TW201629589A - Electrode-equipped color filter substrate, display device including that substrate and method for manufacturing that substrate - Google Patents

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 same, and method of manufacturing the same

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

In recent years, color liquid crystal display devices have been used in liquid crystal color televisions and notebook personal computers, and have reached a large market. Moreover, in a mobile phone, a portable information terminal, a car navigation system, etc., the touch panel and the liquid crystal display panel are integrally formed, and the touch panel is used as a touch panel type liquid crystal input device. Display is gaining popularity in the market.

The touch panel is classified into various types such as a resistive film method, a capacitive method, an ultrasonic method, and an optical method depending on the difference in structure and detection method. The capacitive touch panel is disposed on a single substrate and has a light-transmitting conductive film (translucent electrode) divided into a plurality of portions. The capacitive touch panel detects a change in the amount of weak current flowing through an electrostatic capacitance formed by a finger or a pen touch, and specifies a specific contact position. The touch panel transmits the contact position as an input signal to the processing device (personal computer), and displays the content of the output signal according to the processing device on the liquid crystal display device. Set. The capacitive touch panel that is not deformed during operation has excellent optical characteristics (high transmittance), high durability, and excellent operating temperature characteristics as compared with a resistive touch panel that is deformed during operation. .

In the past, touch panel type liquid crystal displays are generally manufactured separately by using a touch panel substrate having touch panel electrodes, a color filter substrate having color filters, and then bonding those substrates (for example, refer to the patent). Document 1). However, there are problems in display performance as follows: generation of interference fringes caused by subtle deviations between the strip-shaped touch panel electrodes and the strip-shaped color filters, or touch panel electrodes and color filters The light sheet is formed at a different depth resulting in the generation of parallax when operating from an oblique direction. The purpose of the invention is to reduce the optical adhesion of the touch panel substrate and the color filter substrate, and to suppress the optical characteristics caused by the gaps generated during the adhesion, and to continuously form the touch panel electrode and the color filter. The technique of the front and back of the same glass substrate (for example, refer to Patent Documents 2 and 3).

In the touch panel type liquid crystal display, there is an In-Cell embedded type in which a touch panel function is built in a liquid crystal element (LCD unit) (specifically, a thin film transistor (TFT) substrate) and outside the LCD unit ( For example, between the polarizing plate and the color filter substrate, the On-Cell embedded type with built-in touch panel function. The In-Cell embedded touch panel type liquid crystal display is worried about the reduction of the yield of the LCD unit caused by the touch sensor function being incorporated into the pixels on the TFT substrate, and the touch sensing in the pixel. The deterioration of the display image quality caused by the reduction in the area of the effective display area caused by the electrode for the device. On the other hand, in On-Cell embedded touch In the panel type liquid crystal display, since the electrode pattern for the touch sensor is formed between the polarizing plate and the color filter substrate, the yield of the LCD unit can be maintained. Moreover, since the area of the effective display area in the pixel of the LCD cell (TFT substrate) does not decrease, the display image quality hardly deteriorates.

Leading patent literature Patent literature

Patent Document 1 JP-A-2007-178758

Patent Document 2, JP-A-2008-9750

Patent Document 3, JP-A-2010-72584

In the conventional On-Cell in-cell touch panel type liquid crystal display, the electrode pattern for the touch panel is a sensor portion formed of a transparent conductive oxide (indium-tin oxide (ITO) or the like). It is composed of a wiring portion formed of a low-resistance metal. Therefore, it is necessary to form the sensor portion and the wiring portion by different steps. Therefore, even if the yield of the LCD unit can be maintained, the On-Cell embedded touch panel type liquid crystal display as a whole has an advantage that the yield is easily lowered due to an increase in the number of steps.

The present invention has been developed in order to solve the above problems, and an object thereof is to reduce the manufacturing process by forming the sensor portion and the wiring portion together, and to improve the overall yield of the touch panel type liquid crystal display. Further, an object of the present invention is to suppress the occurrence of parallax when operating from an oblique direction by shortening the distance between the color filter and the electrode for touch sensitive panel.

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

A color filter substrate with an electrode according to a second embodiment of the present invention includes a transparent substrate having a first surface and a second surface opposite to the first surface, and the first surface a groove having a pattern; a color filter on the second surface; one or a plurality of first electrodes; one or a plurality of insulating films; and one or a plurality of second electrodes; each of the first electrodes includes a plurality The expansion portion and the sensor portion of the one or more linear portions and the wiring portion are connected to each other by a linear portion, and the expansion portion, the linear portion, and the wiring portion are present in the groove Each of the second electrodes includes a sensor portion having a plurality of expansion portions and one or a plurality of connection portions, and a wiring portion, and the two adjacent expansion portions are connected by a connection portion, the expansion portion and the wiring portion Each of the insulating films is formed on a straight portion of the first electrode; and the first electrode and the second electrode are intersected at a connecting portion between the linear portion of the first electrode and the second electrode; The connection portion of the second electrode It is formed across the insulating film. Here, the transparent substrate may also include at least one material selected from the group consisting of glass and organic resin. Alternatively, the transparent substrate may have a laminated structure of a plurality of sub-substrates. Further, the electrode may be formed of a metal material containing one or a plurality of elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium.

A method of manufacturing a color filter substrate with an electrode according to a third embodiment of the present invention is a method of manufacturing the color filter substrate with an electrode according to the first embodiment, characterized in that it comprises: a step of forming a transparent substrate on the second surface opposite to the first surface; a step of forming a color filter on the second surface of the transparent substrate; and forming a pattern-shaped groove on the first surface of the transparent substrate a step of attaching a metal material to the groove and forming one or a plurality of electrodes; the electrode is composed of a sensor portion and a wiring portion; the use is processed by cutting, wheel marking, water One or a plurality of techniques of knife processing, air punching, sandblasting, laser processing, embossing, etching, embossing photolithography, and light lithography using a photosensitive resin are used to form the pattern. The step of the groove. Here, the transparent substrate may also include at least one material selected from the group consisting of glass and organic resin. Alternatively, the transparent substrate may have a laminated structure of a plurality of sub-substrates. Further, the electrode may be formed of a metal material containing one or a plurality of elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium. Further, the manufacturing method of the present embodiment may further include the step of cutting the transparent substrate to obtain a plurality of color filter substrates having electrodes.

A method of manufacturing a color filter substrate with an electrode according to a fourth embodiment of the present invention is the method of manufacturing the color filter substrate with an electrode according to the second embodiment, characterized in that it comprises: preparing a first surface And a step of forming a transparent substrate on the second surface opposite to the first surface; forming a color filter on the second surface of the transparent substrate; and forming a pattern-shaped groove on the first surface of the transparent substrate a step of adhering a metal material to the trench to form a plurality of first electrodes and a plurality of second electrode precursors, the first electrode comprising a plurality of expanded portions and one or more straight portions a detector portion and a wiring portion, wherein the second electrode precursor system includes a plurality of expansion portions and wiring portions; a step of forming an insulating film on the linear portions of the plurality of first electrodes; and attaching a metal material to the insulation A connection portion spanning the insulating film is formed on the film, and two adjacent expansion portions of the second electrode precursor are connected by the connection portion, thereby obtaining a feeling including a plurality of expansion portions and one or more connection portions. Detector department, a step of a plurality of second electrodes of the wiring portion; using from a cutting process, a wheel scribing process, a water jet process, an air punching process, a sandblasting process, a laser process, an embossing process, an etching, an embossing light lithography, and The step of forming the pattern-like grooves is carried out by one or a plurality of techniques selected from the group consisting of photolithography of the photosensitive resin. Here, the transparent substrate may also include at least one material selected from the group consisting of glass and organic resin. Alternatively, the transparent substrate may have a laminated structure of a plurality of sub-substrates. Further, the electrode may be formed of a metal material containing one or a plurality of elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium. Further, the manufacturing method of the present embodiment may further include the step of cutting the transparent substrate to obtain a plurality of color filter substrates having electrodes.

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 selected from the group consisting of a liquid crystal element and an EL element. element.

A method of manufacturing a display device according to a sixth embodiment of the present invention is characterized by comprising the steps of forming a color filter substrate with electrodes according to the method of the third embodiment or the fourth embodiment; and the electrode with the electrode The second surface side of the color filter substrate is provided with a step of selecting a display element selected from the group consisting of a liquid crystal element and an EL element. The method of the present embodiment may further include the step of cutting the color filter substrate with the electrode and the layered body of the display element to obtain a plurality of display devices.

According to a modification of the sixth embodiment of the present invention, the manufacture of the display device including the color filter substrate with electrodes according to the first embodiment and the display element selected from the group consisting of the liquid crystal element and the EL element is manufactured. The method includes the steps of: preparing a transparent substrate having a first surface and a second surface opposite to the first surface; and forming a color filter on the second surface of the transparent substrate; a step of mounting a display element selected from the group consisting of a liquid crystal element and an EL element on the color filter; a step of forming a pattern-shaped groove on the first surface of the transparent substrate; and depositing a metal material thereon a step of forming one or a plurality of electrodes in the groove; the electrode is composed of a sensor portion and a wiring portion; the use is from cutting processing, wheel marking processing, water knife processing, air punching processing, sandblasting processing, and lightning Shooting, embossing, etching, embossing, lithography, and photolithography using photosensitive resin The step of forming the pattern-like grooves is carried out by one or a plurality of techniques selected.

According to another modification of the sixth embodiment of the present invention, the display device including the color filter substrate with electrodes of the second embodiment and the display element selected from the group consisting of the liquid crystal element and the EL element is manufactured. a manufacturing method comprising: a step of preparing a transparent substrate having a first surface and a second surface opposite to the first surface; and a step of forming a color filter on the second surface of the transparent substrate; a step of mounting a display element selected from the group consisting of a liquid crystal element and an EL element on the color filter; a step of forming a pattern-shaped groove on the first surface of the transparent substrate; and attaching a metal material to the surface a step of forming a plurality of first electrodes and a plurality of second electrode precursors in the trench, wherein the first electrode includes a sensor portion having a plurality of expanded portions and one or a plurality of straight portions, and a wiring portion. The second electrode precursor system includes a plurality of expansion portions and wiring portions; a step of forming an insulating film on the linear portions of the plurality of first electrodes; and depositing a metal material on the insulating film to form the insulating film Connected And connecting the connecting portion to the two adjacent expansion portions of the second electrode precursor to obtain a plurality of sensor portions including a plurality of expansion portions and one or more connection portions, and a plurality of wiring portions The second electrode step; using from the cutting process, the wheel scribing process, the water jet process, the air punching process, the sandblasting process, the laser process, the embossing process, the etching, the embossing of the light lithography, and the use of a photosensitive resin The step of forming the pattern-like groove by one or a plurality of techniques selected by the group of light lithography.

The color filter substrate with electrodes of the present invention is formed to provide a thinner and lighter weight display device than when the electrodes for touch sensors are formed on another substrate. Moreover, the color filter substrate with an electrode of the present invention can suppress the occurrence of parallax when operating from an oblique direction by shortening the distance between the color filter and the electrode for the touch sensitive panel. Further, in the method of manufacturing a color filter substrate with an electrode according to the present invention, the sensor portion and the wiring portion of the electrode for a touch sensor are simultaneously formed, thereby simplifying the manufacturing method and reducing the manufacturing cost by the simplification. .

10‧‧‧Transparent substrate

20‧‧‧ electrodes

20a‧‧‧1st electrode

20b‧‧‧2nd electrode

21‧‧‧Sensor Department

22(a,b)‧‧‧Wiring Department

23‧‧‧Insulation film

24‧‧‧Connecting Department

25 (a, b) ‧ ‧ expansion department

26‧‧‧ Straight line

100,110‧‧‧Color filter substrate with electrodes

110a‧‧‧1st

110b‧‧‧2nd

200‧‧‧Liquid components

210, 220‧‧‧ substrate

230‧‧‧Liquid layer

400‧‧‧1st polarizer

500‧‧‧ Backlight

700‧‧‧2nd polarizer

800‧‧‧ Cover

Fig. 1 is a schematic top view showing a color filter substrate with electrodes according to a first 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 electrodes according to the first embodiment of the present invention.

Fig. 3 is a schematic top view showing a color filter substrate with electrodes according to a second embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view showing the color filter substrate with electrodes according to the second embodiment of the present invention taken along a cutting line IV-IV.

Fig. 5 is a schematic cross-sectional view showing the color filter substrate with electrodes according to the second embodiment of the present invention along the cutting line V-V.

Figure 6 is a schematic cross-sectional view showing a liquid crystal display device of a fifth embodiment of the present invention.

Figure 7 is a schematic cross-sectional view showing a liquid crystal display device according to a modification of the fifth embodiment of the present invention.

The color filter substrate with an electrode according to the first embodiment of the present invention includes a transparent substrate having a first surface and a second surface opposite to the first surface, and the first surface The pattern-shaped groove; the color filter on the second surface; and one or a plurality of electrodes are formed by the sensor portion and the wiring portion in the pattern-like groove. Fig. 1 and Fig. 2 show examples of the configuration of the color filter substrate with electrodes according to the present embodiment. In the configuration examples of FIGS. 1 and 2, three electrodes 20 are formed on the first surface of the transparent substrate 10, and the color filter 30 is formed on the second surface on the opposite side of the first surface. Each of the electrodes 20 is composed of a sensor portion 21 and a wiring portion 22 for connecting the sensor portion 21 to an external driving circuit.

The transparent substrate 10 of the present embodiment may be colorless or colored. "Transparent" in the present invention means that the transmittance in the visible region as a whole is 80% or more, preferably 95% or more. The substrate generally used in the liquid crystal display device can be used as the transparent substrate 10 of the present invention without particular limitation. Non-limiting examples of the transparent substrate 10 include an inorganic substrate such as glass, and polycarbonate, polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), and cyclic olefin copolymer (COP). Organic resin substrate. In the case where the color filter substrate with an electrode of the present embodiment is used as a constituent element of the touch panel, the touch panel is in a capacitive manner. Since it is not necessary to consider deformation or the like due to application of an external force as in the case of a resistive film type touch panel, the options for the material and thickness of the transparent substrate 10 become wide. It is preferable to form the transparent substrate 10 from glass in consideration of heat resistance in the process. The groove formed on the first surface of the transparent substrate 10 has a comparable The width and depth of the electrode 20 to be described later are formed at the position of the electrode 20.

The transparent substrate 10 of the present embodiment may have a laminated structure of a plurality of sub-substrates. Each of the sub-substrates may be a self-supporting substrate formed using the above materials. For example, when a laminated structure of two sub-substrates is used, a sub-substrate on which the groove and the electrode 1 are formed on the first surface side can be formed of a material suitable for the formation of the groove, and a suitable color filter can be formed thereon. The material of the characteristic is formed as a sub-substrate on the second surface side on which the color filter is provided. In the transparent substrate 10 having a laminated structure of a plurality of sub-substrates, at least one of the sub-substrates is preferably self-standing. Other sub-substrates may also be so-called "layers" that are not self-supporting. In other words, the transparent substrate 10 of the present embodiment may have a laminated structure in which one or a plurality of layers are provided on the self-supporting sub-substrate.

The electrode 20 of the present embodiment includes a metal material containing one or a plurality of elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium. Each of the electrodes 20 of the present invention is composed of a sensor portion 21 and a wiring portion 22. The sensor portion 21 constitutes a part of the sensor of the capacitive touch filter. Since the opaque metal material as described above is used, the sensor portion 21 of the present invention is composed of a thin line defining the outline thereof and a thin line arranged in a lattice shape inside the sensor portion 21, and the sensor portion 21 is given. Visible light transmittance is preferred. The "lattice shape" in the present invention means that one or a plurality of thin lines extending in the first direction and one or a plurality of thin lines extending in the second direction intersecting the first direction are formed. The direction in which the second direction is orthogonal to the first direction is preferable. The thin line constituting the sensor portion 21 may have a thickness of 0.1 to 10 μm, preferably 0.3 to 3 μm. width. By having the width in this range, it is possible to prevent disconnection when a transient voltage such as static electricity is generated, maintenance of invisibility of fine lines, high visible light transmittance of the sensor portion, and reduction in resistance value of thin wires. Here, the ratio of the total area of the thin lines viewed from the vertical direction of the transparent substrate 10 to the area of the sensor portion 21 is set to be in the range of 0.1 to 10%, and the visible light transmittance of the sensor portion 21 is ensured. Preferably. Further, the thin wires constituting the sensor portion 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 conduction failure and prevent the transparent substrate 10 from being cracked. On the other hand, the wiring portion 22 has a function of electrically connecting the sensor portion 21 to an external circuit (not shown). The wiring portion 22 may have the same width and thickness as the thin wires constituting the sensor portion 21. In general use, since the wiring portion exists in a region other than the display region, it may have a width of 5 to 50 μm, preferably 10 to 30 μm, for the purpose of achieving a lower resistance value than the invisibility.

The electrode 20 of the present embodiment can form both the sensor portion 21 and the wiring portion 22 with the same material. Since the transparent conductive oxide such as ITO is not used in the sensor portion, it is possible to suppress an increase in the resistance value of the entire electrode 20 caused by a relatively high resistivity of the transparent conductive oxide. Further, since the interface where the transparent conductive oxide and the low-resistance metal material are not present does not exist, the effect of adverse effects such as electron migration can be eliminated. Further, since the entire electrode 20 can be formed in a single step, 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 also have a plurality of portions that transmit light having different color regions. For example, color filter 30 It may also have a red (R) colored layer, a green (G) colored layer, and a blue (B) colored layer. Each colored layer can be formed, for example, by using an acrylic resin in which pigments of respective colors are dispersed. Each colored layer typically has a film thickness of 0.5 to 3.0 μm. Further, the color filter 30 of the present invention may further have a black array (BM) for shielding light in the visible light region for the purpose of achieving high contrast and preventing color mixture. The black array system can be formed using an acrylic resin that disperses a black pigment. In the case where the acrylic resin is dispersed using a black pigment, the black array typically has a film thickness of 0.5 to 3.0 μm. Alternatively, the black array may be a metal film having a film thickness of 10 to 200 nm. As is known in the art, in the color filter 30, each colored layer is disposed so as to correspond to a pixel (sub-pixel) portion of the combined display element, and the black array is disposed in the gap.

A color filter substrate with an electrode according to a second embodiment of the present invention includes a transparent substrate having a first surface and a second surface opposite to the first surface, and the first surface a patterned groove; a color filter on the second surface; one or a plurality of first electrodes; an insulating film; and one or a plurality of second electrodes; each of the first electrodes includes a plurality of expansion portions and The sensor portion and the wiring portion of one or a plurality of straight portions are connected by a straight portion, and the expanded portion, the straight portion, and the wiring portion are present in the groove, and each of the plurality of The two electrodes include a sensor portion having a plurality of expansion portions and one or a plurality of connection portions, and a wiring portion, and the two adjacent expansion portions are connected by a connection portion, and the expansion portion and the wiring portion are present in the wiring portion. In the groove, the insulating film is formed on a straight portion of the first electrode, and the first electrode and the second electrode are in a straight portion of the first electrode and a second electrode The connection portions of the poles intersect, and the connection portion of the second electrode is formed across the insulating film.

Fig. 3 to Fig. 5 show examples of the configuration of the color filter substrate with electrodes according to the present embodiment. In the configuration example of FIGS. 3 to 5, the first electrode 20a composed of two partial electrodes and the second electrode 20b composed of two partial electrodes are formed on the first surface 110a of the transparent substrate 10. On the second surface 110b opposite to the first surface 110a, a color filter 30 is formed. Each of the partial electrodes of the first electrode 20a is composed of a sensor portion 21a and a wiring portion 22a, and the sensor portion 21a is composed of a linear portion 26 between the three expanded portions 25a and the adjacent expanded portion 25a. Each of the partial electrodes of the second electrode 20b is composed of the sensor portion 21b and the wiring portion 22b, and the sensor portion 21b is formed between the three expanded portions 25b and the adjacent expanded portion 25b and formed on the insulating film 23. The upper connecting portion 24 is formed.

The transparent substrate 10 and the color filter 30 of the present embodiment can be the same as those of 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 portion 21a is composed of the expanded portion 25a and the straight portion 26. All of the first electrode 20a-based sensor portion 21a (that is, the expanded portion 25a and the straight portion 26) and the wiring portion 22a are formed inside the groove formed on the first surface 110a of the transparent substrate 10. Further, the sensor portion 21a and the wiring portion 22a can be formed using the same material as that of the first embodiment.

Each of the expanded portions 25a is preferably composed of a thin line defining the outline thereof and a thin line arranged in a lattice shape inside. As in the first embodiment, the thin wires constituting the expanded portion 25a may have a width of 0.1 to 10 μm, preferably 0.3 to 3 μm, and a thickness of 0.1 to 10 μm, preferably 0.3 to 3 μm. The expanded portion 25a is an electrode (hereinafter referred to as "unit electrode") that determines the minimum unit of the position at which the touch panel can detect. The expanded portion 25a preferably has a quadrangular or hexagonal shape that is uniformly disposed on the entire display region together with the expanded portion 25b of the second electrode. For example, the shape of each side of the square-shaped expanded portion 25a shown in Fig. 3 may be in the range of 1 to 20 mm.

The linear portion 26 is connected to the adjacent expanded portion 25a, and constitutes the sensor portion 21a extending in one direction. Since the straight portion 26 is generally formed in the display region, it is preferable to have invisibility as the thin line constituting the expanded portion 25a. Further, since the region where the straight portion 26 and the connecting portion 24 intersect is a non-sensing region of the sensor, it is preferable to make the straight portion 26 thin as long as the desired conductivity is obtained. The straight portion 26 has a width of 0.1 to 10 μm, preferably 0.3 to 3 μm. Further, the linear portion 26 has a thickness of preferably 0.1 to 10 μm, preferably 0.3 to 3 μm.

The wiring portion 22a has a function of electrically connecting the sensor portion 21a to an external circuit (not shown). The wiring portion 22a may have the same width and thickness as the thin wires constituting the sensor portion 21a. In the general use, since the wiring portion 22a exists in a region other than the display region, it may have a width of 5 to 50 μm, preferably 10 to 30 μm, for the purpose of achieving a lower resistance value than the invisibility.

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

The insulating film 23 is provided on the straight portion of the first electrode 20a in order to prevent the first electrode 20a from coming into electrical contact with the second electrode 20b. Since the insulating film 23 is provided in the display region, it is preferable to transparently light the visible region. Moreover, since the insulating film 23 is required for patterning to be described later, it is preferable to use a photosensitive material. Examples of the photosensitive material which is transparent to light in the visible region include a polymerizable group-containing oligomer, a monomer, and a UV-curable coating composition containing an ultraviolet polymerization initiator and an additive. Alternatively, the photosensitive material may be a positive photosensitive material which is increased in solubility by light irradiation.

The connecting portion 24 is formed of a conductive material and electrically connects the adjacent expanded portions 25b. The conductive material forming the connecting portion 24 is preferably a material which can be removed without affecting the conductive material filled in the groove. One of the connection portions of the connection portion 24 may have a laminated structure of a Mo film having a thickness of 35 nm, an Al film having a thickness of 200 nm, and a Mo film having a thickness of 35 nm. The expansion portion 25b electrically connected by the connecting portion 24 The sensor portion 21b of the second electrode extending in a direction intersecting the sensor portion 21a of the first electrode is formed. 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 21b of the first electrode. The width and film thickness of the connecting portion 24 can be determined in consideration of realization of invisibility, maintenance of desired conductivity, and the like.

According to a third aspect of the present invention, in the method of manufacturing the color filter substrate with an electrode according to the first aspect of the invention, the method of the present invention includes: providing a first surface and a side opposite to the first surface a step of forming a transparent substrate on two sides; a step of forming a color filter on the second surface of the transparent substrate; a step of forming a pattern-shaped groove on the first surface of the transparent substrate; and attaching a metal material to the groove a step of forming one or a plurality of electrodes; the electrode is composed of a sensor portion and a wiring portion, and is used from a dicing process, a wheel scribe process, and a water jet. Processing, air blast processing, sand blast processing, laser processing, emboss processing, etching, imprint lithography, and use of photosensitivity One or a plurality of techniques selected by the group consisting of photolithography of the resin perform the step of forming the groove of the pattern. Further, each step may be carried out in an arbitrary order by forming a groove on the first surface and then attaching the metal material to the groove.

First, the transparent substrate 10 having the first surface and the 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, or a laminated structure in which two different self-supporting sub-substrates are adhered, or one or a plurality of coating films may be applied to the self-supporting sub-substrate. Multi-layer construction.

The formation of the color filter 30 on the second surface of the transparent substrate 10 can be formed according to any method known in the art. For example, in the case where each of the colored layers and the black array of the color filter 30 is formed using the photosensitive coating film composition, coating including the coating composition on the second surface, exposure through the mask, and development can be used. Methods. Additional steps such as post-baking may be implemented as needed.

The formation of the grooves of the first surface of the transparent substrate 10 can be carried out by any chemical means or physical means known in the art. Examples of chemical means that can be used include etching, embossing photolithography, and photolithography using a photosensitive resin. Examples of physical means that can be used include cutting processing, wheel marking processing, water jet processing, air punching processing, laser processing, embossing processing, and the like. The groove is formed at a position corresponding to the electrode 20 at a predetermined depth and width.

Next, the metal material is adhered to the groove formed in the first surface to form one or a plurality of electrodes 20. Each of the electrodes 20 has a sensor portion 21 and a wiring portion 22. The adhesion of the metal material is performed by applying a conductive paste containing a metal material and an organic binder to the first surface, removing the conductive paste adhering to the portion other than the groove, and heat-treating the conductive paste in the groove. This can be implemented. The metal material contained in the conductive paste may also include one or a plurality of elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium. The organic binder may also comprise any material known in the art. The conductive paste may further comprise a carrier, an inorganic binder or the like which is any material known in the art.

The coating of the conductive paste is such that the conductive paste can be applied to the first surface of the transparent substrate 10 and the groove is completely filled with the conductive paste. It can be implemented by any means. Here, a means for applying a conductive paste with a uniform film thickness is preferred. For example, means such as spin coating, roll coating, dip coating, or the like can be used. Then, the removal of the conductive paste adhering to the portion other than the groove can be performed by moving the blade while pressing the first surface of the transparent substrate 10. In order to remove a small amount of the conductive paste remaining in the portion other than the groove on the first surface, a wiping process or the like may be further performed. The heating of the conductive paste in the bath can be carried out at a time and temperature sufficient to remove the organic binder in the conductive paste.

In the method of the present embodiment, the electrodes 20 are formed together in a groove formed in the first surface. In other words, the sensor portion 21 and the wiring portion 22 are formed of the same material and are simultaneously formed. Thereby, the step of forming the electrode 20 is simplified, and the increase in manufacturing cost can be prevented. Further, the patterning of the electrode 20 is not achieved by etching the conductive material uniformly formed on the substrate, but by forming the groove on the first surface of the transparent substrate 10. Therefore, the electrode 20 of high definition (thin line width and narrow interval) can be formed as compared with the case of performing etching of the conductive material. Further, since the formed electrode 20 is formed in the groove of the transparent substrate, deformation or the like of the electrode 20 caused by the current flow can be sufficiently suppressed.

In the present embodiment, a plurality of separable element regions may be formed on one of the transparent substrates 10. The "element area" means a color filter 30 and one or more electrodes 20 which are independent of other areas and are cut, thereby acting as a region of the color filter substrate with electrodes. Further, by cutting a plurality of element regions, a plurality of color filter substrates 100 having electrodes can be formed. A plurality of transparent filter substrates 10 can be used to efficiently form a plurality of color filter substrates 100 with electrodes. The cutting of the element region can also be carried out by any means known in the art using a diamond cutter scribe method, a cutting method, a water jet method, an etching method, a laser method, or the like. Further, the cutting of the element region can be performed at the time of manufacture of the display device as will be described later.

According to a fourth aspect of the present invention, in the method of manufacturing the color filter substrate with an electrode according to the second aspect of the present invention, the method of the present invention includes: providing a first surface and a side opposite to the first surface a step of forming a transparent substrate on two sides; a step of forming a color filter on the second surface of the transparent substrate; a step of forming a pattern-shaped groove on the first surface of the transparent substrate; and attaching the metal material to the groove And forming a plurality of first electrodes and a plurality of second electrode precursors, wherein the first electrode includes a sensor portion having a plurality of expanded portions and one or a plurality of straight portions, and a wiring portion, the second portion The electrode precursor system includes a plurality of expansion portions and wiring portions; a step of forming an insulating film on the linear portions of the plurality of first electrodes; and depositing a metal material on the insulating film to form a structure across the insulating film a connection portion that connects the two adjacent expansion portions of the second electrode precursor to the connection portion, thereby obtaining a plurality of sensor portions including a plurality of expansion portions and one or more connection portions, and a plurality of wiring portions Step of the second electrode; From the group consisting of cutting, wheel marking, waterjet, air punching, sandblasting, laser processing, embossing, etching, embossing, and photolithography using photosensitive resin The step of forming the pattern-like grooves is carried out by one or a plurality of techniques selected.

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 carried out in the same manner as in the third embodiment.

In addition, the step of forming the pattern-shaped groove on the first surface of the transparent substrate can be carried out in the same manner as in the third embodiment except that the groove corresponding to the expanded portion and the wiring portion of the second electrode 20b is provided. More specifically, the groove is formed in a position corresponding to the plurality of expanded portions 25a for the first electrode 20a, the linear portion 26 that connects the adjacent expanded portion 25a, and the wiring portion 22a, and is formed in the second electrode. The position of the expansion portion 25b and the wiring portion 22b for 20b. A part of the groove corresponding to the expanded portion 25b is connected to the wiring portion 22b, but most of the groove corresponding to the expanded portion 25b is formed not to be connected to the other groove.

Next, adhesion to the metal material in the groove is performed in the same manner as in the third embodiment. At this stage, a plurality of first electrodes 20a composed of a plurality of expansion portions 25a, a straight portion 26 connecting the adjacent expansion portions 25a, and the wiring portion 22a are completed. On the other hand, the plurality of second electrodes 20b are not formed with the connection portion 24 that connects the plurality of expansion portions 25b, and are in the form of the second electrode precursor at this stage.

Then, the insulating film 23 is formed on the linear portion 26 of the first electrode 20a. In the insulating film 23, the photosensitive material described in the second embodiment is applied to the entire first surface of the transparent substrate 10, and the light is irradiated so that the photosensitive material remains in the pattern of the predetermined region including the straight portion 26. Then, development is carried out, thereby being formed. For example, in the case of using a UV-curable coating film composition, UV light is irradiated onto a region directly including the straight portion 20. On the other hand, in the case of using a positive photosensitive material, most of the first surface other than the region including the straight portion 20 is irradiated with light of a predetermined wavelength. The development can be carried out using a suitable liquid depending on the photosensitive material used.

Then, the metal material is adhered to the insulating film 23 to form a connecting portion 24 that straddles the insulating film 23, and the adjacent two expanded portions 25b of the second electrode precursor are connected by the connecting portion 24 to obtain the second electrode. 20b. The adhesion of the metal material can be deposited on the entire surface of the transparent substrate 10 (including the upper surface and the side surface of the insulating film 23) by a vapor deposition method, a sputtering method, or the like, followed by sputtering, and removing unnecessary metal materials. With this implementation. Depending on the demand, the metal material may be stacked using a plurality of metal materials to form a metal film having a laminated structure. The patterning can be carried out by any means known in the art, such as photolithography using a positive resist.

In the present embodiment, a plurality of separable element regions may be formed on one of the transparent substrates 10. Moreover, by cutting a plurality of element regions, a plurality of color filter substrates 110 with electrodes can be formed. A plurality of transparent filter substrates 10 can be used to efficiently form a plurality of color filter substrates 11 with electrodes. The cutting of the element region can also be carried out by any means known in the art using a diamond cutter scribing method, a cutting method, a water jet method, an etching method, a laser method, or the like. Further, the cutting of the element region can be performed at the time of manufacture of the display device as will be described later.

According to a fifth embodiment of the present invention, there is provided a display device comprising the color filter with an electrode according to the first or second embodiment and a display element. The display element is selected from the group consisting of a liquid crystal element and an EL element.

First, a display device using the color filter substrate with an electrode of the second embodiment and a liquid crystal element as a display element will be described. Fig. 6 shows an example of the configuration of the display device of the embodiment.

In the example of the sixth embodiment, the second polarizing plate 700 and the lid 800 are laminated on the first surface 110a of the electrode-equipped color filter substrate 110 of the second embodiment, and the liquid crystal element 200 is placed on the second surface 110b side. The first polarizing plate 400 and the backlight 500 are laminated.

The liquid crystal element 200 has a structure in which the liquid crystal layer 230 is disposed between the pair of substrates 210 and 220. The 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 orienting the liquid crystal.

For example, an electrode composed of a plurality of strip-shaped partial electrodes extending in the first direction is provided on the substrate 210, and is provided on the substrate 220 by a second direction crossing the first direction. A plurality of electrodes formed by strip-shaped partial electrodes can form a passive matrix-driven liquid crystal element. The first direction is preferably orthogonal to the second direction.

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

The alignment film is preferably formed on the outermost surface of the substrates 210 and 220 so as to be in contact with the liquid crystal layer 230. The oriented film system can be formed using any material known in the art, such as polyimide or the like. The liquid crystal molecules in the liquid crystal layer 220 can be oriented in a predetermined direction by rubbing the alignment film.

The liquid crystal element 200 may be an element of any type known in the art such as a TN type, an STN type, a VA type, an MVA type, an IPS type, or an OCB type. The liquid crystal material constituting the liquid crystal layer 230 contains any material known in the art in a manner suitable for the element.

In the modification of the embodiment, the substrate 220 in the liquid crystal 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-equipped color filter substrate 110 of the present invention. on. Fig. 7 shows a configuration example of the present modification. In the configuration of Fig. 7, a substrate 210 including a pixel electrode, a liquid crystal layer 230, and an electrode-equipped color filter substrate 110 including an electrode for liquid crystal switching and an alignment film are sequentially laminated. Further, a planarization layer for eliminating irregularities caused by the color filter 30 may be further provided between the color filter 30 and the liquid crystal driving electrode.

Further, in the IPS type element in which the liquid crystal molecules are switched in the plane, the electrode may be provided only on one of the substrate 210 or the substrate 220, and the electrode of the other substrate may be omitted. Further, in the IPS type element, the electrode-equipped color filter substrate 100 of the present invention can be used instead of the other substrate omitting the electrode. For example, in the case where the electrode is provided only on the substrate 210, the configuration of the seventh drawing in which the substrate 220 is omitted may be employed. In this case, it is preferable to arrange the alignment film on the color filter 30 and to bring the alignment film into contact with the liquid crystal layer 230.

The liquid crystal element 200 may further include a flexible printed circuit (FPC) substrate, an anisotropic conductive film (ACF), a TAB module, and a COF mode for connecting electrodes disposed on the substrate 210 and/or 220 to an external driving circuit. Group, COG module, etc.

The first polarizing plate 400 and the second polarizing plate 700 have characteristics of selectively transmitting light polarized in a specific direction. In the case of being 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. Further, 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 can be determined depending on the orientation state of the liquid crystal material to be used and the type of the element. Moreover, the angle is also based on a normal black that causes the display device to operate in a normally white mode in which light of the backlight is transmitted without applying an electric field, or a backlight that does not transmit light in an applied electric field. Mode action. For example, when the display device of the TN mode or the STN mode is operated in the normal 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 generally set to 90°.

The first polarizing plate 400 and the second polarizing plate 700 can be formed of any material known in the art including an iodine compound or a dichroic molecule.

Backlight 500 includes any source of light known in the art. For example, a cold cathode fluorescent lamp (CCFL), a light emitting diode (LED), or the like can be used as the backlight 500. The backlight 500 may be disposed in a display area (positive type) of the display device, or may be disposed on a peripheral portion (side light type or edge light type) of the display device. In the case of the side light type or the edge light type, the light emitted from the backlight 500 can be guided to the entire display area of the display device using a light guide plate, a cymbal sheet or the like. Moreover, the backlight 500 may be a single light source or a plurality of light sources. In the case of using the backlight 500 constructed as described above, it is also possible to independently control the switching of the respective light sources in accordance with the display content.

The purpose of the cover 800 is to protect the layers present beneath it. Further, since the display content of the liquid crystal element 200 can be seen 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 an 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 color filter substrate 110 with electrodes function as sensor electrodes of a projection type 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 110 with an electrode of the second embodiment, the second polarizing plate 700 is provided. Or a combination of electrodes on the surface of either of the covers 800 to obtain a projection type capacitive touch panel. Here, the electrode 20 of the color filter substrate 100 with electrodes is formed by a plurality of partial electrodes extending in one direction, and the electrodes provided on the surface of either of the first polarizing plate 700 or the cover 800 are A plurality of partial electrodes extending in the direction of intersection are formed.

Alternatively, when the color filter substrate 100 with an electrode according to the first embodiment is used instead of the color filter substrate 110 with an electrode of the second embodiment, the sensor portion corresponding to the shape of the display region is used. A surface type capacitive touch panel can also be obtained by constituting the electrode 20 with three or more (four preferred) wiring portions.

On the other hand, in the display device using the electrode-equipped color filter substrate 110 of the second embodiment and the EL element as the display element, the EL element is mounted on the color filter substrate 110 with electrodes. 2 faces 110b. The cover may be attached to the first surface 110a of the color filter substrate 110 with electrodes as needed.

The EL element has a configuration in which an organic activation layer is sandwiched between a pair of substrates. Each of the pair of substrates forms an electrode in a configuration such that a plurality of light-emitting portions that can be independently driven are formed. A plurality of strip electrodes extending in the intersecting direction may be provided in each of the pair of substrates to form a passive matrix driven EL element. Alternatively, a plurality of pixel electrodes connected to the switching element in a one-to-one manner may be provided on one of the substrates, and an integrated common electrode may be provided on the other substrate to form an active matrix-driven EL element. Further, the organic activating layer may include 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. Further, the organic activating layer may be a layer emitting white light, or a layer in which a plurality of regions emitting a plurality of colors (for example, RGB) are arranged in an array.

In this case, the first electrode 20a and the second electrode 20b formed on the color filter substrate 110 with electrodes also function as sensor electrodes of the projection type 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 110 with an electrode of the second embodiment, as described above, The electrode provided on the surface of the cover or the like is combined to form a projection type capacitive touch panel, and the sensor portion 21 corresponding to the shape of the display region and the three or more (four preferred) wiring portions 22 may constitute an electrode. 20, forming a surface type electrostatic capacitance type touch panel.

According to a sixth aspect of the present invention, in a method of manufacturing a display device according to the fifth aspect of the invention, the method of forming the color filter substrate with an electrode according to the method of the third or fourth embodiment And a step of mounting a display element selected from the group consisting of the liquid crystal element and the EL element on the second surface side of the electrode-equipped color filter substrate.

The mounting of the display element on the second surface side of the color filter substrate with electrodes can be carried out by any means known in the art including adhesion by an adhesive or the like. Further, the arbitrarily selected elements such as the first and second polarizing plates, the backlight, and the cover may be manufactured and mounted by any means known in the art.

In the present 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 can be used. In this case, for example, a plurality of display elements are mounted on the above-described structure, and then the transparent substrate 10 is cut, and a plurality of display devices can be manufactured. Alternatively, a display element structure in which a plurality of display elements are formed on one substrate may be mounted on the above-described structure, and the substrate of the transparent substrate 10 and the display element structure may be cut, and a plurality of display devices may be manufactured. The cutting of the substrate of the display element structure can also be performed by the same means as the transparent substrate 10.

As a modification of the embodiment, in the methods of the third and fourth embodiments, the display element may be mounted on the color filter 30 before the groove formation of the first surface and the adhesion of the metal in the groove ( The second surface side of the color filter substrate with electrodes). In this modification, by forming the electrodes for the touch sensor after combining the display elements, the transparent substrate 10 can be implemented in a state in which the transparent substrate 10 of the color filter substrate and the substrate 210 of the display element are adhered. The advantage of slimming processing of the substrate 120. "Thinning processing" means making the film thickness of the substrate Thinning steps. If the electrodes for the touch sensor are formed before the display elements are combined, the thinning process cannot be applied to both the transparent substrate 10 of the color filter substrate and the substrate 210 of the display element.

[Examples] (First embodiment)

The black photosensitive composition was applied by spin coating on the second surface of the transparent substrate 10 made of alumina glass having a thickness of 300 μm. The obtained coating film was heated to 100 ° C on a hot plate for 5 minutes to dry the coating film. Next, irradiation with a high-pressure mercury lamp of 100 mJ/cm ² through a mask having a desired pattern, spray development with a 0.2% by mass aqueous solution of sodium hydrogencarbonate in 30 seconds, water washing, and in a hot air circulating oven were carried out. It was dried by heating at 230 ° C for 30 minutes to form a black array. Next, in addition to using a red photosensitive composition, a green photosensitive composition, and a blue photosensitive composition instead of the black photosensitive composition, and using a photomask corresponding to each color, red coloring is sequentially formed according to the same procedure. The color filter 30 on the second surface is obtained by the layer, the edge coloring layer, and the blue coloring layer.

Next, the groove is formed on the first surface of the transparent substrate 10 by laser processing. Then, the groove forming the position of the expanded portion 25a and the straight portion 26 of the first electrode 20a and the expanded portion 25b of the second electrode 20b has a width of 5 μm and a depth of 5 μm. Then, the groove at the position where the wiring portion 22a of the first electrode 20a and the wiring portion 22b of the second electrode 20b are formed has a width of 20 μm and a depth of 5 μm.

Next, using a spin coating, a conductive material containing silver particles having an average particle diameter of 100 nm as a main component is applied, and then scraped off with a doctor blade The conductive material is placed on a portion other than the groove, whereby the conductive material is filled in the groove. Then, it is heated to 120 ° C in a hot plate for 30 minutes to form the first electrode 20a (the sensor portion 21a and the wiring portion 22a composed of the expanded portion 25a and the linear portion 26), the expanded portion 25b, and the wiring portion. The second electrode precursor composed of 22b.

Next, a negative resist was applied to the entire surface of the first surface by spin coating. The obtained coating film was heated to 100 ° C on a hot plate for 5 minutes to dry the coating film. Next, irradiation with a high-pressure mercury lamp of 100 mJ/cm ² through a mask having an opening at the position of the straight portion 26 of the first electrode 20a, and 30 minutes of shower development using a 0.2% by mass aqueous solution of sodium hydrogencarbonate were carried out. It was washed with water and dried by heating at 230 ° C for 30 minutes in a hot air circulation type oven to form an insulating film 23. The obtained insulating film 23 is disposed on the linear portion 26 of the first electrode 20a, and has a width of 60 μm, a length of 100 μm, and a film thickness of 2 μm.

Next, a Mo film having a thickness of 35 nm, an Al film having a thickness of 200 nm, and a Mo film having a thickness of 35 nm were formed on the entire surface of the first surface by a sputtering method. Then, a positive resist was applied to the entire surface of the first surface by spin coating. The obtained coating film was heated to 100 ° C on a hot plate for 5 minutes to dry the coating film. Then, irradiation with a high-pressure mercury lamp of 100 mJ/cm ² through a mask having a light-shielding portion at a position corresponding to one portion of the insulating film 23 and the adjacent expanded portion 25b was performed, and 2.3% by mass of tetramethylammonium hydroxide was used ( The TMAH aqueous solution was spray-developed and washed with water for 60 seconds to form a resist film composed of a plurality of portions disposed at positions corresponding to one portion of the insulating film 23 and the adjacent expanded portion 25b. Next, the exposed Mo/Al/Mo buildup film was removed using an etching solution of phosphoric acid/nitric acid/acetic acid/water (5/5/5/1). Next, the removal of the resist film using the resist stripping solution of the 2% potassium hydroxide aqueous solution and the heating and drying at 230 ° C for 30 minutes in a hot air circulating oven were carried out to form the joint portion 24, thereby obtaining The sensor portion 21b composed of the expanded portion 25b and the connecting portion 24 and the second electrode 20b composed of the wiring portion 22b. The obtained connecting portion 24 is connected to the extending portion 25b adjacent to the insulating film 23, and has a width of 5 μm, a length of 150 μm, and a film thickness of 270 nm on the insulating film 23. Further, the obtained connecting portion 24 obtained a sheet resistance value of 0.2 Ω/square. According to the above method, the color filter substrate 110 with electrodes is obtained.

(Second embodiment)

In the second surface 110b of the electrode-equipped color filter substrate 110 obtained in the first embodiment, an alignment film is formed by a printing method. On the other hand, a substrate 210 having a switching circuit including a TFT and an electrode for driving a liquid crystal is prepared. An alignment film is formed on the surface on the electrode side of the substrate 210 by a printing method. Next, the alignment film of the two substrates is subjected to a rubbing treatment. Further, the color filter substrate 110 with the electrode and the substrate 210 are adhered to face each other with a sealing material, and the liquid crystal material is injected into the gap between the two substrates to form a liquid crystal layer 230, which is mounted on the electrode. The liquid crystal element 200 of the color filter substrate 110.

Then, the liquid crystal driving electrode of the substrate 210 is connected to the external circuit for driving the liquid crystal, and the first electrode 20a and the second electrode 20b of the color filter substrate 110 with the electrode are used for driving the touch sensor. Connection of external circuits.

Further, on the first surface 110a of the color filter substrate 110 with electrodes, the second polarizing plate 700 and the lid made of aluminum-iridium glass are attached in this order using an adhesive. Then, on the surface of the liquid crystal element 200 opposite to the color filter substrate 110 with electrodes, the first polarizing plate 400 and the backlight 500 are adhered in this order using an adhesive, and the result is shown in FIG. A display device using an IPS liquid crystal element. The resulting display device contains no defective portions and provides normal display and touch position detection functions.

(Third embodiment)

Using the same procedure as in the first embodiment, a color filter 30 composed of a black array and an RGB colored layer was formed on one surface of a 300 μm-thick aluminum-iridium glass substrate.

Further, a COP film having a thickness of 50 μm was prepared. One side of the COP film is embossed to form a groove. The position at which the groove is formed and the width and depth of the groove formed are the same as in the first embodiment. Then, the first electrode 20a and the second electrode 20b are formed by the same steps as in the first embodiment.

Finally, the other side of the aluminum-bismuth glass substrate was adhered to the other surface of the COP film by using an adhesive to obtain an electrode-equipped color filter including the transparent substrate 10 having a laminated structure of aluminum-bismuth glass/COP. Sheet substrate 110.

(Fourth embodiment)

A display device including an IPS liquid crystal element was formed in accordance with the same procedure as in the second embodiment except that the color filter substrate 110 with electrodes obtained in the third embodiment was used. The resulting display device contains no defective portions and provides normal display and touch position detection functions.

(Fifth Embodiment)

The color filter 30 was formed on the second surface of the transparent substrate 10 made of aluminum-iridium glass having a thickness of 300 μm by the same procedure as in the first embodiment. Next, an alignment film is formed on the color filter 30 of the second surface by a printing method.

Next, a substrate 210 having a switching circuit including a TFT and an electrode for driving a liquid crystal is prepared. An alignment film is formed on the surface on the electrode side of the substrate 210 by a printing method. Next, the alignment film of the two substrates is subjected to a rubbing treatment. Further, the transparent substrate 10 and the substrate 210 are adhered to face each other with a sealing material, and the liquid crystal material is injected into the gap between the two substrates to form a liquid crystal layer 230, thereby being mounted on the color filter substrate 110 with electrodes. The liquid crystal element 200.

Next, on the first surface of the transparent substrate 10, the first electrode 20a and the second electrode 20b are formed in the same manner as in the first embodiment, and the color filter substrate 110 with electrodes to which the liquid crystal element 200 is mounted is obtained. .

Further, in the same manner as in the second embodiment, the liquid crystal driving electrodes of the substrate 210 are connected to the liquid crystal driving external circuit, and the first electrode 20a and the second electrode 20b of the electrode-equipped color filter substrate 110 are used. The IPS liquid crystal element is obtained by attaching the external circuit for driving the touch sensor, the first polarizing plate 400 by the adhesive, the second polarizing plate 700, the backlight 500, and the cover 800 made of aluminum bismuth glass. Display device. The resulting display device contains no defective portions and provides normal display and touch position detection functions.

(Sixth embodiment)

Using the same procedure as in the first embodiment, a color filter 30 composed of a black array and an RGB colored layer was formed on one surface of a 300 μm-thick aluminum-iridium glass substrate. Next, an alignment film is formed on the color filter 30 by a printing method.

Next, a substrate 210 having a switching circuit including a TFT and an electrode for driving a liquid crystal is prepared. An alignment film is formed on the surface on the electrode side of the substrate 210 by a printing method. Next, the alignment film of the two substrates is subjected to a rubbing treatment. Further, a substrate made of an aluminum-bismuth glass and a substrate 210 are adhered to each other with a sealing material, and a liquid crystal material is injected into a gap between the two substrates to form a liquid crystal layer 230, thereby obtaining a liquid crystal element mounted on a substrate made of an aluminum-bismuth glass. 200.

Further, a COP film having a thickness of 50 μm was prepared. One side of the COP film is embossed to form a groove. The position at which the groove is formed and the width and depth of the groove formed are the same as in the first embodiment. Then, the first electrode 20a and the second electrode 20b are formed by the same steps as in the first embodiment.

Finally, the other side of the aluminum-bismuth glass substrate was adhered to the other surface of the COP film by using an adhesive to obtain an electrode with a transparent substrate 10 having a laminated structure of aluminum-bismuth glass/COP. The liquid crystal element 200 of the color filter substrate 110.

Further, in the same manner as in the second embodiment, the liquid crystal driving electrodes of the substrate 210 are connected to the liquid crystal driving external circuit, and the first electrode 20a and the second electrode 20b of the electrode-equipped color filter substrate 110 are used. The connection to the external circuit for driving the touch sensor, the first polarizing plate 400 by the adhesive, the second polarizing plate 700, and the backlight A paste of 500 and a lid made of aluminum-iridium glass was attached to each other to obtain a display device including an IPS liquid crystal element. The resulting display device contains no defective portions and provides normal display and touch position detection functions.

Claims (23)

A color filter substrate with an electrode, comprising: a transparent substrate having a first surface and a second surface opposite to the first surface; and having a pattern-like groove on the first surface; The color filter on the second surface; and one or a plurality of electrodes are formed by the sensor portion and the wiring portion in the pattern-like groove. The color filter substrate with an electrode according to claim 1, wherein the transparent substrate comprises at least one material selected from the group consisting of glass and an organic resin. A color filter substrate with an electrode according to claim 1, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates. The color filter substrate with an 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. . A color filter substrate with an electrode, comprising: a transparent substrate having a first surface and a second surface opposite to the first surface; and having a pattern-like groove on the first surface; a color filter on the second surface; one or a plurality of first electrodes; one or a plurality of insulating films; and one or a plurality of second electrodes; each of the first electrodes includes a plurality of expansion portions and one or a sensor portion of the plurality of straight portions and a line portion, wherein the two adjacent expansion portions are connected by a straight portion, and the expansion portion, the straight portion, and the wiring portion are present in the groove; Each of the second electrodes includes a sensor portion having a plurality of expansion portions and one or a plurality of connection portions, and a wiring portion, and the two adjacent expansion portions are connected by a connection portion, and the expansion portion and the wiring portion are connected The insulating film is formed on the linear portion of the first electrode; the first electrode and the second electrode are intersected by the connecting portion of the linear portion of the first electrode and the second electrode; 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 comprises at least one material selected from the group consisting of glass and organic resin. A color filter substrate with an electrode according to claim 5, wherein the transparent substrate has a laminated structure of a plurality of sub-substrates. The color filter substrate with an electrode according to claim 5, 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. . A method of manufacturing a color filter substrate with an electrode, comprising: preparing a transparent substrate having a first surface and a second surface opposite to the first surface; and forming a color filter a step of forming a second surface of the transparent substrate; a step of forming a pattern-shaped groove on the first surface of the transparent substrate; a step of attaching a metal material to the groove and forming one or a plurality of electrodes; the electrode is composed of a sensor portion and a wiring portion; and is used for cutting processing, wheel marking processing, water jet processing, and air blasting Step of forming the pattern-like groove by one or a plurality of techniques of processing, sandblasting, laser processing, embossing, etching, embossing photolithography, and group selection using photolithography of a photosensitive resin . A method of producing a color filter substrate with an electrode according to claim 9, wherein the transparent substrate comprises at least one material selected from the group consisting of glass and an organic resin. A method of 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. A method of producing a color filter substrate with an electrode according to claim 9, wherein the electrode is made of a metal containing one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium. The material is formed. The method for manufacturing a color filter substrate with electrodes according to claim 9, further comprising the step of cutting the transparent substrate to obtain a plurality of color filter substrates with electrodes. A method of manufacturing a color filter substrate with an electrode, comprising: preparing a transparent substrate having a first surface and a second surface opposite to the first surface; a step of forming a color filter on the second surface of the transparent substrate; a step of forming a pattern-shaped groove on the first surface of the transparent substrate; and adhering the metal material to the groove to form a plurality of first a step of an electrode and a plurality of second electrode precursors, wherein the first electrode includes a sensor portion having a plurality of expanded portions and one or a plurality of straight portions, and a wiring portion, wherein the second electrode precursor system includes a plurality of expansions And a wiring portion; a step of forming an insulating film on the linear portion of the plurality of first electrodes; and attaching a metal material to the insulating film to form a connection portion spanning the insulating film, and connecting the portion Connecting two adjacent expansion portions of the second electrode precursor to obtain a sensor portion including a plurality of expansion portions and one or a plurality of connection portions, and a plurality of second electrodes of the wiring portion; Group selection consisting of cutting, wheel marking, waterjet, air punching, sandblasting, laser processing, embossing, etching, embossing, and photolithography using photosensitive resin One or A plurality of techniques implement the steps of forming the pattern-like grooves. A method of producing a color filter substrate with an electrode according to claim 14, wherein the transparent substrate comprises at least one material selected from the group consisting of glass and an organic resin. A method of 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. A method of manufacturing a color filter substrate having an electrode according to claim 14, wherein the electrode is composed of one or more elements selected from the group consisting of gold, silver, copper, aluminum, iron, and indium. Formed from a metal material. The method for manufacturing a color filter substrate with electrodes according to claim 14, further comprising the step of cutting the transparent substrate to obtain a plurality of color filter substrates with electrodes. 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 method of manufacturing a display device, comprising: forming a color filter substrate with an electrode according to the method of any one of claims 9 to 18; and the color filter with the electrode A step of mounting a display element selected from the group consisting of a liquid crystal element and an EL element is mounted on the second surface side of the substrate. The method of manufacturing the display device of claim 20, further comprising the step of cutting the color filter substrate with the electrode and the layered body of the display element to obtain a plurality of display devices. A method of manufacturing a display device, comprising: preparing a transparent substrate having a first surface and a second surface opposite to the first surface; a step of forming a color filter on the second surface of the transparent substrate; a step of mounting a display element selected from the group consisting of the liquid crystal element and the EL element on the color filter; and forming a pattern-like groove a step of forming a first surface of the transparent substrate; and a step of depositing a metal material in the groove to form one or a plurality of electrodes; the electrode is composed of a sensor portion and a wiring portion; , wheel marking processing, water jet processing, air punching processing, sandblasting processing, laser processing, embossing processing, etching, embossing light lithography, and the use of photosensitive resin light lithography to form a group or A plurality of techniques implement the steps of forming the pattern-like grooves. A method of manufacturing a display device, comprising: preparing a transparent substrate having a first surface and a second surface opposite to the first surface; and forming a color filter on the second surface of the transparent substrate a step of mounting a display element selected from the group consisting of a liquid crystal element and an EL element on the color filter; and forming a pattern-shaped groove on the first surface of the transparent substrate; a step of adhering a metal material to the trench to form a plurality of first electrodes and a plurality of second electrode precursors, the first electrode including a sensor portion having a plurality of expanded portions and one or a plurality of straight portions And the wiring portion, the second electrode precursor system includes a plurality of expansion portions and wiring portions; a step of forming an insulating film on the linear portions of the plurality of first electrodes; and depositing a metal material on the insulating film Forming a connection portion spanning the insulating film, and connecting the two adjacent expansion portions of the second electrode precursor by the connection portion, thereby obtaining a sensor portion including a plurality of expansion portions and one or more connection portions And the steps of the plurality of second electrodes of the wiring portion; the use of the cutting process, the wheel scribing process, the water jet process, the air punching process, the sandblasting process, the laser process, the embossing process, the etching, the embossing of the light lithography And the step of forming the groove of the pattern is performed by one or a plurality of techniques selected from the group consisting of photolithography of the photosensitive resin.