WO2016098268A1

WO2016098268A1 - Electrode-equipped color filter substrate, display device including that substrate and method for manufacturing that substrate

Info

Publication number: WO2016098268A1
Application number: PCT/JP2015/003469
Authority: WO
Inventors: 栗原　正幸
Original assignee: 凸版印刷株式会社
Priority date: 2014-12-18
Filing date: 2015-07-09
Publication date: 2016-06-23
Also published as: TW201629589A

Abstract

The present invention addresses the problem of providing an electrode-equipped color filter substrate that makes it possible to provide a thinner and lighter weight display device. This electrode-equipped color filter substrate comprises: a transparent substrate that has a first surface having a pattern-shaped groove and a second surface provided with color filters; one or a plurality of first electrodes that each include a wiring portion and a sensor portion which has a plurality of extending portions and a straight-line portion that connects adjacent extending portions to each other; one or a plurality of insulating films that each include a wiring portion and a sensor portion which has a plurality of extending portions and a connecting portion that connects adjacent extending portions to each other; and one or a plurality of second electrodes. The extending portions and the wiring portions of the first and second electrodes lie in a groove. Each insulating film is formed on the straight line portion of the first electrode. The first electrode and the second electrode intersect at the straight line portion of the first electrode and a connection portion of the second electrode. The connection portion of the second electrode is formed across the insulating film.

Description

Color filter substrate with electrodes, display device including the substrate, and method for manufacturing the substrate

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 color filter substrate with electrodes.

In recent years, color liquid crystal display devices have formed a large market for 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.

Touch panels are 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. .

Conventional touch panel type liquid crystal displays are generally manufactured by separately manufacturing a touch panel substrate having touch panel electrodes and a color filter substrate having color filters, and bonding the substrates together (for example, patents). Reference 1). However, due to the occurrence of interference fringes due to subtle deviations between the touch panel electrodes formed in stripes and the color filters formed in stripes, or because the touch panel electrodes and the color filters are formed at different depths. There is a problem in display performance such as generation of parallax when operated from an oblique direction. Technology to form touch panel electrodes and color filters on the front and back surfaces of the same glass substrate for the purpose of reducing the bonding process between the touch panel substrate and the color filter substrate, and suppressing the deterioration of optical properties due to the gaps generated during the bonding. Have been studied (see, for example, Patent Documents 2 and 3).

The touch panel type liquid crystal display includes an in-cell type in which a touch panel function is built in a liquid crystal element (LCD cell) (specifically, on a thin film transistor (TFT) substrate) and an outside of the LCD cell (for example, a polarizing plate). And an on-cell type in which a touch panel function is built in between the color filter substrate and the color filter substrate. In-cell type touch panel type liquid crystal display displays by reducing the yield of LCD cells by incorporating the touch sensor function inside the pixel on the TFT substrate, and by reducing the area of the effective display area caused by the electrode for the touch sensor in the pixel There is concern that image quality will deteriorate. On the other hand, in the on-cell touch panel type liquid crystal display, the electrode pattern for the touch sensor is formed between the polarizing plate and the color filter substrate, so that the yield of the LCD cell can be maintained. Further, since the area of the effective display area in the pixel of the LCD cell (TFT substrate) does not decrease, display image quality is hardly deteriorated.

JP 2007-178758 A JP 2008-9750 A JP 2010-72584 A

In the conventional on-cell type touch panel type liquid crystal display, the electrode pattern for the touch panel includes a sensor part formed of a transparent conductive oxide (such as indium-tin oxide (ITO)) and a wiring part formed of a low resistance metal. It consists of and. Therefore, it is necessary to form the sensor part and the wiring part by separate processes. Therefore, even if the yield of the LCD cell can be maintained, as a whole on-cell type touch panel type liquid crystal display, the yield tends to decrease due to an increase in the number of processes.

The present invention has been made in order to solve the above-described problems, and reduces the manufacturing process by collectively forming the sensor portion and the wiring portion, and improves the yield of the touch panel type liquid crystal display as a whole. For the purpose. Furthermore, an object of the present invention is to suppress the occurrence of parallax when operated from an oblique direction by shortening the distance between the color filter and the touch panel electrode.

The color filter substrate with an electrode according to the first embodiment of the present invention has a first surface and a second surface opposite to the first surface, and has a patterned groove on the first surface. And a color filter on the second surface, and one or a plurality of electrodes including a sensor portion and a wiring portion in the pattern-shaped groove. Here, the transparent substrate may include at least one material selected from the group consisting of glass and organic resin. Alternatively, the transparent substrate may have a stacked structure of a plurality of sub-substrates. Furthermore, the electrode may be formed of a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium.

The color filter substrate with an electrode according to the second embodiment of the present invention has a first surface and a second surface opposite to the first surface, and a transparent substrate having a patterned groove on the first surface. A color filter on the second surface, one or more first electrodes, one or more insulating films, and one or more second electrodes, each of the first electrodes being A sensor portion having a plurality of extension portions and one or a plurality of straight portions, and a wiring portion, and two adjacent extension portions are connected by a straight portion, and the extension portion, the straight portion, and the wiring portion Exists in the groove, and each of the second electrodes includes a sensor part having a plurality of extension parts and one or a plurality of connection parts, and a wiring part, and two adjacent extension parts are connected to each other. Connected to each other, and the extension part and the wiring part exist in the groove. Each of the insulating films is formed on a straight portion of the first electrode, and the first electrode and the second electrode intersect at a connecting portion of the straight portion and the second electrode of the first electrode. The connecting portion of the second electrode is formed across the insulating film. Here, the transparent substrate may include at least one material selected from the group consisting of glass and organic resin. Alternatively, the transparent substrate may have a stacked structure of a plurality of sub-substrates. Furthermore, the electrode may be formed of a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium.

The method for manufacturing a color filter substrate with an electrode according to a third embodiment of the present invention is a method for manufacturing the color filter substrate with an electrode according to the first embodiment, wherein the first surface and the side opposite to the first surface. Preparing a transparent substrate having the second surface, forming a color filter on the second surface of the transparent substrate, forming a patterned groove on the first surface of the transparent substrate, Forming one or a plurality of electrodes by attaching a metal material in the groove, the electrode comprising a sensor part and a wiring part, and forming the pattern-like groove by dicing, Scribe processing, water jet processing, air blast processing, sand blast processing, laser processing, embossing, etching, imprint lithography, and photo using photosensitive resin Which comprises carrying out using one or more techniques selected from the group consisting of Seo chromatography. Here, the transparent substrate may include at least one material selected from the group consisting of glass and organic resin. Alternatively, the transparent substrate may have a stacked structure of a plurality of sub-substrates. Furthermore, the electrode may be formed of a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium. Moreover, the manufacturing method of this embodiment may further include the process of cutting the said transparent substrate and obtaining the color filter substrate with a some electrode.

The method for manufacturing a color filter substrate with an electrode according to a fourth embodiment of the present invention is a method for manufacturing the color filter substrate with an electrode according to the second embodiment, wherein the first surface and the side opposite to the first surface. Preparing a transparent substrate having the second surface, forming a color filter on the second surface of the transparent substrate, forming a patterned groove on the first surface of the transparent substrate, A plurality of first electrodes including a sensor unit having a plurality of extended portions and one or a plurality of straight portions by attaching a metal material in the groove, and a plurality of extended portions and a wiring portion Forming a plurality of second electrode precursors including: a step of forming an insulating film on a straight portion of the plurality of first electrodes; and attaching a metal material on the insulating film to form the insulation Forming a connecting portion across the membrane, adjacent to the second electrode precursor A plurality of second electrodes including a sensor part having a plurality of extension parts and one or a plurality of connection parts, and a wiring part. The process of forming pattern-like grooves is from dicing, wheel scribe, water jet, air blast, sand blast, laser processing, embossing, etching, imprint lithography, and photolithography using photosensitive resin. It is carried out using one or more techniques selected from the group consisting of: Here, the transparent substrate may include at least one material selected from the group consisting of glass and organic resin. Alternatively, the transparent substrate may have a stacked structure of a plurality of sub-substrates. Furthermore, the electrode may be formed of a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium. Moreover, the manufacturing method of this embodiment may further include the process of cutting the said transparent substrate and obtaining the color filter substrate with a some electrode.

A display device according to a fifth embodiment of the present invention includes the color filter substrate with an electrode according to the first embodiment or the second embodiment, and a display element selected from the group consisting of a liquid crystal element and an EL element. It is characterized by.

The manufacturing method of the display device of the sixth embodiment of the present invention includes a step of forming a color filter substrate with an electrode by the method of the third embodiment or the fourth embodiment, and a second surface of the color filter substrate with an electrode. And a step of attaching a display element selected from the group consisting of a liquid crystal element and an EL element to the side. The method of the present embodiment may further include a step of cutting the color filter substrate with electrodes and the stacked body of the display elements to obtain a plurality of display devices.

One modification of the sixth embodiment of the present invention manufactures a display device including the electrode-attached color filter substrate of the first embodiment and a display element selected from the group consisting of a liquid crystal element and an EL element. A method comprising: preparing a transparent substrate having a first surface and a second surface opposite to the first surface; forming a color filter on a second surface of the transparent substrate; and the color Attaching a display element selected from the group consisting of a liquid crystal element and an EL element on the filter; forming a patterned groove on the first surface of the transparent substrate; and depositing a metal material in the groove. Forming one or a plurality of electrodes, wherein the electrode comprises a sensor portion and a wiring portion, and the step of forming the pattern-like groove includes dicing, wheel scribe, water And one or more techniques selected from the group consisting of photolithographic processing, air blasting, sand blasting, laser processing, embossing, etching, imprint lithography, and photolithography using a photosensitive resin It is characterized by.

Another modification of the sixth embodiment of the present invention manufactures a display device including the electrode-attached color filter substrate of the second embodiment and a display element selected from the group consisting of a liquid crystal element and an EL element. A method comprising: preparing a transparent substrate having a first surface and a second surface opposite to the first surface; forming a color filter on a second surface of the transparent substrate; and the color Attaching a display element selected from the group consisting of a liquid crystal element and an EL element on the filter; forming a patterned groove on the first surface of the transparent substrate; and depositing a metal material in the groove. A plurality of first electrodes including a plurality of extending portions and one or a plurality of linear portions, and a plurality of first electrodes including a wiring portion, and a plurality of second electrode precursors including a plurality of extending portions and a wiring portion. Forming a body and the compound Forming an insulating film on the straight portion of the first electrode, and depositing a metal material on the insulating film to form a connection portion straddling the insulating film, and adjacent to the second electrode precursor. Connecting the two extension parts by the connection part, obtaining a plurality of second electrodes including a sensor part having a plurality of extension parts and one or more connection parts, and a wiring part, and The process of forming pattern-like grooves is from dicing, wheel scribe, water jet, air blast, sand blast, laser processing, embossing, etching, imprint lithography, and photolithography using photosensitive resin. It is carried out using one or more techniques selected from the group consisting of:

The color filter substrate with electrodes of the present invention makes it possible to provide a display device that is thinner and lighter than when the touch sensor electrodes are formed on a separate substrate. Moreover, the color filter substrate with an electrode of the present invention can suppress the occurrence of parallax when operated from an oblique direction by shortening the distance between the color filter and the touch panel electrode. In addition, the method for manufacturing a color filter substrate with an electrode according to the present invention enables simplification of the manufacturing method and reduction in manufacturing cost by simultaneously forming the sensor portion and the wiring portion of the electrode for the touch sensor. .

It is a typical top view of the color filter substrate with an electrode of the 1st embodiment of the present invention. FIG. 2 is a schematic cross-sectional view along the cutting line II-II of the color filter substrate with an electrode according to the first embodiment of the present invention. It is a typical top view of the color filter substrate with an electrode of a 2nd embodiment of the present invention. FIG. 4 is a schematic cross-sectional view taken along a cutting line IV-IV of a color filter substrate with an electrode according to a second embodiment of the present invention. FIG. 5 is a schematic cross-sectional view along a cutting line VV of a color filter substrate with an electrode according to a second embodiment of the present invention. It is typical sectional drawing of the liquid crystal display device of the 5th Embodiment of this invention. It is typical sectional drawing of the liquid crystal display device of the modification of the 5th Embodiment of this invention.

The color filter substrate with an electrode according to the first embodiment of the present invention has a first surface and a second surface opposite to the first surface, and has a patterned groove on the first surface. And a color filter on the second surface, and one or a plurality of electrodes including a sensor portion and a wiring portion in the pattern-shaped groove. The structural example of the color filter board | substrate with an electrode of this embodiment was shown in FIG.1 and FIG.2. 1 and 2, three electrodes 20 are formed on the first surface of the transparent substrate 10, and a color filter 30 is formed on the second surface opposite to the first surface. Each of the electrodes 20 includes a sensor unit 21 and a wiring unit 22 for connecting the sensor unit 21 to an external drive circuit.

The transparent substrate 10 of this embodiment 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, and 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 embodiment is used as a constituent element of a touch panel, the touch panel is a capacitive type. Unlike the resistive film type touch panel, it is not necessary to consider the strain due to the application of external force, so the choice of the material and thickness of the transparent substrate 10 is widened. In consideration of heat resistance in the manufacturing process, it is desirable to form the transparent substrate 10 with glass. The groove formed on the first surface of the transparent substrate 10 has a width and depth corresponding to an electrode 20 described later, and is formed at the position of the electrode 20.

The transparent substrate 10 of this embodiment 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 laminated structure of two sub-substrates is used, the sub-substrate on the first surface side for forming the grooves and the electrodes 20 is formed of a material suitable for forming the grooves, and the color filter is provided on the second surface side. The sub-substrate can be formed of a material having characteristics suitable for forming a color filter. 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 of the present embodiment may have a laminated structure in which one or more layers are provided on a self-supporting sub-substrate.

The electrode 20 of the present embodiment includes a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium. Each of the electrodes 20 of the present invention includes a sensor part 21 and a wiring part 22. The sensor unit 21 forms a part of the sensor of the capacitive touch filter. Since the above-described opaque metal material is used, the sensor unit 21 of the present invention is composed of fine lines that define the outline and fine lines that are arranged in a lattice pattern inside the sensor unit 21, and visible light is transmitted through the sensor unit 21. It is desirable to impart sex. The term “lattice” in the present invention means that it is composed of one or more fine lines extending in the first direction and one or more fine lines extending in the second direction intersecting the first direction. To do. Preferably, the second direction is a direction orthogonal to the first direction. The fine wires constituting the sensor unit 21 may have a width of 0.1 to 10 μm, preferably 0.3 to 3 μm. By having a width within this range, prevention of disconnection when transient voltage such as static electricity occurs, maintenance of invisibility of thin line, high visible light transmittance of sensor, and reduction of electrical resistance of thin line are realized. It becomes possible to do. Here, it is desirable to ensure the visible light transmittance of the sensor unit 21 by setting the ratio of the total area of the fine lines to the area of the sensor unit 21 in the observation from the vertical direction of the transparent substrate 10 within a range of 0.1 to 10%. . Further, the thin wire constituting the sensor unit 21 may have a thickness of 0.1 to 10 μm, preferably 0.3 to 3 μm. By having a thickness within this range, it is possible to prevent poor conduction and prevent the transparent substrate 10 from cracking. On the other hand, the wiring part 22 has a function of electrically connecting the sensor part 21 to an external circuit (not shown). The wiring part 22 may also have the same width and thickness as the fine lines constituting the sensor part 21. In a normal use, since the wiring portion exists in an area other than the display area, the wiring portion may have a width of 5 to 50 μm, preferably 10 to 30 μm for the purpose of achieving a lower electric resistance value than maintaining invisibility. Good.

The electrode 20 of this embodiment can form both the sensor part 21 and the wiring part 22 with the same material. Since a transparent conductive oxide such as ITO is not used for the sensor portion, an increase in the resistance value of the entire electrode 20 due to a relatively high resistivity of the transparent conductive oxide can be suppressed. In addition, since there is no interface between the transparent conductive oxide and the low-resistance metal material, an adverse effect such as electromigration can be eliminated. Furthermore, since the entire electrode 20 can be formed in a single process, the manufacturing cost can be reduced.

The color filter 30 of the present invention 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 of the present invention 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.

The color filter substrate with an electrode according to the second embodiment of the present invention has a first surface and a second surface opposite to the first surface, and a transparent substrate having a patterned groove on the first surface. And a color filter on the second surface, one or more first electrodes, an insulating film, and one or more second electrodes, each of the first electrodes having a plurality of extension portions. And one or a plurality of linear portions, and two adjacent extended portions are connected by a linear portion, and the extended portion, the linear portion, and the wiring portion are connected to each other in the groove. Each of the second electrodes includes a sensor part having a plurality of extension parts and one or more connection parts, and a wiring part, and two adjacent extension parts are connected by the connection parts, The extension part and the wiring part are present in the trench, and the insulating film The first electrode and the second electrode intersect each other at the connecting portion of the first electrode and the second electrode, and the second electrode is connected to the first electrode. The portion is formed across the insulating film.

Examples of the configuration of the color filter substrate with electrodes of the present embodiment are shown in FIGS. 3 to 5, the first surface 110a of the transparent substrate 10 is formed with a first electrode 20a composed of two partial electrodes and a second electrode 20b composed of two partial electrodes. The color filter 30 is formed on the second surface 110b opposite to 110a. Each partial electrode of the first electrode 20a includes a sensor portion 21a including three extended portions 25a and a linear portion 26 between adjacent extended portions 25a, and a wiring portion 22a. Each partial electrode of the second electrode 20b includes a sensor part 21b including a connection part 24 formed between the three extension parts 25b and the adjacent extension part 25b and formed on the insulating film 23, and a wiring part. 22b.

The transparent substrate 10 and the color filter 30 of the present embodiment can be the same as the transparent substrate and the color filter of the first embodiment.

The first electrode 20a of the present embodiment has the same configuration as that of the electrode of the first embodiment, except that the sensor unit 21a includes an extended portion 25a and a linear portion 26. The first electrode 20a is formed in the groove formed in the first surface 110a of the transparent substrate 10 in which the sensor portion 21a (that is, the extended portion 25a and the straight portion 26) and the wiring portion 22a are all formed. Moreover, the sensor part 21a and the wiring part 22a can be formed using the material similar to 1st Embodiment.

Each of the extended portions 25a is preferably composed of fine lines that define the outline and fine lines that are arranged in a lattice pattern inside. Similar to the first embodiment, the thin wire constituting the extension 25a has a width of 0.1 to 10 μm, preferably 0.3 to 3 μm, and a width of 0.1 to 10 μm, preferably 0.3 to 3 μm. It may have a thickness. The extension unit 25a serves as an electrode (hereinafter, referred to as “unit electrode”) that determines the minimum unit whose position can be detected on the touch panel. It is desirable that the extended portion 25a has a quadrangular or hexagonal shape so that the extended portion 25a can be uniformly disposed in the entire display area together with the extended portion 25b of the second electrode. For example, the rectangular extension 25a shown in FIG. 3 may have a dimension of each side in the range of 1 to 20 mm.

The straight line part 26 constitutes a sensor part 21a extending in one direction by connecting adjacent extension parts 25a. Since the straight line portion 26 is generally formed in the display area, it is desirable that the straight line portion 26 be invisible like the fine lines constituting the extended portion 25a. In addition, since the region where the straight portion 26 and the connecting portion 24 intersect becomes a sensor insensitive region, it is desirable to make the straight portion 26 thinner as long as desired conductivity is obtained. The straight portion 26 desirably has a width of 0.1 to 10 μm, preferably 0.3 to 3 μm. The straight portion 26 desirably has a thickness of 0.1 to 10 μm, preferably 0.3 to 3 μm.

The wiring part 22a has a function of electrically connecting the sensor part 21a to an external circuit (not shown). The wiring part 22a may also have the same width and thickness as the thin line that forms the sensor part 21a. In a normal application, the wiring portion 22a exists in an area other than the display area, and therefore has a width of 5 to 50 μm, preferably 10 to 30 μm for the purpose of achieving a lower electric resistance value than maintaining invisibility. Also good.

The second electrode 20b of the present embodiment may have the same configuration as that of the first electrode 20a except that the connecting portion 24 is used instead of the straight portion 26 and the extending direction of the sensor portion 22b is different. Good. In the second electrode 20b, the connection portion 24 does not exist inside the groove of the transparent substrate 10, but is provided on the upper surface and side surfaces of the insulating film 23 provided on the straight portion 26 of the first electrode 20a. On the other hand, the extended portion 25b and the wiring portion 22b of the second electrode 20b are formed in the groove of the transparent substrate 10 similarly to the first electrode 20a. The extended portion 25b and the wiring portion 22b of the second electrode 20b have the same configuration as the extended portion 25a and the wiring portion 22a of the first electrode 20a, respectively.

The insulating film 23 is provided on the straight portion of the first electrode 20a in order to prevent the first electrode 20a and the second electrode 20b from being in electrical contact. 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 connection part 24 is formed of a conductive material and electrically connects the adjacent extension parts 25b. Desirably, the conductive material forming the connection 24 is a material that can be removed without affecting the conductive material filled in the trenches. In one configuration example of the connection portion, the connection portion 24 may have a laminated structure of a Mo film with a thickness of 3.5 nm, an Al film with a thickness of 200 nm, and a Mo film with a thickness of 3.5 nm. The extended portion 25b electrically connected by the connecting portion 24 constitutes a second electrode sensor portion 21b extending in a direction intersecting with the first electrode sensor portion 21a. Preferably, as shown in FIGS. 3 to 5, the sensor portion 21b of the second electrode extends in a direction orthogonal to the sensor portion 21a of the first electrode. The width and film thickness of the connection portion 24 can be determined in consideration of realization of invisibility, maintenance of desired conductivity, and the like.

3rd Embodiment of this invention is a method for manufacturing the color filter substrate with an electrode of 1st Embodiment, Comprising: It has a 1st surface and the 2nd surface on the opposite side to the said 1st surface. Preparing a transparent substrate, forming a color filter on the second surface of the transparent substrate, forming a patterned groove on the first surface of the transparent substrate, and attaching a metal material in the groove A step of forming one or a plurality of electrodes, wherein the electrode includes a sensor portion and a wiring portion, and the step of forming the pattern-like groove includes dicing processing, wheel scribing processing, water jet processing, Select from the group consisting of air blasting, sand blasting, laser processing, embossing, etching, imprint lithography, and photolithography using photosensitive resin Which comprises carrying out using one or more techniques. Note that the steps can be performed in any order, provided that the metal material is deposited in the groove after the groove is formed on the first surface.

First, a transparent substrate 10 having a first surface and a second surface opposite to the first surface is prepared. The transparent substrate 10 is 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.

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.

Formation of the groove on the first surface of the transparent substrate 10 can be performed by any chemical means or physical means known in the art. Examples of chemical means that can be used include etching, imprint lithography, photolithography using a photosensitive resin, and the like. Examples of physical means that can be used include dicing, wheel scribe, water jet, air blast, laser, emboss, and the like. The groove is formed at a position corresponding to the electrode 20 with a predetermined depth and width.

Subsequently, a metal material is deposited in the groove formed on the first surface to form one or a plurality of electrodes 20. Each of the electrodes 20 includes a sensor unit 21 and a wiring unit 22. For the adhesion of the metal material, a conductive paste containing a metal material and an organic binder is applied to the first surface, the conductive paste adhered to a portion other than the groove is removed, and the conductive paste in the groove is heated. Can be implemented. The metal material contained in the conductive paste may contain one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium. The organic binder may comprise any material known in the art. The conductive paste may further include any material known in the art, such as a vehicle or an inorganic binder.

Application of the conductive paste can be performed by any means as long as the conductive paste is applied to the first surface of the transparent substrate 10 and the grooves can be completely filled with the conductive paste. Here, it is desirable to use a means capable of applying the conductive paste with a uniform film thickness. For example, means such as spin coating, roll coating, dip coating can be used. Next, the removal of the conductive paste attached to the portion other than the groove can be performed by moving the doctor blade or the like while pressing the doctor blade or the like on the first surface of the transparent substrate 10. In order to remove the conductive paste that is slightly removed in portions other than the grooves on the first surface, a wiping process or the like may be further performed. The heating of the conductive paste in the groove can be carried out for a time and at a temperature sufficient to remove the organic binder in the conductive paste.

In the method of the present embodiment, the electrodes 20 are collectively formed in the groove formed in the first surface. In other words, the sensor unit 21 and the wiring unit 22 are formed of the same material and are formed simultaneously. Thereby, the formation process of the electrode 20 can be simplified and an increase in manufacturing cost can be prevented. Further, the patterning of the electrode 20 is achieved by forming a groove on the first surface of the transparent substrate 10 instead of etching the conductive material uniformly formed on the substrate. For this reason, it is possible to form the electrode 20 with high definition (thin line width and narrow interval) compared with the case where the conductive material is etched. Furthermore, since the formed electrode 20 is formed in the groove of the transparent substrate, it is possible to sufficiently suppress the deformation of the electrode 20 caused by passing an electric current.

In this embodiment, a plurality of element regions that can be divided may be formed on one transparent substrate 10. The “element region” means a region that has the color filter 30 and one or a plurality of electrodes 20 independent of other regions and can function as a color filter substrate with electrodes by cutting. Then, a plurality of element regions can be cut to form a plurality of electrode-attached color filter substrates 100. A plurality of color filter substrates 100 with electrodes can be efficiently formed using one transparent substrate 10. The cutting of the element region 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.

4th Embodiment of this invention is a method for manufacturing the color filter substrate with an electrode of 2nd Embodiment, Comprising: It has a 1st surface and the 2nd surface on the opposite side to the said 1st surface. Preparing a transparent substrate, forming a color filter on the second surface of the transparent substrate, forming a patterned groove on the first surface of the transparent substrate, and attaching a metal material in the groove A plurality of first electrodes including a plurality of extending portions and one or a plurality of linear portions, and a plurality of first electrodes including a wiring portion, and a plurality of second electrodes including a plurality of extending portions and a wiring portion. Forming a precursor; forming an insulating film on the straight portions of the plurality of first electrodes; and depositing a metal material on the insulating film to form a connecting portion across the insulating film. And two adjacent extended portions of the second electrode precursor are connected to the connecting portion. Forming a plurality of second electrodes including a sensor unit having a plurality of extension portions and one or a plurality of connection portions, and a wiring portion, and forming the patterned groove, One or more selected from the group consisting of dicing processing, wheel scribing processing, water jet processing, air blast processing, sand blast processing, laser processing, embossing, etching, imprint lithography, and photolithography using a photosensitive resin It implements using the technique of characterized by the above-mentioned.

In the present embodiment, the step of preparing the transparent substrate 10 and the step of forming the color filter on the second surface of the transparent substrate 10 can be performed in the same manner as in the third embodiment.

Further, the step of forming the pattern-like groove on the first surface of the transparent substrate is performed in the same manner as in the third embodiment, except that the groove corresponding to the extended portion and the wiring portion of the second electrode 20b is provided. be able to. More specifically, in addition to the plurality of extended portions 25a for the first electrode 20a, the straight portion 26 connecting the adjacent extended portions 25a, and the position corresponding to the wiring portion 22a, the second electrode 20b Grooves are formed at positions corresponding to the extended portion 25b and the wiring portion 22b. A part of the groove corresponding to the extended part 25b is connected to the wiring part 22b, but most of the groove corresponding to the extended part 25b is formed without being connected to other grooves.

Subsequently, adhesion of the metal material into the groove is performed in the same manner as in the third embodiment. At this stage, the plurality of first electrodes 20a including the plurality of extended portions 25a, the linear portions 26 connecting the adjacent extended portions 25a, and the wiring portions 22a are completed. On the other hand, the plurality of second electrodes 20b are not formed with connection portions 24 that connect the plurality of extended portions 25b, and are in the form of second electrode precursors at this stage.

Next, an insulating film 23 is formed on the straight portion 26 of the first electrode 20a. The insulating film 23 is formed in a pattern so that the photosensitive material described in the second embodiment is applied to the entire first surface of the transparent substrate 10 and the photosensitive material remains in a predetermined region including the straight portion 26. It is formed by irradiating light and then developing. For example, when a UV curable coating composition is used, the UV light is irradiated to a region including the straight portion 20 directly above. On the other hand, when a positive photosensitive material is used, light having a given wavelength is irradiated on most of the first surface excluding the region including the portion directly above the straight portion 20. Development can be performed using an appropriate liquid depending on the photosensitive material used.

Next, a metal material is deposited on the insulating film 23 to form a connecting portion 24 that straddles the insulating film 23, and the two adjacent extended portions 25b of the second electrode precursor are connected by the connecting portion 24, The second electrode 20b is obtained. 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.

Also in this embodiment, a plurality of element regions that can be divided may be formed on one transparent substrate 10. The plurality of element regions can be cut to form a plurality of electrode-attached color filter substrates 110. A plurality of color filter substrates 110 with electrodes can be efficiently formed using one transparent substrate 10. The cutting of the element region 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.

A fifth embodiment of the present invention is a display device including the color filter with electrodes and the display element of the first or second embodiment. The display element is selected from the group consisting of a liquid crystal element and an EL element.

First, a display device using a color filter substrate with electrodes of the second embodiment and a liquid crystal element as a display element will be described. FIG. 6 shows one configuration example of the display device of this embodiment.

In the example of FIG. 6, the second polarizing plate 700 and the cover 800 are laminated on the first surface 110a of the electrode-attached color filter substrate 110 of the second embodiment, and the liquid crystal element 200 and the first polarizing plate are formed on the second surface 110b side. 400 and the backlight 500 are 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.

The alignment film preferably constitutes 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 220 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 display element 200 may be omitted, and the liquid crystal driving electrode and the alignment film may be provided on the color filter 30 of the electrode-attached color filter substrate 110 of the present invention. FIG. 7 shows a configuration example of this modification. In the configuration of FIG. 7, a substrate 210 including pixel electrodes, a liquid crystal layer 230, and a color filter substrate 110 with electrodes including an electrode for liquid crystal switching and an alignment film are stacked in this order. 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.

Also, in an IPS type element that switches liquid crystal molecules in a plane, an electrode can be provided on only one of the substrate 210 and the substrate 220, and the electrode on the other substrate can be omitted. In the IPS type element, the other substrate from which the electrode is omitted can be replaced with the electrode-attached color filter substrate 100 of the present invention. For example, when an electrode is provided only on the substrate 210, 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 each layer existing below it. In addition, since the display content of the display 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 sensor electrodes of the projected capacitive touch panel. On the other hand, when the color filter substrate 100 with an electrode according to the first embodiment is used instead of the color filter substrate with an electrode 110 according to the second embodiment, an electrode provided on the surface of either the first polarizing plate 700 or the cover 800. By combining these, a projected capacitive touch panel can be obtained. Here, the electrode 20 of the electrode-attached color filter substrate 100 is formed from a plurality of partial electrodes extending in one direction, and the electrode provided on the surface of either the first polarizing plate 700 or the cover 800 is in the intersecting direction. You may form from the several partial electrode extended.

Alternatively, when the electrode-attached color filter substrate 100 of the first embodiment is used in place of the electrode-attached color filter substrate 110 of the second embodiment, the electrode 20 includes a sensor unit having a shape corresponding to the display region, and 3 It is possible to obtain a surface-type capacitive touch panel by configuring with at least four (preferably four) wiring portions.

On the other hand, in the color filter substrate 110 with an electrode according to the second embodiment and a display device using an EL element as a display element, the EL element is attached to the second surface 110b of the color filter substrate with an electrode 110. If necessary, a cover may be attached to the first surface 110a of the color filter substrate 110 with an electrode.

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 sensor electrodes of the projected capacitive touch panel. On the other hand, when using the color filter substrate 100 with an electrode according to the first embodiment instead of the color filter substrate with an electrode 110 according to the second embodiment, as described above, by combining the electrodes provided on the surface of a cover or the like. A projected capacitive touch panel may be formed, or the electrode 20 may be composed of a sensor portion 21 having a shape corresponding to a display area and three or more (preferably four) wiring portions 22 to form a surface type static touch panel. A capacitive touch panel may be formed.

The sixth embodiment of the present invention is a method for manufacturing the display device according to the fifth embodiment, wherein a step of forming a color filter substrate with electrodes by the method described in the third or fourth embodiment, Attaching a display element selected from the group consisting of a liquid crystal element and an EL element to the second surface side of the color filter substrate with electrodes.

The attachment of the display element to the second surface side of the color filter substrate with electrodes can be performed by any means known in the art including bonding with an adhesive. Also, optional elements such as the first and second polarizing plates, the backlight, and the cover can be manufactured and attached by any means known in the art.

In this embodiment, as described in the third and fourth embodiments, a structure in which a plurality of separable element regions are formed on one transparent substrate 10 may be used. In this case, for example, a plurality of display devices can be manufactured by attaching a plurality of display elements to the above-described structure and then cutting the transparent substrate 10. Alternatively, a display element structure in which a plurality of display elements are formed on one substrate is attached to the above-described structure, and the transparent substrate 10 and the substrate of the display element structure are cut. A 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 of the third and fourth embodiments, before forming the groove on the first surface and attaching the metal into the groove, the color filter 30 (the first color filter substrate with electrodes) A display element may be attached to the second surface side. In this modified example, the touch sensor electrode is formed after combining the display elements, so that the transparent substrate 10 of the color filter substrate and the substrate 210 of the display element are bonded together, and the slimming of the transparent substrate 10 and the substrate 120 is performed. It has the advantage that processing can be carried out. “Slimming” means a step of reducing the film thickness of the substrate. If the touch sensor electrodes are formed before the display elements are combined, the slimming process cannot be applied to both the transparent substrate 10 of the color filter substrate and the substrate 210 of the display element.

[Example]
(Example 1)
The black photosensitive composition was applied to the second surface of the transparent substrate 10 made of aluminosilicate glass having a thickness of 300 μm using a spin coater. The obtained coating film was heated to 100 ° C. for 5 minutes on a hot plate to dry the coating film. Next, irradiation with 100 mJ / cm ² high-pressure mercury lamp light through a photomask having a desired pattern, 30 seconds of shower development using a 0.2% by mass aqueous sodium hydrogen carbonate solution, washing with water, and in a hot air circulation oven And drying at 230 ° C. for 30 minutes to form a black matrix. 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. As a result, a red colored layer, a green colored layer, and a blue colored layer were sequentially formed to obtain a color filter 30 on the second surface.

Next, a groove was formed on the first surface of the transparent substrate 10 by laser processing. The grooves where the extended portions 25a and straight portions 26 of the first electrode 20a and the extended portions 25b of the second electrode 20b are formed later have a width of 5 μm and a depth of 5 μm. The groove where the wiring part 22a of the first electrode 20a and the wiring part 22b of the second electrode 20b are to be formed later had a width of 20 μm and a depth of 5 μm.

Subsequently, using a spin coater, a conductive material mainly composed of silver particles having an average particle diameter of 100 nm is applied, and the conductive material adhering to a portion other than the groove is scraped off with a doctor blade. The inside was filled with a conductive material. Subsequently, the substrate is heated to 120 ° C. for 30 minutes on the hot plate, and from the first electrode 20a (the sensor unit 21a including the extended portion 25a and the linear portion 26 and the wiring portion 22a), and the extended portion 25b and the wiring portion 22b. A second electrode precursor was formed.

Subsequently, a negative resist was applied to the entire first surface using a spin coater. The obtained coating film was heated to 100 ° C. for 5 minutes on a hot plate to dry the coating film. Next, irradiation with 100 mJ / cm ² high pressure mercury lamp light through a photomask having an opening at the position of the straight portion 26 of the first electrode 20a, shower for 30 seconds using a 0.2 mass% sodium bicarbonate aqueous solution The insulating film 23 was formed by performing development, washing with water, and heat drying at 230 ° C. for 30 minutes in a hot air circulating oven. The obtained insulating film 23 was disposed on the straight portion 26 of the first electrode 20a, and had a width of 60 μm, a length of 100 μm, and a film thickness of 2 μm.

Subsequently, a 35 nm thick Mo film, a 200 nm thick Al film, and a 35 nm thick Mo film were formed on the entire first surface by sputtering. Next, a positive resist was applied to the entire first surface using a spin coater. The obtained coating film was heated to 100 ° C. for 5 minutes on a hot plate to dry the coating film. Next, irradiation with high-pressure mercury lamp light of 100 mJ / cm ² through a photomask having a light-shielding part at a position corresponding to a part of the insulating film 23 and the adjacent extension part 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 Mo / Al / Mo laminated film was removed using an etching solution of phosphoric acid / nitric acid / acetic acid / water (5/5/5/1). Subsequently, the resist film is removed using a resist stripping solution that is a 2% aqueous potassium hydroxide solution, and heat drying is performed at 230 ° C. for 30 minutes in a hot air circulating oven to form the connection portion 24 and expand. The sensor part 21b which consists of the part 25b and the connection part 24, and the 2nd electrode 20b which consists of the wiring part 22b were obtained. The obtained connecting portion 24 was connected to the adjacent extended portion 25b 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. Moreover, the obtained connection part 24 obtained the sheet resistance value of 0.2 ohm / square. The color filter substrate 110 with an electrode was obtained by the above method.

(Example 2)
An alignment film was formed on the second surface 110b 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. 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. 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 second polarizing plate 700 and the cover 800 made of aluminosilicate glass were bonded in this order to the first surface 110a of the color filter substrate 110 with electrodes using an adhesive. 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 electrode-attached color filter substrate 110 using an adhesive, and the IPS has the configuration shown in FIG. A display device using a 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 3)
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 one surface of a 300 μm thick aluminosilicate glass substrate.

Separately, a COP film having a thickness of 50 μm was prepared. Embossing was performed on one side of the COP film to form a groove. The formation position of the groove, and the width and depth of the formed groove are the same as in the first embodiment. 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 other surface of the substrate made of aluminosilicate glass 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
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.

(Example 5)
Using the same procedure as in Example 1, a color filter 30 was formed on the second surface of a 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 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 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 is formed. 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.

(Example 6)
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 one surface of a 300 μm thick aluminosilicate glass substrate. 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 substrate made of aluminosilicate glass and the substrate 210 are bonded together using a sealing material so that the alignment films face each other, and a liquid crystal material 230 is formed by injecting a liquid crystal material into the gap between the two substrates to form a substrate made of aluminosilicate glass. The liquid crystal element 200 attached to the was obtained.

Finally, using an adhesive, the other surface of the substrate made of aluminosilicate glass 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 liquid crystal element 200 attached to the filter substrate 110 was obtained.

DESCRIPTION OF SYMBOLS 10 Transparent substrate 20 Electrode 20a 1st electrode 20b 2nd electrode 21 Sensor part 22 (a, b) Wiring part 23 (a, b) Insulating film 24 Connection part 25 (a, b) Expansion part 26

Linear part

100, 110 Electrode With color filter substrate 110a first surface 110b second surface 200

liquid crystal element

210, 220 substrate 230 liquid crystal layer 400 first polarizing plate 500 backlight 700 second polarizing plate 800 cover

Claims

A transparent substrate having a first surface and a second surface opposite to the first surface, and having a patterned groove on the first surface;
A color filter on the second surface;
A color filter substrate with an electrode, wherein the pattern-shaped groove includes one or a plurality of electrodes including a sensor portion and a wiring portion.
2. 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.
2. 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.
2. The electrode according to claim 1, wherein the electrode is formed of a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium. With color filter substrate.
A transparent substrate having a first surface and a second surface opposite to the first surface, and having a patterned groove on the first surface;
A color filter on the second surface;
One or more first electrodes;
One or more insulating films;
One or more second electrodes,
Each of the first electrodes includes a sensor part having a plurality of extension parts and one or a plurality of linear parts, and a wiring part, and two adjacent extension parts are connected by a linear part, the extension part, The straight portion and the wiring portion exist in the groove,
Each of the second electrodes includes a sensor part having a plurality of extension parts and one or a plurality of connection parts, and a wiring part, and two adjacent extension parts are connected by a connection part, and the extension parts and The wiring portion exists in the groove,
Each of the insulating films is formed on a straight portion of the first electrode,
The first electrode and the second electrode intersect at a straight portion of the first electrode and a connection portion of the second electrode,
The electrode-attached color filter substrate, wherein the connection portion of the second electrode is formed across the insulating film.
The color filter substrate with an electrode according to claim 5, wherein the transparent substrate contains at least one material selected from the group consisting of glass and organic resin.
The color filter substrate with electrodes according to claim 5, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates.
6. The electrode according to claim 5, wherein the electrode is made of a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium. With color filter substrate.
Preparing a transparent substrate having a first surface and a second surface opposite to the first surface;
Forming a color filter on the second surface of the transparent substrate;
Forming a patterned groove on the first surface of the transparent substrate;
Depositing a metal material in the groove to form one or more electrodes,
The electrode consists of a sensor part and a wiring part,
The process of forming the pattern-shaped groove includes dicing processing, wheel scribe processing, water jet processing, air blast processing, sand blast processing, laser processing, embossing, etching, imprint lithography, and photolithography using a photosensitive resin. A method for producing a color filter substrate with an electrode, which is carried out using one or more techniques selected from the group consisting of:
The method for producing a color filter substrate with an electrode according to claim 9, wherein the transparent substrate contains at least one material selected from the group consisting of glass and organic resin.
The method for manufacturing a color filter substrate with an electrode according to claim 9, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates.
The electrode according to claim 9, wherein the electrode is formed of a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium. Of manufacturing a color filter substrate with a filter.
10. The method for producing a color filter substrate with electrodes according to claim 9, further comprising a step of cutting the transparent substrate to obtain a plurality of color filter substrates with electrodes.
Preparing a transparent substrate having a first surface and a second surface opposite to the first surface;
Forming a color filter on the second surface of the transparent substrate;
Forming a patterned groove on the first surface of the transparent substrate;
A plurality of first electrodes including a sensor unit having a plurality of extended portions and one or a plurality of straight portions by attaching a metal material in the groove, and a plurality of extended portions and a wiring portion Forming a plurality of second electrode precursors comprising:
Forming an insulating film on the straight portions of the plurality of first electrodes;
A metal material is deposited on the insulating film to form a connecting portion that straddles the insulating film, two adjacent extended portions of the second electrode precursor are connected by the connecting portion, and a plurality of extended portions Obtaining a plurality of second electrodes including a sensor part having one or a plurality of connection parts, and a wiring part,
The process of forming the pattern-shaped groove includes dicing processing, wheel scribe processing, water jet processing, air blast processing, sand blast processing, laser processing, embossing, etching, imprint lithography, and photolithography using a photosensitive resin. A method for producing a color filter substrate with an electrode, which is carried out using one or more techniques selected from the group consisting of:
The method for producing a color filter substrate with an electrode according to claim 14, wherein the transparent substrate contains at least one material selected from the group consisting of glass and organic resin.
The method for manufacturing a color filter substrate with an electrode according to claim 14, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates.
The electrode according to claim 14, wherein the electrode is made of a metal material containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron and indium. Of manufacturing a color filter substrate with a filter.
The method for producing a color filter substrate with an electrode according to claim 14, further comprising a step of cutting the transparent substrate to obtain a plurality of color filter substrates with an electrode.
A display device comprising the color filter substrate with an electrode according to any one of claims 1 to 8, and a display element selected from the group consisting of a liquid crystal element and an EL element.
A step of forming a color filter substrate with an electrode by the method according to any one of claims 9 to 18,
Attaching a display element selected from the group consisting of a liquid crystal element and an EL element to the second surface side of the color filter substrate with an electrode.
The method for manufacturing a display device according to claim 20, further comprising a step of cutting the color filter substrate with electrodes and the laminate of the display elements to obtain a plurality of display devices.
Preparing a transparent substrate having a first surface and a second surface opposite to the first surface;
Forming a color filter on the second surface of the transparent substrate;
Attaching a display element selected from the group consisting of a liquid crystal element and an EL element on the color filter;
Forming a patterned groove on the first surface of the transparent substrate;
Depositing a metal material in the groove to form one or more electrodes;
The electrode consists of a sensor part and a wiring part,
The process of forming the pattern-shaped groove includes dicing processing, wheel scribe processing, water jet processing, air blast processing, sand blast processing, laser processing, embossing, etching, imprint lithography, and photolithography using a photosensitive resin. A method for manufacturing a display device, which is performed using one or more techniques selected from the group consisting of:
Preparing a transparent substrate having a first surface and a second surface opposite to the first surface;
Forming a color filter on the second surface of the transparent substrate;
Attaching a display element selected from the group consisting of a liquid crystal element and an EL element on the color filter;
Forming a patterned groove on the first surface of the transparent substrate;
A plurality of first electrodes including a sensor part having a plurality of extension parts and one or a plurality of straight parts, and a wiring part by depositing a metal material in the groove, and a plurality of extension parts and wiring parts Forming a plurality of second electrode precursors comprising:
Forming an insulating film on the straight portions of the plurality of first electrodes;
A metal material is deposited on the insulating film to form a connecting portion that straddles the insulating film, two adjacent extended portions of the second electrode precursor are connected by the connecting portion, and a plurality of extended portions Obtaining a plurality of second electrodes including a sensor part having one or a plurality of connection parts, and a wiring part,
The process of forming the pattern-shaped groove includes dicing processing, wheel scribe processing, water jet processing, air blast processing, sand blast processing, laser processing, embossing, etching, imprint lithography, and photolithography using a photosensitive resin. A method for manufacturing a display device, which is performed using one or more techniques selected from the group consisting of: