JP5896282B2 - Touch panel substrate and display device with touch panel function - Google Patents

Description

  The present invention relates to a touch panel substrate having a detection pattern for detecting approach or contact of an external conductor. The present invention also relates to a display device with a touch panel function, comprising: a display panel that emits light toward the viewing side; and a touch panel substrate disposed on the viewer side of the display panel.

  Today, in various electronic devices, touch panels that can detect the approach or contact of an external conductor such as a finger are widely used. In recent years, capacitive touch panels have attracted attention because they are optically bright, have design properties, are easy to structure, and are functionally superior.

  The touch panel is classified into an external type and a built-in type based on the position where the touch panel is mounted. Of these, in the external type, a touch panel substrate provided on the substrate and having a detection pattern for detecting the approach or contact of the external conductor is provided outside the display device such as a liquid crystal display device or an organic EL display device. Mounted. On the other hand, in the built-in type, the touch panel substrate is incorporated in the display device. In this case, the detection pattern of the touch panel substrate is supported by any one of a plurality of components constituting the display device. That is, the substrate for supporting the detection pattern and the substrate for any one of a plurality of components constituting the display device are shared. For example, it is shared with a substrate for a color filter or a polarizing plate. For this reason, the number of components constituting the built-in touch panel is less than the number of substrates for supporting the detection pattern as compared to the components constituting the external touch panel. Therefore, by adopting the built-in type touch panel, it is possible to provide a display device with a touch panel function that is lighter, thinner, and less expensive than the external type.

  The built-in touch panel is classified into an in-cell type and an on-cell type based on the position where the detection pattern is provided. Among these, in the in-cell type, the detection pattern of the touch panel substrate is provided so as to face the display panel of the display device. For example, when a liquid crystal panel including a liquid crystal layer and a liquid crystal drive substrate is used as the display panel, the detection pattern of the touch panel substrate is provided to face the liquid crystal drive substrate through the liquid crystal layer. In this case, in the capacitive touch panel, the liquid crystal layer functions as a capacitive sensor (dielectric). As described above, in the in-cell type, since the constituent elements of the display panel are used as a capacitance sensor, it is possible to reduce the generation of noise due to the parasitic capacitance due to the display panel as compared with the on-cell type. .

JP 2011-180739 A

  In an in-cell type touch panel, a sensor column covered with a conductive pattern such as a detection pattern is generally formed between a touch panel substrate and a display panel. In a region where such sensor pillars are formed, in general, light from the display panel cannot be appropriately extracted from the observer side. That is, the region where the sensor column is formed is a region that does not contribute to the display characteristics of the display device. Therefore, it is considered that the display characteristics of the display device deteriorate as the ratio of the area occupied by the sensor column in the display device increases.

  An object of this invention is to provide the touchscreen board | substrate which can solve such a subject effectively, and a display apparatus with a touchscreen function.

  1st this invention is equipped with the board | substrate, the touchscreen sensor part provided in the one side of a board | substrate, and the color filter part provided in the one side or the other side of the board | substrate, The said touchscreen sensor part is a board | substrate. A plurality of sensor columns that extend outward from one side of the substrate along the normal direction and are made of an insulating material, and are arranged to cover the end surfaces of the sensor columns, and have a conductive detection pattern, The color filter portion is provided in a predetermined pattern and has a light blocking black matrix portion and a coloring portion disposed adjacent to the black matrix portion, and the touch panel sensor portion includes the color filter portion. The sensor column is a touch panel substrate that is disposed so as to overlap with the black matrix portion of the color filter portion when viewed from the normal direction of the substrate.

  According to the first aspect of the present invention, the sensor column of the touch panel sensor unit is arranged so as to overlap with the black matrix unit of the color filter unit when viewed from the normal direction of the substrate. That is, the sensor column is disposed in a region not intended to transmit light. Accordingly, it is possible to prevent display characteristics from being deteriorated due to the provision of the sensor column.

  In the touch panel substrate according to the first aspect of the present invention, the colored portion is composed of a first colored portion composed of a first colored material, a second colored portion composed of a second colored material, and a third colored material. The third coloring material may be included, and here, the unit pixel is constituted by the first coloring portion, the second coloring portion, and the third coloring portion arranged in order. In this case, the sensor column is preferably arranged so as to overlap with the black matrix portion extending between the unit pixels in the black matrix portion when viewed from the normal direction of the substrate.

  In the touch panel substrate according to the first aspect of the present invention, the black matrix portion includes a first black matrix portion extending in the first direction between the unit pixels, and a second black matrix portion extending in the second direction between the unit pixels. May be included. In this case, the sensor column is preferably arranged so as to overlap with a region where the first black matrix portion and the second black matrix portion intersect when viewed from the normal direction of the substrate.

  In the touch panel substrate according to the first aspect of the present invention, the color filter portion may be provided on one side of the substrate. In this case, a unit pixel adjacent to the sensor column among the unit pixels may be formed with a notch that faces the sensor column.

  In the touch panel substrate according to the first aspect of the present invention, the detection pattern includes a sensor unit disposed on an end surface of the sensor column and a transmission unit extending in parallel with the substrate, and the touch panel substrate includes the sensor unit. An overcoat layer may be further provided that is exposed and covers the transmission portion and has an insulating property.

  In the touch panel substrate according to the first aspect of the present invention, the touch panel substrate further includes a plurality of spacers arranged on one side of the substrate and extending from one side of the substrate to the outside along the normal direction of the substrate, beyond the sensor pillars, The end surface of the spacer may be covered with the overcoat layer.

  The touch panel substrate according to the first aspect of the present invention is arranged on one side of the substrate so as to surround the sensor column, and extends from the one side of the substrate to the outside along the normal direction of the substrate beyond the sensor column. May be further provided.

  In the touch panel substrate according to the first aspect of the present invention, the shield member is preferably made of a material having insulation and elasticity.

  2nd this invention is equipped with the display panel which radiate | emits light toward an observer side, and the touchscreen board | substrate arrange | positioned at the observer side of the said display panel, The said touchscreen board | substrate is a board | substrate, The said board | substrate of the said board | substrate A touch panel sensor unit provided on the display panel side, and a color filter unit provided on the display panel side or the viewer side of the substrate, the touch panel sensor unit having a conductive detection pattern. The color filter portion includes a black matrix portion having a light shielding property provided in a predetermined pattern, and a coloring portion disposed adjacent to the black matrix portion, and the display panel is a display panel substrate. And a sensor pattern that is provided on the viewer side of the display panel substrate and has conductivity, and the sensor pattern is normal to the display panel substrate. The touch panel sensor unit is configured to intersect with the detection pattern of the touch panel sensor unit when viewed from the direction, and the touch panel sensor unit is disposed so as to overlap the black matrix unit of the color filter unit when viewed from the normal direction of the substrate, The color filter portion extends toward the display panel and has an end surface covered with the detection pattern and further includes an insulating sensor column. Alternatively, the display panel is the color filter portion as viewed from the normal direction of the touch panel substrate. The display device with a touch panel function is disposed so as to overlap with the black matrix portion, extends toward the touch panel substrate, has an end surface covered with the sensor pattern, and further includes an insulating sensor column.

  According to the second aspect of the present invention, the sensor column is disposed so as to overlap with the black matrix portion of the color filter portion when viewed from the normal direction of the substrate. That is, the sensor column is disposed in a region not intended to transmit light. Accordingly, it is possible to prevent display characteristics from being deteriorated due to the provision of the sensor column.

  3rd this invention is equipped with the board | substrate and the touchscreen sensor part provided in the one side of a board | substrate, The said touchscreen sensor part is extended outward from the one side of a board | substrate along the normal line direction of a board | substrate, A plurality of sensor columns made of an insulating material, and a conductive detection pattern disposed to cover the end surface of the sensor column, the detection pattern on the end surface of the sensor column The touch panel substrate further including an overcoat layer having an insulating property and exposing the sensor unit and covering the transmission unit. It is a touch panel substrate.

  According to the third aspect of the present invention, the sensor portion of the detection pattern located on the end face of the sensor column is exposed, and the overcoat layer having insulating properties is provided to cover the transmission portion of the detection pattern. . For this reason, it can suppress that the noise from the outside and the noise from the display panel combined with a touch panel board | substrate are superimposed on the signal transmitted to a detection pattern. For this reason, it is possible to improve the detection accuracy of the detection pattern by the sensor unit, thereby reducing the area required for the sensor unit. As a result, the sensor column can be reduced in size, which can suppress deterioration of display characteristics due to the provision of the sensor column.

  4th this invention is equipped with the board | substrate and the touchscreen sensor part provided in the one side of the board | substrate, The said touchscreen sensor part is extended outward from the one side of a board | substrate along the normal line direction of a board | substrate, A plurality of sensor pillars made of an insulating material, and a conductive detection pattern arranged to cover an end surface of the sensor pillar, wherein the touch panel substrate surrounds the sensor pillars. The touch panel substrate further includes a shield member disposed on one side and extending from one side of the substrate to the outside along the normal direction of the substrate beyond the sensor pillar.

  According to the fourth aspect of the present invention, there is provided a shield member disposed on one side of the substrate so as to surround the sensor column and extending beyond the sensor column from one side of the substrate to the outside along the normal direction of the substrate. ing. For this reason, it can suppress that the noise from the outside and the noise from the display panel combined with a touch panel board | substrate are superimposed on the signal transmitted to a detection pattern. For this reason, it is possible to improve the detection accuracy of the detection pattern by the sensor unit, thereby reducing the area required for the sensor unit. As a result, the sensor column can be reduced in size, which can suppress deterioration of display characteristics due to the provision of the sensor column.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent or suppress that a display characteristic deteriorates with a sensor pillar.

FIG. 1 is a cross-sectional view illustrating a display device with a touch panel function according to a first embodiment. 2 is a plan view of the touch panel substrate of the display device shown in FIG. 1 as viewed from the display panel side. FIG. 3 is a plan view of the display panel of the display device shown in FIG. 1 as viewed from the observer side. 4 is a cross-sectional view of the display device as viewed from the direction of IV-IV in FIGS. 2 and 3. FIG. FIG. 5 is a cross-sectional view of the display device as seen from the direction VV in FIGS. 2 and 3. FIG. 6A is a diagram illustrating a process of forming a color filter portion. FIG. 6B is a diagram illustrating a process of providing a photosensitive resin material on the color filter portion. FIG. 6C is a diagram showing a process of forming a sensor column and a spacer by exposing and developing a photosensitive resin material. FIG. 6D is a diagram illustrating a process of forming a detection pattern that covers an end surface of the sensor column. FIG. 6E is a diagram showing a step of forming an overcoat layer. FIG. 6F is a diagram illustrating a process of forming a shield member. FIG. 7 is a diagram illustrating a state in which the touch panel substrate is pressed by an external conductor. FIG. 8A is a diagram showing a change in capacitance detected when the overcoat layer and the shield member are not provided, and FIG. 8B is detected when the overcoat layer and the shield member are provided. FIG. FIG. 9 is a cross-sectional view illustrating a display device with a touch panel function according to a first modification of the first embodiment. FIG. 10 is a cross-sectional view illustrating a display device with a touch panel function according to a second modification of the first embodiment. FIG. 11 is a cross-sectional view illustrating a display device with a touch panel function according to a third modification of the first embodiment. FIG. 12 is a plan view showing a touch panel substrate in a fourth modification of the first embodiment. 13 is a cross-sectional view of the display device viewed from the XIII-XIII direction of FIG. FIG. 14 is a plan view showing a touch panel substrate according to a fifth modification of the first embodiment. 15 is an enlarged view showing a unit pixel of the touch panel substrate shown in FIG. FIGS. 16A and 16B are plan views showing a sensor column and a shield member in a sixth modification of the first embodiment. FIG. 17 is a cross-sectional view showing a display device with a touch panel function according to a seventh modification of the first embodiment. FIG. 18 is a cross-sectional view showing a display device with a touch panel function according to an eighth modification of the first embodiment. FIG. 19 is a cross-sectional view illustrating a display device with a touch panel function according to the second embodiment. FIG. 20 is a cross-sectional view illustrating a display device with a touch panel function according to a third embodiment.

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 8A and 8B. First, the entire display device 60 with a touch panel function in the present embodiment will be described with reference to FIG. In the following description, the display device 60 with a touch panel function may be simply referred to as the display device 60.

Display Device As shown in FIG. 1, the display device 60 includes a display panel 40 and a touch panel substrate 10 disposed on the viewer side of the display panel 40. Among these, the display panel 40 is configured to emit light toward the observer side and thereby display an image. The specific type of the display panel 40 is not particularly limited, and various types of display panels such as a liquid crystal display panel and an organic EL display panel can be used. However, here, the display panel 40 is a liquid crystal display panel. explain.

  As shown in FIG. 1, the display panel 40 includes a light source 12, a polarizing plate 13 disposed on the viewer side of the light source 12, a liquid crystal driving substrate 50 disposed on the viewer side of the polarizing plate 13, and liquid crystal driving. And a liquid crystal layer 45 disposed on the viewer side of the substrate 50. A polarizing plate 14 is also arranged on the viewer side of the touch panel substrate 10. Among these, the liquid crystal drive substrate 50 is configured to control the alignment direction of the liquid crystal by applying a voltage to the liquid crystal, thereby modulating the light from the light source 12. The liquid crystal drive substrate 50 is configured to apply a voltage in the horizontal direction (a direction parallel to the liquid crystal drive substrate 50) to the liquid crystal. That is, the display panel 40 is a liquid crystal display panel of a lateral electric field driving (IPS: In Plane Switching) system.

  As shown in FIG. 1, the touch panel substrate 10 includes a substrate 11, a color filter unit 20 provided on one side (display panel 40 side) of the substrate 11, and one side (display panel 40 side) of the color filter unit 20. The touch panel sensor unit 30 is provided. Among these, the touch panel sensor unit 30 is configured to detect the approach or contact of the external conductor using the liquid crystal layer 45 of the display panel 40 as a capacitive sensor. Thus, the display device 60 is a so-called in-cell type display device 60 with a touch panel function.

  As the substrate 11, various materials that can appropriately support the color filter unit 20 and the touch panel sensor unit 30 and have transparency are used. For example, glass or polymer is used.

Display Panel Next, the display panel 40 will be described in detail with reference to FIGS. FIG. 3 is a plan view showing a case where the liquid crystal drive substrate 50 of the display device 60 shown in FIG. 1 is viewed from the observer side (touch panel substrate 10 side). 4 and 5 are cross-sectional views showing a case where the display device 60 including the display panel 40 is viewed from the IV-IV direction and the VV direction of FIG.

  As shown in FIG. 3, the liquid crystal drive substrate 50 of the display panel 40 includes a substrate (display panel substrate) 51, a drive unit that is provided on the viewer side of the substrate 51, and applies a voltage to the liquid crystal layer 45, and the substrate 51, which is provided on the observer side and has a sensor pattern 56 having conductivity. As the substrate 51, various materials that can appropriately support the drive unit and the sensor pattern 56 and have transparency are used, for example, glass or polymer.

  The drive unit includes a first drive unit 53, a second drive unit 54, and a third drive unit 55 that are sequentially arranged along a first direction (for example, the x direction in FIG. 3). Among these, the 1st drive part 53 is comprised so that a voltage may be applied to the liquid crystal corresponding to the 1st coloring part 23 of the color filter part 20 of the touch panel substrate 10 mentioned later. Similarly, the second driving unit 54 and the third driving unit 55 are configured to apply a voltage to the liquid crystal corresponding to the second coloring unit 24 and the third coloring unit 25 of the color filter unit 20. Although not shown in detail, each driving unit 53, 54, 55 is configured to apply a horizontal electric field to the corresponding liquid crystal.

  The sensor pattern 56 is configured to intersect with a detection pattern 31 of the touch panel sensor unit 30 described later when viewed from the normal direction of the substrate 51. For example, as described later, the detection pattern 31 of the touch panel sensor unit 30 is configured to extend in the first direction (the x direction in FIG. 3). In this case, the sensor pattern 56 includes the first pattern as illustrated in FIG. 3. It is comprised so that it may extend in the 2nd direction (y direction of FIG. 3) orthogonal to a direction. In this way, by making the sensor pattern 56 of the liquid crystal drive substrate 50 and the detection pattern 31 of the touch panel sensor unit 30 non-parallel to each other, the approach position or the contact position of the external conductor is detected using the patterns 31 and 56. Is possible.

  The material constituting the sensor pattern 56 is not particularly limited as long as it has conductivity. For example, a transparent conductive material having conductivity and translucency may be used as a material constituting the sensor pattern 56. Transparent conductive materials include indium tin oxide (ITO), zinc oxide, indium oxide, antimony-added tin oxide, fluorine-added tin oxide, aluminum-added zinc oxide, potassium-added zinc oxide, silicon-added zinc oxide, and zinc oxide-oxidized Metal oxides such as tin, indium oxide-tin oxide, and zinc oxide-indium oxide-magnesium oxide are used. Two or more of these metal oxides may be combined.

Touch Panel Substrate Next, the touch panel substrate 10 will be described in detail with reference to FIGS. 2, 4 and 5. FIG. 2 is a plan view showing a case where the touch panel substrate 10 of the display device 60 shown in FIG. 1 is viewed from the display panel 40 side. 4 and 5 are cross-sectional views showing the display device 60 provided with the touch panel substrate 10 when viewed from the IV-IV direction and the VV direction of FIG.

(Color filter part)
First, the color filter unit 20 will be described. As shown in FIGS. 2, 4, and 5, the color filter unit 20 is provided in a predetermined pattern, and is adjacent to the black matrix unit 21 (hereinafter referred to as the BM unit 21) having light shielding properties and the BM unit 21. A plurality of colored portions arranged in such a manner. In the example shown in FIGS. 2, 4, and 5, the BM unit 21 includes a plurality of linear portions extending in a first direction (for example, the x direction in FIG. 2) and a second direction (for example, the figure) orthogonal to the first direction. 2 in the y direction). Each colored portion is disposed between each linear portion of the BM portion 21.

  As shown in FIG. 2 and FIG. 4, the coloring portion includes a first coloring portion 23, a second coloring portion 24, and a third coloring portion 25 that are sequentially arranged along the x direction. Among these, the 1st coloring part 23 is comprised from the 1st coloring material which permeate | transmits red light, for example, and the 2nd coloring part 24 is comprised from the 2nd coloring material which permeate | transmits blue light, and is 3rd coloring. The part 25 is made of a third coloring material that transmits green light. As shown in FIG. 2, the unit pixels 22 of the color filter unit 20 are configured by the coloring units 23, 24, and 25 arranged in this order.

  Each of the first to third coloring materials is a material configured by dispersing or dissolving a colorant such as a pigment or dye of each color in a photosensitive resin. As the photosensitive resin, either a negative photosensitive resin or a positive photosensitive resin can be used. For example, examples of the negative photosensitive resin include photosensitive resins having reactive vinyl groups such as acrylate, methacrylate, polyvinyl cinnamate, and cyclized rubber. Examples of the positive photosensitive resin include a chemically amplified photosensitive resin using a novolac resin as a base resin.

  The BM part 21 is made of a black material having a light shielding property. The black material is, for example, a material configured by dispersing or dissolving a black pigment or dye in a photosensitive resin. As the photosensitive resin, any of the negative photosensitive resin and the positive photosensitive resin can be used as in the case of the first to third coloring materials described above.

  As shown in FIG. 2 and FIG. 4, the width of the portion extending between the adjacent unit pixels 22 in the BM portion 21 is between the first colored portion 23 and the second colored portion 24 that are adjacent in the BM portion 21. The width of the extending portion and the width of the portion extending between the adjacent second colored portion 24 and third colored portion 25 in the BM portion 21 are wider. In the following description, a portion of the BM portion 21 that extends between the adjacent unit pixels 22 in the first direction (x direction) is referred to as a first black matrix portion 21a (first BM portion 21a). A portion extending between the unit pixels 22 in the second direction (y direction) is referred to as a second black matrix portion 21b (second BM portion 21b).

(Touch panel sensor)
Next, the touch panel sensor unit 30 will be described. As shown in FIG. 2 and FIG. 5, the touch panel sensor unit 30 extends from the surface 11 a on one side (display panel 40 side) of the substrate 11 outward (toward the display panel 40) along the normal direction of the substrate 11. The plurality of sensor pillars 32 that are extended and made of an insulating material, and the detection pattern 31 that is disposed so as to cover the end face 32b of each sensor pillar 32 and have conductivity are provided. Since each sensor column 32 is thus covered with the detection pattern 31, each sensor column 32 is represented by a dotted line in FIG. As shown in FIGS. 2 and 5, each sensor column 32 is arranged so as to overlap the BM portion 21 when viewed from the normal direction of the substrate 11. Further, as shown in FIG. 5, each sensor column 32 is arranged so as to overlap with a region where the detection pattern 31 of the touch panel substrate 10 and the sensor pattern 56 of the display panel 40 intersect when viewed from the normal direction of the substrate 11.

[Sensor column]
Preferably, as shown in FIG. 2, each sensor column 32 is disposed so as to overlap with a region where the first BM portion 21 a and the second BM portion 21 b intersect when viewed from the normal direction of the substrate 11. Thus, by arranging the sensor pillar 32 in the area where the first BM part 21a and the second BM part 21b having a wide width intersect, a wider area for arranging the sensor pillar 32 can be secured.

  The shape of each sensor column 32 is not particularly limited as long as the sensor column 32 has an end surface 32 b for supporting the sensor portion 31 a of the detection pattern 31 in the vicinity of the display panel 40. For example, each sensor column 32 has a cylindrical shape as shown in FIGS.

  The material which comprises each sensor pillar 32 is not specifically limited as long as it has insulation. For example, as a material constituting the sensor column 32, a photosensitive resin material containing the same photosensitive resin as the first to third coloring materials described above can be used. In addition, the color of the material which comprises the sensor pillar 32 is not specifically limited.

[Sensor pattern]
Next, the detection pattern 31 will be described. As long as the end surface 32b of each sensor pillar 32 is covered with the detection pattern 31, the specific pattern shape of the detection pattern 31 is not particularly limited, and various patterns can be adopted. For example, as illustrated in FIGS. 2 and 5, the detection pattern 31 may be configured to extend along the first BM part 21 a of the BM part 21. In the following description, as shown in FIG. 5, in the detection pattern 31, a portion disposed on the end surface 32b of the sensor column 32 is referred to as a sensor portion 31a, and a portion extending in parallel with the substrate 11 is referred to as a transmission portion 31b. Called.

  The material constituting the detection pattern 31 is not particularly limited as long as it has conductivity. For example, a transparent conductive material having conductivity and translucency may be used as a material constituting the detection pattern 31. As the transparent conductive material, the same transparent conductive material as that of the sensor pattern 56 described above can be used. Further, when the detection pattern 31 is arranged so as to overlap the BM portion 21 when viewed from the normal direction of the substrate 11, each detection pattern 31 does not need to have translucency. In this case, as a material constituting each detection pattern 31, a material that does not have translucency but has higher conductivity than the transparent conductive material, such as a metal material, may be used.

[spacer]
As shown in FIGS. 2 and 4, the touch panel substrate 10 further includes a plurality of spacers 34 extending from the surface 11 a on one side (display panel 40 side) of the substrate 11 to the outside (toward the display panel 40). It may be. Each spacer 34 is configured to extend outward beyond each sensor column 32. That is, the height of each spacer 34 is larger than the height of each sensor column 32. As shown in FIG. 4, each spacer 34 is in contact with the liquid crystal drive substrate 50 of the display panel 40 via an overcoat layer 35 described later. By providing such a spacer 34, the distance between the substrate 11 of the touch panel substrate 10 and the substrate 51 of the display panel 40 can be appropriately maintained. That is, the cell gap in the display device 60 can be appropriately maintained.

  As shown in FIG. 2, each spacer 34 is arranged so as not to overlap the detection pattern 31 when viewed from the normal direction of the substrate 11. Therefore, as shown in FIGS. 4 and 5, the path of the detection pattern 31 does not bend along the spacer 34. Therefore, compared with the case where each spacer 34 is arranged so as to overlap with the detection pattern 31, the number of bent portions in the detection pattern 31 can be reduced, and thereby the reliability of the detection pattern 31 can be improved. . As shown in FIGS. 2 and 4, the spacer 34 is arranged so as to overlap the BM portion 21 of the color filter portion 20 when viewed from the normal direction of the substrate 11.

  The material which comprises each spacer 34 is not specifically limited as long as it has insulation. For example, as a material constituting the spacer 34, a photosensitive resin material containing the same photosensitive resin as the first to third coloring materials described above can be used. The color of the material constituting the spacer 34 is not particularly limited.

[Overcoat layer]
Further, as shown in FIG. 5, the touch panel substrate 10 exposes the sensor portion 31 a of the detection pattern 31 (that is, the end surface 32 b of the sensor column 32) and covers an overcoat layer 35 that covers the transmission portion 31 b of the detection pattern 31. May further be included. As a material constituting the overcoat layer 35, a material having insulating properties and translucency is used, and for example, a photocurable acrylic resin is used. By providing such an overcoat layer 35, it is possible to suppress noise from the display panel 40 and noise from the outside of the display device 60 from being superimposed on a signal transmitted through the transmission unit 31b of the detection pattern 31.

  As shown in FIG. 4, the overcoat layer 35 may be configured to cover not only the transmission part 31 b of the detection pattern 31 but also the BM part 21 and the coloring parts 23, 24, and 25 of the color filter part 20. . For example, the overcoat layer 35 may be provided so as to spread over the entire area of the substrate 11 on the display panel 40 side except for the sensor portion 31a of the detection pattern 31. This can prevent the color filter unit 20 from being damaged. In FIG. 2, the display of the overcoat layer 35 is omitted for convenience. 4 shows an example in which the spacer 34 is covered with the overcoat layer 35. However, the present invention is not limited to this, and the spacer 34 is covered with the overcoat layer 35 as in the case of the sensor column 32. It does not have to be.

[Shield material]
Further, as shown in FIGS. 2 and 5, the touch panel substrate 10 may further include a shield member 33 arranged so as to surround each sensor column 32 from the side. Each shield member 33 extends outward from the surface 11a on one side (display panel 40 side) of the substrate 11 along the normal direction of the substrate 11 (toward the display panel 40) and outward beyond the sensor column 32. It is comprised so that it may extend. That is, the height of each shield member 33 is larger than the height of each sensor column 32. Each shield member 33 is in contact with the liquid crystal drive substrate 50 of the display panel 40 as shown in FIG. By providing such a shield member 33, the distance between the substrate 11 of the touch panel substrate 10 and the substrate 51 of the display panel 40 can be appropriately maintained in a region near the sensor column 32. Further, it is possible to suppress the noise from the display panel 40 and the noise from the outside of the display device 60 from being superimposed on the signal transmitted through the sensor unit 31a of the detection pattern 31.

  The specific shape of each shield member 33 is not particularly limited as long as the shield member 33 is configured to surround the sensor column 32 from the side. For example, as shown in FIGS. It has a hollow cylindrical shape.

  Although the material which comprises each shield member 33 is not specifically limited, For example, the resin material which has insulation is used like the case of the sensor pillar 32, for example. For example, as the material constituting the shield member 33, a photosensitive resin material containing the same photosensitive resin as the first to third coloring materials described above can be used. The color of the material constituting the shield member 33 is not particularly limited.

  Preferably, a resin material having elasticity is used as a material constituting each shield member 33. As a result, when the substrate 11 is pressed from the external conductor in the vicinity of the shield member 33, the distance between the substrate 11 of the touch panel substrate 10 and the substrate 51 of the display panel 40 is prevented from changing, and the shield member It is possible to prevent the members such as the overcoat layer 35 and the sensor pattern 56 in contact with the 33 from being damaged.

  Preferably, a resin material having a low relative dielectric constant, for example, a relative dielectric constant lower than 4, is used as a material constituting each shield member 33. Thereby, when a signal based on contact or approach of an external conductor is transmitted from the sensor portion 31a of the detection pattern 31 to the sensor pattern 56 using the liquid crystal layer 45 as a capacitive sensor, the signal is suppressed from being affected by the shield member 33. Can do.

  Next, the operation and effect of the present embodiment having such a configuration will be described. First, a method for manufacturing the touch panel substrate 10 and the display device 60 will be described. Next, the operation and effect of the display device 60 will be described.

Method for Manufacturing Touch Panel Substrate First, a method for manufacturing the touch panel substrate 10 will be described with reference to FIGS. 6A (a), 6 (b) to 6F (a), (b). 6A (a) (b) to 6F (a) (b), (a) is a cross-sectional view of the touch panel substrate being produced as seen from the direction of line IV-IV shown in FIG. (A) is sectional drawing which looked at the touch-panel board | substrate in preparation from the line VV direction shown in FIG.

(Color filter part formation process)
First, the substrate 11 is prepared, and then, as shown in FIGS. 6A and 6B, the color filter portion 20 having the BM portion 21 and the coloring portions 23, 24, and 25 is formed on one side of the substrate 11. The specific procedure for forming the color filter unit 20 is not particularly limited. For example, first, the BM part 21 may be formed in a predetermined pattern on one side of the substrate 11, and then the colored parts 23, 24, and 25 may be formed between the BM parts 21. Alternatively, the colored portions 23, 24, 25 may be formed in a predetermined pattern on one side of the substrate 11 first, and then the BM portion 21 may be formed between the colored portions 23, 24, 25. The method for forming the BM portion 21 and the colored portions 23, 24, and 25 on one side of the substrate 11 is not particularly limited, and a method using an exposure / development process, a method using an inkjet method, or the like is appropriately used. Of these methods, in the method using exposure / development processing, first, a photosensitive material constituting the BM portion 21 or the colored portions 23, 24, 25 is provided on one side of the substrate 11, and then the photosensitive material on the substrate 11. Are exposed and developed in a predetermined pattern. As a result, the BM part 21 or the colored parts 23, 24, 25 having a desired pattern can be obtained.

(Sensor column and spacer formation process)
Next, a process of forming the sensor column 32 and the spacer 34 will be described. Here, an example in which the sensor column 32 and the spacer 34 are made of the same photosensitive resin material 32a and the sensor column 32 and the spacer 34 are formed at the same time will be described.

  First, as shown in FIGS. 6B (a) and 6 (b), a photosensitive resin material 32a for forming the sensor column 32 and the spacer 34 is provided on the color filter portion 20. Next, the photosensitive resin material 32a is exposed using a gradation mask (not shown). At this time, in the gradation mask, the photosensitive resin material 32a remains in the region where the sensor column 32 and the spacer 34 are to be formed later, and the spacer 34 should be formed more than the region where the sensor column 32 is to be formed. A large amount of the photosensitive resin material 32a remains in the region. For example, when a negative photosensitive resin material is used as the photosensitive resin material 32 a, the gradation mask corresponds to the spacer 34 by irradiating the photosensitive resin material 32 a corresponding to the sensor column 32 with the first intensity exposure light. The photosensitive resin material 32a is irradiated with exposure light having a second intensity greater than the first intensity.

  After the exposure process using the gradation mask, the photosensitive resin material 32a is developed. As a result, as shown in FIGS. 6C (a) and 6 (b), the sensor column 32 and the spacer 34 are formed on the BM portion 21 of the color filter portion 20.

(Sensor pattern formation process)
Next, as shown in FIGS. 6D (a) and 6 (b), a detection pattern 31 covering the end face 32b of the sensor column 32 is formed. The method for forming such a detection pattern 31 is not particularly limited, and various methods can be used. For example, the conductive material may be sputtered toward one side of the substrate 11 with a mask (not shown) covering a region where the detection pattern 31 is not formed in one side of the substrate 11. . Alternatively, first, a conductive material may be provided over the entire region on one side of the substrate 11, and then the conductive material may be patterned using a photolithography method or the like.

(Formation process of overcoat layer)
Next, as shown in FIGS. 6E (a) and 6 (b), an overcoat layer 35 is formed to cover a region excluding a region corresponding to the end surface 32b of the sensor column 32 on one side of the substrate 11. The method for forming such an overcoat layer 35 is not particularly limited, and various methods can be used. For example, first, a photosensitive resin material (not shown) for forming the overcoat layer 35 is provided over the entire area on one side of the substrate 11, and then corresponds to the end surface 32 b of the sensor column 32 of the photosensitive resin material. The portion to be removed is removed by exposure / development processing.

(Shield member forming process)
Next, as shown in FIGS. 6E (a) and 6 (b), a shield member 33 that surrounds the sensor column 32 from the side is formed in the vicinity of the sensor column 32. The method for forming such an overcoat layer 35 is not particularly limited, and various methods can be used. For example, as in the process of forming the overcoat layer 35, a photosensitive resin material for constituting the shield member 33 is provided on one side of the substrate 11, and then the photosensitive resin material is exposed and developed. Thus, touch panel substrate 10 according to the present embodiment can be obtained.

  Next, the touch panel substrate 10 obtained as described above and the display panel 40 are combined. Thereby, the display device 60 with a touch panel function can be obtained.

Operation and Effect of Display Device with Touch Panel Function Next, the operation and effect of the display device 60 will be described. First, display characteristics of the display device 60 will be described.

  In the display device 60, as described above, the liquid crystal driving substrate 50 controls the alignment direction of the liquid crystal by applying a voltage to the liquid crystal, thereby modulating the light from the light source 12. However, as shown in FIG. 5, in the region where the sensor column 32 is formed in the display device 60, the region between the touch panel substrate 10 and the display panel 40 is larger than the region where the sensor column 32 is not formed. The thickness of the intervening liquid crystal layer 45 is small. For this reason, it is difficult to appropriately modulate the light from the light source 12 in the region where the sensor column 32 is formed. That is, the region where the sensor column 32 is formed is generally a region that does not contribute to the display characteristics of the display device 60.

  Here, according to the present embodiment, each sensor column 32 is arranged so as to overlap with the BM unit 21 of the color filter unit 20 when viewed from the normal direction of the substrate 11. Here, the BM portion 21 is a region made of a black material having a light shielding property. That is, the BM unit 21 is a region that is not intended to transmit light from the light source 12. For this reason, as long as the sensor column 32 is arranged so as to overlap with the BM unit 21, the sensor column 32 has little influence on the display brightness and resolution in the display device 60. Therefore, according to the present embodiment, the sensor column 32 of the touch panel substrate 10 can be formed without deteriorating the display characteristics of the display device 60.

  Next, a method for detecting the contact position or approach position of the external conductor by the display device 60 will be described.

  First, a state where no external conductor exists in the vicinity of the display device 60 will be considered. In this case, the capacitance calculated based on the current flowing through the detection pattern 31 of the touch panel substrate 10 and the sensor pattern 56 of the display panel 40 is interposed between the sensor portion 31 a of the detection pattern 31 and the sensor pattern 56. The capacitance of the liquid crystal layer 45 is detected.

  Next, a state in which an external conductor exists in the vicinity of the display device 60 will be considered. FIG. 7 is a diagram illustrating a state in which the touch panel substrate 10 of the display device 60 is pressed by the external conductor 15 (a finger in the example illustrated in FIG. 7). As shown in FIG. 7, when the external conductor 15 is in contact with the display device 60, the current flowing through the detection pattern 31 located near the external conductor 15 is discharged to the outside by the capacitance of the external conductor 15. In this case, the influence of the capacitance of the outer conductor 15 appears on the capacitance calculated based on the current flowing through the detection pattern 31 near the outer conductor 15. In the sensor pattern 56 facing the detection pattern 31 via the sensor column 32, the capacitance calculated based on the current flowing through the sensor pattern 56 is affected by the capacitance of the external conductor 15. Thus, by detecting a change in capacitance calculated from the specific patterns 31 and 56 among the plurality of detection patterns 31 and sensor patterns 56, the contact position or the approach position of the external conductor 15 can be calculated.

  By the way, in the display device 60 according to the present embodiment, a horizontal electric field drive type liquid crystal display panel is used as the display panel 40. In the case of the lateral electric field driving method, in general, the driving units 53, 54, and 55 of the liquid crystal driving substrate 50 are compared to other driving methods, for example, a method in which an electric field parallel to the normal direction of the substrate 11 is applied to the liquid crystal. It is thought that the noise emitted from is increasing. When such noise is superimposed on the current flowing through the detection pattern 31 and the sensor pattern 56, it is conceivable that the capacitance value calculated based on the current varies.

  Here, according to the present embodiment, the overcoat layer 35 that covers the transmission portion 31 b of the detection pattern 31 is provided. For this reason, it is possible to suppress the noise emitted from the drive units 53, 54, and 55 of the liquid crystal drive substrate 50 from being superimposed on the current flowing through the detection pattern 31. According to the present embodiment, the shield member 33 surrounding the sensor column 32 is further provided. For this reason, noise emitted from the drive units 53, 54, and 55 of the liquid crystal drive substrate 50 is superimposed on the current flowing through the detection pattern 31 and the current flowing through the sensor pattern 56 provided to face the sensor column 32. This can be further suppressed. As a result, the capacitance value can be calculated with high accuracy based on the current flowing through the detection pattern 31 and the sensor pattern 56.

  FIG. 8A is a diagram showing the capacity calculated when it is assumed that the above-described overcoat layer 35 and shield member 33 are not provided, and FIG. 8B shows the overcoat layer 35 and shield. It is a figure which shows the capacity | capacitance calculated when the member 33 is provided. 8A and 8B, the horizontal axis “t” represents time.

8A and 8B, when the external conductor 15 is in contact with or close to the display device 60 (ON state), the calculated capacitance value becomes large, and the external conductor 15 is connected to the display device. It is shown that the calculated capacity value decreases when the distance from 60 is off (OFF state). Here, in the example shown in FIG. 8A, the overcoat layer 35 and the shield member 33 are not provided, and thus the variation in the calculated capacitance value is large. In FIG. 8 (a), a dotted line indicated by reference numeral a ₀ represents the threshold to be utilized in distinguishing between the ON state and the OFF state. The threshold a ₀ is determined in consideration of the variation in the value of the capacitance calculated.

In the example shown in FIG. 8B, the overcoat layer 35 and the shield member 33 are provided, and thus the variation in the calculated capacitance value is small. Therefore, even if the threshold value for distinguishing between the ON state and the OFF state as made smaller than a _0, even if small example to the threshold a ₁ shown in FIG. 8 (b), the capacity of the OFF state value There does not exceed the threshold value a _1. Therefore, the ON state and the OFF state can be appropriately distinguished using the threshold value a ₁ that is smaller than the threshold value a ₀ . Further, if the threshold a ₁ is used, it is also possible to further reduce the value of capacitance during the ON state, it can be set to a value represented by the example FIG. 8 (b) code ON 'at. Here, the capacitance calculated based on the current flowing through the detection pattern 31 and the sensor pattern 56 and the area of the electrode (the area of the sensor unit 31a and the sensor pattern 56) are in a proportional relationship. Therefore, the fact that the capacity in the ON state can be reduced corresponds to the fact that the area of the sensor portion 31a, that is, the area of the end face 32b of the sensor column 32 and the area of the sensor pattern 56 can be reduced. For this reason, by providing the overcoat layer 35 and the shield member 33, even when the area of the end surface 32b of the sensor column 32 or the area of the sensor pattern 56 is small, the ON state and the OFF state can be detected appropriately. Is possible. Therefore, it is possible to reduce the size of the sensor column 32 and reduce the area of the detection pattern 31 and the sensor pattern 56 while maintaining appropriate detection accuracy for the ON state and the OFF state. As a result, it is possible to suppress the deterioration of display characteristics caused by providing the display device 60 with a touch function.

  By the way, in the display device 60 according to the present embodiment, the liquid crystal layer 45 is interposed between the sensor column 32 of the touch panel substrate 10 and the substrate 51 of the liquid crystal driving substrate 50. In this case, as shown in FIG. 7, when the display device 60 is pressed by the external conductor 15, and the substrate 11 and the sensor column 32 are displaced toward the display panel 40, the liquid crystal existing between the sensor column 32 and the substrate 51. May be pushed out to the surroundings. As a result, it is conceivable that the display characteristics around the sensor column 32 deteriorate.

  Here, according to the present embodiment, the shield member 33 that contacts both the substrate 11 and the substrate 51 is provided in the vicinity of the sensor column 32. For this reason, when the board | substrate 11 of the touchscreen board | substrate 10 is pressed by the external conductor 15 as shown in FIG. 7, it can suppress that the board | substrate 11 and the sensor pillar 32 displace to the display panel 40 side. Accordingly, it is possible to prevent the display characteristics of the display device 60 from deteriorating when the display device 60 is pressed by the external conductor 15.

  Note that various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described with reference to the drawings. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above embodiment are used for the parts that can be configured in the same manner as in the above embodiment. A duplicate description is omitted.

First to Third Modifications First, first to third modifications will be described. 9 to 11 are diagrams showing a display device 60 according to first to third modifications, respectively. 9 to 11 are cross-sectional views corresponding to the direction VV in FIGS. 2 and 3 and corresponding to FIG. 5 in the present embodiment.

  The display device 60 according to the first modification shown in FIG. 9 is different only in that the overcoat layer 35 is not provided, and the other configuration is the same as the display device 60 according to the present embodiment shown in FIG. is there. Further, the display device 60 according to the second modification shown in FIG. 10 is different only in that the shield member 33 is not provided, and the other configuration is the same as the display device 60 according to the present embodiment shown in FIG. is there. Further, the display device 60 according to the third modification shown in FIG. 11 is different only in that the overcoat layer 35 and the shield member 33 are not provided, and the other configuration is the display according to the present embodiment shown in FIG. Same as device 60.

  The sensor columns 32 of the touch panel sensor unit 30 of the touch panel substrate 10 of the display device 60 according to the first to third modifications are arranged so as to overlap the BM unit 21 of the color filter unit 20 when viewed from the normal direction of the substrate 11. Has been. For this reason, the sensor column 32 of the touch panel substrate 10 can be formed without deteriorating the display characteristics of the display device 60.

  Further, according to the first modification shown in FIG. 9, by providing the shield member 33 surrounding the sensor column 32, the capacitance value can be calculated with high accuracy. Further, according to the second modification example shown in FIG. 10, the capacitance value can be calculated with high accuracy by providing the overcoat layer 35 that covers the transmission portion 31 b of the detection pattern 31. By these things, the area of the electrode required for the detection of a capacity | capacitance can be reduced, and this can suppress the deterioration of the display characteristic by providing the display apparatus 60 with a touch function.

Fourth Modification Next, a fourth modification will be described. FIG. 12 is a plan view showing a case where the touch panel substrate 10 according to the fourth modification is viewed from the display panel 40 side, and is a plan view corresponding to FIG. 2 in the present embodiment. 13 is a cross-sectional view showing a case where the display device 60 including the touch panel substrate 10 shown in FIG. 12 is viewed from the XIII-XIII direction of FIG. The fourth modified example shown in FIGS. 12 and 13 is different only in that the spacer 34 is arranged so as to overlap the detection pattern 31 when viewed from the normal direction of the substrate 11, and the other configuration is the present embodiment. The form is the same.

  As shown in FIGS. 12 and 13, in this modification, each spacer 34 is covered with a detection pattern 31. As shown in FIG. 13, the detection pattern 31 covering the spacer 34 is further covered with an overcoat layer 35. Therefore, even when the spacer 34 is arranged so as to overlap the detection pattern 31 when viewed from the normal direction of the substrate 11, the detection pattern 31 covering the spacer 34 contacts the liquid crystal drive substrate 50 of the display panel 40. Never do. Therefore, the detection pattern 31 of the touch panel substrate 10 is not short-circuited with any conductive pattern in the display panel 40. Therefore, according to the present modification, even when the spacer 34 is arranged so as to overlap the detection pattern 31 when viewed from the normal direction of the substrate 11, the sensor is the same as in the case of the above-described embodiment. The pillar 32 and the spacer 34 can be simultaneously formed from the same photosensitive resin material. Thus, according to this modification, the touch panel substrate 10 can be manufactured with a small number of man-hours while preventing the detection pattern 31 covering the spacer 34 from coming into contact with the liquid crystal drive substrate 50.

Fifth Modification Next, a fifth modification will be described. FIG. 14 is a plan view showing a case where the touch panel substrate 10 according to the fifth modification is viewed from the display panel 40 side, and is a plan view corresponding to FIG. 2 in the present embodiment. FIG. 15 is an enlarged plan view showing the unit pixel 22 of the color filter unit 20 shown in FIG. The fifth modification shown in FIGS. 14 and 15 differs only in that the unit pixel 22 adjacent to the sensor column 32 of the unit pixels 22 is formed with a notch 22b facing the sensor column 32. Other configurations are the same as those of the present embodiment.

  As described in the present embodiment, the capacitance calculated based on the current flowing through the detection pattern 31 and the sensor pattern 56 is proportional to the area of the electrode at that time. In general, as the calculated absolute value of the capacitance is larger, the contact position or approach position of the outer conductor 15 can be detected with higher accuracy. Therefore, when the detection characteristics as a touch panel are taken into consideration, it is preferable that the electrode area is large. Here, in this modification, a means for increasing the area of the electrode without substantially deteriorating the display characteristics of the display device 60 will be described.

  In FIG. 15, the outline surrounding each coloring part 23,24,25 which comprises the unit pixel 22 is represented by the code | symbol 22a. As shown in FIG. 15, at least the unit pixel 22 adjacent to the sensor column 32 among the unit pixels 22 is configured such that a notch 22 b is formed in the contour 22 a of the portion facing the sensor column 32. That is, the portion of the unit pixel 22 that faces the sensor column 32 is reduced in a direction away from the sensor column 32. By configuring the unit pixel 22 in this way, the area of the region where the detection pattern 31 can be formed in the vicinity of the sensor column 32 can be increased. For this reason, as shown in FIG. 14, in this modification, the detection pattern 31 is in the vicinity of the sensor column 32 in the direction (y direction in FIG. 14) orthogonal to the direction in which the detection pattern 31 extends (x direction in FIG. 14). It is possible to have an extended portion 31c extended in the direction). As a result, the area of the end surface 32b of the sensor column 32 can be increased, and thereby the detection characteristics as a touch panel can be improved.

  Preferably, a colored portion corresponding to a color having high luminance in the light from the light source 12 is disposed in a region of the unit pixel 22 in which the area is reduced. For example, a red colored part or a green colored part is arranged. Thus, the extended portion 31c of the detection pattern 31 can be formed without reducing the area of the blue colored portion corresponding to the blue color whose luminance in the light from the light source 12 is normally low. Thereby, the area of the electrode can be increased without substantially deteriorating the display characteristics in the display device 60.

Sixth Modification In the present embodiment, the sensor column 32 has a columnar shape, and the shield member 33 has a hollow cylindrical shape. However, the present invention is not limited to this, and various shapes can be adopted as the shapes of the sensor column 32 and the shield member 33. For example, as shown to Fig.16 (a), the cross section of the sensor pillar 32 and the shield member 33 may be a rectangular shape.

  In the present embodiment, the example in which the sensor column 32 is surrounded by the shield member 33 without a gap from the side is shown. However, the present invention is not limited to this, and the shield member 33 may be composed of a plurality of shield columns 33a arranged in order around the sensor column 32 as shown in FIG.

Seventh Modification In the present embodiment, the example in which the color filter unit 20 is provided on one side (the display panel 40 side) of the substrate 11 is shown. However, the present invention is not limited to this, and as shown in FIG. 17, the color filter unit 20 may be provided on the other side (observer side) of the substrate 11. Also in this case, each sensor column 32 of the touch panel sensor unit 30 is disposed so as to overlap with the BM unit 21 of the color filter unit 20 when viewed from the normal direction of the substrate 11. For this reason, the sensor column 32 of the touch panel substrate 10 can be formed without deteriorating the display characteristics of the display device 60.

Eighth Modified Example In the present embodiment, a sensor column provided between the substrate 11 of the touch panel substrate 10 and the substrate 51 of the display panel 40 and covered with the conductive pattern is provided from one side of the substrate 11 to the display panel. The example formed as the sensor pillar 32 extended toward 40 was shown. However, the present invention is not limited to this, and such a sensor column may be formed on the display panel 40 side. That is, as shown in FIG. 18, the display panel 40 extends toward the touch panel sensor portion 30 of the touch panel substrate 10, and its end surface 57 b is covered with the sensor pattern 56, and has a sensor column 57 having insulation properties. May be. In this case, the sensor column 57 is disposed so as to overlap with the BM unit 21 of the color filter unit 20 when viewed from the normal direction of the substrate 11. For this reason, the sensor column 57 can be formed on the display panel 40 without deteriorating the display characteristics of the display device 60.

  In addition, although the some modification with respect to this Embodiment mentioned above has been demonstrated, naturally, it can also apply combining a some modification suitably.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment shown in FIG. 19, the arrangement of the sensor pillars 32 is not particularly limited, and is arranged in an arbitrary region on one side (display panel 40 side) of the substrate 11. That is, in the present embodiment, unlike the case of the first embodiment described above, the sensor column 32 and the BM portion 21 of the color filter portion 20 do not overlap each other when viewed from the normal direction of the substrate 11. Good. In the second embodiment shown in FIG. 19, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 19, in display device 60 according to the present embodiment, touch panel substrate 10 exposes sensor unit 31 a of detection pattern 31 and overcoat layer 35 provided to cover transmission unit 31 b of detection pattern 31. have. For this reason, it can suppress that the noise from the display panel 40 or the noise from the exterior of the display apparatus 60 is superimposed on the signal transmitted to the transmission part 31b of the detection pattern 31. FIG. As a result, as in the case of the first embodiment described above, the capacitance value can be calculated with high accuracy. As a result, it is possible to reduce the area of the electrode required for detecting the capacitance, thereby suppressing the deterioration of display characteristics due to the touch function added to the display device 60.

  Although not shown, the touch panel substrate 10 of the display device 60 according to the present embodiment may further include a shield member 33 arranged so as to surround each sensor column 32 from the side. Thereby, it is possible to further suppress the noise from the display panel 40 and the noise from the outside of the display device 60 from being superimposed on the signal transmitted through the detection pattern 31.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG. In the third embodiment shown in FIG. 20, the arrangement of the sensor columns 32 is not particularly limited, and is arranged in an arbitrary region on one side of the substrate 11 (display panel 40 side). That is, in the present embodiment, unlike the case of the first embodiment described above, the sensor column 32 and the BM portion 21 of the color filter portion 20 do not overlap each other when viewed from the normal direction of the substrate 11. Good. In the third embodiment shown in FIG. 20, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 20, in the display device 60 according to the present embodiment, the touch panel substrate 10 includes a shield member 33 disposed on the display panel 40 side of the substrate 11 so as to surround each sensor column 32 from the side. Yes. For this reason, it can suppress that the noise from the display panel 40 or the noise from the exterior of the display apparatus 60 is superimposed on the signal transmitted to the transmission part 31b of the detection pattern 31. FIG. As a result, as in the case of the first embodiment described above, the capacitance value can be calculated with high accuracy. As a result, it is possible to reduce the area of the electrode required for detecting the capacitance, thereby suppressing the deterioration of display characteristics due to the touch function added to the display device 60.

  Although not shown, the touch panel substrate 10 of the display device 60 according to the present embodiment further includes an overcoat layer 35 provided so as to expose the sensor part 31a of the detection pattern 31 and cover the transmission part 31b of the detection pattern 31. You may do it. Thereby, it is possible to further suppress the noise from the display panel 40 and the noise from the outside of the display device 60 from being superimposed on the signal transmitted through the detection pattern 31.

  In each of the above embodiments, the display panel 40 has been described as an example configured as a horizontal electric field drive type liquid crystal display panel. However, the present invention is not limited to this, and other driving methods, for example, a liquid crystal display panel of a method in which an electric field parallel to the normal direction of the substrate 11 is applied to the liquid crystal may be used.

DESCRIPTION OF SYMBOLS 10 Touch panel substrate 11 Substrate 20 Color filter part 21 BM part 21a 1st BM part 21b 2nd BM part 22 Unit pixel 22b Notch part 23 1st coloring part 24 2nd coloring part 25 3rd coloring part 30 Touch panel sensor part 31 Detection pattern 31a Sensor Part 31b Transmission part 32 Sensor column 32a Photosensitive resin material 32b End face 33 Shield member 34 Spacer 35 Overcoat layer 40 Display panel 45 Liquid crystal layer 50 Liquid crystal drive substrate 51 Substrate 56 Sensor pattern

Claims (11)

A substrate,
A touch panel sensor provided on one side of the substrate;
A color filter portion provided on one side or the other side of the substrate,
The touch panel sensor portion extends outward from one side of the substrate along the normal direction of the substrate, and is arranged to cover a plurality of sensor columns made of an insulating material and the end surfaces of the sensor columns, A detection pattern having conductivity, and
The color filter portion includes a black matrix portion having a light shielding property provided in a predetermined pattern, and a coloring portion disposed adjacent to the black matrix portion,
The sensor column of the touch panel sensor unit is disposed so as to overlap the black matrix unit of the color filter unit as viewed from the normal direction of the substrate ,
The colored part includes a first colored part composed of a first colored material, a second colored part composed of a second colored material, and a third colored part composed of a third colored material, A unit pixel is constituted by the first colored portion, the second colored portion, and the third colored portion that are arranged in order,
The sensor column is arranged so as to overlap with a black matrix portion extending between the unit pixels in the black matrix portion when viewed from the normal direction of the substrate,
The black matrix part includes a first black matrix part extending in a first direction between the unit pixels, and a second black matrix part extending in a second direction between the unit pixels,
The sensor column is arranged so as to overlap with a region where the first black matrix portion and the second black matrix portion intersect when viewed from the normal direction of the substrate,
The color filter portion is provided on one side of the substrate,
A touch panel substrate in which a notch facing the sensor column is formed in a unit pixel adjacent to the sensor column among the unit pixels . A substrate,
A touch panel sensor provided on one side of the substrate;
A color filter portion provided on one side or the other side of the substrate,
The touch panel sensor portion extends outward from one side of the substrate along the normal direction of the substrate, and is arranged to cover a plurality of sensor columns made of an insulating material and the end surfaces of the sensor columns, A detection pattern having conductivity, and
The color filter portion includes a black matrix portion having a light shielding property provided in a predetermined pattern, and a coloring portion disposed adjacent to the black matrix portion,
The sensor column of the touch panel sensor unit is disposed so as to overlap the black matrix unit of the color filter unit as viewed from the normal direction of the substrate ,
A touch panel substrate further comprising a shield member disposed on one side of the substrate so as to surround the sensor column and extending beyond the sensor column from one side of the substrate to the outside along a normal direction of the substrate The touch panel substrate according to claim 2 , wherein the shield member is made of a material having insulating properties and elasticity. The colored part includes a first colored part composed of a first colored material, a second colored part composed of a second colored material, and a third colored part composed of a third colored material, A unit pixel is constituted by the first colored portion, the second colored portion, and the third colored portion that are arranged in order,
4. The touch panel substrate according to claim 2 , wherein the sensor column is disposed so as to overlap with a black matrix portion extending between the unit pixels in the black matrix portion when viewed from a normal direction of the substrate. The black matrix part includes a first black matrix part extending in a first direction between the unit pixels, and a second black matrix part extending in a second direction between the unit pixels,
The touch panel substrate according to claim 4 , wherein the sensor column is disposed so as to overlap with a region where the first black matrix portion and the second black matrix portion intersect when viewed from the normal direction of the substrate. The color filter portion is provided on one side of the substrate,
The touch panel substrate according to claim 5 , wherein a cutout portion facing the sensor column is formed in a unit pixel adjacent to the sensor column among the unit pixels. The detection pattern includes a sensor unit disposed on an end surface of the sensor column, and a transmission unit extending in parallel with the substrate,
The touch panel substrate according to any one of claims 1 to 6 , further comprising an insulating overcoat layer provided to expose the sensor unit and cover the transmission unit. A plurality of spacers disposed on one side of the substrate and extending from one side of the substrate to the outside along a normal direction of the substrate, and extending beyond the sensor pillar;
The touch panel substrate according to claim 7 , wherein an end surface of the spacer is covered with the overcoat layer. A display panel that emits light toward the viewer,
A touch panel substrate disposed on the viewer side of the display panel,
The touch panel substrate includes a substrate, a touch panel sensor unit provided on the display panel side of the substrate, and a color filter unit provided on the display panel side or the viewer side of the substrate,
The touch panel sensor unit has a detection pattern having conductivity,
The color filter portion includes a black matrix portion having a light shielding property provided in a predetermined pattern, and a coloring portion disposed adjacent to the black matrix portion,
The display panel includes a display panel substrate and a sensor pattern provided on an observer side of the display panel substrate and having conductivity, and the sensor pattern is from a normal direction of the display panel substrate. It is configured to intersect with the detection pattern of the touch panel sensor unit,
The touch panel sensor unit is disposed so as to overlap the black matrix unit of the color filter unit when viewed from the normal direction of the substrate, extends toward the display panel and has an end surface covered with the detection pattern, and is insulated. further have a sensor columns with sex,
The colored part includes a first colored part composed of a first colored material, a second colored part composed of a second colored material, and a third colored part composed of a third colored material, A unit pixel is constituted by the first colored portion, the second colored portion, and the third colored portion that are arranged in order,
The sensor column is arranged so as to overlap with a black matrix portion extending between the unit pixels in the black matrix portion when viewed from the normal direction of the substrate,
The black matrix part includes a first black matrix part extending in a first direction between the unit pixels, and a second black matrix part extending in a second direction between the unit pixels,
The sensor column is arranged so as to overlap with a region where the first black matrix portion and the second black matrix portion intersect when viewed from the normal direction of the substrate,
The color filter portion is provided on the display panel side of the substrate,
A display device with a touch panel function, wherein the unit pixel is formed with a notch facing the sensor column . A display panel that emits light toward the viewer,
A touch panel substrate disposed on the viewer side of the display panel,
The touch panel substrate includes a substrate, a touch panel sensor unit provided on the display panel side of the substrate, and a color filter unit provided on the display panel side or the viewer side of the substrate,
The touch panel sensor unit has a detection pattern having conductivity,
The color filter portion includes a black matrix portion having a light shielding property provided in a predetermined pattern, and a coloring portion disposed adjacent to the black matrix portion,
The display panel includes a display panel substrate and a sensor pattern provided on an observer side of the display panel substrate and having conductivity, and the sensor pattern is from a normal direction of the display panel substrate. It is configured to intersect with the detection pattern of the touch panel sensor unit,
The touch panel sensor unit is disposed so as to overlap the black matrix unit of the color filter unit when viewed from the normal direction of the substrate, extends toward the display panel and has an end surface covered with the detection pattern, and is insulated. With a touch panel function, further comprising: a sensor column having a property; and a shield member disposed on the substrate so as to surround the sensor column and extending beyond the sensor column toward the display panel along a normal direction of the substrate Display device. A touch panel substrate,
A substrate,
A touch panel sensor unit provided on one side of the substrate,
The touch panel sensor portion extends outward from one side of the substrate along the normal direction of the substrate, and is arranged to cover a plurality of sensor columns made of an insulating material and the end surfaces of the sensor columns, A detection pattern having conductivity, and
The touch panel substrate further includes a shield member disposed on one side of the substrate so as to surround the sensor column, and extending beyond the sensor column from one side of the substrate to the outside along a normal direction of the substrate. Touch panel substrate.

Images