JP2016197157A - Liquid crystal panel and liquid crystal display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal panel that maintains transmittance of light through a black matrix provided in a display area and has reduced transmittance of light through a peripheral area including a wiring area.SOLUTION: A substrate includes a display area R10 and a peripheral area R20. In a plan view, the peripheral area R20 includes a wiring area R20w provided with a wiring generating an electric field in a liquid crystal layer. The transmittance of light through a peripheral BM area of the peripheral area R20 where a black matrix is provided is smaller than the transmittance of light through a black matrix provided in the display area R10.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a liquid crystal panel and a liquid crystal display device in which light transmittance in a specific region is adjusted.

  When a liquid crystal display device is used in a bright environment such as outdoors in the daytime, the visibility of the image displayed by the liquid crystal display device is poor. Therefore, it is required to improve the visibility of the image displayed by the liquid crystal display device in the bright environment.

  Patent Document 1 discloses a technique (hereinafter, also referred to as “Related Art A”) for improving the light transmittance of an opening area constituting each pixel in order to improve the visibility of an image. Specifically, in Related Art A, the black matrix is configured to include cobalt oxide particles. Thereby, the light transmittance of the opening region is improved by adjusting the electric field pattern applied to the liquid crystal layer.

  In addition, in order to improve the visibility of an image, a configuration for increasing the luminance of light emitted from the backlight, a configuration for improving the utilization efficiency of light used for displaying an image, and the like are also conceivable.

  In general, in a liquid crystal panel included in a liquid crystal display device, a liquid crystal layer also exists in a peripheral region provided around a display region where an image is displayed. In addition, since an electric field is applied also to the liquid crystal layer in the peripheral region, there is a problem that light leakage occurs such that unintended light is generated from the peripheral region.

  Patent Document 2 discloses a technique (hereinafter also referred to as “Related Technology B”) in which a black matrix having a large optical density (OD value) is provided in the outer peripheral portion (peripheral region) of the display region as a countermeasure against the above-described light leakage. Has been.

JP 09-043590 A (paragraph 0056) JP-A-10-170958

  In a liquid crystal panel, a peripheral region provided around a display region includes a region where wiring for generating an electric field is provided (hereinafter also referred to as “wiring region”). The wiring is a wiring for supplying a signal to the display area. The wiring is, for example, connection wiring (signal lead-out wiring), inspection circuit wiring, or the like. Since the wiring region is a region where an electric field is generated by the wiring and an electric field is applied to the liquid crystal layer, light leakage is more likely to occur than other regions in the peripheral region. Therefore, it is required to reduce the light transmittance of the peripheral region having the wiring region while maintaining the light transmittance (light shielding degree) of the black matrix provided in the display region.

  The present invention has been made to solve such a problem, and while maintaining the light transmittance of the black matrix provided in the display region, the light transmittance of the peripheral region having the wiring region is lowered. An object is to provide a liquid crystal panel and the like.

  In order to achieve the above object, a liquid crystal panel according to one embodiment of the present invention includes a light-transmitting first substrate, a light-transmitting second substrate facing the first substrate, and the first substrate. A liquid crystal layer provided between the first substrate and the second substrate, and the second substrate has a display area for displaying an image in plan view and a periphery of the display area in plan view. A peripheral region provided in a plan view, the peripheral region has a wiring region, and the wiring region is provided with wiring for generating an electric field in the liquid crystal layer, and the liquid crystal of the second substrate A black matrix made of a resin is provided on the side in contact with the layer, and the black matrix is provided in a part of the display area so as to form pixels in the display area of the second substrate. The black matri The second substrate is further provided in a part or all of the peripheral region of the second substrate, and the light transmittance of the first region which is the region where the black matrix is provided in the peripheral region is the display It is smaller than the light transmittance of the black matrix provided in the region.

  According to the present invention, the second substrate has a display area and a peripheral area. In a plan view, the peripheral region has a wiring region in which wiring for generating an electric field is provided in the liquid crystal layer. The light transmittance of the first region, which is the region where the black matrix is provided in the peripheral region, is smaller than the light transmittance of the black matrix provided in the display region.

  Accordingly, it is possible to provide a liquid crystal panel that maintains the light transmittance of the black matrix provided in the display region and reduces the light transmittance of the peripheral region having the wiring region.

It is a top view which shows the structure of the liquid crystal panel contained in the liquid crystal display device which concerns on Embodiment 1 of this invention. It is sectional drawing of the liquid crystal panel contained in the liquid crystal display device which concerns on Embodiment 1 of this invention. It is a figure for demonstrating a pixel part. It is a top view which shows the structure of the liquid crystal panel which concerns on Embodiment 1 of this invention. It is sectional drawing of the liquid crystal panel which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the thickness of a black matrix and a color material. It is a figure which shows the relationship between retardation and the transmittance | permeability. It is sectional drawing of the liquid crystal panel which concerns on the deformation | transformation structure X1a of Embodiment 1 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on deformation | transformation structure A1 of Embodiment 2 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on deformation | transformation structure A2 of Embodiment 2 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on the deformation | transformation structure Ax of Embodiment 2 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on deformation | transformation structure A1x of Embodiment 2 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on deformation | transformation structure A2x of Embodiment 2 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on Embodiment 3 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on Embodiment 4 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on the deformation | transformation structure Cx of Embodiment 4 of this invention. It is a top view which shows the structure of the liquid crystal panel which concerns on Embodiment 5 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on Embodiment 5 of this invention. It is a top view which shows the structure of the liquid crystal panel which concerns on Embodiment 6 of this invention. It is sectional drawing which shows the structure of the liquid crystal panel which concerns on Embodiment 6 of this invention. It is a flowchart of the manufacturing method of a liquid crystal panel. It is a top view of the liquid crystal panel which concerns on a comparative example. It is a figure which shows the structure where a part of coloring material is not provided on BM opening side part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof may be omitted.

  It should be noted that the dimensions, materials, shapes, relative arrangements, and the like of the constituent elements exemplified in the embodiments are appropriately changed depending on the configuration of the apparatus to which the present invention is applied and various conditions. It is not limited to those examples. Moreover, the dimension of each component in each figure may differ from an actual dimension.

<Embodiment 1>
(Configuration of liquid crystal display device (liquid crystal panel))
FIG. 1 is a plan view showing a configuration of a liquid crystal panel 100 included in a liquid crystal display device 500 according to Embodiment 1 of the present invention. In FIG. 1, only the configuration of the liquid crystal panel 100 included in the liquid crystal display device 500 is shown.

  In FIG. 1, some components are omitted or simplified for easy understanding of the configuration. For example, in FIG. 1, only the outline of the substrate 120 is shown for a substrate 120 described later for easy understanding of the configuration.

  In FIG. 1, the X direction, the Y direction, and the Z direction are orthogonal to each other. Each of the X direction, the Y direction, and the Z direction shown in the following figures is also orthogonal to each other. Hereinafter, a direction including the X direction and the direction opposite to the X direction (−X direction) is also referred to as “X axis direction”. In the following, the direction including the Y direction and the direction opposite to the Y direction (−Y direction) is also referred to as “Y-axis direction”. Hereinafter, a direction including the Z direction and a direction opposite to the Z direction (−Z direction) is also referred to as a “Z-axis direction”.

  Hereinafter, a plane including the X-axis direction and the Y-axis direction is also referred to as an “XY plane”. Hereinafter, a plane including the X-axis direction and the Z-axis direction is also referred to as an “XZ plane”. Hereinafter, a plane including the Y-axis direction and the Z-axis direction is also referred to as a “YZ plane”.

  FIG. 2 is a cross-sectional view of liquid crystal panel 100 included in liquid crystal display device 500 according to Embodiment 1 of the present invention. FIG. 2 shows only the configuration of the liquid crystal panel 100 included in the liquid crystal display device 500. Specifically, FIG. 2 is a cross-sectional view of the liquid crystal panel 100 taken along line A1-A2 of FIG. In FIG. 2, some components are omitted or simplified for easy understanding of the configuration.

  1 and 2, liquid crystal display device 500 includes a liquid crystal panel 100, a backlight unit (not shown), which will be described later, and the like. The liquid crystal display device 500 displays an image on a display region R10 (to be described later) of the liquid crystal panel 100 using light emitted from a backlight unit (not shown).

  The liquid crystal panel 100 is, for example, a TN (Twisted Nematic) mode liquid crystal panel. The liquid crystal panel 100 includes control substrates 135a and 135b, connection cables 136a and 136b, substrates 110 and 120, a liquid crystal layer 30, a sealing material SL1, and a plurality of spacers SP1.

  The control boards 135a and 135b are boards on which a circuit for controlling the liquid crystal panel 100 is mounted.

  Each of the substrates 110 and 120 has translucency. The substrate 110 is an array substrate having a configuration for controlling the liquid crystal layer 30. The substrate 120 is a color filter substrate that emits light transmitted through the substrate 120 as color light. The color light is, for example, red light, green light, blue light, or the like. The substrate 120 faces the substrate 110. The size of the substrate 110 in the XY plane is larger than the size of the substrate 120 in the XY plane.

  The substrate 110 and the substrate 120 are bonded to each other by the seal material SL1. The sealing material SL1 is made of resin, for example. The shape of the sealing material SL1 in a plan view (XY plane) is a closed loop shape (frame shape). In addition, the space | interval of the board | substrate 110 and the board | substrate 120 is set to the predetermined space | interval by several spacer SP1. That is, each spacer SP <b> 1 is a member for defining the distance between the substrate 110 and the substrate 120. That is, each spacer SP <b> 1 is a member for defining the thickness of the liquid crystal layer 30. Note that, in a plan view (XY plane), each spacer SP1 is provided in a display region R10 described later. Each spacer SP1 is made of resin, for example. The shape of the spacer SP1 is, for example, a columnar shape. The spacer SP1 may have a spherical shape.

  The liquid crystal layer 30 includes a plurality of liquid crystals 31. In FIG. 2, only two liquid crystals 31 are shown to make the configuration easy to see, but actually, the liquid crystal layer 30 includes a very large number of liquid crystals 31. A liquid crystal layer 30 is sealed in a region (space) formed by the substrate 110, the substrate 120, and the sealing material SL1. That is, the liquid crystal layer 30 is provided between the substrate 110 and the substrate 120.

  The liquid crystal panel 100 is manufactured by an ODF (One Drop Filling) method which is a dropping injection method. In the dropping injection method, a plurality of liquid crystals as droplets are arranged on one surface of the substrate 110 and the substrate 120 provided with the sealing material SL1. Thereafter, each liquid crystal is sandwiched between the substrate 110 and the substrate 120. Thereby, the liquid crystal layer 30 is sealed in the region formed by the substrate 110, the substrate 120, and the sealing material SL1, but the liquid crystal panel 100 is manufactured.

  Accordingly, the sealing material SL1 is not formed with an injection port which is an opening for injecting liquid crystal unlike a liquid crystal panel manufactured by a vacuum injection method. Therefore, the sealing material SL1 has a structural feature that the sealing material for sealing the injection port is not provided in the sealing material SL1.

  The liquid crystal panel 100 has a display region R10 and a peripheral region R20. The display area R10 is an area for the liquid crystal panel 100 to display an image in a plan view (XY plane). The display region R10 includes a plurality of pixel portions 5P described later arranged in a matrix in a plan view (XY plane). The liquid crystal panel 100 displays an image using the plurality of pixel units 5P.

  FIG. 3 is a diagram for explaining the pixel portion 5P. The pixel unit 5P includes pixels 5R, 5G, and 5B. The pixel 5R is a pixel that emits red light as necessary. The pixel 5G is a pixel that emits green light as necessary. The pixel 5B is a pixel that emits blue light as necessary. Hereinafter, each of the pixels 5R, 5G, and 5B is also referred to as a “pixel 5”. In the following, the region where the pixel 5 is formed is also referred to as a “pixel region”.

  Referring to FIGS. 1 and 2 again, peripheral region R20 is provided around display region R10 in plan view (XY plane). Specifically, the peripheral region R20 is a region surrounding the display region R10 in plan view (XY plane). The shape of the peripheral region R20 in a plan view (XY plane) is a closed loop shape (frame shape).

  Note that the display region R10 and the peripheral region R20 are applied to the space in which the liquid crystal panel 100 is configured and the XY plane, XZ plane, and YZ plane in the space in the same manner as the liquid crystal panel 100. That is, the display region R10 and the peripheral region R20 are applied to each component (the substrates 110 and 120, the liquid crystal layer 30, etc.) constituting the liquid crystal panel 100 in the same manner as the liquid crystal panel 100. Therefore, for example, the substrate 120 of the liquid crystal panel 100 includes a display region R10 and a peripheral region R20.

  The liquid crystal layer 30 is provided over the entire display region R10 in plan view (XY plane). Further, the liquid crystal layer 30 is provided in a part of the peripheral region R20 in plan view (XY plane).

  Next, the substrate 110 as the array substrate will be described in detail. 1 and 2, a substrate 110 includes a polarizing plate 51, a glass substrate 111, a plurality of pixel electrodes 113, a plurality of switching elements SW1, an inspection wiring 119, and an inspection circuit (not shown). ), An insulating film 115, an alignment film 112, a plurality of gate wirings WG1, a plurality of source wirings WS1, terminals 116a and 116b, driving ICs (Integrated Circuits) 141a and 141b, and transfer electrodes (not shown). ).

  The polarizing plate 51 has a transmission axis and an absorption axis that are orthogonal to each other. The polarizing plate 51 absorbs light that vibrates along the absorption axis. That is, the polarizing plate 51 does not transmit light that vibrates along the absorption axis of the polarizing plate 51.

  The glass substrate 111 is a transparent substrate having translucency. A plurality of switching elements SW1 and inspection wiring 119 are provided on one surface of the glass substrate 111. The polarizing plate 51 described above is provided on the other surface of the glass substrate 111.

  Each switching element SW1 is set to an on state or an off state. Each switching element SW1 is, for example, a TFT (Thin Film Transistor). The inspection wiring 119 is connected to an inspection circuit (not shown) for performing various inspections. The inspection circuit is a circuit used in a state before the liquid crystal display device 500 is manufactured (hereinafter also referred to as “state St1”).

  The state St1 is a state immediately before the control boards 135a and 135b are attached to the liquid crystal panel 100, for example. The inspection circuit is a circuit for performing an operation test of the liquid crystal panel 100 in the state St1.

  Note that a plurality of constituent elements (not shown) are further provided on one surface of the glass substrate 111.

  The insulating film 115 is provided on one surface of the glass substrate 111 so that the insulating film 115 covers the inspection wiring 119, each switching element SW1, and the like.

  Each pixel electrode 113 is provided corresponding to each pixel 5 in the display region R10. Each pixel electrode 113 is an electrode for generating an electric field in the liquid crystal layer 30. Specifically, each pixel electrode 113 is used in the liquid crystal layer 30 to generate an electric field for changing the direction of the liquid crystal 31. Note that the electric field is generated in a region between a common electrode 123 (described later) provided on the substrate 120 and each pixel electrode 113.

  The alignment film 112 is a film for aligning the liquid crystal 31. The alignment film 112 is provided on one surface of the insulating film 115 so that the alignment film 112 covers each pixel electrode 113.

  Each gate line WG1 and each source line WS1 are lines for transmitting a signal for controlling each switching element SW1 to each switching element SW1, although details will be described later.

  As shown in FIG. 1, each gate line WG1 is provided to extend in the row direction (X-axis direction) in the display region R10. Further, each source line WS1 is provided so as to extend in the column direction (Y-axis direction) in the display region R10 as shown in FIG. A switching element SW1 is provided in the vicinity of a portion where each gate line WG1 and each source line WS1 intersect. That is, each switching element SW1 is provided in a matrix.

  Further, as shown in FIG. 1, a pixel electrode 113 (pixel electrode) is provided in each rectangle (pixel region) formed by each gate wiring WG1 and each source wiring WS1. That is, the pixel electrodes 113 are provided in a matrix. The pixel electrode 113 is electrically connected to the switching element SW1.

  The driving ICs 141a and 141b control each pixel region (pixel 5), as will be described in detail later. The drive IC 141a is connected to each source wiring WS1 by a plurality of connection wirings (not shown). The driving IC 141b is connected to each gate wiring WG1 by a plurality of connection wirings (not shown).

  The substrate 110 is provided with terminals 116a and 116b. Each of the terminals 116a and 116b is a terminal for receiving an external signal or the like.

  The terminal 116a is connected to the control board 135a by a connection cable 136a. The terminal 116b is connected to the control board 135b by a connection cable 136b. The control board 135a is provided with a control IC (not shown) for controlling the drive IC 141a. The control board 135b is provided with a control IC (not shown) that controls the drive IC 141b. Each of the connection cables 136a and 136b is, for example, an FFC (Flexible Flat Cable).

  Hereinafter, each of the control boards 135a and 135b is also collectively referred to as a “control board 135”. In the following, each of the drive ICs 141a and 141b is also collectively referred to as “drive IC 141”. In the following, each of the terminals 116a and 116b is also collectively referred to as “terminal 116”. Hereinafter, each of the connection cables 136a and 136b is also collectively referred to as a “connection cable 136”.

  Although details will be described later, a control signal output from a control IC (not shown) of the control board 135 is transmitted to the input terminal of the drive IC 141 via the terminal 116. As a result, a control signal is output from the output terminal of the drive IC 141. The control signal is transmitted to the switching element SW1 in the display region R10 via a plurality of connection wires (not shown).

  The aforementioned transfer electrode (not shown) is connected to the terminal 116 by a connection wiring (not shown). The transfer electrode is an electrode for transmitting a signal received by the terminal 116 to the substrate 120.

  The terminals 116a and 116b, the transfer electrode, the connection wiring, the inspection wiring 119, and the inspection circuit are provided on the substrate 110 in the peripheral region R20.

  Next, the substrate 120 as the color filter substrate will be described in detail. Referring to FIGS. 1 and 2, substrate 120 includes a polarizing plate 52, a glass substrate 121, a plurality of color materials 7, a black matrix 20, a common electrode 123, and an alignment film 122.

  The polarizing plate 52 is a plate having the same function and configuration as the polarizing plate 51. Specifically, the polarizing plate 52 is provided on the glass substrate 121 so that the absorption axis of the polarizing plate 52 is orthogonal to the absorption axis of the polarizing plate 51 in plan view (XY plane). In other words, the polarizing plate 51 is provided on the glass substrate 111 so that the absorption axis of the polarizing plate 51 is orthogonal to the absorption axis of the polarizing plate 52 in plan view (XY plane).

  The glass substrate 121 is a transparent substrate having translucency. The thickness of the glass substrate 121 is about 0.7 mm, for example. A plurality of color materials 7 and a black matrix 20 are provided on one surface of the glass substrate 121. The polarizing plate 52 described above is provided on the other surface of the glass substrate 121.

  Referring to FIGS. 2 and 3, each color material 7 is a color filter having translucency. The color material 7 is generated, for example, by dispersing a pigment having a color in a resin. The color material 7 functions as a filter that selectively transmits light in a specific wavelength range corresponding to red, green, blue, and the like.

  Further, the color material 7 emits light that passes through the color material 7 as color light. That is, the color material 7 is a member for expressing a color when the color material 7 is irradiated with light. The color material 7 is a light amount reducing member that absorbs part of the light when the color material 7 is irradiated with light. The color material 7 is provided in the display region R10.

  Hereinafter, the color material 7 that emits red light is also referred to as a “color material 7R”. Hereinafter, the color material 7 that emits green light is also referred to as a “color material 7G”. Hereinafter, the color material 7 that emits blue light is also referred to as a “color material 7B”.

  The color material 7R is a color material for forming the pixel 5R. The color material 7G is a color material for forming the pixel 5G. The color material 7B is a color material for forming the pixel 5B. That is, each pixel unit 5P arranged in a matrix in plan view (XY plane) is configured by regularly arranging the color materials 7R, 7G, and 7B as shown in FIG.

  The black matrix 20 is a light blocking member that blocks part or all of light. In other words, the black matrix 20 is a light quantity reducing member that absorbs part or all of the light when the black matrix 20 is irradiated with light. Note that the greater the thickness of the black matrix 20, the closer the light transmittance of the black matrix 20 is to zero. That is, as the thickness of the black matrix 20 is smaller, the light transmittance of the black matrix 20 is closer to 100. In the following, the light transmittance may be simply expressed as “transmittance”. In the following, the black matrix may be simply expressed as “BM”.

  The black matrix 20 is made of resin. Specifically, the black matrix 20 is composed of a black resin generated by dispersing black particles in a photosensitive resin. The black particles are particles such as carbon black (carbon black pigment) and titanium black (titanium black pigment).

  Further, the black matrix 20 is provided in a part of the display region R10 so as to form a plurality of pixels 5 in the display region R10 of the substrate 120. Specifically, the black matrix 20 has an opening H1 formed in each pixel 5 (pixel region). In the following, a part of the black matrix 20 in contact with the opening H1 is also referred to as “BM opening side part”.

  The color material 7 is provided from the inside of the opening H1 of each pixel region to the upper surface of the side portion of the BM opening. For example, the color material 7R is provided from the inside of the opening H1 of the pixel region where the pixel 5R is formed to the upper surface of the BM opening side portion of the black matrix 20 existing in the pixel region.

  Hereinafter, the black matrix 20 existing between two adjacent color materials 7 (pixels 5) is also referred to as a “pixel forming portion 20x”. The pixel forming portion 20x is provided at the boundary portion between two adjacent pixels 5. The pixel forming unit 20 x forms the outline of the pixel 5.

  As described above, the color material 7 is provided from the inside of the opening H1 of each pixel region to the upper surface of the BM opening side portion. That is, a part of the color material 7 is provided so as to overlap the BM opening side. This configuration is a configuration that takes into account a state in which an overlap shift between part of the color material 7 and the BM opening side portion occurs. Specifically, this configuration is a configuration that prevents unintended achromatic light from passing through the substrate 120 due to the presence of a gap between the BM opening side portion and the color material 7.

  As shown in FIG. 2, the black matrix 20 is provided in almost the entire peripheral region R <b> 20 of the substrate 120 in order to block unnecessary light in displaying an image. That is, as shown in FIG. 2, in the peripheral region R20 included in the substrate 120, there is a region where the black matrix 20 is not provided.

  The black matrix 20 may be provided in the entire peripheral region R20 included in the substrate 120. That is, the black matrix 20 is provided in part or all of the peripheral region R20 included in the substrate 120.

  The common electrode 123 is provided so as to cover the black matrix 20 and each color material 7. The common electrode 123 is an electrode for generating an electric field in the liquid crystal layer 30 using each of the pixel electrodes 113 described above.

  The alignment film 122 is a film for aligning the liquid crystal 31. The alignment film 122 is provided so that the alignment film 122 covers a part of the common electrode 123 in the display region R10. That is, one surface of the alignment film 122 included in the substrate 120 and one surface of a part of the common electrode 123 covering the black matrix 20 are in contact with the liquid crystal layer 30. Therefore, the black matrix 20 is provided on the side of the substrate 120 that is in contact with the liquid crystal layer 30.

  The transfer electrode (not shown) of the substrate 110 and the common electrode 123 are electrically connected by a transfer material. The transfer material is a member in which conductive particles are dispersed in a resin. The conductive particles are preferably elastically deformable in order to stably maintain a conductive state. The conductive particle is, for example, a spherical resin having a surface plated with gold.

  Note that the terminal 116 also receives a signal from the outside toward the common electrode 123. The signal is transmitted to the common electrode 123 via the terminal 116.

  As described above, the liquid crystal display device 500 further includes a backlight unit (not shown) as a light source. The backlight unit emits light used for the liquid crystal panel 100 to display an image. Hereinafter, the light emitted from the backlight unit is also referred to as “light La”.

  The backlight unit is provided below the substrate 110 in FIG. An optical sheet (not shown) is provided between the liquid crystal panel 100 and the backlight unit. The optical sheet is a sheet that controls the polarization state of light, the directivity of light, and the like.

  The backlight unit emits light La toward the substrate 110 of the liquid crystal panel 100. The light La passes through the substrate 110 and enters the liquid crystal layer 30 in the display region R10. The liquid crystal layer 30 changes an amount of transmitting the light La emitted from the backlight unit according to control from the outside. Hereinafter, the light La emitted from the liquid crystal layer 30 when the light La is incident on the liquid crystal layer 30 is also referred to as “emitted light Lb”.

  The liquid crystal panel 100 displays an image on the display region R10 by transmitting the emitted light Lb emitted from the liquid crystal layer 30 through part or all of the above-described color materials 7 on the substrate 120. Hereinafter, a surface of the substrate 120 that displays an image in the display region R10 is also referred to as a “display surface”. The display surface is, for example, the upper surface of the substrate 120 in FIG.

  The liquid crystal display device 500 further includes a housing (not shown). The housing is provided with an opening for exposing the display surface to the outside. The casing of the liquid crystal display device 500 accommodates each component included in the liquid crystal display device 500. The constituent elements are, for example, a liquid crystal panel 100, a backlight unit, an optical sheet, and the like.

  Next, a process for displaying an image on the display surface (hereinafter also referred to as “image display process”) will be briefly described. In the video display process, for example, the drive IC 141 receives a control signal output from the control board 135. The drive IC 141 transmits a signal to some or all of the plurality of pixel regions (pixels 5) using each gate line WG1, each source line WS1, and each switching element SW1.

  As a result, a predetermined drive voltage is generated between the pixel electrode 113 and the common electrode 123 in each pixel region that has received the signal. In accordance with the generation of the drive voltage, the orientation of the liquid crystal 31 in the pixel region where the drive voltage is generated changes. Then, the light La emitted from the backlight unit passes through the substrate 110 and enters the liquid crystal layer 30 in the display region R10. Then, the emitted light Lb is transmitted through part or all of the above-described color materials 7 on the substrate 120, whereby an image is displayed on the display surface (display region R10).

(Characteristic configuration)
Next, a characteristic configuration (hereinafter also referred to as “characteristic configuration X1”) in the present embodiment will be described in detail. FIG. 4 is a plan view showing the configuration of the liquid crystal panel 100 according to Embodiment 1 of the present invention. In FIG. 4, some components are simplified for easy understanding of the configuration. In FIG. 4, in order to make the feature configuration X1 easy to understand, the width of a part of the peripheral region R20 is made larger than the actual width.

  Referring to FIG. 4, liquid crystal panel 100 has a wiring region R20w in peripheral region R20 in plan view (XY plane). The wiring region R20w is a region where the liquid crystal layer 30, wiring, circuits, and the like are provided in plan view (XY plane). In the wiring region R20w, the wiring W1 is provided in a plan view (XY plane). The wiring W1 is the above-described inspection wiring 119, the wiring constituting the above-described inspection circuit (not shown), the above-described connection wiring (not shown), or the like. That is, the wiring W1 that generates an electric field in the liquid crystal layer 30 is provided in the wiring region R20w. That is, the wiring region R20w is a region in which the orientation of the liquid crystal 31 changes when an electric field is applied to the liquid crystal layer 30.

  As described above, the black matrix 20 is provided in the peripheral region R20 in plan view (XY plane). Note that, in a plan view (XY plane), the black matrix 20 is provided over the entire wiring region R20w. Note that the black matrix 20 may be provided in a part of the wiring region R20w in plan view (XY plane).

  FIG. 5 is a cross-sectional view of liquid crystal panel 100 according to Embodiment 1 of the present invention. Specifically, FIG. 5 is a cross-sectional view of the liquid crystal panel 100 taken along line B1-B2 of FIG. That is, FIG. 5 is a cross-sectional view of the wiring region R20w of the liquid crystal panel 100. In FIG. 5, some components shown in FIG. 2 are omitted or simplified for easy understanding of the feature configuration X1. For example, FIG. 5 does not show the spacer SP1 or the like shown in FIG.

  Hereinafter, the area where the black matrix 20 is provided in the peripheral area R20 in plan view (XY plane) is also referred to as “peripheral BM area”. That is, the black matrix 20 that is a light amount reducing member is provided in the peripheral BM region.

  In the following, the area where the black matrix 20 is provided in the display area R10 in plan view (XY plane) is also referred to as a “display BM area”. That is, in the plan view (XY plane), the display area R10 has a display BM area.

  Hereinafter, the black matrix 20 provided in the display region R10 is also referred to as “display region BM”. The display area BM is, for example, the above-described pixel formation unit 20x in FIG. Hereinafter, the black matrix 20 provided in the peripheral BM area is also referred to as “peripheral area BM”.

  The characteristic configuration X1 is a configuration for making the light transmittance of the peripheral BM region of the peripheral region R20 smaller than the light transmittance of the display region BM. That is, the characteristic configuration X1 is a configuration for making the light transmittance of the BM for the peripheral region smaller than the light transmittance of the BM for the display region.

  In the characteristic configuration X1, the thickness of the liquid crystal layer 30 existing in the peripheral BM region in plan view (XY plane) is smaller than the thickness of the liquid crystal layer 30 existing in the display BM region in plan view (XY plane). The thickness of the region BM is made larger than the thickness of the display region BM. Specifically, in the feature configuration X1, the display region BM is configured by a single layer, and the peripheral region BM is configured by a plurality of layers.

  In the feature configuration X1, the black matrix 21 is provided in the display region R10 and the peripheral region R20 of the substrate 120. The black matrix 21 is made of the same material as that described above that forms the black matrix 20. The black matrix 21 is provided on one surface of the glass substrate 121. That is, in the feature configuration X1, the black matrix 20 (display region BM) provided in the display region R10 includes only the black matrix 21.

  2 and 5, a black matrix 22 is provided on one surface of the black matrix 21 in the peripheral BM region. That is, the black matrix 20 (peripheral region BM) provided in the peripheral BM region is composed of the black matrices 21 and 22. The black matrix 22 is made of the same material as the above-described material constituting the black matrix 20. The thickness of the black matrix 22 is the same as or equivalent to the thickness of the black matrix 21. Note that the thickness of the black matrix 22 may not be equal to the thickness of the black matrix 21.

  As described above, in the feature configuration X1, the thickness of the liquid crystal layer 30 existing in the peripheral BM region in the plan view (XY plane) is smaller than the thickness of the liquid crystal layer 30 existing in the display BM region in the plan view (XY plane). The thickness of the peripheral area BM is larger than the thickness of the display area BM. For this reason, the light transmittance of the peripheral BM region is smaller than the light transmittance of the display region BM. Therefore, the feature configuration X1 can suppress or prevent the occurrence of light leakage in the peripheral region R20 of the liquid crystal panel according to the following comparative example, particularly in the wiring region R20w.

  FIG. 23 is a plan view of a liquid crystal panel 900 according to a comparative example. The liquid crystal panel 900 does not have the characteristic configuration X1 as compared with the liquid crystal panel 100 of FIGS. Since the other configuration of liquid crystal panel 900 is the same as that of liquid crystal panel 100, detailed description will not be repeated.

  As shown in FIG. 23, in the liquid crystal panel 900, the light leakage portion LP1 occurs in the wiring region R20w in the peripheral region R20. The light omission portion LP1 is a portion where the light emitted from the backlight unit has transmitted through the substrate 120 when the liquid crystal panel 900 displays an image (for example, white solid). That is, in the liquid crystal panel 900, light leakage occurs in the wiring region R20w. The light omission portion LP1 exists, for example, in a region where the wiring W1 is provided. As described above, the wiring W1 is the inspection wiring 119, the wiring constituting the inspection circuit, the connection wiring, or the like.

  In the present embodiment, the thickness of the display area BM is not increased. Therefore, as shown in FIG. 6, the thickness of the display area BM (black matrixes 20, 21) can be made smaller than the thickness of the color material 7.

  In the present embodiment, as described with reference to FIG. 3, a part of the color material 7 is provided so as to overlap the BM opening side. That is, the color material 7 is provided as shown in FIG. Therefore, as shown in FIG. 24, light leakage due to the region R9 having a configuration in which part of the color material 7 is not provided on the BM opening side portion does not occur. The arrows in FIG. 24 indicate light related to light leakage. A region R9 in FIGS. 6 and 24 is a region where a step between the BM opening side portion (black matrixes 20 and 21) and the color material 7 exists. The light leakage in the configuration of FIG. 24 is light leakage caused by liquid crystal alignment abnormality due to the step in the region R9.

  In the present embodiment, the thickness of the liquid crystal layer 30 existing in the peripheral BM region is smaller than the thickness of the liquid crystal layer 30 existing in the display BM region. Thereby, the gap between the substrate 110 and the substrate 120 in the peripheral region R20 can be narrowed. Therefore, the retardation value of the liquid crystal layer 30 existing in the peripheral BM region can be made smaller than the retardation value of the liquid crystal layer 30 existing in the display BM region. The retardation value is a value indicating a phase difference between ordinary light and abnormal light generated when light passes through the liquid crystal layer. Therefore, the transmittance of the liquid crystal layer 30 existing in the peripheral BM region can be made smaller than the transmittance of the liquid crystal layer 30 existing in the display BM region.

  In this case, the relationship between the retardation value and the transmittance is as shown in FIG. In FIG. 7, the horizontal axis represents the retardation value. The vertical axis represents the transmittance. Referring to FIG. 7, the transmittance corresponding to the retardation value of peripheral region R20 is smaller than the transmittance corresponding to the retardation value of display region R10.

  Hereinafter, the region where the liquid crystal layer 30 is provided in the peripheral region R20 in plan view (XY plane) is also referred to as “peripheral liquid crystal region R2c”. In the following, the area where the wiring W1 is provided in the peripheral liquid crystal region R2c in plan view (XY plane) is also referred to as “peripheral liquid crystal region R2cw”. The peripheral liquid crystal region R2cw is a region in which the orientation of the liquid crystal 31 changes when an electric field is applied to the liquid crystal layer 30.

  In the following, the liquid crystal 31 present in the peripheral liquid crystal region R2c in plan view (XY plane) is also referred to as “liquid crystal 31a”. The liquid crystal 31a is a liquid crystal that changes the orientation of the liquid crystal 31a when an electric field is applied to the liquid crystal layer 30 existing in the peripheral liquid crystal region R2c.

  In the following, the liquid crystal 31 existing in a region other than the peripheral liquid crystal region R2cw in the peripheral liquid crystal region R2c in plan view (XY plane) is also referred to as “liquid crystal 31n”. The liquid crystal 31n is a liquid crystal in which the orientation of the liquid crystal 31n does not change even when an electric field is applied to the liquid crystal layer 30 existing in the peripheral liquid crystal region R2c.

  The feature configuration X1 may be the following modified configuration X1a. The modified configuration X1a is a configuration in which the black matrix 22 is provided only in the peripheral liquid crystal region R2c, for example, as shown in FIG.

  According to the modified configuration X1a of FIG. 8, the gap length d1b is larger than the gap length d1a. The gap length d1b is the distance between the portion of the substrate 120 existing in the region other than the peripheral liquid crystal region R2c and the substrate 110 in the modified configuration X1a of FIG. The gap length d1a is the distance between the substrate 120 and the substrate 110 in the configuration of FIG. That is, in the modified configuration X1a of FIG. 8, the gap of the region for forming the sealing material SL1 is not reduced. Therefore, in the modified configuration X1a of FIG. 8, the sealing material SL1 can be formed more stably than the configuration of FIG.

  The modified configuration X1a may be a configuration in which the black matrix 22 is provided only in the peripheral liquid crystal region R2cw.

  The black matrix 20 (BM) of the present embodiment is generated using, for example, a known halftone exposure technique. The black matrix 20 (BM) is a technique that uses a halftone mask as an exposure mask for BM formation. As a result, the BM formation process is completed in one process, so the number of processes for manufacturing the liquid crystal panel does not increase.

  As described above, according to the present embodiment, the substrate 120 has the display region R10 and the peripheral region R20. In plan view (XY plane), the peripheral region R20 has a wiring region R20w provided with a wiring W1 for generating an electric field in the liquid crystal layer 30. The light transmittance of the peripheral BM region where the black matrix 20 is provided in the peripheral region R20 is smaller than the light transmittance of the black matrix 20 provided in the display region R10.

  Accordingly, it is possible to provide a liquid crystal panel in which the light transmittance of the peripheral region R20 having the wiring region R20w is reduced while maintaining the light transmittance of the black matrix 20 provided in the display region R10. That is, light leakage in the peripheral region R20 can be improved without changing the characteristics and film thickness of the black matrix 20 arranged in the display region R10.

  In the present embodiment, the thickness of the liquid crystal layer 30 existing in the peripheral BM region is smaller than the thickness of the liquid crystal layer 30 existing in the display BM region. That is, the gap between the substrate 110 and the substrate 120 in the peripheral region R20 can be narrowed. Therefore, the retardation value of the liquid crystal layer 30 existing in the peripheral BM region can be made smaller than the retardation value of the liquid crystal layer 30 existing in the display BM region. Therefore, the transmittance of the liquid crystal layer 30 present in the peripheral BM region can be made smaller than the transmittance of the liquid crystal layer 30 present in the display BM region. Thereby, the light quantity related to the light omission in the peripheral region R20 can be reduced.

  In the present embodiment, the thickness of the light amount reducing member (black matrix 20) in the peripheral region R20 (peripheral BM region) is larger than the thickness of the black matrix 20 in the display region R10. Therefore, it is possible to effectively reduce the amount of light related to light leakage only in a desired region (peripheral BM region).

  Further, since the light amount reducing member is thick, the thickness of the liquid crystal layer 30 in the peripheral region R20 (peripheral BM region) is reduced. Therefore, the transmittance of the liquid crystal layer 30 can be lowered. Thereby, the effect of suppressing or preventing light leakage from the peripheral region R20 (peripheral BM region) is also obtained.

  As described above, in the present embodiment, even in a configuration using a backlight that emits high-luminance light, light leakage from the peripheral region R20 (peripheral BM region) including the wiring region R20w can be suppressed or prevented. .

  In the present embodiment, the liquid crystal panel 100 includes the control boards 135a and 135b and the connection cables 136a and 136b. However, the present invention is not limited to this. The liquid crystal panel 100 may be configured not to include, for example, the control boards 135a and 135b and the connection cables 136a and 136b. In this configuration, the liquid crystal display device 500 includes control boards 135a and 135b and connection cables 136a and 136b.

  As described above, in general, in a liquid crystal panel included in a liquid crystal display device, a liquid crystal layer also exists in a peripheral region provided around the display region. An electric field is also applied to the liquid crystal layer in the peripheral region. Therefore, when the liquid crystal panel displays a white solid image, there is a problem that light leakage occurs that unintended light is generated from the peripheral area.

  As a method for preventing this light leakage, there is a method of shielding the electric field on the array wiring side that generates the electric field. This method is effective for an IPS (In Plane Switching) mode liquid crystal panel in which an electric field is not generated between two opposing substrates. However, it is not effective for a device in which an electric field is generated between two opposing substrates, such as a TN mode or VA mode liquid crystal panel.

  Further, in order to shield the electric field on the array wiring side, it is necessary to separately form a shield layer via an insulating film above the wiring. When the shield layer is formed, new problems such as an increase in cost due to an increase in processes and generation of constraints in design occur.

  In the related art B described above, the light shielding layer (black matrix) in the peripheral region provided in the IPS mode liquid crystal display device has an OD value that realizes sufficient light shielding properties, and has a high ratio. Has resistance. Accordingly, the color filter substrate of the IPS liquid crystal display device in the related art B has a sufficient light shielding property. However, the related art B is not a technique for solving the problem of light leakage in the peripheral region in a configuration in which the backlight emits high-luminance light to the TN mode or VA mode liquid crystal panel.

  Related technology B is not a technology for solving the problem of light leakage due to driving of liquid crystal in the peripheral region, particularly the wiring region. The wiring region is a region where an electric field is applied and the liquid crystal is driven. For example, the wiring area is an area near the connection wiring (signal lead-out wiring) and the inspection circuit wiring.

  Therefore, since the liquid crystal panel 100 (liquid crystal display device 500) of the present embodiment is configured as described above, the above problems can be solved.

<Embodiment 2>
In the first embodiment, the black matrix 22 is used to increase the thickness of the BM in the peripheral region R20. The configuration of the present embodiment is a configuration (hereinafter also referred to as “deformation configuration A”) in which a color material is used to increase the thickness of the BM in the peripheral region R20. Hereinafter, the liquid crystal panel 100 to which the modified configuration A is applied is also referred to as a “liquid crystal panel 100A”.

  FIG. 9 is a cross-sectional view showing a configuration of a liquid crystal panel 100A according to Embodiment 2 of the present invention. FIG. 9 shows the configuration of the liquid crystal panel 100A at the same position where the configuration of FIG. 5 is provided. That is, FIG. 9 is a cross-sectional view of the liquid crystal panel 100A to which the modified configuration A is applied, taken along line B1-B2 of FIG. That is, FIG. 9 shows a partial configuration of the liquid crystal panel 100A in the wiring region R20w.

  The liquid crystal panel 100A is different from the liquid crystal panel 100 of FIG. 5 in that a substrate 120A is provided instead of the substrate 120. Since the other configuration of liquid crystal panel 100A is the same as that of liquid crystal panel 100, detailed description will not be repeated.

  The substrate 120A is different from the substrate 120 of FIG. 5 in that it includes a color material 7A instead of the black matrix 22. Since the other configuration of substrate 120A is the same as that of substrate 120, detailed description will not be repeated.

  The color material 7A is a color material composed of the same material as that constituting the color material 7. That is, the color material 7A is a light amount reducing member that absorbs part of the light when the color material 7A is irradiated with light.

  Referring to FIG. 9, the black matrix 20 (peripheral region BM) provided in the peripheral BM region includes only the black matrix 21. Further, according to the configuration of FIG. 9, the color material 7A (light quantity reducing member) is provided in the above-described peripheral BM region of the peripheral region R20 in plan view (XY plane). That is, the color material 7A (light quantity reducing member) is provided on the peripheral region BM.

  The color material 7A is composed of a single layer. The color material 7A is composed of, for example, the color material 7B having the lowest transmittance among the color materials 7R, 7G, and 7B. Note that the color material 7A in FIG. 9 may be configured by the color material 7R or the color material 7G described above.

  9, the thickness of the liquid crystal layer 30 existing in the peripheral BM region is smaller than the thickness of the liquid crystal layer 30 existing in the display BM region, as in the first embodiment. Thereby, the gap between the substrate 110 and the substrate 120A in the peripheral region R20 can be narrowed. Therefore, the retardation value of the liquid crystal layer 30 existing in the peripheral BM region can be made smaller than the retardation value of the liquid crystal layer 30 existing in the display BM region. Therefore, the transmittance of the liquid crystal layer 30 existing in the peripheral BM region can be made smaller than the transmittance of the liquid crystal layer 30 existing in the display BM region.

  Note that the color material 7A in the modified configuration A may be composed of a plurality of layers as shown in FIG. The plurality of layers are a plurality of color materials having different wavelength dependencies of transmitted light. In other words, the color material 7A is configured by stacking two or more kinds of color materials having high transmittance and having almost no overlapping wavelength regions. In the following, the configuration of FIG. 10 is also referred to as “deformed configuration A1”.

  Specifically, in the modified configuration A1 of FIG. 10, the color material 7A is configured by stacking color materials 7a and 7b showing different colors. The color material 7a is, for example, the color material 7B. The color material 7b is, for example, a color material 7G. Thereby, in modification structure A1, light-shielding performance can be improved rather than the case where 7 A of color materials are comprised by a single layer. Therefore, in the modified configuration A1, the occurrence of light leakage in the peripheral region R20, particularly the wiring region R20w, can be sufficiently suppressed.

  In the configuration of FIG. 10, the number of color materials constituting the color material 7 </ b> A is not limited to 2 and may be 3 or more.

  Each color material (each layer) constituting the color material 7A is generated by a method adapted to the light shielding performance required for the peripheral region R20. For example, each color material constituting the color material 7A is generated using a halftone exposure technique using a halftone mask. Further, for example, only a part of each color material constituting the color material 7A may be generated using a halftone exposure technique. For example, each color material constituting the color material 7A may be generated without using the halftone exposure technique.

  10, the thickness of the liquid crystal layer 30 present in the peripheral BM region is smaller than the thickness of the liquid crystal layer 30 present in the display BM region, as in the configuration of FIG. 9. Therefore, the transmittance of the liquid crystal layer 30 present in the peripheral BM region can be made smaller than the transmittance of the liquid crystal layer 30 present in the display BM region.

  Further, as shown in FIG. 11, the thickness of the color material 7A in the modified configuration A may be configured to be larger than the thickness of the color material 7A in FIG. In FIG. 11, in order to make the configuration easy to understand, the color material 7 that does not exist in the wiring region R20w (the color materials 7R, 7G, and 7B in the display region R10) is illustrated. In the following, the configuration of FIG. 11 is also referred to as “deformed configuration A2”.

  The thickness of the color material 7A in FIG. 11 is set using a halftone exposure technique using a halftone mask. Also in the modified configuration A2 of FIG. 11, the same effect as that of the modified configuration A1 of FIG. 10 is obtained.

  Also in the modified configuration A2 of FIG. 11, the thickness of the liquid crystal layer 30 existing in the peripheral BM region is smaller than the thickness of the liquid crystal layer 30 existing in the display BM region, as in the configuration of FIG. Therefore, the transmittance of the liquid crystal layer 30 present in the peripheral BM region can be made smaller than the transmittance of the liquid crystal layer 30 present in the display BM region.

  9, 10 and 11 may be configured such that the color material 7A is provided only in the peripheral liquid crystal region R2c or only in the peripheral liquid crystal region R2cw.

  The configuration in FIG. 12 (hereinafter, also referred to as “modified configuration Ax”) is a configuration in which the color material 7A having the configuration in FIG. 9 is provided only in the peripheral liquid crystal region R2c as an example. In addition, the configuration in FIG. 13 (hereinafter, also referred to as “modified configuration A1x”) is, for example, a configuration in which the color material 7A having the configuration in FIG. 10 is provided only in the peripheral liquid crystal region R2c. In addition, the configuration in FIG. 14 (hereinafter, also referred to as “modified configuration A2x”) is, for example, a configuration in which the color material 7A having the configuration in FIG. 11 is provided only in the peripheral liquid crystal region R2c.

  According to the modified configuration Ax in FIG. 12, the gap length d21b is larger than the gap length d21a. The gap length d21b is a distance between a portion of the substrate 120A existing in a region other than the peripheral liquid crystal region R2c and the substrate 110 in the modified configuration Ax. The gap length d21a is the distance between the substrate 120A and the substrate 110 in the configuration of FIG.

  Further, according to the modified configuration A1x of FIG. 13, the gap length d22b is larger than the gap length d22a. The gap length d22b is a distance between a portion of the substrate 120A existing in a region other than the peripheral liquid crystal region R2c and the substrate 110 in the modified configuration A1x. The gap length d22a is the distance between the substrate 120A and the substrate 110 in the modified configuration A1 of FIG.

  Further, according to the modified configuration A2x of FIG. 14, the gap length d23b is larger than the gap length d23a. The gap length d23b is the distance between the substrate 110 and the portion of the substrate 120A existing in the region other than the peripheral liquid crystal region R2c in the modified configuration A2x. The gap length d23a is the distance between the substrate 120A and the substrate 110 in the modified configuration A2 of FIG.

  According to the configurations of FIGS. 12, 13, and 14, the same effect as that of the modified configuration X1a of FIG. 8 of the first embodiment can be obtained. That is, the sealing material SL1 can be stably formed.

  In the present embodiment, the color material 7 </ b> A, which is a light amount reducing member, is a color material made of the same material as that constituting the color material 7. Therefore, the color material 7A can be formed simultaneously with the color material 7 in the display region R10. Therefore, the color material 7A can be formed at a low cost.

  Further, the color material 7A may be composed of a plurality of layers as in the modified configuration A1 of FIG. In other words, as described above, in the color material 7A, the plurality of layers are a plurality of color materials having different wavelength dependencies of transmitted light. That is, the color material 7A is configured by stacking two kinds of color materials whose wavelength regions hardly overlap each other. Thereby, the color material 7A can function as a light shielding member having a high light shielding effect.

  Further, since the color material 7A that is a light amount reducing member is thick, the thickness of the liquid crystal layer 30 in the peripheral region R20 (peripheral BM region) is reduced. Therefore, the transmittance of the liquid crystal layer 30 can be lowered. Thereby, the effect of suppressing or preventing light leakage from the peripheral region R20 (peripheral BM region) is also obtained.

<Embodiment 3>
The configuration of the present embodiment is a configuration in which the black matrix in the peripheral BM region is generated from a material having a high OD (Optical Density) value that is an optical density (hereinafter also referred to as “deformed configuration B”). Hereinafter, the liquid crystal panel 100 to which the modified configuration B is applied is also referred to as a “liquid crystal panel 100B”.

  FIG. 15 is a cross-sectional view showing a configuration of a liquid crystal panel 100B according to Embodiment 3 of the present invention. FIG. 15 shows the configuration of the liquid crystal panel 100B at the same position where the configuration of FIG. 5 is provided. That is, FIG. 15 is a cross-sectional view of the liquid crystal panel 100B to which the modified configuration B is applied, taken along the line B1-B2 of FIG. That is, FIG. 15 shows a partial configuration of the liquid crystal panel 100B in the wiring region R20w.

  The liquid crystal panel 100B is different from the liquid crystal panel 100 of FIG. 5 in that a substrate 120B is provided instead of the substrate 120. Since the other configuration of liquid crystal panel 100B is the same as that of liquid crystal panel 100, detailed description will not be repeated.

  The substrate 120B is different from the substrate 120 of FIG. 5 in that it does not include the color material 7A and that the black matrix 20 is configured only by the black matrix 20d. Since the other configuration of substrate 120B is the same as that of substrate 120, detailed description will not be repeated.

  In the modified configuration B, the black matrix 20 (peripheral region BM) provided in the peripheral BM region is configured by only the black matrix 20d. That is, the black matrix 20d is provided in the wiring region R20w (peripheral BM region).

  In the modified configuration B, the black matrix 20 (display region BM) provided in the display region R <b> 10 includes only the black matrix 21. That is, the black matrix 21 is provided in the display region R10. As will be described later, the black matrix 20 provided in the display region R10 may also be configured by only the black matrix 20d.

  The black matrix 20 d is made of a material having an optical density (OD value) higher than that of the black matrix 21. That is, the optical density (OD value) of the black matrix 20d provided in the peripheral BM region is larger than the optical density (OD value) of the black matrix 21 provided in the display region R10. Thereby, similarly to the first embodiment, the occurrence of light leakage in the peripheral region R20, particularly the wiring region R20w, can be suppressed or prevented.

  The black matrix 20 provided in the display region R10 may also be configured only by the black matrix 20d (hereinafter also referred to as “modified configuration Ba”). In the modified configuration Ba, the black matrix 20 provided over the display region R10 and the peripheral region R20 is configured by only the black matrix 20d. Thereby, the black matrix provided in the liquid crystal panel 100B can be generated in one step. Therefore, an increase in the number of steps for manufacturing a liquid crystal panel can be suppressed. Furthermore, the black matrix 20d is generated without using an expensive halftone mask. Therefore, it is possible to reduce the cost in manufacturing the liquid crystal panel.

  In the modified configuration Ba, the thickness of the black matrix 20d in the peripheral region R20 may be larger than the thickness of the black matrix 20d in the display region R10. With this configuration, the thickness of the black matrix 20d is as follows. That is, the thickness of the black matrix 20d provided in the peripheral BM region is larger than the thickness of the black matrix 20d provided in the display region R10. Therefore, the thickness of the liquid crystal layer 30 is as follows. That is, the thickness of the liquid crystal layer 30 existing in the peripheral BM region is smaller than the thickness of the liquid crystal layer 30 existing in the display BM region. Therefore, as in the first embodiment, the transmittance of the liquid crystal layer 30 existing in the peripheral BM region can be made smaller than the transmittance of the liquid crystal layer 30 existing in the display BM region.

  In the present embodiment, by adjusting the optical density (OD value) constituting the black matrix 20d, it is possible to effectively reduce the amount of light related to light leakage only in a desired region (peripheral BM region). .

<Embodiment 4>
The configuration of the present embodiment is a configuration using a retardation film (hereinafter also referred to as “deformed configuration C”). Hereinafter, the liquid crystal panel 100 to which the modified configuration C is applied is also referred to as a “liquid crystal panel 100C”.

  FIG. 16 is a cross-sectional view showing a configuration of a liquid crystal panel 100C according to Embodiment 4 of the present invention. FIG. 16 shows the configuration of the liquid crystal panel 100C at the same position where the configuration of FIG. 5 is provided. That is, FIG. 16 is a cross-sectional view of the liquid crystal panel 100C to which the modified configuration C is applied, taken along line B1-B2 of FIG. That is, FIG. 16 shows a partial configuration of the liquid crystal panel 100C in the wiring region R20w.

  The liquid crystal panel 100 </ b> C is different from the liquid crystal panel 100 of FIG. 5 in that a substrate 120 </ b> C is provided instead of the substrate 120. Since the other configuration of liquid crystal panel 100C is the same as that of liquid crystal panel 100, detailed description will not be repeated.

  The substrate 120C is different from the substrate 120 in FIG. 5 in that the substrate 120C further includes a retardation film 13. Since the other configuration of substrate 120A is the same as that of substrate 120, detailed description will not be repeated. Referring to FIG. 16, the black matrix 20 (peripheral region BM) provided in the peripheral BM region includes only the black matrix 21.

  The retardation film 13 is provided on the black matrix 21 provided in the peripheral BM region. Although the details of the retardation film 13 will be described later, the retardation film 13 is set so that the light transmittance of the peripheral BM region is smaller than the light transmittance of the peripheral region BM provided in the display region R10. It is configured to change the phase of light passing therethrough.

  The phase difference film 13 is a film that generates a phase difference between two types of polarized light whose vibration directions are orthogonal to each other. The two types of polarized light are light generated when light passes through the retardation film 13. The retardation film 13 has a slow axis and a fast axis.

  In the modified configuration C, the polarizing plate 51 of the substrate 110 is provided so that the absorption axis of the polarizing plate 51 is orthogonal to the absorption axis of the polarizing plate 52 of the substrate 120C in plan view (XY plane).

  In the modified configuration C, the retardation film 13 exists between the polarizing plate 51 and the polarizing plate 52. Therefore, when the light that has passed through the polarizing plate 51 and the liquid crystal layer 30 passes through the retardation film 13, the phase of the light (polarized light) changes. The light emitted from the retardation film 13 toward the Z direction enters the polarizing plate 52. Therefore, when the vibration direction of the light incident on the polarizing plate 52 is a direction along the transmission axis of the polarizing plate 52, the light is emitted from the polarizing plate 52. Therefore, the intensity of light emitted from the polarizing plate 52 changes by changing the characteristics of the retardation film 13.

  Therefore, the phase difference film 13 is configured to generate a phase difference that is not visible to humans with respect to the light emitted from the phase difference film 13 and irradiated to the polarizing plate 52. The For example, the retardation film 13 is configured to have the same function as that of a λ / 2 plate or a λ / 4 plate. For example, a λ / 2 plate is a plate that generates a phase difference of 180 degrees between two types of polarized light whose vibration directions are orthogonal to each other.

  When the retardation film 13 is configured to have the same function as the λ / 2 plate, the retardation axis of the retardation film 13 is set to both the absorption axis of the polarizing plate 51 and the absorption axis of the polarizing plate 52. It is set not to overlap. A plurality of retardation films 13 set in this manner may be stacked. In this configuration, the delay axis of each retardation film 13 is set so as not to overlap both the absorption axis of the polarizing plate 51 and the absorption axis of the polarizing plate 52.

  When the retardation film 13 is configured to have the same function as that of the λ / 4 plate, the retardation film 13 has a function of generating elliptically polarized light. Therefore, when the retardation film 13 is configured to have the same function as that of the λ / 4 plate, the retardation axis of the retardation film 13 is the absorption axis of the polarizing plate 51 and the absorption axis of the polarizing plate 52. It is set not to overlap both. In the case of this configuration, it is not necessary to have a configuration in which the plurality of retardation films 13 are stacked as described above.

  As described above, by setting the retardation film 13, for example, even when the liquid crystal panel 100 </ b> C displays a white solid image, occurrence of light leakage in the wiring region R <b> 20 w can be suppressed.

  Even if the absorption axis of the polarizing plate 51 and the absorption axis of the polarizing plate 52 are not orthogonal to each other, by changing the arrangement angle (phase difference value) of the retardation axis of the retardation film 13, the same as above. The effect is obtained.

  Further, in the modified configuration C, the gap length can be reduced by the thickness of the retardation film 13. Specifically, in the modified configuration C, the thickness of the liquid crystal layer 30 present in the peripheral BM region is smaller than the thickness of the liquid crystal layer 30 present in the display BM region in plan view (XY plane). Thereby, the gap between the substrate 110 and the substrate 120C in the peripheral region R20 can be narrowed. Therefore, the retardation value of the liquid crystal layer 30 existing in the peripheral BM region can be made smaller than the retardation value of the liquid crystal layer 30 existing in the display BM region. Therefore, the transmittance of the liquid crystal layer 30 existing in the peripheral BM region can be made smaller than the transmittance of the liquid crystal layer 30 existing in the display BM region.

  The modified configuration C may be a configuration in which the retardation film 13 is provided only in the peripheral liquid crystal region R2c as shown in FIG. Further, the modified configuration C may be a configuration in which the retardation film 13 is provided only in the peripheral liquid crystal region R2cw.

  According to the configuration of FIG. 17 (hereinafter, also referred to as “modified configuration Cx”), the gap length d3b is larger than the gap length d3a. The gap length d3b is a distance between a portion of the substrate 120C existing in a region other than the peripheral liquid crystal region R2c and the substrate 110 in the modified configuration Cx of FIG. The gap length d3a is the distance between the substrate 120C and the substrate 110 in the configuration of FIG. That is, in the modified configuration Cx of FIG. 17, the gap of the region for forming the sealing material SL1 is not reduced. Therefore, in the deformed configuration Cx, the seal material SL1 can be formed more stably than in the configuration of FIG.

  Further, according to the present embodiment, for example, even when the liquid crystal panel 100C displays a white solid image, the transmittance of the peripheral BM region can be lowered.

  Further, according to the present embodiment, the retardation film 13 is arranged in such a manner that the light transmittance of the peripheral BM region is smaller than the light transmittance of the peripheral region BM provided in the display region R10. The phase of light passing through the phase difference film 13 is changed. Therefore, when the liquid crystal panel 100C displays a white solid image, the light transmittance of the peripheral BM region can be lowered by the action of the liquid crystal layer 30 and the retardation film 13. Therefore, it is possible to effectively reduce the amount of light related to light leakage in the peripheral region R20 (peripheral BM region).

<Embodiment 5>
The configuration of the present embodiment is a configuration in which the liquid crystal layer 30 is not provided in the peripheral region R20 (hereinafter also referred to as “modified configuration D”). Hereinafter, the liquid crystal panel 100 to which the modified configuration D is applied is also referred to as “liquid crystal panel 100D”.

  FIG. 18 is a plan view showing a configuration of a liquid crystal panel 100D according to Embodiment 5 of the present invention. FIG. 19 is a cross-sectional view showing a configuration of a liquid crystal panel 100D according to Embodiment 5 of the present invention. Specifically, FIG. 19 is a cross-sectional view of the liquid crystal panel 100D taken along line C1-C2 of FIG. In FIG. 19, in order to make the configuration easy to see, a portion parallel to the XZ plane is not shown in a spacer SP2 described later.

  The liquid crystal panel 100D is different from the liquid crystal panel 100 of FIG. 5 in that it further includes a spacer SP2. Since the other configuration of liquid crystal panel 100D is the same as that of liquid crystal panel 100, detailed description will not be repeated.

  In the modified configuration D, the black matrix 20 provided in the display region R10 and the peripheral BM region (peripheral region R20) is configured by only the black matrix 21.

  The spacer SP2 is provided between the substrate 110 and the substrate 120. As described above, each spacer SP1 is provided in the display region R10. The spacer SP2 is preferably made of the same material as that of the spacer SP1 under the following premise A. The premise A is a premise that the spacer SP1 provided in the display region R10 is a columnar spacer formed by patterning the organic resin film. When the spacer SP2 is formed of the same material as that of the spacer SP1, the spacer SP2 and the spacer SP1 can be formed by patterning a common organic resin film. Therefore, the spacer SP2 and the spacer SP1 can be formed at a low cost without adding a new process. The spacer SP2 may be formed on either the substrate 110 or the substrate 120. The shape of the spacer SP2 is, for example, a columnar shape.

  Referring to FIGS. 18 and 19, the shape of spacer SP2 in a plan view (XY plane) is a closed loop shape (frame shape). In a plan view (XY plane), the spacer SP2 is provided at the boundary between the display region R10 and the peripheral region R20. Further, in a plan view (XY plane), the spacer SP2 is provided at a boundary portion between the peripheral BM region of the peripheral region R20 and the display region R10.

  In plan view (XY plane), the liquid crystal layer 30 is not provided in the peripheral BM region of the peripheral region R20 but is provided in the display region R10.

  The spacer SP2 is formed on the peripheral edge (end) of the display region R10 in the step of forming the spacer. Then, the liquid crystal is arranged (dropped) only in the display region R10 by the dropping injection method so that the liquid crystal does not enter the peripheral region R20 (peripheral BM region). At this time, the spacer SP2 functions as a bank.

  Next, the spacer SP2 is sandwiched between the substrate 110 and the substrate 120. The substrate 110 and the substrate 120 are bonded to each other by the seal material SL1. Next, normal processes (cutting, cleaning, attaching a polarizing plate, IC mounting, backlight assembly) and the like are performed. Thereby, the liquid crystal panel 100D is manufactured.

  In the liquid crystal panel 100D to which the modified configuration D is applied, the liquid crystal layer 30 does not exist in the peripheral region R20 (peripheral BM region) having the wiring region R20w. Therefore, even when an electric field is applied to the liquid crystal layer 30, no light leakage occurs in the peripheral region R20 (peripheral BM region).

  This is because, as described above, the absorption axis of the polarizing plate 51 is orthogonal to the absorption axis of the polarizing plate 52, and glass, air, and the spacer SP2 exist in the space between the polarizing plate 51 and the polarizing plate 52. It is to do. The glass and air do not change the phase of light passing through the glass and air.

  The spacer SP2 may be configured by a black matrix, a color material, or the like, or may be configured by stacking them.

  In the present embodiment, as described above, the liquid crystal layer 30 does not exist in the peripheral region R20 (peripheral BM region) having the wiring region R20w. Therefore, it is possible to prevent the occurrence of a light phase difference caused by the change in the orientation of the liquid crystal in the peripheral region R20 (wiring region R20w). Thereby, the light shielding property of the peripheral region R20 (wiring region R20w) can be improved.

<Embodiment 6>
The configuration of the present embodiment is another configuration in which the liquid crystal layer 30 is not provided in the peripheral region R20 (hereinafter, also referred to as “modified configuration E”). Hereinafter, the liquid crystal panel 100 to which the modified configuration E is applied is also referred to as “liquid crystal panel 100E”.

  FIG. 20 is a plan view showing a configuration of a liquid crystal panel 100E according to Embodiment 6 of the present invention. FIG. 21 is a cross-sectional view showing a configuration of a liquid crystal panel 100E according to Embodiment 6 of the present invention. Specifically, FIG. 21 is a cross-sectional view of the liquid crystal panel 100E along the line D1-D2 of FIG. In FIG. 21, in order to make the configuration easy to see, a portion parallel to the XZ plane is not shown in a later-described sealing material SL2.

  The liquid crystal panel 100E is different from the liquid crystal panel 100D of FIG. 19 in that a sealing material SL2 is provided instead of the spacer SP2. Since the other configuration of liquid crystal panel 100E is the same as that of liquid crystal panel 100D, detailed description will not be repeated.

  The sealing material SL2 is provided between the substrate 110 and the substrate 120. The sealing material SL2 is made of the same material as that constituting the sealing material SL1.

  Referring to FIGS. 20 and 21, the shape of sealing material SL2 in a plan view (XY plane) is a closed loop shape (frame shape). In plan view (XY plane), the sealing material SL2 is provided at the boundary between the display region R10 and the peripheral region R20. Further, in plan view (XY plane), the sealing material SL2 is provided at a boundary portion between the peripheral BM region of the peripheral region R20 and the display region R10.

  In plan view (XY plane), the liquid crystal layer 30 is not provided in the peripheral BM region of the peripheral region R20 but is provided in the display region R10.

  In the liquid crystal panel 100E to which the modified configuration E is applied, the liquid crystal layer 30 does not exist in the peripheral region R20 (peripheral BM region). Therefore, even when an electric field is applied to the liquid crystal layer 30, no light leakage occurs in the peripheral region R20 (peripheral BM region).

  This is because, as described above, the absorption axis of the polarizing plate 51 is orthogonal to the absorption axis of the polarizing plate 52, and in the space between the polarizing plate 51 and the polarizing plate 52, glass, air, and the sealing material SL2 are present. This is because it exists.

  In the present embodiment, as described above, the liquid crystal layer 30 does not exist in the peripheral region R20 (peripheral BM region) having the wiring region R20w. Therefore, it is possible to prevent the occurrence of a light phase difference caused by the change in the orientation of the liquid crystal in the peripheral region R20 (wiring region R20w). Thereby, the light shielding property of the peripheral region R20 (wiring region R20w) can be improved.

  In this embodiment, since the sealant SL2 is further added between the substrate 110 and the substrate 120, the strength with which the substrate 110 and the substrate 120 are in close contact with each other can be improved.

(Manufacture of liquid crystal display devices)
Next, a method for manufacturing the liquid crystal display device of each of the above embodiments will be described. Here, as an example, a method for manufacturing liquid crystal panel 100, which is a main part of liquid crystal display device 500 according to Embodiment 1, will be mainly described with reference to the flowchart of FIG.

  The liquid crystal panel is usually manufactured by using one or more substrates cut out from a mother substrate larger than the final size of the liquid crystal panel. The process up to the middle of steps S1 to S9 and step S10 in FIG. 22 is a process performed on the mother substrate.

  First, in the substrate preparation process, the substrates 110 and 120 are prepared in a mother substrate state. Since the manufacturing process of the substrates 110 and 120 may be a general process, it will be briefly described.

  In the manufacture of the substrate 110, first, each switching element SW1, wiring W1, pixel electrode 113, terminal 116, transfer electrode (not shown), etc. are formed on one surface of the glass substrate 111. As described above, the wiring W1 is the inspection wiring 119, the wiring constituting the inspection circuit, the connection wiring, and the like. These are formed by repeatedly performing pattern formation processes such as film formation, patterning by photolithography, and etching.

  Further, the substrate 120 is formed by the same process as the substrate 110. Thereby, each color material 7, the black matrix 20, the common electrode 123, and the like are formed on one surface of the glass substrate 121. Note that the spacer SP1 is further formed on one surface of the glass substrate 121 by patterning the organic resin film.

  Since the manufacturing method of the black matrix 20 has been specifically described in the first to third embodiments, detailed description thereof will be omitted.

  Further, the color material 7A of the second embodiment is made of the same material as the material constituting the color material 7 of the display region R10 as described above. The single-layer color material 7A provided on the peripheral region BM is formed simultaneously with the patterning of the color material (color resist) constituting the substrate 120. The color material 7A composed of a plurality of layers is also formed by the same method as described above.

  The color material 7A formed of a single layer or a plurality of layers can be formed by changing only the planar pattern design. Therefore, the color material 7A composed of a single layer or a plurality of layers can be easily formed by extension of a conventional method for manufacturing a color substrate.

  Further, the spacer SP2 (bank) according to the fifth embodiment may be formed by patterning the organic resin film simultaneously with the formation of the spacer SP1 in the display region R10 in the step of forming the substrate 120.

  First, in the substrate cleaning process in step S1, the substrate 110 on which the wiring W1 is formed is cleaned. As described above, the wiring W1 is the inspection wiring 119, the wiring constituting the inspection circuit, the connection wiring, or the like.

  Next, in the alignment film material application process in step S <b> 2, the alignment film material is applied to one surface of the substrate 110. Subsequently, the applied alignment film material is baked and dried using a hot plate or the like.

  Next, in the alignment process step of step S3, the alignment process is performed on the alignment film material. The alignment treatment is, for example, a rubbing treatment that forms fine grooves, scratches, and the like along a specific direction on the surface of the alignment film material. Thereby, the alignment film 112 is formed. Note that the alignment process performed on the alignment film 112 is not limited to the rubbing process, and may be a known alignment process such as an optical alignment process.

  Also, steps S1, S2, and S3 are performed on the substrate 120 on which the common electrode 123 and the like are formed in the same manner as described above. Thereby, the alignment film 122 is formed.

  In more detail, the spacer SP1 formed on the substrate 120 is also covered with the alignment film 122. However, the alignment film 122 is sufficiently thinner than the spacer SP1. Therefore, in the drawing, the alignment film applied on the spacer SP1 is not shown.

  Next, in step S4, the height of the spacer SP1 is measured. In the first embodiment, the spacer SP1 is formed on the substrate 120. Therefore, the initial height of the spacer SP1 on the substrate 120 may be measured.

  The measurement of the height of the spacer SP1 will be described again later, but is performed in order to determine the amount of liquid crystal dropped in the step of injecting liquid crystal by the drop injection (ODF) method. Accordingly, the height of the spacer SP1 is measured in order to determine the cell gap related to the volume of the space filling the liquid crystal. When a dual spacer structure is used, the height of the main spacer is measured.

  Next, in the sealing material application process in step S <b> 5, the screen printing apparatus applies the sealing material to the main surface of the substrate 110 or the substrate 120. The sealing material is a member including resin beads that are elastically deformed. The sealing material is applied so as to surround the display area of the liquid crystal panel. Thereby, sealing material SL1 is formed.

  Further, the sealing material SL2 of Embodiment 5 is formed simultaneously with the formation of the sealing material SL1 in this sealing material application step.

  Note that a sealing material containing conductive particles for forming the sealing material SL1 may be applied to the main surface of the substrate 110 or the substrate 120. Specifically, a sealing material containing conductive particles may be applied to a region of the main surface of the substrate 110 or the substrate 120 where the transfer electrode on the substrate 110 and the common electrode 123 of the substrate 120 overlap. Thereby, a conduction function can be provided between the substrates 110 and 120.

  Alternatively, a transfer material may be separately applied to a region where the transfer electrode and the common electrode 123 overlap. The transfer material is made of a resin paste containing conductive particles. In the said structure, a transfer material application | coating process is performed after said step S5. The transfer material application step is a step of applying the transfer material to the main surface of the substrate 110 or the substrate 120 as described above.

  In Embodiment 1, the shape of the spacer SP1 that defines the distance between the substrate 110 and the substrate 120 is a columnar shape, but is not limited to this. The spacer SP1 may have a spherical shape. In this configuration, spherical spacers are dispersed on one surface of the substrate 110 or the substrate 120. In this case, similarly to the transfer material application process described above, a spacer spraying process is performed after step S5.

  Next, in the liquid crystal dropping process of step S6, the liquid crystal is dropped into the space formed by the sealing material SL1 of the substrate on which the sealing material SL1 is formed. The amount of the liquid crystal dropped is determined based on the height of the spacer SP1 measured in step S4.

  Next, in the bonding process of step S7, the substrates 110 and 120 in the state of the mother substrate are bonded together in a vacuum state. Thereby, a mother cell substrate is formed.

  Next, in the ultraviolet irradiation process of step S8, the mother cell substrate is irradiated with ultraviolet rays. Thereby, sealing material SL1 is hardened to some extent.

  Thereafter, in step S9, after-curing for heating is performed. Thereby, the sealing material SL1 is completely cured. As a result, a cured sealing material SL1 is obtained.

  Next, in the cell dividing step of step S10, the mother cell substrate is cut along the scribe line. Thereby, the mother cell substrate is divided into a plurality of liquid crystal panels.

  For each liquid crystal panel divided as described above, a polarizing plate attaching process in step S11, a control board mounting process in step S12, and the like are performed. Thereby, the manufacture of the liquid crystal panel 100 of FIG. 1 is completed.

  Further, a backlight unit (not shown) is provided on the back side (non-viewing side) of the substrate 110 of the liquid crystal panel 100 via an optical film such as a retardation plate. Then, peripheral members such as the liquid crystal panel 100 and a backlight unit (not shown) are accommodated in the above-described casing. Thereby, the manufacture of the liquid crystal display device 500 is completed.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

  For example, in some or all of the liquid crystal panels 100, 100A, 100B, 100C, 100D, and 100E, an overcoat layer may be provided on the color filter substrate. The overcoat layer is used for planarizing the entire surface of the color filter substrate. The overcoat layer is made of a transparent resin film. For example, in the liquid crystal panel 100, an overcoat layer may be provided on the substrate 120, which is a color filter substrate, so as to cover the alignment film 122 and the black matrix 20. That is, the overcoat layer is provided so as to cover each color material 7, the alignment film 122, and the black matrix 20 in plan view (XY plane). Thereby, the entire surface of the color filter substrate (substrate 120) is planarized.

  In addition, for example, some or all of the liquid crystal panels 100, 100A, 100B, 100C, 100D, and 100E are not limited to TN mode liquid crystal panels, and may be IPS mode liquid crystal panels, for example. For example, when the liquid crystal panel 100 is an IPS mode liquid crystal panel, the common electrode 123 is not formed on the substrate 120, and a transfer electrode for transmitting a signal to the common electrode 123, a configuration made of a transfer material, and the like are omitted. .

  7, 7a, 7A, 7b, 7B, 7G, 7R Color material, 13 retardation film, 20, 20d, 21, 22 black matrix, 20x pixel forming portion, 30 liquid crystal layer, 100, 100A, 100B, 100C, 100D, 100E, 900 liquid crystal panel, 110, 120, 120A, 120B, 120C substrate, 500 liquid crystal display device, R10 display area, R20 peripheral area, R20w wiring area, SL1, SL2 sealing material, SP1, SP2 spacer, W1 wiring.

Claims (13)

A first substrate having translucency;
A second substrate having translucency and facing the first substrate;
A liquid crystal layer provided between the first substrate and the second substrate,
The second substrate is
A display area for displaying an image in plan view;
In a plan view, it has a peripheral area provided around the display area,
In plan view, the peripheral area has a wiring area,
The wiring region is provided with a wiring for generating an electric field in the liquid crystal layer,
A black matrix made of resin is provided on the side of the second substrate that contacts the liquid crystal layer,
The black matrix is provided in a part of the display area so as to form pixels in the display area of the second substrate,
The black matrix is further provided in a part or all of the peripheral region of the second substrate,
The light transmittance of the 1st area | region which is an area | region in which the said black matrix was provided among the said peripheral areas is smaller than the light transmittance of the said black matrix provided in the said display area. Liquid crystal panel. The display area has a second area that is an area where the black matrix is provided in the display area in plan view;
The liquid crystal panel according to claim 1, wherein a thickness of the liquid crystal layer existing in the first region in plan view is smaller than a thickness of the liquid crystal layer existing in the second region in plan view. In plan view, a light amount reducing member is provided in the first region of the peripheral region,
The liquid crystal panel according to claim 1, wherein the light quantity reducing member is a member that absorbs part or all of the light when the light quantity reducing member is irradiated with light. The liquid crystal panel according to claim 1, wherein an optical density of the black matrix provided in the first area of the peripheral area is greater than an optical density of the black matrix provided in the display area. The liquid crystal panel according to claim 1, wherein a thickness of the black matrix provided in the first region is larger than a thickness of the black matrix provided in the display region. The display area is provided with a color material,
The color material is a member for expressing a color by irradiating the color material with light,
The liquid crystal panel according to claim 3, wherein the light quantity reducing member is another color material made of the same material as that of the color material. The liquid crystal panel according to claim 6, wherein the light amount reducing member that is another color material is configured by stacking at least a first color material and a second color material. A retardation film is provided on the black matrix provided in the first region of the peripheral region,
The retardation film is light that passes through the retardation film so that light transmittance of the first area in the peripheral area is smaller than light transmittance of the black matrix provided in the display area. The liquid crystal panel according to claim 1, configured to change a phase of the liquid crystal panel. The display area is provided with a first spacer for defining the thickness of the liquid crystal layer,
The liquid crystal panel further includes:
A second spacer provided between the first substrate and the second substrate;
In plan view, the second spacer is provided at a boundary portion between the first region and the display region in the peripheral region,
The liquid crystal panel according to claim 1, wherein the liquid crystal layer is provided not in the first area of the peripheral area but in the display area in a plan view. The liquid crystal panel according to claim 9, wherein the second spacer is made of the same material as that of the first spacer. The first substrate and the second substrate are bonded together by a first sealing material,
The liquid crystal panel further includes:
A second sealing material provided between the first substrate and the second substrate;
In plan view, the second sealing material is provided at a boundary portion between the first region and the display region in the peripheral region,
The liquid crystal panel according to claim 1, wherein the liquid crystal layer is provided not in the first area of the peripheral area but in the display area in a plan view. The liquid crystal panel according to claim 11, wherein the second sealing material is made of the same material as that of the first sealing material. A liquid crystal display device comprising the liquid crystal panel according to any one of claims 1 to 12,
The liquid crystal display device displays the image on the display area of the liquid crystal panel using light.

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