JP2017126003A - Decorative member, display device, and method for manufacturing organic electroluminescence display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide, as a main purpose, a decorative member that can suppress the generation of peeling of and cracks in a decorative part when being bent and provide a desired light-shielding property to the decorative part.SOLUTION: The present invention is a decorative member comprising a transparent base material having flexibility and a decorative part arranged on the transparent base material. The decorative part is a cured product in which a black pigment is contained in a resin binder containing a photosensitive resin; the pigment concentration of the black pigment relative to the total amount of a solid content of the decorative part is in a range of 45 mass% to 80 mass%; the total light transmittance of the decorative part is 0.02% or less.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a decorative member having a transparent base material having flexibility and a decorative portion arranged on the transparent base material, a display device using the decorative member, and a method for manufacturing an organic electroluminescence display device.

  In recent years, with the development of display devices, demand for flat panel display devices such as liquid crystal display devices and organic electroluminescence display devices has increased. Recently, in addition to televisions and personal computers, multifunctional terminals such as smartphones and tablet terminals are widely used, and the market for flat panel display devices is increasing. In such a situation, research on each member constituting the flat panel display device has been actively conducted.

  The member constituting the flat panel display device can be obtained, for example, by laminating a predetermined functional layer on a glass substrate. When such a member is used, a rigid flat panel display device is obtained. If the flat panel display device is rigid, for example, it becomes difficult to bend, and there is a problem that its use is limited. Therefore, for example, a flexible display device using a member in which a predetermined functional layer is laminated on a flexible transparent substrate has been proposed.

  Since the flexible display device can be freely deformed, for example, a rollable mobile display device can be realized, and there is an advantage that a display device more suitable for mobile can be obtained. Moreover, a flexible display apparatus can be manufactured by a continuous process using a long film, for example, and also has the advantage that it is excellent in productivity.

By the way, the present display apparatus may arrange a decoration member in front of the display panel. Such a decorative member is often used in, for example, a mobile phone having a touch panel function such as a smartphone.
For example, Patent Document 1 discloses a decorative member in which a decorative portion 2 ′ is arranged on a base material 3 ′ as shown in FIG.

Japanese Patent No. 5392641

  As the use of flexible display devices expands, the flexibility required for flexible display devices has increased. For this reason, the front plate protection substrate disposed on the surface of such a flexible display device is also required to have high flexibility so as to follow the flexible display device.

  By the way, a decoration part can be arrange | positioned in order to improve the external appearance of a display apparatus in a front plate protection base material. Specifically, the decoration unit is a member for hiding the non-display area in the display device from the viewing side of the display device, and can mainly hide wiring, control circuits, and the like arranged in the non-display area. Therefore, the decorating unit is required to have a light shielding property such that the wiring, the control circuit, and the like are not visually recognized from the viewing side of the display device.

  The present invention has been made in view of the above circumstances, and can suppress the occurrence of peeling and cracking of the decorative part when bent, and can impart a desired light shielding property to the decorative part. The main purpose is to provide a decorative member.

  The inventors of the present invention can suppress the occurrence of peeling and cracking of the decorative portion when the decorative member is bent, and can provide a desired light-shielding property to the decorative portion. Research was conducted on components. As a result, in order to suppress the occurrence of peeling and cracking of the decorative portion when the decorative member is bent (hereinafter, it may be considered to have bending resistance), the decorative portion is made thin. I found out that there was a need to try.

However, when thinning a decoration part while having bending resistance, the subject that it was difficult to make light-shielding property and bending resistance in a decoration part compatible was discovered.
Specifically, the decorating part in the decorating member usually contains a color pigment showing a predetermined color tone. Therefore, in order to give a desired light-shielding property to the decorative portion, it is necessary to set the content of the color pigment in the decorative portion to a predetermined amount. Here, conventionally, since the content (concentration) of the color pigment in the decoration portion is not so high, the content of the main component (resin binder) for dispersing the color pigment is high, resulting in the thickness of the decoration portion. Was getting thicker.
On the other hand, if only the concentration of the color pigment in the decorating part is increased in order to give a desired light shielding property to the decorating part and reduce the thickness, the content of the resin binder in the decorating part decreases. For example, the present inventors have found a problem that peeling or cracking is likely to occur when the decorative portion is bent, that is, bending resistance is deteriorated.

  The inventors of the present invention have conducted extensive research to solve the above problems, and as a result, the decorative portion has been made thin enough to suppress the occurrence of peeling and cracking when the decorative member is bent. The present invention has been completed by finding the content (pigment concentration) of the color pigment in the decorative part that can achieve the desired light-shielding property and can be imparted to the decorative part.

  That is, this invention is a decorating member which has the transparent base material which has flexibility, and the decorating part arrange | positioned on the said transparent base material, Comprising: The said decorating part is a resin binder containing photosensitive resin. It is a cured product containing a black pigment therein, and the pigment concentration of the black pigment with respect to the total solid content of the decoration part is in the range of 45% by mass to 80% by mass, and the total light transmission of the decoration part A decorative member characterized in that the rate is 0.02% or less is provided.

  ADVANTAGE OF THE INVENTION According to this invention, when the pigment density | concentration of the black pigment contained in a decoration part exists in a predetermined range, it can be set as the decoration part which has desired light-shielding property, and uses a decoration member for a display apparatus. When this occurs, the wiring and the like can be hidden by the decorative portion, and an excellent appearance can be obtained. Moreover, when the decorating member is bent, the decorating part can be prevented from peeling off or cracking.

  In the present invention, the decorative portion has a thickness in the range of 1.0 μm to 3.0 μm, and after the bending durability test with a bending radius of 3 mm is performed 100,000 times or more, the decorative portion is cracked or peeled off. It is preferable that there is no.

  Moreover, this invention is a decorating member which has a transparent base material which has flexibility, and the decorating part arrange | positioned on the said transparent base material, Comprising: The said decorating part is 1.0 micrometer-3 in thickness. Provided is a decorative member having a total light transmittance of 0.02% or less within a range of 0.0 μm.

  According to this invention, when the thickness of a decoration part exists in a predetermined range, when a decoration member is bent, generation | occurrence | production of peeling and a crack of a decoration part can be suppressed. Moreover, when a decoration part has a predetermined optical density, it can be set as the decoration part which has desired light-shielding property, and when a decoration member is used for a display apparatus, wiring etc. are concealed by a decoration part. , Excellent appearance can be obtained.

  In the present invention, it is preferable that the decorative part is not cracked or peeled off after performing a bending durability test with a bending radius of 3 mm 100,000 times or more.

  In the present invention, a black matrix having a plurality of openings is provided in a display area that is on the same plane as the decorative portion and defined by the decorative portion, and the black matrix is the decorative portion. Are preferably made of the same material. A decoration part and a black matrix can be formed simultaneously.

  In this invention, it is preferable to have a colored part in the said opening part. Since the decorating member and the color filter of the present invention can be integrated, the thickness of the display device can be reduced as compared with the case where the decorating member and the color filter are provided separately.

  In the present invention, it is preferable to have a sensor electrode capable of detecting the position of the touch panel on the black matrix. Since the decorating member and the sensor electrode of the present invention can be integrated, the thickness of the display device can be reduced as compared with the case where the decorating member and the sensor electrode base material are provided separately.

  In this invention, it is preferable to have a circularly-polarizing plate in the display area demarcated by the said decoration part. Since the decorative member of the present invention has a circularly polarizing plate, a high-performance display device can be obtained.

  In the present invention, it is preferable to have a black matrix having a plurality of openings on the circularly polarizing plate, and a sensor electrode capable of detecting the position of the touch panel on the black matrix.

  Furthermore, this invention provides the display apparatus characterized by having the above-mentioned decorating member and a display panel.

  ADVANTAGE OF THE INVENTION According to this invention, when a display apparatus is bent, peeling of a decoration part and generation | occurrence | production of a crack can be suppressed. Moreover, when a decoration part has predetermined | prescribed light-shielding property, wiring etc. can be hidden by a decoration part and the outstanding external appearance can be obtained.

Furthermore, the present invention provides a decorating member preparation step of preparing a decorating member that is stuck on a first glass substrate and has a decorating portion formed on the first transparent substrate, and the above decorating A sensor electrode base material laminating step of laminating a sensor electrode base material having a sensor electrode capable of detecting the position of the touch panel on the member, and an organic electroluminescence base material stuck on the second glass base material The organic electroluminescence substrate preparation step, the sensor electrode substrate laminated on the decoration member, and the bonding step of bonding the organic electroluminescence substrate, the decoration member A method for producing an organic electroluminescence display device is provided, which is the above-described decorative member.
Hereinafter, organic electroluminescence may be abbreviated as organic EL.

  According to this invention, the bonding which bonds the decorating member and sensor electrode base material which were stuck on the 1st glass base material, and the organic EL base material which was stuck on the 2nd glass base material. By having a process, shrinkage of each substrate due to heat or the like can be suppressed, and highly accurate alignment can be performed. Moreover, it is necessary to provide a support base material etc. in a sensor electrode base material by having the sensor electrode base material lamination process which laminates | stacks a sensor electrode base material as it is on the decorating member affixed on the 1st glass base material Therefore, the thickness of the organic EL display device can be reduced and high flexibility can be realized.

  INDUSTRIAL APPLICATION When this invention bends, it can suppress the generation | occurrence | production of peeling and a crack of a decoration part, and can be set as the decoration member which can provide desired light-shielding property to a decoration part. There is an effect.

It is the schematic plan view and schematic sectional drawing which show an example of the decorating member of this invention. It is a schematic sectional drawing which shows the other example of the decorating member of this invention. It is a schematic sectional drawing which shows the other example of the decorating member of this invention. It is a schematic sectional drawing which shows the other example of the decorating member of this invention. It is a schematic sectional drawing which shows the other example of the decorating member of this invention. It is a schematic process drawing which shows an example of the manufacturing method of the decorating member of this invention. It is a schematic process drawing which shows the other example of the manufacturing method of the decorating member of this invention. It is a schematic sectional drawing which shows the other example of the decorating member of this invention. It is a schematic sectional drawing which shows the other example of the decorating member of this invention. It is a schematic sectional drawing which shows the other example of the decorating member of this invention. It is a schematic sectional drawing which shows the other example of the decorating member of this invention. It is a schematic plan view which shows an example of the display apparatus of this invention. It is a schematic process drawing which shows an example of the manufacturing method of the organic electroluminescence display of this invention. It is a schematic sectional drawing which shows an example of the conventional decorating member.

  Hereinafter, the decorative member, the touch panel integrated decorative member, and the display device of the present invention will be described.

A. Decoration member The decoration member of this invention is a decoration member which has a transparent base material which has flexibility, and the decorating part arrange | positioned on the said transparent base material, Comprising: The said decorating part is photosensitive. It is a cured product in which a black pigment is contained in a resin binder containing a resin, and the pigment concentration of the black pigment with respect to the total solid content of the decorative portion is in the range of 45% by mass to 80% by mass, and the decorative The total light transmittance of the part is 0.02% or less.

  Moreover, the decorating member of this invention is a decorating member which has the transparent base material which has flexibility, and the decorating part arrange | positioned on the said transparent base material, Comprising: The said decorating part is 1 in thickness. It is a member characterized by having a total light transmittance of 0.02% or less within a range of 0.0 μm to 3.0 μm.

  The decorative member of the present invention will be described with reference to the drawings. Fig.1 (a) is a schematic plan view which shows an example of the decorating member of this invention, FIG.1 (b) is a BB sectional drawing of Fig.1 (a). As shown in FIGS. 1 (a) and 1 (b), the decorative member 1 of the present invention has a transparent base material 3 and a decorative part 2 arranged on the transparent base material 3. The display area D is defined by the decoration unit 2.

According to the present invention, when the pigment concentration of the black pigment contained in the decorative portion is within a predetermined range, it is possible to achieve both light shielding properties and bending resistance in the decorative portion. Therefore, when the decorative member of the present invention is used in a display device, wiring and control circuits can be hidden by the decorative portion, an excellent appearance can be obtained, and, for example, the decorative portion is bent. The occurrence of peeling and cracking at the time can be suppressed.
The reason is considered as follows.
First, the inventors of the present invention have found that it is necessary to reduce the thickness of the decorative portion of the decorative member in order to provide bending resistance when the decorative member is bent. Specifically, it has been found that when the decorative member is bent by thinning the decorative portion, the decorative portion follows the transparent substrate in the decorative member.
However, when thinning a decoration part, the subject that it was difficult to provide desired light-shielding property to a decoration part was discovered. That is, conventionally, the content (concentration) of the black pigment in the decorative portion is not so high. Therefore, when the concentration of the black pigment is greatly increased in order to improve the light shielding property, it is necessary to increase the content of the main component (resin binder) for dispersing the black pigment. There is a problem that the thickness is increased. On the other hand, when only the density | concentration of a black pigment is raised, there exists a subject that content of the resin binder in a decoration part will reduce and a bending resistance will fall.
On the other hand, in the present invention, while maintaining the desired light-shielding properties, newly discovered a pigment concentration range of the black pigment capable of thinning the decorative portion to the extent that excellent bending resistance can be exhibited, The present invention has been completed. That is, in the present invention, when the pigment concentration of the black pigment is within a predetermined range, it is possible to conceal the wiring, the control circuit, and the like by the decorative portion, and an excellent appearance can be obtained, and the decorative member When this is bent, it is possible to suppress the peeling and cracking of the decorative portion from the transparent base material.

  Moreover, according to this invention, when the decorating part is in the predetermined range, when the decorating member is bent, the decorating part is prevented from peeling or cracking from the transparent substrate. be able to. Moreover, when a decoration part has a predetermined optical density, it can be set as the decoration part which has desired light-shielding property, and when a decoration member is used for a display apparatus, wiring etc. are concealed by a decoration part. , Excellent appearance can be obtained.

  Hereinafter, the decoration part and transparent base material which comprise the decorating member of this invention are demonstrated.

1. Decoration part The decoration part in this invention is a member arrange | positioned on a transparent base material.
In the decorating part of the present invention, the pigment concentration of the black pigment with respect to the total solid content of the decorating part is in the range of 45% by mass to 80% by mass, and the total light transmittance of the decorating part is 0.02% or less. (First mode). Moreover, the decoration part in this invention has thickness in the range of 1.0 micrometer-3.0 micrometers, and total light transmittance is 0.02% or less (2nd aspect), It is characterized by the above-mentioned.
Hereinafter, the decoration part in this invention is divided and demonstrated to a 1st aspect and a 2nd aspect.

(1) 1st aspect The decoration part in this aspect is the hardened | cured material in which the black pigment was contained in the resin binder containing photosensitive resin, and the pigment concentration of the black pigment with respect to the total solid content of a decoration part is 45. It is a member characterized by being in the range of mass% to 80 mass% and having a total light transmittance of 0.02% or less.

  In this embodiment, the black pigment relative to the total solid content of the decorative portion is not particularly limited as long as it is in the range of 45% by mass to 80% by mass, but in particular, in the range of 45% by mass to 70% by mass. It is particularly preferable that the content be in the range of 47% to 65% by mass. When the pigment concentration of the black pigment in this embodiment is within the above range, a predetermined light shielding property can be obtained. In this aspect, for example, when the decorative member is used in the flexible display device, the wiring, the control circuit, and the like arranged on the outer peripheral portion of the display area in the flexible display device can be hidden by the decorative portion. Therefore, when the decoration portion has a predetermined light shielding property, it is possible to suppress loss of appearance due to the view of the wiring, the control circuit, and the like. Moreover, since the pigment concentration of the black pigment is within the above range, the content of the resin binder that is the main component of the decorative portion can be suppressed within a predetermined range, and thus the thickness of the decorative portion is increased. The fall of the bending resistance by can be suppressed.

Here, the predetermined light-shielding property described above differs depending on the use of the decorative member of this aspect, but for example, the light-shielding property is sufficient to hide the wiring of the display device, the control circuit, and the like. preferable. Specifically, the total light transmittance of the decorative portion is preferably 0.02% or less, preferably 0.01% or less, and particularly preferably 0.005% or less. preferable.
In addition, the total light transmittance of a decorating part can be measured as follows. First, from the side where the decoration part of the decoration member is formed, the light of the standard light source C by the International Lighting Commission CIE is applied perpendicularly to the decoration member, and the transmitted light that has passed through the decoration member is represented in the Yxy table. A value obtained by dividing the Y value (%) in the color system by 100 is defined as the transmittance of the transmitted light. Next, only the transparent substrate is measured as a reference value, and the total light transmittance of the decoration part is calculated from the measured value obtained here and the transmittance of the transmitted light.
Moreover, the said total light transmittance of the decorating part in this aspect can be achieved when the pigment density | concentration of the black pigment contained in a decorating part exists in the predetermined range mentioned above.

Furthermore, the optical density when the thickness of the decorative portion in this embodiment is 1.5 μm is preferably 3.5 or more, more preferably 3.7 or more, particularly 4.0 or more. Is preferred.
Here, the optical density refers to an optical density (OD) value. Further, the OD value represented by the optical density is specified by “log ₁₀ (I _in / I _out )” using the intensity I _{in of the} incident light incident vertically and the intensity I _{out of the} transmitted light transmitted vertically. It can be measured by a microspectrophotometric colorimeter (manufactured by Olympus Corporation, OSP-SP200).
Moreover, the said OD value of the decorating part in this aspect can be achieved when the pigment density | concentration of the black pigment contained in a decorating part exists in the predetermined range mentioned above.

It is preferable that the decoration part in this aspect has predetermined | prescribed flexibility. When the decorative member in this aspect is used for a flexible display device, it can be freely bent, and the occurrence of peeling or cracking due to bending can be effectively suppressed. As a bendability of the decorative part, for example, in a bending durability test of a decorative member, for example, after performing a bending test 100,000 times or more with a bending radius of 3 mm, the decorative part cracks or the decorative part from the decorative member It is preferable that there is no peeling. Among them, after the bending test is performed 150,000 times or more with a bending radius of 3 mm, it is preferable that there is no cracking of the decorative part or peeling of the decorative part from the decorative member, particularly 200,000 times or more with a bending radius of 3 mm. After the bending test, it is preferable that there is no cracking of the decorative part or peeling of the decorative part from the decorative member.
In addition, the bending durability test mentioned above can be measured on condition of bending radius R = 3mm, rotation speed 120rpm, and stroke 20mm using the DLDMMLH-FU planar body U-shaped repetition tester by Yuasa System Co., Ltd. Moreover, in this aspect, after performing the bending test 100,000 times or more, when there was no crack of a decoration part or peeling of the decoration part from a decoration member, it evaluated that a decoration part had flexibility.
In addition, “there is no cracking of the decoration part” here means not only that there is no cracking of the decoration part but also a slight crack that does not cause a problem when using the decoration member. Is also included. Furthermore, "the decoration part does not peel off from the decorative member" means not only that the decorative part does not peel off from the decorative member, but also a degree that does not cause a problem when using the decorative member. The case of having a slight peeling of is also included.

The thickness of the decoration part in this aspect should just be a grade which can implement | achieve the pigment density | concentration of the black pigment mentioned above, and it is preferable that it is a grade which shows predetermined | prescribed flexibility especially. The specific thickness of the decorative portion is, for example, preferably in the range of 1.0 μm to 3.0 μm, more preferably in the range of 1.0 μm to 2.5 μm, particularly 1.0 μm to It is preferable to be in the range of 2.0 μm. When the decorative portion has a thickness within the above range, when the decorative member of this aspect is used in a flexible display device, it can be bent freely, and the effect of peeling and cracking caused by bending is effective. Can be suppressed.
Furthermore, in order for the decoration part in this aspect to achieve the thickness in the said range, showing desired light-shielding property, for example, the pigment density | concentration of the black pigment contained in a decoration part is in the predetermined range mentioned above. It is preferable to adjust.

  The black pigment in this embodiment is preferably a black pigment. The term “black” as used herein means other than black with no color, for example, bluish black, greenish black, reddish black, brownish black, orangeish black, whited black, etc. The color of Examples of such black pigments include titanium black (low-order titanium oxide, titanium oxynitride, etc.), carbon black, and the like. Titanium black has the same concentration and the same film thickness as carbon black, and can provide a higher light-shielding property for visible light. Therefore, when titanium black is used, the thickness of the decorative portion can be reduced as long as the light shielding property is the same as when carbon black is used. In addition, only 1 type of black pigments may be used for the black pigment in this aspect, and 2 or more types of black pigments may be mixed and used for it. Moreover, you may mix and use another colored pigment for a black pigment.

  Examples of the photosensitive resin in the present embodiment include materials generally used for the decorative portion. Specifically, for example, one kind of photosensitive resin having a photoreactive group such as a reactive vinyl group such as an acrylic resin, an epoxy resin, a polyimide resin, a polyvinyl cinnamate resin, and a cyclized rubber. The above can be used. In the acrylic resin, for example, a photosensitive resin composed of an alkali-soluble resin, a polyfunctional acrylate monomer, a photopolymerization initiator, other additives, and the like can be used as the resin component of the resin binder.

As the alkali-soluble resin, at least one kind of methacrylic acid ester copolymer such as benzyl methacrylate-methacrylic acid copolymer, cardo resin such as epoxy acrylate having a bisphenolfluorene structure, and the like can be used. As the polyfunctional acrylate monomer, for example, one or more of trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate and the like are used. be able to.
In the present invention, (meth) acrylate means either methacrylate or acrylate.

  As the photopolymerization initiator, one or more known ones such as alkylphenone series, oxime ester series, triazine series and titanate series can be used. For example, in the alkylphenone series, 2-methyl-1 [4- (methylthio) phenyl] -2-morpholinopropan-1-one (Irgacure (registered trademark) 907, manufactured by BASF Japan Ltd.), 2-benzyl- In 2-dimethylamino-1- (4-monofoliophenyl) butanone-1 (Irgacure (registered trademark) 369, manufactured by BASF Japan Ltd.), an oxime ester system, 1,2-octanedione, 1- [4- ( Phenylthio) phenyl]-, 2- (O-benzoyloxime) (Irgacure (registered trademark) OXE01, manufactured by BASF Japan Ltd.) and the like can be used.

  The resin binder in this embodiment can contain various known additives such as a photosensitizer, a dispersant, a surfactant, a stabilizer, and a leveling agent in addition to the materials described above.

  As mentioned above, the decoration part in this aspect is the hardened | cured material in which the black pigment was contained in the resin binder containing photosensitive resin. The “cured product” as used herein is not limited to a cured product of only a photopolymerizable compound, and can be used as, for example, a dispersant, a surfactant, or an alkali-soluble resin blended for alkali development suitability. This refers to a cured product that can usually contain a non-photopolymerizable polymer and other non-photopolymerizable compounds.

The formation method of the decoration part in this aspect will not be specifically limited if it is a method which can form a desired decoration part. For example, there is a so-called photolithography method in which a black photosensitive resin composition containing a black pigment and an uncured photosensitive resin is applied on a transparent substrate, which will be described later, and then exposed and developed in a predetermined pattern. Can be mentioned. The decorative part formed by the photolithography method can be made thinner than the decorative part formed by the screen printing method. Moreover, a decoration part can be formed with high linearity compared with the gravure printing method.
Examples of the coating method for applying the black photosensitive resin composition on the transparent substrate include known methods such as spin coating, roll coating, die coating, spray coating, and bead coating. .

(2) 2nd aspect The decorating part in this aspect is a member characterized by having a thickness in the range of 1.0 µm to 3.0 µm and a total light transmittance of 0.02% or less.

  The thickness of the decorative portion in this embodiment is preferably in the range of 1.0 μm to 3.0 μm, for example, and preferably in the range of 1.0 μm to 2.5 μm, particularly 1.0 μm to It is preferable to be in the range of 2.0 μm. When the decorative portion has a thickness within the above range, when the decorative member of this aspect is used in a flexible display device, it can be bent freely, and the effect of peeling and cracking caused by bending is effective. Can be suppressed.

The decoration part in this aspect has predetermined | prescribed light-shielding property while achieving the thickness mentioned above. Here, the predetermined light-shielding property described above differs depending on the use of the decorative member of this aspect, but for example, the light-shielding property is sufficient to hide the wiring of the display device, the control circuit, and the like. preferable. Specifically, the total light transmittance of the decorative portion is preferably 0.02% or less, preferably 0.01% or less, and particularly preferably 0.005% or less. preferable.
In addition, since the total light transmittance of a decoration part can be measured by the method similar to the total light transmittance of the decoration part described in the term of "(1) 1st aspect" mentioned above, Description is omitted.

  The decoration part in this aspect is characterized by having the above-described thickness and total light transmittance. In order to obtain a decoration part that satisfies such conditions, for example, the pigment concentration of the black pigment in the decoration part Is preferably within a predetermined range. Specifically, the black pigment with respect to the total solid content of the decorative portion is not particularly limited as long as it is in the range of 45% by mass to 80% by mass, but in particular, it is in the range of 45% by mass to 70% by mass. It is particularly preferable that the content be in the range of 47% to 65% by mass. In addition, in this aspect, since the effect when the pigment concentration of the black pigment with respect to the total solid content of the decoration part is within the above range can be the same as that in the above “(1) First aspect”, here The description in is omitted.

  Moreover, about the OD value of a decorating part in this aspect, a flexibility, material, a formation method, etc., since it can be made the same as that of said "(1) 1st aspect", description here is abbreviate | omitted.

2. Transparent base material The transparent base material in this invention is a member which has flexibility, and is a member which supports the decorating part mentioned above.

  Here, “transparent” means that it is transparent to the extent that the operator of the display device using the decorative member of the present invention does not interfere with visual recognition from the operation surface unless otherwise specified. Therefore, “transparent” includes colorless and transparent, and colored transparency that does not hinder visibility, and is not defined by strict transmittance, and the degree of transparency depends on the use of the decorative member of the present invention. Can be determined.

  The transparent base material in this invention will not be specifically limited if it is a member which has flexibility. Here, having flexibility can be confirmed by conducting a bending resistance test. For example, it can be confirmed by measuring under the conditions of a bending radius R = 3 mm, a rotation speed 120 rpm / min, and a stroke 20 mm using a DLDMLH-FU planar body U-shaped repeat tester manufactured by Yuasa System Co., Ltd.

  As a material which comprises the transparent base material in this invention, it is preferable that it is a material which can provide predetermined | prescribed flexibility. Examples thereof include polyester resins such as polyimide (PI), polyethylene terephthalate (PET), and polyethylene naphthalate (PEN), or acrylic resins, polycarbonate resins, and cycloolefin resins. Depending on the thickness, a glass substrate can be used. In the present invention, PI is preferably used from the viewpoints of flexibility and heat resistance.

  The thickness of the transparent substrate in the present invention is preferably a thickness that has a predetermined flexibility and a rigidity that functions as a decorative member. The specific thickness of the transparent substrate is preferably within a range of 20 μm to 100 μm, more preferably within a range of 20 μm to 85 μm, and particularly preferably within a range of 30 μm to 60 μm.

  As the transparent substrate in the present invention, a commercially available one may be prepared. For example, a desired transparent substrate may be formed by applying a predetermined resin composition on a glass substrate. Examples of the coating method for applying the resin composition onto the glass substrate include known methods such as spin coating, roll coating, die coating, spray coating, and bead coating.

3. Black Matrix In the present invention, a black matrix having a plurality of openings may be provided in a display area that is on the same plane as the decorative portion and defined by the decorative portion. Specifically, as shown in FIG. 2, a black matrix 4 having an opening in the display area D that is on the same plane as the decorative portion 2 on the transparent substrate 3 and defined by the decorative portion 2 is provided. You may do it.

The material of the black matrix is preferably the same material as that of the decorative portion described above. This is because the black matrix can be formed at the same time when forming the decorative portion, and therefore it is not necessary to provide a separate formation step for forming the black matrix. That is, a black matrix can be formed without increasing the number of steps.
The black matrix is usually formed by a photolithography method. Furthermore, it is preferable to form the decorative portion by photolithography from the viewpoint of reducing the thickness. Thus, since both the black matrix and the decorative portion can be formed by a photolithography method, it is preferable to form them simultaneously.
In addition, about the specific material of a black matrix, since it can be made to be the same as that of the material of the decorating part mentioned above, description here is abbreviate | omitted.

  The black matrix in the present invention has a plurality of openings. The shape of the opening can be appropriately adjusted according to the design of the display device in which the decorative member of the present invention is used, and examples thereof include a triangular shape, a quadrangular shape, a rhombus shape, and a hexagonal shape.

  The thickness of the black matrix is preferably such that it can function as a black matrix. Especially, it is preferable that it is the same as the thickness of a decoration part. It is because it can form simultaneously with a decoration part. In addition, since the specific thickness of a black matrix can be made the same as the thickness of the decoration part mentioned above, description here is abbreviate | omitted.

  In addition, the size, number, pitch, and the like of the plurality of openings arranged in the black matrix can be appropriately adjusted according to the design of the display device in which the decorative member of the present invention is used. Is omitted.

  As a black matrix formation method, the same formation method as that of a black matrix used in a general display device can be used. For example, a method of forming a black matrix layer by a sputtering method, a vacuum evaporation method, a coating method, or the like and patterning the black matrix layer by a photolithography method can be used. Therefore, when forming the black matrix and the decorative part at the same time, a layer made of the decorative part and the constituent material of the black matrix is formed on the transparent substrate, and then the layer is patterned by a photolithography method. Thus, a decorative portion and a black matrix can be formed.

4). Colored part In this invention, you may have a colored part in the opening part of a black matrix. That is, the coloring part is a pattern-like member arranged in the opening of the black matrix. Specifically, as shown in FIG. 3, the black matrix 4 may have colored portions 5 (here, a red colored portion 5R, a green colored portion 5G, and a blue colored portion 5B).

  The colored part has, for example, three colored parts of red, green, and blue. The color of the colored portion may be any color as long as it contains at least three colors of red, green, and blue. For example, three colors of red, green, and blue, four colors of red, green, blue, and yellow, or red, Five colors such as green, blue, yellow, and cyan may be used.

As a coloring part, what disperse | distributed the coloring material in binder resin can be used, for example.
Examples of the color material used in the colored portion include pigments and dyes of each color. For example, examples of the color material used in the red colored layer include perylene pigments, lake pigments, azo pigments, quinacridone pigments, anthraquinone pigments, anthracene pigments, and isoindoline pigments. Examples of the colorant used for the green colored layer include phthalocyanine pigments such as halogen polysubstituted phthalocyanine pigments or halogen polysubstituted copper phthalocyanine pigments, triphenylmethane basic dyes, isoindoline pigments, and isoindoline pigments. Examples include linone pigments. Furthermore, examples of the color material used in the blue colored layer include copper phthalocyanine pigments, anthraquinone pigments, indanthrene pigments, indophenol pigments, cyanine pigments, dioxazine pigments, and the like. These pigments and dyes may be used alone or in combination of two or more. Examples of the binder resin used for the colored portion include photosensitive resins having reactive vinyl groups such as acrylate, methacrylate, polyvinyl cinnamate, or cyclized rubber.

  In addition to the above-described materials, the colored portion may contain a photopolymerization initiator, a sensitizer, a coatability improver, a development improver, a crosslinking agent, a polymerization inhibitor, a plasticizer, a flame retardant, etc. It can be included.

  In addition, a white layer containing a binder resin may be formed on the same plane where the colored portion is formed, without containing the above-described color material.

  The arrangement of the colored portions is not particularly limited, and may be a known arrangement such as a stripe type, a mosaic type, a triangle type, or a four-pixel arrangement type.

  The thickness of the colored portion can be the same as the thickness of a general colored portion in the color filter, and can be set, for example, within a range of 1 μm to 5 μm.

  Examples of the forming method for forming the patterned colored portion in the opening of the black matrix include a photolithography method, an ink jet method, and a printing method.

5. Sensor Electrode In the present invention, a sensor electrode capable of detecting the position of the touch panel may be provided on the black matrix.

  In the present invention, any sensor electrode capable of detecting the position of the touch panel may be used, and a sensor electrode used for a general touch panel can be used. In general, the sensor electrode in the present invention preferably has a mesh-like first electrode and second electrode. Specifically, as shown in FIG. 4, the first electrode 6 a and the second electrode 6 b may be provided on the black matrix 4. In FIG. 4, the first electrode 6a and the second electrode 6b are alternately arranged on the adjacent black matrix 4, and the first electrode 6a and the second electrode 6b are interposed between the first electrode 6a and the second electrode 6b. In the example, the insulating layer 7 for electrically insulating the two electrodes 6b is disposed, and the protective layer 8 is disposed on the second electrode 6b.

  For example, Japanese Patent No. 4610416, Japanese Patent Application Laid-Open No. 2010-286886, Japanese Patent Application Laid-Open No. 2004-192093, and Japanese Patent Application Laid-Open No. 2010-202093 are the shape of the first electrode and the second electrode in the sensor electrode in plan view and plan view. Since it can be the same as that of a sensor electrode used for a general touch panel as disclosed in Japanese Patent Application Laid-Open No. -277392, Japanese Patent Application Laid-Open No. 2011-129501, etc., description thereof is omitted here.

  Examples of the material used for the sensor electrode include silver, gold, chromium, platinum, aluminum alone, or an alloy mainly composed of any of these. As the metal alloy, an alloy of silver, palladium and copper called APC is widely used. As the metal composite, a three-layer structure of molybdenum, aluminum, and molybdenum called MAM is also applicable. Furthermore, for example, a conductive polymer obtained by adding the above metal to a resin material such as PEDOT can be used.

  The sensor electrode in the present invention is preferably disposed on the black matrix described above. Therefore, the line width of the sensor electrode can be appropriately adjusted according to the line width of the black matrix, but is preferably equal to or less than the line width of the black matrix. For example, the line width of the sensor electrode is preferably in the range of 1.0 μm to 28 μm, more preferably in the range of 1.5 μm to 23 μm, and particularly in the range of 2.0 μm to 20 μm. It is preferable to be within. When the line width of the sensor electrode is within the above range, the sensor electrode can be suitably arranged on the black matrix, and when the decorative member of the present invention is used for the display device, the visibility of the display device is improved. The influence of can be suppressed. Moreover, peeling and a crack of a sensor electrode at the time of bending the decorating member of this invention can be suppressed effectively.

  Moreover, it is preferable that the thickness of the sensor electrode is a thickness that can exhibit the conductivity sufficient to detect the position of the touch panel. The thickness of the sensor electrode is, for example, preferably in the range of 10 nm to 1000 nm, more preferably in the range of 50 nm to 800 nm, and particularly preferably in the range of 100 nm to 200 nm. When the thickness of the sensor electrode is within the above range, peeling and cracking of the sensor electrode when the decorative member of the present invention is bent can be effectively suppressed.

  As a method for forming the sensor electrode, for example, a method capable of forming a mesh-like first electrode and second electrode is preferable. Specifically, there is a method of forming a conductive layer using a conductive material constituting the sensor electrode, then forming a resist pattern on the conductive layer, and etching the conductive layer using the resist pattern as a mask. It is done. At this time, as a method for forming the conductive layer, for example, a dry process such as a vacuum deposition method, a sputtering method, a CVD method, or an ion plating method can be used.

6). Circularly polarizing plate In the present invention, a circularly polarizing plate may be provided in the display area defined by the decorative portion. Specifically, as shown in FIG. 5, a circularly polarizing plate 9 may be provided in the display area D defined by the decorating unit 2, and in this case, the opening of the decorating unit 2 is flattened. Layer 11 can be disposed. In addition, in this invention, since the thickness of a decorating part can be made thin, a circularly-polarizing plate can also be arrange | positioned through an adhesion layer on a decorating member.

  The circularly polarizing plate in the present invention may be the same as that used in a general display device, and may have, for example, a polarizing plate and various retardation layers.

  The polarizing plate used for the circularly polarizing plate, for example, decomposes the transmitted light into two orthogonally polarized components, transmits the polarized component in one direction (a direction parallel to the transmission axis), and is orthogonal to the one direction. The polarized component in the other direction (direction parallel to the absorption axis) can be absorbed. Such a polarizing plate can be formed by adsorbing and orienting iodine compound molecules on a film material made of polyvinyl alcohol (PVA).

  Examples of the retardation layer include a retardation layer having an in-plane retardation value corresponding to λ / 4, a retardation layer having an in-plane retardation value corresponding to λ / 2, and a positive C plate (+ C plate). ) And the like. About the combination and structure of a phase difference layer, it can adjust suitably according to the use etc. of the decorating member of this invention, and it does not specifically limit.

7). Other members The decoration member of this invention should just have the transparent base material and decoration part which were mentioned above, and may have another member as needed. Examples of other members include a flattening layer, an adhesive layer, an insulating layer, a protective layer, and an antireflection layer.

(1) Flattening layer The flattening layer in this invention can be arrange | positioned in the area | region in which the decorating part is not formed on the transparent base material, ie, the opening part of a decorating part. When the flattening layer is disposed, the decorative member can be easily installed when the decorative member of the present invention is used in a flexible display device.

  As the material constituting the planarizing layer in the present invention, it is preferable to use a material having a predetermined light transmission property and a predetermined flexibility as in the decorative portion. Specifically, a resin material can be used. In addition, about the resin material used for a planarization layer, since it can be the same as that of the resin material used for the transparent base mentioned above, description here is abbreviate | omitted.

  The thickness of the planarizing layer is preferably such a thickness that the above-described effects can be obtained by providing the planarizing layer. Specifically, it is preferable that it is equal to the thickness of the decoration part mentioned above, or is thinner than the thickness of a decoration part.

(2) Adhesive layer The adhesive layer in this invention can be arrange | positioned in the area | region in which the decoration part is not formed on the transparent base material, ie, the opening part of a decoration part. When the adhesive layer is disposed, the decorative member can be easily attached when the decorative member of the present invention is used in a flexible display device.

  As the material constituting the pressure-sensitive adhesive layer in the present invention, it is preferable to use a material having a predetermined light transmittance and having a predetermined flexibility as in the decorative portion. Specifically, a general material such as a photocurable resin or a thermosetting resin can be used.

  The thickness of the pressure-sensitive adhesive layer is preferably such a thickness that the decorative member of the present invention can be bonded to the flexible display device, for example. Specifically, it is preferable that the thickness is equal to the thickness of the decorative portion described above or thicker than the decorative portion.

(3) Insulating layer When the sensor electrode 6 has the mesh-shaped 1st electrode 6a and the 2nd electrode 6b, as shown by the code | symbol 7 of FIG. It can be used when the second electrode 6b is electrically insulated.

  The material of the insulating layer in the present invention is preferably a material having a desired insulating property, and materials generally used for touch panels can be used. Specifically, a light-transmitting acrylic resin, siloxane resin, or the like can be given.

  The thickness of the insulating layer is preferably a thickness that can electrically insulate the first electrode and the second electrode and prevent a short circuit, for example. The specific thickness of the insulating layer can be the same as the thickness of the insulating layer used in a general touch panel, and can be, for example, in the range of 0.5 μm to 3 μm.

(4) Protective layer The protective layer in this invention can be arrange | positioned so that a decoration part and an opening part may be covered on the surface of the side in which the decoration part of the transparent base material was formed. For example, as indicated by reference numeral 8 in FIG. 4, when the sensor electrode 6 has a mesh-like first electrode 6a and second electrode 6b, the sensor electrode 6 can be disposed so as to cover the second electrode 6b. By providing the protective layer, the protective function of the decorative member of the present invention can be enhanced.

  As the material constituting the protective layer in the present invention, it is preferable to use a material having a predetermined light transmittance and a predetermined flexibility. For example, the resin material which can be used for a general protective layer is mentioned, It is preferable that it is a resin material which has heat resistance and abrasion resistance especially. Specifically, an epoxy resin, an acrylic resin, a polyimide resin, etc. are mentioned.

  The thickness of the protective layer is preferably such a thickness that can exert a protective function as a protective layer, for example, and does not impair the flexibility of the decorative member of the present invention. Specifically, for example, it is preferably in the range of 1 μm to 5 μm.

(5) Antireflection layer The antireflection layer in this invention can be arrange | positioned so that a decoration part and an opening part may be covered on the surface of the side in which the decoration part of the transparent base material was formed. By disposing the antireflection layer, reflection of external light onto the surface of the decorative member of the present invention can be suppressed, and visibility can be improved.

  As the material constituting the antireflection layer of the present invention, it is preferable to use a material having a predetermined light transmittance and a predetermined flexibility. Specifically, since materials that can be used for a general antireflection layer can be given, description thereof is omitted here.

  The thickness of the antireflection layer is preferably such that it can exhibit an antireflection function as an antireflection layer, for example, and does not impair the flexibility of the decorative member of the present invention. Note that the specific thickness of the antireflection layer can be appropriately adjusted according to the material constituting the antireflection layer, and thus the description thereof is omitted here.

(6) Infrared transmission window In this invention, the infrared transmission window may be formed by the decorating part. An infrared transmission window is a part which shields visible light and permeate | transmits infrared light, for example, functions when the decoration member of this invention is used for the mobile telephone provided with touchscreen functions, such as a smart phone. Specifically, a mobile phone with a touch panel function is used to prevent malfunction of the touch panel when the mobile phone is put on the ear during a call, or to extend the battery life by turning off the display panel. Although a human sensor that senses the approach of human skin can be preferably used, the infrared transmission window functions as this human sensor.

  When the infrared transmission window is formed by the decoration part, the infrared transmission is performed so as to cover the infrared transmission window formed between the transparent base material and the decoration part having the infrared transmission window or in the decoration part. Layers are placed. Note that the specific configuration of the infrared transmission window, the infrared transmission layer, and the like can be the same as, for example, Japanese Patent No. 539261, and thus the description thereof is omitted here.

  The infrared transmission window is preferably formed by a method capable of forming a desired infrared transmission window. For example, it is preferable to form the infrared transmission window at the same time as the step of forming the decorative portion. Specifically, a black photosensitive resin composition containing a black pigment and an uncured photosensitive resin is applied on a transparent substrate, and then exposed and developed in a predetermined pattern, so-called photolithography method. It is preferable that the infrared transmission window is also patterned at the same time when the decorative portion is formed by patterning. This is because an additional step of forming the infrared transmission window is not required, and thus an increase in the manufacturing process due to the formation of the infrared transmission window can be suppressed.

  In addition, the infrared transmission layer disposed in the infrared transmission window is applied with an infrared transmitting composition for forming the infrared transmitting layer on a transparent substrate, and then exposed and developed in a predetermined pattern. It can be formed by patterning by a so-called photolithography method.

8). The manufacturing method of a decorating member The manufacturing method of the decorating member of this invention will not be specifically limited if it is a method which can obtain a desired decorating member.
Hereinafter, description will be given with reference to the drawings.

  6A to 6C are schematic process diagrams illustrating an example of a method for producing a decorative member according to the present invention. As shown to Fig.6 (a), the transparent base material 3 is prepared, and next, as shown to FIG.6 (b), the decoration part 2 is patterned on the transparent base material 3 by the photolithographic method. The decorative member 1 can be manufactured by forming. In addition, when arrange | positioning a decoration part, roll-to-roll can also be used. Moreover, as a method of arrange | positioning the decorating member obtained in this way, for example in a flexible display apparatus, as shown, for example in FIG.6 (c), arrange | positioning a decorating member on the carrier glass base material 13 Then, although not shown in figure, after bonding the obtained laminated body to a flexible display apparatus, the method of peeling a carrier glass base material is mentioned. At this time, you may have the adhesive layer which can be removed again between a carrier glass base material and a transparent base material.

  Moreover, Fig.7 (a)-(c) is a schematic process drawing which shows the other example of the manufacturing method of the decorating member of this invention. As shown in FIG. 7 (a), a carrier glass substrate 13 is prepared. Next, as shown in FIG. 7 (b), a transparent substrate 3 is formed on the carrier glass substrate 13 by a coating method. Subsequently, as shown in FIG.7 (c), a decorating member can be manufactured by forming the decorating part 2 in the pattern form on the transparent base material 3 with the photolithographic method. Moreover, as a method of arranging the decorative member obtained in this way, for example, in a flexible display device, although not shown, after the laminate obtained in FIG. 7C is bonded to the flexible display device And a method of peeling the carrier glass substrate.

  When forming the decorative member of the present invention, the adhesive layer used between the transparent substrate and the carrier glass substrate can be used as long as it is a general adhesive layer, and has an initial adhesive strength and removability. From the viewpoint, it is preferable to use an acrylic pressure-sensitive adhesive. The composition of the acrylic pressure-sensitive adhesive is not particularly limited.

  In the present invention, by forming the decorative member on the carrier glass substrate, it is possible to suppress problems such as shrinkage of the decorative member due to heating in the manufacturing process. Therefore, when a black matrix or the like is arranged in the display area of the decorating member, high-definition alignment is possible.

  In addition, about the detailed formation method of each member, since it is the same as that of the content demonstrated in the item about each member, description here is abbreviate | omitted.

9. Specific Example Specific examples of the decorative member of the present invention include the following configurations.

(1) Specific example 1
Specific example 1 of the decorative member of the present invention is an example in which the decorative member has a sensor electrode capable of detecting the position of the touch panel.
Hereinafter, specific example 1 of the present invention will be described with reference to the drawings.

  The specific example 1 of the decorating member of the present invention is, as shown in FIG. 8, a transparent base material 3, a decorating part 2 disposed on the transparent base material 3, and a display area defined by the decorating part 2. And a black matrix 4 having a plurality of openings and a mesh-like sensor electrode 6 disposed on the black matrix 4. In the first specific example, the sensor electrode 6 has a mesh-like first electrode 6 a and second electrode 6 b, and the first electrode 6 a and the second electrode 6 b are electrically insulated via the insulating layer 7. Yes.

  In the first specific example of the present invention, by having the black matrix on the same plane as the decorative portion, the decorative portion and the black matrix can be formed of the same material and at the same time. Therefore, it is possible to reduce the number of forming steps compared to the case where the decorative portion and the black matrix are formed separately. In addition, since the sensor electrode is integrated with the decorative member, the thickness of the display device can be reduced when the decorative member is used for the display device as compared with the case where the sensor electrode base material is separately formed on the decorative member. Can be made thinner.

(2) Specific example 2
Specific example 2 of the decorative member of the present invention is an example in which the decorative member has a sensor electrode and a colored portion.
Hereinafter, specific example 2 of the present invention will be described with reference to the drawings.

  The specific example 2 of the decorating member of the present invention is, as shown in FIG. 9, a transparent base material 3, a decorating part 2 arranged on the transparent base material 3, and a display area defined by the decorating part 2. And a black matrix 4 having a plurality of openings, a mesh-like sensor electrode 6 disposed on the black matrix 4, and a coloring portion 15 (here, a red coloring portion) disposed in the opening of the black matrix. 15R, green coloring portion 15G, and blue coloring portion 15B). In the second specific example, the sensor electrode 6 has a mesh-like first electrode 6 a and second electrode 6 b, and the first electrode 6 a and the second electrode 6 b are electrically insulated via the insulating layer 7. Yes.

  In the specific example 2 in this invention, it has a coloring part in the opening part of a black matrix, and a sensor electrode and a coloring part are separately provided on a decorating member by integrating a sensor electrode and a coloring part in a decorating member. Compared with the case of forming a colored layer having, the thickness of the display device can be reduced when the decorative member is used in the display device.

(3) Specific example 3
Specific example 3 of the decorative member of the present invention is an example in which the decorative member has a circularly polarizing plate and a sensor electrode.
Hereinafter, specific example 3 of the present invention will be described with reference to the drawings.

  A specific example 3 of the decorative member of the present invention is, as shown in FIG. 10, a transparent base material 3, a decorative portion 2 arranged on the transparent base material 3, and a display area defined by the decorative portion 2. A circularly polarizing plate 9, a black matrix 4 disposed in a display region on the circularly polarizing plate 9 and having a plurality of openings, and a mesh-like sensor electrode 6 disposed on the black matrix 4. It is an example. In the third specific example, the sensor electrode 6 has a mesh-like first electrode 6 a and second electrode 6 b, and the first electrode 6 a and the second electrode 6 b are electrically insulated via the insulating layer 7. Yes.

  In the third specific example of the present invention, since a thinner film can be realized as compared with the conventional decorative portion, the step between the transparent substrate and the decorative portion can be extremely small. Therefore, the circularly polarizing plate can be formed as it is without using the flattening layer for filling the step, and when the decorative member is used in the display device as compared with the case where the flattening layer is used, The thickness of the display device can be reduced.

(4) Specific example 4
Specific example 4 of the decorative member of the present invention is an example in which the decorative member has a circularly polarizing plate, a sensor electrode, and a colored portion.
Hereinafter, specific example 4 in the present invention will be described with reference to the drawings.

  A specific example 4 of the decorative member of the present invention is, as shown in FIG. 11, a transparent base material 3, a decorative part 2 arranged on the transparent base material 3, and a display area defined by the decorative part 2. A circularly polarizing plate 9, a black matrix 4 disposed in a display region on the circularly polarizing plate 9 and having a plurality of openings, a mesh-like sensor electrode 6 disposed on the black matrix 4, and a black This is an example having the colored portions 15 (here, the red colored portion 15R, the green colored portion 15G, and the blue colored portion 15B) arranged in the openings of the matrix. In the fourth specific example, the sensor electrode 6 includes a mesh-like first electrode 6 a and second electrode 6 b, and the first electrode 6 a and the second electrode 6 b are electrically insulated via the insulating layer 7. Yes.

  In the example 4 in the present invention, since the film thickness can be reduced as compared with the conventional decorative portion, the step between the transparent base material and the decorative portion can be extremely small. Therefore, the circularly polarizing plate can be formed as it is without using the flattening layer for filling the step, and when the decorative member is used in the display device as compared with the case where the flattening layer is used, The thickness of the display device can be reduced. Moreover, it has a colored part at the opening of the black matrix, and the sensor electrode and the colored part are integrated with the decorative member, so that a sensor electrode substrate and a colored layer are separately formed on the decorative member. And when a decorating member is used for a display apparatus, it is possible to make the thickness of a display apparatus thin.

B. Display device The display device of the present invention is a device which has the decoration member mentioned above and a display panel.
The display device of the present invention will be described below with reference to the drawings.

  FIG. 12 is a schematic plan view showing an example of the display device of the present invention. As shown in FIG. 12, in the present invention, the decorative member 1 and the display panel 20 may be included. Moreover, when the decorating member 1 does not have a touch panel function, the display device 100 of the present invention may include the touch panel 10 between the decorating member 1 and the display panel 20.

  Note that the specific configuration of the display device of the present invention can be the same as that of Japanese Patent No. 5392641, for example, and detailed description thereof is omitted here.

ADVANTAGE OF THE INVENTION According to this invention, when a display apparatus is bent, peeling of a decoration part and generation | occurrence | production of a crack can be suppressed. Moreover, when a decoration part has predetermined | prescribed light-shielding property, wiring etc. can be hidden by a decoration part and the outstanding external appearance can be obtained.
In addition, about a specific effect, since it can be made to be the same as that of the content described in the term of the said "A. decoration member", description here is abbreviate | omitted.

Although the display apparatus of this invention will not be specifically limited if it has the decorating member and display panel which were mentioned above, It is preferable to have predetermined | prescribed flexibility. It is because the effect by using the decorating member in this invention becomes remarkable.
Here, the predetermined flexibility means that no defect occurs in the characteristics of the display device after the bending durability test is performed 100,000 times on the display device of the present invention.
In addition, the bending endurance test of the display device can be measured by a DLDMLH-FU planar body U-shaped repetitive testing machine manufactured by Yuasa System Co., Ltd., a bending radius R = 3 mm, a rotation speed 120 rpm / min, and a stroke 20 mm, or DLDMMLH-FS It can be measured by a planar body no-load U-shaped stretch tester, bending radius R = 3 mm, rotation speed 120 rpm / min, stroke 20 mm.

  Hereinafter, the decorative member, the display panel, and the touch panel which constitute the display device of the present invention will be described.

1. Decoration member The decoration member in this invention is a member which has the transparent base material which has flexibility, and the decorating part arrange | positioned on the said transparent base material. In addition, about a decorating member, since it can be made to be the same as that of the content described in the term of the said "A. decorating member", description here is abbreviate | omitted.

2. Display panel The display panel in the present invention is typically a liquid crystal display panel or an electroluminescence (EL) panel, but may be an electronic paper panel, a display device using a cathode ray tube, or various known display panels.

  The above-described display panel can be the same as that used in a general display device, and thus a specific description thereof is omitted here.

3. Touch Panel The touch panel in the present invention is typically a projected capacitive touch panel capable of multi-touch (multi-point simultaneous input). In addition, a surface capacitive touch panel, a resistive touch panel, electromagnetic Any of various known position detection touch panels including a position detection method that does not require a transparent electrode, such as a guidance method and an optical method, can be used.

  The touch panel may have some opaque components such as wiring, a control circuit, and a connector for electrically connecting them to the outer peripheral portion of the display area in the display device. It is preferable that these opaque components are arranged so as to overlap in plan view with the opaque region where the decorative portion is arranged in the decorative member. It is because an opaque component can be hidden by the decoration part and the external appearance of a display apparatus can be improved.

4). Applications The display device of the present invention includes, for example, mobile phones such as smartphones, portable information terminals such as tablet PCs, personal computers, car navigation systems, digital cameras, electronic notebooks, game machines, vending machines, ATM terminals, POS A terminal etc. are mentioned.

C. Manufacturing method of organic EL display device The manufacturing method of the organic EL display device of the present invention includes a decorative member bonded on a first glass substrate and having a decorative portion formed on the first transparent substrate. A decorative member preparing step to prepare, a sensor electrode base material laminating step of laminating a sensor electrode base material having a sensor electrode capable of detecting the position of the touch panel on the decorative member, and a second glass substrate An organic EL base material preparation step for preparing an organic EL base material attached on a material, a sensor electrode base material laminated on the decorative member, and a bonding step for attaching the organic EL base material together The decorative member is the above-mentioned decorative member.

  The manufacturing method of the organic EL display device of the present invention will be described with reference to the drawings. The manufacturing method of the organic EL display device of the present invention can be performed, for example, by steps as shown in FIGS. First, as shown to Fig.13 (a), it has the decorating member preparation process which affixes the decorating member 1 on the 1st carrier glass base material 13, and prepares the decorating member 1. FIG. Next, as shown in FIG.13 (b), it has a sensor electrode base material lamination | stacking process which laminates | stacks a sensor electrode base material on a decorating member. The sensor electrode base material 40 here forms a black matrix 4 having an opening on the decorative member 1, and forms a first electrode 6 a and a second electrode 6 b which are sensor electrodes on the black matrix 4. By doing so, it can be obtained. Subsequently, as shown in FIG. 13C, on the second carrier glass substrate 13, the second transparent substrate 3, the organic EL pixel 15 (here, the red pixel 15R, the green pixel 15G, the blue pixel). 15B), and an organic EL base material preparation step of preparing the organic EL base material 50 by attaching an organic EL base material having a thin film transistor (TFT) wiring 14. Finally, as shown in FIG. 13 (d), the organic EL display device includes a bonding step of bonding the sensor electrode base material 40 and the organic EL base material 50, and although not shown, the carrier glass is peeled off. Can be obtained. The sensor electrode substrate 40 and the organic EL substrate 50 can be bonded together by the adhesive layer 16.

  In the present invention, a color filter may be provided between the sensor electrode substrate and the organic EL substrate. Moreover, you may have a circularly-polarizing plate between the decorating member and the sensor electrode base material.

  Hereinafter, the sensor electrode base material forming step and the organic EL base material forming step in the method for manufacturing the organic EL display device of the present invention will be described.

1. Decoration member preparation process The decoration member preparation process in this invention is the process of sticking on the 1st glass base material and preparing the decoration member in which the decoration part was formed on the 1st transparent base material. is there.

  The 1st glass base material used in this process can use the thing similar to the glass base material used in the manufacturing process of a general display apparatus. Moreover, since the 1st glass base material used here is a member which can be peeled at the end of the manufacturing method of this invention, it does not specifically limit about the thickness or magnitude | size.

  In addition, about the decorating member formed in this process, since it can be made to be the same as that of the content described in the term of the said "A. decorating member", description here is abbreviate | omitted.

2. Sensor electrode base material lamination process The sensor electrode base material lamination process in this invention is a process of laminating | stacking the sensor electrode base material which has a sensor electrode which can perform the position detection of a touch panel on a decorating member.

  In addition, about the decorating member, black matrix, and sensor electrode formed in this process, since it can be made to be the same as that of the content described in the above-mentioned item of "A. decorating member", description here is abbreviate | omitted. .

3. Organic EL base material preparation step The organic EL base material preparation step in the present invention is a step of preparing an organic EL base material adhered on the second glass base material.

  If the organic EL base material formed in this process is a general organic EL base material, it will not specifically limit, A manufacturing method can also employ | adopt a well-known method. The organic EL base material can be the same as, for example, Japanese Patent Application Laid-Open No. 2015-162588, Japanese Patent Application Laid-Open No. 2015-072827, and the like, and will not be described here.

4). Bonding process The bonding process in this invention is a process of bonding the sensor electrode base material laminated | stacked on the decorating member, and an organic EL base material.

  Bonding in this step can be performed by providing an adhesive layer or the like between the sensor electrode substrate and the organic EL substrate. Specifically, it can be bonded by placing an adhesive layer on the surface of the sensor electrode substrate or the organic EL substrate and press-bonding it.

  Since the adhesive layer used in this step can be the same as that used in a general organic EL display device forming step, description thereof is omitted here.

5. Other process In this invention, what is necessary is just to have the decorating member preparation process mentioned above, a sensor electrode base material lamination process, an organic EL base material preparation process, and a bonding process, and other processes as needed. You may have.
For example, when providing a circularly-polarizing plate between a decorating member and a sensor electrode base material, a circularly-polarizing plate is laminated | stacked on a decorating member between a decorating member preparation process and a sensor electrode base material lamination process. You may have a circularly-polarizing plate lamination process.
Moreover, when providing a color filter between a sensor electrode base material and an organic EL base material, the color filter which laminates | stacks a color filter on an organic EL base material between an organic EL base material preparation process and a bonding process You may have a lamination process.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

[Examples 1-4, Comparative Examples 1-2]
On a transparent substrate (material: triacetyl cellulose (TAC), thickness: 40 μm), a decorative part forming composition having the following composition was applied using a die coating method, and the total light transmittance as shown in Table 1 was applied. And the decoration part which has thickness was formed. In this way, a decorative member was formed. As the decorative member forming composition, a photosensitive resin composition containing coated carbon as a pigment and mainly composed of an acrylic resin and an alkali-soluble resin was used.

[Evaluation]
About the decoration member obtained by Examples 1-4 and Comparative Examples 1-2, using Yuasa System Co., Ltd. DLDMMLH-FU planar body U-shaped repetition tester, bending radius R = 3mm, rotation speed 120rpm, The bending endurance test was conducted 200,000 times under the condition of a stroke of 20 mm, and then the decorative part was evaluated for cracking or peeling. The results are as shown in Table 1 below.
・ Break ○: No cracking ×: With cracking / peeling ○: Without peeling ×: With peeling

DESCRIPTION OF SYMBOLS 1 ... Decorating member 2 ... Decorating part 3 ... Transparent base material 4 ... Black matrix 5 ... Colored part 6 ... Sensor electrode 9 ... Circularly polarizing plate 20 ... Display panel 40 ... Sensor electrode base material 50 ... Organic EL base material 100 ... Display device 200 ... Organic EL display device D ... Display area

Claims (11)

A decorative member having a transparent base material having flexibility and a decorative portion arranged on the transparent base material,
The decorative part is a cured product containing a black pigment in a resin binder containing a photosensitive resin,
The pigment concentration of the black pigment with respect to the total solid content of the decorative portion is in the range of 45% by mass to 80% by mass,
The decorating member, wherein the total light transmittance of the decorating part is 0.02% or less. The decorative portion has a thickness in the range of 1.0 μm to 3.0 μm,
The decorative member according to claim 1, wherein after the bending endurance test with a bending radius of 3 mm is performed 100,000 times or more, the decorative portion is not cracked or peeled off. A decorative member having a transparent base material having flexibility and a decorative portion arranged on the transparent base material,
The decorating member has a thickness in a range of 1.0 μm to 3.0 μm and a total light transmittance of 0.02% or less.   The decorative member according to claim 3, wherein after the bending endurance test with a bending radius of 3 mm is performed 100,000 times or more, the decorative portion is not cracked or peeled off. A black matrix having a plurality of openings in a display area that is on the same plane as the decorative portion and defined by the decorative portion;
The said black matrix is comprised with the same material as the said decorating part, The decorating member in any one of Claim 1 to 4 characterized by the above-mentioned.   The decorative member according to claim 5, wherein the opening has a colored portion.   The decoration member according to claim 5 or 6, further comprising a sensor electrode capable of detecting a position of a touch panel on the black matrix.   The decorative member according to any one of claims 1 to 4, further comprising a circularly polarizing plate in a display region defined by the decorative portion. On the circularly polarizing plate, has a black matrix having a plurality of openings,
The decoration member according to claim 8, further comprising a sensor electrode capable of detecting a position of a touch panel on the black matrix. A decorative member according to any one of claims 1 to 9, and
A display device comprising: a display panel. A decorative member preparing step of preparing a decorative member that is adhered on the first glass base material and on which the decorative portion is formed on the first transparent base material;
On the decorative member, a sensor electrode base material laminating step of laminating a sensor electrode base material having a sensor electrode capable of detecting the position of the touch panel;
An organic electroluminescence base material preparation step of preparing an organic electroluminescence base material adhered on the second glass base material;
A bonding step of bonding the sensor electrode base material laminated on the decorative member and the organic electroluminescence base material;
The said decorating member is the said decorating member described in the claim in any one of Claims 1-4, The manufacturing method of the organic electroluminescent display apparatus characterized by the above-mentioned.