 is set to 4 μm. Further, the distance L between the source wiring 118 and the BM 123 is the sum of the thicknesses of the components arranged between them. Regarding the thickness of each component, for example, the thickness of the liquid crystal layer is about 3 μm, the thickness of the OC layer 124 formed on the CF substrate 120 is about 1 μm, and formed on the source wiring 118 on the array substrate 110. The thickness of the insulating film 115 is about 0.2 μm, and the thickness of the counter electrode 113 is about 0.1 μm. Therefore, the distance L can be estimated to be about 4.3 μm by adding all these thicknesses. On the other hand, the width W for preventing color mixing is, from the above-mentioned relationship, a relationship of W = 2L−d. If the specific values of L and d are substituted, W = 4.6 μm. It can be calculated.

  As described above, the width of the BM 123 is set to be equal to or larger than the width W for preventing color mixture in the viewing angle range calculated as described above, so that the viewing angle range is at least −45 degrees to +45 degrees. Thus, suitable display characteristics that do not cause color mixture can be obtained. When the viewing angle range in which color mixing needs to be prevented is narrower than the above-described example of the range from −45 degrees to +45 degrees, the width of preventing color mixing in the viewing angle range may be narrower. If the viewing angle range is wide, it is necessary to increase the width for preventing color mixing. Therefore, in a realistic design, the width for preventing color mixture in the viewing angle range is different depending on the product specifications and the desired viewing angle range, and furthermore, the position deviation margin between the BM 123 and the source wiring 118 is reduced. In consideration of the above, the width W may be set slightly wider than the standard width W as described above. Therefore, the width of the BM 123 may be designed by appropriately adjusting the magnitude relationship with the width W calculated as a guide in the above design example according to the product specifications, the desired viewing angle range, and the like.

  Further, as described above, the width of the BM 123 is determined using the width W for preventing color mixing as a guide, and in FIG. 7, the width of the BM 123 is set to be the same as the width W for preventing color mixing. Also, the width of the color material pattern 122Bs composed of a blue color material layer disposed on the BM 123 may be basically determined based on the width W for preventing the color mixture. For example, in FIG. As shown, the width of the color material pattern 122Bs is substantially equal to the width of the BM 123. In other words, the width of the BM 123 and the color material pattern 122Bs forming the laminated film provided between the red and green pixel columns is set to the width W for preventing the color mixture described above. Note that as described above, the width of the BM 123 may be set wider than the width W for preventing color mixing, and the width of the color material pattern 122Bs may be set wider than the width W for preventing color mixing.

<Manufacturing flow of liquid crystal display device>
As a method of manufacturing the liquid crystal display device according to the first embodiment of the present invention, a manufacturing flow of the liquid crystal display device having the liquid crystal panel 100 having the above-described configuration will be described with reference to a flowchart illustrated in FIG. Usually, a liquid crystal panel is manufactured by cutting out one or more liquid crystal panels from a mother substrate larger than the final shape (also called multi-paneling). The processes in steps S1 to S8 (up to the middle of S9) in FIG. 8 are processes in the state of the mother substrate.

  First, in the substrate preparation step, wiring and the like are formed on the mother array substrate and the mother CF substrate. That is, in the mother array substrate, a process of forming the gate wiring 117, the source wiring 118, the TFT 114, the pixel electrode 112, the counter electrode 113, and the like shown in FIG. 2 or FIG. 5 is performed. Since the method is the same as the method of manufacturing an array substrate (mother array substrate) in a liquid crystal panel, a detailed description of the manufacturing method is omitted.

  On the other hand, in the mother CF substrate, a process of forming the BM 123, the color material patterns 122R to 122B, the color material pattern 122Bs, the columnar spacer 125, and the like illustrated in FIG. 1 or FIGS. Is the same as a method for manufacturing a CF substrate (mother CF substrate) in a general liquid crystal panel, and therefore a detailed description of the manufacturing method is omitted. For example, for the BM 123, since the resin BM is selected as described above, a process of patterning and forming a black resin layer in which a black pigment or the like is dispersed in a general resin may be selected. In the case of using the BM123 made of chromium BM based on a thin film, a general process of patterning and forming a laminated film of a metal chromium film having a chromium oxide film on the surface may be selected. In addition, a color material pattern 122B and a color material pattern 122Bs composed of a blue color material layer provided on the BM 123 between adjacent pixel columns, which are characteristic features of the present invention, are also generally blue pixels. In the step of forming a color material pattern composed of a blue color material layer provided for each column, it is only necessary to change the pattern design (mask design). Therefore, it can be manufactured by using a general color material pattern patterning process using the photosensitive resin of each color, and it is possible to form at low cost without particularly changing the manufacturing process. Further, since the color material patterns 122R to 122B and the color material pattern 122Bs of the first embodiment all have a stripe-shaped continuous pattern shape, a normal stripe-shaped color material is used during this patterning process. Compared to forming a pattern, it can be manufactured without reducing the manufacturing yield.

  As described above, after preparing the mother array substrate and the mother CF substrate, first, in the substrate cleaning step of step S1, the substrate cleaning for cleaning the mother array substrate and the mother CF substrate prepared as described above is performed. Perform the process. Next, in the alignment film material application step of step S2, an alignment film material is applied to one surface of the mother array substrate and the mother CF substrate. This step includes a step of transferring and applying an alignment film material composed of an organic material by, for example, a flexographic printing method to the main surfaces of the mother array substrate and the mother CF substrate facing each other, and firing and drying with a hot plate or the like. I have.

  Next, in the alignment process of step S3, for example, a rubbing process is performed on the alignment film material as an example of the alignment process, and the alignment film material surface is aligned to form an alignment film. As described above, the orientation film formed on the surface of the substrate is relatively thin and is not particularly illustrated because it is not a main part of the present invention. In addition, the alignment process is not limited to the rubbing process, and after changing the alignment film material to an alignment film material for optical alignment, for example, a photo alignment process such as irradiating ultraviolet rays through a polarizing filter is selected. Is also good. In another embodiment described below, a photo-alignment process is selected as a particularly preferable example, and thus a detailed description will be given separately.

  Next, in the seal application step of step S4, a paste seal forming the seal material 130 is discharged from the dispenser nozzle and applied to the main surface of the mother array substrate or the mother CF substrate using a seal dispenser device. This paste-like seal is applied so as to surround the display area 200 of the liquid crystal panel 100 to form a seal pattern. Next, in the liquid crystal dropping step of step S5, a liquid crystal material is dropped into a region surrounded by the sealant 130 on the substrate on which the seal pattern is formed.

  Next, in the vacuum bonding step of step S6, the mother array substrate and the mother CF substrate are bonded in a vacuum to form a mother cell substrate. Next, in the UV (ultraviolet) irradiation step of step S7, the mother cell substrate is irradiated with ultraviolet rays, and the paste-like seal for forming the seal pattern is temporarily cured. Then, in the after-curing step of step S8, the main curing is performed by heating, and the paste-like seal is completely cured to obtain the sealing material 130 made of the cured seal.

  Next, in the cell dividing step of step S9, the mother cell substrate is cut along the scribe lines, and divided into individual liquid crystal cells. The individual liquid crystal cells divided as described above are subjected to a polarizing plate attaching step in step S10, a control board mounting step in step S11, and the like, and a series of manufacturing steps are completed. As described above, the liquid crystal panel 100 is completed.

  Further, a backlight unit for projection for functioning as a head-up display is provided on the back side of the array substrate 110 on the opposite viewing side of the liquid crystal panel 100, and the liquid crystal panel 100 Then, a liquid crystal display device to which the present invention is finally applied is completed by housing these peripheral members.

  The liquid crystal display device of the first embodiment manufactured as described above operates as follows. For example, when an electric signal such as an image signal or a control signal is input from a control substrate 134 which is an external circuit, a driving voltage is applied to the pixel electrode 112 and the counter electrode 113, and the direction of liquid crystal molecules changes according to the driving voltage. . As a result, the light transmittance of each pixel is controlled. The light emitted from the backlight unit is transmitted or blocked according to the light transmittance of each pixel by passing through the array substrate 110, the liquid crystal layer 140, and the CF substrate 120, so that the display area of the liquid crystal panel 100 is reduced. A color image or the like is displayed on 200, and the color display is projected and displayed on a windshield if the screen is prepared for a head-up display, specifically, a vehicle such as an automobile.

  Next, the operation and effect of the liquid crystal display device of the first embodiment will be described with reference to the operation explanatory diagram of FIG. 9 as appropriate. Here, FIG. 9 is a plan view similar to the plan view of the light-shielding pattern and the color material patterns 122R to 122B or the color material patterns 122Bs provided on the CF substrate 120 of FIG. In particular, FIG. 9 shows the vicinity of a portion where a BM pattern deficient portion 123d, which is a portion where a part of the pattern of the black resin layer constituting the light shielding pattern of the BM 123 is missing, is generated.

  Note that the BM pattern defect portion 123d generated in the BM 123 is formed in the step of forming the BM 123 on the mother CF substrate in the substrate preparing step described as the manufacturing method, specifically, in the step of patterning the black resin layer. The black resin layer is generated at a certain rate by disappearing, falling off, peeling off, etc. in the pattern. In particular, when the pattern width of the BM is reduced to about 5 μm or less, the occurrence probability is significantly increased. On the other hand, in the liquid crystal panel 100 of the first embodiment, as described above, it is assumed that the liquid crystal panel 100 is applied to a head-up display type liquid crystal display device, and has a relatively high definition and a relatively high aperture ratio. Since the width of the BM 123 provided along the Y direction (column direction) is set to about 5 μm or less so as to be compatible with each other, the BM pattern deficient portion 123d is relatively small even in the liquid crystal panel 100 of the first embodiment. It will occur with a high probability.

  As shown in FIG. 9, in this example, a state is shown in which two BM pattern deficient portions 123d generated in the BM 123 occur in the illustrated region, and a red pixel column and a blue pixel column. BM123 at the boundary between the BM123 and the BM123 at the boundary between the red and green pixel columns.

  When such a BM pattern deficient portion 123d occurs, in the case of a conventional general color filter substrate, the BM 123 provided between each pixel column has a color material layer of each color disposed on both sides at an end portion. Since the configuration in which the color material layers are arranged so as to overlap only in the vicinity is adopted, the color material layers of the respective colors are not overlapped at least in the central portion of the BM pattern missing portion 123d. Therefore, when the black resin layer constituting the BM 123 is eliminated, basically, only the transparent layer such as the OC layer 124 and the alignment film remains. As a result, at least the central portion of the BM pattern missing portion 123d has no light-shielding function, resulting in light leakage. Therefore, when a normal image is displayed, or particularly when a black screen is displayed, light leakage is remarkably visually recognized in the BM pattern defective portion 123d, and the product does not substantially function. In other words, the liquid crystal panel having the BM pattern deficient portion 123d becomes a defective product, which lowers the manufacturing yield.

  On the other hand, as shown in FIG. 9, in the case of the liquid crystal panel 100 of the first embodiment, two locations are shown as the BM pattern defect portion 123d. First, a red pixel column and a green pixel column are shown. Since the color material pattern 122Bs composed of a blue color material layer is arranged almost over the entire area in the BM pattern defect portion 123d generated at the boundary with the BM pattern defect portion 123d, the center of the BM pattern defect portion 123d is formed. The colored material pattern 122Bs including the portion remains. In particular, since the color material pattern 122Bs is formed of a blue color material layer having low transmittance, remarkable light leakage is not visually recognized in a local region, such as the BM pattern defect portion 123d, and a defective product is formed. You don't have to.

  Further, in the BM pattern defective portion 123d generated at the boundary between the red pixel column and the blue pixel column, a color material pattern 122B made of a blue color material layer is added to the inside of the BM opening portion 123o. Since it is provided so as to overlap with the formation region of the BM 123 provided between the pixel columns, as shown in the drawing, the BM pattern deficient portion 123d generated at the boundary between the red pixel column and the blue pixel column is generated. On the other hand, the color material pattern 122B composed of a blue color material layer is arranged so as to overlap substantially over the entire area. Therefore, although the black resin layer forming the BM 123 is eliminated in the BM pattern missing portion 123d, the colored material pattern 122B including the center of the BM pattern missing portion 123d remains. As described above, in particular, since the color material pattern 122B is formed of a blue color material layer having a low transmittance, remarkable light leakage is visually recognized in a local region such as the BM pattern defect portion 123d. Not to be defective.

  Although an example in which the BM pattern missing portion 123d occurs at the boundary between the green pixel column and the blue pixel column has been omitted from the drawings, the color material pattern is similarly applied between the pixel columns. Since 122B is provided so as to overlap the formation area of the BM 123 provided between the pixel columns, remarkable light leakage is not visually recognized, as in the case where it occurs at the boundary between the red pixel column and the blue pixel column. , It does not need to be defective.

  As described above, in the liquid crystal panel 100 of the first embodiment, the color material pattern 122B or the color material layer 122B composed of a blue color material layer is provided above the BM 123 composed of a black resin layer, particularly between pixel columns. By arranging the material patterns 122Bs so as to overlap each other, a stacked film in which the BM123 formed of a black resin layer is a lower layer and the color material pattern 122Bs formed of a blue color material layer is stacked on the BM123 formed between the pixel columns. When the BM pattern missing portion 123d is generated in the BM 123 disposed between the pixel columns, the transmittance of the BM pattern missing portion 123d is reduced. The color material pattern 122B or the color material pattern 122Bs composed of a low blue color material layer remains, and at least the BM pattern defect It can be difficult to visually for light leakage at 123d.

  Therefore, as in the configuration of the first embodiment, the probability that the BM pattern deficient portion 123d will occur in the pattern of the black resin layer forming the BM 123, particularly when the width of the BM 123 disposed between the pixel columns is reduced. Even when the height is high, remarkable light leakage is not visually recognized in the BM pattern defective portion 123d, and a defective product is generated, that is, a reduction in yield and an increase in manufacturing cost associated therewith are prevented. Can be done.

  Further, the color material pattern 122B or the color material pattern 122Bs forming the laminated film together with the BM 123 not only ensures redundancy when the pattern of the black resin layer is lost, but also is provided so as to overlap with the black resin layer. The light shielding performance at the boundary between pixel columns can also be improved. In particular, since the color material pattern 122Bs is arranged closer to the side where the liquid crystal layer 140 is arranged than the BM 123, the effect of preventing color mixing described above, particularly the effect of blocking light leakage in oblique directions, is also improved. This is advantageous in terms of improving the viewing angle, or reducing the light-shielding width required to prevent color mixing in the viewing angle range, and increasing the aperture ratio.

  In addition, the color material pattern 122B or the color material pattern 122Bs, which forms a stacked film including the black resin layer and the blue color material layer between the pixel columns together with the black resin layer forming the BM 123, is formed by adding a separate manufacturing process. There is no need to perform this step, and the pattern can be formed only by changing the pattern design (mask design) from the step of forming a color material pattern composed of a blue color material layer provided corresponding to a general blue pixel column. It is. Therefore, the operation and effect described above can be obtained without increasing the manufacturing cost.

  In the liquid crystal display device according to the first embodiment, the main characteristic portions are summarized below. First, as a configuration described above, a liquid crystal panel 100 having pixels of three or more colors including red, green, and blue is provided. Further, an array substrate 110, which is one substrate constituting the liquid crystal panel 100, includes TFTs 114 and pixel electrodes 112 provided in an array, and a CF substrate 120, which is the other substrate, has a A color filter 122 composed of color material patterns 122R to 122B composed of color material layers and a BM 123 composed of a black resin layer that shields light between pixels are provided. Further, since the color material patterns 122R to 122B are provided in a striped pattern on a column basis and are periodically arranged, the arrangement of the pixels of each color is as follows. Pixel rows of each color such as a red pixel row, a green pixel row, and a blue pixel row in which pixels are arranged are periodically arranged. Further, for each of the pixel columns of these colors, a BM 123 made of a black resin layer and a color material pattern 122B or a color material pattern 122Bs made of a blue color material layer above the BM 123 are formed between the adjacent pixel columns. Since the liquid crystal layer 140 is disposed, a surface of the CF substrate 120 on which the liquid crystal layer 140 is disposed is provided with a laminated film in which a black resin layer is a lower layer and a blue color material layer is laminated thereon. Become.

  With the above features, in the liquid crystal display device of the first embodiment, in the black resin layer forming the BM123 disposed between the pixel columns, the pattern of the black resin layer forming the BM123 is changed. When the BM pattern missing portion 123d is generated due to disappearance, dropout, peeling, or the like, light leakage at least in the BM pattern missing portion 123d can be made less visible. Therefore, even if, for example, the width of the BM 123 formed of the black resin layer disposed between the pixel columns is thinned and the probability of generating the BM pattern deficient portion 123d increases, the yield does not decrease particularly. As a result, the resin BM is formed so as to be suitable for increasing the brightness of the backlight, increasing the definition of the pixels, increasing the aperture ratio, etc., while suppressing an increase in the manufacturing cost or without particularly adversely affecting the display. It is possible to reduce the pattern width, or to increase the light shielding property of the resin BM. In addition, regardless of the thinning of the BM 123 and the probability of the occurrence of the pattern deficient portion 123d, it is possible to prevent a decrease in the yield when the pattern deficient portion 123d is generated. It is possible to improve the manufacturing yield of the device and reduce the manufacturing cost.

  Further, in the liquid crystal display device of the first embodiment, the liquid crystal panel 100 is of the FFS type which is advantageous in widening the viewing angle and high transmittance, and the slit electrodes 113s1 and 113s2 provided in the counter electrode 113 are provided. Are arranged corresponding to a pair of pixels and the pixel electrode 112 adjacent in the column direction, and extend in two different directions (linearly symmetric slit direction A and slit direction B). Since these two types of slit electrodes 113s1 and slit electrodes 113s2 are arranged alternately for each pixel in the column direction, they differ from each other even when a high-definition design with a small pixel pitch is employed. Two types of slit electrodes 113s1 and 113s2 in the extending direction can be provided. It is possible to take the design to mitigate the occurrence of a color shift phenomenon. That is, a structure suitable for a high-definition FFS liquid crystal display device can be obtained.

  In the example of the liquid crystal display device according to the first embodiment described above, the BM123 made of the black resin layer is provided between each adjacent pixel column, that is, between all the adjacent pixel columns. The configuration in which the color material pattern 122B or the color material pattern 122Bs composed of the blue color material layer is disposed thereon has been described. As a matter of course, since there is a possibility that a pattern defect portion 123d may occur in the BM 123 provided between all the adjacent pixel columns, the laminated film is arranged between all the adjacent pixel columns. It is desirable to do. However, the arrangement of the color material pattern 122Bs composed of the blue color material layer provided between the red and green pixel columns is omitted, or the BM 123 between the blue and red pixel columns, Even if the arrangement of the color material pattern 122B made of a blue color material layer provided so as to overlap each other is omitted on the BM 123, the BM 123 made of a black resin layer and the BM 123 made of a black resin layer If the color material pattern 122B or the color material pattern 122Bs composed of the blue color material layer is arranged in the upper layer, the BM pattern defect portion generated in the BM 123 located between the pixel rows having the structure is adopted. The effect of making the light leakage hard to be visually recognized for 123d is obtained. In other words, it is possible to obtain a basic effect of the present invention such that the yield can be prevented to a certain extent when the pattern missing portion 123d occurs, and the manufacturing cost can be reduced. Therefore, it is also possible to appropriately change and use the pixel row in which the BM 123 made of the black resin layer and the color material pattern 122B or the color material pattern 122Bs made of the blue color material layer are arranged thereover. In this configuration, as described above, the basic effects of the present invention can be obtained.

  Subsequently, in the liquid crystal display device according to the first embodiment, the arrangement of the color material patterns formed of the three color material layers of red, green, and blue provided on the CF substrate 120, particularly, the color material pattern formed of the blue color material layer A modified example in which the arrangement is changed will be described with reference to FIG. Note that the description will be made only for the portions different from the first embodiment. Here, FIG. 10 is a plan view for explaining the pattern arrangement of the BM 123 composed of the color material patterns of the respective colors provided on the CF substrate 120 and the black resin layer, which is a main change from the first embodiment. This corresponds to a plan view of the CF substrate 120 shown in FIG.

  In the modification shown in FIG. 10, in the liquid crystal display device according to the first embodiment, with respect to the color material patterns of each color, at least the BM opening 123o is formed along the Y direction shown in the drawing in correspondence with the pixel column of each color. A color material pattern 122R to 122B that is continuously provided in a stripe shape in a region to be covered is provided. In particular, a color material pattern 122B made of a blue color material layer is provided in a region that covers at least the BM opening 123. BM123 generally formed between the green pixel column and the blue pixel column disposed adjacent to each other, and between the red pixel column and the blue pixel column disposed adjacent to each other And a BM 123 that is provided between the red and green pixel columns in which the color material patterns 122Bs composed of the blue color material layer are arranged. It is common for the superimposed be provided on the entire, or more features.

  On the other hand, the difference is that, as shown in the figure, in addition to the color material pattern 122B and the color material pattern 122Bs made of the blue color material layer, the formation region of the BM 123 extending in the X direction, that is, the row direction in the drawing. In this case, a color material pattern 122Bg made of a blue color material layer is provided, and even in the formation region of the BM 123 extending in the row direction, the BM 123 made of a black resin layer is used as a lower layer, and a blue color material layer Thus, a laminated film in which the color material patterns 122Bg are laminated is provided.

  In the drawing, the color material pattern 122Bg is illustrated as being provided at a position connecting the color material pattern 122B and the color material pattern 122Bs extending in the Y direction in a grid pattern. Further, in the drawing, the symbols are changed according to the regions to be distinguished from each other, but the color material pattern 122B and the color material pattern 122Bs and the color material pattern 122Bg added in this modification are common blue color material layers. Because of this, the color material pattern 122B, the color material pattern 122Bs, and the color material pattern 122Bg are configured as an integrated pattern in which the blue color material layer is continuous in a lattice shape having substantially the same shape as the formation region of the BM 123. You. Therefore, in this modified example, between each pixel, the BM 123 made of a black resin layer is a lower layer, and any one of the color material pattern 122B, the color material pattern 122Bs, and the color material pattern 122Bg made of a blue color material layer is formed on the lower layer. Will be provided. In other words, in all the BM123 forming regions arranged in the display region 200, a laminated film is provided in which the BM123 made of a black resin layer is a lower layer and a blue color material layer is laminated thereon.

  The effect of this modification is that a color material pattern 122B and a color material pattern 122Bs are provided between pixel rows of each color, and a BM 123 made of a black resin layer is used as a lower layer, and a color material pattern formed of a blue color material layer is used as an upper layer. Since the provision of the laminated film formed by laminating 122B and the color material pattern 122Bs is common to the first embodiment, the effect obtained by the liquid crystal display device of the first embodiment, that is, at least the BM123 An effect of making it difficult to visually recognize light leakage at the generated BM pattern defect portion 123d is obtained. Further, the common effect is that the pattern width of the resin BM can be reduced or the light-shielding property of the resin BM can be increased while suppressing an increase in manufacturing cost or without particularly adversely affecting display. Can be obtained.

  Further, the color material pattern 122Bg added in this modification example is configured by a pattern integrated with the color material pattern 122B and the color material pattern 122Bs formed of the blue color material layer. Just as the material pattern 122Bs is formed simultaneously with the formation of the color material pattern 122B, it is only necessary to change the pattern design (mask design) when patterning the blue color material layer. In particular, it is not necessary to change the manufacturing process. As in the first embodiment, it can be formed without any cost at low cost. However, in the present modification, the color material pattern 122B and the color material pattern 122Bs formed of the blue color material layer, including the color material pattern 122B and the color material pattern 122Bs which are patterns separated from each other in the first embodiment. In addition, since the color material pattern 122Bg is constituted by a continuous pattern integrated in a lattice shape, pattern formation such as partial peeling is unlikely to occur when the blue color material layer is formed by the patterning process, and the yield is high. Thus, the present embodiment is superior to the first embodiment in terms of cost and associated cost reduction.

  Also, in the formation region of the BM 123 extending in the row direction, since the width of the BM 123 is slightly wider than that in the column direction, the occurrence probability is reduced. May occur. If the BM pattern missing portion 123d occurs in the formation region of the BM123 extending in the row direction, in Embodiment 1, a blue color material layer is provided in the formation region of the BM123 extending in the row direction. There is a concern that this could lead to failure. On the other hand, in the present modification, since the blue color material layer is provided in all the formation regions of the BM123, even if the BM pattern defect portion 123d occurs in the formation region of the BM123 extending in the row direction, it is considered as a defect. No. That is, it is possible to further increase the yield as compared with the first embodiment.

Embodiment 2. FIG.
Subsequently, the arrangement of the color material pattern including the three color material layers of red, green, and blue provided on the CF substrate 120, particularly the red color material, from the liquid crystal display device of the first embodiment described above. A modification in which the arrangement of the color material patterns composed of the layers and the green color material layers, more specifically, the stacked relationship between the BM 123 and the color material patterns 122R to 122B or the color material patterns 122Bs between the pixel rows is changed An example of a liquid crystal display device of Embodiment 2 is described with reference to FIG. Hereinafter, a description will be given mainly of a changed part from the first embodiment.

  Here, FIG. 11A is a cross-sectional view showing the vicinity of a boundary between a red pixel column and a green pixel column among pixel columns which are main changes from the first embodiment. 6A of the first embodiment. On the other hand, FIG. 11B shows the vicinity of the boundary between the blue pixel column and the green pixel column or the boundary between the red pixel column and the pixel column serving as a main change from the first embodiment. It is a cross-sectional view showing the vicinity of the part, the left part in the figure is a boundary between a blue pixel line and a green pixel line, and the right part in the figure is a boundary between a blue pixel line and a red pixel line, 6 and corresponds to the cross-sectional view of FIG. 6B of the first embodiment.

  In the second embodiment, first, as shown in the cross-sectional view near the boundary between the red pixel row and the green pixel row in FIG. A BM 123 made of a black resin layer provided on the BM 123 is provided, and a color material pattern 122R or a color material pattern 122G is provided on both sides thereof. The same as in the first embodiment, a stacked film is provided in which a BM123 made of a black resin layer is provided as a lower layer, and a color material pattern 122Bs made of a blue color material layer is provided thereon. It is.

  On the other hand, in the first embodiment, the color material pattern 122R or the color material pattern 122G disposed on both sides of the BM 123 is disposed so as to cover only both side ends of the BM 123, and the center of the BM 123 in the width direction is BM123. In contrast to the color material pattern 122Bs being directly laminated and disposed on the upper side, in the second embodiment, the color material pattern including the red color material layer disposed on the left side in the drawing with respect to the BM 123 122R is provided on the BM 123 so as to extend to the end of the formation region of the color material pattern 122G. Therefore, the color material pattern 122R or the color material pattern 122G is arranged below the color material pattern 122Bs composed of the blue color material layer, that is, between the color material pattern 122Bs and the BM 123. As a result, between the red and green pixel columns, the BM123 made of a black resin layer is used as a lower layer, and a color material pattern 122Bs made of a blue color material layer is stacked thereover. In addition to the material layer, a red color material layer or a green color material layer is included, that is, in addition to the blue color material layer, a red color material layer or a green color material layer is included. Will have an area.

  In addition, between the blue and green pixel columns or between the blue and red pixel columns shown in FIG. 11B, between the blue and green pixel columns, the BM123 is disposed on the left side in the drawing. The color material pattern 122G composed of a green color material layer is provided so as to cover the surface of the BM 123 in a region where the BM 123 is generally formed. The color material pattern 122R formed of a red color material layer disposed on the right side in the drawing is provided so as to extend so as to cover the surface of the BM 123 in a region where the BM 123 is generally formed.

  Further, between the blue and green pixel columns or between the blue and red pixel columns, a BM123 made of a black resin layer provided on the glass substrate 121 is arranged, and a color material pattern 122B made of a blue color material layer is formed of the BM123. It is the same as that between the red and green pixel columns that a black resin layer is provided as a lower layer and a blue color material layer is provided as an upper layer. Therefore, between the blue and green pixel columns or between the blue and red pixel columns, the BM123 made of the black resin layer is used as the lower layer, and the color material pattern 122B made of the blue color material layer is stacked thereover. The film further includes a red color material layer or a green color material layer in addition to the blue color material layer.

  As shown in FIGS. 11A and 11B, a flattening film made of a transparent resin film for flattening the surface of the CF substrate 120 so as to cover the stacked film provided between the pixel columns. As in the first embodiment, a certain OC layer 124 is provided, and a surface step formed near these laminated films is reduced and flattened. Further, in the second embodiment, since a red color material layer or a green color material layer is added as a configuration of the laminated film, and the number of laminated layers is increased, a step formed tends to be large. , OC layer 124 is effective in flattening the surface of CF substrate 120.

  In the liquid crystal display device according to the second embodiment described above, the BM 123 made of a black resin layer is provided on the surface of the CF substrate 120 on the liquid crystal layer 140 side between the adjacent pixel columns along the extending direction of the pixel columns. Is provided as a lower layer, and a laminated film in which a blue color material layer is laminated thereon is the same as that of the liquid crystal display device of the first embodiment, and thus can be obtained by the liquid crystal display device of the first embodiment. That is, at least the effect of making it difficult to visually recognize light leakage at the BM pattern defect portion 123d generated in the BM 123 is obtained. Further, the common effect is that the pattern width of the resin BM can be reduced or the light-shielding property of the resin BM can be increased while suppressing an increase in manufacturing cost or without particularly adversely affecting display. Can be obtained. Further, the liquid crystal display device according to the first embodiment is different from the liquid crystal display device according to the first embodiment only in that the arrangement of the color material patterns including the three color material layers provided on the CF substrate 120 is changed. In particular, there is no need to change the manufacturing process, and it can be formed at low cost.

  Further, in the liquid crystal display device according to the second embodiment described above, the color material pattern 122Bs composed of a blue color material layer is laminated on the BM 123 composed of a black resin layer provided between pixel columns as a lower layer. The liquid crystal display device according to the first embodiment has a feature that the laminated film further includes a red color material layer or a green color material layer in addition to the blue color material layer. When the BM pattern deficient portion 123d is generated in the pattern of the black resin layer forming the BM 123 between the pixel columns, the BM pattern deficient portion 123d is used in the first embodiment. In the second embodiment, a red color material layer or a green color material layer is added to the blue color material layer in addition to the blue color material layer. More Laminated film by the coloring material layer of the two colors will be remain.

  On the other hand, the light transmitted through the color material pattern 122B or the color material pattern 122Bs made of the blue color material layer is light in the blue wavelength band, and the light in the wavelength band is the color material pattern 122R made of the red color material layer. Or, it hardly transmits through the color material pattern 122G formed of the green color material layer. That is, the light in the visible light range is hardly transmitted through a laminated film including two color material layers including a blue color material layer and a red color material layer or a blue color material layer and a green color material layer. Therefore, in the BM pattern defective portion 123d in the liquid crystal display device of the second embodiment, a two-color color material layer including a blue color material layer and a red color material layer or a blue color material layer and a green color material layer is used. The laminated film remains, and hardly transmits light in the visible light range, and substantially no visible light leakage occurs. Therefore, for example, even when the BM pattern missing portion 123d having a very large area is generated, light leakage is hardly visually recognized, and no defective product is obtained. That is, it is possible to more effectively prevent a decrease in the yield and an accompanying increase in the manufacturing cost than in the liquid crystal display device of the first embodiment.

  Further, in the example of the second embodiment described above, as shown in FIG. 11A, the color material pattern 122R including the red color material layer greatly extends on the BM 123 between the red and green pixel columns. By doing so, a laminated film including a red color material layer or a green color material layer is provided in addition to the black resin layer and the blue color material layer, but the BM123 and the blue color material layer are provided. On the other hand, any one of the red color material layer and the green color material layer may be stacked and disposed, so that the color material pattern 122G formed of the green color material layer provided on the opposite side is placed on the BM 123. It is good also as a structure extended greatly in. As for the transmission characteristics of the laminated film formed by the two color material layers, assuming that at least the blue color material layer is included in the laminated film, the wavelength band transmitting each of the two color material layers is considered. It is desirable to form a laminated film in which a red color material layer is combined with a blue color material layer as a combination having a small overlap. Therefore, also between the blue and green pixel columns arranged on the left side in the drawing of FIG. 11B, the red color material layer is arranged so as to substantially cover the formation area of the BM 123, and between all the pixel columns. , And the BM123 are preferably formed so as to substantially cover the region where the BM123 is formed. With such a configuration, a more desirable form is achieved from the viewpoint of preventing light leakage when the BM pattern missing portion 123d occurs.

Embodiment 3 FIG.
Subsequently, from the liquid crystal display device according to the second embodiment described above, the lamination relationship between the BM 123 and the color material patterns 122R to 122B or the color material patterns 122Bs between the pixel columns, more specifically, A liquid crystal display device according to a third embodiment, which is a modification example in which the number of stacked color material layers constituting a stacked film provided therebetween is changed, will be described with reference to FIG. Hereinafter, a description will be given mainly of a changed part from the second embodiment.

  Here, FIG. 12A is a cross-sectional view showing the vicinity of a boundary between a red pixel column and a green pixel column among pixel columns that are main changes from the second embodiment. 11A of the second embodiment. On the other hand, FIG. 12B shows the vicinity of a boundary between a blue pixel line and a green pixel line or a boundary between a pixel line of a red pixel line and a pixel line which is a main change from the second embodiment. It is a cross-sectional view showing the vicinity of the part, the left part in the figure is a boundary between a blue pixel line and a green pixel line, and the right part in the figure is a boundary between a blue pixel line and a red pixel line, 11 and corresponds to the sectional view of FIG. 11B of the second embodiment.

  In the third embodiment, first, as shown in the cross-sectional view near the boundary between the red pixel row and the green pixel row in FIG. Of the color material pattern 122R made of a red color material layer disposed on the left side of the BM123, extends to the opposite end (the right end in the figure of the BM123) so as to cover the surface of the BM123 in a region where the BM123 is generally formed. There is provided. Further, in the third embodiment, the color material pattern 122G made of a green color material layer disposed on the right side of the figure with respect to the BM 123 also covers the surface of the BM 123 so as to cover the surface of the BM 123 in a region where the BM 123 is generally formed. It is provided to extend to an end (the left end of the BM 123 in the drawing). Therefore, both the color material pattern 122R and the color material pattern 122G are arranged in a layer below the color material pattern 122Bs composed of the blue color material layer, that is, between the color material pattern 122Bs and the BM 123. As a result, between the red and green pixel columns, the BM123 made of a black resin layer is used as a lower layer, and a color material pattern 122Bs made of a blue color material layer is stacked thereover. In addition to the blue color material layer, in addition to the blue color material layer, both the red color material layer and the green color material layer Will be included.

  In addition, between the blue and green pixel columns or between the blue and red pixel columns shown in FIG. 12B, between the former blue and green pixel columns, the BM123 is disposed on the left side in the figure. The color material pattern 122G made of a green color material layer is provided so as to extend so as to cover the surface of the BM 123 in the formation region of the BM 123 in the same manner as in the second embodiment. 3, a color material pattern 122Rs composed of a red color material layer is provided in a region where the BM 123 is generally formed. On the other hand, between the latter blue and red pixel columns, the color material pattern 122R composed of the red color material layer disposed on the right side of the figure with respect to the BM 123 is such that the surface of the BM 123 is almost covered in the BM 123 formation region. The second embodiment is the same as the second embodiment except that the color material is formed of a green color material layer in the region where the BM 123 is formed, between the blue and red pixel columns in the third embodiment. A pattern 122Gs is provided.

  The color material pattern 122Gs composed of a green color material layer provided between the blue and red pixel columns and the color material pattern 122Rs composed of a red color material layer provided between the blue and green pixel columns are shown in FIG. In (b), it is shown in a cross-sectional view, and the planar arrangement is unknown, but is provided to extend along the extending direction of each pixel column, similarly to the color material pattern 122Bs made of a blue color material layer. The BM 123 is provided so as to overlap with the BM 123 provided along the direction, and has substantially the same width as the BM 123. The color material patterns 122G provided for the green pixel columns or the color material patterns 122R provided for the red pixel columns are provided as separate patterns.

  Further, between the blue and green pixel columns or between the blue and red pixel columns, a BM123 made of a black resin layer provided on the glass substrate 121 is arranged, and a color material pattern 122B made of a blue color material layer is formed of the BM123. It is the same as that between the red and green pixel columns that a black resin layer is provided as a lower layer and a blue color material layer is provided as an upper layer. Therefore, also between the blue and green pixel columns or between the blue and red pixel columns, the BM123 made of a black resin layer is used as a lower layer, and the color material pattern 122B made of a blue color material layer is stacked thereover. The film further includes, in addition to the blue color material layer, a color material pattern 122Rs composed of a red color material layer and a color material pattern 122G composed of a green color material layer or a color material pattern 122R composed of a red color material layer. The color material pattern 122Gs including the green color material layer, that is, both the red color material layer and the green color material layer are included.

  As shown in FIGS. 12A and 12B, a flattening film made of a transparent resin film for flattening the surface of the CF substrate 120 so as to cover the stacked film provided between the pixel columns. Similar to the second embodiment, a certain OC layer 124 is provided, and the surface steps formed near these laminated films are alleviated and flattened. Further, in the third embodiment, as a configuration of the laminated film, a red color material layer and a green color material layer are added, and the number of laminated layers is further increased. The provision of the OC layer 124 is more effective in flattening the surface of the CF substrate 120.

  In the liquid crystal display device according to the third embodiment described above, a BM123 made of a black resin layer is provided on the surface of the CF substrate 120 on the liquid crystal layer 140 side along the extending direction of the pixel column between the pixel columns adjacent to each other. Is the same as the liquid crystal display device according to the first or second embodiment since the lower layer is a lower layer and the upper layer is provided with a laminated film in which a blue color material layer is laminated. The effect obtained by the liquid crystal display device of the second embodiment, that is, the effect of making it difficult to visually recognize light leakage at least in the BM pattern defect portion 123d generated in the BM 123 is obtained. Furthermore, the effect of reducing the pattern width of the resin BM or increasing the light-shielding property of the resin BM without increasing the manufacturing cost or without particularly adversely affecting the display. Can be obtained in common. Further, the liquid crystal display device according to the first embodiment is different from the liquid crystal display device according to the first embodiment only in that the arrangement of the color material patterns including the three color material layers provided on the CF substrate 120 is changed. In particular, there is no need to change the manufacturing process, and it can be formed at low cost.

  Further, in the liquid crystal display device according to the third embodiment described above, the color material pattern 122Bs composed of a blue color material layer is laminated on the BM 123 composed of a black resin layer provided between pixel columns as a lower layer. Is characterized in that it further includes both a red color material layer and a green color material layer in addition to the blue color material layer. Therefore, as described as the operation of the liquid crystal display device of the first embodiment, when the BM pattern deficient portion 123d is generated in the pattern of the black resin layer forming the BM 123 between the pixel columns, the BM pattern deficient portion 123d In the first embodiment, in the case of the first embodiment, the blue color material layer remains to prevent light leakage, and in the case of the second embodiment, in addition to the blue color material layer, a red color material While the layer or the green color material layer prevents remaining light leakage, in the third embodiment, in addition to the blue color material layer, a red color material layer and a green color material layer are formed. A laminated film of the three color material layers composed of the two remains.

  Further, as described as the operation of the second embodiment, in the case of the second embodiment, the blue color material layer and the red color material layer or the blue color material layer and the green color material layer remaining in the BM pattern defect portion 123d. Even in a laminated film of two color material layers composed of color material layers, almost all light in the visible light range can be shielded by the function of complementing the wavelength band of light transmitted through each color material layer. However, the light-shielding characteristics of the laminated film formed of the three color material layers are higher than those of the laminated film formed of the two color material layers. Therefore, compared with the liquid crystal display device of the first embodiment or the display device of the liquid crystal 2 of the embodiment, it is possible to more effectively prevent a decrease in yield and a resulting increase in manufacturing cost. .

  Further, in the above-described example of the second embodiment or the example of the third embodiment, the black resin layer and the color material layer provided between the pixel columns are laminated as compared with the case of the first embodiment. Regarding the laminated film, as the film to be laminated, either one of the green color material layers of the red color material layer, or both the green color material layers of the red color material layer are added, and the number of laminated layers is increased. However, in the laminated film, the feature that the blue color material layer is arranged on the uppermost layer, that is, the feature that is arranged on the side where the liquid crystal layer 140 is arranged is the same as that of the first embodiment. . Therefore, as described as the function and effect obtained in the first embodiment, the function of preventing color mixing, particularly the function of blocking light leakage in an oblique direction can be improved, and a view angle is improved, or This is also advantageous in terms of reducing the light blocking width required to prevent color mixing in the viewing angle range and increasing the aperture ratio.

Embodiment 4 FIG.
In the liquid crystal display devices according to Embodiments 1 to 3 described above, the case where the present invention is applied to a liquid crystal panel of a horizontal electric field system, particularly, a liquid crystal panel using an FFS system has been described as an example. An example of the configuration including the OC layer 124 which is a flattening film made of a transparent resin film for flattening the surface on the CF substrate 120 so as to be suitable for a liquid crystal panel of an in-plane switching method has been described. On the other hand, a color filter substrate (CF substrate) used for a liquid crystal panel of a TN (Twisted Nematic) mode generally has a configuration in which an OC layer which is a flattening film made of a transparent resin film for flattening the surface is omitted. Often used. As described above, when the present invention is applied to the configuration in which the OC layer is omitted, the black resin layer disposed between each pixel column and the color, particularly as in the second and third embodiments, are used. When a configuration in which the number of laminated films formed by laminating the material layers is increased is adopted, a stepped portion formed by the laminated film has an effect of relaxing the stepped portion on the substrate surface obtained by providing the OC layer 124, Alternatively, the flattening action cannot be obtained. As a result, when a rubbing process, which is a typical example, is selected as the alignment process in step S3 described in the description of the manufacturing method, the alignment is performed between these pixels in the vicinity of the step formed by the laminated film. There is a concern that defects will occur and display unevenness will occur.

  Therefore, in the case where the overcoat layer (OC layer) is omitted from the configuration of the second or third embodiment, it is desirable to partially review the manufacturing process, the configuration, and the like. Therefore, in the following, a modification in which a part of the liquid crystal display device of the second or third embodiment described above is partially changed, including a configuration in which the overcoat layer (OC layer) is omitted. An example of a liquid crystal display device of Embodiment 4 will be described below with reference to FIG. Modifications based on the second embodiment and modifications based on the third embodiment will be described together with reference to FIGS. 13A and 13B, respectively. Hereinafter, a description will be given mainly of a changed part from the second embodiment or the third embodiment.

  First, FIG. 13A corresponding to a modified example from the second embodiment shows a configuration of a CF substrate 120 which is a main changed part from the second embodiment, in FIG. 11A of the second embodiment. FIG. 3 is a cross-sectional view showing a portion near a boundary between a red pixel column and a green pixel column among pixel columns in the same manner as the cross-sectional view. On the other hand, FIG. 13B corresponding to a modified example from the third embodiment shows a configuration of the CF substrate 120 which is a main change from the third embodiment, and shows a configuration of the CF substrate 120 in the third embodiment shown in FIG. FIG. 3 is a cross-sectional view showing a portion near a boundary between a red pixel column and a green pixel column among pixel columns in the same manner as the cross-sectional view. Here, as in the case of the liquid crystal display devices according to the first to third embodiments, the configuration and the manufacturing process of the CF substrate 120 have been described before using the liquid crystal panel of the in-plane switching method, particularly the liquid crystal panel using the FFS method. Therefore, the configuration of the array substrate 110 and the configuration of the liquid crystal panel 100 excluding the CF substrate 120 are the same as those in the first embodiment.

  In the CF substrate 120 shown in FIG. 13A, as shown, the OC layer 124 provided on the surface layer is omitted from the configuration of the CF substrate 120 shown in FIG. 11A of the second embodiment. The configuration is as follows. In the CF substrate 120 shown in FIG. 13B, as shown, the OC layer 124 provided on the surface layer is different from the configuration of the CF substrate 120 shown in FIG. Is omitted. Accordingly, as shown in FIG. 13A, between the red and green pixel columns, the BM123 made of a black resin layer is used as a lower layer, and the blue layer is formed on the upper layer via a color material pattern 122R made of a red color material layer. A step is formed on the surface of the CF substrate 120 as it is with a step portion provided by a laminated film in which the color material patterns 122Bs made of the color material layers are laminated. Further, as shown in FIG. 13B, between the red and green pixel columns, a BM 123 made of a black resin layer is used as a lower layer, and a color material pattern 122R made of a red color material layer and a green color material layer are made. A step is formed on the surface of the CF substrate 120 as it is with a step portion provided by a laminated film in which a color material pattern 122Bs made of a blue color material layer is laminated on the two layers of the color material pattern 122G. Have been.

  Further, as features different from the second embodiment of the configuration of the fourth embodiment shown in FIG. 13A, and further, as features different from the third embodiment of the configuration of the fourth embodiment shown in FIG. Has a configuration in which a photo-alignment film 127 is provided on the outermost surface of the CF substrate 120 as shown in each figure. Here, the photo-alignment film 127 is an alignment film including at least a photo-reactive alignment control film, and is manufactured through a photo-alignment process as an alignment process. In FIG. 11A of the second embodiment and FIG. 12A of the third embodiment, the illustration is omitted, and only the point that an alignment film is provided on the outermost surface of the CF substrate 120 is shown. There is no difference. However, in the second and third embodiments, since the rubbing treatment is selected as the alignment treatment when forming the alignment film, the alignment film material corresponding to the rubbing treatment is used. On the other hand, the fourth embodiment is different from the fourth embodiment in that the optical alignment film 127 is provided.

  Further, the difference between the second embodiment and the third embodiment in the configuration of the fourth embodiment is as described above, but with the adoption of the configuration including the photo-alignment film 127, As described above, a difference in the manufacturing process is that the photo-alignment process is selected as the alignment process when the photo-alignment film 127 is formed. In FIGS. 13A and 13B, the light alignment film 127 is irradiated so as to conceptually show that the photo alignment film 127 is provided and that the photo alignment process is performed. Ultraviolet rays UV are indicated by arrows. More specifically, the ultraviolet rays UV are irradiated with polarized ultraviolet rays polarized in a specific direction by irradiation through a polarizing filter.

  In the liquid crystal display device according to the fourth embodiment described above, the omission of the OC film 124, the configuration of the alignment film, and the process of forming the alignment film are changed from those of the liquid crystal display device according to the second or third embodiment. BM123 made of a black resin layer as a lower layer along the extension direction of the pixel column on the surface of the CF substrate 120 on the liquid crystal layer 140 side between adjacent pixel columns, and a blue Since the liquid crystal display device according to the second or third embodiment is provided with the laminated film in which the color material layers are laminated, the liquid crystal display device according to the second or third embodiment is obtained. That is, an effect of making it difficult to visually recognize light leakage at least in the BM pattern defect portion 123d generated in the BM 123 is obtained. Further, the common effect is that the pattern width of the resin BM can be reduced or the light-shielding property of the resin BM can be increased while suppressing an increase in manufacturing cost or without particularly adversely affecting display. Can be obtained. Further, since at least two color material layers are used for the laminated film provided in each pixel column similarly to the liquid crystal display devices of the second and third embodiments, the BM pattern defect portion 123d occurs. This is a more desirable form from the viewpoint of preventing light leakage in the case.

  On the other hand, in the liquid crystal display device according to the second or third embodiment, the OC layer 124 provided on the surface layer is omitted from the configuration of the CF substrate 120, and the liquid crystal display device is provided by a laminated film provided between pixel columns. The steps are different in that the steps are formed on the surface of the CF substrate 120 as they are. On the other hand, a configuration in which a photo-alignment film 127 is provided on the outermost surface of the CF substrate 120 is adopted, and accordingly, the photo-alignment process is used as the alignment process when the alignment film is formed. The display device has. In addition, since the optical alignment process used when forming the optical alignment film 127 is performed from above the step, the alignment defect is less likely to occur near the step. As a result, in the liquid crystal display device of the fourth embodiment, the optical alignment film 127 provided in the vicinity of the step formed by the stacked film provided between the pixel columns does not cause any defective alignment, and the display unevenness does not occur. Does not occur. That is, in the liquid crystal display device according to the fourth embodiment, even if the OC layer 124 is omitted, the influence on the alignment processing when forming the alignment film provided in the step portion formed between the pixel columns. The same effect as that of the liquid crystal display device according to the second or third embodiment, which can be avoided, can be obtained in which the surface step is alleviated and flattened by the OC layer 124.

Embodiment 5 FIG.
In the liquid crystal display device according to the fourth embodiment described above, since the OC layer 124 is omitted, the alignment process performed when forming the alignment film provided in the step formed between the pixel columns is performed. Although an example in which the influence is avoided by using the photo-alignment film has been described, it is also possible to avoid or reduce the influence of the step by another method. Therefore, in the following, a modified example of the liquid crystal display device according to the fourth embodiment described above in which the influence of the stepped portion is changed to be avoided or reduced by lowering the stepped portion. The liquid crystal display device of Embodiment 5 will be described with reference to FIG. Here, of the two embodiments in the fourth embodiment, an example in which the embodiment shown in FIG. 13B based on the third embodiment is modified will be described. Hereinafter, a description will be given mainly of a modified part of the fourth embodiment or a modified part of the third embodiment, which is a modification of the fourth embodiment.

  Here, FIG. 14A is a cross-sectional view showing the vicinity of a boundary between a red pixel column and a green pixel column among pixel columns that are main changes from the fourth embodiment. 13 (b) of the fourth embodiment. On the other hand, FIG. 14B shows the vicinity of a boundary between a blue pixel line and a green pixel line or a boundary between a pixel line of red and a pixel line which is a main changed part from the fourth embodiment. It is a cross-sectional view showing the vicinity of the part, the boundary portion between the blue pixel line and the green pixel line on the left side in the figure, the boundary portion between the blue pixel line and the red pixel line on the right side in the figure, respectively 12B corresponds to the cross-sectional view of FIG. 12B of the third embodiment, which is omitted in the fourth embodiment.

  In the fifth embodiment, as shown in FIGS. 14A and 14B, regarding the configuration of the CF substrate 120, the black resin provided between the respective pixel columns due to the omission of the OC layer. A step is formed on the surface of the CF substrate 120 as it is with respect to the step formed by the layer and the layered film of the three color material layers. However, in particular, in the portion constituting the laminated film, the red color material layer and the green color material layer are provided to be thinner than the other portions, so that the step is reduced.

  Specifically, as shown in FIG. 14A, between the red and green pixel columns, the color material pattern 122R and the color material pattern 122G in the region overlapping the BM 123 are in the BM opening 123o, that is, The film thickness is smaller than each of the color material patterns 122R and 122G provided in a region that does not overlap with the BM 123. Further, as shown in FIG. 14B, between the blue and green pixel columns, the color material pattern 122G and the color material pattern 122Rs in a region overlapping with the BM 123 overlap the inside of the BM opening 123o, that is, overlap with the BM 123. The color material pattern 122G and the color material pattern 122R are provided thinner than the color material pattern 122R and the color material pattern 122R, respectively. The material pattern 122Gs is provided with a smaller thickness than each of the color material patterns 122R and 122G provided in the BM opening 123o, that is, in a region not overlapping with the BM 123.

  The color material pattern 122B and the color material pattern 122Bs made of a blue color material layer forming a layered film provided between the pixel columns are provided with a red color material layer and a green color It is desirable to be thinned like the material layer, but it is particularly a blue color material layer having a low transmittance, provided on the uppermost layer of the laminated film, provided to contribute to prevention of light leakage. Therefore, here, the blue color material layer constituting the laminated film is not reduced in thickness.

  Although the configuration of the liquid crystal display device of the fifth embodiment is different from that of the fourth embodiment as described above, the liquid crystal display device is locally thinned on the BM 123 which is a characteristic portion of the fifth embodiment. The process of manufacturing the CF substrate 120 including the color material patterns 122R and 122G and the color material patterns 122Rs and 122Gs will be described below.

  To locally reduce the film thickness, a method of covering the non-film-thinned portion with a resist mask or the like and then performing an etching process to reduce the film thickness may be selected. Since a patterning process using a photosensitive resin of each color is used, the photomask used at that time can be relatively easily changed by changing to a known gradation exposure mask such as a halftone mask or a graytone mask. Structure can be obtained.

  Specifically, in the CF substrate 120 according to the fifth embodiment, the color material pattern 122R and the color material pattern 122G that are locally thinned, and the red color material layer that forms the color material pattern 122Rs and the color material pattern 122Gs. As described above, the mask used when patterning the green color material layer is changed to a known gradation exposure mask, and the design of the gradation exposure mask is performed by exposing a portion where the color material layer is not provided by patterning. The CF substrate according to the fifth embodiment described above is designed such that the BM123 formation region between the pixels to be thinned is a halftone exposure region and the region in the BM opening 123o is a light-shielding region. 120 can be manufactured.

  According to the manufacturing process described above, in the patterning process of each color material layer in the existing process, only the mask to be used and the mask design are changed, and the manufacturing process is not particularly increased. The CF substrate 120 according to the fifth embodiment or the liquid crystal display device according to the fifth embodiment can be obtained without increasing the height.

  In the above-described liquid crystal display device of the fifth embodiment, the structure of the alignment film and the process of forming the alignment film are changed from those of the liquid crystal display device of the fourth embodiment to those similar to those of the third embodiment. Further, only the thickness of the color material pattern arranged between the pixel columns is changed only partially, and the surface of the CF substrate 120 on the liquid crystal layer 140 side is provided between the pixel columns adjacent to each other. It is the same as the liquid crystal display device of the fourth embodiment in that the BM123 made of a black resin layer is provided as a lower layer along the extending direction of the pixel column, and a stacked film in which a blue color material layer is stacked thereover is provided. Therefore, the effect obtained by the liquid crystal display device of the fourth embodiment, that is, the effect of making it difficult to visually recognize light leakage at least from the BM pattern defect portion 123d generated in the BM 123 is obtained. . Further, the common effect is that the pattern width of the resin BM can be reduced or the light-shielding property of the resin BM can be increased while suppressing an increase in manufacturing cost or without particularly adversely affecting display. Can be obtained. Further, since at least two color material layers are used in the laminated film provided in each pixel column as in the liquid crystal display device of the fourth embodiment, light leakage when the BM pattern defect portion 123d occurs is reduced. From the viewpoint of prevention, this is a more desirable form.

  On the other hand, in the liquid crystal display device of the fifth embodiment, the height of the step portion provided by the laminated film provided between the pixel columns is different from the configuration of the CF substrate 120 in the liquid crystal display device of the fourth embodiment. Is reduced and the step is changed so as to reduce the step. Therefore, even if the liquid crystal display device according to the fourth embodiment does not employ the configuration including the photo-alignment film 127 and the process using the photo-alignment process, this process can be performed. It is possible to make it difficult for alignment defects to occur in an alignment film provided in the vicinity of a step portion provided by a laminated film provided between pixel columns, and also to cause display unevenness.

  In the example of the liquid crystal display device according to the fifth embodiment described above, of the two embodiments in the fourth embodiment, a modification is made based on the embodiment in FIG. 13B based on the third embodiment. Although the above-described example has been described, the embodiment shown in FIG. 13A based on Embodiment 2 which is another embodiment of Embodiment 4 may be modified. In this case, as in the case of the liquid crystal display device of the fifth embodiment, the color material pattern 122R and the color material pattern 122G are appropriately designed using a gradation exposure mask on the BM 123, thereby designing the mask. What is necessary is just to make it the structure thinned locally. Also in this configuration, the same effect as that obtained by the liquid crystal display device of the fifth embodiment described above can be obtained.

  In the liquid crystal display device according to the fifth embodiment described above, the height of the step portion provided by the laminated film provided between the pixel columns is reduced due to the configuration of the CF substrate 120, and the step height is reduced. Although it has been changed so as to reduce the step, if it is necessary to further reduce the step, the second embodiment and the third embodiment of the present invention before the deformation in which the overcoat layer (OC layer) is omitted are omitted. As in the case of the liquid crystal display device, the configuration may be changed so as to return to the configuration in which the OC layer 124 is provided again. FIG. 15 shows a modification example in which the liquid crystal display device according to the fifth embodiment is modified. FIG. 15A is a cross-sectional view showing the vicinity of the boundary between the red pixel row and the green pixel row, and corresponds to the cross-sectional view of FIG. 14A of the fifth embodiment. On the other hand, FIG. 15B is a cross-sectional view showing the vicinity of a boundary between a blue pixel column and a green pixel column or the vicinity of a boundary between a red pixel column and a blue pixel column on the left side in the drawing. And the boundary between the green pixel row and the blue pixel row and the red pixel row are shown on the right side of the figure, respectively, and are shown in the cross-sectional view of FIG. Corresponding.

  As described above, in the modification of the liquid crystal display device of the fifth embodiment shown in FIG. 15, only the configuration provided with the OC layer 124 is changed from the liquid crystal display device of the fifth embodiment. Since the main features of are not changed, the same effects as those obtained in the fifth embodiment can be obtained. Further, in the modification, an OC layer 124 is further provided for a step portion provided by a laminated film provided between pixel columns, as compared with the liquid crystal display device of the fifth embodiment. By covering the steps, the surface steps are alleviated and flattened, so that it is difficult for alignment defects to occur in the alignment film provided in the vicinity of the steps, and in that display unevenness is unlikely to occur. Be more effective.

  In each of Embodiments 4 and 5 and the modifications thereof described above, an example using the in-plane switching method will be described as in Embodiment 2 or Embodiment 3. However, the present invention may be applied to a method other than the horizontal electric field method, for example, a liquid crystal display device including a liquid crystal panel in which a liquid crystal operation mode is a TN (Twisted Nematic) mode. In particular, it is assumed that the OC layer 124 is omitted in the case of a TN mode liquid crystal panel. For example, as a change from the second embodiment or the third embodiment, when the change is made up to using the TN mode liquid crystal panel in addition to omitting the OC layer 124, the above-described embodiment is performed. In each of the fourth embodiment, the fifth embodiment, and the modifications thereof, furthermore, the configuration of the array substrate 110 is changed, and the configuration of the CF substrate 120 other than the main part of the invention, for example, the counter electrode for driving the liquid crystal layer 140 Such changes need to be made as appropriate, for example, by adding to the CF substrate 120 side or omitting the antistatic transparent conductive layer 126 which is a configuration unique to the lateral electric field method. However, since a configuration provided in a known TN mode liquid crystal panel may be changed, a specific description of the configuration is omitted here. Further, even if each of the embodiments 4 and 5 and the modifications thereof is partially modified to a liquid crystal display device having a TN mode liquid crystal panel, it is a change other than the main part of the invention. The operational effects obtained especially for the fourth and fifth embodiments and the modified examples thereof do not change.

  In each of the first to fifth embodiments and the modifications thereof described above, basically, an example in which the present invention is applied to a liquid crystal display device for a head-up display will be described. However, the present invention can be suitably applied not only to a head-up display but also to a high-definition liquid crystal display device. Further, the present invention is not limited to the case where the width of the resin BM is narrow, that is, the liquid crystal display device having a particularly high definition is capable of preventing a decrease in yield regardless of the probability of occurrence of a pattern defect portion in the resin BM. As long as the width of the resin BM is not particularly narrow, a liquid crystal display device having the resin BM does not hinder the application of the present invention. Therefore, the main parts of the invention described in the first to fifth embodiments and the modifications thereof can be combined and applied to a liquid crystal display device including a general resin BM. Also, in this application example, as described above, the basic effects of the present invention can be obtained.

  It should be noted that the present invention is not limited to the first to fifth embodiments described above and the modified examples or configurations suggesting the modifications, and some of the components may be configured without departing from the spirit of the present invention. Can be appropriately changed to a known configuration. Further, the first to fifth embodiments described above and the respective modifications or modifications which suggest modifications thereof can be applied in combination with each other as long as no contradiction arises. Each effect and composite effect can be obtained.

100 liquid crystal panel, 110 array substrate, 120 CF substrate,
111, 121 glass substrate,
112 pixel electrode, 113 counter electrode, 113s1, 113s2 slit electrode,
114 TFT, 114c semiconductor layer,
114s source electrode, 114d drain electrode,
115 insulating film, 116 signal terminal, 117 gate wiring, 118 source wiring,
122 color filter, 122R, 122Rs color material pattern (red),
122G, 122Gs color material pattern (green),
122B, 122Bs, 122Bg color material pattern (blue),
123 black matrix (BM), 123o BM opening,
124 overcoat layer (OC film), 125 columnar spacer,
126 a transparent conductive layer for preventing static electricity, 127 a photo-alignment film,
130 sealant, 131 polarizing plate, 132 polarizing plate,
133 FFC, 134 control board, 135 drive IC chip,
140 liquid crystal layer, 190 frame area, 200 display area.

Claims (14)

A liquid crystal display device having pixels of three or more colors including red, green, and blue,
An array substrate including switching elements and pixel electrodes provided in an array, a color filter substrate including a color filter in which the color material layers of the respective colors are arranged, and a black filter layer including a black resin layer that blocks light between the pixels; Comprising a liquid crystal layer held between the array substrate and the color filter substrate,
The pixel of each color is configured such that a pixel column in which pixels of one of the colors are arranged in each column is periodically arranged,
Between the pixel columns adjacent to each other, provided on the surface of the color filter substrate on the liquid crystal side along the extending direction of the pixel columns, the black resin layer as a lower layer, and a blue color material layer as an upper layer A liquid crystal display device comprising a laminated film formed by laminating. A source wiring for supplying a video signal to the switching element on the array substrate,
2. The liquid crystal display device according to claim 1, wherein the laminated film is provided to face a region where the source line is formed.   In the laminated film, between the pixel columns of blue and red and between the pixel columns of blue and green, a blue color material layer provided in the pixel column of blue is near both end portions in the extending direction thereof. 3. The liquid crystal display device according to claim 1, further comprising a region provided to overlap the upper layer of the black resin layer. 4.   4. The liquid crystal display device according to claim 1, wherein the laminated film includes at least a region provided between the red and green pixel columns. 5.   5. The liquid crystal display device according to claim 1, wherein the laminated film is provided between each of the pixel columns adjacent to each other. 6.   The said laminated film is provided with the area | region containing the said red coloring material layer or the green said coloring material layer in addition to the said blue coloring material layer, The Claim 1 characterized by the above-mentioned. Item 2. The liquid crystal display device according to item 1.   The laminated film is provided between the pixel columns of red and green, between the pixel columns of red and blue, and between the pixel columns of green and blue, and in addition to the blue color material layer, The liquid crystal display device according to claim 6, further comprising a region including the color material layer and the green color material layer.   8. The liquid crystal display device according to claim 6, wherein the laminated film has the blue color material layer disposed on an uppermost layer. On the array substrate, together with the pixel electrode, a counter electrode forming a pair of electrodes for applying a voltage for driving liquid crystal,
At least one of the pixel electrode and the counter electrode has a slit electrode or a comb electrode, and the slit electrode or the comb electrode has two types extending in different directions with respect to a longitudinal direction thereof. 9. The liquid crystal display device according to claim 1, wherein the slit electrodes or the comb electrodes are alternately arranged for each pixel in a column direction. 10. An FFS-type liquid crystal display device including the counter electrode made of a transparent conductive film overlapping the source wiring,
The width of the black resin layer and the blue color material layer constituting the laminated film is provided wider than the width of the source wiring, and is provided at least in a width that prevents color mixture in a viewing angle range. The liquid crystal display device according to any one of claims 2 to 9, wherein:   When the width of the source wiring is d, the width for preventing color mixing in the viewing angle range is W, and the distance between the source wiring and the black resin layer is L, the width W for preventing color mixing in the viewing angle range is as follows: The relationship of W / 2 + d / 2 = L is satisfied, and the width of the black resin layer and the blue color material layer forming the laminated film is equal to or wider than the width W for preventing color mixing in the viewing angle range. The liquid crystal display device according to claim 10, wherein the liquid crystal display device is provided.   For any one of the color material layers constituting the laminated film, a film thickness is provided to be smaller than that of the color material layer of the same color as the color material layer provided in a region not overlapping with the black matrix. The liquid crystal display device according to any one of claims 1 to 11, wherein:   A flattening film made of a transparent resin layer is provided on the surface of the color filter substrate, and a step formed on the surface of the color filter substrate by the laminated film is mitigated by being covered with the flattening film. The liquid crystal display device according to claim 1.   The liquid crystal display device according to claim 1, further comprising a photo-alignment film on a surface of the color filter substrate.