JP2015203745A - Columnar object-formed substrate for electronic element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a columnar object-formed substrate for an electronic element, the columnar object-formed substrate having columnar formed objects which preferably maintain a fixed distance between the columnar object-formed substrate and an opposing substrate when the electronic element including these is manufactured.SOLUTION: The above problem is cleared by providing a columnar object-formed substrate for an electronic element, the columnar object-formed substrate comprising: a substrate; and columnar formed objects which are formed on the substrate to maintain a fixed distance between the substrate and an opposing substrate that is used when the electronic element is manufactured. Each of the columnar formed objects is shaped to have an upper base and lower base having same area, as well as a maximum area section located between the upper and lower bases and having a cross-section with the maximum area in a direction parallel to the substrate.

Description

  The present invention relates to a columnar article-attached substrate for an electronic element and a substrate with a columnar article-formation for a liquid crystal lens, which have a columnar formation that can satisfactorily hold a constant distance between the substrate and the counter substrate when the electronic element is formed. And a liquid crystal lens using the same.

  In recent years, electronic devices constructed by stacking a plurality of substrates for electronic devices have been improved in functionality or have improved functionality by increasing the distance between substrates compared to conventional electronic devices. Things have been developed in various fields.

For example, in the field of display devices, liquid crystal lenses are being developed as the above-described electronic elements (for example, Patent Documents 1 to 3). The liquid crystal lens is used for three-dimensional display in a display device, and more specifically, used for a naked-eye three-dimensional display method. The liquid crystal lens has a substrate having two electrodes and a liquid crystal layer formed between the two substrates, and changes the orientation of the liquid crystal in the liquid crystal layer by applying a voltage between the electrodes. With this, the lens effect can be expressed. In the liquid crystal lens, in order to ensure the lens thickness, the distance (cell gap) between the two substrates is required to be within a range of 30 μm to 110 μm.
Also, in the field of semiconductors and printed circuit boards, in order to prevent damage to the semiconductor layer and conductive layer formed on the substrate, a configuration in which a plurality of substrates are arranged in an overlapping manner is used. It is necessary to provide a sufficient distance.

Here, in an electronic device having a plurality of substrates for electronic devices, a method of forming a columnar formed product that is a columnar resin layer on a substrate is used as a method of maintaining a predetermined distance between the substrates. Yes. A photolithography method is preferably used as a method for forming the columnar formed product. In the photolithography method, exposure light is usually irradiated from the surface side of the coating film of the resin composition formed on the substrate. For this reason, the curing reaction on the coating film surface is likely to proceed. For this reason, as the columnar formed product, a reverse taper shape in which the area of the upper base is larger than the area of the lower base is easily obtained and is preferably used.
Further, when forming the columnar formed product by photolithography, for example, by using a cut filter that cuts light on the short wavelength side of the exposure light, by suppressing the progress of the curing reaction on the surface of the coating film, It has also been proposed to form a columnar formation having a forward taper shape in which the bottom area is smaller than the bottom area. The forward-tapered columnar shaped article can improve the adhesion of the columnar shaped article to the substrate.

  However, in the case of having the above-described forward tapered shape or reverse tapered shape, there is a problem that plastic deformation of the columnar formed product is likely to occur on the smaller side of the upper and lower bases.

JP 2009-276624 A JP 2006-293241 A JP 2012-173517 A

  The present invention has been made in view of the above circumstances, and when used as an electronic element, the columnar formed article for an electronic device having a columnar formed article that can satisfactorily hold a constant distance between the substrate and the counter substrate. A main object is to provide a substrate with attached substrate, a substrate with columnar formation for liquid crystal lens, and a liquid crystal lens using the same.

  In order to achieve the above object, the present invention includes a substrate, and a columnar formed product that is formed on the substrate and holds a constant distance between the counter substrate and the counter substrate used when the substrate and the electronic device are used. And the columnar shaped product has the same area of the upper base and the area of the lower base, and has a maximum area portion between the upper base and the lower base that maximizes the horizontal sectional area with respect to the substrate. Provided is a substrate with a columnar formed article for an electronic device, characterized by having a shape.

  According to the present invention, the columnar formed article has the same area of the upper base and the area of the lower base, and the maximum area where the horizontal sectional area with respect to the substrate is maximum between the upper base and the lower base. By having a shape having a portion, it is possible to suppress plastic deformation of the columnar formed product, and in the case of an electronic element, a columnar shape that can favorably hold a constant distance between the substrate and the counter substrate It can be set as the board | substrate with a columnar formation which has a formation.

In the said invention, it is preferable that the height of the said columnar formation is 30 micrometers or more, and the said cross-sectional area of the said largest area part is 3000 micrometers ² or less. This is because when the substrate with a columnar product of the present invention is applied to a liquid crystal lens, the substrate and the counter substrate can be favorably held at a certain distance.

  The present invention includes a substrate and a columnar formation that is formed on the substrate and that holds the substrate and a counter substrate used when the liquid crystal lens is formed at a constant distance. The area of the upper base is the same as the area of the lower base, and has a shape having a maximum area portion in which the horizontal cross-sectional area with respect to the substrate is maximum between the upper base and the lower base. Provided is a substrate with a columnar formation for a liquid crystal lens.

  According to the present invention, the columnar formed article has the same area of the upper base and the area of the lower base, and the maximum area where the horizontal sectional area with respect to the substrate is maximum between the upper base and the lower base. The shape having a portion can suppress plastic deformation of the columnar formed product, and can be favorably held at a certain distance between the substrate and the counter substrate when a liquid crystal lens is formed. It can be set as the board | substrate with a columnar formation for liquid crystal lenses which has a formation.

  The present invention includes a substrate, a counter substrate, a liquid crystal layer formed between the substrate and the counter substrate, and a columnar shape that is formed on the substrate and holds the substrate and the counter substrate at a constant distance. A liquid crystal lens formed between the substrate and the counter substrate and sealing the liquid crystal layer, wherein the columnar formation has an area of an upper base and an area of a lower base And a shape having a maximum area portion in which a horizontal sectional area with respect to the substrate is maximized between the upper base and the lower base.

  According to the present invention, by having the above-described columnar formation, a liquid crystal lens in which the distance between the substrate and the counter substrate is favorably held at a constant distance can be obtained.

  The substrate with a columnar article for electronic devices according to the present invention has the above-described columnar article, so that when it is used as an electronic device, the substrate and the counter substrate can be favorably held at a certain distance. Play.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing which shows an example of the board | substrate with a columnar formation for electronic devices of this invention (substrate with a columnar formation for liquid crystal lenses) and the columnar formation in this invention. It is a schematic perspective view which shows an example of the columnar formation in this invention. It is a schematic sectional drawing which shows an example of the liquid crystal lens of this invention. It is explanatory drawing explaining the columnar formation in this invention. It is a schematic sectional drawing which shows the other example of the board | substrate with a columnar formation for liquid crystal lenses of this invention. It is a schematic sectional drawing which shows the other example of the board | substrate with a columnar formation for liquid crystal lenses of this invention. It is a schematic sectional drawing which shows the other example of the board | substrate with a columnar formation for liquid crystal lenses of this invention. It is explanatory drawing explaining the columnar formation in the past. It is explanatory drawing explaining the columnar formation in the past.

  Hereinafter, the substrate with columnar formation for electronic elements, the substrate with columnar formation for liquid crystal lens, and the liquid crystal lens of the present invention will be described.

A. The board | substrate with a columnar product for electronic devices of this invention The board | substrate with a columnar product for electronic devices of this invention (it may be hereafter called a board | substrate with a columnar product) is formed on a board | substrate and the said board | substrate, A columnar formation that holds a constant distance between the substrate and the counter substrate used when the electronic device is used, and the columnar formation has the same area of the upper base and the area of the lower base, A shape having a maximum area portion in which a horizontal cross-sectional area with respect to the substrate is maximized between the upper base and the lower base.

In the present invention, the “upper bottom of the columnar formed product” refers to a surface of the columnar formed product on the side opposite to the substrate side. The “bottom bottom of the columnar formed product” refers to the surface of the columnar formed product on the substrate side.
In the present invention, at least one of “upper bottom” and “lower bottom” may be referred to as a bottom surface.

The board | substrate with a columnar formation of this invention is demonstrated using figures.
FIG. 1A is a schematic cross-sectional view showing an example of a substrate with a columnar product of the present invention, FIG. 1B is an enlarged view of the columnar product of FIG. 1A, and FIG. These are the figure of the part shown by the AA line of FIG.1 (b), the figure of the part shown by the BB line, and the figure of the part shown by the CC line. FIG. 2 is a schematic perspective view showing an example of a columnar product in the present invention.
As shown in FIGS. 1 (a) to 1 (c), a substrate 1 with a columnar product according to the present invention includes a substrate 2, a counter substrate formed on the substrate 2, and used as the substrate 2 and an electronic element. And columnar formations 3 that maintain a certain distance therebetween. As shown in FIGS. 1B, 1C, and 2, the columnar formed product 3 in the present invention has the same area of the upper base 3a and the area of the lower base 3b, and the upper base 3a and the lower base 3b. It is the shape which has the largest area part 3c in which the cross-sectional area of the horizontal direction with respect to the board | substrate 2 becomes the largest in between.
1A, 1B, and 2 show an example in which the substrate 1 with a columnar product is a substrate with a columnar product for a liquid crystal lens used in a liquid crystal lens. An example in which the entire transparent electrode layer 4 is formed and the columnar formed product 3 is formed on the entire transparent electrode layer 4 is shown.

The board | substrate with a columnar formation thing for electronic devices of this invention is used for an electronic device. An electronic device using the substrate with a columnar article for electronic device of the present invention will be described with reference to the drawings.
FIG. 3 is a schematic cross-sectional view showing an example of an electronic element using the substrate with a columnar product of the present invention, and shows an example in which the electronic element is a liquid crystal lens. The liquid crystal lens 30 is formed on the substrate 2, the counter substrate 12, the liquid crystal layer 20 formed between the substrate 2 and the counter substrate 12, and a certain distance between the substrate 2 and the counter substrate 12. And a sealing layer 21 that is formed between the substrate 2 and the counter substrate 12 and seals the liquid crystal layer 20. Further, FIG. 3 shows an example in which the entire transparent electrode layer 4 is formed on the substrate 2 and the long transparent electrode layers 14 are arranged in a stripe pattern on the counter substrate 12. .

  According to the present invention, the columnar formed article has the same area of the upper base and the area of the lower base, and the maximum area where the horizontal sectional area with respect to the substrate is maximum between the upper base and the lower base. By having a shape having a portion, it is possible to suppress plastic deformation of the columnar formed product, and in the case of an electronic element, a columnar shape that can favorably hold a constant distance between the substrate and the counter substrate It can be set as the board | substrate with a columnar formation which has a formation.

Although this reason is not necessarily clear, it is guessed as follows.
Here, as for the columnar formation conventionally used for electronic devices such as display panels, those having the above-described forward tapered shape or reverse tapered shape are usually used. When a columnar product-attached substrate having such a columnar product is laminated with a counter substrate to form an electronic device, for example, force due to the weight of the counter substrate is applied to the columnar product. In addition, when the substrate with columnar formation and the counter substrate are bonded together, a force may be applied to the columnar formation by pressing the substrate and the counter substrate from the outside.
When the columnar formation has the above-mentioned forward tapered shape or reverse tapered shape, the force per unit area applied to the bottom surface having a small area, that is, the pressure is increased, so that plastic deformation is likely to occur on the bottom surface side having a small area. It is inferred that
On the other hand, in the present invention, since the upper base area and the lower base area have the same shape, it is assumed that the pressure applied to the upper base and the lower base of the columnar formed product can be made equal. Is done. Therefore, it is presumed that the columnar formed product in the present invention can suppress plastic deformation due to the difference in the area of the bottom surface described above.

More specifically, as shown in FIG. 8A, when an electronic element is formed by laminating a columnar product-attached substrate 1 ′ having a columnar product 3 ′ having a reverse taper shape and a counter substrate 12, a columnar shape is obtained. Since the area of the lower base of the formed product 3 ′ is smaller than the area of the upper base, the pressure T2 applied to the lower base of the columnar formed product 3 ′ is larger than the pressure T1 applied to the upper base. As shown in FIG. 3, it is assumed that plastic deformation is likely to occur on the lower bottom side of the columnar formed product 3 ′.
On the other hand, as shown in FIG. 4 (a), when the columnar product-attached substrate 1 of the present invention and the counter substrate 12 are laminated to form an electronic device, the columnar product 3 of the present invention has an upper bottom. Since the area and the area of the lower base have the same shape, it is assumed that the pressure T3 applied to the upper base of the columnar shaped product 3 and the pressure T4 applied to the lower base can be made equal. Therefore, it is presumed that the columnar product 3 in the present invention can suppress plastic deformation due to the difference in the area of the bottom surface.
4 (a) and 4 (b) are explanatory views for explaining the columnar formation in the present invention, and FIGS. 8 (a) and 8 (b) are explanatory views for explaining the conventional columnar formation. FIGS. 4A and 4B and FIGS. 8A and 8B show examples in which the electronic element is a liquid crystal lens.

In addition, as the shape of the columnar formed product, as the shape in which the width of the upper base and the width of the lower base are equal, for example, a shape having a constant horizontal cross-sectional area with respect to a substrate such as a prism or cylinder may be considered. It is presumed that the columnar formed product in the present invention can suppress plastic deformation even compared to the above-described columnar formed product such as a cylinder.
That is, when the columnar formation has a shape such as a cylinder, the direction in which the columnar formation is deformed is not determined by the pressure applied to the columnar formation when an electronic device is formed. For example, a force is locally applied to the columnar formation. It is presumed that stress concentration occurs due to the application and plastic deformation occurs.
On the other hand, in the present invention, the columnar formed product is deformed in the direction of the maximum area portion between the upper base and the lower base because it has the maximum area portion in which the horizontal sectional area with respect to the substrate is maximum. Therefore, when pressure is applied to the columnar formation when it is used as an electronic device, the columnar formation is presumed to be elastically deformed, and local stress concentration is suppressed from occurring in the columnar formation. It is speculated that you can.

More specifically, as shown in FIG. 9A, an electronic device is formed by stacking a columnar product-attached substrate 1 ″ having a columnar product 3 ″ having a shape such as a cylinder and a counter substrate 12. Since the deformation direction is not determined by the columnar formation 3 "applied pressure T3, T4, stress is concentrated by locally applying a force to the columnar formation 3", as shown in FIG. 9B. It is assumed that the plastic deformation of the formed product 3 ″ occurs. FIG. 9B shows an example in which the columnar formed product 3 ″ is buckled.
On the other hand, as shown in FIG. 4A, in the present invention, since the columnar product 3 has the maximum area portion, the columnar product is deformed in the direction x of the maximum area portion by the pressures T3 and T4. As shown in FIG. 4B, it is assumed that the elastic deformation is likely to occur. Therefore, it is presumed that the columnar product 3 in the present invention can suppress plastic deformation due to stress concentration.
FIGS. 9A and 9B are explanatory views for explaining a conventional substrate with a columnar product. 9A and 9B show examples in which the electronic element is a liquid crystal lens.

  For the above-described problem, for example, it is conceivable to make the entire columnar product thick. However, in the electronic device, the columnar formation is usually formed so as not to hinder the function of the electronic device itself or the function of other components formed on the substrate, and therefore the formation area of the columnar formation on the substrate. Is limited, and it is difficult to sufficiently solve the above problems.

  Hereinafter, the details of the substrate with columnar products according to the present invention will be described.

1. Columnar formation The columnar formation in the present invention is formed on a substrate, and is held at a constant distance between the substrate and the counter substrate used in the electronic device.

(1) Shape of columnar formation The columnar formation according to the present invention has the same area of the upper base and the area of the lower base, and the horizontal cross-sectional area with respect to the substrate is maximum between the upper base and the lower base. It is the shape which has the largest area part which becomes.

In the present invention, “the area of the upper base and the area of the lower base are equal” means that the absolute value of the difference between the area of the upper base and the area of the lower base is the difference in the area of the bottom surface of the columnar formation. It is said that it is a grade which can suppress the plastic deformation which arises by. Specifically, the absolute value of the difference between the area of the upper base and the area of the lower base is the diameter of the upper base and the lower base when assuming that the plan view shape of the upper base and the lower base is circular. The absolute value of the difference from the diameter is 5 μm or less.
In the present invention, the absolute value of the difference between the diameter of the upper base and the diameter of the lower base is preferably 4 μm or less, and particularly preferably 3 μm or less.
This is because, as the absolute value of the difference between the diameter of the upper base and the diameter of the lower base is smaller, the plastic deformation caused by the difference in the area of the bottom surface can be suppressed.

Moreover, the shape of the columnar shaped product in the present invention is a shape having a maximum area portion where the horizontal sectional area with respect to the substrate is maximum between the upper bottom and the lower bottom.
The difference between the cross-sectional area of the maximum area part and the area of the bottom surface having the larger area among the upper and lower bases is appropriately determined according to the use of the electronic element. The difference between the diameter of the maximum area part and the larger diameter of the upper and lower bases when the plan view shape of the bottom and maximum area part is circular is 2 μm or more.
In the present invention, the difference between the diameter of the large area part and the larger diameter of the upper and lower bases is preferably in the range of 2 μm to 10 μm, particularly in the range of 2 μm to 8 μm. Is preferred.
This is because if the difference from the diameter is small, it may be difficult to sufficiently suppress the plastic deformation of the columnar formed product. In addition, if the difference in diameter is large, it may be difficult to form a columnar formed product, or the columnar formed product itself may be increased, which may hinder the function of the electronic device.

The area of the area and the lower base of the upper base of the columnar formations, can be appropriately selected depending on the use of electronic devices, but are not limited to, in the range of 150μm ² ~2850μm ^2, among others 250μm ² ~2300μm within ² range, particularly preferably in the range of 300μm ² ~2000μm ^2.
This is because if the area of the upper base and the lower base of the columnar formation is too large, the columnar formation itself may become large and hinder the function of the electronic device. This is because if the bottom area is too small, it may be difficult to form a columnar formed product.

As the cross-sectional area of the maximum area of the columnar formations, it can be appropriately selected depending on the use of electronic devices, but are not limited to, 3000 .mu.m ² or less, in the range inter alia of 255μm ² ~2400μm ^2, especially 350μm It is preferably in the range of ^{2 to} 2100 μm ² .
This is because if the cross-sectional area of the maximum area portion of the columnar formation is too large, the columnar formation itself may become large and hinder the function of the electronic device. If it is too small, it may be difficult to form a columnar formed product.

The height of the columnar formed material can be appropriately selected according to the use of the electronic device, and is not particularly limited, but is 30 μm or more, particularly in the range of 35 μm to 110 μm, particularly in the range of 37 μm to 100 μm. Is preferred.
This is because if the height of the columnar formed product is too low or too high, it may be difficult to form the columnar formed product in a predetermined shape.

Further, the maximum area portion of the columnar formed product is provided between the upper base and the lower base. The formation position (height) of the maximum area portion in the columnar formation is usually in the range of 25% to 75%, particularly in the range of 30% to 70% with respect to the height of the columnar formation. In particular, the range of 35% to 65% is preferable.
If the ratio of the formation area of the maximum area part to the height of the columnar formation is too large or too small, the columnar formation may easily be plastically deformed on the bottom side located far from the maximum area part. Because there is.

  The shape of the columnar formed product in plan view can be appropriately selected depending on the electronic element and is not particularly limited, and examples thereof include a circular shape, an elliptical shape, a square shape, and a rectangular shape.

  Regarding the above-described upper base, lower base, each area of the maximum area portion, the height of the columnar formation, and the formation position of the maximum area portion, for example, the columnar formation is viewed in plan using a scanning electron microscope (SEM). It can obtain | require by measuring the observation image observed from and the observation image which observed the columnar formation from the side surface. A known scanning electron microscope (SEM) can be used.

In the present invention, “the area of the upper base” means that the substrate in the uppermost portion of the columnar formation and the horizontal surface intersect with a surface obtained by extending the side surface on the upper base side from the maximum area of the columnar formation. The area of the figure to be formed. “Area of the upper base” means, for example, the area of the figure indicated by A in FIG.
The “lower bottom area” is the area of a figure formed by intersecting the surface of the substrate on which the columnar formation is formed and the surface obtained by extending the side surface on the lower bottom side from the maximum area of the columnar formation. Say. When the columnar product is formed on the substrate via another layer, the “lower bottom area” means the surface of the other layer and the side surface on the lower bottom side of the maximum area of the columnar product. The area of a figure formed by intersecting with the extended surface. “The area of the lower base” refers to the area of the figure indicated by B in FIG.
The “horizontal cross-sectional area with respect to the substrate having the largest area” refers to the maximum value of the horizontal cross-sectional area with respect to the substrate of the columnar formed product. The “horizontal cross-sectional area with respect to the substrate having the largest area” refers to, for example, the area of the figure indicated by C in FIG.
Further, the height of the columnar formed product refers to a vertical distance from the upper base to the lower base, and specifically, the height of the columnar formed product refers to a distance indicated by x1 in FIG.
The formation position of the maximum area portion refers to a distance in the vertical direction from the maximum area portion to the lower base, and specifically, the formation position of the maximum area portion refers to a distance indicated by x2 in FIG.

In the columnar formed product according to the present invention, the above-described upper base, lower bottom, each area of the maximum area portion, the height of the columnar formed product, and the like can be adjusted according to the use of the substrate with the columnar formed product. In the present invention, the height of the columnar formed product is preferably 30 μm or more, and the cross-sectional area of the maximum area portion is preferably 3000 μm ² or less. This is because when the substrate with a columnar product of the present invention is applied to a liquid crystal lens, the substrate and the counter substrate can be favorably held at a certain distance.

(2) Columnar formation material and formation method (a) Columnar formation material The columnar formation material in the present invention is not particularly limited as long as the columnar formation having the above-described shape can be formed. Moreover, as a material of columnar formation, it may have transparency and does not need to have transparency, but it is preferable to have transparency. As the material for the columnar formed product, a resin composition is usually used. In the present invention, it is preferable to use the following transparent resin composition. Hereinafter, the transparent resin composition will be described.

  The transparent resin composition suitably used in the present invention contains a monomer, a polymer, and a photopolymerization initiator.

(I) Photopolymerization initiator The photopolymerization initiator used in the present invention is, for example, a compound that generates free radicals by the energy of ultraviolet rays, and includes an oxime ester compound, an acetophenone compound, a benzophenone compound, and biimidazole. Compounds, benzoin compounds, α-diketone compounds, polynuclear quinone compounds, xanthone compounds, thioxanthone compounds, triazine compounds, ketal compounds, azo compounds, peroxides, 2,3-dialkyldione compounds , Disulfide compounds, thiuram compounds, fluoroamine compounds, and the like. These can be used alone or in combination.

  Specific examples of the photopolymerization initiator include benzophenone, Michler's ketone (4,4′-bisdimethylaminobenzophenone), 4,4′-bisdiethylaminobenzophenone, 4-methoxy-4′-dimethylaminobenzophenone, and 2-ethylanthraquinone. , Aromatic ketones such as phenanthrene, benzoin ethers such as benzoin methyl ether, benzoin ethyl ether and benzoin phenyl ether, benzoin such as methyl benzoin and ethyl benzoin, 2- (o-chlorophenyl) -4,5-phenylimidazole 2- (o-chlorophenyl) -4,5-di (m-methoxyphenyl) imidazole dimer, 2- (o-fluorophenyl) -4,5-diphenylimidazole dimer, 2- (o- Methoxyphenyl) -4, -Diphenylimidazole dimer, 2,4,5-triarylimidazole dimer, 2- (o-chlorophenyl) -4,5-di (m-methylphenyl) imidazole dimer, 2-benzyl-2- Dimethylamino-1- (4-morpholinophenyl) -butanone, 2-trichloromethyl-5-styryl-1,3,4-oxadiazole, 2-trichloromethyl-5- (p-cyanostyryl) -1, Halomethylthiazole compounds such as 3,4-oxadiazole, 2-trichloromethyl-5- (p-methoxystyryl) -1,3,4-oxadiazole, 2,4-bis (trichloromethyl) -6- p-methoxystyryl-S-triazine, 2,4-bis (trichloromethyl) -6- (1-p-dimethylaminophenyl-1,3-butadienyl)- -Triazine, 2-trichloromethyl-4-amino-6-p-methoxystyryl-S-triazine, 2- (naphth-1-yl) -4,6-bis-trichloromethyl-S-triazine, 2- (4 -Ethoxy-naphth-1-yl) -4,6-bis-trichloromethyl-S-triazine, 2- (4-butoxy-naphth-1-yl) -4,6-bis-trichloromethyl-S-triazine, etc. Halomethyl-S-triazine compounds, 2,2-dimethoxy-1,2-diphenylethane-1-one, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropanone, 1,2 -Benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1,1-hydroxy-cyclohexyl-phenyl ketone, benzyl, benzoyl Benzoic acid, methyl benzoylbenzoate, 4-benzoyl-4′-methyldiphenyl sulfide, benzylmethyl ketal, dimethylaminobenzoate, isoamyl P-dimethylaminobenzoate, 2-n-butoxyethyl-4-dimethylaminobenzoate, 2- Examples include photopolymerization initiators such as chlorothioxanthone, 2,4 diethylthioxanthone, 2,4 dimethylthioxanthone, and isopropylthioxanthone.

  As a brand name of a photoinitiator, Irgacure 369 (made by Ciba Specialty Chemicals), Irgacure OXE02 (made by Ciba Specialty Chemicals), NCI831 (made by Adeka) etc. are mentioned. In this invention, these photoinitiators can be used individually or in mixture of 2 or more types.

The content of the photopolymerization initiator is not particularly limited as long as a columnar formed product can be formed, but specifically, 0.5% by mass to 5.0% by mass with respect to the solid component of the transparent resin composition. %, In particular, 1.0% to 4.0% by weight, particularly 1.5% to 3.0% by weight.
If the amount of the photopolymerization initiator is too small, the coating may be insufficiently cured, and if the amount of the photopolymerization initiator is too large, the sensitivity near the surface of the coating will increase, resulting in a columnar formation larger than the predetermined size. This is because there is a possibility of becoming.
In addition, in this invention, the "solid component of a transparent resin composition" means the component of the transparent resin composition except the solvent, when the transparent resin composition contains the solvent mentioned later.

(Ii) Monomer Examples of the monomer used in the present invention include allyl acrylate, benzyl acrylate, butoxyethyl acrylate, butoxyethylene glycol acrylate, cyclohexyl acrylate, dicyclopentanyl acrylate, 2-ethylhexyl acrylate, glycerol acrylate, glycidyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, isobornyl acrylate, isodexyl acrylate, isooctyl acrylate, lauryl acrylate, 2-methoxyethyl acrylate, methoxyethylene glycol acrylate, phenoxyethyl acrylate, stearyl acrylate, ethylene glycol di Acrylate, diethylene glycol diacryl 1,4-butanediol diacrylate, 1,5-pentanediol diacrylate, 1,6-hexanediol diacrylate, 1,3-propanediol acrylate, 1,4-cyclohexanediol diacrylate, 2,2- Dimethylolpropane diacrylate, glycerol diacrylate, tripropylene glycol diacrylate, glycerol triacrylate, trimethylolpropane triacrylate, polyoxyethylated trimethylolpropane triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, triethylene glycol diacrylate Acrylate, polyoxypropyltrimethylolpropane triacrylate, butylene glycol diacrylate, 1,2, -Butanetriol triacrylate, 2,2,4-trimethyl-1,3-pentanediol diacrylate, diallyl fumarate, 1,10-decanediol dimethyl acrylate, dipentaerythritol hexaacrylate, dipentaerythritol pentaacrylate, and Those obtained by replacing the above acrylate groups with methacrylate groups, γ-methacryloxypropyltrimethoxysilane, 1-vinyl-2-pyrrolidone, 2-hydroxyethylacryloyl phosphate, tetrahydrofurfuryl acrylate, dicyclopentenyl acrylate, dicyclopentenyl Oxyethyl acrylate, 3-butanediol diacrylate, neopentyl glycol diacrylate, polyethylene glycol diacrylate, hydroxy Pivalic acid ester neopentyl glycol diacrylate, phenol-ethylene oxide modified acrylate, phenol-propylene oxide modified acrylate, N-vinyl-2-pyrrolidone, bisphenol A-ethylene oxide modified diacrylate, pentaerythritol diacrylate monostearate, tetraethylene Glycol diacrylate, polypropylene glycol diacrylate, trimethylolpropane propylene oxide modified triacrylate, isocyanuric acid ethylene oxide modified triacrylate, trimethylolpropane ethylene oxide modified triacrylate, pentaerythritol pentaacrylate, pentaerythritol hexaacrylate, pentaerythritol tetra Accel Relay Acrylate monomers such as those having these acrylate groups substituted with methacrylate groups, urethane acrylate oligomers in which an acrylate group is bonded to an oligomer having a polyurethane structure, and polyester acrylate oligomers in which an acrylate group is bonded to an oligomer having a polyester structure , Epoxy acrylate oligomer in which acrylate group is bonded to oligomer having epoxy group, urethane methacrylate oligomer in which methacrylate group is bonded to oligomer having polyurethane structure, polyester methacrylate oligomer in which methacrylate group is bonded to oligomer having polyester structure, epoxy An epoxy methacrylate oligomer in which a methacrylate group is bonded to an oligomer having a group; Polyurethane acrylates having Relate group, polyester acrylates having an acrylate group, an epoxy acrylate resin having an acrylate group, a polyurethane methacrylate having a methacrylate group, an epoxy methacrylate resins having a polyester methacrylate, and methacrylate groups having methacrylate group. These monomers may be used alone or in combination of two or more. In the present invention, commercially available monomers can also be used. For example, SR399 (manufactured by Sartomer Co., Ltd.), Aronix M-400 (manufactured by Toagosei Co., Ltd.), and Aronix M-450 (manufactured by Toagosei Co., Ltd.) ) Is preferred.

  The content of the monomer is not particularly limited as long as a predetermined columnar formed product can be formed, and specifically, in the range of 60% by mass to 95% by mass with respect to the solid component of the transparent resin composition, Especially, it is preferable to exist in the range of 65 mass%-93 mass%, especially in the range of 70 mass%-90 mass%.

(Iii) Polymer As the polymer used in the present invention, for example, ethylene-vinyl acetate copolymer, ethylene-vinyl chloride copolymer, ethylene vinyl copolymer, polystyrene, acrylonitrile-styrene copolymer, ABS resin, poly Methacrylic acid resin, ethylene methacrylic acid resin, polyvinyl chloride resin, chlorinated vinyl chloride, polyvinyl alcohol, cellulose acetate propionate, cellulose acetate butyrate, nylon 6, nylon 66, nylon 12, polyethylene terephthalate, polybutylene terephthalate, polycarbonate , Polyvinyl acetal, polyether ether ketone, polyether sulfone, polyphenylene sulfide, polyarylate, polyvinyl butyral, epoxy resin, phenoxy resin , Polyimide resin, polyamideimide resin, polyamic acid resin, polyetherimide resin, phenol resin, urea resin, etc., and polymerizable monomers methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n -Propyl methacrylate, isopropyl acrylate, isopropyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, n-pentyl acrylate, n-pentyl methacrylate, n-hexyl acrylate , N-hexyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl Tacrylate, n-octyl acrylate, n-octyl methacrylate, n-decyl acrylate, n-decyl methacrylate, 2-hydroxyethyl methacrylate, benzyl methacrylate, styrene, α-methylstyrene, N-vinyl-2-pyrrolidone, glycidyl (meth) A polymer comprising one or more of acrylate and one or more of acrylic acid, methacrylic acid, dimer of acrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, vinyl acetic acid, and acid anhydrides thereof, or A copolymer etc. are mentioned. These polymers may be used alone or in combination of two or more. In the present invention, commercially available polymers can also be used. For example, Epicoat 180S70 (manufactured by Yuka Shell Epoxy Co., Ltd.), Aronix M-5600 (manufactured by Toagosei Co., Ltd.), Aronix M-6200 (Toagosei Co., Ltd.) Alonix M-7100 (manufactured by Toagosei Co., Ltd.) and Aronix M-9050 (manufactured by Toagosei Co., Ltd.) are preferred.

  The content of the polymer is not particularly limited as long as a columnar formed product can be formed. Specifically, the polymer content is in the range of 5% by mass to 40% by mass with respect to the solid component of the transparent resin composition, among others. It is preferable to be in the range of 7% by mass to 35% by mass, particularly in the range of 10% by mass to 30% by mass.

(Iv) Solvent The transparent resin composition usually further contains a solvent. The solvent can be the same as that used in general resin compositions, specifically, alcohols such as methanol, ethanol, n-propanol, isopropanol, ethylene glycol, propylene glycol, α- or Terpenes such as β-terpineol, etc., ketones such as acetone, methyl ethyl ketone, cyclohexanone, N-methyl-2-pyrrolidone, aromatic hydrocarbons such as toluene, xylene, tetramethylbenzene, cellosolve, methyl cellosolve, ethyl cellosolve, Carbitol, methyl carbitol, ethyl carbitol, butyl carbitol, propylene glycol monomethyl ether, propylene glycol monoethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol Glycol ethers such as no ethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, ethyl acetate, butyl acetate, cellosolve acetate, ethyl cellosolve acetate, butyl cellosolve acetate, carbitol acetate, ethyl carbitol acetate, butyl carbitol Examples thereof include acetates such as acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, and 3-methoxybutyl acetate.

(V) Additive In addition to the above-described photopolymerization initiator, monomer, polymer, and solvent, the transparent resin composition can be added by appropriately selecting necessary additives.
Examples of the additive include a leveling agent, a crosslinking agent, a curing agent, a polymerization accelerator, and a viscosity modifier. Known additives can be used for these additives.

(Vi) Transparent resin composition The ratio of the mass of the monomer and the mass of the polymer contained in the transparent resin composition is not particularly limited as long as a desired columnar formed product can be formed. The mass of the polymer is preferably in the range of 70:30 to 90:10, more preferably in the range of 73:27 to 87:13, and particularly preferably in the range of 75:25 to 85:15.
This is because if the mass ratio of the monomer is too small or too large than the above ratio, it may be difficult to form the columnar product itself.

About solid content concentration and viscosity of a transparent resin composition, it can select suitably according to the coating method of the transparent resin composition to a board | substrate at the time of forming a columnar formation.
In addition, "solid content concentration of a transparent resin composition" means the ratio of the mass of the solid component with respect to the mass of the transparent resin composition containing a solvent, when a transparent resin composition contains the above-mentioned solvent.

(B) Method for Forming Columnar Formation The method for forming the columnar formation in the present invention is not particularly limited as long as a predetermined columnar formation can be formed. As a method for forming a columnar formed product, for example, a method of forming a columnar formed product by applying the transparent resin composition described above on a substrate to form a coating film, exposing the coating film, and developing the coated film. Can be mentioned.

The coating method of the transparent resin composition can be a general coating method, for example, spin coating method, die coating method, spray coating method, dip coating method, roll coating method, bead coating method, bar coating method, for example. Etc.
Moreover, you may perform a drying process as needed after formation of a coating film.

The exposure light used for exposure is not particularly limited as long as the reaction wavelength of the above-described photopolymerization initiator is included. The exposure light can be irradiated using a light source in a known exposure apparatus.
The exposure method can be the same as that used in general photolithography, and specifically, a method of irradiating the coating film with exposure light through a photomask using a known exposure apparatus. Can be mentioned. The photomask is not particularly limited as long as a columnar formed product can be formed, and can be the same as a general photomask.

The developing solution for the coating film is not particularly limited as long as the coating film can be developed in a predetermined pattern, and examples thereof include water and an aqueous alkaline solution (KOH or K ₂ CO ₃ ).
Moreover, you may perform the baking process which bakes a columnar formation after image development as needed. The baking treatment can be the same as the method used in the general method for forming a resin layer, and thus description thereof is omitted here.

In the present invention, the columnar formed product may be formed of two layers. In the case where the columnar formed product is formed in two layers, for example, the following method may be mentioned. First, a transparent resin composition is applied on a substrate at a thickness corresponding to about half the height of a predetermined columnar formed product to form a coating film, and exposure and development conditions are adjusted to adjust the vertical direction relative to the substrate. The columnar product formation layer is formed so that the cross-sectional shape is an inversely tapered shape. Next, on the surface of the substrate on which the columnar formation layer is formed, the transparent resin composition is applied again at a thickness corresponding to the height of the columnar formation to form a coating film, and exposure conditions and development By adjusting the conditions, the second columnar formation layer is formed on the normal formation layer so that the cross-sectional shape in the direction perpendicular to the substrate becomes a forward tapered shape.
In addition, for the above-described columnar formation, for example, the above-described columnar formation formation layer is formed on a substrate, and the above-described second columnar formation formation layer is formed on the counter substrate used when an electronic device is formed. It can also be formed by bonding the substrate and the counter substrate.

(3) Others The columnar product in the present invention is used to hold a constant distance between the substrate and the counter substrate when the substrate with columnar product of the present invention is an electronic device.
The columnar product can be appropriately selected according to various electronic elements. For example, a columnar product for a liquid crystal lens for holding a cell gap when a liquid crystal lens is used, or a substrate when a printer wiring board is used. A member for maintaining a constant distance between them, a member for maintaining a constant distance between the substrates in a semiconductor laminated substrate, a member for forming a micro-channel in an inkjet printer, and a plasma display And a cathode separator when an organic electroluminescence element is used.
As the columnar formation, a columnar formation for a liquid crystal lens is particularly preferable.

2. Substrate The substrate in the present invention supports a columnar formed product.
As a board | substrate used for this invention, it can select suitably according to the use of an electronic element, and it does not specifically limit. Moreover, as said board | substrate, it may have transparency and does not need to have transparency.

  When the said board | substrate has transparency, it does not specifically limit about the transparency of a board | substrate, For example, it is preferable that a total light transmittance is 80% or more, and it is more preferable that it is 90% or more. Here, the total light transmittance of the substrate can be measured according to JIS K7361-1 (a test method for the total light transmittance of a plastic-transparent material).

  As the substrate, for example, an inflexible rigid material such as quartz glass, Pyrex (registered trademark) glass, or synthetic quartz plate, or a flexible material such as a resin film or an optical resin plate is used. be able to.

  Although it will not specifically limit as thickness of a board | substrate if a columnar formation can be formed, For example, it is preferable to exist in the range of 0.05 mm-0.85 mm.

  A transparent electrode layer may be formed on one surface of the substrate. The transparent electrode layer will be described in the section “B. Substrate with Columnar Form for Liquid Crystal Lens” described later. In the present invention, the transparent electrode layer may be formed on the substrate before application of the transparent resin composition, or a commercially available substrate on which the transparent electrode layer has been previously formed may be used.

3. Other Configurations The substrate with columnar product according to the present invention is not particularly limited as long as it has the above-described substrate and columnar product, and a necessary configuration can be appropriately selected and added.
About such a structure, it can select suitably according to the electronic device in which a columnar formation is used, and electronic devices, such as a liquid crystal lens, a printer wiring board, a semiconductor laminated substrate, an inkjet printer, a plasma display, and an organic electroluminescent element The well-known structure formed on a board | substrate can be mentioned.

4). Others The method for producing the substrate with columnar formation according to the present invention is not particularly limited as long as each of the above-described structures can be formed on the substrate. In addition, since the formation method of each structure in the board | substrate with a columnar formation thing of this invention was already demonstrated, description here is abbreviate | omitted.

B. Substrate with columnar formation for liquid crystal lens The substrate with columnar formation for liquid crystal lens of the present invention is a fixed distance between the substrate and the counter substrate formed on the substrate and used as the substrate and the liquid crystal lens. And the columnar formation has the same area of the upper base and the area of the lower base, and a horizontal sectional area with respect to the substrate between the upper base and the lower base. Is a shape having a maximum area part where the maximum is.

The substrate with columnar product for liquid crystal lens of the present invention will be described with reference to the drawings.
FIG. 1A is a schematic cross-sectional view showing an example of a columnar product for a liquid crystal lens of the present invention, FIG. 1B is an enlarged view of the columnar product of FIG. 1A, and FIG. ) Are the graphic of the portion indicated by the AA line in FIG. 1B, the graphic of the portion indicated by the BB line, and the graphic of the portion indicated by the CC line. The details of FIGS. 1A to 1C can be the same as the contents described in the above-mentioned section “A. Substrate with columnar formation for electronic elements”, and the description thereof is omitted here. .

  According to the present invention, the columnar formed article has the same area of the upper base and the area of the lower base, and the maximum area where the horizontal sectional area with respect to the substrate is maximum between the upper base and the lower base. The shape having a portion can suppress plastic deformation of the columnar formed product, and can be favorably held at a certain distance between the substrate and the counter substrate when a liquid crystal lens is formed. It can be set as the board | substrate with a columnar formation for liquid crystal lenses which has a formation.

  Hereinafter, the details of the substrate with columnar product for liquid crystal lens of the present invention will be described.

1. Substrate and Columnar Formation The columnar formation in the present invention is formed on the substrate and holds a constant distance between the substrate and the counter substrate used when the liquid crystal lens is formed. The columnar formed product is formed in the display area on the substrate.
In the present invention, the “display region” is a region where a liquid crystal layer is formed when the substrate with a columnar product for liquid crystal lens of the present invention is used for a liquid crystal lens. The “display region” is a region corresponding to a display region for displaying an image in a display device using a liquid crystal lens.
Further, the substrate in the present invention supports the above-mentioned columnar formed product and the like.
The substrate and the columnar formed product in the present invention are usually transparent.
The details of the substrate and the columnar formed product can be the same as those described in the above-mentioned section “A. Substrate with columnar formed product for electronic elements”, and thus the description thereof is omitted here.

2. Other Configurations The substrate with a columnar product for liquid crystal lenses of the present invention is not particularly limited as long as it has the above-described substrate and columnar product, and a necessary configuration can be appropriately selected and added.

(1) Transparent electrode layer As for the board | substrate with a columnar formation for liquid crystal lenses of this invention, a transparent electrode layer is normally formed on a board | substrate. The form of the transparent electrode layer can be appropriately selected according to the use of the liquid crystal lens and is not particularly limited. For example, as shown in FIGS. 1 (a), 1 (b) and FIG. As shown in FIG. 6, a long transparent electrode layer 14 can be mentioned. The long transparent electrode layer 14 is usually formed in a stripe pattern. In the present invention, it is particularly preferable that the transparent electrode layer is an entire transparent electrode layer. This is because the substrate with a columnar product for liquid crystal lenses can be formed with a small number of steps.

When the transparent electrode layer is a full surface transparent electrode layer, the full surface transparent electrode layer 4 may be formed between the substrate 2 and the columnar product 3 as shown in FIGS. As shown in FIG. 5, it may be formed on the substrate 2 and the columnar product 3.
In the present invention, the entire transparent electrode layer is preferably formed between the substrate and the columnar product.

  On the other hand, when the transparent electrode layer is a long transparent electrode layer, the transparent electrode layer is usually formed between the substrate and the columnar formed product. When the long transparent electrode layers are arranged in stripes, the width of the long transparent electrode layers, the pitch width of the stripes, and the like can be the same as those of a known liquid crystal lens. Omitted.

  The transparent conductive material used for the transparent electrode layer can be the same as that used for a general display device, and examples thereof include indium tin oxide (ITO) and indium zinc oxide (IZO). .

  The thickness of the transparent electrode layer is not particularly limited as long as it has predetermined conductivity, and for example, it is preferably in the range of 10 nm to 300 nm.

As a method for forming the transparent electrode layer, a general method can be used, and examples thereof include a vapor deposition method and a sputtering method.
Moreover, when forming a transparent electrode layer in pattern shape, after forming a thin film by a vapor deposition method or sputtering method, the method of patterning by the photolithographic method etc. is used suitably.

(2) Alignment Film The substrate with a columnar product for liquid crystal lenses of the present invention may have an alignment film 5 formed so as to cover the substrate 2 and the columnar product 3 as shown in FIG.

The alignment film can be the same as a general alignment film, and examples thereof include an alignment film subjected to rubbing treatment.
The method for forming the alignment film can be a general method, and the description thereof is omitted here.

(3) Light Shielding Part The substrate with a columnar product for liquid crystal lenses of the present invention may have a light shielding part 6 formed between the substrate 2 and the columnar product 3 as shown in FIG. When the transparent electrode layer is continuously formed, the light shielding portion is formed in a pattern corresponding to the transparent electrode layer formed in a pattern on the counter substrate in the liquid crystal lens. On the other hand, when the transparent electrode layer is formed in a pattern, the light shielding part is usually formed in a pattern corresponding to the transparent electrode layer.

As the light-shielding portion, for example, the same one used for a general display device such as a color filter can be used, which may be one using an inorganic material such as chromium, and contains a light-shielding colorant. It is also possible to use a light shielding resin.
The method for forming the light shielding portion can be a general method, and thus the description thereof is omitted here.

3. Others The substrate with columnar product for liquid crystal lens of the present invention is used for a liquid crystal lens. Details of the liquid crystal lens using the substrate with a columnar product for liquid crystal lens of the present invention will be described in the section “C. Liquid crystal lens” described later.

C. Liquid crystal lens The liquid crystal lens of the present invention is formed on a substrate, a counter substrate, a liquid crystal layer formed between the substrate and the counter substrate, and a fixed gap between the substrate and the counter substrate. A columnar formation that is held at a distance, and a sealing layer that is formed between the substrate and the counter substrate and seals the liquid crystal layer, wherein the columnar formation has an area of an upper base and The area of the lower base is the same, and has a shape having a maximum area portion where the horizontal sectional area with respect to the substrate is maximum between the upper base and the lower base.

The liquid crystal lens of the present invention will be described with reference to the drawings.
FIG. 3 is a schematic sectional view showing an example of the liquid crystal lens of the present invention. The details of FIG. 3 have been described in the above-mentioned section “A. Substrate with columnar formation for electronic elements”, and thus description thereof is omitted here.

  According to the present invention, by having the above-described columnar formation, a liquid crystal lens in which the distance between the substrate and the counter substrate is favorably held at a constant distance can be obtained.

  Hereinafter, the liquid crystal lens of the present invention will be described. In addition, since it can be the same as that of the content described in the above-mentioned "B. Substrate with columnar formation for liquid crystal lens" about the board | substrate, columnar formation, and other structure in a liquid crystal lens, description here. Is omitted.

1. Seal Layer The seal layer in the present invention is formed between the substrate and the counter substrate, and seals the liquid crystal layer. The seal layer is usually formed in a non-display area located outside the display area in the liquid crystal lens.

  As the sealant used for the seal layer, a known sealant used for a liquid crystal display device or the like can be used.

The thickness of the seal layer can be appropriately selected according to the height of the columnar formed product.
In addition, the width of the seal layer can be appropriately selected according to the use of the liquid crystal lens of the present invention.

  The method for forming the seal layer is not particularly limited as long as the seal layer can be formed with a predetermined thickness between the substrate and the counter substrate. For example, one of the substrate and the counter substrate using a dispenser or the like is used as a sealant. It can be formed by coating on the surface and bonding to the other.

2. Liquid Crystal Layer The liquid crystal layer in the present invention is formed between the substrate and the counter substrate. The liquid crystal layer contains a liquid crystal material.

  A known liquid crystal material can be used as the material of the liquid crystal lens. As a specific liquid crystal material, one kind of known liquid crystal compounds such as Schiff base type, azo type, ester type and biphenyl type nematic liquid crystal compounds may be used, or a mixture of two or more types may be used. Also good.

  About the thickness of a liquid-crystal layer, it can select suitably according to the use of a liquid-crystal lens. The specific thickness of the liquid crystal layer can be made equal to the height of the above-described columnar formed product, and thus description thereof is omitted here.

  As a method for forming the liquid crystal layer, a known method can be used. For example, after a seal layer is formed in a non-display area on the substrate, a liquid crystal material is dropped on the display area, and then the substrate and the counter substrate are bonded together in a vacuum, and the seal layer is cured by irradiation with ultraviolet light or the like. Thus, a method of enclosing and forming a liquid crystal material between a substrate and a counter substrate can be exemplified.

3. Counter substrate The counter substrate in the present invention is disposed to face the above-described substrate.
The details of the counter substrate can be the same as the contents of the substrate described in the above-mentioned section “A. Substrate with electronic device columnar formation”, and thus the description thereof is omitted here.

  A transparent electrode layer is usually formed on the counter substrate. The form of the transparent electrode layer formed on the counter substrate is determined according to the transparent electrode layer formed on the substrate. For example, when the entire transparent electrode layer on the substrate is formed, Are formed by arranging long transparent electrode layers in a stripe pattern. In addition, for example, when long transparent electrode layers are formed in a stripe pattern on the substrate, the entire transparent electrode layer on the counter substrate is formed.

An alignment film is usually formed on the counter substrate. In the present invention, a light shielding portion may be formed on the counter substrate as necessary.
The transparent electrode layer, the alignment film, and the light shielding portion can be the same as the contents described in the above-mentioned section “B. Substrate with columnar product for liquid crystal lens”, and thus the description thereof is omitted here.

4). Others The manufacturing method of the liquid crystal lens of the present invention is not particularly limited as long as the liquid crystal lens having the above-described configurations can be manufactured.

The liquid crystal lens of the present invention is used by being installed in front of a display panel of a display device.
Examples of the display panel include a liquid crystal panel, a plasma panel, an organic electroluminescence panel, an inorganic electroluminescence panel, a field emission panel (FED panel), and the like.

  The liquid crystal lens of the present invention exerts a lens effect by applying a predetermined voltage to the above-described entire transparent electrode layer and the long transparent electrode layer arranged in a stripe shape, and the liquid crystal lens from the display panel to the liquid crystal lens. The incident light is transmitted through the lens effect, thereby allowing the observer to observe the display for the right eye and the display for the left eye. In addition, since it can be made to be the same as that of the method described in Unexamined-Japanese-Patent No. 2012-173517 about the method of performing two-dimensional display and three-dimensional display using the liquid crystal lens of this invention, description here is Omitted.

  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.

  Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples.

[Example 1]
1. Production of light shielding part (Preparation of copolymer resin solution)
In a polymerization tank, 63 parts by mass of methyl methacrylate (MMA), 12 parts by mass of acrylic acid (AA), 6 parts by mass of 2-hydroxyethyl methacrylate (HEMA), and 88 parts by mass of diethylene glycol dimethyl ether (DMDG) are charged. After stirring and dissolving, 7 parts by mass of 2,2′-azobis (2-methylbutyronitrile) was added and dissolved uniformly. Then, it stirred at 85 degreeC under nitrogen stream for 2 hours, and also was made to react at 100 degreeC for 1 hour. Further, 7 parts by mass of glycidyl methacrylate (GMA), 0.4 parts by mass of triethylamine, and 0.2 parts by mass of hydroquinone were added to the obtained solution, and the mixture was stirred at 100 ° C. for 5 hours to obtain a copolymer resin solution ( A solid content of 50%) was obtained.

(Preparation of light shielding part forming composition)
The following materials were stirred and mixed at room temperature to prepare a curable resin composition having the following composition.
<Composition of curable resin composition>
-Copolymer resin solution (solid content 50%) ... 16 parts by mass-Dipentaerythritol pentaacrylate (Sartomer SR399)
... 24 parts by mass / orthocresol novolac epoxy resin (Epico Shell Epoxy Co., Ltd. Epicoat 18
0S70) ... 4 parts by mass 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one
... 4 parts by mass, diethylene glycol dimethyl ether ... 52 parts by mass

Next, the following components were mixed and sufficiently dispersed with a sand mill to prepare a black pigment dispersion.
<Composition of black pigment dispersion>
Black pigment (Mitsubishi Chemical Corporation # 2600) 20 parts by mass Polymer dispersion (Bic Chemie Japan, Ltd. Disperbyk 111)
... 16 parts by mass, solvent (diethylene glycol dimethyl ether) ... 64 parts by mass

Thereafter, the following components were mixed sufficiently to obtain a light shielding part forming composition.
<Composition of composition for light shielding part formation>
-Black pigment dispersion liquid: 50 parts by mass-Curable resin composition: 20 parts by mass-Diethylene glycol dimethyl ether: 30 parts by mass

(Formation of light shielding part)
A substrate with ITO glass in which an ITO film was formed on the entire surface of one surface of the glass substrate was prepared.
A composition for forming a light shielding part was applied on an ITO film of a glass substrate with ITO using a spin coater and dried at 100 ° C. for 3 minutes to form a light shielding resin layer. This light-shielding resin layer was exposed to a pattern with a 2.0 kW ultra-high pressure mercury lamp by a proximity aligner with a photomask disposed at a distance of 100 μm from the light-shielding resin layer, and then a 0.05 wt% potassium hydroxide aqueous solution. Developed with. Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 30 minutes to perform heat treatment, and long light-shielding portions were arranged in a stripe shape to form. The film thickness of the obtained light shielding part was 2.1 μm.

2. Preparation of columnar formed product (Preparation of transparent resin composition A)
The transparent resin composition A was obtained by mixing the following compositions.
<Composition of transparent resin composition A>
・ Dipentaerythritol pentaacrylate (Sartomer SR399)
59 parts by mass-The above copolymer resin solution (solid content 50%) 14.5 parts by mass-Irgacure 369 (BASF) 1.5 parts by mass-Diethylene glycol dimethyl ether 25 parts by mass

(Production of substrate with columnar formation)
On the surface of the glass substrate with ITO on which the light-shielding part was formed, the transparent resin composition A described above was applied by spin coating and dried to obtain a coating film having a thickness of 55 μm.
Using a photomask having an aperture diameter shown in Example 1 in Table 1 below, placing the photomask at a distance of 200 μm from the coating surface, and using a 2.0 kW ultrahigh pressure mercury lamp by a proximity aligner Irradiation was performed for 10 seconds (exposure amount: 100 mJ / cm ² ). Subsequently, it was immersed in a 0.05 wt% potassium hydroxide aqueous solution (liquid temperature 23 ° C.) for 1 minute for alkali development to remove only the uncured portion of the coating film. Thereafter, the substrate was subjected to a heat treatment in an atmosphere of 200 ° C. for 30 minutes to form a columnar formed product on the light shielding portion.
A substrate with a columnar product was produced by the above procedure. The obtained columnar shaped product had a shape in which the area of the upper base and the area of the lower base were the same and had the maximum area portion between the upper base and the lower base.
Moreover, the formation position of the said largest area part was in the position of 40% with respect to the height of a columnar formation.

[Example 2]
A columnar article-attached substrate was produced in the same manner as in Example 1 except that a photomask having an opening diameter shown in Example 2 in Table 1 was used. The obtained columnar shaped product had a shape in which the area of the upper base and the area of the lower base were the same and had the maximum area portion between the upper base and the lower base.
Moreover, the formation position of the said largest area part was in the position of 43% with respect to the height of a columnar formation.

[Comparative Example 1]
Implemented except that instead of the transparent resin composition A, a transparent resin composition B in which the following compositions were mixed was used, and a photomask having an opening diameter shown in Comparative Example 1 in Table 1 was used. A substrate with a columnar product was produced in the same manner as in Example 1. The obtained columnar product had an inverted taper shape in which the area of the upper base was larger than the area of the lower base, and the area of the upper base was the maximum area of the cross-sectional area in the horizontal direction with respect to the substrate.
<Composition of transparent resin composition B>
・ Dipentaerythritol pentaacrylate (Sartomer SR399)
59 parts by mass-Copolymer resin solution (solid content 50%) 14.5 parts by mass-Irgacure 907 (BASF) 1.5 parts by mass-Diethylene glycol dimethyl ether 25 parts by mass

[Comparative Example 2]
A substrate with a columnar product was produced by the same method as in Comparative Example 1 except that a photomask having an opening diameter shown in Comparative Example 2 in Table 1 was used. The obtained columnar product had an inverted taper shape in which the area of the upper base was larger than the area of the lower base, and the area of the upper base was the maximum area of the cross-sectional area in the horizontal direction with respect to the substrate.

[Comparative Example 3]
A substrate with a columnar shaped product was formed in the same manner as in Example 1 except that a photomask having an aperture diameter shown in Comparative Example 3 in Table 1 was used and that ultraviolet rays were irradiated using a short wavelength cut filter. Was made. The short wavelength cut filter refers to a filter that blocks light having a wavelength of 330 nm or less among ultraviolet rays irradiated from the ultra high pressure mercury lamp. The obtained columnar shaped product had a forward taper shape in which the area of the upper base was smaller than the area of the lower base, and the area of the lower base was the maximum area of the cross-sectional area in the horizontal direction with respect to the substrate.

[Evaluation]
(Shape of columnar formation)
An observation image obtained by observing the columnar formation from a plan view using a scanning electron microscope (SEM) and an observation image obtained by observing the columnar formation from the side were obtained. From the obtained observation image, the height of the columnar formed product, the diameter of the upper base, the diameter of the lower base, the diameter of the maximum area portion, and the maximum value of the cross-sectional area in the horizontal direction with respect to the substrate (maximum cross-sectional area) were obtained. The results are shown in Table 2.

(Measurement of elastic deformation rate)
The elastic deformation rate was measured under the conditions of a load of 50 mN and a planar indenter size of 100 μm using a Fisher ultrafine hardness measuring machine. The results are shown in Table 2.

  Since the columnar formation can be used without any problem when forming a panel, as long as its elastic deformation rate is 80% or more, the columnar formation of Examples 1 and 2 should exhibit good column characteristics. Was confirmed. On the other hand, it was confirmed that the columnar formed products of Comparative Examples 1 to 3 were difficult to exhibit sufficient column characteristics. The column characteristics are considered to be due to the shape of the columnar formation.

1 ... Substrate with columnar formation for electronic elements (substrate with columnar formation for liquid crystal lens)
2 ... Substrate 3 ... Columnar formation

Claims (4)

A substrate,
A columnar formed product that is formed on the substrate and that holds the substrate and the counter substrate used when the electronic device is formed at a constant distance;
The columnar formation has a shape in which the area of the upper base and the area of the lower base are the same, and a maximum area portion in which a horizontal cross-sectional area with respect to the substrate is maximum is between the upper base and the lower base. A substrate with a columnar formed article for an electronic device. The height of the said columnar formation is 30 micrometers or more, and the said cross-sectional area of the said largest area part is 3000 micrometers ² or less, The board | substrate with a column formation for electronic elements of Claim 1 characterized by the above-mentioned. A substrate,
A columnar formation that is formed on the substrate and holds a constant distance between the substrate and the counter substrate used when the liquid crystal lens is formed;
The columnar formation has a shape in which the area of the upper base and the area of the lower base are the same, and a maximum area portion in which a horizontal cross-sectional area with respect to the substrate is maximum is between the upper base and the lower base. A substrate with a columnar product for a liquid crystal lens. A substrate,
A counter substrate;
A liquid crystal layer formed between the substrate and the counter substrate;
A columnar formation formed on the substrate and holding a constant distance between the substrate and the counter substrate;
A seal layer that is formed between the substrate and the counter substrate and seals the liquid crystal layer;
A liquid crystal lens having
The columnar formation has a shape in which the area of the upper base and the area of the lower base are the same, and a maximum area portion in which a horizontal cross-sectional area with respect to the substrate is maximum is between the upper base and the lower base. A liquid crystal lens characterized by that.

Images