WO2018123722A1 - Display member - Google Patents

Abstract

The present invention addresses the problem of providing a novel display member. Said problem is solved by an arrangement having: a first laminate comprising a first polarizing plate, and a first pattern phase contrast film which has multiple lag axis directions in a single plane and is provided with a pattern region in which the lag axis directions match; and a second laminate comprising a second polarizing plate, and a second pattern phase contrast film which has multiple lag axis directions in a single plane and is provided with a pattern region in which the lag axis directions match; the shape of the pattern region of the first pattern phase contrast film and the shape of the pattern region of the second pattern phase contrast film differing from each other.

Description

Display material

The present invention relates to a novel display member that displays images such as pictures and characters.

Surfaces such as transparent doors, transparent windows, transparent walls, and transparent partitions for the purpose of decoration, design improvement, entertainment enhancement, advertising, announcements, advertisements, and the provision of various information. In addition, various display members for displaying images such as pictures and characters using transparent or opaque ink and film have been proposed.

For example, in Patent Document 1, a semi-transparent or opaque colored or colorless pattern film having an arbitrary shape is formed on one surface of a transparent glass plate, and the other surface is opposed to the pattern film so as to cover a wider range. A decorative glass plate on which a translucent reflective film is formed is described.
According to this decorative glass plate, a pattern formed on one surface of the transparent glass is projected as a shadow on the other surface, so that a display rich in stereoscopic effect can be performed.

Patent Document 2 discloses a display sheet in which a predetermined pattern light-shielding portion that restricts light transmission is provided in a predetermined portion of a sheet material, and a predetermined pattern light-transmitting portion is formed transparently or punched in a predetermined area of the light-shielding portion Is described.
For example, when this display sheet is used for a window glass of a subway, the pattern of the light transmitting portion in the light shielding portion is displayed every time light passes through the car window, so that it is possible to display an image that is easy to catch the eye. it can.

Japanese Utility Model Publication No. 3-45932 Japanese Patent Laid-Open No. 6-12007

Starting with the display members described in these patent documents, the display members usually display images using color materials such as dyes and pigments such as ink and colored films.

An object of the present invention is to provide a new display member that displays an image without using coloring materials such as dyes and pigments.

In order to achieve this object, the display member of the present invention has a pattern region formed of a region having a plurality of slow axis directions in the same plane as the first polarizing plate, and the slow axis directions coincide with each other. A first laminate comprising: a first pattern retardation film provided with:
A second polarizing plate, and a second pattern retardation film having a plurality of slow axis directions in the same plane and provided with a pattern region formed in a region where the slow axis directions coincide with each other. A second laminate,
The shape of the pattern region of the first pattern retardation film of the first laminate and the shape of the pattern region of the second pattern retardation film of the second laminate are different from each other. I will provide a.

In such a display member of the present invention, in the state where the first laminate and the second laminate are laminated, the pattern region of the first pattern retardation film of the first laminate and the second laminate It is preferable that the second pattern retardation film has a plurality of overlapping regions formed so as to overlap with each other, and the overlapping regions have a plurality of types having different retardation values.
Moreover, it is preferable to have an overlapping region where the retardation value at 550 nm is 0 nm ± 10 nm as the overlapping region.
Moreover, it is preferable to have an overlapping region where the retardation value at 550 nm is 260 nm ± 40 nm as the overlapping region.
Moreover, it is preferable to have an overlapping region where the retardation value at 550 nm is 400 nm or more as the overlapping region.
Further, in the state where the first stacked body and the second stacked body are stacked, the boundary of the pattern area of the first pattern retardation film of the first stacked body and the second pattern of the second stacked body It is preferable that the boundary of the pattern region of the retardation film intersects at a plurality of locations.
Further, it is preferable that the first laminated body and the second laminated body are laminated with an interval of 1 mm or more.
Moreover, it is preferable to have a moving means for relatively moving the first stacked body and the second stacked body in the surface direction.
In addition, the first pattern retardation film of the first stacked body has two types of pattern regions, and the slow axes of the two types of pattern regions are orthogonal to each other. It is preferable that the pattern retardation film has two types of pattern regions and the slow axes of the two types of pattern regions are orthogonal to each other.
In addition, the first laminate includes a first transparent support on a surface opposite to the first polarizing plate of the first pattern retardation film, and the second laminate has the second pattern. It is preferable to provide a second transparent support on the surface of the retardation film opposite to the second polarizing plate.
Further, the first transparent support of the first laminate and the second transparent support of the second laminate have an in-plane retardation, and the first laminate and the second laminate. In the state where the body is laminated, it is preferable that the slow axis of the first transparent support of the first laminate and the slow axis of the second transparent support of the second laminate are orthogonal to each other.
Further, the first laminated body and the second laminated body, with the transmission axis of the first polarizing plate of the first laminated body and the transmission axis of the second polarizing plate of the second laminated body orthogonal to each other, Are preferably laminated.
In addition, in a state where the transmission axis of the first polarizing plate of the first laminated body is parallel to the transmission axis of the second polarizing plate of the second laminated body, Are preferably laminated.
In the region where the first laminate has a plurality of slow axis directions in the same plane at the position where the first polarizing plate is sandwiched with the first pattern retardation film, and the slow axis directions coincide with each other. A third pattern retardation film having a formed pattern region is provided, and a plurality of second stacked bodies are disposed in the same plane at a position sandwiching the second polarizing plate together with the second pattern retardation film. And a third pattern phase difference film of the first laminated body having a fourth pattern phase difference film provided with a pattern region formed in a region where the slow axis directions coincide with each other. The shape of the pattern region of the film is preferably different from the shape of the pattern region of the fourth pattern retardation film of the second stacked body.
Further, in the first laminate, the configuration of the pattern area of the first pattern retardation film and the shape of the pattern area of the third pattern retardation film are different from each other, and in the second laminate, It is preferable that the shape of the pattern region of the second pattern retardation film and the shape of the pattern region of the fourth pattern retardation film are different from each other.

According to the present invention, there is provided a new display member that displays an image without using coloring materials such as dyes and pigments.

FIG. 1 is a schematic side view of an example of the display member of the present invention. FIG. 2 is an exploded perspective view conceptually showing the display member shown in FIG. FIG. 3 is a conceptual diagram for explaining a pattern region of the display member shown in FIG. FIG. 4 is a diagram conceptually showing an image displayed by the display member shown in FIG. FIG. 5 is a conceptual diagram for explaining an image displayed by the display member shown in FIG. FIG. 6 is a conceptual diagram for explaining an image displayed by the display member shown in FIG. FIG. 7 is a conceptual diagram for explaining an image displayed by the display member shown in FIG. FIG. 8 is a schematic side view of another example of the display member of the present invention. FIG. 9 is an exploded perspective view conceptually showing the display member shown in FIG. FIG. 10 is a diagram conceptually showing an image displayed by the display member shown in FIG. FIG. 11 is a conceptual diagram for explaining an image displayed by the display member shown in FIG. FIG. 12 is a diagram conceptually showing a mask used for manufacturing the display member of the present invention. FIG. 13 is a diagram conceptually showing a mask used for manufacturing the display member of the present invention.

Hereinafter, the display member of the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.

In the following, “to” indicating a numerical range includes numerical values written on both sides. For example, when ε is a numerical value α to a numerical value β, the range of ε is a range including the numerical value α and the numerical value β, and expressed by mathematical symbols, α ≦ ε ≦ β.
An angle such as “45 °”, “parallel”, “vertical” and “orthogonal” means that the difference from the exact angle is within a range of less than 5 ° unless otherwise specified. The difference from the exact angle is preferably less than 4 °, more preferably less than 3 °.
In addition, “same” includes an error range generally allowed in the technical field. In addition to “100%”, “all”, “any” or “entire surface” includes an error range generally allowed in the technical field, for example, 99% or more, 95% or more, or The case of 90% or more is included.
In this specification, the “slow axis” means a direction in which the refractive index becomes maximum in the plane.

In this specification, Re (λ) represents an in-plane retardation at a wavelength λ. In the case where the measurement wavelength is not particularly described for the in-plane retardation value Re and the refractive index, the measurement wavelength is 550 nm.
In this specification, Re (λ) is a value measured at a wavelength λ in AxoScan OPMF-1 (manufactured by Optoscience).
By inputting the average refractive index ((Nx + Ny + Nz) / 3) and film thickness (d (μm)) in AxoScan,
Slow axis direction (°) and Re (λ) = R0 (λ)
Is calculated.
Note that R0 (λ) is displayed as a numerical value calculated by AxoScan, and means Re (λ).

In this specification, the refractive indexes Nx, Ny, and Nz are measured using an Abbe refractometer (NAGO-4T, manufactured by Atago Co., Ltd.) and a sodium lamp (λ = 589 nm) as a light source. Further, when measuring the wavelength dependency, it can be measured in combination with an interference filter by a multiwavelength Abbe refractometer DR-M2 (manufactured by Atago Co., Ltd.).
In the above measurement, as the assumed value of the average refractive index, values in the polymer handbook (John Wiley & Sons, Inc.) and catalogs of various optical films can be used.
The average refractive index values of main optical films are exemplified below: cellulose acylate (1.48), cycloolefin polymer (1.52), polycarbonate (1.59), polymethyl methacrylate (1.49), Polystyrene (1.59).

In the present specification, transparent means specifically that the non-polarized light transmittance (omnidirectional transmittance) at a wavelength of 380 to 780 nm may be 50% or more, preferably 70% or more, and preferably 85% or more. More preferably.

A feature of the present invention is that a pattern area corresponding to an image to be displayed (such as a picture and a character) is provided which has a plurality of slow axis directions in the same plane and is formed in an area where the slow axis directions coincide with each other. A plurality of the obtained pattern retardation films are used, and the shape of the pattern region of each pattern retardation film is different.

FIG. 1 is a schematic side view of the display member of the present invention, and FIG. 2 is a schematic perspective view of the display member shown in FIG. 1 in an exploded state. In the present invention, the side surface is a surface of the display member of the present invention as viewed from the surface direction of the main surface of the polarizing plate and the pattern retardation film or the support, and the front surface is orthogonal to the main surface. It is the surface seen from the direction to do.
The main surface is the maximum surface of a sheet-like material (film-like material, plate-like material).

As shown in FIG. 1 and FIG. 2, the display member 10 of the present invention has a first laminated body 12 and a second laminated body 14.
The first laminated body 12 is a rectangular plate-like object, and includes a first support 18, a first pattern retardation film 20, and a first polarizing plate 24. On the other hand, the second laminate 14 is the same rectangular plate as the first laminate 12, and includes a second support 28, a second pattern retardation film 30, and a second polarizing plate 32.

In the display member 10, the first laminate 12 is the first laminate in the present invention, the second laminate 14 is the second laminate in the present invention, and the first support 18 is the first transparent in the present invention. The first pattern retardation film 20 is the first pattern retardation film in the present invention, the first polarizing plate 24 is the first polarizing film in the present invention, and the second support 28 is the first in the present invention. 2, the second pattern retardation film 30 corresponds to the second pattern retardation film in the present invention, and the second polarizing plate 32 corresponds to the second polarizing film in the present invention.

In the first laminate 12, the first pattern retardation film 20 is laminated on one surface of the first support 18, and the first polarizing plate 24 is laminated on the surface of the first pattern retardation film 20. The That is, the first laminate 12 is provided with the first polarizing plate 24 on one surface of the first pattern retardation film 20 and the surface of the first pattern retardation film 20 on which the first polarizing plate 24 is provided. The first support 18 and the first polarizing plate 24 are provided with the first support 18 on the opposite surface, and the first pattern retardation film 20 is sandwiched between the first support 18 and the first polarizing plate 24.
On the other hand, in the second stacked body 14, the second pattern retardation film 30 is stacked on one surface of the second support 28, and the second polarizing plate 32 is formed on the surface of the second pattern retardation film 30. Laminated. That is, the second laminate 14 is provided with the second polarizing plate 32 on one surface of the second pattern retardation film 30 and the surface of the second pattern retardation film 30 on which the second polarizing plate 32 is provided. The second support 28 and the second polarizing plate 32 are provided with the second support 28 on the opposite surface, and the second pattern retardation film 30 is sandwiched between the second support 28 and the second polarizing plate 32.

In the following description, for the sake of convenience, the vertical direction in FIGS. 1 and 2 is the y direction (90 °). A direction that coincides with the plane direction of the first laminate 12 and the second laminate 14 (support, retardation film, polarizing plate) and is orthogonal to the y direction is defined as an x direction (0 °). Furthermore, let the direction orthogonal to the x direction and the y direction be the z direction. That is, in FIG. 1, the x direction is a direction perpendicular to the paper surface, and the z direction is a horizontal direction in the figure.
Accordingly, the first support 18, the first pattern retardation film 20 and the first polarizing plate 24 of the first laminate 12, and the second support 28, the second pattern retardation film 30 of the second laminate 14, and Both the second polarizing plates 32 are stacked in the z direction. The first stacked body 12 and the second stacked body 14 are also stacked in the z direction with the polarizing plate as the outer surface.
The same applies to the display device 80 according to the second aspect to be described later.

In the display member 10, the first stacked body 12 and the second stacked body 14 are stacked (overlapping when viewed from the z direction) with the polarizing plates facing each other and in contact with or apart from each other. That is, in the display member 10, the first stacked body 12 is arranged such that the first pattern retardation film 20 and the second pattern retardation film 30 are located between the first polarizing plate 24 and the second polarizing plate 32. And the second laminated body 14 are laminated.
Further, the first laminated body 12 and the second laminated body 14 are shifted in the plane direction (xy direction) when displaying a completed image (supported image (final target image)). Rather, the outer circumferences in the surface direction are laminated to coincide with each other. In the following description, this state is also referred to as “completely overlapping”.

The first support 18 of the first laminated body 12 is used as a preferred embodiment in order to support the first pattern retardation film 20 and the first polarizing plate 24. Further, the second support 28 of the second laminate 14 is used as a preferable mode in order to support the second pattern retardation film 30 and the second polarizing plate 32, and has an optical function. Preferably not.
In FIG. 2, the broken lines shown in the first support 18 and the second support 28 are the slow axes of the first support 18 and the second support 28. The first support 18 and the second support 28 are transparent resin films formed by stretching, for example, triacetyl cellulose (TAC) or the like, and have an in-plane retardation, although slightly.
Therefore, as shown in FIG. 2, the first support 18 and the second support 28 are preferably arranged so that the slow axes are orthogonal to each other so as to cancel out the phase difference between each other. Thereby, it is possible to prevent the occurrence of inconveniences such as color tone in the image displayed by the display member 10 due to the phase difference of the support.

As shown in FIG. 2, the first polarizing plate 24 of the first stacked body 12 has a transmission axis (polarization axis) of 45 ° with respect to the x direction (y direction) (arrow t1). Hereinafter, for convenience, the direction of the transmission axis of the first polarizing plate 24 is also referred to as −45 °.
The second polarizing plate 32 of the second laminate 14 also has a slow axis of 45 ° with respect to the x direction (y direction) (arrow t2). Here, as indicated by arrows t1 and t2, the transmission axis of the first polarizing plate 24 and the transmission axis of the second polarizing plate are orthogonal to each other. That is, the first polarizing plate 24 and the second polarizing plate are different from each other in the direction of the transmission axis by 90 °. Hereinafter, for convenience, the direction of the transmission axis of the second polarizing plate 32 is also referred to as + 45 °.

Both the first pattern retardation film 20 and the second pattern retardation film 30 are λ / 4 plates.
As described above, the first pattern retardation film 20 and the second pattern retardation film 30 have a plurality of slow axis directions in the same plane, and are formed in regions where the slow axis directions coincide with each other. A pattern area corresponding to an image such as a picture and characters to be displayed is provided. As will be described later, pattern areas provided in the first pattern retardation film 20 and the second pattern retardation film 30 are pattern areas 20x-1 to 20x-3, 20y-1 to 20y-3, 30x-1 and 30y-. 1 to 30y-3.
The first pattern phase difference film 20 and the second pattern phase difference film 30 have different pattern region shapes.

Regardless of the direction of the slow axis, the pattern areas of the first pattern retardation film 20 and the second pattern retardation film 30 are both λ / 4 retardation areas.
The λ / 4 retardation region with respect to the light transmitted through the polarizing plate is a wavelength within the control wavelength range, preferably ¼ of the center wavelength of the control wavelength range, or “center wavelength × n ± 1 of the center wavelength. A region having an in-plane retardation of “/ 4 (n is 0 or an integer of 1 or more)” is intended. For example, when the central wavelength of the control wavelength region is 1000 nm, a retardation plate having a retardation of 250 nm, 750 nm, 1250 nm, 1750 nm, or the like can be used as the λ / 4 retardation plate.
Each birefringent material used for the phase difference plate (retardation film) has a unique wavelength dispersion characteristic. When a normal forward wavelength dispersion material is used, a λ / 4 phase difference is obtained at a specific wavelength. By doing so, the phase difference is λ / 4 or more on the shorter wavelength side than that wavelength, and is λ / 4 or less on the longer wavelength side. Therefore, in order to express the effect of the λ / 4 phase difference on average in a certain wavelength range, it is necessary to set a value in consideration of the wavelength of the light source and the human visibility. Further, by using the wavelength dispersion characteristic, it is possible to block only light of a specific wavelength and change the color of transmitted light. On the other hand, when it is desired to suppress a change in color, it is preferable to use a retardation material having reverse wavelength dispersion.
More specifically, for example, when the light transmitted through the polarizing plate is light in the visible light region, Re (550) which is the value of the in-plane retardation of the pattern region measured at a measurement wavelength of 550 nm is 100 nm ≦ Re ( 550) ≦ 160 nm, more preferably 110 nm ≦ Re (550) ≦ 150 nm, and even more preferably 115 nm ≦ Re (550) ≦ 145 nm.

The image by the pattern area | region of the 1st pattern phase difference film 20 of the 1st laminated body 12 is an image which planarly viewed the sphere.
Specifically, as conceptually shown on the left side of FIG. 3, the image of the pattern area of the first pattern retardation film 20 is obtained by moving the sphere by a plane parallel to the y direction in the drawing passing through the center of the sphere. It is an image that is cut at a plurality of locations in the direction.
The first pattern retardation film 20 includes pattern regions 20x-1 to 20x-3 having a slow axis (arrow a1x) in the x direction and a pattern region 20y-1 having a slow axis (arrow a1y) in the y direction. To 20y-3 are formed. That is, the slow axes of the pattern areas 20x-1 to 20x-3 and the pattern areas 20y-1 to 20y-3 are orthogonal to each other. In other words, the pattern regions 20x-1 to 20x-3 and the pattern regions 20y-1 to 20y-3 differ in the direction of the slow axis by 90 °. Further, in the first pattern retardation film 20, the slow axes of adjacent pattern regions are orthogonal to each other.

The image by the pattern region of the second pattern retardation film 30 of the second laminate 14 is also an image obtained by viewing the sphere in plan view.
Specifically, as conceptually shown on the right side of FIG. 3, the image of the pattern area of the second pattern retardation film 30 is obtained by drawing a sphere at a plurality of locations in the y direction by planes parallel to the x direction in the figure. It looks like a cut image.
The second pattern retardation film 30 includes a pattern region 30x-1 having a slow axis (arrow a2x) in the x-axis direction and pattern regions 20y-1 to 20y- having a slow axis (arrow a1y) in the y direction. 3 are formed. As shown in FIG. 2, in the second pattern retardation film 30, all the regions other than the pattern regions 20y-1 to 20y-3 are the pattern regions 30x-1. That is, the slow axes of the pattern area 30x-1 and the pattern areas 30y-1 to 30y-3 are orthogonal to each other. In the second pattern retardation film 30 as well, adjacent pattern regions have their slow axes orthogonal to each other.

In the display member 10, the slow axes of the two pattern regions in the first pattern retardation film 20 and the second pattern retardation film 30 are orthogonal to each other, but the present invention is not limited to this. That is, in the present invention, the pattern retardation film has a plurality of slow axis directions within the same plane, and has different patterns as long as it has a plurality of pattern regions in which the directions of the slow axis coincide. Various angles can be used as the angle formed by the slow axis of the region.
In the present invention, when there are two types of pattern areas having different slow axis directions, such as the first pattern phase difference film 20 and the second pattern phase difference film 30 in the illustrated example, both pattern areas The angle formed by the slow axis is preferably 70 to 110 °, more preferably 80 to 100 °, and still more preferably 90 °, that is, orthogonal.

Here, as described above, the first polarizing plate 24 and the second polarizing plate 32 have transmission axes (arrows t1 and t2) of 45 ° (−45 ° and + 45 °) with respect to the x direction (y direction). The transmission axis of the first polarizing plate 24 and the transmission axis of the second polarizing plate 32 are orthogonal to each other.
The first pattern retardation film 20 and the second pattern retardation film 30 are both λ / 4 plates. The first pattern retardation film 20 includes pattern regions 20x-1 to 20x-3 having a slow axis in the x direction and pattern regions 20y-1 to 20y-3 having a slow axis in the y direction. On the other hand, the second pattern retardation film 30 includes a pattern region 30x-1 having a slow axis in the x direction and pattern regions 30y-1 to 30y-3. As shown in FIG. 3, the first pattern phase difference film 20 and the second pattern phase difference film 30 have different pattern region shapes.
Further, in the state where the first laminate 12 and the second laminate 14 are laminated, the first pattern retardation film 20 and the second pattern retardation film 30 are sandwiched between the first polarizing plate 24 and the second polarizing plate 32. It is. In other words, in the display member 10 that is a laminate, the first pattern retardation film 20 and the second pattern retardation film 30 are located inside the first polarizing plate 24 and the second polarizing plate 32.

Therefore, when the display member 10 is observed in a state where the first stacked body 12 and the second stacked body are stacked (overlapped), the light is blocked or transmitted depending on the transmitted region, thereby displaying various images. Is done. Further, when the display member 10 is observed in a state where the first stacked body 12 and the second stacked body 14 are completely overlapped and stacked, a checkered sphere conceptually shown in FIG. 4 is displayed.
Note that, as described above, the stacked state is a state that overlaps or overlaps when viewed from the z direction, that is, the state that overlaps indicates a state that overlaps when viewed from the z direction.

For example, when the display member 10 is observed in a state where the first stacked body 12 and the second stacked body 14 are completely overlapped and stacked, the light passes through the first polarizing plate 24 and becomes -45 ° linearly polarized light. Become.

A part of the −45 ° linearly polarized light enters, for example, an overlapping region where the pattern region 20y-1 of the first pattern retardation film 20 and the pattern region 30y-1 of the second pattern retardation film 30 overlap. . As described above, both the pattern region 20y-1 and the pattern region 30y-1 are λ / 4 phase difference regions, and the slow axes (arrows a1y and a2y) are both in the y direction. Therefore, the overlapping region (overlapping pattern region) is “λ / 4 phase difference region + λ / 4 phase difference region”, and −45 ° linearly polarized light results in a λ / 2 phase difference region (λ / 2 plate). ), And the polarization direction is rotated by 90 ° to become + 45 ° linearly polarized light.
The + 45 ° linearly polarized light that has passed through the pattern region 20 y-1 of the first pattern retardation film 20 and the pattern region 30 y-1 of the second pattern retardation film 30 then enters the second polarizing plate 32. Here, the second polarizing plate 32 is a polarizing plate having a transmission axis (arrow t2 (+ 45 °)) orthogonal to the transmission axis of the first polarizing plate 24 (arrow t1 (−45 °)). Therefore, the + 45 ° linearly polarized light incident on the second polarizing plate 32 is transmitted through the second polarizing plate 32, and this portion becomes transparent as shown in FIG.

On the other hand, after another part of the −45 ° linearly polarized light is transmitted through the first polarizing plate 24, for example, the pattern region 20x-3 of the first pattern retardation film 20 and the pattern of the second pattern retardation film 30 are used. The light enters the overlapping region where the region 30y-1 overlaps. As described above, the pattern region 20x-3 and the pattern region 30y-1 are both λ / 4 phase difference regions, but the slow axes (arrows a1x and a2y) are orthogonal to each other. Therefore, the overlapping area (overlapping pattern area) is “λ / 4 phase difference area + (− λ / 4 phase difference area)”, and −45 ° linearly polarized light is transmitted through an optically empty area. It will be the same as the case. That is, the light transmitted through the pattern region 20x-3 and the pattern region 30y-1 is the same linearly polarized light of −45 ° as the linearly polarized light transmitted through the first polarizing plate 24 (transmission axis −45 ° (arrow t1)). is there.
The −45 ° linearly polarized light transmitted through the pattern region 20 x-3 of the first pattern retardation film 20 and the pattern region 30 y-1 of the second pattern retardation film 30 is also incident on the second polarizing plate 32. As described above, the second polarizing plate 32 is a polarizing plate having a transmission axis (arrow t2 (+ 45 °)) orthogonal to the transmission axis (arrow t1 (−45 °)) of the first polarizing plate 24. Accordingly, the −45 ° linearly polarized light incident on the second polarizing plate 32 is shielded by the second polarizing plate 32, and this portion is displayed in black as shown in FIG.

Similarly, for example, the −45 ° linearly polarized light incident on the region where the pattern region 20y-2 of the first pattern retardation film 20 and the pattern region 30y-2 of the second pattern retardation film 30 overlap is two sheets. And passing through a λ / 2 phase difference region consisting of the λ / 4 phase difference region, the polarization direction becomes + 45 ° linearly polarized light rotated by 90 ° with respect to the transmission axis (−45 °) of the first polarizing plate 24, The light passes through the second polarizing plate 32 having a transmission axis of + 45 °, and a transparent display is obtained as shown in FIG.
Further, for example, the −45 ° linearly polarized light incident on the region where the pattern region 20x-2 of the first pattern phase difference film 20 and the pattern region 30y-2 of the second pattern phase difference film 30 overlap each other is 4 is linearly polarized light of −45 °, and is therefore shielded from light by the second polarizing plate 32 having a transmission axis of + 45 °, resulting in a black display as shown in FIG.

Thereby, the first laminated body 12 and the second laminated body 14 are completely overlapped and laminated, thereby displaying a checkered sphere image as shown in FIG.

That is, according to the present invention, there is provided a pattern region corresponding to an image to be displayed, which is formed in a region having a plurality of slow axis directions in the same plane and in which the slow axis directions coincide with each other, and By using a plurality of pattern retardation films having different pattern region shapes, a completely new display member capable of displaying various images can be provided.

Preferably, as shown in FIGS. 1 to 3, by overlapping the first stacked body 12 and the second stacked body 14, the pattern region of the first pattern retardation film 20 and the second pattern retardation film 30 are overlapped. A plurality of overlapping regions that overlap with the pattern region are formed, and a plurality of types of overlapping regions having different retardation values are formed as overlapping regions.
In the present invention, the overlapping region is a region in which one pattern region of the first pattern retardation film 20 and one pattern region of the second pattern retardation film 30 overlap in the z direction. It is. In other words, the region overlapping in the z direction is a region overlapping when viewed from the z direction.
In addition, the retardation value of the overlapping region means that one pattern region of the first pattern retardation film 20 and one pattern region of the second pattern retardation film 30 that overlap in the z direction are one retardation film. Retardation value when considered as.
Specifically, when the first stacked body 12 and the second stacked body 14 are overlapped, there is a delay between the overlapping pattern region of the first pattern retardation film 20 and the pattern region of the second pattern retardation film 30. By forming an area having the same phase axis direction and an overlapping area having different slow axis directions, an image such as a pattern and a character is displayed.

More preferably, as an overlapping region where the pattern region of the first pattern retardation film 20 and the pattern region of the second pattern retardation film 30 overlap, an overlapping region where the retardation value becomes 0 nm ± 10 nm, and 260 nm ± 40 nm Forming at least one of the overlapping regions.
Specifically, as an overlapping region formed by overlapping the first stacked body 12 and the second stacked body 14, a slow axis in the first pattern retardation film 20 is a pattern region in the x direction (arrow a1x). And when the slow axis in the second pattern retardation film 30 overlaps the pattern region in the y direction (arrow a2y), and the slow axis in the first pattern retardation film 20 is in the y direction (arrow a1y). When the pattern region overlaps the pattern region in which the slow axis in the second pattern retardation film 30 is in the x direction (arrow a2x), an overlapping region having a retardation value of 0 nm ± 10 nm is formed. This overlapping region is a region that is shaded and becomes black.
Further, as another overlapping region formed by overlapping the first stacked body 12 and the second stacked body 14, a slow axis in the first pattern retardation film 20 is a pattern region in the x direction (arrow a1x). When the slow axis in the second pattern retardation film 30 overlaps the pattern region in the x direction (arrow a2x), and the slow axis in the first pattern retardation film 20 is the pattern in the y direction (arrow a1y). When the region overlaps with the pattern region in which the slow axis in the second pattern retardation film 30 is in the y direction (arrow a2y), an overlapping region having a retardation value of 260 nm ± 40 nm is formed. This overlapping area is the above-described transparent area.
With such a configuration, it is possible to appropriately block and transmit light and display a high-quality image.

Furthermore, as another overlapping region formed by overlapping the first stacked body 12 and the second stacked body 14, a slow axis in the first pattern retardation film 20 is a pattern region in the x direction (arrow a1x). When the slow axis in the second pattern retardation film 30 overlaps the pattern region in the x direction (arrow a2x), and the slow axis in the first pattern retardation film 20 is the pattern in the y direction (arrow a1y). When the region overlaps with the pattern region in which the slow axis in the second pattern retardation film 30 is in the y direction (arrow a2y), an overlapping region where the retardation value is 400 nm or more may be formed.
When the first stacked body 12 and the second stacked body 14 are overlapped, by forming an overlapping region having such a retardation value, it is possible to add color to the displayed image and display a color image. It becomes possible.

It is more preferable to form a plurality of types of overlapping regions having different retardation values in the state where the first stacked body 12 and the second stacked body 14 are overlapped, more preferably the pattern region and the second pattern of the first pattern retardation film 20. The pattern region boundary of the phase difference film 30 intersects with the pattern region at a plurality of locations, and two or more overlapping regions, more specifically, four or more overlapping regions are formed around the intersection of the pattern region boundaries. Is to form.

As an example, the intersection of the boundary between the pattern areas 20x-2 and 20x-3 of the first pattern retardation film 20 and the boundary between the pattern areas 30x-1 and 30y-2 of the second pattern retardation film 30 in FIG. Referring to n, around this intersection n,
The pattern region 20x-2 of the first pattern retardation film 20 and the pattern region 30x-1 of the second pattern retardation film 30 are both in the x direction (arrows a1x and a2x (0 °)). Overlapping areas that are transparent with overlapping (x direction-x direction (0 ° -0 °));
The pattern region 20y-2 of the first pattern retardation film 20 whose slow axis direction is the y direction (arrows a1y and a2y (90 °)), and the second pattern position whose slow axis direction is the x direction. Overlapping region (y direction−x direction (90 ° −0 °)) where the pattern region 30x-1 of the phase difference film 30 overlaps and is shielded from light;
A pattern region 20x-2 of the first pattern retardation film 20 in which the direction of the slow axis is the x direction, and a pattern region 30y-2 of the second pattern retardation film 30 in which the direction of the slow axis is the y direction. Overlapping, shaded overlapping areas (x-direction-y-direction (0 ° -90 °)); and
A transparent overlapping region (pattern region 20 y-2 of the first pattern retardation film 20 and pattern region 30 y-2 of the second pattern retardation film 30, both of which the slow axis directions are the y direction) y-direction-y-direction (90 ° -90 °)); two types of retardation values are formed, and four types of overlapping regions are formed as slow axis combinations, and as a result, as shown in FIG. A patterned sphere is displayed.

In the display member 10 of the present invention, the position of the first pattern retardation film 20 of the first laminate 12 and the position of the second pattern retardation film 30 of the second laminate 14 are shifted in the z direction. That is, the image of the pattern area of the first pattern retardation film 20 and the image of the pattern area of the second pattern retardation film 30 are shifted in the z direction.
Therefore, when the display member 10 is observed at an angle with respect to the oblique direction, that is, the z direction, an image of the pattern area of the first pattern retardation film 20 and an image of the pattern area of the second pattern retardation film 30 are displayed. It is possible to obtain a visual effect such that a parallax is generated between the images and a stereoscopic image (a sense of depth) is displayed and the observation from the front is deformed.

As described above, in the display member 10 of the present invention, the first stacked body 12 and the second stacked body 14 may be stacked in close contact with each other, or may be stacked at an interval.
Here, the visual effect of the three-dimensional effect of the image and the deformation of the image increases as the gap between the first stacked body 12 and the second stacked body 14 increases. Therefore, when the first laminate 12 and the second laminate 14 are laminated at an interval in order to obtain effects such as the stereoscopic effect of the image and the deformation of the image, the interval between the two is set to 1 mm or more. Is preferred. The gap between the first stacked body 12 and the second stacked body 14 is the distance in the z direction between the first stacked body 12 and the second stacked body 14.
However, if the gap between the first stacked body 12 and the second stacked body 14 is too large, the parallax becomes too large, and the observed image may be inappropriate. Therefore, it is preferable to keep the gap between the first stacked body 12 and the second stacked body 14 within a range in which the displayed image can be appropriately observed according to the image to be displayed, the size of the display member 10, and the like.
Moreover, when providing a gap | interval between the 1st laminated body 12 and the 2nd laminated body 14, the 1st laminated body 12 is stuck on the one surface of a water tank, for example, and the 1st laminated body 12 of a water tank is stuck. By sticking the 2nd laminated body 14 on the surface on the opposite side to the done surface, the visual effect that a fish is swimming between images can be produced.

Furthermore, the display member 10 of the present invention may include a moving unit that relatively moves the first stacked body 12 and the second stacked body 14 in the surface direction.
The overlapping position of the pattern area of the first pattern retardation film 20 and the pattern area of the second pattern retardation film 30 by relatively moving the first laminate 12 and the second laminate 14 in the plane direction, and The intersection of the boundaries changes and the image changes accordingly.
Therefore, the first stacked body 12 and the second stacked body 14 are moved relative to each other from the state in which the first stacked body 12 and the second stacked body 14 do not overlap and are completely separated from each other and display nothing. And gradually increasing the amount of overlap between the first stacked body 12 and the second stacked body 14, and finally overlapping the layers completely to change the display image. Can also be completed. According to this configuration, since the display image changes until the first stacked body 12 and the second stacked body 14 are completely overlapped and stacked, what kind of image is finally displayed for the observer? Without knowing, it is possible to improve the entertainment of the image display.
Conversely, the first laminate 12 and the second laminate 14 are gradually overlapped from the state where the first laminate 12 and the second laminate 14 are completely overlapped and laminated, and the image is completed. By reducing the amount and separating them completely, it is possible to change the image and finally make a state where nothing is displayed.

For example, as conceptually shown in FIG. 5, in a state where the first stacked body 12 and the second stacked body 14 of the display member 10 are completely separated from each other in the plane direction, the first stacked body 12 and the second stacked body. The light incident on the body only passes through both, and nothing is seen.
From this state, when the first laminated body 12 and the second laminated body 14 are moved relative to each other in the plane direction so as to overlap each other, an image is displayed, and the first pattern phase difference is further increased according to the increase in the overlapping amount. The overlapping position of the pattern areas of the film 20 and the second pattern retardation film 30 and the intersection of the boundary of the pattern areas are gradually changed, and the image is changed.
For example, when the first stacked body 12 and the second stacked body 14 are overlapped by 1/4, a part of the pattern region 20x-1 of the first pattern retardation film 20 and the pattern of the second pattern retardation film 30 are overlapped. Part of the region 30y-1 and part of the pattern region 30y-2 overlap, part of the pattern region 20y-3 of the first pattern retardation film 20 and part of the pattern region 30x- of the second pattern retardation film 30 An image as conceptually shown in FIG. 6 is displayed overlapping with a part of 1.

Further, when the first stacked body 12 and the second stacked body 14 are relatively moved in the plane direction, and the amount of overlap between the first stacked body 12 and the second stacked body 14 increases, similarly, the amount of overlap increases. Accordingly, the overlapping positions of the pattern areas of the first pattern retardation film 20 and the second pattern retardation film 30, the intersections of the boundaries, and the like gradually change, that is, the overlapping areas fluctuate and the image changes.
For example, in the state where the first stacked body 12 and the second stacked body 14 are overlapped by 3/4, the pattern regions 20x-1, 20y-3, 20x-3, 20y-2, 20x of the first pattern retardation film 20 -2 and 20y-1 and a part of the pattern regions 30x-1, 30y-1, 30y-2, and 30y-3 of the second pattern retardation film 30 overlap, conceptually shown in FIG. An image as shown is displayed.

Further, when the first stacked body 12 and the second stacked body 14 are relatively moved in the plane direction and the amount of overlap between the first stacked body 12 and the second stacked body 14 increases, according to the increase in the amount of overlap. The overlapping position of the first pattern phase difference film 20 and the second pattern phase difference film 30 with the pattern region, the intersection of the pattern region boundary, etc. gradually change, the image changes, as shown in FIG. When the first stacked body 12 and the second stacked body 14 are completely overlapped and stacked, an image in a completed state displaying a checkered sphere is displayed.

Further, from the state where the completed image shown in FIG. 4 is displayed, the first stacked body 12 and the second stacked body 14 are relatively moved in the plane direction, and the overlapping amount of both stacked bodies is gradually increased. , By reducing the overlap region from the state where the completed image shown in FIG. 4 is displayed, the image is changed, and a state where 3/4 overlap shown in FIG. 7, 1 / shown in FIG. After four overlapping states, nothing is visible as shown in FIG.

Such relative movement between the first laminated body 12 and the second laminated body 14 may be performed by moving the first laminated body 12 while fixing the second laminated body 14, or alternatively, the first laminated body 14 may be moved. The body 12 may be fixed and the second laminated body 14 may be moved, or both the first laminated body 12 and the second laminated body 14 may be moved.
Moreover, there is no limitation also in the moving means of the 1st laminated body 12 and / or the 2nd laminated body 14, Various moving means of a well-known sheet-like thing (film-like thing, plate-like thing) can be utilized. .

When moving the 1st laminated body 12 and / or the 2nd laminated body 14, in the automatic door where a door pocket is transparent, for example, the 1st laminated body 12 is stuck on a door pocket, and the 2nd laminated body 14 is attached to a door. The first laminated body 12 and the second laminated body 14 may be completely overlapped and laminated in a state where the door is fully opened by sticking.
As a result, by opening the automatic door from the state where the automatic door is completely closed, it becomes possible to observe some image from a state where nothing is displayed, the image gradually changes, and the automatic door opens completely. When the automatic door is closed from the fully open state, the completed image gradually changes and the automatic door is closed. It is possible to produce a visual effect that returns to a state where nothing can be seen.
This configuration can also be used with a manual door instead of an automatic door.

Further, the display member of the present invention is not in a state in which the first laminate 12 and the second laminate 14 are completely overlapped and laminated, but the first laminate 12 and the second laminate 14 are misaligned and laminated. In this state, the pattern region of the first pattern retardation film 20 and the pattern region of the second pattern retardation film 30 may be formed so as to display a completed image.

8 and 9 conceptually show another aspect of the display member of the present invention. FIG. 8 is a side view similar to FIG. 1, and FIG. 9 is an exploded perspective view similar to FIG.
In addition, also in the display member 50 shown in FIG. 9, the first stacked body 52 and the second stacked body 54 may be stacked separately or in contact with each other.
Since the display member 50 shown in FIG. 9 uses many of the same members as the display member 10 shown in FIGS. 1 and 2, the same reference numerals are given to the same members, and the following description mainly focuses on different parts.

In addition to the first pattern retardation film 20 and the second pattern retardation film 30 described above, the display member 50 includes a third pattern retardation film (third pattern retardation film) 58 and a fourth pattern retardation film ( A fourth pattern retardation film) 60.
The display member 50 further includes two pattern phase difference films, so that an image formed by the first pattern phase difference film 20 and the second pattern phase difference film 30, a third pattern phase difference film 58, and a fourth pattern phase difference film are included. The image by the film 60 can be switched and displayed.

In the first laminated body 52 of the display member 50, the first pattern retardation film 20 is laminated on one surface of the first support 18, and the first polarizing plate is formed on the surface of the first pattern retardation film 20. 24, the third pattern retardation film 58 is laminated on the surface of the second polarizing plate 32, and the second first support 18 is formed on the surface of the third pattern retardation film 58. .
That is, the first laminated body 52 has a configuration in which the first polarizing plate 24 is sandwiched between the first pattern retardation film 20 and the third pattern retardation film 58 and both surfaces thereof are sandwiched between the first support 18.
On the other hand, in the second laminate 54, the second pattern retardation film 30 is laminated on one surface of the second support 28, and the second polarizing plate 32 is provided on the surface of the second pattern retardation film 30. The fourth pattern retardation film 60 is laminated on the surface of the second polarizing plate 32, and the second second support 28 is laminated on the surface of the fourth pattern retardation film 60.
That is, the second laminated body 54 has a configuration in which the second polarizing plate 32 is sandwiched between the second pattern retardation film 30 and the fourth pattern retardation film 60 and both surfaces thereof are sandwiched between the second supports 28.

In addition, the broken line arrow shown in the 1st support body 18 of the 1st laminated body 52 and the broken line arrow shown in the 2nd support body 28 of the 2nd laminated body 54 are the slow phases of a support body similarly to the previous example. Is the axis.
Similar to the display member 10 described above, in the first stacked body 52, the slow axes of the two first support bodies 18 are arranged orthogonally, so that the second stacked body 54 includes two second By arranging the slow axes of the support 28 orthogonal to each other, the phase difference of the support is canceled, and high-quality images can be displayed.

The third pattern retardation film 58 and the fourth pattern retardation film 60 are λ / 4 plates similar to the first pattern retardation film 20 and the second pattern retardation film 30 described above.
Accordingly, the third pattern retardation film 58 and the fourth pattern retardation film 60 have a plurality of slow axis directions in the same plane, and are formed in a region where the slow axis directions coincide with each other. Corresponding pattern areas (pattern areas 58x-1, 58y-1 to 58y-3, 60x-1 and 60y-1 to 60y-3 described later) are provided. In addition, the third pattern phase difference film 58 and the fourth pattern phase difference film 60 are different in the shape of the pattern region.

As will be described later, the images (supported images) displayed by the third pattern retardation film 58 and the fourth pattern retardation film 60 of the display device 80 are images obtained by viewing the cylinder in plan view.
The image of the pattern area of the third pattern retardation film 58 of the first laminate 52 is obtained by cutting the cylinder at a plurality of locations in the y direction (height direction) on a plane parallel to the x direction (a plane parallel to the bottom surface). It is an image like that.
The third pattern retardation film 58 includes pattern regions 58y-1 to 58y-3 having a slow axis (arrow a3y) in the y direction and other regions, ie, a slow axis (arrow a3x) in the x direction. And a pattern region 58x-1 having. That is, the slow axes of the pattern region 58x-1 and the pattern regions 58y-1 to 58y-3 are orthogonal to each other. Further, in the third pattern retardation film 58, the slow axes of adjacent pattern regions are orthogonal to each other.

On the other hand, the image of the pattern area of the fourth pattern retardation film 60 of the second stacked body 54 is a plane obtained by cutting the cylinder at a plurality of locations in the x direction along a plane parallel to the y direction.
The fourth pattern retardation film 60 includes pattern regions 60y-1 to 60y-3 having a slow axis (arrow a4y) in the y direction, and other regions, the slow axis (arrow a4x) in the x direction. And a pattern region 60x-1 having. That is, the slow axes of the pattern region 60x-1 and the pattern regions 60y-1 to 60y-3 are orthogonal to each other. Also in the fourth pattern retardation film 60, the slow axes of the adjacent pattern regions are orthogonal to each other.

As in the previous example, the first polarizing plate 24 and the second polarizing plate 32 have transmission axes (arrows t1 and t2) of 45 ° (−45 ° and + 45 °) with respect to the x direction (y direction). The transmission axis of the first polarizing plate 24 and the transmission axis of the second polarizing plate 32 are orthogonal to each other.
The third pattern retardation film 58 and the fourth pattern retardation film 60 are both λ / 4 plates, and a pattern area having a slow axis in the x direction and a pattern area having a slow axis in the y direction. And the shapes of the pattern regions of the two retardation films are different.
Therefore, when the display member 50 shown in FIG. 9 is observed in a state where the first stacked body 52 and the second stacked body 54 are completely overlapped and stacked, light is blocked or transmitted depending on the transmitted region. FIG. 10 shows the pattern regions of the third pattern retardation film 58 and the fourth pattern retardation film 60 in the same manner as the image display using the first pattern retardation film 20 and the second pattern retardation film 30 described above. A conceptual image is displayed.

For example, the display member 50 in a state where the first stacked body 52 and the second stacked body 54 are completely overlapped is observed.
At this time, the light transmitted through the second support 28 is incident on the second pattern retardation film 30, but since this light is not polarized, the second pattern retardation film 30 is hardly affected. The light passes through and enters the second polarizing plate 32.
The light incident on and transmitted through the second polarizing plate 32 becomes + 45 ° linearly polarized light.

The + 45 ° linearly polarized light is then incident and transmitted in the order of the fourth pattern retardation film 60, the second support 28, the first support 18, and the third pattern retardation film 58.
A part of the + 45 ° linearly polarized light is incident on, for example, an overlapping region where the pattern region 60y-1 of the fourth pattern retardation film 60 and the pattern region 58y-1 of the third pattern retardation film 58 overlap. As described above, both the pattern region 60y-1 and the pattern region 58y-1 are λ / 4 phase difference regions, and the slow axes (arrows a4y and a3y) are in the y direction. Therefore, the overlapping region (overlapping pattern region) is “λ / 4 phase difference region + λ / 4 phase difference region”, and linearly polarized light of + 45 ° results in a λ / 2 phase difference region (λ / 2 plate). ), And the polarization direction is rotated by 90 ° to be −45 ° linearly polarized light.
The −45 ° linearly polarized light transmitted through the pattern region 60y-1 of the fourth pattern retardation film 60 and the pattern region 30y-1 of the third pattern retardation film 58 is then incident on the first polarizing plate 24. As described above, the first polarizing plate 24 is a polarizing plate having a transmission axis (arrow t1) of −45 °. Accordingly, the −45 ° linearly polarized light incident on the first polarizing plate 24 is transmitted through the first polarizing plate 24.

The −45 ° linearly polarized light transmitted through the first polarizing plate 24 then enters the first pattern retardation film 20.
Since the first pattern retardation film 20 is a λ / 4 plate, the linearly polarized light of −45 ° changes to circularly polarized light. However, since there is no visual influence, the light passes through the first pattern retardation film 20 and then passes through the first support 18. Therefore, as shown in FIG. This part is transparent.

On the other hand, another part of + 45 ° linearly polarized light that has passed through the second support 28 and the second pattern retardation film 30 and has passed through the second polarizing plate 32 is, for example, the fourth pattern retardation film 60. The pattern region 60y-1 and the pattern region 58x-1 of the third pattern retardation film 58 are incident on the overlapping region. As described above, the pattern region 60y-1 and the pattern region 58x-1 are both λ / 4 phase difference regions, but the slow axes (arrows a4y and a3x) are orthogonal to each other. Therefore, the overlapping area (overlapping pattern area) is “λ / 4 phase difference area + (− λ / 4 phase difference area)”, and the + 45 ° linearly polarized light is transmitted through the empty area as a result. Same as the case. That is, the light transmitted through the pattern region 60y-1 and the pattern region 58x-1 remains as + 45 ° linearly polarized light in the same direction as the transmission axis (arrow t1) of the second polarizing plate 32.
The + 45 ° linearly polarized light that has passed through the pattern region 60 y-1 of the fourth pattern retardation film 60 and the pattern region 58 x-1 of the third pattern retardation film 58 then enters the first polarizing plate 24. As described above, the first polarizing plate 24 is a polarizing plate having a transmission axis (arrow t1) of −45 °. Therefore, + 45 ° linearly polarized light incident on the first polarizing plate 24 is shielded by the first polarizing plate 24. As a result, as shown in FIG. 10, this portion is displayed in black.

By such an action, the first laminated body 52 and the second laminated body 54 are completely overlapped to form a checkered cylindrical image as shown in FIG.

Similarly to the display member 10 described above, the display member 50 also moves the first stacked body 52 and the second stacked body 54 relative to each other in the plane direction, whereby the first stacked body 52 and the second stacked body. From the state where nothing is displayed apart from 54, the first laminated body 52 and the second laminated body are passed through, for example, a state where the first laminated body 52 and the second laminated body 54 overlap each other by 2/3 shown in FIG. By completely overlapping with 54, it is possible to display a completed checkered cylindrical image as shown in FIG. 10 while changing the image.
Further, as with the display member 10, a completed checkered pattern-like image is obtained by gradually reducing the amount of overlap between the two laminates from the state where the first laminate 52 and the second laminate 54 are completely overlapped. From this, it is possible to change the image so that the first stacked body 52 and the second stacked body 54 are completely separated from each other and nothing is displayed.

As described above, in the display member 50, in the state where the first stacked body 52 and the second stacked body 54 are stacked, the pattern retardation film positioned outside the first polarizing plate 24 and the second polarizing plate 32 is Only the pattern phase difference film located inside the first polarizing plate 24 and the second polarizing plate 32 acts on the image display without acting on the image display.
That is, in the state shown in FIG. 9, only the third pattern retardation film 58 and the fourth pattern retardation film 60 located inside the first polarizing plate 24 and the second polarizing plate 32 act on the display of the image. The first pattern retardation film 20 and the second pattern retardation film 30 located outside the polarizing plate do not act on image display.
Accordingly, for example, the first pattern retardation film 20 may be replaced by switching the first stacked body 52 and the second stacked body 54 in the z direction or by inverting the first stacked body 52 and the second stacked body 54. The second pattern retardation film 30 is positioned inside the first polarizing plate 24 and the second polarizing plate 32, and the third pattern retardation film 58 and the fourth pattern retardation film 60 are positioned outside the both polarizing plates. Thus, only the first pattern phase difference film 20 and the second pattern phase difference film 30 located inside the first polarizing plate 24 and the second polarizing plate 32 are allowed to act on the display of the image. A checkered sphere shown in FIG. 4 can be displayed.

That is, in the configuration shown in FIG. 9 in which the laminated body has two pattern retardation films with the polarizing plate interposed therebetween, either the first laminated body or the second laminated body is turned upside down, or the first Two or more images can be displayed by reversing both the laminate and the second laminate.

Similar to the display member 10 described above, the display member 50 is not in a state in which the first stacked body 52 and the second stacked body 54 are completely overlapped, but the first stacked body 52 and the second stacked body 54 are not stacked. You may make it display the completed image in the state which shifted | deviated and laminated | stacked.
In the display member 50, one image displays a completed image in a state where the first stacked body 52 and the second stacked body 54 are completely overlapped, and the other image is the first stacked body. The completed image may be displayed in a state in which the 52 and the second stacked body 54 are shifted and stacked.

In the display member 10 and the display member 50 described above, the transmission axes of the first polarizing plate 24 and the second polarizing plate 32 are orthogonal, but the present invention is not limited to this.
For example, the transmission axes of the first polarizing plate 24 and the second polarizing plate 32 may be parallel. In this case, for example, the display member 10 is shielded to display a black area, and the display member 10 is transparent, and the display member 10 is shielded to black.

As described above, the first laminate and the second laminate are configured to include a support (transparent support), a pattern retardation film, and a polarizing plate.

<Support>
The supports (the first support 18 and the second support 28) support the pattern retardation film and the polarizing plate. The support is provided as a preferred embodiment, and by having the support, the mechanical strength of the first laminate and the second laminate can be improved.

The material for forming the support is not particularly limited, and various materials can be used as long as they can form a transparent support.
Specifically, polycarbonate polymers, polyester polymers such as polyethylene terephthalate and polyethylene naphthalate, (meth) acrylic polymers such as polymethyl methacrylate, styrene polymers such as polystyrene and acrylonitrile / styrene copolymer (AS resin) Polyolefin polymers such as polyethylene, polypropylene, ethylene / propylene copolymers, vinyl chloride polymers, amide polymers such as nylon and aromatic polyamide, imide polycross-linked ruphone polymers, polyethersulfone polymers, polyethers Ether ketone polymer, polyphenylene sulfide polymer, vinylidene chloride polymer, vinyl alcohol polymer, vinyl butyral polymer, arylate Polymers, polyoxymethylene-based polymers, as well, and an epoxy-based polymer.

In addition, a thermoplastic norbornene-based resin can be preferably used as a support forming material. Examples of the thermoplastic norbornene-based resin include ZEONEX, ZEONOR manufactured by Nippon Zeon, and Arton manufactured by JSR.
In addition, as a material for forming the support, a cellulose polymer represented by triacetyl cellulose (TAC) can also be preferably used.

The thickness of the support is not particularly limited, but is preferably from 15 to 100 μm, more preferably from 20 to 80 μm, and particularly preferably from 40 to 60 μm from the viewpoint that the first laminate and the second laminate can be thinned.
The support preferably has a smaller in-plane retardation. Specifically, the support preferably has a retardation value (Re value) of 20 nm or less, and more preferably 10 nm or less.

<Pattern retardation film>
The material that forms the pattern retardation film (the first pattern retardation film 20, the second pattern retardation film 30, the third pattern retardation film 58, and the fourth pattern retardation film 60) is a material that exhibits the above-described characteristics. Any known material can be used without particular limitation.
Examples of the material for forming the pattern retardation film include liquid crystal compounds. More specifically, a retardation film (optically anisotropic layer) obtained by forming a low-molecular liquid crystalline compound into a nematic alignment in a liquid crystal state and then fixing by photocrosslinking, thermal crosslinking, or the like, a polymer liquid crystalline compound It is also possible to use a retardation film (optically anisotropic layer) obtained by forming a nematic alignment in a liquid crystal state and then fixing the alignment by cooling.

In general, liquid crystal compounds can be classified into rod-shaped types (rod-shaped liquid crystalline compounds) and disc-shaped types (discotic liquid-crystalline compounds) based on their shapes. Furthermore, there are low molecular type and high molecular type, respectively. Polymer generally refers to a polymer having a degree of polymerization of 100 or more (Polymer Physics / Phase Transition Dynamics, Masao Doi, 2 pages, Iwanami Shoten, 1992). In the present invention, any liquid crystalline compound can be used. Two or more rod-like liquid crystal compounds, two or more discotic liquid crystal compounds, or a mixture of a rod-like liquid crystal compound and a discotic liquid crystal compound may be used.
As the rod-like liquid crystalline compound, for example, those described in claim 1 of JP-T-11-53019 and paragraphs [0026] to [0098] of JP-A-2005-289980 are preferably used. it can. As the discotic liquid crystalline compound, for example, those described in paragraphs [0020] to [0067] of JP-A-2007-108732 and paragraphs [0013] to [0108] of JP-A-2010-244038 are preferable. Can be used. In the present invention, the liquid crystal compound is not limited to these.
From the viewpoint of suppressing color tone, it is preferable to use a liquid crystal compound having a reverse wavelength dispersion, and for example, it is also preferable to use a compound described in JP-A-2016-81035.
The pattern retardation film can more preferably be formed using a liquid crystalline compound having a polymerizable group (a rod-like liquid crystalline compound or a discotic liquid crystalline compound) since temperature change and / or humidity change can be reduced. The liquid crystalline compound may be a mixture of two or more types, and in that case, at least one preferably has two or more polymerizable groups.
That is, the pattern retardation film is preferably a layer formed by fixing a rod-like liquid crystalline compound or a discotic liquid crystalline compound having a polymerizable group by polymerization or the like. It is not necessary to show liquid crystallinity.
The kind of the polymerizable group contained in the discotic liquid crystalline compound and the rod-like liquid crystalline compound is not particularly limited, and a functional group capable of addition polymerization reaction is preferable, and a polymerizable ethylenically unsaturated group or a ring polymerizable group is preferable. More specifically, a (meth) acryloyl group, a vinyl group, a styryl group, an allyl group, etc. are mentioned preferably, and a (meth) acryloyl group is more preferable.

Note that the pattern retardation film may be a single layer film or a laminated film in which a plurality of layers are laminated.

The method of forming the pattern retardation film is not particularly limited. For example, when forming a pattern retardation film using a liquid crystalline compound, an alignment film for bringing the molecules of the liquid crystalline compound into a desired alignment state is used. The technology used is common.
The alignment film includes a rubbing treatment film made of an organic compound such as a polymer, an oblique deposition film of an inorganic compound, a film having a microgroove, an organic compound Langmuir such as ω-tricosanoic acid, dioctadecylmethylammonium chloride, and methyl stearylate. -Various well-known things, such as the film | membrane which accumulated the LB (Langmuir-Blodget) film | membrane by a blow jet method, can be utilized. Examples of the polymer used for the alignment film include polyimide, polyvinyl alcohol, and a polymer having a polymerizable group described in JP-A-9-152509.

In the present invention, the alignment film is a so-called alignment film obtained by irradiating light (for example, polarized light or non-polarized light) to a film (photo alignment film forming film) containing a photo-alignment material (photo alignment material). It is preferable to use a photo-alignment film.
For example, a photo-alignment film may be produced by applying a photo-alignment material on a support and applying a predetermined irradiation treatment through a mask. Irradiation with polarized light can be performed on the photo-alignment film forming film from a vertical direction or oblique direction, and non-polarized light irradiation can be performed on the photo-alignment film formation film from an oblique direction.

The photo-alignment material that can be used in the present invention is described in many documents. For example, JP 2006-285197 A, JP 2007-76839 A, JP 2007-138138 A, JP 2007-94071 A, JP 2007-121721 A, JP 2007-140465 A, The azo compounds described in JP 2007-156439 A, JP 2007-133184 A, JP 2009-109831 A, JP 3888848 A, and JP 4151746 A4, and described in JP 2002-229039 A Aromatic ester compounds, maleimide and / or alkenyl-substituted nadiimide compounds having a photoalignment unit described in JP-A No. 2002-265541 and JP-A No. 2002-317013, Japanese Patent No. 4205195, Japanese Patent No. 4205198 Photocrosslinkability described in Lan derivatives, photocrosslinkable polyimides, polyamides or esters described in JP-A No. 2003-520878, JP-A No. 2004-529220, JP-A No. 4162850, JP-A No. 9-118717, JP No. Hei 10- No. 506420, JP 2003-505561, WO 2010/150748, JP 2013-177561, JP 2014-12823, particularly cinnamate compounds, chalcone compounds, and coumarins. A preferred example is a compound. Particularly preferred are azo compounds, photocrosslinkable polyimides, polyamides, esters, cinnamate compounds, and chalcone compounds.

The thickness of the alignment film is only required to provide an alignment function, and is preferably 0.01 to 5 μm, more preferably 0.05 to 2 μm.

The pattern retardation film may be formed by a known method.
As an example, when the first pattern retardation film 20 is formed using a photo-alignment film, first, a coating liquid (light that becomes a photo-alignment film containing the first support 18 and a photo-alignment material) An alignment film coating solution) is prepared. As an example, the first support 18 has a slight phase difference.
A coating film of the photo-alignment film coating liquid is formed on one surface of the first support 18 by applying and drying the photo-alignment film coating liquid. Application of the coating liquid for the photo-alignment film may be performed by a known method such as a bar coating method or a spin coating method.

Next, the entire surface of the coating film is oriented in the y direction by irradiating the coating film of the coating liquid for photo-alignment film with linearly polarized light parallel to the slow axis with the slow axis of the first support 18 as the y direction. . Irradiation with linearly polarized light may be performed by a known method such as a method using a light source and a wire grid polarizing plate.
Next, the mask 64 shown in the left side of FIG. 12 prepared in advance according to the pattern area (the area shown in black is the light shielding area), the y direction (vertical direction) in the mask 64, and the slow axis of the first support 18 Install the same. In this state, the coating film is irradiated with linearly polarized light orthogonal to the previously irradiated linearly polarized light, that is, linearly polarized light in the x direction, through the mask 64.
Thereby, on the first support 18, the region corresponding to the pattern regions 20x-1 to 20x-3 is oriented in the x direction, and the region corresponding to the pattern regions 20y-1 to 20y-3 is oriented in the y direction. Then, a photo-alignment film is formed.

On the other hand, a coating solution for a retardation film for forming the first pattern retardation film 20 containing a polymerizable liquid crystalline compound or the like is prepared.
Thereafter, a coating solution for a retardation film is applied to the surface of the previously formed photo-alignment film. The coating of the retardation film coating solution may be performed by a known method as described above.
Furthermore, the coating liquid for retardation film applied as needed is dried, and the coating film for the retardation film coating liquid is irradiated with ultraviolet rays to cure the retardation film coating liquid. As a result, pattern regions 20x-1 to 20x-3 having a slow axis in the x direction and pattern regions 20y-1 to 20y-3 having a slow axis in the y direction are formed, as shown in FIG. In addition, the first pattern retardation film 20 supported by the first support 18 can be formed.

Also, as a method for producing a pattern retardation film without using a photo-alignment film, the methods described in JP 2012-32661 A and / or JP 2012-150428 A can be used.

<Polarizing plate>
As the polarizing plates (first polarizing plate 24 and second polarizing plate 32), so-called linear polarizing plates having a function of converting natural light into specific linearly polarized light are used.
As an example, an absorption linear polarizing plate is exemplified.
The type of the absorption linear polarizing plate is not particularly limited, and a known absorption polarizing plate can be used. For example, a dye-based polarization using an iodine-based polarizing film or a dichroic dye (dichroic organic dye) Either a film or a polyene polarizing film can be used. The iodine-based polarizing film and the dye-based polarizing film are generally produced by adsorbing iodine or a dichroic dye to polyvinyl alcohol and stretching it.

The polarizing plate may be a reflective linear polarizing plate in addition to the absorption linear polarizing plate.
As the reflective linear polarizing plate, known ones can be used. For example, a polarizing plate in which thin films having different birefringence are laminated, a wire grid polarizing plate, and the like are used. Examples of the polarizing plate on which thin films having different birefringence are laminated include those described in JP-T-9-506837 and commercial products such as 3M trade name: DBEF. Examples of the wire grid type polarizing plate include commercially available products such as a wire grid polarizing filter 50 × 50, NT46-636 manufactured by Edmund Optics.
Note that the reflective linear polarizing plate has a property of transmitting a polarized light component in a first direction and reflecting a polarized light component in a direction orthogonal to the first direction in incident light. That is, when non-polarized light is incident from one side of the polarizing plate, linearly polarized light is obtained from the other side.

In the display member of the present invention, the polarizing plate basically transmits or reflects visible light. Furthermore, you may permeate | transmit or reflect an ultraviolet-ray and / or infrared rays as needed.
In addition, infrared rays (infrared light) are electromagnetic waves in a wavelength region longer than visible rays and shorter than radio waves. Near-infrared rays are generally electromagnetic waves having a wavelength range of more than 750 nm and not more than 2500 nm. Visible light is light having a wavelength visible to the human eye among electromagnetic waves, and indicates light having a wavelength range of 380 to 750 nm. Ultraviolet rays (ultraviolet light) are electromagnetic waves in a wavelength range shorter than visible light and longer than X-rays. The ultraviolet light may be light in a wavelength region that can be distinguished from visible light and X-rays.

Such a polarizing plate is an optically transparent adhesive (OCA (Optical Clear Adhesive)), an optically transparent double-sided tape, an ultraviolet curable resin, or the like, which is used for bonding sheet-like materials in optical devices and optical elements. What is necessary is just to stick to a pattern phase difference film using an agent.
That is, as an example, the first laminate and the second laminate are formed by forming a pattern retardation film on one surface of the support as described above, and then attaching a polarizing plate to the pattern retardation film with an adhesive. And you can create it.

Although the display member of the present invention has been described in detail above, the present invention is not limited to the above-described configuration, and various improvements, polarization, and the like may be made without departing from the gist of the present invention. Of course.

Hereinafter, the features of the present invention will be described more specifically with reference to examples and comparative examples. The materials, amounts used, ratios, processing details, processing procedures, and the like shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be construed as being limited by the specific examples shown below.

The following support, coating liquid for photo-alignment film, coating liquid for retardation film, and polarizing plate were prepared.
<Support>
As the 1st support body 18 and the 2nd support body 28, the commercially available TAC film (The FUJIFILM company make, TD80UL) was prepared.
<Coating solution for photo-alignment film>
A coating solution for a photo-alignment film was prepared with reference to the description in Example 3 of JP 2012-155308 A.
<Coating liquid for retardation film>
A coating solution for retardation film having the following composition was prepared.
Coating liquid for retardation film-80.0 parts by mass of the following polymerizable liquid crystal 1-20.0 parts by mass of the following polymerizable liquid crystal 2-Polymerization initiator (IRGACURE 819, manufactured by BASF) 4.0 parts by mass-The following Air interface alignment agent 1 0.1 part by mass ・ Methyl ethyl ketone 416.4 parts by mass

<Polarizing plate>
As the first polarizing plate 24 and the second polarizing plate 32, polarizing plates HCL2-5618 manufactured by Sanritsu Co., Ltd. were prepared.

[Example 1]
[Production of First Laminate 12]
<Formation of patterned photo-alignment film A>
The coating liquid for photo-alignment film was formed on one surface of the first support 18 by applying the photo-alignment film coating liquid by a bar coating method.
The entire surface of the formed coating film was irradiated with linearly polarized light (linearly polarized light in the y direction) parallel to the slow axis (broken line) of the first support 18 at 100 mJ / cm ² (313 nm conversion) (first exposure). .
Next, a mask 64 conceptually shown on the left side of FIG. 12 prepared in advance was placed with the vertical direction (y direction) of the mask and the slow axis of the first support 18 in parallel. The mask 64 is a region where a black region in the drawing is shielded. The same applies to other masks in this regard.
Thereafter, the coating film is irradiated with a linearly polarized light orthogonal to the first exposure, that is, a linearly polarized light in the x direction, through the mask 64, and irradiated (second exposure) at 500 mJ / cm ² to be patterned. A photo-alignment film A was formed.
Irradiation with linearly polarized light was performed using a 750 W ultra-high pressure mercury lamp and a wire grid polarizer as a polarizer. The same applies to the irradiation of the linearly polarized light in the formation of other patterned photo-alignment films.

<Formation of First Pattern Retardation Film 20>
The prepared coating liquid for retardation film was applied to the surface of the formed patterned photo-alignment film A using a wire bar (# 3) to form a coating film. After drying the first support 18 having a coating film at 90 ° C. for 1 minute, light of 300 mJ / cm ² (converted to 313 nm) was formed at 60 ° C. under nitrogen using a 750 W ultrahigh pressure mercury lamp. The coating film was irradiated to form a first pattern retardation film 20 as shown in FIG.
Re (550) of each pattern region of the first pattern retardation film 20 was measured. As a result, in the production of the patterned photo-alignment film A, Re (550) in the pattern areas 20y-1 to 20y-3 (areas shielded by the mask 64 in the second exposure) irradiated with light only for the first exposure. ) Is 123 nm, and Re (550) of the pattern areas 20x-1 to 20x-3 (areas not shielded by the mask 64 in the second exposure) irradiated with light in both the first and second exposures is 123 nm. there were.
The slow axes of the pattern areas 20y-1 to 20y-3 are in the y direction (arrow a1x), and the slow axes of the pattern areas 20x-1 to 20x-3 are in the x direction (arrow a1y). The axes were orthogonal.

<Preparation of the 1st laminated body 12>
The first polarizing plate 24 and the first pattern retardation film are used with an adhesive (manufactured by Biei Imaging Co., Ltd., MCS70) so that the first pattern retardation film 20 is on the inner side with respect to the first polarizing plate. The 1st support body 18 which formed 20 was stuck, and the 1st layered product 12 as shown in Drawing 1 and Drawing 2 was produced.
At this time, the slow axis of the pattern regions 20y-1 to 20y-3 in which only the first exposure of the first pattern retardation film 20 as viewed from the first polarizing plate 24 side is performed is the first polarizing plate. The first laminated body 12 was produced by inclining 45 ° clockwise with respect to the transmission axis 24 (arrow t1) (that is, the transmission axis of the first polarizing plate 24 was −45 °).

[Production of Second Laminate 14]
<Formation of patterned photo-alignment film B>
In the same manner as the formation of the patterned photo-alignment film A, a coating film of the photo-alignment film coating solution was formed on one surface of the second support 28.
The entire surface of the formed coating film was irradiated with linearly polarized light (linearly polarized light in the y direction) orthogonal to the slow axis (broken line (x direction)) of the second support 28 at 100 mJ / cm ² (313 nm conversion) (1 Second exposure).
Next, a mask 68 conceptually shown on the right side of FIG. 12 prepared in advance was placed so that the vertical direction (y direction) of the mask 68 and the slow axis of the first support 18 were orthogonal to each other. Thereafter, the film is irradiated with a linearly polarized light (x direction) orthogonal to the first exposure through a mask 68 at 500 mJ / cm ² (converted to 313 nm) (second exposure) to form a pattern. A photo-alignment film B was formed.

<Formation of Second Pattern Retardation Film 30 and Production of Second Laminate 14>
A second pattern retardation as shown in FIG. 2 is formed by forming a retardation film in the same manner as the first pattern retardation film 20 except that the second support 28 on which the patterned photo-alignment film B is formed is used. A film 30 was formed.
Re (550) of each pattern region of the second pattern retardation film 30 was measured. As a result, in the production of the patterned photo-alignment film B, Re (550) in the pattern areas 30y-1 to 30y-3 (areas shielded by the mask 68 in the second exposure) irradiated with light only for the first exposure. ) Was 123 nm, and Re (550) of the pattern region 30x-1 irradiated with light in both the first exposure and the second exposure (region not shielded by the mask 68 in the second exposure) was 123 nm.
Further, the slow axis (arrow a2y) of the pattern areas 30y-1 to 30y-3 is in the y direction, the slow axis of the pattern area 30x-1 is in the x direction (arrow a2x), and the slow axes of both areas are orthogonal to each other. It was.
A second polarizing plate 32 as shown in FIG. 2 was produced by attaching a second polarizing plate 32 to the second patterned retardation film 30 in the same manner as the first laminated body 12 (second The transmission axis of the polarizing plate 32 is + 45 °.

[Production of Display Member 10]
The 1st polarizing plate 24 surface of the 1st laminated body 12 was stuck on the glass plate using the same adhesive as the previous, and the 1st laminated body 12 was stuck on the glass plate, and the 1st glass member was produced. . On the other hand, the 2nd polarizing plate 32 surface of the 2nd laminated body 14 is stuck to a glass plate using the same adhesive as the previous, and the 2nd glass member which stuck the 2nd laminated body 14 to the glass plate is used. Produced.
By placing the first glass member and the second glass member at a 1 cm interval (z direction) so that the transmission axes (arrows t1 and t2) of the polarizing plates are orthogonal to each other, the glass plate is Except not having, the display member 10 as shown in FIG. 1 and FIG. 2 was produced.

From the state where the first laminated body 12 and the second laminated body 14 do not overlap (FIG. 5), the first glass member and the second glass member are moved relative to each other in the surface direction, and gradually the first The glass member and the second glass member were overlapped.
As a result of observation from the first glass member side, nothing was initially displayed, but an image is displayed according to the overlap between the first laminate 12 and the second laminate 14, and according to an increase in the amount of overlap. As shown in FIGS. 6 to 7, the displayed images change, and when the first laminate 12 and the second laminate 14 are completely overlapped, a checkered pattern as shown in FIG. A sphere image was displayed. Further, when observed from an oblique direction, a visual effect such as a sense of depth due to parallax has occurred.

[Example 2]
[Production of First Laminate 52]
<Formation of patterned photo-alignment film C>
In the same manner as the formation of the patterned photo-alignment film A, a coating film of the photo-alignment film coating solution was formed on one surface of the second first support 18.
A patterned photo-alignment film C was formed in the same manner as the patterned photo-alignment film A, except that the mask was changed to a mask 72 conceptually shown on the right side of FIG. At this time, the vertical direction (y direction) of the mask 72 was set to be orthogonal to the slow axis (broken line) of the second first support 18.

<Formation of Third Pattern Retardation Film 58>
A third pattern retardation film 58 as shown in FIG. 9 was formed by forming a retardation film in the same manner as the first pattern retardation film 20 except that this patterned photo-alignment film C was used.
Re (550) of each pattern region of the third pattern retardation film 58 was measured. As a result, in the production of the patterned photo-alignment film C, Re (550) in the pattern areas 58y-1 to 58y-3 (areas shielded by the mask 72 in the second exposure) irradiated with light only for the first exposure. ) Was 123 nm and Re (550) of the pattern region 58x-1 irradiated with light in both the first and second exposures (the region that was not shielded by the mask 72 in the second exposure) was 123 nm.
Further, the slow axis (arrow a3y) of the pattern areas 58y-1 to 58y-3 is in the y direction, the slow axis of the pattern area 58x-1 is in the x direction (arrow a3x), and the slow axes of both areas are orthogonal to each other. It was.

<Preparation of the 1st laminated body 52>
For the first polarizing plate 24 of the first laminated body 12 similar to that of Example 1, the same pressure sensitive adhesive as above is used so that the third pattern retardation film 58 is on the inside, and the first laminated body 12 and Then, the second first support 18 on which the third pattern retardation film 58 was formed was adhered to produce a first laminate 52 as shown in FIG.
At this time, the sticking was performed so that the slow axis (broken line) of the first first support 18 and the slow axis (broken line) of the second first support 18 were orthogonal to each other. .

[Production of Second Laminate 54]
<Formation of patterned photo-alignment film D>
In the same manner as the formation of the patterned photo-alignment film A, a coating film of the photo-alignment film coating solution was formed on one surface of the second second support 28.
A patterned photo-alignment film C was formed in the same manner as the patterned photo-alignment film A, except that the mask was changed to a mask 70 conceptually shown on the left side of FIG. At this time, the vertical direction (y direction) of the mask 70 was made parallel to the slow axis (broken line) of the second second support 28.

<Formation of Fourth Pattern Retardation Film 60>
A fourth pattern retardation film 60 as shown in FIG. 9 was formed by forming a retardation film in the same manner as the first pattern retardation film 20 except that this patterned photo-alignment film D was used.
Re (550) of each pattern region of the fourth pattern retardation film 60 was measured. As a result, in the production of the patterned photo-alignment film D, Re (550) in the pattern areas 60y-1 to 60y-3 (areas shielded by the mask 70 in the second exposure) irradiated with light only for the first exposure. ) Was 123 nm and Re (550) of the pattern region 60x-1 irradiated with light in both the first and second exposures (the region not shielded by the mask 70 in the second exposure) was 123 nm.
Further, the slow axis (arrow a4y) of the pattern areas 60y-1 to 60y-3 is in the y direction, the slow axis of the pattern area 60x-1 is in the x direction (arrow a4x), and the slow axes of both areas are orthogonal to each other. It was.

<Production of Second Laminate 54>
Using the same adhesive as before, the second laminated body 14 and the second polarizing plate 32 of the second laminated body 14 similar to those in Example 1 are used so that the fourth pattern retardation film 60 is on the inner side. A second laminated body 54 as shown in FIG. 9 was produced by pasting the second second support 28 on which the fourth pattern retardation film 60 was formed.
At this time, the sticking was performed so that the slow axis (broken line) of the first first support 18 and the slow axis (broken line) of the second first support 18 were orthogonal to each other. .

[Production of Display Member 50]
The 1st laminated body 52 which has the 1st pattern retardation film 20 and the 3rd pattern retardation film 58, and the 2nd laminated body 54 which has the 2nd pattern retardation film 30 and the 4th pattern retardation film 60 are 1 cm. The display member 50 as shown in FIG. 8 and FIG. 9 was produced by installing with a gap (z direction).
At this time, as shown in FIG. 9, the first laminated body 52 and the second laminated body 54 are composed of the third patterned retardation film 58 and the fourth patterned retardation film 60, and the first polarizing plate 24 and the second polarized light. It was located between the plates 32, and the transmission axis (arrow t1) of the first polarizing plate 24 and the transmission axis (arrow t2) of the second polarizing plate 32 were orthogonal to each other.

From the state where the first stacked body 52 and the second stacked body 54 do not overlap (see FIG. 5), the first stacked body 52 and the second stacked body 54 are moved relative to each other in the plane direction, and gradually , Duplicated.
As a result of observation from the first stacked body 52 side, nothing was initially displayed, but an image is displayed according to the overlap between the first stacked body 52 and the second stacked body 54, and the image is changing. When the first laminate 52 and the second laminate 54 are completely overlapped after the two laminates shown in FIG. 11 are overlapped by 2/3, a checkered cylinder as shown in FIG. The image of was displayed. Further, when observed from an oblique direction, a visual effect such as a sense of depth due to parallax has occurred.

Further, the first laminated body 52 and the second laminated body 54 are switched in the laminating direction (z direction), and the first pattern retardation film 20 and the second pattern retardation film 30 are replaced by the first polarizing plate 24 and the second polarizing film 24. It was positioned between the polarizing plate 32. In this state, similarly, both laminates were moved from a separated state to a completely overlapping state. As a result, similar to the display member 10 of the first embodiment, the image displayed as shown in FIGS. 6 to 7 changes from the state shown in FIG. 5 where nothing is displayed, and the first laminate 52 is displayed. When the 2nd laminated body 54 and the 2nd laminated body 54 overlapped completely, the image of the checkered pattern sphere as shown in FIG. 4 was displayed. Thereby, according to the display member 50, it has confirmed that two different types of images could be displayed.
From the above results, the effects of the present invention are clear.

DESCRIPTION OF SYMBOLS 10,50 Display member 12,52 1st laminated body 14,54 2nd laminated body 18 1st support body 20 1st pattern retardation film 24 1st polarizing plate 28 2nd support body 30 2nd pattern retardation film 32 1st Two polarizing plates 58 Third pattern retardation film 60 Fourth pattern retardation film 64, 68, 70, 72 Mask 20x-1 to 20x-3, 20y-1 to 20y-3, 30x-1, 30y-1 to 30y -3, 58x-1, 58y-1 to 58y-3, 60x-1, 60y-1 to 60y-3 Pattern area a1x, a1y, a2x, a2y, a3x, a3y, a4x, a4y, t1, t1 arrow

Claims (15)

1. A first polarizing plate, and a first pattern retardation film having a plurality of slow axis directions in the same plane and provided with a pattern region formed in a region where the slow axis directions coincide with each other. A first laminate, and
   A second polarizing plate, and a second pattern retardation film having a plurality of slow axis directions in the same plane and provided with a pattern region formed in a region where the slow axis directions coincide with each other. A second laminate,
   The shape of the pattern region of the first pattern retardation film of the first laminate and the shape of the pattern region of the second pattern retardation film of the second laminate are different from each other. A display member characterized by the above.
2. In a state where the first laminate and the second laminate are laminated,
   A plurality of overlaps formed by overlapping the pattern region of the first pattern retardation film of the first laminate and the pattern region of the second pattern retardation film of the second laminate. The display member according to claim 1, wherein the display member has a region, and the overlapping region has a plurality of types having different retardation values.
3. 3. The display member according to claim 2, wherein the overlapping region has the overlapping region where a retardation value at 550 nm is 0 nm ± 10 nm.
4. The display member according to claim 2 or 3, wherein the overlapping region has the overlapping region where a retardation value at 550 nm is 260 nm ± 40 nm.
5. The display member according to any one of claims 2 to 4, wherein the overlapping region has the overlapping region where a retardation value at 550 nm is 400 nm or more.
6. In a state where the first laminate and the second laminate are laminated,
   The boundary of the pattern region of the first pattern retardation film of the first laminate and the boundary of the pattern region of the second pattern retardation film of the second laminate are a plurality of locations, The display member according to any one of claims 1 to 5, which intersects.
7. The display member according to any one of claims 1 to 6, wherein the first laminated body and the second laminated body are laminated with an interval of 1 mm or more.
8. The display member according to any one of claims 1 to 7, further comprising moving means for relatively moving the first laminated body and the second laminated body in a surface direction.
9. The first pattern retardation film of the first laminate has the two types of pattern regions, and the slow axes of the two types of pattern regions are orthogonal,
   The second pattern retardation film of the second laminate has two types of pattern regions, and the slow axes of the two types of pattern regions are orthogonal to each other. Item 1. A display member according to item 1.
10. The first laminate includes a first transparent support on a surface of the first pattern retardation film on the side opposite to the first polarizing plate,
    10. The method according to claim 1, wherein the second laminate includes a second transparent support on a surface of the second pattern retardation film opposite to the second polarizing plate. The display member as described.
11. The first transparent support of the first laminate and the second transparent support of the second laminate have an in-plane retardation;
    In the state where the first laminate and the second laminate are laminated, the slow axis of the first transparent support of the first laminate and the second of the second laminate. The display member according to claim 10, wherein the slow axis of the transparent support is orthogonal to the transparent support.
12. In a state where the transmission axis of the first polarizing plate of the first laminated body and the transmission axis of the second polarizing plate of the second laminated body are orthogonal to each other, the first laminated body and the second laminated body The display member according to any one of claims 1 to 11, wherein the laminate is laminated.
13. In a state where the transmission axis of the first polarizing plate of the first stacked body and the transmission axis of the second polarizing plate of the second stacked body are parallel, the first stacked body and the second stacked body The display member according to any one of claims 1 to 11, wherein the laminate is laminated.
14. A region in which the first laminated body has a plurality of slow axis directions in the same plane at a position sandwiching the first polarizing plate together with the first pattern retardation film, and the slow axis directions coincide with each other. A third pattern retardation film provided with a pattern region formed in
    A region in which the second laminated body has a plurality of slow axis directions in the same plane at a position sandwiching the second polarizing plate together with the second pattern retardation film, and the slow axis directions coincide with each other. A fourth pattern retardation film provided with a pattern region formed in
    The shape of the pattern region of the third pattern retardation film of the first laminate and the shape of the pattern region of the fourth pattern retardation film of the second laminate are different from each other. Item 14. The display member according to any one of Items 1 to 13.
15. A configuration in which the shape of the pattern region of the first pattern retardation film and the shape of the pattern region of the third pattern retardation film in the first laminate are different from each other; and
    The second laminated body has at least one configuration in which the shape of the pattern region of the second pattern retardation film and the shape of the pattern region of the fourth pattern retardation film are different from each other. The display member according to claim 14.

Images