JPH10282309A - Lens sheet with electromagnetic shield function, and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens sheet which having the electromagnetic wave shielding performance by a inexpensive shield material capable of cutting off the electromagnetic wave generated from a plasma display without any working process such as the coating or evaporation on a cover of the image surface by attaching the shield material, and to provide its manufacturing method. SOLUTION: An ionized radioactive ray hardening resin layer 2 is provided on a flat surface of a reticular sheet 1 in which cylindrical lenses R are arranged in parallel on one side, and the other side is flat, the hardening resin layer 2 is formed into a part 2b which is hardened in a stripe manner, and a non-hardened part 2a by an ionizing radiation, a transfer sheet 3 provided with a black colored layer 3a is overlapped over the whole surface thereof, the colored layer 3a is transferred to only the non-hardened part 2a of the hardening resin layer 2, a light-shielding black stripe pattern 5 is formed on a flat surface of the reticular sheet 1, and the conductive filler is contained in the light-shielding black stripe pattern 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a light-shielding black stripe pattern formed on one side (flat surface) of a lenticular sheet, and since the light-shielding black stripe pattern has conductivity, harmful electromagnetic waves and the like emitted from the display are prevented. The present invention relates to a lens sheet having an electromagnetic shielding function which can be used as a front plate for not only absorbing but also losing optical characteristics and particularly as a shielding measure for a plasma display or the like, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, the following various methods have been known as methods for molding a lens sheet represented by a lenticular sheet. Press method The thermoplastic resin is pressed using a heated stamper,
A method of molding the lens surface. Casting method A method in which a melt-softened thermoplastic resin is applied to the uneven surface of the stamper, injected and solidified to form the lens surface. In recent years, a method exemplified below has been developed as a method of forming a lens sheet using an ionizing radiation (ultraviolet light = UV or electron beam = EB) curable resin instead of such a thermoplastic resin. I have.

For example, according to Japanese Patent Application Laid-Open No. Sho 61-177215, a transparent resin plate that transmits ionizing radiation (ultraviolet rays) and a stamper having irregularities of a predetermined shape (Fresnel lens surface) forming a lens are formed. After filling the gap defined by the formation surface with an ultraviolet curable resin, the resin is irradiated with ultraviolet rays from the transparent resin plate side to cure the resin, and polymerized and adhered to the transparent resin plate.
A method for manufacturing a Fresnel lens having a laminated structure has been proposed.

When a lenticular sheet formed by these various methods is applied to a projection screen, a light-shielding pattern (black stripe in a lenticular plate) is conventionally formed in order to improve contrast. Is being done. That is, various printing methods such as offset, gravure, and screen are commonly used as a method of forming a light-shielding pattern. However, in the printing method, printing with high positional accuracy such that an image portion becomes a light absorbing portion is performed. When a plate was required to be manufactured, and the lens array of the lens sheet was miniaturized or the lens sheet was enlarged, it was more difficult to manufacture and register (position) the printing plate.

For this reason, as a method of forming a light-shielding pattern other than the ordinary printing method, the following methods are known. For example, in JP-A-56-38035, a light absorbing layer is formed on a “surface of a concave portion or a convex portion” other than a region including a light converging portion of a lenticular plate. In addition, Tokuhei 2
According to Japanese Patent No. 16497, a light absorbing layer is formed by extruding a lenticular surface and, at the same time, laminating ink on an area other than the lenticular light collecting section using an ink application roll. The ink application roll is installed immediately after the molding die roll on the lenticular surface,
A ridge is provided at a position corresponding to a part other than the lenticular light collecting part. While supplying an ink containing a light absorbing agent and a resin capable of being thermally laminated to a transparent substrate (lenticular plate) to the ridge portion,
A light absorbing layer is formed. In order to form a light absorbing layer in a desired portion, registration of an ink application roll is performed with respect to a lenticular mold roll.

However, the method proposed in Japanese Patent Application Laid-Open No. 56-38035 requires a "surface of a concave portion or a convex portion" in which a portion for forming a light absorbing layer is formed on a flat surface of a lenticular plate. Therefore, not only does the shape of the lens sheet become complicated and molding becomes difficult, but also the strength of the lens sheet (the portion corresponding to the valley of the lenticular surface becomes thinner when the concave portion is deepened) decreases. is there. In Japanese Patent Publication No. 2-16497, it is necessary to produce a printing plate (ink-applying roll) having high positional accuracy, similarly to a normal printing method. That is, the light-shielding pattern depends on the image portion of the printing plate (the ridge portion of the ink application roll), and the light-shielding pattern is formed at a desired portion (a portion other than the lenticular light collecting portion) of the lens sheet. Whether or not it depends on the precision of the printing plate and the alignment during printing (printing plate and lens sheet).

Further, a method for forming a light-shielding pattern with a reliable positional accuracy on the rear surface of a lens sheet without the need for a printing plate, even for a lens sheet which does not require an uneven portion on which a light-shielding pattern is formed, is described below. Is disclosed. For example, according to Japanese Patent Application Laid-Open No. Sho 59-121033, a positive photosensitive adhesive (an adhesive whose adhesiveness is lost by exposure to light) is disposed on the observation surface side of a transmission screen (lens sheet). The adhesive is exposed by a light beam projected from a projection light source (projector) or a light source having an opening equivalent thereto from the surface opposite to the adhesive surface to lose the adhesiveness of the light collecting portion of each unit lens of the lens sheet. After that, the light-shielding toner is sprayed from the observation surface, adhered to the unexposed portion where the adhesive remains, by removing the toner and excess toner just attached to the portion where the adhesive has disappeared by exposure, This is a method for obtaining a transmissive projection screen on which a pattern having excellent light shielding properties is formed easily and inexpensively without requiring a wet process. As described above, it is important to provide a light-collecting unit at the same position as when actually using a screen, and it is necessary to provide an exposure light source at the same or optically equivalent position as the projection light source. (Publication, column 8, 6)
-9th line) ", but there is no disclosure of any specific relationship between the form of the lens sheet and the projection light source and the optical system for exposure.

Therefore, as shown in FIG. 3 which is an explanatory view conceptually showing the state of use of the transmission screen, the transmission screen has a configuration in which a Fresnel lens F and a lenticular sheet 1 are combined, and a light source (projector). )
The projection light from P (similar to the diverging light from a point light source) is converted into parallel light by a Fresnel lens F, spread in a horizontal direction (a direction in which the cylindrical lenses are arranged) by the lenticular sheet 1, and is projected to the observer side. Function. Therefore, the light-shielding pattern (black stripe) 5a is formed on the flat surface of the lenticular sheet 1 on the viewer side. That is, when assuming that “a light-collecting portion is provided on a flat surface of a lenticular sheet at a position equivalent to that when a screen is actually used”, the lenticular sheet 1 is used when the Fresnel lens F is not used.
Must be exposed to parallel light from the side of the cylindrical lens R.

Further, as shown in FIG. 4, when divergent light is irradiated instead of parallel light, the incident angle of the light beam to the cylindrical lens R is changed between the central part (front of the light source) and the end of the lenticular sheet 1. Are different, the light condensing position is different, and as a result, the formation position of the black stripe 5a is different for each cylindrical lens. For this reason, when using a lenticular sheet having a black stripe as described above as a transmission screen, there is a Fresnel lens on the projection side, so that projection light impinges on the black stripe at the end of the screen, and the projected projection is observed. The disadvantage that the image is lost will occur.

In recent years, computer-related electronic devices have rapidly grown, and office computers, word processors, and the like have become widespread in workplaces and homes close to us. However, the electromagnetic waves generated from such electronic devices may cause malfunctions of peripheral devices, and recently, the effects on the human body may be considered. Therefore, it is necessary to take measures against electromagnetic wave damage generated by the electronic devices. . While the United States has already implemented self-regulation, Japan and other European countries have also
It is considered that voluntary regulations on electromagnetic waves will be made.

[0011]

Therefore, not only the transmission type projector described above, but also a plasma display which has recently been receiving attention, it is urgently necessary to take measures against electromagnetic wave shielding as the screen size increases. A basic method of blocking the electromagnetic wave is to cover the periphery of the electronic device with a conductive material such as a metal and to ground the electronic device. That is, a place where an electromagnetic wave is generated or a part which is susceptible to jamming radio waves is covered with a metal material, or the entire device is housing with a metal material processed by sheet metal processing. However, in this method, the weight of the electronic device itself becomes heavy, and in terms of mass productivity, processability, and cost,
At present, it is made of plastic material. In the case of personal computer monitor screens and plasma displays, a transparent conductive resin coat or a transparent conductive vapor-deposited film is applied to the cover of the screen surface, but these methods reduce the brightness of the monitor surface. There is a problem that the cost increases due to the increase in the number of manufacturing steps.

Accordingly, the present invention has been studied and devised in view of the above-mentioned problems of the prior art, and the electromagnetic wave generated from the plasma display is attached to the display surface so that the cover on the screen surface is coated or vapor-deposited. The present invention provides a lens sheet having an electromagnetic wave shielding function using an inexpensive shielding material and a method of manufacturing the same, without the need for such a processing step.

[0013]

In order to achieve the above object, the present invention provides a cylindrical lens on one side,
The other surface is provided with an ionizing radiation-curable resin layer on the flat surface of the lenticular sheet, which is a flat surface, and the curable resin layer is formed into stripe-shaped portions and uncured portions by irradiation with ionizing radiation. A lenticular is obtained by superimposing a transfer sheet provided with a black colored layer on the entire surface, transferring the colored layer only to the uncured portion of the curable resin layer, and peeling the colored layer of the cured resin layer cured portion. A lenticular sheet in which a light-shielding black stripe pattern is formed on a flat surface of the sheet, wherein the light-shielding black stripe pattern contains a conductive filler, and is a lens sheet having an electromagnetic shielding function. .

[0014] The present invention is further characterized in that a simple substance or a composite of a metal powder and carbon is added to and mixed with the conductive filler.

Further, the amount of the metal powder of the conductive filler and the simple substance or composite of carbon is 5 to 100% by weight with respect to the binder.

Further, the thickness of the colored layer containing the conductive filler is 0.1 to 5.0 μm.

The method of manufacturing a lens sheet having an electromagnetic shielding function includes a step of forming an ionizing radiation-curable resin layer on a flat surface of a lenticular sheet having a cylindrical lens on one side and a flat surface on the other side; While relatively moving the ionizing radiation source and the lenticular sheet in the direction in which the cylindrical lenses are juxtaposed, the belt-like ionizing radiation extending in the longitudinal direction of the cylindrical lenses is irradiated perpendicularly to the flat surface of the lenticular sheet from the cylindrical lens side. And a step of forming the ionizing radiation-curable resin layer into an uncured portion and a cured portion in a stripe shape,
A step of superposing a transfer sheet having a black colored layer formed on the entire surface on the colored layer side, and transferring the colored layer only to the uncured portion by utilizing the viscosity of the uncured portion of the resin layer, A lenticular sheet in which a light-shielding black stripe pattern is formed by peeling a part of a colored layer from a lens sheet, wherein the light-shielding black stripe pattern contains a conductive filler.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION A lens sheet having an electromagnetic shielding function according to the present invention has a cylindrical lens provided on one side and an ionizing radiation-curable resin layer formed on a flat surface of a lenticular sheet having a flat surface on the other surface. While relatively moving the ionizing radiation light source and the lenticular sheet in the direction in which the cylindrical lenses are juxtaposed, the belt-like ionizing radiation extending in the longitudinal direction of the cylindrical lens is perpendicularly to the flat surface of the lenticular sheet from the cylindrical lens side. Irradiation, the curable resin layer is turned into an uncured portion and a cured portion in a stripe shape, and a black colored layer in which a conductive filler is mixed on the entire flat surface of the lens sheet on which the curable resin layer is formed. The transfer sheet on which is formed is superimposed on the colored layer side, utilizing the viscosity of the curable resin layer of the uncured portion, The serial colored layer is transferred only to the uncured portion, the lens sheet is obtained having an electromagnetic shielding function in which a light-shielding black stripe pattern by separating the color layer of the cured portion of the curable resin layer from the lens sheet.

That is, conventionally, in order to form a light-shielding pattern at the same position with respect to each cylindrical lens (the same non-light-collecting portion in all the cylindrical lenses), it is necessary to expose the entire surface with parallel light. For this reason, it is necessary to combine a Fresnel lens and provide a light source for exposure at the same or optically equivalent position as the light source (projector) in consideration of the use state of the transmission screen, but in the present invention, Without requiring a Fresnel lens, a light-shielding pattern can be formed at the same position with respect to all the cylindrical lenses. According to the exposure process of the present invention, a lenticular sheet is formed for each of the cylindrical lenses from the cylindrical lens side. Will function in the same way as collectively irradiating the entire surface with parallel light. Therefore, the formed light-shielding pattern (black stripe) is directed to the non-light-collecting portion due to the irradiation of the actual lenticular sheet with ionizing radiation. Can form a pattern.

According to the present invention, in a transfer sheet having a black colored layer formed thereon, an electromagnetic wave shielding effect can be obtained by mixing a conductive metal and conductive carbon alone or in a composite with the black colored layer. Things. The transfer sheet has a configuration in which a coloring layer is coated on one surface of a base material. As the base material, polyethylene terephthalate is generally used, and the coloring layer (ink) is generally used.
This is a mixture with a binder resin for holding a colorant. As the binder resin, a thermoplastic resin is generally used, and an acrylic resin, an epoxy resin, a saturated polyester resin, a polyvinyl chloride resin, a polyvinyl acetate resin, a vinyl chloride-vinyl acetate copolymer, a polyvinyl acetal resin, a phenol resin, Urethane resin etc. can be raised,
In consideration of adhesiveness with a UV curable resin and releasability from a substrate, an acrylic resin is preferable.

The conductive metal may be powder, flake,
Available in fiber form, aluminum, nickel,
Copper, iron, and the like, but dispersibility with a binder resin,
Aluminum is preferable in consideration of specific gravity, corrosion resistance, mechanical strength, and cost. Further, as the conductive carbon, while those of 10 ⁵ Ω · cm has conductivity, preferably better less 10 ⁰ Ω · cm.

The amount of the conductive metal or conductive carbon simple substance or composite added is 5 to the binder resin.
When the content is 5% by weight or less, the electromagnetic wave shielding effect is small, and when the content is 100% by weight or more, the dispersibility of the material and the fluidity of the coating liquid deteriorate. In consideration of the above, 20 to 60% by weight is more preferable.

When the thickness of the colored layer is 0.1 μm or less, the effect is not exhibited. When the thickness is 5.0 μm or more, the cohesive force of the layer is increased and burrs are generated at the time of transfer. It is preferably from 0.1 to 5.0 μm, more preferably from 0.5 to 2.0 μm.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. FIG. 1 shows a lens sheet having an electromagnetic shielding function of the present invention.
It shows a state of measures against electromagnetic shielding applied to a plasma display, and (B) is a partially enlarged view thereof. That is,
An electromagnetic shielding function is provided in which an ionizing radiation-curable resin layer 2 is provided on a flat surface of a lenticular sheet 1, a light-shielding black stripe pattern 5 is formed by a black colored layer mixed with a conductive filler, and a protective layer 6 is provided thereon. FIG.

FIG. 2 is an explanatory view showing a method of forming a light-shielding black stripe pattern according to the present invention in the order of steps. First, FIG. 2A shows a cylindrical lens R on one side.
Are arranged side by side, and the other surface is a flat surface. FIG. 2 (B) shows the lenticular sheet 1.
Shows the formation of an ionizing radiation-curable resin layer on the flat surface of the lenticular sheet 1. A photopolymer (ionizing radiation-curable resin) layer 2 having an adhesive property in an uncured state is applied to the flat surface of the lenticular sheet 1. The lenticular sheet 1 may be a transparent thermoplastic resin such as acrylic, vinyl chloride, or carbonate molded by any method, or an ionizing radiation-curable resin such as a UV-curable resin or an EB-curable resin. It may be made of a cured product of the used resin.

Next, FIG. 2C shows exposure of the lenticular sheet 1 to the ionizing radiation-curable resin layer 2. The uncured resin layer 2 is exposed to ionizing radiation (R) from the cylindrical lens R side. UV light). On this occasion,
While moving the lenticular sheet 1 in the direction in which the cylindrical lenses R are arranged, a strip-shaped light beam (hereinafter, referred to as slit light 7) extending in the longitudinal direction of the cylindrical lenses R (the direction perpendicular to the paper surface in the drawing) is converted into cylindrical light. Irradiation is performed perpendicularly to the flat surface of the lenticular sheet 1 from the lens R side. Light emitted from the light source K of ionizing radiation (ultraviolet light) is perpendicularly incident on the lenticular sheet 1 as slit light 7 passing through the opening of the mask M.
Due to this ionizing radiation, the curable resin layer 2 becomes uncured layer 2a.
And the cured layer 2b.

Next, as shown in FIG. 2D, the entire surface of the resin layers 2a and 2b is covered with the colored layer side of the transfer sheet 3 on which the colored layer 3a is formed, and pressed lightly. When the transfer sheet 3 is peeled, the colored layer 3a is transferred onto the resin layer of the uncured layer 2a, and is peeled without being transferred to the cured layer 2b. Therefore, as shown in FIG. 2E, the light-shielding black stripe pattern 5 is formed on the flat surface of the lenticular sheet 1. Although not shown, a Mylar film may be provided as a protective layer 6 on the light-shielding pattern 5.

The exposure conditions of the ionizing radiation (ultraviolet light) are as follows:
It is as follows. Light source used: Near ultraviolet mercury lamp (output 13kW, 120W /
cm) Moving speed: 2 cm / sec That is, the portion of the curable resin layer 2 condensed by the lens function of the cylindrical lens R is cured to make the portion non-adhesive. In addition, the part of the curable resin layer 2 that is not focused by the lens function has no tackiness.

Further, the transfer condition of the transfer sheet 3 is such that the colored layer (black) 3a of the transfer sheet 3 is superimposed on the curable resin layer 2, and the uncured resin layer 2a having an adhesive property (FIG.
The color layer 3a is transferred only to the hatched portion (D), and the color layer 3a is not transferred to the non-adhesive cured resin layer 2b.

Further, as the protective layer 6 of the light-shielding black stripe pattern 5, a protective layer having a diffusive property is formed in order to diffuse light and expand a viewing area (observed from the flat surface side of the lens sheet). (Not shown).
As an example of the protective layer having a diffusive property, a type in which a dispersant such as silicon oxide and titanium oxide is mixed with a resin is exemplified.

The following materials were used in the present invention. <Lenticular sheet> A lenticular sheet formed by forming a cylindrical lens group made of a cured product of a UV-curable resin (material: epoxy acrylate) on a transparent substrate (material: acrylic) having a thickness of 1.0 mm, and having a pitch of 0.4 mm. The spherical radius was 0.35 mm, the thickness of the lens part was 0.063 mm, and the size was 120 cm × 90 cm. <Photopolymer> Chromalin film (manufactured by DuPont) <Transfer sheet> A colored layer having the following formulation was coated on one side of polyethylene terephthalate as a base material with a wire bar to a thickness of 1.5 μm to form a transfer sheet. . <Protective layer> Mylar film

Further, examples of the composition of the colored layer are shown below. Composition 1 acrylic resin (Mitsubishi Rayon BR80) 20 parts by weight Aluminum powder paste (Toyo Aluminum TD280T) 10 parts by weight Carbon black (non-conductive) 5 parts by weight Solvent (MEK / toluene = 1/1) 65 parts by weight Composition 2 acrylic resin (Mitsubishi Rayon BR80) 20 parts by weight Conductive carbon black 10 parts by weight Solvent (MEK / toluene = 1/1) 70 parts by weight Composition 3 acrylic resin (Mitsubishi Rayon BR80) 20 parts by weight Aluminum powder paste (Toyo Aluminum TD280T) 5 parts by weight Parts Conductive carbon black 5 parts by weight Solvent (MEK / toluene = 1/1) 70 parts by weight Comparative composition 1 acrylic resin (Mitsubishi Rayon BR80) 20 parts by weight Carbon black (non-conductive) 10 parts by weight Solvent (MEK / toluene = 1/1) 70 parts by weight

The electromagnetic wave shielding property of the surface of the lenticular sheet produced as described above was measured by the following method. The shielding effect is generally represented by the following equation. SE = 20 log (Eb / Ea) SE: Shield effect (dB) Eb: Incident electric field intensity (V / m) Ea: Conduction electric field intensity (V / m) This shield effect is based on the electric field intensity before incidence and the electric field after passing. It is expressed in units of (dB) as the logarithm of the ratio to the intensity multiplied by 20. Therefore, the larger this value, the higher the shielding effect. Table 1 shows the measurement results for each of Composition Examples 1 to 3 and Comparative Composition.

[0034]

[Table 1]

[0035]

The effects of the present invention are listed below. According to the present invention, without providing an electromagnetic wave shielding layer, an electromagnetic wave shielding effect can be obtained by a light-shielding black stripe pattern containing a conductive filler, so that a decrease in luminance on the display surface can be prevented. According to the present invention, it is not necessary to provide an electromagnetic wave shielding layer, and a lenticular display can be manufactured in the same process as a conventional method, so that an increase in cost can be prevented. further,
In the present invention, the formed light-shielding black stripe pattern is for a non-light-collecting portion due to irradiation of an actual lenticular sheet with ionizing radiation, and is surely provided at a place where a truly light-shielding black stripe pattern is required. A pattern can be formed with positional accuracy.

[Brief description of the drawings]

1A and 1B show a lens sheet having an electromagnetic shielding function of the present invention, in which FIG. 1A shows a state of measures against electromagnetic shielding applied to a plasma display, and FIG. 1B is a partially enlarged view thereof.

2A and 2B are explanatory views showing a method of forming a light-shielding black stripe pattern according to the present invention in the order of steps, wherein FIG. 2A shows a lenticular sheet, and FIG. 2B shows the formation of an ionizing radiation-curable resin layer on this flat surface. , (C) show slit light (irradiation of ionizing radiation) on this resin layer, and (D)
Shows the transfer of the colored layer to the resin layer, and (E) shows a lenticular sheet on which a light-shielding black stripe pattern is formed.

FIG. 3 is an explanatory diagram conceptually showing a use state of a transmission screen.

FIG. 4 is an explanatory view conceptually showing that a formation position of a light-shielding black stripe pattern differs depending on exposure conditions.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lenticular sheet 2 ... Ionizing radiation curable resin layer 2a ... Uncured part 2b ... Cured part 3 ... Transfer sheet 3a ... Colored layer 5 ... Light shielding black stripe pattern 5a ... Light shielding pattern 6 ... Protective layer 7 ... Slit light M ... Mask K: Light source R: Cylindrical lens

Continuation of front page (72) Inventor Kazunobu Matsumoto 1-5-1, Taito, Taito-ku, Tokyo Letterpress Printing Co., Ltd.

Claims (5)

[Claims] 1. A cylindrical lens is arranged on one side,
The other surface is provided with an ionizing radiation-curable resin layer on the flat surface of the lenticular sheet, which is a flat surface, and the curable resin layer is formed into stripe-shaped portions and uncured portions by irradiation with ionizing radiation. A lenticular is obtained by superimposing a transfer sheet provided with a black colored layer on the entire surface, transferring the colored layer only to the uncured portion of the curable resin layer, and peeling the colored layer of the cured resin layer cured portion. A lenticular sheet having a light-shielding black stripe pattern formed on a flat surface of the sheet, wherein the light-shielding black stripe pattern contains a conductive filler. 2. The lens sheet having an electromagnetic shielding function according to claim 1, wherein a simple substance or a composite of a metal powder and carbon is added to and mixed with the conductive filler. 3. The amount of the metal powder of the conductive filler and the simple substance or composite of carbon added to the binder is 5 to 100% by weight.
Or a lens sheet having an electromagnetic shielding function according to claim 2. 4. The electromagnetic shielding function according to claim 1, wherein the colored layer containing the conductive filler has a thickness of 0.1 to 5.0 μm. A lens sheet having: 5. A cylindrical lens is provided side by side on one side,
A step of forming an ionizing radiation-curable resin layer on the flat surface of the lenticular sheet, the other surface of which is a flat surface, and moving the ionizing radiation light source and the lenticular sheet relative to each other in the direction in which the cylindrical lenses are arranged; A belt-shaped ionizing radiation extending in the direction, irradiating perpendicularly to the flat surface of the lenticular sheet from the cylindrical lens side, the ionizing radiation-curable resin layer into an uncured portion and a cured portion in the form of a stripe and A step of superposing a transfer sheet having a black colored layer formed on the entire surface on the colored layer side, and utilizing the viscosity of the uncured portion of the resin layer, transferring the colored layer only to the uncured portion,
A lenticular sheet in which a light-shielding black stripe pattern is formed by peeling a colored layer of the cured portion from a lens sheet, wherein the light-shielding black stripe pattern contains a conductive filler. A method for producing a lens sheet having a function.