JP2017004367A - Electrode-attached color filter substrate, display device including the same substrate, as well as manufacturing method of the same substrate and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device that suppresses occurrence of parallax upon operating from an oblique direction.SOLUTION: The present invention is an electrode-attached color filter substrate that comprises: a transparent substrate that has a first surface and a second surface; a color filter that is provided on the second surface; first and second electrodes that are formed on the first surface; and an insulation film. Each of the first electrodes include: a first touch sensor unit that has a first extension part and a first connection part; and a first take-out wiring part, in which adjacent first extension parts are connected by the first connection part. Each of the second electrodes include: a second touch sensor unit that has a second extension part and a second connection part; and a second take-out wiring part, in which adjacent second extension parts are connected by the second connection part. The first and second touch sensor units are formed so as to cross in the first and second connection parts, respectively, and each of the insulation films is formed so as to coat the first connection part in a part where the first and second connection parts cross, and the second connection part is formed so as to be across the insulation film.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a color filter substrate with electrodes, a display device including a color filter substrate with electrodes, and a method for manufacturing a display device including a color filter substrate with electrodes and a color filter substrate with electrodes.

  In recent years, color liquid crystal display devices have formed a large market in applications such as liquid crystal color televisions and notebook personal computers. In applications such as mobile phones, personal digital assistants, car navigation systems, etc., touch panel type liquid crystal displays that use a touch panel as an input device for image information, with the touch panel integrated with the liquid crystal display panel, have become popular in the market. It was.

  The touch panel is classified into various types such as a resistive film method, a capacitance method, an ultrasonic method, and an optical method depending on the structure and detection method. The capacitive touch panel has a translucent conductive film (translucent electrode) arranged on a single substrate and divided into a plurality of portions. A capacitive touch panel detects a change in the amount of weak current flowing through a capacitance formed by contact (touch) of a finger or a pen, and specifies a contact position. The touch panel transmits the contact position as an input signal to a processing device (personal computer), and displays the content corresponding to the output signal of the processing device on the liquid crystal display device. Capacitive touch panels without deformation during operation have superior optical characteristics (high transmittance), high durability, and excellent operating temperature characteristics compared to resistive touch panels with deformation during operation. .

  However, a conventional touch panel type liquid crystal display is generally manufactured by separately manufacturing a touch panel substrate having a touch panel electrode and a color filter substrate having a color filter, and bonding the substrates together (for example, , See Patent Document 1). In a conventional touch panel type liquid crystal display, since a polarizing plate is provided between the touch panel electrode and the color filter, the touch panel electrode and the color filter are operated from an oblique direction due to being formed at different depths. There is a problem in display performance such as generation of parallax.

  Further, in the conventional touch panel type liquid crystal display device, when the color filter substrate and the display element substrate are bonded together after performing slimming processing to reduce the thickness of the substrate separately, Since the substrate itself is very thin, there is a possibility that the substrate may be damaged when the electrodes are formed on the color filter substrate, and the display device cannot be downsized with a high yield.

JP 2007-178758 A

  In the present invention, since the polarizing plate can be disposed outside the structure in which the touch panel electrode is attached to the color filter, the distance between the color filter and the touch panel electrode can be made shorter than before. An object of the present invention is to provide a color filter substrate with an electrode and a display device using the same, which are capable of suppressing the occurrence of parallax when operated from an oblique direction. In addition, the present invention provides a color filter substrate with an electrode and a display device using the same that can be reduced in size without damaging the substrate by performing slimming processing with the color filter substrate and the display element bonded to each other. The purpose is to provide.

  In order to solve the above-mentioned problem, a color filter substrate with an electrode according to claim 1, a transparent substrate having a first surface and a second surface provided on the opposite side of the first surface, and the second A color filter provided on the surface, one or more first electrodes formed on the first surface, one or more second electrodes formed on the first surface, and one or more An electrode-equipped color filter substrate comprising an insulating film, wherein each of the one or more first electrodes includes a plurality of first extension portions and one or more first connection portions. And two first extension portions adjacent to each other are connected by the first connection portion, and each of the one or more second electrodes includes a plurality of second extension portions and A second touch sensor unit having one or a plurality of second connection units; Two adjacent second extension parts including the line part are connected by the second connection part, and the first touch sensor part and the second touch sensor part are the first connection part and the second connection part. Each of the one or more insulating films covers the first connection portion at a portion where the first connection portion and the second connection portion cross each other. The second connection part is formed on the insulating film so as to straddle the insulating film.

  The color filter substrate with an electrode according to claim 2 is the color filter substrate with an electrode according to claim 1, wherein the transparent substrate is made of at least one material selected from the group consisting of glass and organic resin. It is characterized by including.

  A color filter substrate with an electrode according to claim 3 is the color filter substrate with an electrode according to claim 1 or 2, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates.

  The color filter substrate with an electrode according to claim 4 is the color filter substrate with an electrode according to any one of claims 1 to 3, wherein the sub-substrate is a cyclic olefin copolymer.

  The color filter substrate with an electrode according to claim 5 is the color filter substrate with an electrode according to any one of claims 1 to 4, wherein the first touch sensor unit and the second touch sensor unit are tin-doped oxidation. It consists of indium.

  A display device according to a sixth aspect includes the electrode-attached color filter substrate according to any one of the first to fifth aspects, and a display element attached to a bottom surface of the color filter.

  The display device according to claim 7 is the display device according to claim 6, wherein the first polarizing plate attached to the bottom surface of the display element and the first polarizing plate attached to the first surface of the transparent substrate. And two polarizing plates.

  The display device according to claim 8 is the display device according to claim 6 or 7, wherein the one or more first electrodes, the one or more second electrodes, and the one or more insulating films are included. Before being formed on the first surface, the color filter and the display element are attached, and in the attached state, the first surface of the transparent substrate and the bottom surface of the display element. The slimming process is performed.

  A display device according to a ninth aspect is the display device according to any one of the sixth to eighth aspects, wherein the display element includes a liquid crystal element or an EL element.

  The manufacturing method of Claim 10 is a manufacturing method of the color filter substrate with an electrode, Comprising: The 2nd surface of the transparent substrate which has a 1st surface and the 2nd surface provided in the other side of the said 1st surface. A first step of forming a color filter on the surface; one or a plurality of first electrodes including a first touch sensor portion and a first extraction wiring portion; and a first step including a plurality of second extension portions and a second extraction wiring portion. Or a second step of forming a plurality of second electrode precursors on the first surface, wherein the first touch sensor unit includes a plurality of first extension portions and one or more first connection portions. And two adjacent first extension portions are connected by the first connection portion, and an insulating film is formed on each of the first connection portions of the one or more first electrodes. And a third step of forming one or more second connections on the insulating film so as to straddle the insulating film A second step of obtaining one or more second electrodes from the one or more second electrode precursors by forming two adjacent second extension parts of the second electrode precursors Is connected by the second connection portion, and a fourth touch sensor portion is configured by the plurality of second extension portions and the one or more second connection portions, and includes a fourth step, and the insulation The step of forming a film is a step of forming the insulating film on the first connection portion so as to cover the first connection portion at a portion where the first connection portion and the second connection portion intersect. The first touch sensor unit and the second touch sensor unit are formed so as to intersect at the first connection unit and the second connection unit.

  The manufacturing method according to claim 11 is a method for manufacturing a display device, wherein the second surface of the transparent substrate having a first surface and a second surface provided on the opposite side of the first surface is colored. A first step of forming a filter; one or more first electrodes including a first touch sensor portion and a first extraction wiring portion; and one or more including a plurality of second extension portions and a second extraction wiring portion. A second step of forming a second electrode precursor on the first surface, wherein the first touch sensor unit has a plurality of first extension portions and one or a plurality of first connection portions. Then, two adjacent first extension portions are connected by the first connection portion, and an insulating film is formed on each of the second step and the first connection portion of the one or more first electrodes. Third step and forming one or a plurality of second connection parts on the insulating film so as to straddle the insulating film A second step of obtaining one or more second electrodes from the one or more second electrode precursors, wherein two adjacent second extensions of the second electrode precursor are the second And a fourth step in which a second touch sensor unit is configured by the plurality of second extension units and the one or plurality of second connection units, and the insulating film is formed. The step is a step of forming the insulating film on the first connection portion so as to cover the first connection portion at a portion where the first connection portion and the second connection portion intersect, and the first touch sensor And the second touch sensor unit are formed so as to intersect at the first connection unit and the second connection unit, and the manufacturing method is performed after the first step and in the second step. Before or after the fourth step, the bottom of the color filter Characterized in that it further comprises a step of mounting the display element.

  The manufacturing method according to claim 12 is the manufacturing method according to claim 11, wherein the manufacturing method attaches a first polarizing plate to a bottom surface of the display element after the step of attaching the display element, The method further includes a step of attaching a second polarizing plate to the first surface of the transparent substrate.

  The manufacturing method according to claim 13 is the manufacturing method according to claim 11 or 12, wherein the step of attaching the display element is after the first step and before the second step. , The step of attaching the display element on the color filter, and the manufacturing method includes the transparent substrate in the attached state after the step of attaching the display element and before the second step. The method further includes a step of performing a slimming process on the first surface and the bottom surface of the display element.

  A manufacturing method according to a fourteenth aspect is the manufacturing method according to any one of the eleventh to thirteenth aspects, wherein the display element is composed of a liquid crystal element or an EL element.

  The manufacturing method according to claim 15 is the manufacturing method according to any of claims 11 to 14, wherein a plurality of element regions independent of other regions are formed on the first surface of the transparent substrate. Each of the plurality of element regions is provided with the one or more first electrodes and the one or more second electrodes, and the manufacturing method may include the transparent substrate as the element region. The method further includes a step of cutting each time.

  The manufacturing method of Claim 16 is a manufacturing method in any one of Claim 11 thru | or 15, Comprising: The said transparent substrate contains at least 1 sort (s) of material selected from the group which consists of glass and organic resin. It is characterized by that.

  The manufacturing method according to claim 17 is the manufacturing method according to any of claims 11 to 16, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates.

  The manufacturing method according to claim 18 is the manufacturing method according to any one of claims 11 to 17, wherein the first touch sensor part and the second touch sensor part are made of tin-doped indium oxide. And

  The manufacturing method according to claim 19 is the manufacturing method according to any of claims 11 to 18, wherein the second step uses one or more techniques selected from photolithography and printing. It is characterized by being implemented.

  The color filter substrate with an electrode of the present invention and the display device using the same are polarized outside the structure in which the color filter and the touch panel electrode are attached without disposing a polarizing plate between the color filter and the touch panel electrode. Since it is possible to place a plate, the distance between the color filter and the touch panel electrode can be made shorter than before, thereby suppressing the occurrence of parallax when operated from an oblique direction. Can do.

  Also, by attaching the display element to the transparent substrate before electrode formation, slimming can be performed in a thick state where the substrates are bonded together, so the color filter substrate and the display element substrate are separately slimmed as in the past. Compared with the case where it is doing, it becomes possible to achieve size reduction of a display apparatus, without damaging a board | substrate.

It is a typical top view of the color filter substrate with an electrode of the 1st embodiment of the present invention. It is a typical sectional view which met a cutting line II-II of a color filter substrate with an electrode of a 1st embodiment of the present invention. It is typical sectional drawing along the cutting line III-III of the color filter substrate with an electrode of the 1st Embodiment of this invention. It is a flowchart which shows the manufacturing method of the color filter substrate with an electrode which concerns on the 1st Embodiment of this invention. It is typical sectional drawing of the liquid crystal display device of the 2nd Embodiment of this invention. It is typical sectional drawing of the liquid crystal display device of the modification of the 2nd Embodiment of this invention.

<First Embodiment>
Hereinafter, the color filter substrate with electrodes according to the first embodiment of the present invention will be described. Here, the electrode-attached color filter substrate refers to a color filter substrate on which a touch panel electrode is formed. In the present invention, by using a color filter substrate with an electrode in which a touch panel electrode is provided on the color filter substrate, a polarizing plate can be disposed outside the color filter substrate with an electrode. The distance between the two can be made shorter than before, and thereby the occurrence of parallax when operated from an oblique direction can be suppressed.

  The structural example of the color filter board | substrate with an electrode which concerns on this embodiment was shown in FIGS. FIG. 1 is a schematic top view of a color filter substrate with an electrode according to the first embodiment of the present invention. FIG. 1 shows a color filter substrate 110 with an electrode including a transparent substrate 10, a first electrode 20 a and a second electrode 20 b provided on the first surface 10 a of the transparent substrate 10, and an insulating film 23. ing.

  As shown in FIG. 1, the first electrode 20a includes a first touch sensor portion 21a and a first extraction wiring portion 22a, and the first touch sensor electrode portion 21a is adjacent to the first extension portion 25a. And a first connection part 24a for connecting the first extension parts 25a. The second electrode 20b includes a second touch sensor portion 21b and a second lead-out wiring portion 22b. The second touch sensor portion 21b is located between the second extension portion 25b and the adjacent second extension portion 25b. 2nd connection part 24b which connects. The first touch sensor unit 21a and the second touch sensor unit 21b are formed in directions substantially orthogonal to each other. The first electrode 20a and the second electrode 20b function as touch panel electrodes of the display device.

  2 is a schematic cross-sectional view along the cutting line II-II in the color filter substrate with electrodes according to the first embodiment of the present invention, and FIG. 3 is a schematic cross-sectional view along the cutting line III-III. is there. As shown in FIGS. 2 and 3, the color filter 30 is formed on the second surface 10b of the transparent substrate 10 opposite to the first surface 10a.

  The transparent substrate 10 may be colorless or colored. “Transparent” in the present invention means having a transmittance of 80% or more, preferably 95% or more over the entire visible region. Without particular limitation, a substrate generally used in a liquid crystal display device can be used as the transparent substrate 10 of the present invention. Non-limiting examples of the transparent substrate 10 include inorganic substrates such as glass, organic resin substrates such as polycarbonate, polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), and cyclic olefin copolymer (COP). When the color filter substrate with an electrode according to the present invention is used as a constituent element of a touch panel, the touch panel can be of a capacitive type. Since the capacitive touch panel does not need to consider the strain due to the application of external force unlike the resistive touch panel, the choice of the material and thickness of the transparent substrate 10 is wide. In consideration of heat resistance in the manufacturing process, it is desirable to form the transparent substrate 10 with glass.

  When an organic resin substrate is used as the transparent substrate, it is preferable that the thermal shrinkage rate of the substrate by heating at 120 ° C. for 30 minutes is smaller than 0.1%. In this range, shrinkage due to heat applied during patterning of the electrode and the insulating film can be suppressed, and displacement of the pattern formed on the first electrode 20a and the second electrode 20b and the pattern of the color filter can be prevented. Can do. The thermal shrinkage rate was obtained by measuring the size of the substrate before and after heating and calculating the percentage of dimensional change due to shrinkage.

  Further, the transparent substrate 10 may have a laminated structure of a plurality of sub-substrates. Each sub-substrate can be a self-supporting substrate that may be formed using the materials described above. For example, when a stacked structure of two sub-substrates is used, the first substrate 20 on which the first electrode 20a and the second electrode 20b are formed is formed of a material suitable for electrode formation, and the color filter 30 is provided. The two-sided sub-substrate can be formed of a material having characteristics suitable for forming the color filter 30. In the transparent substrate 10 having a laminated structure of a plurality of sub-substrates, it is desirable that at least one sub-substrate has a self-supporting property. Other sub-substrates may be non-self-supporting so-called “layers”. In other words, the transparent substrate 10 may have a laminated structure in which one or more layers are provided on a self-supporting sub-substrate.

  The 1st electrode 20a consists of the 1st touch sensor part 21a and the 1st extraction wiring part 22a, and the 1st touch sensor part 21a consists of the 1st expansion part 25a and the 1st connection part 24a. It is desirable that the first touch sensor unit 21a is part of a capacitive touch sensor and imparts visible light transparency using a transparent metal material such as tin-doped indium oxide.

  Each of the first extension portions 25a is an electrode for detecting a touch position by reading a change in capacitance between the first electrode 20a and the second electrode 20b. As a shape of the 1st expansion part 25a, what is necessary is just the shape which expands linearly or planarly. Examples of planar shapes include triangles such as regular triangles, isosceles triangles, right triangles, squares, rectangles, rhombuses, parallelograms, trapezoids, etc., (positive) hexagons, (positive) octagons, (positive) It may be of a geometrical figure such as a dodecagon, a (positive) n-gon (eg, an integer of 3 or more), a circle, an ellipse, or a star. Examples of linear and other shapes include triangles such as regular triangles, isosceles triangles, right triangles, squares, rectangles, rhombuses, parallelograms, trapezoids and other quadrangles, (positive) hexagons, (positive) eights Geometric figures such as squares, (positive) dodecagons, (positive) n-gons (n is an integer of 3 or more), circles, ellipses, stars, etc., or a combination of these as appropriate You may make it draw. These units can be repeated alone or in combination of two or more. As an example, the first extension part 25a shown in FIG. 1 can have a rectangular shape.

  The first connecting part 24a connects the first extending parts 25a adjacent to each other, thereby forming a first touch sensor part 21a extending in one direction. Since the first connection part 24a is generally formed in the display area, it is desirable that the first connection part 24a be invisible like the first extension part 25a. Moreover, since the area | region where the 1st connection part 24a and the 2nd connection part 24b cross | intersect becomes an insensitive area | region of a sensor, as long as desired electroconductivity is obtained, it is desirable to make the 1st connection part 24a thin.

  The first extraction wiring portion 22a electrically connects the first touch sensor portion 21a to an external circuit (not shown). The first extraction wiring portion 22a is made of, for example, a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium. Since the first extraction wiring portion 22a exists in a region other than the display region, the first extraction wiring portion 22a may have a width of 5 to 50 μm, preferably 10 to 30 μm for the purpose of achieving a lower electrical resistance value than maintaining invisibility. .

  The 2nd electrode 20b consists of the 2nd touch sensor part 21b and the 2nd extraction wiring part 22b, and the 2nd touch sensor part 21b consists of the 2nd expansion part 25b and the 2nd connection part 24b. The second electrode 20b has the same configuration as the first electrode 20a except that the second connection portion 24b is used instead of the first connection portion 24a and that the extending direction of the second touch sensor portion 22b is different. May be. In the second electrode 20b, the second connection portion 24b is provided on the upper surface and the side surface of the insulating film 23 provided on the first connection portion 24a of the first electrode 20a. The second extended portion 25b and the second extraction wiring portion 22b of the second electrode 20b have the same configuration as the first expansion portion 25a and the first extraction wiring portion 22a of the first electrode 20a, respectively.

  In order to prevent the first electrode 20a and the second electrode 20b from being in electrical contact, the insulating film 23 forms the first connection portion 24a at a portion where the first connection portion 24a and the second connection portion 24b intersect. It is provided on the first connection part 24a so as to cover it. Since the insulating film 23 is provided in the display region, it is desirable that the insulating film 23 be transparent to light in the visible region. The insulating film 23 is preferably formed using a photosensitive material because of the necessity of performing patterning described later. Examples of photosensitive materials that are transparent to light in the visible range include polymerizable group-containing oligomers, monomers, UV curable coating compositions containing ultraviolet polymerization initiators and additives, and the like. Alternatively, the photosensitive material may be a positive photosensitive material whose solubility is increased by light irradiation.

  The second connection part 24b is formed of a conductive material, and the second touch sensor part 21b is configured by electrically connecting the adjacent second extension parts 25b. One constituent material example of the second connection portion 24b is tin-doped indium oxide. As shown in FIGS. 1-3, the 2nd touch sensor part 21b is extended in the direction orthogonal to the 1st touch sensor part 21a. The width and film thickness of the second connection portion 24b can be determined in consideration of realization of invisibility and maintenance of desired conductivity.

  The color filter 30 can be formed using any material known in the art. The color filter 30 may have a plurality of portions that transmit light of different color regions. For example, the color filter 30 may have a red (R) colored layer, a green (G) colored layer, and a blue (B) colored layer. Each colored layer can be formed using, for example, an acrylic resin in which a pigment of each color is dispersed. Each colored layer typically has a thickness of 0.5 to 3.0 μm. The color filter 30 may further include a black matrix (BM) that blocks light in the visible region for the purpose of achieving high contrast and preventing color mixing. The black matrix can be formed using an acrylic resin in which a black pigment is dispersed. When the black pigment-dispersed acrylic resin is used, the black matrix typically has a film thickness of 0.5 to 3.0 μm. Alternatively, the black matrix may be a metal film having a thickness of 10 to 200 nm. As known in the art, in the color filter 30, each colored layer is arranged corresponding to a pixel (subpixel) portion of a display element to be combined, and a black matrix is arranged in the gap.

<Method for Producing Color Filter Substrate with Electrode According to First Embodiment>
Hereinafter, the manufacturing method of the color filter substrate with an electrode which concerns on the 1st Embodiment of this invention is demonstrated.

  FIG. 4 is a flowchart showing a method for manufacturing a color filter substrate with electrodes according to the present invention. As shown in FIG. 4, first, in step 401, a transparent substrate 10 having a first surface and a second surface opposite to the first surface is prepared. The transparent substrate 10 has the configuration as described in the first embodiment. The transparent substrate 10 may be a self-supporting substrate made of a single material, may be a laminated structure in which two different types of self-supporting sub-substrates are bonded together, or one or two of the self-supporting sub-substrates may be used. A multilayer structure with a plurality of coatings may be used.

  Next, in step 402, the color filter 30 is formed on the second surface of the transparent substrate 10. The color filter 30 can be formed on the second surface of the transparent substrate 10 by any method known in the art. For example, when each colored layer of the color filter 30 and the black matrix are formed using a photosensitive coating composition, the method includes application of the coating composition to the second surface, exposure through a photomask, and development. Can be used. Additional steps such as post-baking may be performed as necessary.

  Next, in Step 403, one or a plurality of first electrodes 20a, a plurality of second extended portions 25b, and a second extraction wiring portion 22b are formed on the first surface of the transparent substrate 10. The plurality of second extended portions 25b and second extraction wiring portions 22b formed in step 403 serve as precursors of the second electrode 20b, and are hereinafter referred to as second electrode precursors. The first touch sensor part 21a and the second extension part 25b can be formed on the first surface of the transparent substrate 10 by patterning after the metal material is attached or by a printing method. The adhesion of the metal material to the first touch sensor portion 21a and the second extension portion 25b is performed by depositing a metal material on the entire surface of the transparent substrate 10 by vapor deposition, sputtering, or the like, and then patterning the metal material. This can be done by removing the material. If necessary, the metal material may be deposited using a plurality of types of metal materials to form a metal film having a stacked structure. The patterning can be performed by any means known in the art such as a photolithography method using a positive photoresist. It is desirable that the first touch sensor unit 21a and the second extension unit 25b are part of a capacitive touch sensor and impart visible light transparency using a transparent metal material such as tin-doped indium oxide.

  On the other hand, the first extraction wiring portion 22a and the second extraction wiring portion 22b are connected to the first touch sensor portion 21a and the second expansion portion 24b, respectively, after the first touch sensor portion 21a and the second expansion portion 25b are formed. It is formed by applying a conductive paste containing a metal material in a pattern by a printing method so as to be electrically connected to a circuit (not shown). As shown in FIG. 1, the first extraction wiring portion 22 a connects the expansion portion at the end of the plurality of first expansion portions 25 a and an external circuit, and the second extraction wiring portion 22 b includes a plurality of extraction wiring portions 22 b. The extension part at the end of the second extension part 25b is formed to be connected to an external circuit. The formation of the first extraction wiring portion 22a and the second extraction wiring portion 22b may be performed after the formation of an insulating film 23 and a second connection portion 24b described later.

  At the stage where the first touch sensor portion 21a and the first extraction wiring portion 22a are formed, the one or more first electrodes 20a including the first touch sensor portion 21a and the first extraction wiring portion 22a are completed. On the other hand, the second electrode 20b is not formed with the second connection portion 24b for connecting the plurality of second extension portions 25b, and is in the form of a second electrode precursor at this stage.

  Next, in step 404, the insulating film 23 is formed on the first connection portion 24a so as to cover the first connection portion 24a. The insulating film 23 is formed by applying a photosensitive material as described above to the entire first surface of the transparent substrate 10 and emitting light in a pattern so that the photosensitive material remains in a predetermined region including immediately above the first connection portion 24a. It is formed by irradiating and then developing. For example, when a UV curable coating composition is used as the photosensitive material of the insulating film 23, the UV light is irradiated to the region including the portion directly above the first connection portion 24a. On the other hand, when a positive photosensitive material is used as the photosensitive material of the insulating film 23, light having a given wavelength is irradiated on most of the first surface excluding the region including just above the first connection portion 24a. Development can be performed using an appropriate liquid depending on the photosensitive material used.

  Next, in step 405, a metal material is deposited on the insulating film 23 to form the second connection part 24b on the insulating film 23 so as to straddle the insulating film 23, and the second extension part 25b adjacent to the second extending part 25b is second. By connecting via the connection part 24b, the 2nd electrode 20b is obtained from a 2nd electrode precursor. The metal material is deposited by depositing the metal material on the entire surface of the transparent substrate 10 (including the upper surface and side surfaces of the insulating film 23) by vapor deposition or sputtering, and then performing patterning to remove the unnecessary metal material. Can be implemented. If necessary, the metal material may be deposited using a plurality of types of metal materials to form a metal film having a stacked structure. The patterning can be performed by any means known in the art such as a photolithography method using a positive photoresist.

  Here, in this embodiment, a plurality of element regions that can be divided may be formed on one transparent substrate 10. The “element region” is a region that has a color filter 30 independent of other regions, one or a plurality of first electrodes 20a and second electrodes 20b, and can function as a color filter substrate with electrodes by cutting. means. A plurality of color filter substrates 100 with electrodes can be formed by cutting one transparent substrate 10 on which a plurality of element regions and color filters 30 are formed for each element region. Thereby, a plurality of electrode-attached color filter substrates 110 can be efficiently formed using one transparent substrate 10.

  Here, in the conventional touch panel type liquid crystal display, since it was generally manufactured by bonding the touch panel substrate and the color filter substrate separately manufactured as described above (see, for example, Patent Document 1), the touch panel substrate And the color filter substrate were cut to produce a plurality of substrates and then bonded together, so that the working efficiency of the bonding process was poor.

  According to the method of the present invention, the touch panel substrate and the color filter substrate are respectively formed by cutting the transparent substrate 10 formed with a plurality of element regions for each element region to form a plurality of electrode-attached color filter substrates 110. Compared with the conventional method of cutting and producing a plurality of substrates and then bonding them, the working efficiency of the bonding process can be improved.

  The cutting of the transparent substrate 10 in which the element region is formed may be performed using any means known in the art such as a diamond cutter scribe method, a dicing method, a water jet method, an etching method, and a laser method. . Further, the cutting of the element region may be performed at the time of manufacturing the display device, as will be described later.

<Second Embodiment>
Hereinafter, a display device according to the embodiment of the present invention will be described.

  In the display device according to the second embodiment, a liquid crystal element or an EL element can be used as the display element. First, a case where a liquid crystal element is used as a display element in the second embodiment will be described. FIG. 5 shows one configuration example of the display device according to the second embodiment.

  FIG. 5 shows a color filter substrate 110 with electrodes according to the first embodiment, a liquid crystal element 200 provided on the bottom surface of the color filter substrate 110, and a first polarizing plate 400 provided on the bottom surface of the liquid crystal element 200. A backlight 500 provided on the bottom surface of the first polarizing plate 400, a second polarizing plate 700 provided on the top surface of the color filter substrate 110, and a cover 800 provided on the top surface of the second polarizing plate 700. A display device according to a second embodiment of the present invention is shown. As shown in FIG. 5, the second polarizing plate 700 and the cover 800 are laminated on the upper surface side of the electrode-attached color filter substrate 110 according to the first embodiment, and the liquid crystal element 200, the first polarizing plate 400, and A backlight 500 is stacked.

  The liquid crystal element 200 has a structure in which a liquid crystal layer 230 is disposed between a pair of substrates 210 and 220. Substrates 210 and 220 may further include an electrode for applying an electric field to the liquid crystal and an alignment film (not shown) for aligning the liquid crystal.

  For example, an electrode composed of a plurality of stripe-shaped partial electrodes extending in the first direction is provided on the substrate 210, and a plurality of stripe-shaped portions extending in the second direction intersecting the first direction is provided on the substrate 220. A passive matrix driving type liquid crystal element can be formed by providing an electrode formed of an electrode. Preferably, the first direction is orthogonal to the second direction.

  Alternatively, a plurality of pixel electrodes connected to the switching element are provided on the substrate 210, and a common electrode integrally formed over the entire display region is provided on the substrate 220, whereby active matrix driving type liquid crystal The element 200 can be obtained. The switching element may include any element known in the art such as a thin film transistor (TFT). On the substrate 210, wirings such as scanning lines and signal lines for driving the switching elements, capacitors for maintaining a liquid crystal switching state, and the like can be further provided.

  When forming an alignment film on the liquid crystal element 200, the alignment film preferably forms the outermost surfaces of the substrates 210 and 220 so as to be in contact with the liquid crystal layer 230. The alignment film can be formed using any material known in the art such as polyimide. By performing rubbing treatment on the alignment film, the liquid crystal molecules in the liquid crystal layer 230 can be aligned in a predetermined direction.

  The liquid crystal element 200 may be an element of any type known in the art, such as a TN type, STN type, VA type, MVA type, IPS type, OCB type. The liquid crystal material constituting the liquid crystal layer 230 includes any material known in the art to be compatible with the device type.

  In the modification of this embodiment, the substrate 220 in the liquid crystal element 200 may be omitted, and a liquid crystal driving electrode and an alignment film may be provided on the color filter 30 of the electrode-attached color filter substrate 110 of the present invention. FIG. 6 shows a configuration example of this modification. In the configuration shown in FIG. 6, the backlight 500, the first polarizing plate 400, the liquid crystal element 200 ′ including the substrate 210 and the liquid crystal layer 230, the color filter substrate 110 with an electrode including an electrode for liquid crystal switching and an alignment film, the second polarization A plate 700 and a cover 800 are laminated in this order. The substrate 210 includes a pixel electrode. A flattening layer for eliminating unevenness caused by the color filter 30 may be further provided between the color filter 30 and the liquid crystal driving electrode.

  In the case of applying the configuration shown in FIG. 5 to an IPS type element that switches liquid crystal molecules in a plane, an electrode may be provided on only one of the substrate 210 and the substrate 220 and the electrode on the other substrate may be omitted. . In the IPS-type element, the other substrate from which the electrode is omitted can be replaced by the electrode-attached color filter substrate 110 of the present invention. For example, when an electrode is provided only on the substrate 210, the configuration shown in FIG. 6 in which the substrate 220 is omitted from the configuration shown in FIG. In this case, a configuration in which an alignment film is provided on the color filter 30 and the alignment film is in contact with the liquid crystal layer 230 is preferable.

  The liquid crystal element 200 includes a flexible printed circuit (FPC) substrate, an anisotropic conductive film (ACF), a TAB module, a COF module, and a COG for connecting an electrode provided on the substrate 210 and / or 220 and an external driving circuit. A module or the like may be further included.

  The first polarizing plate 400 and the second polarizing plate 700 have a characteristic of selectively transmitting light polarized in a specific direction. When used in a liquid crystal display device, the first polarizing plate 400 and the second polarizing plate 700 have a characteristic of transmitting linearly polarized light in a specific direction. The angle between the polarization direction of the linearly polarized light transmitted through the first polarizing plate 400 and the polarization direction of the linearly polarized light transmitted through the second polarizing plate 700 depends on the alignment state of the liquid crystal material to be used and the method of the element. Can be determined. In addition, the above-mentioned angle may be set so that the display device is operated in a normally white mode that transmits the light of the backlight without applying an electric field, or in a normally black mode that does not transmit the light of the backlight without applying an electric field. It depends on whether it works. For example, when a TN or STN display device is operated in a normally white mode, the angle between the polarization direction of the first polarizing plate 400 and the polarization direction of the second polarizing plate 700 is normally set to 90 °. The

  The first polarizing plate 400 and the second polarizing plate 700 can be formed of any material known in the art, including iodine compounds, dichroic molecules, and the like.

  The backlight 500 includes any light source known in the art. For example, a cold cathode fluorescent tube (CCFL), a light emitting diode (LED), or the like can be used as the backlight 500. The backlight 500 may be arranged in a display area of the display device (directly under type) or may be arranged in a peripheral portion of the display device (side light type or edge light type). In the case of the side light type or the edge light type, light emitted from the backlight 500 can be guided to the entire display region of the display device using a light guide plate, a prism sheet, or the like. The backlight 500 may be a single light source or a plurality of light sources. When the backlight 500 including a plurality of light sources is used, on / off of each light source may be controlled independently depending on display contents.

  The purpose of the cover 800 is to protect the layers existing below it. In addition, since the display content of the liquid crystal element 200 is visually recognized through the cover 800, the cover 800 is preferably transparent in the visible light region. The cover 800 can be formed of a material such as glass or organic resin (polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), or the like).

  In the present embodiment, the first electrode 20a and the second electrode 20b formed on the electrode-attached color filter substrate 110 function as touch sensor electrodes of the projection capacitive touch panel.

  Next, another example of the display device according to the second embodiment using an EL element as a display element will be described. In the display device according to the second embodiment that uses an EL element as the display element, the EL element is attached to the bottom surface of the color filter substrate 110 with electrodes. If necessary, a cover 800 may be attached on the second polarizing plate 700 provided on the color filter substrate 110 with electrodes.

  The EL element has a structure in which an organic active layer is sandwiched between a pair of substrates. Each of the pair of substrates has electrodes formed in an arrangement that forms a plurality of light-emitting portions that can be driven independently. A passive matrix driving type EL element may be formed by providing a plurality of striped electrodes extending in intersecting directions on each of a pair of substrates. Alternatively, an active matrix driving type EL element may be formed by providing a plurality of pixel electrodes connected to a switching element in one-to-one correspondence on one substrate and providing an integrated common electrode on the other substrate. Further, the organic active layer includes at least a light emitting layer, and may optionally include a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, and the like. The organic active layer may be one layer that emits white light, or may be a layer in which a plurality of areas that emit light of a plurality of colors (for example, RGB) are arranged in a matrix.

  Also in this case, the first electrode 20a and the second electrode 20b formed on the electrode-attached color filter substrate 110 function as touch sensor electrodes of the projection capacitive touch panel.

<Method for Manufacturing Display Device According to Second Embodiment>
Hereinafter, a method for manufacturing a display device according to the second embodiment of the present invention will be described.

  The manufacturing method of the display device according to the second embodiment includes a step of attaching a display element such as the liquid crystal element 200 to the second surface 10b side of the transparent substrate 10 of the electrode-attached color filter substrate 110. The attaching step can be performed by any means known in the art, including bonding with an adhesive.

  In the method for manufacturing the display device according to the second embodiment, after the display element is attached to the color filter substrate 110 with electrode, the first polarizing plate 400 is attached to the bottom surface of the display element, and the transparent color filter substrate 110 with electrode is transparent. A step of attaching the second polarizing plate 700 to the first surface 10a of the substrate 10 is included. Further, the backlight 500 may be further provided on the bottom surface of the first polarizing plate 400, and the cover 800 may be further provided on the top surface of the second polarizing plate 700. The first polarizing plate 400, the second polarizing plate 700, the backlight 500, the cover 800, and the like can also be manufactured and attached by any means known in the art.

  In the present embodiment, as described in the method for manufacturing the electrode-attached color filter substrate according to the first embodiment, a structure in which a plurality of element regions that can be divided are formed on one transparent substrate 10 may be used. Good. In this case, for example, a plurality of display devices are attached by attaching a plurality of display elements to a structure in which a plurality of element regions that can be divided are formed on one transparent substrate 10 and then cutting the transparent substrate 10. Can be manufactured. Alternatively, by attaching a display element structure in which a plurality of display elements are formed on one substrate to the above-described structure, and cutting the substrate of the transparent substrate 10 and the display element structure, a plurality of The display device may be manufactured. The cutting of the substrate of the display element structure may be performed by the same means as the transparent substrate 10.

  As a modification of the present embodiment, in the method for manufacturing a color filter substrate with an electrode according to the first embodiment, before the electrode is formed on the first surface 10a, the color filter 30 (the second of the transparent substrate 10) is formed. A display element may be attached to the surface 10b side). In this modification, the display element is attached to the transparent substrate 10 before electrode formation, and the transparent substrate 10 and the substrate 220 of the display element are bonded to each other on the second surface 10b of the transparent substrate 10 and the substrate 210. Slimming can be performed on the bottom surface. Therefore, since the slimming process can be performed in a thick state where the substrates are bonded to each other, the substrate is not damaged as compared with the case where the color filter substrate and the display element substrate are separately slimmed as in the past. There is an advantage that the display device can be miniaturized. For example, a substrate having a thickness of about 0.6 to 1.0 mm with the substrates bonded together can be thinned to a thickness of about 0.3 to 0.5 mm by slimming.

Example 1
Embodiment 1 of the present invention will be described below. Example 1 illustrates the manufacturing process of the electrode-attached color filter according to the first embodiment. First, the color filter 30 is formed on the second surface 10 b of the transparent substrate 10. Here, the black photosensitive composition was applied to the second surface 10b of the transparent substrate 10 made of aluminosilicate glass having a thickness of 300 μm using a spin coater. The obtained coating film was dried by heating to 100 ° C. for 5 minutes on a hot plate. Next, irradiation with high-pressure mercury lamp light of 100 mJ / cm ² through a photomask having a desired pattern, shower development for 30 seconds using a 0.2% by mass aqueous sodium hydrogen carbonate solution, water washing, and in a hot air circulation oven Then, heat drying at 230 ° C. for 30 minutes was performed to form a black matrix on the second surface 10 b of the transparent substrate 10. Subsequently, the same procedure except that a red photosensitive composition, a green photosensitive composition or a blue photosensitive composition was used instead of the black photosensitive composition, and a photomask corresponding to each color was used. Thus, a red colored layer, a green colored layer, and a blue colored layer were sequentially formed, and the color filter 30 was formed on the second surface.

Next, the first electrode 20 a and the second electrode precursor are formed on the first surface 10 a of the transparent substrate 10. Here, a tin-doped indium oxide (ITO) film having a film thickness of 30 nm was formed on the first surface 10a of the transparent substrate 10 by sputtering. The obtained ITO film had a sheet resistance value of 80Ω / □. Subsequently, a positive resist was applied to the entire first surface 10a using a spin coater. The obtained coating film was dried by heating to 100 ° C. for 5 minutes on a hot plate. Next, irradiation with 100 mJ / cm ² of high-pressure mercury lamp light through a photomask having a light-shielding portion at a position corresponding to a part of the insulating film 23 and the adjacent extended portion 25b, 2.3 mass% of tetramethylammonium hydroxide Shower development and water washing for 60 seconds using (TMAH) aqueous solution were performed, and the exposed ITO film was removed using an etching solution of ferric chloride. Subsequently, the resist film is removed using a resist stripping solution that is a 2% potassium hydroxide aqueous solution, and the first electrode 20a (the first extension portion 25a and the first connection portion 24a including the first connection portion 24a is formed on the first surface 10a. The second electrode precursor including the touch sensor unit 21a, the first wiring unit 22a), the first extension unit 25b, and the first wiring unit 22b was formed.

Subsequently, an insulating film 23 is formed on the first surface 10a. Here, a negative resist was applied to the entire first surface 10a using a spin coater. The obtained coating film was dried by heating to 100 ° C. for 5 minutes on a hot plate. Next, irradiation with 100 mJ / cm ² high-pressure mercury lamp light through a photomask having an opening at the position of the first connection portion 24a of the first electrode 20a, 30 seconds using a 0.2 mass% sodium bicarbonate aqueous solution Insulating film 23 was formed on first surface 10a by performing shower development, washing with water, and heat drying at 120 ° C. for 30 minutes in a hot air circulation oven. The obtained insulating film 23 was disposed on the first connection portion 24a of the first electrode 20a, and had a width of 60 μm, a length of 100 μm, and a film thickness of 2 μm.

Then, the 2nd connection part 24b is formed on the 1st surface 10a of the transparent substrate 10, and the 2nd electrode 20b is obtained. Here, a tin-doped indium oxide (ITO) film having a thickness of 30 nm was formed on the entire first surface 10a by sputtering. A positive resist was applied to the entire first surface 10a using a spin coater. The obtained coating film was dried by heating to 100 ° C. for 5 minutes on a hot plate. Next, irradiation with 100 mJ / cm ² of high-pressure mercury lamp light through a photomask having a light-shielding portion at a position corresponding to a part of the insulating film 23 and the adjacent extended portion 25b, 2.3 mass% of tetramethylammonium hydroxide Shower development and water washing for 60 seconds using (TMAH) aqueous solution were performed, and a resist film composed of a plurality of portions arranged at positions corresponding to a part of the insulating film 23 and the adjacent extended portion 25b was formed. Next, the exposed ITO film was removed using an etching solution of ferric chloride. Subsequently, the resist film is removed using a resist stripping solution that is a 2% potassium hydroxide aqueous solution, and is heated and dried at 120 ° C. for 30 minutes in a hot-air circulating oven, so that the second surface is formed on the first surface 10a. The connection part 24b was formed and the 2nd electrode 20b was obtained. The obtained second connection portion 24 b was connected to the adjacent second extension portion 25 b across the insulating film 23, and had a width of 5 μm, a length of 150 μm, and a film thickness of 270 μm on the insulating film 23. Further, the obtained second connection portion 24b had a sheet resistance value of 80Ω / □.

  Subsequently, a silver paste having a film thickness of 2 μm was applied using a printing method to form first and second extraction wiring portions 22a and 22b. The color filter substrate 110 with an electrode was obtained by the above method.

(Example 2)
Embodiment 2 of the present invention will be described below. In Example 2, the manufacturing process of the display device according to the first embodiment shown in FIG. 6 is illustrated. First, an alignment film was formed on the second surface 10b of the transparent substrate 10 of the electrode-attached color filter substrate 110 obtained in Example 1 using a printing method. On the other hand, a substrate 210 having a switching circuit including TFTs and a liquid crystal driving electrode was prepared, and an alignment film was formed on the electrode side surface of the substrate 210 using a printing method. Subsequently, rubbing treatment was performed on the alignment films of both substrates. Furthermore, the color filter substrate 110 with an electrode and the substrate 210 are bonded using a sealing material so that the alignment films face each other, and a liquid crystal material is injected into the gap between the two substrates to form a liquid crystal layer 230. A liquid crystal element 200 ′ attached to the substrate 110 was obtained.

  Subsequently, the liquid crystal driving electrode of the substrate 210 was connected to the liquid crystal driving external circuit, and the first electrode 20a and the second electrode 20b of the electrode-attached color filter substrate 110 were connected to the touch sensor driving external circuit. .

  Furthermore, the 2nd polarizing plate 700 and the cover 800 made from aluminosilicate glass were bonded together in this order to the 1st surface 10a of the transparent substrate 10 of the color filter substrate 110 with an electrode using the adhesive agent. Then, the first polarizing plate 400 and the backlight 500 are bonded together in this order on the surface of the liquid crystal element 200 ′ opposite to the surface on which the electrode-attached color filter substrate 110 is provided using an adhesive. A display device using the IPS liquid crystal element having the structure shown in FIG. The obtained display device did not include a defective portion and provided a normal display and touch position detection function.

(Example 3)
Embodiment 3 of the present invention will be described below. In Example 3, the manufacturing process of the color filter substrate 110 with an electrode including the transparent substrate 10 ′ having a laminated structure of aluminosilicate glass / COP is illustrated. First, using the same procedure as in Example 1, a color filter 30 composed of a black matrix and an RGB colored layer was formed on the second surface 10b of the transparent substrate 10 made of aluminosilicate glass having a thickness of 300 μm.

  Separately, a COP film having a thickness of 50 μm was prepared, and after forming an ITO film on one surface of the COP film, patterning was performed by a photolithography method. The thermal shrinkage of the COP film used at this time was 0.05% in the flow direction and 0.02% in the width direction. The ITO film formation position, film thickness, and patterning conditions are the same as those applied to the first surface 10a of the transparent substrate 10 in Example 1. Thereafter, the same procedure as in Example 1 was used to form the first electrode 20a and the second electrode 20b.

  Finally, using an adhesive, the first surface 10a of the transparent substrate 10 and the other surface of the COP film are bonded to each other, and a color with electrodes including a transparent substrate 10 'having a laminated structure of aluminosilicate glass / COP A filter substrate 110 was obtained.

Example 4
Embodiment 4 of the present invention will be described. In Example 4, a manufacturing process of a display device using the electrode-attached color filter substrate 110 ′ obtained in Example 3 is illustrated. A display device including an IPS liquid crystal element was formed by the same procedure as in Example 2 except that the electrode-attached color filter substrate 110 ′ obtained in Example 3 was used. The obtained display device did not include a defective portion and provided a normal display and touch position detection function. Further, the substrates could be bonded together without any positional deviation between the electrode pattern and the color filter pattern.

(Example 5)
Embodiment 5 of the present invention will be described below. In Example 5, the manufacturing process of the display device according to the first embodiment shown in FIG. 5 is illustrated. First, using the same procedure as in Example 1, the color filter 30 was formed on the second surface 10b of the transparent substrate 10 made of aluminosilicate glass having a thickness of 300 μm. Subsequently, an alignment film was formed on the color filter 30 on the second surface 10b using a printing method.

  Next, a substrate 210 having a switching circuit including TFTs and a liquid crystal driving electrode was prepared. An alignment film was formed on the electrode side surface of the substrate 210 by a printing method. Subsequently, rubbing treatment was performed on the alignment films of both substrates. Further, the transparent substrate 10 and the substrate 210 are bonded together using a sealing material so that the alignment films face each other, and a liquid crystal material is injected into a gap between the two substrates to form a liquid crystal layer 230. The attached liquid crystal element 200 was obtained.

  Subsequently, the first electrode 20a and the second electrode 20b are formed on the first surface 10a of the transparent substrate 10 using the same procedure as in Example 1, and the electrode-attached color filter substrate 110 to which the liquid crystal element 200 is attached. Got.

  Further, using the same procedure as in the second embodiment, the liquid crystal driving electrode of the substrate 210 is connected to the liquid crystal driving external circuit, and the first sensor 20a and the second electrode 20b of the electrode-attached color filter substrate 110 are driven by the touch sensor. The first polarizing plate 400, the second polarizing plate 700, the backlight 500, and the cover 800 made of aluminosilicate glass were bonded to each other, and a display device including an IPS liquid crystal element was obtained. . The obtained display device did not include a defective portion and provided a normal display and touch position detection function.

(Example 6)
Embodiment 6 of the present invention will be described below. In Example 6, a manufacturing process of a display device using the electrode-attached color filter substrate 110 including the transparent substrate 10 ′ having a laminated structure of aluminosilicate glass / COP is illustrated. First, using the same procedure as in Example 1, a color filter 30 composed of a black matrix and an RGB colored layer was formed on the second surface 10b of the transparent substrate 10 made of aluminosilicate glass having a thickness of 300 μm. Subsequently, an alignment film was formed on the color filter 30 by using a printing method.

  Next, a substrate 210 having a switching circuit including TFTs and a liquid crystal driving electrode was prepared. An alignment film was formed on the electrode side surface of the substrate 210 by a printing method. Subsequently, rubbing treatment was performed on the alignment films of both substrates. Further, the transparent substrate 10 and the substrate 210 are bonded together using a sealing material so that the alignment films face each other, and a liquid crystal material is injected into a gap between the two substrates to form a liquid crystal layer 230 and attached to the transparent substrate 10. A liquid crystal element 200 was obtained.

  Separately, a COP film having a thickness of 50 μm was prepared. After forming an ITO film on one surface of the COP film, patterning was performed by a photolithography method. The thermal contraction rate of the COP film, the formation position of the ITO film, the film thickness and the patterning conditions are the same as in Example 1. Thereafter, the same procedure as in Example 1 was used to form the first electrode 20a and the second electrode 20b.

  Finally, using an adhesive, the second surface 10b of the transparent substrate 10 and the other surface of the COP film are bonded to each other, and a color with an electrode including a transparent substrate 10 'having a laminated structure of aluminosilicate glass / COP A liquid crystal element 200 attached to the filter substrate 110 was obtained.

  Further, using the same procedure as in the second embodiment, the liquid crystal driving electrode of the substrate 210 is connected to the liquid crystal driving external circuit, and the first sensor 20a and the second electrode 20b of the electrode-attached color filter substrate 110 are driven by the touch sensor. The first polarizing plate 400, the second polarizing plate 700, the backlight 500, and the cover 800 made of aluminosilicate glass were bonded to each other, and a display device including an IPS liquid crystal element was obtained. . The obtained display device did not include a defective portion and provided a normal display and touch position detection function. Further, the substrates could be bonded together without any positional deviation between the electrode pattern and the color filter pattern.

DESCRIPTION OF SYMBOLS 10 Transparent substrate 20a 1st electrode 20b 2nd electrode 21a 1st touch sensor part 21b 2nd touch sensor part 22a 1st extraction wiring part 22b 2nd extraction wiring part 23 Insulating film 24a 1st connection part 24b 2nd connection part 25a 2nd 1 extended portion 25b second extended portion 30 color filter 110 color filter substrate with electrode 200 liquid crystal element 210, 220 substrate 230 liquid crystal layer 400 first polarizing plate 500 backlight 700 second polarizing plate 800 cover

Claims (19)

A transparent substrate having a first surface and a second surface provided on the opposite side of the first surface;
A color filter provided on the second surface;
One or more first electrodes formed on the first surface;
One or more second electrodes formed on the first surface;
One or more insulating films;
A color filter substrate with an electrode comprising:
Each of the one or more first electrodes includes a first touch sensor unit having a plurality of first extension parts and one or more first connection parts, and a first lead-out wiring part. The first extension part is connected by the first connection part,
Each of the one or more second electrodes includes a second touch sensor unit having a plurality of second extension parts and one or more second connection parts, and a second lead-out wiring part. The second extension part is connected by the second connection part,
The first touch sensor unit and the second touch sensor unit are formed so as to intersect at the first connection unit and the second connection unit,
Each of the one or more insulating films is formed on the first connection portion so as to cover the first connection portion at a portion where the first connection portion and the second connection portion intersect,
The color filter substrate with an electrode, wherein the second connection portion is formed on the insulating film so as to straddle the insulating film.   The color filter substrate with an electrode according to claim 1, wherein the transparent substrate contains at least one material selected from the group consisting of glass and organic resin.   The color filter substrate with an electrode according to claim 1, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates.   4. The color filter substrate with an electrode according to claim 1, wherein the sub-substrate is a cyclic olefin copolymer.   The electrode-attached color filter substrate according to claim 1, wherein the first touch sensor unit and the second touch sensor unit are made of tin-doped indium oxide. A color filter substrate with an electrode according to any one of claims 1 to 5,
A display element attached to the bottom surface of the color filter;
A display device comprising: A first polarizing plate attached to the bottom surface of the display element;
A second polarizing plate attached on the first surface of the transparent substrate;
The display device according to claim 6, further comprising: The color filter and the display element are attached before the one or more first electrodes, the one or more second electrodes, and the one or more insulating films are formed on the first surface. And
The display device according to claim 6, wherein in the attached state, slimming is performed on the first surface of the transparent substrate and the bottom surface of the display element.   The display device according to claim 6, wherein the display element includes a liquid crystal element or an EL element. A method of manufacturing a color filter substrate with electrodes,
A first step of forming a color filter on the second surface of the transparent substrate having a first surface and a second surface provided on the opposite side of the first surface;
One or a plurality of first electrodes including a first touch sensor unit and a first extraction wiring portion, and one or a plurality of second electrode precursors including a plurality of second extension portions and a second extraction wiring portion are the first. 2nd process formed on a surface, Comprising: The said 1st touch sensor part has a some 1st extension part, and a 1 or several 1st connection part, and two said 1st extension that adjoins. Part is connected by the first connection part, a second step,
A third step of forming an insulating film on each of the first connection portions of the one or more first electrodes;
Fourth step of obtaining one or a plurality of second electrodes from the one or a plurality of second electrode precursors by forming one or a plurality of second connection portions on the insulating film so as to straddle the insulating film. Two adjacent second extension portions of the second electrode precursor are connected by the second connection portion, and the second extension portions and the one or more second connection portions are connected to each other by the second connection portion. A fourth step in which a two-touch sensor unit is configured;
Including
The step of forming the insulating film is a step of forming the insulating film on the first connection portion so as to cover the first connection portion at a portion where the first connection portion and the second connection portion intersect. ,
The manufacturing method, wherein the first touch sensor unit and the second touch sensor unit are formed so as to intersect at the first connection unit and the second connection unit. A method for manufacturing a display device, comprising:
A first step of forming a color filter on the second surface of the transparent substrate having a first surface and a second surface provided on the opposite side of the first surface;
One or a plurality of first electrodes including a first touch sensor unit and a first extraction wiring portion, and one or a plurality of second electrode precursors including a plurality of second extension portions and a second extraction wiring portion are the first. 2nd process formed on a surface, Comprising: The said 1st touch sensor part has a some 1st extension part, and a 1 or several 1st connection part, and two said 1st extension that adjoins. Part is connected by the first connection part, a second step,
A third step of forming an insulating film on each of the first connection portions of the one or more first electrodes;
Fourth step of obtaining one or a plurality of second electrodes from the one or a plurality of second electrode precursors by forming one or a plurality of second connection portions on the insulating film so as to straddle the insulating film. Two adjacent second extension portions of the second electrode precursor are connected by the second connection portion, and the second extension portions and the one or more second connection portions are connected to each other by the second connection portion. A fourth step in which a two-touch sensor unit is configured;
Including
The step of forming the insulating film is a step of forming the insulating film on the first connection portion so as to cover the first connection portion at a portion where the first connection portion and the second connection portion intersect. ,
The first touch sensor unit and the second touch sensor unit are formed so as to intersect at the first connection unit and the second connection unit,
The manufacturing method further includes a step of attaching a display element to the bottom surface of the color filter after the first step and before the second step or after the fourth step. Manufacturing method.   The manufacturing method further includes a step of attaching a first polarizing plate to a bottom surface of the display element and attaching a second polarizing plate to the first surface of the transparent substrate after the step of attaching the display element. The manufacturing method according to claim 11. The step of attaching the display element is a step of attaching the display element on the color filter after the first step and before the second step.
In the manufacturing method, after the step of attaching the display element and before the second step, the slimming process is performed on the first surface of the transparent substrate and the bottom surface of the display element in the attached state. The manufacturing method according to claim 11, further comprising a step of performing the step.   The manufacturing method according to claim 11, wherein the display element includes a liquid crystal element or an EL element. A plurality of element regions independent of other regions are provided on the first surface of the transparent substrate, and each of the plurality of element regions includes the one or more first electrodes and the one or more element regions. A second electrode is formed,
15. The manufacturing method according to claim 11, further comprising a step of cutting the transparent substrate for each element region.   The manufacturing method according to claim 11, wherein the transparent substrate includes at least one material selected from the group consisting of glass and organic resin.   The manufacturing method according to claim 11, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates.   The manufacturing method according to claim 11, wherein the first touch sensor unit and the second touch sensor unit are made of tin-doped indium oxide.   The manufacturing method according to claim 11, wherein the second step is performed using one or a plurality of techniques selected from photolithography and printing.