Display device with position input function

Abstract

A display device with a position input function includes a plurality of pixel electrodes (11g), a plurality of source wiring lines (11j) that respectively transmit signals supplied to the plurality of pixel electrodes (11g) and are adjacent to the pixel electrodes (11g), a common electrode (11h) that overlaps at least a portion of the plurality of pixel electrodes (11g) via an interlayer insulating film (21), a touch electrode (14) that is divided from the common electrode (11h) and detects an input position of a finger, and a plurality of touch wiring lines (15) that are interposed between the source wiring lines (11j) and the pixel electrodes (11g) and sandwich at least the plurality of pixel electrodes (11g) and the plurality of source wiring lines (11j), and the plurality of source wiring lines (11j) are arranged such that a distance between a pair of source wiring lines that sandwich the pixel electrodes (11g) and the touch wiring lines (15) is wider than a distance between a pair of source wiring lines that sandwich the pixel electrodes (11g).

Description

[0001] This application is a divisional application. The original application has the application number 201880010291.9, the international application number PCT / JP2018 / 004308, the application date is February 8, 2018, and the invention title is "Display device with position input function". Technical Field

[0002] This invention relates to a display device with position input function. Background Technology

[0003] Previously, as an example of a liquid crystal display device that integrates touch panel functionality, the liquid crystal display device described in Patent Document 1 is known. The liquid crystal display device described in Patent Document 1 includes: pixel electrodes that display three colors: red, green, and blue; a plurality of data lines adjacent to each pixel electrode; a plurality of touch electrodes that are self-capacitive; and a plurality of touch lines connected to the plurality of touch electrodes, wherein the area occupied by the blue pixel electrode is smaller than that of each of the green and red pixel electrodes, and the touch lines are arranged adjacent to the blue pixel electrode.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: U.S. Patent Application Publication No. 2016 / 0026291 Summary of the Invention

[0007] The problem the invention aims to solve

[0008] In the liquid crystal display device described in Patent Document 1, the area occupied by the blue pixel electrode is set to be smaller than that of the pixel electrodes of other colors. Therefore, special white balance adjustments are required to correspond to this difference in area, and maximizing transmittance may be difficult. Furthermore, parasitic capacitances generated between the pixel electrodes of each color and adjacent data lines will also differ, potentially leading to a decrease in display quality.

[0009] This invention was made based on the above-described situation, with the aim of suppressing the degradation of display quality.

[0010] Solution for solving the problem

[0011] The display device with position input function of the present invention includes: a plurality of pixel electrodes; a plurality of signal lines that transmit signals supplied to the plurality of pixel electrodes and are arranged adjacent to the pixel electrodes; a plurality of common electrodes that are arranged to overlap the pixel electrodes with at least a portion of them separated by an insulating film; a position detection electrode that is formed by dividing the common electrodes and forms an electrostatic capacitance with a position input body for position input, and detects the input position of the position input body; and a plurality of position detection lines that are at least separated from the common electrodes by the insulating film and are connected to the position detection electrodes through contact holes formed at least in the insulating film. The plurality of position detection lines are arranged between the signal lines and the pixel electrodes and sandwich at least the plurality of pixel electrodes and the plurality of signal lines in between. The plurality of signal lines are configured such that the spacing between a pair of signal lines sandwiching the pixel electrodes and the position detection lines in between is wider than the spacing between a pair of signal lines sandwiching the pixel electrodes in between.

[0012] With this configuration, a potential difference based on a signal transmitted and supplied to the pixel electrode by signal wiring can be generated between the pixel electrode and a common electrode that overlaps with the pixel electrode through an insulating film, and this potential difference is used for display. On the other hand, multiple position detection wires, arranged with at least an insulating film separating them from the common electrode, are connected via contact holes to position detection electrodes formed by dividing the common electrode. The position detection electrodes can form an electrostatic capacitance with the position input body for position input, and the input position of the position input body is detected using the signal supplied by the position detection wires.

[0013] Multiple position detection lines are arranged between signal lines and pixel electrodes, sandwiching both pixel electrodes and signal lines. Therefore, compared to arranging multiple position detection lines adjacent to each pixel electrode individually, this arrangement ensures a wider arrangement space for each pixel electrode, which is advantageous for increasing the aperture ratio. Furthermore, the spacing between a pair of signal lines sandwiching the pixel electrodes and position detection lines is wider than the spacing between a pair of signal lines sandwiching the pixel electrodes but not the position detection lines. This allows pixel electrodes adjacent to and not adjacent to the position detection lines to be of equal size. Consequently, for example, when the display controlled by each pixel electrode presents different colors, white balance adjustment becomes a general adjustment, and the display brightness of each pixel electrode is easily maximized. Moreover, parasitic capacitance generated between each pixel electrode and each signal line is less likely to cause defects. Therefore, display quality degradation is suppressed.

[0014] As an embodiment of the present invention, the following configuration is preferred.

[0015] (1) The device comprises multiple color filters arranged to overlap with the pixel electrodes, each displaying at least blue, green, and red. The position detection wiring is arranged between the pixel electrodes overlapping the color filters displaying specific colors and the signal wiring. Thus, with multiple color filters displaying at least blue, green, and red arranged to overlap with the pixel electrodes, a predetermined color image can be displayed based on signals transmitted by the multiple signal wirings and supplied to the multiple pixel electrodes. However, for pixel electrodes separated from the signal wiring by the position detection wiring and for pixel electrodes not separated from the signal wiring, the parasitic capacitance between the former and the signal wiring may differ from that between the latter and the signal wiring, potentially causing display defects in the former. In this regard, since the pixel electrode, separated from the signal wiring by the position detection wiring, overlaps with the color filter that displays a specific color, even in the event of display defects caused by the aforementioned parasitic capacitance difference, display defects of colors other than the specific color are not easily noticeable. Therefore, by appropriately selecting the aforementioned specific color, the degradation of display quality can be appropriately suppressed.

[0016] (2) The position detection wiring is arranged between the pixel electrode that overlaps with the color filter that displays blue, which is sandwiched among the plurality of pixel electrodes, and the signal wiring. Blue has lower visual recognition than green or red; therefore, by setting the pixel electrode with the position detection wiring between it and the signal wiring as a pixel electrode that overlaps with the color filter that displays blue, even if display defects occur due to the aforementioned parasitic capacitance difference, these defects are less noticeable. Thus, the degradation of display quality is appropriately suppressed.

[0017] (3) The device comprises multiple color filters arranged to overlap with the pixel electrodes, each displaying at least blue, green, and red. Multiple position detection lines are arranged to sandwich a number of pixel electrodes that is multiples of the number of colors in the color filters. This reduces the number of position detection lines compared to a configuration where the number of pixel electrodes sandwiched between the position detection lines is equal to the number of colors in the color filters, thus ensuring a wider arrangement space for the multiple pixel electrodes. Consequently, an improvement in aperture ratio can be achieved.

[0018] (4) The plurality of signal lines are arranged adjacent to the pixel electrodes that are the recipients of the signals, while the plurality of position detection lines are arranged between the signal lines and the pixel electrodes that are not recipients of the signals transmitted by the signal lines. In this way, when a signal is transmitted to the signal lines, since the position detection lines are set to the same potential as the common electrode, the pixel electrodes that are not recipients of the signals transmitted by the signal lines can be shielded from the electric field emitted by the signal lines by the position detection lines that are at the same potential as the common electrode. Therefore, display defects caused by the electric field emitted from the signal lines can be suppressed, and the sum of parasitic capacitances related to the pixel electrodes can be made equal in each pixel electrode, resulting in good display quality.

[0019] (5) The aforementioned position detection wirings and signal wirings are disposed on the same layer as the aforementioned pixel electrode. In this way, the insulating film separating the position detection wirings and signal wirings from the common electrode is the same as the insulating film separating the pixel electrode from the common electrode. Therefore, compared to the case where either the position detection wirings or signal wirings are disposed on the side opposite to the common electrode with a second insulating film separating them from the pixel electrode, the second insulating film is unnecessary, thus reducing the corresponding manufacturing cost.

[0020] (6) The device comprises a plurality of position detection electrodes, wherein a plurality of position detection lines are disposed on the side opposite to the common electrode side, with the pixel electrode separated by a second insulating film, and are selectively connected to the plurality of position detection electrodes through contact holes formed in the insulating film and the second insulating film. In this way, an insulating film and a second insulating film are separated between the common electrode and the position detection lines. Therefore, the parasitic capacitance that may be generated between the position detection lines and the position detection electrodes not connected to them is further reduced, thereby improving the sensitivity of position detection.

[0021] (7) The common electrode has an opening that overlaps with at least a portion of the position detection wiring, and the plurality of signal wirings are disposed on the side opposite to the common electrode side, separated from the pixel electrode by a second insulating film. In this way, the common electrode has an opening that overlaps with at least a portion of the position detection wiring, thus reducing the parasitic capacitance that may occur between the position detection wiring and the position detection electrode not connected to it. Therefore, the position detection sensitivity is good. On the other hand, when a signal is transmitted to the signal wiring, an electric field may be generated between the signal wiring and the opening edge of the opening in the common electrode, thereby inducing light leakage from the vicinity of the opening. In this regard, since an insulating film and a second insulating film are spaced between the common electrode and the signal wiring, the electric field that may occur between the signal wiring and the common electrode is weakened. Therefore, light leakage from the vicinity of the opening due to the signal wiring is less likely to occur.

[0022] (8) The device includes a light-shielding portion that blocks light and has a pixel opening that overlaps with at least a portion of the pixel electrode. It also includes multiple position detection electrodes, and multiple position detection lines are selectively connected to these electrodes via contact holes. A common electrode has an opening that overlaps with at least a portion of the position detection lines. A first opening edge of the opening edge, located on the pixel electrode side relative to the position detection lines, is positioned closer to the position detection lines than a second opening edge located on the opposite side. Because the common electrode has an opening that overlaps with at least a portion of the position detection lines, the parasitic capacitance that may occur between the position detection lines and the position detection electrodes not connected to them is reduced. This results in good position detection sensitivity. However, if a gap exists between the opening edge of the common electrode and the position detection lines when viewed from above, light leakage may occur near the gap due to the electric field generated from the opening edge adjacent to the gap, leading to deterioration of display quality. To prevent light leakage, one could simply increase the formation range of the light-shielding portion, but this might reduce the pixel aperture and decrease the aperture ratio. To address this, the first opening edge of the common electrode's opening edge, located on the pixel electrode side relative to the position detection wiring, is positioned closer to the position detection wiring than the second opening edge, located on the opposite side. Therefore, light leakage is less likely to occur on the pixel electrode side of the position detection wiring. Consequently, the light-shielding portion does not need to be excessively expanded on the pixel electrode side of the position detection wiring, thus ensuring a sufficiently large pixel aperture. This suppresses the decrease in aperture ratio.

[0023] (9) The areas of the pixel electrodes adjacent to the position detection wiring and the areas of the pixel electrodes not adjacent to the position detection wiring are set to be equal. This makes white balance adjustment a general adjustment, for example, when the display controlled by each pixel electrode displays different colors, and the display brightness of each pixel electrode is easily maximized. Furthermore, parasitic capacitance generated between each pixel electrode and each signal wiring is less likely to cause defects. Therefore, a decrease in display quality is suppressed.

[0024] Invention Effects

[0025] According to the present invention, it is possible to suppress the decline in display quality. Attached Figure Description

[0026] Figure 1 This is a top view showing the planar arrangement of the position detection electrodes and position detection wiring of the liquid crystal panel included in the liquid crystal display device according to Embodiment 1 of the present invention.

[0027] Figure 2 This is a top view showing the pixel arrangement of the array substrate that constitutes the liquid crystal panel.

[0028] Figure 3 yes Figure 2 AA-line cross-section diagram.

[0029] Figure 4 yes Figure 2 BB line cross-section diagram.

[0030] Figure 5 This is a top view showing the pixel arrangement of the array substrate constituting the liquid crystal panel according to Embodiment 2 of the present invention.

[0031] Figure 6 yes Figure 5 BB line cross-section diagram.

[0032] Figure 7 This is a top view showing the pixel arrangement of the array substrate constituting the liquid crystal panel according to Embodiment 3 of the present invention.

[0033] Figure 8 yes Figure 7 BB line cross-section diagram.

[0034] Figure 9 This is a top view showing the pixel arrangement of the array substrate constituting the liquid crystal panel according to Embodiment 4 of the present invention.

[0035] Figure 10 yes Figure 9 BB line cross-section diagram.

[0036] Figure 11 It is Figure 9 A magnified top view of the area near the opening.

[0037] Figure 12 This is a top view showing the pixel arrangement of the array substrate constituting the liquid crystal panel according to Embodiment 5 of the present invention.

[0038] Figure 13 yes Figure 12 AA-line cross-section diagram.

[0039] Figure 14 yes Figure 12 BB line cross-section diagram.

[0040] Figure 15 This is a cross-sectional view of the pixel portion of the liquid crystal panel according to Embodiment 6 of the present invention, after being cut off near the center.

[0041] Figure 16 This is a cross-sectional view of the pixel portion of the liquid crystal panel according to Embodiment 7 of the present invention, after being cut off near the center. Detailed Implementation

[0042] <Implementation Method 1>

[0043] according to Figures 1 to 4 This invention will now be described in Embodiment 1. In this embodiment, a liquid crystal display device (display device with position input function) 10 equipped with a touch panel function (position input function) is illustrated. Furthermore, the X-axis, Y-axis, and Z-axis are shown in a portion of each figure, plotted such that the directions of each axis are as shown in the figures. Additionally, [further details will be provided]. Figure 3 and Figure 4 The top side of the figure is designated as the top side, and the bottom side of the figure is designated as the bottom side.

[0044] like Figure 1 As shown, the liquid crystal display device 10 includes at least: a liquid crystal panel (display panel) 11 capable of displaying images; and a backlight device (illumination device), which is an external light source that illuminates the liquid crystal panel 11 with light intended for display. The backlight device includes a light source (e.g., an LED) disposed on the inner side (back side) of the liquid crystal panel 11 and emitting white light, and an optical component that imparts optical effects to the light from the light source, thereby converting it into planar light. Furthermore, the backlight device is not shown in the figures.

[0045] like Figure 1 As shown, in the liquid crystal panel 11, the central portion of the screen is designated as the display area for displaying images (in... Figure 1The area AA is enclosed by a single-dot line, while the outer periphery of the frame surrounding the display area AA is designated as the non-display area NAA, where no image is displayed. In the non-display area NAA of the liquid crystal panel 11, a driver 12 and a flexible substrate 13 are mounted as components for supplying various signals related to display and touch panel functions. The driver 12 includes an LSI chip with internal driving circuitry, mounted in the non-display area NAA of the liquid crystal panel 11 in a COG (Chip On Glass) manner, and processes various signals transmitted from the flexible substrate 13. The flexible substrate 13 is configured such that multiple wiring patterns (not shown) are formed on a substrate made of an insulating and flexible synthetic resin material (e.g., polyimide resin), with one end connected to the non-display area NAA of the liquid crystal panel 11 and the other end connected to a control substrate (signal supply source, not shown). Various signals provided by the control substrate are transmitted to the liquid crystal panel 11 via the flexible substrate 13, processed by the driver 12 in the non-display area NAA, and then output towards the display area AA.

[0046] Detailed description of LCD panel 11. (e.g.) Figure 3 As shown, the liquid crystal panel 11 includes: a pair of substrates 11a and 11b; and a liquid crystal layer (dielectric layer) 11c disposed in the internal space between the two substrates 11a and 11b, containing liquid crystal molecules, which are substances whose optical properties change with the application of an electric field. The liquid crystal layer 11c is sealed by a sealing portion (not shown) located between the two substrates 11a and 11b. The front side of the pair of substrates 11a and 11b is a CF substrate (opposite substrate) 11a, and the back side is an array substrate (active matrix substrate, element substrate) 11b. Both the CF substrate 11a and the array substrate 11b are formed by laminating various films on the inner surface of glass substrates made of glass. In addition, polarizing plates (not shown) are attached to the outer sides of the two substrates 11a and 11b respectively.

[0047] like Figure 2 As shown, on the inner surface of the display area AA of the array substrate 11b (the side opposite to the liquid crystal layer 11c and the CF substrate 11a), multiple TFTs (thin-film transistors, switching elements) 11f and pixel electrodes 11g are arranged in a matrix along the X-axis and Y-axis directions, respectively. Around these TFTs 11f and pixel electrodes 11g, grid-like gate wirings (scan wirings) 11i and source wirings (signal wirings, data wirings) 11j are arranged to surround them. The gate wirings 11i extend approximately straight along the X-axis direction and are positioned relative to the pixel electrodes 11g that are being driven. Figure 2The lower adjacent area is shown. The source electrode wiring 11j extends generally along the Y-axis direction and is disposed relative to the pixel electrode 11g, which is the object to which image signals (signals, data signals) are supplied. Figure 2 The adjacent portion on the left side is shown. More specifically, the portion of the source wiring 11j adjacent to the pixel electrode 11g (the oblique extension 11j1) extends obliquely relative to the X-axis and Y-axis directions, while the portion not adjacent to the pixel electrode 11g (the portion intersecting with the gate wiring 11i, etc.) extends approximately straight along the Y-axis direction. The gate wiring 11i and the source wiring 11j are connected to the gate electrode 11f1 and the source electrode 11f2 of the TFT 11f, respectively, and the pixel electrode 11g is connected to the drain electrode 11f3 of the TFT 11f. Furthermore, the TFT 11f is driven based on various signals supplied to the gate wiring 11i and the source wiring 11j, respectively, and as the TFT 11f is driven, the potential supply to the pixel electrode 11g is controlled. The planar shape of the pixel electrode 11g is set to be a longitudinally elongated, approximately parallelogram. A source wiring 11j is spaced between the pixel electrode 11g and its adjacent pixel electrode 11g in the short side direction (X-axis direction), and a gate wiring 11i is spaced between the pixel electrode 11g and its adjacent pixel electrode 11g in the long side direction (Y-axis direction). The long side of the pixel electrode 11g and the oblique extension 11j1 of the source wiring 11j are parallel.

[0048] like Figure 2 and Figure 4 As shown, on the inner surface of the display area AA of the array substrate 11b, a common electrode 11h is formed overlapping all pixel electrodes 11g on a layer higher than the pixel electrodes 11g (the side closer to the liquid crystal layer 11c). The common electrode 11h is always supplied with a substantially fixed reference potential, extends over substantially the entire area of ​​the display area AA, and has multiple openings formed in the portions overlapping with each pixel electrode 11g (in... Figure 2There are two elongated pixel overlap openings (pixel overlap slits, orientation control slits) 11h1. The pixel overlap openings 11h1 extend along the oblique extension 11j1 (long side of the pixel electrode 11g) of the source wiring 11j. When a potential difference is generated between the overlapping pixel electrodes 11g and the common electrode 11h as the pixel electrode 11g is charged, an edge electric field (oblique electric field) is generated between the opening edge of the pixel overlap opening 11h1 and the pixel electrode 11g. This edge electric field includes components not only along the surface of the array substrate 11b but also components in the normal direction relative to the surface of the array substrate 11b. Therefore, the orientation state of the liquid crystal molecules contained in the liquid crystal layer 11c can be controlled using this edge electric field. In other words, the operating mode of the liquid crystal panel 11 in this embodiment is set to FFS (Fringe Field Switching) mode. Furthermore, in this embodiment, two pixel overlap openings 11h1 are illustrated, but as long as there is at least one pixel overlap opening 11h1, the orientation control function and the display function can be performed. In addition, the extension direction of the pixel overlap opening 11h1 is not limited to one direction. It can be bent into a "く" shape within a single pixel PX, or the pixel overlap opening 11h1 can extend in different directions in adjacent pixel PXs in the Y-axis direction.

[0049] like Figure 4As shown, a color filter 11k displaying three colors—blue (B), green (G), and red (R)—is provided in the display area AA on the inner surface of the CF substrate 11a. Multiple color filters 11k displaying different colors are arranged repeatedly along the gate wiring 11i (X-axis direction), and they extend along the source wiring 11j (generally Y-axis direction), thus the color filters 11k are arranged in a striped pattern. The color filters 11k include: a blue color filter 11kB displaying blue, a green color filter 11kG displaying green, and a red color filter 11kR displaying red. Adjacent color filters 11k displaying different colors in the X-axis direction are configured such that their boundaries (color boundaries) overlap with the source wiring 11j and the light-shielding portion 11l described later. When viewed from above, the color filters 11k overlap with the pixel electrode 11g on the array substrate 11b side, and together with the pixel electrode 11g, constitute the pixel portion PX. More specifically, the blue color filter 11kB, together with the corresponding pixel electrodes 11g, constitutes the blue pixel section BPX; the green color filter 11kG, together with the corresponding pixel electrodes 11g, constitutes the green pixel section GPX; and the red color filter 11kR, together with the corresponding pixel electrodes 11g, constitutes the red pixel section RPX. Furthermore, in this liquid crystal panel 11, the B, G, and R color pixel sections BPX, GPX, and RPX, which are adjacent along the X-axis, constitute display pixels capable of displaying a specified grayscale level. The arrangement spacing of the pixel sections PX in the X-axis direction is, for example, set to a range of 10μm to 30μm.

[0050] like Figure 2 and Figure 4As shown, a light-shielding portion (inter-pixel light-shielding portion, black matrix) 11l is formed in the display area AA on the inner surface of the CF substrate 11a to block light. The planar shape of the light-shielding portion 11l is approximately lattice-shaped to separate adjacent pixel portions PX (pixel electrodes 11g), and a pixel opening 11l1 is provided at a position that largely overlaps with the pixel electrodes 11g on the array substrate 11b side when viewed from above. Multiple pixel openings 11l1 are arranged in a matrix along the X-axis and Y-axis directions within the surface of the CF substrate 11a. The planar shape of the pixel opening 11l1 is designed as a longitudinally elongated approximately parallelogram, mimicking the shape of the pixel electrode 11g, with its short side dimension larger than that of the pixel electrode 11g and its long side dimension slightly smaller than that of the pixel electrode 11g. The pixel opening 11l1 allows light to pass through, thereby enabling display in the pixel portion PX. The light-shielding portion 11l functions to prevent light from flowing between adjacent pixel portions PX, ensuring the independence of the grayscale levels of each pixel portion PX. In particular, it prevents color mixing between pixel portions BPX, GPX, and RPX that display different colors, especially along the portion extending along the source wiring 11j. The light-shielding portion 11l is configured to overlap with the gate wiring 11i and source wiring 11j on the array substrate 11b side when viewed from above. Furthermore, alignment films (not shown) are formed on the innermost surfaces of the two substrates 11a and 11b that are in contact with the liquid crystal layer 11c, respectively, for aligning the liquid crystal molecules contained in the liquid crystal layer 11c. Alternatively, a planarization film may be formed between the alignment film and the color filter 11k.

[0051] The liquid crystal panel 11 in this embodiment combines the function of displaying images and the function of a touch panel (position input function) for detecting the position input by the user based on the displayed image (input position), and integrates (embeds) the touch panel pattern used to perform the touch panel function. This touch panel pattern is configured as a so-called projection-type electrostatic capacitance method, and its detection method is configured as a self-capacitance type. For example... Figure 1As shown, the touch panel pattern is disposed on the array substrate 11b side of one of the pair of substrates 11a and 11b, including a plurality of touch electrodes (position detection electrodes) 14 arranged in a matrix within the surface of the array substrate 11b. The touch electrodes 14 are disposed on the display area AA of the array substrate 11b. Therefore, the display area AA in the liquid crystal panel 11 is approximately the same as the touch area (position input area) where the input position can be detected, and the non-display area NAA is approximately the same as the non-touch area (non-position input area) where the input position cannot be detected. Furthermore, when a user wants to input a position based on the image of the display area AA of the liquid crystal panel 11 and brings a finger (not shown) acting as a conductor close to the surface (display surface) of the liquid crystal panel 11, an electrostatic capacitance is formed between the finger and the touch electrode 14. As a result, the electrostatic capacitance detected by the touch electrode 14 located near the finger changes as the finger approaches, becoming different from that of the touch electrode 14 located away from the finger, and thus the input position can be detected based on this.

[0052] And, as Figure 1As shown, the touch electrode 14 is composed of a common electrode 11h disposed on the array substrate 11b. The common electrode 11h not only has the previously described pixel overlap opening 11h1, but also a separating opening (separating slit) 11h2 that separates adjacent touch electrodes 14. The separating opening 11h2 includes a portion that extends transversely along the X-axis direction and a portion that extends longitudinally along the Y-axis direction, generally appearing as a grid when viewed from above. The common electrode 11h includes a plurality of touch electrodes 14, which are divided into a checkerboard pattern by the separating opening 11h2 and are electrically independent of each other when viewed from above. The touch electrodes 14, separated by the separating opening 11h2, are arranged in a matrix configuration along the X-axis and Y-axis directions in the display area AA. The touch electrodes 14 are square when viewed from above, with one side measuring a few millimeters (e.g., approximately 2-4 mm). Therefore, the touch electrode 14 is much larger than the pixel portion PX (pixel electrode 11g) when viewed from above, and is arranged to span multiple (e.g., tens or hundreds) of pixel portions PX in both the X-axis and Y-axis directions. Multiple touch lines (position detection lines) 15 disposed on the array substrate 11b are selectively connected to the multiple touch electrodes 14. The touch lines 15 extend substantially along the Y-axis in the array substrate 11b in a manner parallel to the source lines 11j, and are selectively connected to specific touch electrodes 14 among the multiple touch electrodes 14 arranged along the Y-axis. Furthermore, the touch lines 15 are connected to a detection circuit (not shown). The detection circuit may be provided in the driver 12, or it may be provided externally to the liquid crystal panel 11 via the flexible substrate 13. The touch lines 15 supply the reference potential signal related to the display function and the touch signal (position detection signal) related to the touch function to the touch electrodes 14 at different timings. The reference potential signal is transmitted to all touch wiring 15 at the same timing, thereby all touch electrodes 14 become reference potentials and function as common electrodes 11h. Furthermore, Figure 1 The arrangement of the touch electrodes 14 is shown schematically. The specific number and configuration of the touch electrodes 14 can be changed as appropriate in addition to the illustration.

[0053] Here, various films stacked and formed on the inner surface of the array substrate 11b will be described. For example... Figure 3As shown, on the array substrate 11b, a first metal film (first conductive film) 16, a gate insulating film 17, a semiconductor film 18, a first transparent electrode film 19, a second metal film (second conductive film) 20, an interlayer insulating film (insulating film) 21, and a second transparent electrode film 22 are sequentially stacked from the lower layer side. The first metal film 16 is configured as a single-layer film comprising one type of metal material or a multilayer film or alloy comprising different types of metal materials, thereby possessing conductivity and light-shielding properties, constituting the gate wiring 11i, the gate electrode 11f1 of the TFT 11f, etc. The gate insulating film 17 comprises silicon nitride (SiN). x Inorganic materials such as silicon dioxide (SiO2) are used to keep the lower-side first metal film 16 insulated from the upper-side semiconductor film 18, first transparent electrode film 19, and second metal film 20. The semiconductor film 18 includes thin films using materials such as oxide semiconductors and amorphous silicon, forming a channel portion (semiconductor portion) 11f4 in the TFT 11f that connects to the source electrode 11f2 and drain electrode 11f3. The first transparent electrode film 19 includes a transparent electrode material (e.g., ITO (Indium Tin Oxide)) and forms a pixel electrode 11g. Similarly to the first metal film 16, the second metal film 20 is configured as a single-layer film including one metal material or a multilayer film or alloy including multiple metal materials, thereby possessing conductivity and light-shielding properties, forming the source wiring 11j and touch wiring 15, or the source electrode 11f2 and drain electrode 11f3 of the TFT 11f. Like the gate insulating film 17, the interlayer insulating film 21 includes silicon nitride (SiN). x Inorganic materials such as silicon dioxide (SiO2) are used to keep the lower semiconductor film 18, the first transparent electrode film 19, and the second metal film 20 in an insulating state from the upper second transparent electrode film 22. The second transparent electrode film 22 and the first transparent electrode film 19 also include transparent electrode materials, forming a common electrode 11h (touch electrode 14), etc.

[0054] Provide a detailed description of the structure of TFT11f and pixel electrode 11g. For example... Figure 2 and Figure 3As shown, TFT 11f has a gate electrode 11f1 branching from gate wiring 11i. Gate electrode 11f1 is formed by the portion of gate wiring 11i that intersects with source wiring 11j protruding along the Y-axis towards the pixel electrode 11g to which it is connected, and is generally square when viewed from above. Gate electrode 11f1 drives TFT 11f based on a scan signal supplied to gate wiring 11i, thereby controlling the current between source electrode 11f2 and drain electrode 11f3. TFT 11f has a source electrode 11f2 formed by the portion of source wiring 11j that overlaps with gate electrode 11f1. Source electrode 11f2 includes a portion of source wiring 11j that extends generally straight along the Y-axis. TFT 11f has a drain electrode 11f3 disposed at a position with an open gap between the source electrodes 11f2. The drain electrode 11f3 is roughly L-shaped when viewed from above. One end of it is opposite to the source electrode 11f2 and connected to the channel portion 11f4, while the other end is connected to the pixel electrode 11g. The other end portion of the drain electrode 11f3, including the second metal film 20, is in direct contact with the pixel electrode 11g, which includes the first transparent electrode film 19 stacked directly below it.

[0055] like Figure 2 and Figure 3 As shown, the pixel electrode 11g includes: a pixel electrode body 11g1 with a generally parallelogram shape, which overlaps with the pixel opening 11l1 of the light-shielding portion 11l; and a contact portion 11g2, which protrudes from the pixel electrode body 11g1 along the Y-axis direction toward the TFT 11f side, wherein the contact portion 11g2 is connected to the drain electrode 11f3. The TFT 11f has a channel portion 11f4, which overlaps with the gate electrode 11f1 through the gate insulating film 17 and is connected to the source electrode 11f2 and the drain electrode 11f3. The channel portion 11f4 extends along the X-axis direction in the form of traversing the gate electrode 11f1, with one end connected to the source electrode 11f2 and the other end connected to the drain electrode 11f3. Furthermore, when the TFT 11f is turned on based on the scan signal supplied to the gate electrode 11f1, the image signal (signal, data signal) supplied to the source wiring 11j is supplied from the source electrode 11f2 to the drain electrode 11f3 via the channel portion 11f4 including the semiconductor film 18, resulting in the pixel electrode 11g being charged.

[0056] Next, the composition of the touch wiring 15 will be described in detail. For example... Figure 2 and Figure 4As shown, the touch wiring 15 includes a second metal film 20, identical to that of the source wiring 11j, and is stacked on the upper side of the interlayer insulating film 21, similar to the first transparent electrode film 19. In other words, the touch wiring 15, the source wiring 11j, and the pixel electrode 11g, including the first transparent electrode film 19, are disposed on the same layer. Therefore, short circuits are avoided by distributing the touch wiring 15 at a distance from the source wiring 11j and the touch wiring 15 in the X-axis direction (the direction intersecting the extension directions of the source wiring 11j and the touch wiring 15). Furthermore, the touch wiring 15, including the light-shielding second metal film 20, is disposed in a manner that does not overlap with the pixel electrode 11g, thereby preventing a sudden decrease in the aperture ratio of the pixel portion PX and avoiding a degradation in display quality due to the parasitic capacitance generated between the pixel electrode 11g and the touch wiring 15. Additionally, the line width of the touch wiring 15 is set to be the same as the line width of the source wiring 11j.

[0057] And, as Figure 2 and Figure 4 As shown, the touch wiring 15 is arranged between the source wiring 11j and the pixel electrode 11g in the X-axis direction, and is intermittently arranged in a manner that sandwiches multiple pixel electrodes 11g and multiple source wirings 11j in between. Specifically, three pixel electrodes 11g and three source wirings 11j, the same number as the number of colors in the color filter 11k, are sandwiched between the intermittently arranged touch wiring 15 in the X-axis direction. The three pixel electrodes 11g sandwiched between a pair of touch wirings 15 respectively constitute the blue pixel portion BPX, the green pixel portion GPX, and the red pixel portion RPX. According to this configuration, compared with the case where multiple touch wirings are arranged in a manner that is adjacent to each of the multiple pixel electrodes 11g, the number of touch wirings 15 and their arrangement space are reduced. Therefore, it is possible to ensure a wider arrangement space for each pixel electrode 11g, which is preferable in terms of improving the aperture ratio of the pixel portion PX.

[0058] like Figure 2 and Figure 3As shown, the touch wiring 15, including the second metal film 20, is connected to the touch electrode 14, which is the object of connection, through a contact hole 23 formed by an opening in the interlayer insulating film 21. The portion of the touch wiring 15 adjacent to the TFT 11f (drain electrode 11f3) in the X-axis direction is locally widened, and this widened portion 15a functions as a connection pad to the touch electrode 14. This widened portion 15a is formed in the portion adjacent to each TFT 11f in the touch wiring 15, which extends transversely through a plurality of TFTs 11f arranged along the Y-axis direction, and the contact hole 23 is selectively overlapped only with a portion (or one or more) of these widened portions 15a. Although the touch wiring 15 extends generally along the Y-axis direction in a manner that traverses all touch electrodes 14, it is selectively connected to only specific touch electrodes 14 depending on the planar arrangement of the contact hole 23. Therefore, the touch wiring 15 that is connected to the touch electrode 14 and the touch wiring 15 that is not connected to the touch electrode 14 are respectively overlapped with the touch electrode 14 through the interlayer insulating film 21.

[0059] Moreover, such as Figure 2 and Figure 4As shown, the spacing P1 of a pair of source lines 11j that sandwich the pixel electrode 11g and the touch line 15 is wider than the spacing P2 of a pair of source lines 11j that sandwich the pixel electrode 11g but not the touch line 15. In other words, there are two types of spacing in the X-axis direction of the pixel portion PX. Specifically, the amount by which the spacing P1 between the source lines 11j sandwiching the pixel electrode 11g and the touch line 15 is wider than the spacing P2 between the source lines 11j sandwiching the pixel electrode 11g but not the touch line 15 is equal to the size obtained by adding the line width of the touch line 15 to the spacing between the touch line 15 and the source lines 11j. Along with this, the width dimension (dimension in the X-axis direction) W1 and area of ​​the pixel electrode 11g adjacent to the touch wiring 15 among the multiple pixel electrodes 11g arranged along the X-axis direction are set to be equal to the width dimension W2 and area of ​​the pixel electrode 11g not adjacent to the touch wiring 15 (of course, this includes cases where they are exactly the same, and also cases where differences arise due to dimensional tolerances, etc.). In addition, the structure (shape), size, and electrical characteristics of the TFT 11f connected to the pixel electrode 11g adjacent to the touch wiring 15 are set to be the same as those of the TFT 11f connected to the pixel electrode 11g not adjacent to the touch wiring 15. As a result, the white balance adjustment related to the display performed by the pixel units BPX, GPX, RPX of each color is not a special adjustment, but a general adjustment, and the display brightness of each pixel electrode 11g is easily maximized. Moreover, the parasitic capacitance generated between each pixel electrode 11g and each source wiring 11j or gate wiring 11i is less likely to cause problems. Furthermore, the pixel electrode 11g adjacent to the touch wiring 15 is sandwiched between the source wiring 11j and the touch wiring 15 in the X-axis direction, and the pixel electrode 11g not adjacent to the touch wiring 15 is sandwiched from both sides by a pair of source wirings 11j in the X-axis direction. Additionally, as... Figure 4 As shown, the width dimension W3 of the pixel openings 11l1 of the light-shielding portion 11l in the CF substrate 11a that overlap with the pixel electrode 11g adjacent to the touch wiring 15 is set to be the same as the width dimension W4 of the pixel openings 11l1 that do not overlap with the pixel electrode 11g adjacent to the touch wiring 15. Therefore, the aperture ratio (aperture area) of the pixel portions BPX, GPX, and RPX of each color is uniformized. Consequently, the degradation of display quality is suppressed.

[0060] like Figure 4As shown, the touch wiring 15 is configured in a manner sandwiched between a pixel electrode 11g that overlaps with the blue color filter 11kB and a source wiring 11j among a plurality of pixel electrodes 11g arranged along the X-axis direction. That is, the pixel electrode 11g that overlaps with the blue color filter 11kB is configured to be adjacent to the touch wiring 15 (sandwiched between the touch wiring 15 and the source wiring 11j), while the pixel electrode 11g that overlaps with the green color filter 11kG and the pixel electrode 11g that overlaps with the red color filter 11kR is configured not to be adjacent to the touch wiring 15 (sandwiched between a pair of source wirings 11j). Here, for the pixel electrode 11g that is separated from the source electrode 11j by the touch electrode 15, and the pixel electrode 11g that is not separated from the source electrode 11j by the touch electrode 15, the parasitic capacitance generated between the former and the source electrode 11j may differ from that generated between the latter and the source electrode 11j, and this difference may cause the former to exhibit display defects. Specifically, for example, if a method is used to eliminate the parasitic capacitance generated between the source electrode 11j and the adjacent pixel electrode 11g by alternately supplying image signals of opposite polarities to multiple source electrodes 11j arranged along the X-axis direction, it is possible that the parasitic capacitance generated by the pixel electrode 11g that is separated from the source electrode 11j by the touch electrode 15 may be larger than that generated by the pixel electrode 11g that is not separated from the source electrode 11j by the touch electrode 15, causing the former to exhibit display defects. In this regard, since the pixel electrode 11g, which is separated from the source electrode wiring 11j by the touch wiring 15, overlaps with the blue color filter 11kB, which has lower visual recognition (visual appeal, visual sensitivity) than the green color filter 11kG or the red color filter 11kR, even if display defects occur due to the aforementioned parasitic capacitance difference, these defects are not easily noticeable. Thus, the degradation of display quality is appropriately suppressed.

[0061] like Figure 2As shown, the source wiring 11j is arranged adjacent to the pixel electrode 11g, which is the object to which a signal is transmitted (connected). In contrast, the touch wiring 15 is arranged between the source wiring 11j and the pixel electrode 11g, which is not the object to which the signal is transmitted by the source wiring 11j. Here, "pixel electrode 11g that is the object to which the signal is transmitted by the source wiring 11j" refers to the pixel electrode 11g electrically connected to the source wiring 11j that transmits signals via the TFT 11f; "pixel electrode 11g that is not the object to which the signal is transmitted by the source wiring 11j" refers to the pixel electrode 11g that is not electrically connected to the source wiring 11j that transmits signals via the TFT 11f. Therefore, the touch wiring 15 is arranged adjacent to the source wiring 11j on the side opposite to the side of the pixel electrode 11g to which the source wiring 11j is electrically connected via the TFT 11f, with a gap between them. According to this configuration, when a signal is transmitted to the source wiring 11j (during display), the touch wiring 15 is supplied with a reference potential signal and is set to the same reference potential (same potential) as the common electrode 11h. Therefore, by making the touch wiring 15 the same potential as the common electrode 11h, the pixel electrode 11g, which is not the target of the signal transmission from the source wiring 11j, can be shielded from the electric field (source electric field) generated by the source wiring 11j. Therefore, it is possible to suppress the misalignment of liquid crystal molecules contained in the liquid crystal layer 11c due to the source electric field. In addition, it is possible to make the sum of parasitic capacitances related to the pixel electrode 11g equal in each pixel electrode 11g, thereby achieving good display quality.

[0062] like Figure 4 As shown above, both the touch wiring 15 and the source wiring 11j include a second metal film 20, which is disposed on the same layer as the pixel electrode 11g, which includes a first transparent electrode film 19. The same interlayer insulating film 21 is used to separate the touch wiring 15 and the source wiring 11j from the common electrode 11h, which includes the second transparent electrode film 22, and to separate the pixel electrode 11g from the common electrode 11h. Therefore, compared to the case where the touch wiring and the source wiring are disposed on the lower layer side (the side opposite to the common electrode 11h side, the inner side) with the second interlayer insulating film between them and the pixel electrode 11g, the second interlayer insulating film is not required, thereby reducing the corresponding manufacturing cost.

[0063] In addition, such as Figure 2 and Figure 4As shown, the common electrode 11h constituting the touch electrode 14 has an opening 24 that overlaps with at least a portion of the touch wiring 15. The opening 24 extends substantially along the Y-axis in a manner parallel to the touch wiring 15 and is designed to be elongated when viewed from above (i.e., a long strip shape with the extension direction of the touch wiring 15 defined as the long side direction). The opening 24 (except for the separating opening 11h2 described later) is designed to have a length dimension (dimension in the Y-axis direction) shorter than the length dimension of the pixel electrode 11g, and is equal to the length dimension of the pixel overlap opening 11h1 of the common electrode 11h. Furthermore, the opening 24 is designed to have a width dimension (dimension in the X-axis direction) larger than the width dimension of the source wiring 11j or the touch wiring 15, and is equal to the width dimension of the pixel overlap opening 11h1 of the common electrode 11h. Through this opening 24, parasitic capacitance that may be generated between the touch wiring 15 and the touch electrode 14 not connected to the touch wiring 15 is reduced. Therefore, the detection sensitivity is good when detecting the input position of the finger.

[0064] During the 11 hours of using the shared electrode, as Figure 2 As shown, the separating opening 11h2 that separates adjacent touch electrodes 14 also functions as an opening 24. That is, the separating opening 11h2 is configured to overlap with a portion of the touch wiring 15 (the portion on the source wiring 11j side in the X-axis direction). The separating opening 11h2 extends along the entire length of the display area AA in the Y-axis direction, thus overlapping a portion of the touch wiring 15 over approximately its entire length. This allows for the use of the existing separating opening 11h2 structure, reducing parasitic capacitance that may occur between the touch wiring 15 and the touch electrodes 14 not connected to it. Furthermore, the openings 24 of the common electrode 11h, excluding the aforementioned separating opening 11h2, are configured to align with the pixel overlapping opening 11h1 in the Y-axis direction (a direction orthogonal to the arrangement direction of the pixel overlapping opening 11h1). According to this configuration, compared with the case where the opening is configured not to be aligned with the pixel overlapping opening 11h1 in the Y-axis direction, the opening 24 and the pixel overlapping opening 11h1 can be configured more efficiently. In addition, the resistance value of the touch electrode 14 formed by dividing the common electrode 11h can be reduced.

[0065] As explained above, the liquid crystal display device (display device with position input function) 10 of this embodiment includes: a plurality of pixel electrodes 11g; a plurality of source wires (signal wires) 11j, which respectively transmit signals supplied to the plurality of pixel electrodes 11g and are arranged in a manner adjacent to the pixel electrodes 11g; a plurality of common electrodes 11h, which are arranged in a manner in which at least a portion overlaps with the pixel electrodes 11g through an interlayer insulating film (insulating film 21); and a touch electrode (position detection electrode) 14, which is formed by dividing the common electrodes 11h and forms an electrostatic capacitance with the finger, which is the position input body for position input, to detect the position input body. The finger input position; and a plurality of touch wirings (position detection wirings) 15, which are at least separated from the common electrode 11h by an interlayer insulating film 21, and are connected to the touch electrode 14 through contact holes 23 formed at least in the interlayer insulating film 21. The plurality of touch wirings 15 are arranged in a manner between the source wirings 11j and the pixel electrode 11g, and sandwiching at least a plurality of pixel electrodes 11g and a plurality of source wirings 11j in the middle. The plurality of source wirings 11j are configured such that the spacing between a pair of source wirings 11j sandwiching the pixel electrode 11g and the touch wiring 15 is wider than the spacing between a pair of source wirings 11j sandwiching the pixel electrode 11g.

[0066] With this configuration, a potential difference based on a signal transmitted by the source wiring 11j and supplied to the pixel electrode 11g can be generated between the pixel electrode 11g and a common electrode 11h that overlaps with the pixel electrode 11g via an interlayer insulating film 21. This potential difference is used for display. On the other hand, a plurality of touch wirings 15, arranged with at least an interlayer insulating film 21 between themselves and the common electrode 11h, are connected to touch electrodes 14, which are formed by dividing the common electrode 11h, via contact holes 23. The touch electrodes 14 can form an electrostatic capacitance with a finger, which serves as a position input body, and the input position of the finger, which serves as a position input body, can be detected using the signal supplied by the touch wirings 15.

[0067] Multiple touch lines 15 are arranged between source lines 11j and pixel electrodes 11g, sandwiching the multiple pixel electrodes 11g and the multiple source lines 11j. Therefore, compared to arranging the multiple touch lines 15 adjacent to each of the multiple pixel electrodes 11g, a wider arrangement space for each pixel electrode 11g can be ensured, which is suitable for improving the aperture ratio. Moreover, the spacing between a pair of source lines 11j that sandwiches the pixel electrodes 11g and touch lines 15 is wider than the spacing between a pair of source lines 11j that sandwiches the pixel electrodes 11g but not the touch lines 15. Therefore, the size of the pixel electrodes 11g adjacent to the touch lines 15 and the pixel electrodes 11g not adjacent to the touch lines 15 can be set to the same size. Therefore, for example, when the display controlled by each pixel electrode 11g presents different colors, white balance adjustment becomes a general adjustment, and the display brightness of each pixel electrode 11g is easily maximized. Furthermore, parasitic capacitance generated between each pixel electrode 11g and each source electrode wiring 11j is less likely to cause defects. Thus, a decrease in display quality is suppressed.

[0068] Furthermore, the device includes multiple color filters 11k, which are arranged to overlap with multiple pixel electrodes 11g respectively, and each filter displays at least blue, green, and red. The touch wiring 15 is arranged between the pixel electrode 11g overlapping with the color filter 11k displaying a specific color, and the source wiring 11j. In this way, with the multiple color filters 11k displaying at least blue, green, and red arranged to overlap with the multiple pixel electrodes 11g, a predetermined color image can be displayed based on signals transmitted by the multiple source wirings 11j and supplied to the multiple pixel electrodes 11g. Here, for the pixel electrode 11g that is separated from the source line 11j by the touch line 15, and the pixel electrode 11g that is not separated from the source line 11j by the touch line 15, the parasitic capacitance generated between the former and the source line 11j and the latter may differ, and this difference may cause display defects in the former. However, since the pixel electrode 11g that is separated from the source line 11j by the touch line 15 overlaps with the color filter 11k that displays a specific color, even if display defects occur due to the aforementioned difference in parasitic capacitance, display defects of colors other than the specific color are less noticeable. Therefore, by appropriately selecting the aforementioned specific color, the degradation of display quality can be appropriately suppressed.

[0069] Furthermore, the touch wiring 15 is arranged between the pixel electrode 11g that overlaps with the blue color filter 11kB (which emits blue light) and the source wiring 11j, sandwiched among multiple pixel electrodes 11g. Since blue has lower visual recognition than green or red, by setting the pixel electrode 11g that overlaps with the blue color filter 11kB (which emits blue light) and is spaced apart from the source wiring 11j, even if display defects occur due to the aforementioned parasitic capacitance difference, these defects are less noticeable. Thus, the degradation of display quality is appropriately suppressed.

[0070] Furthermore, multiple source wirings 11j are arranged adjacent to the pixel electrodes 11g that are the recipients of signals, while multiple touch wirings 15 are arranged between the source wirings 11j and the pixel electrodes 11g that are not the recipients of signals transmitted by the source wirings 11j. In this way, when a signal is transmitted to the source wirings 11j, since the touch wirings 15 are set to the same potential as the common electrode 11h, the pixel electrodes 11g that are not the recipients of signals transmitted by the source wirings 11j can be shielded from the electric field (source electric field) generated by the source wirings 11j by the touch wirings 15 that are at the same potential as the common electrode 11h. Therefore, misalignment of liquid crystal molecules contained in the liquid crystal layer 11c due to the source electric field can be suppressed, and the sum of parasitic capacitances associated with the pixel electrodes 11g can be made equal in each pixel electrode 11g, resulting in good display quality.

[0071] Furthermore, multiple touch wirings 15 and multiple source wirings 11j are disposed on the same layer as the pixel electrode 11g. In this way, the interlayer insulating film 21 separating the touch wirings 15 and source wirings 11j from the common electrode 11h is the same as that separating the pixel electrode 11g from the common electrode 11h. Therefore, compared to the case where either the touch wirings or source wirings are disposed on the side opposite to the common electrode 11h relative to the pixel electrode 11g, separated by a second interlayer insulating film, a second interlayer insulating film is unnecessary, thus reducing the corresponding manufacturing cost.

[0072] Furthermore, the areas of the pixel electrodes 11g adjacent to the touch wiring 15 and the areas of the pixel electrodes 11g not adjacent to the touch wiring 15 are set to be equal. This way, for example, when the display controlled by each pixel electrode 11g displays different colors, white balance adjustment becomes a general adjustment, and the display brightness of each pixel electrode 11g is easily maximized. Moreover, parasitic capacitance generated between each pixel electrode 11g and each source wiring 11j is less likely to cause defects. Therefore, a decrease in display quality is suppressed.

[0073] <Implementation Method 2>

[0074] according to Figure 5 or Figure 6 Embodiment 2 of the present invention will now be described. In this embodiment 2, a configuration in which the arrangement of the touch wiring 115 is changed is shown. Furthermore, repeated descriptions of the same structure, function, and effects as in Embodiment 1 are omitted.

[0075] like Figure 5 and Figure 6 As shown, in this embodiment, a plurality of touch wirings 115 are intermittently arranged such that six pixel electrodes 111g and six source wirings 111j are sandwiched between them. That is, the number of pixel electrodes 111g and source wirings 111j, which is twice (or more) the number of colors of the color filter 111k, is sandwiched between the intermittently arranged touch wirings 115 in the X-axis direction, and the spacing between the touch wirings 115 is widened to approximately twice that of Embodiment 1 described above. The six pixel electrodes 111g sandwiched between a pair of touch wirings 115 include: two pixel electrodes 111g constituting the blue pixel portion BPX, two pixel electrodes 111g constituting the green pixel portion GPX, and two pixel electrodes 111g constituting the red pixel portion RPX. According to this configuration, as described in Embodiment 1 above, the number of pixel electrodes 11g sandwiched between the touch wirings 15 is set to the same number as the number of colors of the color filter 11k (see [reference]). Figure 4 Compared to the previous method, the number of touch wirings 115 is reduced by about half. Corresponding to the reduction in the number of touch wirings 115 and the amount of space required for their arrangement, a wider arrangement space can be ensured for the multiple pixel electrodes 111g. This allows for a further increase in the aperture ratio of the pixel section PX.

[0076] As explained above, according to this embodiment, a plurality of color filters 111k are provided, which are arranged to overlap with a plurality of pixel electrodes 111g respectively, and at least display blue, green, and red. A plurality of touch wirings 115 are arranged to sandwich a number of pixel electrodes 111g that is multiple times the number of colors of the color filters 111k. In this way, compared to the case where the number of pixel electrodes 111g sandwiched between the touch wirings is the same as the number of colors of the color filters 111k, the number of touch wirings 115 is reduced, thus ensuring a wider arrangement space for the plurality of pixel electrodes 111g. This further improves the aperture ratio.

[0077] <Implementation Method 3>

[0078] according to Figure 7 or Figure 8The following describes Embodiment 3 of the present invention. In this Embodiment 3, a configuration is shown in which the arrangement of the touch wiring 215 is changed based on Embodiment 1 described above. Furthermore, repeated descriptions of the same structure, function, and effects as in Embodiment 1 are omitted.

[0079] like Figure 7 and Figure 8 As shown, in this embodiment, the plurality of touch wirings 215 are arranged intermittently with two pixel electrodes 211g and two source wirings 211j sandwiched between them. Therefore, the pixel electrodes 211g sandwiched between the source wirings 211j and the touch wirings 215 do not form pixel portions PX that display a specific color. According to this configuration, compared to the configuration described in Embodiment 1 above, the spacing between the touch wirings 215 is narrower, and the number of wirings is increased. Therefore, the number of connection points with respect to the touch electrode 214 can be increased, which is advantageous in improving the connection reliability with respect to the touch electrode 214.

[0080] <Implementation Method 4>

[0081] according to Figures 9 to 11 The present invention will now be described in its fourth embodiment. In this fourth embodiment, the configuration of the opening 324 of the common electrode 311h is modified based on the configuration of the first embodiment described above. Furthermore, repeated descriptions of the same structure, function, and effects as those in the first embodiment are omitted.

[0082] like Figures 9 to 11 As shown, in this embodiment, the first opening edge 24a of the opening 324 of the common electrode 311h is configured to be closer to the touch wiring 315 than the second opening edge 24b. The first opening edge 24a is located on the pixel electrode 311g side relative to the touch wiring 315 in the X-axis direction (the width direction of the opening 324, the arrangement direction of the plurality of touch wirings 315 and the source wiring 311j). Figures 9 to 11 As shown on the left), the second opening edge 24b is located on the opposite side of the pixel electrode 311g side relative to the touch wiring 315, that is, the source wiring 311j side. Figures 9 to 11 (As shown on the right). The first opening edge 24a in the opening 324, which is relatively closer to the touch wiring 315, is configured to be relatively closer to the opening edge of the pixel opening 311l1 of the light-shielding portion 311l in the CF substrate 311a than the second opening edge 24b. The second opening edge 24b, which is relatively farther away from the touch wiring 315, is configured to be relatively closer to the color boundary of the color filters 311k that are adjacent in the X-axis direction and present different colors to each other in the CF substrate 311a than the first opening edge 24a.

[0083] Here, as described in Embodiment 1 above, if the opening 24 of the common electrode 11h is set to be wider than the touch wiring 15, and gaps are left between the two opening edges in its width direction and the touch wiring 15 when viewed from above, light leakage may occur near the gaps due to the electric field generated from the two opening edges adjacent to these gaps, resulting in deterioration of display quality (see reference). Figure 2 and Figure 4 To prevent this light leakage, one could, for example, simply expand the formation range of the light-shielding portion 11l on the CF substrate 11a side. However, this might reduce the pixel aperture portion 11l1, thus decreasing the aperture ratio of the pixel portion PX. Regarding this, as... Figure 10 and Figure 11 As shown above, if the first opening edge 24a of the opening 324 in the common electrode 311h is positioned closer to the touch wiring 315 than the second opening edge 24b, then more light will be blocked by the touch wiring 315 near the first opening edge 24a in the opening 324 compared to the area near the second opening edge 24b. Therefore, light leakage caused by the electric field generated from the first opening edge 24a is less likely to occur compared to light leakage caused by the electric field generated from the second opening edge 24b. Consequently, light leakage is less likely to occur near the first opening edge 24a of the opening 324, that is, on the pixel electrode 311g side of the touch wiring 315 (the opening edge side of the pixel opening 311l1). Therefore, the light-shielding portion 311l does not need to have an excessively large forming range on the pixel electrode 311g side of the touch wiring 315, thus ensuring a sufficiently large size for the pixel opening 311l1. Consequently, the decrease in the aperture ratio of the pixel portion PX is suppressed.

[0084] Here, as Figure 10As shown, the light-shielding portion 311l is disposed on the CF substrate 311a, which is bonded to the array substrate 311b. Therefore, in order to reliably shield against the aforementioned light leakage, the size design needs to consider the alignment margin when bonding the two substrates 311a and 311b. However, as mentioned above, if a structure is adopted that is not prone to light leakage on the pixel electrode 311g side of the touch wiring 315 (near the first opening edge 24a of the opening 324), then when designing the size of the light-shielding portion 311l, it is sufficient to mainly consider the light leakage on the source wiring 311j side of the touch wiring 315 (the color boundary side of the color filter 311k), and the aforementioned margin can be set to about half (for example, to the extent of 5 μm). Therefore, especially in a configuration where the arrangement spacing of the pixel PX becomes narrower with increasing resolution, the decrease in the aperture ratio of the pixel PX can be more appropriately suppressed. Furthermore, since both the common electrode 311h and the touch wiring 315 are disposed on the array substrate 311b, the aforementioned tolerance need not be considered when designing the positional relationship between the first opening edge 24a and the second opening edge 24b of the opening 324 in the common electrode 311h and the touch wiring 315. Therefore, even if the aforementioned tolerance is added to the size design of the light-shielding portion 311l of the CF substrate 311a, the shrinkage of the pixel opening 311l1 will be sufficiently suppressed, thereby suppressing the decrease in aperture ratio.

[0085] like Figure 10 and Figure 11 As shown, the second opening edge 24b of the opening 324 of the common electrode 311h is designed not to overlap with the touch wiring 315, while the first opening edge 24a overlaps with a portion of the touch wiring 315. Furthermore, in Figure 11In the diagram, the overlap range OA of the first opening edge 24a of the opening 324 in the common electrode 311h and the touch wiring 315 is shown in shaded form. Specifically, the opening 324 is configured such that the first opening edge 24a overlaps with the edge of the pixel electrode 311g side (the opening edge side of the pixel opening 311l1) in the X-axis direction of the touch wiring 315, while the second opening edge 24b is separated from the edge of the source wiring 311j side (the color boundary side of the color filter 311k) in the X-axis direction of the touch wiring 315, i.e., it is configured not to overlap. The width of the overlap range OA between the first opening edge 24a and the touch wiring 315 is smaller than the interval between the second opening edge 24b and the touch wiring 315, i.e., smaller than the width of the non-overlapping range NOA, specifically about half the width of the non-overlapping range NOA. Furthermore, the length of the overlap area OA between the first opening edge 24a and the touch wiring 315 is the same as the length of the opening 324. With this configuration, a gap exists between the second opening edge 24b and the touch wiring 315 in the opening 324 when viewed from above, while no such gap exists between the first opening edge 24a and the touch wiring 315 in the opening 324. Therefore, light from the backlight device heading towards the vicinity of the second opening edge 24b may intrude through the gap towards the liquid crystal layer 311c side and become light leakage due to the electric field generated from the second opening edge 24b, while light heading towards the vicinity of the first opening edge 24a is reliably blocked by the touch wiring 315 and is less likely to become light leakage. Therefore, even without relying on the light-shielding portion 311l of the CF substrate 311a, the reliability of preventing light leakage on the pixel electrode 311g side of the touch wiring 315 is higher. Thus, a larger pixel opening 311l1 can be ensured in the light-shielding portion 311l, which is more suitable for suppressing the decrease in the aperture ratio of the pixel portion PX.

[0086] As explained above, according to this embodiment, a light-shielding portion 311l is provided to block light, and a pixel opening 311l1 is arranged to overlap with at least a portion of the pixel electrode 311g. A plurality of touch electrodes 314 are provided, and a plurality of touch wirings 315 are selectively connected to the plurality of touch electrodes 314 through contact holes 323. A common electrode 311h has an opening 324 that overlaps with at least a portion of the touch wirings 315. A first opening edge 24a of the opening edge 324, located on the pixel electrode 311g side relative to the touch wiring 315, is configured to be closer to the touch wiring 315 than a second opening edge 24b located on the side opposite to the pixel electrode 311g side relative to the touch wiring 315. Because the common electrode 311h has an opening 324 that overlaps with at least a portion of the touch wiring 315, the parasitic capacitance that may be generated between the touch wiring 315 and the touch electrodes 314 not connected to the touch wiring 315 is reduced. Therefore, the position detection sensitivity is good. However, if there is a gap between the opening edge of the common electrode opening and the touch wiring 315 when viewed from above, light leakage may occur near the gap due to the electric field generated from the opening edge adjacent to the gap, causing a deterioration in display quality. To prevent this light leakage, for example, the formation range of the light-shielding portion 311l could be increased, but this might reduce the pixel opening 311l1 and decrease the aperture ratio. In this regard, since the first opening edge 24a of the opening edge 324 of the common electrode 311h, located on the pixel electrode 311g side relative to the touch wiring 315, is positioned closer to the touch wiring 315 than the second opening edge 24b, located on the side opposite to the pixel electrode 311g side relative to the touch wiring 315, light leakage is less likely to occur on the pixel electrode 311g side of the touch wiring 315. Therefore, the light-shielding portion 311l does not need to have an excessively large forming range on the pixel electrode 311g side of the touch wiring 315, thus ensuring the size of the pixel opening 311l1 sufficiently. Consequently, the decrease in the aperture ratio is suppressed.

[0087] <Implementation Method 5>

[0088] according to Figures 12 to 14 The present invention will now be described in its fifth embodiment. In this fifth embodiment, a configuration is shown in which a second interlayer insulating film 25 is added to the configuration described in the first embodiment. Furthermore, repeated descriptions of the same structures, functions, and effects as in the first embodiment are omitted.

[0089] like Figure 13 and Figure 14As shown, in this embodiment, the array substrate 411b is configured such that a second interlayer insulating film (second insulating film) 25 is spaced between the first transparent electrode film 419 and the second metal film 420. The second interlayer insulating film 25, like the interlayer insulating film 421, comprises an inorganic material, maintaining the first transparent electrode film 419 and the second metal film 420 in an insulating state. The first transparent electrode film 419 is disposed on the upper layer side relative to the second interlayer insulating film 25, while the second metal film 420 is disposed on the lower layer side relative to the second interlayer insulating film 25. In this configuration, the interlayer insulating film 421 and the second interlayer insulating film 25 are spaced between the common electrode 411h including the second transparent electrode film 422, the touch electrode 414, and the touch wiring 415 including the second metal film 420. Therefore, as... Figure 12 and Figure 13 As shown, the contact hole 423 for connecting the touch electrode 414 and the touch wiring 415 (widened portion 415a) is formed with an opening that communicates with the interlayer insulating film 421 and the second interlayer insulating film 25. According to this configuration, since the distance in the Z-axis direction between the touch wiring 415 and the touch electrode 414 not connected to the touch wiring 415 is increased by an amount corresponding to the thickness of the second interlayer insulating film 25, the parasitic capacitance that may be generated between them is further reduced. Therefore, the sensitivity of position detection is good. Furthermore, the drain electrode 411f3 constituting the TFT 411f and including the second metal film 420 is connected to the contact portion 411g2 of the pixel electrode 411g including the first transparent electrode film 419 through a pixel contact hole 26 formed in the opening of the second interlayer insulating film 25. The pixel contact hole 26 is planarly disposed at the overlapping position of the drain electrode 411f3 of each TFT 411f and the contact portion 411g2 of each pixel electrode 411g.

[0090] As explained above, according to this embodiment, a plurality of touch electrodes 414 are provided, and a plurality of touch wirings 415 are disposed on the side opposite to the common electrode 411h side, separated from the pixel electrode 411g by a second interlayer insulating film 25, and selectively connected to the plurality of touch electrodes 414 through contact holes 423 formed in the interlayer insulating film 421 and the second interlayer insulating film 25. In this way, the interlayer insulating film 421 and the second interlayer insulating film 25 are spaced between the common electrode 411h and the touch wirings 415. Therefore, the parasitic capacitance that may be generated between the touch wirings 415 and the touch electrodes 414 not connected to the touch wirings 415 is further reduced, thereby improving the sensitivity of position detection.

[0091] <Implementation Method 6>

[0092] according to Figure 15Embodiment 6 of the present invention will now be described. In this embodiment 6, a configuration is shown in which a third metal film 27 is added to the configuration described in Embodiment 5 above. Furthermore, repeated descriptions of the same structure, function, and effects as in Embodiment 5 are omitted.

[0093] like Figure 15 As shown, in this embodiment, the array substrate 511b is configured such that a third metal film 27 is spaced between the second interlayer insulating film 25 and the interlayer insulating film 521. The third metal film 27, like the first metal film (not shown) and the second metal film 520, is configured as a single-layer film comprising one metal material or a laminated film or alloy comprising multiple metal materials, thereby possessing conductivity and light-shielding properties, and constituting the touch wiring 515. Conversely, the second metal film 520 does not constitute the touch wiring 515, but instead constitutes the source wiring 511j or the source electrode and drain electrode of the TFT (not shown). Therefore, the touch wiring 515 is disposed on the upper layer side of the second interlayer insulating film 525, on the same layer as the pixel electrode 511g, while the source wiring 511j is disposed on the lower layer side, opposite to the common electrode 511h side, across the second interlayer insulating film 525 from the pixel electrode 511g. However, the common electrode 511h has an opening 524 that overlaps with at least a portion of the touch wiring 515, thus reducing the parasitic capacitance that may occur between the touch wiring 515 and the touch electrode 514 not connected to the touch wiring 515. This results in good position detection sensitivity. On the other hand, when a signal is transmitted to the source wiring 511j, an electric field may be generated between the source wiring 511j and the opening edge of the opening 524 in the common electrode 511h, potentially inducing light leakage from the vicinity of the opening 524. Regarding this, as described above, since the interlayer insulating film 521 and the second interlayer insulating film 525 are spaced between the common electrode 511h and the source wiring 511j, the electric field that may occur between the source wiring 511j and the common electrode 511h is weakened. Therefore, light leakage from the vicinity of the opening 524 due to the source wiring 511j is less likely.

[0094] As explained above, according to this embodiment, the common electrode 511h has an opening 524 that overlaps with at least a portion of the touch wiring 515, and a plurality of source wirings 511j are disposed on the side opposite to the common electrode 511h side, separated from the pixel electrode 511g by a second interlayer insulating film 525. In this way, the common electrode 511h has an opening 524 that overlaps with at least a portion of the touch wiring 515, thus reducing the parasitic capacitance that may be generated between the touch wiring 515 and the touch electrode 514 not connected to the touch wiring 515. Therefore, the sensitivity of position detection is good. On the other hand, when a signal is transmitted to the source wirings 511j, an electric field may be generated between the source wirings 511j and the opening edge of the opening 524 in the common electrode 511h, thereby inducing light leakage from the vicinity of the opening 524. In this regard, since the interlayer insulating film 521 and the second interlayer insulating film 525 are separated from the common electrode 511h and the source wiring 511j, the electric field that may be generated between the source wiring 511j and the common electrode 511h is weakened. As a result, light leakage from the vicinity of the opening 524 due to the source wiring 511j is less likely to occur.

[0095] <Implementation Method 7>

[0096] according to Figure 16 Embodiment 7 of the present invention will now be described. In this embodiment 7, an embodiment is shown in which the configuration of the source wiring 611j and the touch wiring 615 is changed based on the above embodiment 1. Furthermore, repeated descriptions of the same structure, function, and effects as in embodiment 1 are omitted.

[0097] like Figure 16As shown, in this embodiment, the source electrode wiring 611j and the touch wiring 615 are respectively configured as a stacked structure of the first transparent electrode film 619 and the second metal film 620. With this configuration, when manufacturing the array substrate 611b, the pixel electrode 611g, the source electrode wiring 611j, and the touch wiring 615 can be patterned using a single photomask. Furthermore, by configuring the source electrode wiring 611j and the touch wiring 615 as a stacked structure of the first transparent electrode film 619 and the second metal film 620, the wiring resistance can be reduced. Moreover, the source electrode wiring 611j and the touch wiring 615 can have redundancy, thus reducing the probability of wire breakage. That is, to pattern the pixel electrode 611g, the source electrode wiring 611j, and the touch wiring 615, firstly, after successively forming the first transparent electrode film 619 and the second metal film 620, a photoresist film is formed, and then exposure is performed using a halftone mask (not shown). The halftone mask includes: a transmissive region that allows exposure light from the exposure apparatus to pass through with approximately 100% transmittance; a semi-transmissive region that allows the exposure light to pass through with, for example, 10% to 70% transmittance; and a light-blocking region that blocks the exposure light. The transmissive or light-blocking region is configured to overlap with the formation areas of the source wiring 611j and the touch wiring 615 when viewed from above, and the semi-transmissive region is configured to overlap with the formation area of ​​the pixel electrode 611g when viewed from above. When etching is performed after exposure using this halftone mask, the portions of both the first transparent electrode film 619 and the second metal film 620 that remain become the source wiring 611j and the touch wiring 615, while the portion of only the first transparent electrode film 619 that remains becomes the pixel electrode 611g. As described above, since the pixel electrode 611g, source wiring 611j, and touch wiring 615 can be patterned using a single photomask, it is suitable for achieving low manufacturing costs.

[0098] <Other Implementation Methods>

[0099] The present invention is not limited to the embodiments described above and the accompanying drawings. For example, the following embodiments are also included within the technical scope of the present invention.

[0100] (1) In the above embodiments, examples are shown of 2, 3, or 6 pixel electrodes and 2, 3, or 6 source electrodes sandwiched between touch electrodes arranged along the X-axis direction. However, it is also possible to use a configuration in which 4, 5, or 7 or more pixel electrodes and 4, 5, or 7 or more source electrodes are sandwiched between touch electrodes. In this case, by using the method described in Embodiment 2, and using a configuration in which the number of pixel electrodes and source electrodes is an integer obtained by multiplying the number of colors of the color filter by 3 or more, it is possible to set up a configuration in which touch electrodes are sandwiched between pixel electrodes and source electrodes that overlap with the color filter that displays a specific color.

[0101] (2) In the above embodiments (except for embodiment 3), a case was shown where the touch wiring was regularly arranged between the pixel electrode and the source wiring that overlapped with the blue color filter. However, it is also possible that the touch wiring is not arranged between the pixel electrode and the source wiring that overlapped with the blue color filter, but rather regularly arranged between the pixel electrode and the source wiring that overlapped with the green or red color filter. In this case, it is preferable to arrange the touch wiring regularly between the pixel electrode and the source wiring that overlapped with the red color filter that displays red, as red has lower visual recognition and is second only to blue.

[0102] (3) In the above embodiments, the color filter is illustrated as being composed of three colors: red, green, and blue. However, the present invention can also be applied to a configuration having a color filter composed of four colors: red, green, blue, and yellow or white. In addition, the number of colors in the color filter can be set to five or more.

[0103] (4) In the above embodiment 4, a configuration is shown in which the first opening edge of the opening of the common electrode overlaps with a part of the touch wiring, but it is also possible that the first opening edge and the second opening edge of the opening of the common electrode do not overlap with the touch wiring.

[0104] (5) The above embodiments show a case where the partition opening in the common electrode overlaps with the touch wiring, but it is also possible for the partition opening not to overlap with the touch wiring.

[0105] (6) In the above embodiments, the case where the first transparent electrode film is arranged opposite to the lower layer side and the second metal film is arranged opposite to the upper layer side is shown, but the stacking order of the first transparent electrode film and the second metal film can also be reversed.

[0106] (7) In the above embodiments, the source wiring is arranged at a distance from the touch wiring on the pixel electrode side that is to be connected, but it is also possible to arrange the source wiring at a distance from the touch wiring on the pixel electrode side that is not to be connected.

[0107] (8) Of course, the technical matters described in the above embodiments can also be appropriately combined.

[0108] (9) In the above embodiment 5, it is shown that the first transparent electrode film disposed on the lower layer side constitutes the pixel electrode and the second transparent electrode film disposed on the upper layer side constitutes the common electrode, but it is also possible that the first transparent electrode film constitutes the common electrode and the second transparent electrode film constitutes the pixel electrode.

[0109] (10) In the above embodiment 5, a pixel overlap opening for controlling the orientation of liquid crystal molecules contained in the liquid crystal layer is provided in the common electrode, but an opening for controlling the orientation of liquid crystal molecules contained in the liquid crystal layer can also be provided in the pixel electrode.

[0110] (11) The above embodiments show the case where the source wiring has a slanted extension, but it is also possible for the source wiring to not have a slanted extension and only include a portion that extends straight along the Y-axis.

[0111] (12) The above embodiments show the case where the light-shielding part is provided on the CF substrate side, but the light-shielding part may also be provided on the array substrate side.

[0112] (13) In addition to the embodiments described above, the semiconductor film constituting the channel portion of the TFT may also be polysilicon. In this case, it is preferable to set the TFT as a bottom gate type.

[0113] (14) The above embodiments show the case where the touch panel pattern is set to self-capacitance, but the touch panel pattern may also be mutual-capacitance.

[0114] (15) Transmissive liquid crystal panels have been illustrated in the above embodiments, but the present invention can also be applied to reflective liquid crystal panels or semi-transmissive liquid crystal panels.

[0115] (16) The above embodiment shows that the planar shape of the liquid crystal display device (liquid crystal panel or backlight device) is a vertically elongated rectangle, but the planar shape of the liquid crystal display device can also be a horizontally elongated rectangle, square, circle, semicircle, oval, ellipse, trapezoid, etc.

[0116] (17) The above embodiments illustrate a liquid crystal panel configured to hold a liquid crystal layer between a pair of substrates, but the present invention can also be applied to a display panel that holds functional organic molecules other than liquid crystal material between a pair of substrates.

[0117] Explanation of reference numerals in the attached figures

[0118] 10… Liquid crystal display device (display device with position input function), 11a, 311a… CF substrate (opposite substrate), 11b, 311b, 411b, 511b, 611b… Array substrate, 11g, 111g, 211g, 311g, 411g, 511g, 611g… Pixel electrode, 11h, 311h, 411h, 511h… Common electrode, 11j, 111j, 211j, 311j, 511j, 611j… Source wiring (signal wiring), 11k, 111k, 311k… Color filter, 11kB… Blue color filter (color filter that displays blue), 11kG… Green color filter (color filter that displays green) Green color filter), 11kR… Red color filter (color filter that presents red), 11l, 311l… Light-shielding part, 11l1, 311l1… Pixel opening, 14, 214, 314, 414, 514… Touch electrode (position detection electrode), 15, 115, 215, 315, 415, 515, 615… Touch wiring (position detection wiring), 21, 421, 521… Interlayer insulating film (insulating film), 23, 423… Contact hole, 24, 324, 524… Opening, 24a… First opening edge, 24b… Second opening edge, 25, 525… Second interlayer insulating film (second insulating film), P1, P2… Spacing.

Claims

1. A display device with a position input function, characterized by comprising: a plurality of pixel electrodes; a plurality of signal lines that respectively transmit signals supplied to the plurality of pixel electrodes, a common electrode that is disposed so as to overlap at least a part of the plurality of pixel electrodes with an insulating film interposed therebetween; a position detection electrode that is formed by dividing the common electrode, forms an electrostatic capacitor with a position input body that performs a position input, and detects an input position of the position input body; and a plurality of position detection lines that are disposed on a side opposite to the side of the pixel electrodes with a second insulating film interposed therebetween, are connected to the position detection electrode through a contact hole formed in the second insulating film, and are disposed so as to sandwich at least a plurality of the pixel electrodes and a plurality of the signal lines, wherein the pixel electrodes are provided with an opening portion for performing orientation control of liquid crystal molecules, wherein the plurality of signal lines are disposed so that the interval of a pair of the signal lines that sandwich the pixel electrodes and the position detection lines is wider than the interval of a pair of the signal lines that sandwich at least a plurality of the pixel electrodes and a plurality of the signal lines, wherein a light shielding portion that shields light and has a pixel opening portion disposed so as to overlap at least a part of the pixel electrodes is provided, wherein a plurality of the position detection electrodes are provided, and the plurality of position detection lines are selectively connected to the plurality of position detection electrodes through the contact hole, wherein the common electrode has an opening portion so as to overlap at least a part of the position detection lines, and wherein a first opening edge of the opening portion that is located on the side of the pixel electrodes with respect to the position detection lines is disposed closer to the position detection lines than a second opening edge of the opening portion that is located on the side opposite to the side of the pixel electrodes with respect to the position detection lines.

2. The display device with a position input function according to claim 1, characterized by comprising a plurality of color filters that are disposed so as to overlap the plurality of pixel electrodes respectively, and that exhibit at least blue, green, and red, wherein the position detection lines are disposed so as to sandwich the pixel electrodes that overlap the color filters that exhibit a specific color among the plurality of pixel electrodes and the signal lines.

3. The display device with a position input function according to claim 2, characterized in that the position detection lines are disposed so as to sandwich the pixel electrodes that overlap the color filters that exhibit the blue among the plurality of pixel electrodes and the signal lines.

4. The display device with a position input function according to any one of claims 1 to 3, characterized by comprising a plurality of color filters that are disposed so as to overlap the plurality of pixel electrodes respectively, and that exhibit at least blue, green, and red, wherein the plurality of position detection lines are disposed so as to sandwich a number of the pixel electrodes that is a multiple of the number of colors of the color filters. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 5. The display device with a position input function according to any one of claims 1 to 3, A plurality of the signal wirings are arranged adjacent to the pixel electrodes that are the transmission targets of the signals, and a plurality of the position detection wirings are arranged between the signal wirings and the pixel electrodes that are not the transmission targets of the signals transmitted by the signal wirings.

6. The display device with a position input function according to any one of claims 1 to 3, The plurality of the position detection wirings and the plurality of the signal wirings are arranged on the same layer.

7. The display device with a position input function according to any one of claims 1 to 3, The area of the pixel electrodes adjacent to the position detection wirings among the plurality of the pixel electrodes and the area of the pixel electrodes not adjacent to the position detection wirings among the plurality of the pixel electrodes are made equal.

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