JP2007264374A - Lenticular sheet for transmission type screen and method of manufacturing same, and rear projection display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lenticular sheet for a transmission type screen used for a liquid crystal projection television in combination with a Fresnel lens sheet, and to provide a method of manufacturing the same, and a rear projection display. <P>SOLUTION: The lenticular sheet is combined with the Fresnel lens sheet to constitute the transmission type screen. The lenticular sheet for the transmission type screen has convex cylindrical lenses formed on one surface of a transparent base and a flat surface on the opposite side of the base from the lens part and being provided with light shield patterns at positions corresponding to light non-convergence parts of the respective cylindrical lenses and also provided with a light diffusion layer on the light shield patterns, the diffusion layer being formed of a transparent layer. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a transmission screen lenticular sheet, a transmission screen manufacturing method, a light diffusion transfer sheet, and a rear projection display device, which constitute a transmission screen used in a liquid crystal projection television in combination with a Fresnel lens sheet. Specifically, a light diffusion layer can be formed by a transfer method, the surface of which can be controlled arbitrarily, and the layer can be uniform, the thickness can be reduced, and contrast and resolution are high, making it easy to manufacture. Lenticular sheet for transparent screen, manufacturing method thereof, and rear projection display device.

  The transmission screen is generally composed of a combination of a Fresnel lens sheet and a lenticular sheet. A light diffusion layer that functions by forming an image of the projection light from the projector (and diffusing and transmitting the light) is provided at any location on the screen.

  The lenticular sheet can spread the projection light within a predetermined angle range in the direction in which the convex cylindrical lenses are arranged side by side (generally in the horizontal direction).

  The projection light can hardly be spread in the vertical direction of the convex cylindrical lens. Therefore, it is necessary to install a light diffusing layer having a function of expanding the projection light in the vertical direction (which further expands in the horizontal direction) and also having a function of forming an image of the projection light.

  Further, when the projector is a three-tube CRT system as a transmissive projection television, it is necessary to correct the color misregistration of R, G, and B colors. For this reason, a lenticular sheet in which convex cylindrical lens groups are formed on both sides is used.

  In recent years, a transmissive liquid crystal projection television using a liquid crystal projector (single tube type) is becoming widespread, and a projection screen for observing the image is required.

  In addition, with the increase in image quality, the number of pixels of a liquid crystal projector has increased from the conventional hundreds of thousands of pixels to over one million pixels. For this reason, a fine pitch of the convex cylindrical lens is also required for the lenticular sheet.

  The fine pitch reduces the moire phenomenon caused by the periodicity of the pixels of the liquid crystal projector and the periodicity of the convex cylindrical lens.

  Specifically, on a television screen using a CRT projector, convex cylindrical lenses are arranged at a pitch of about 0.7 mm.

  In addition, with the widespread use of lenticular sheets, television screens using a liquid crystal projector with a large number of pixels are required to have a fine pitch of 0.3 mm or less. Accordingly, a light diffusion layer suitable for a transmissive liquid crystal projection screen is also required.

Further, the light diffusion layer is formed by, for example, applying a light diffusing ink in which light diffusing fine particles are dispersed and applied to a light transmissive resin, or a resin sheet in which light diffusing fine particles are dispersed and mixed. Is laminated on a light-transmitting resin.

  When the light diffusing layer is located outside the transmissive projection screen (observer side), the surface of the light diffusing layer is generally subjected to a hard coat treatment for the purpose of screen appearance and surface protection. The hard coat treatment layer is formed separately from the light diffusion layer.

  Further, in order to prevent dust and dirt from adhering to the screen surface due to static electricity, antistatic treatment is also performed. The antistatic layer may be formed separately from the light diffusion layer.

  Further, as a light diffusing plate used in a transmissive screen, for example, a plate having a light diffusing layer mixed with a light diffusing agent and a transparent substrate to which the light diffusing layer is bonded is often used.

  As a method for manufacturing this light diffusion plate, for example, light manufactured by a method in which a light diffusion layer is formed on a transparent substrate by applying a solvent containing a resin mixed with a light diffusion agent to the transparent substrate and drying it. Diffusers are also known. (For example, refer to Patent Document 1).

  Also known are a method of adhering a light diffusion film to a transparent substrate with an adhesive, a method of producing a light diffusion plate by a coextrusion molding method using a resin mixed with a light diffusion agent, and the like.

Prior art documents are shown below.
JP 2004-77781 A

  However, the former method requires difficulty in the step of applying the solvent to the transparent substrate. And there exists a problem that the manufacturing cost of a light diffusing plate rises.

  Further, the latter method has a problem that it is difficult to reduce the thickness of the light diffusion layer and the resolution is lowered. Furthermore, when the materials used for the light diffusion film and the transparent substrate are different, there is a problem that problems such as warping and floating occur due to environmental characteristics.

  Further, in the coextrusion molding method, there is a problem that defects such as poor appearance of the sheet, a decrease in molding accuracy, and insufficient strength occur due to the dispersion blending of the light diffusing agent.

  In any method, it is difficult to arbitrarily control the uneven shape on the surface of the light diffusion layer, and satisfactory improvement effects and the like are not obtained.

  The present invention has been made in view of the above-described conventional problems, and the problem is that a light diffusion layer can be formed by a transfer method, and the surface thereof can be arbitrarily controlled. A transmission screen lenticular sheet that is uniform, can reduce thickness, has high contrast and resolution, and is easy to manufacture, a method for manufacturing the same, and a rear projection display device.

In order to solve the above problems, the invention according to claim 1 of the present invention provides:
In the lenticular sheet constituting the transmission screen in combination with the Fresnel lens sheet, a convex cylindrical lens is formed on one side of the transparent support, the anti-lens part side of the transparent support is a flat surface, and the flat surface has The light-shielding pattern is provided at a position corresponding to the non-condensing portion of each cylindrical lens, and the light diffusion layer is further provided on the light-shielding pattern, and the light diffusion layer is formed of a transfer layer. It is a lenticular sheet for transmission type screens characterized by these.

Next, the invention according to claim 2 of the present invention is as follows.
The lenticular sheet for a transmission type screen according to claim 1, wherein a sheet having an antistatic function and / or an antireflection function is laminated on the outermost surface on the side opposite to the lens portion via the light diffusion layer.

Next, the invention according to claim 3 of the present invention is
The light diffusing layer provided on the lenticular sheet side is sticky at normal temperature and hardens when exposed to activation energy rays to exhibit adhesiveness, and at least one of the diffusion transfer layer A light diffusion transfer sheet having a film attached to the surface of the substrate, and transferring the light diffusion transfer sheet to a transparent substrate. After the light diffusion transfer layer is cured, the film is released from the light diffusion transfer layer. 2. The method of manufacturing a transmissive screen lenticular sheet according to claim 1, wherein a diffusion layer is formed.

Next, the invention according to claim 4 of the present invention is
4. The method of manufacturing a transmissive lenticular sheet according to claim 3, wherein the light diffusion layer is formed by transfer using the light diffusion transfer sheet.

Next, the invention according to claim 5 of the present invention is
A rear projection display device comprising a screen comprising a combination of the lenticular sheet according to claim 1 and 2 and a Fresnel lens sheet.

The lenticular sheet for transmissive screens, the manufacturing method thereof, and the rear projection type display device of the present invention can arbitrarily control the surface of the light diffusion layer by forming the light diffusion layer by a transfer method. In addition, the contrast and resolution are high and manufacturing is easy.

  Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a cross section of an embodiment of a transmissive lenticular sheet of the present invention.

  As shown in FIG. 1, the lenticular sheet for a transmission type screen of the present invention has a lenticular lens part (convex cylindrical lens group) 2 formed on one surface of a transparent support 3 by a cured product of an ultraviolet curable resin, On the flat surface, a striped light shielding pattern (BS = black stripe) 7 is formed at a position corresponding to the non-light-collecting portion of each cylindrical lens.

  Further, a light diffusion layer formed by dispersing and blending the light diffusing fine particles 5 in the light transmissive resin 4 is transferred onto the upper surface. And it consists of the structure which combined the lenticular sheet | seat 10 and the Fresnel lens sheet | seat 1 by forming the light-diffusion layer 6 which served as adhesiveness.

  Next, FIG. 2 is a cross-sectional view showing a cross section of another embodiment of the transmission screen lenticular sheet of the present invention.

As shown in FIG. 2, an adhesive layer 9 is provided on the upper surface of the lenticular sheet 10, and a light diffusion plate 55 described later is pressure-bonded to the surface of the adhesive layer 9. As a result, rigidity is imparted to the lenticular sheet 10 and adhesion is improved.

  Moreover, it is preferable that the transparent support body 3 shown in FIG. 1 is subjected to an ultraviolet curable resin easy adhesion treatment on one side surface where the lens portion is formed. Examples of the material include polyethylene terephthalate (PET), polycarbonate (PC), and polyvinyl chloride (PVC).

  Further, the lenticular lens 2 has a function of diffusing the projection light in the horizontal direction. In addition, the cylindrical lens group is arranged side by side in the horizontal direction on one side on the projection direction side.

  In addition, a black stripe-shaped light shielding layer 7 is formed in the non-transmission portion of the projection light on the emission side flat surface on the side surface in the other direction.

  The lenticular lens portion 2 of the lenticular lens sheet 10 is manufactured using a roll-shaped lenticular lens mold and an ultraviolet curable resin. For example, an ultraviolet curable resin is applied to the upper surface of a polyester resin, polycarbonate resin, vinyl chloride resin film or the like. Further, after drying, the mold is pressed with the mold, and the ultraviolet curable resin is cured by ultraviolet irradiation. Then, the film on which the cylindrical lenticular lens portion is molded is continuously wound up in a wound shape.

  The black stripe 7 is formed by forming the ultraviolet curable resin layer 8 on the flat surface of the base material opposite to the lens surface of the lenticular lens sheet.

  Next, while moving the light source and the lenticular lens sheet relative to each other in the direction in which the cylindrical lenses are juxtaposed, the strip-shaped light beam extending in the longitudinal direction of the cylindrical lens is applied from the cylindrical lens side to the flat surface of the base material of the lenticular lens sheet. Irradiation is perpendicular to the formed ultraviolet curable resin layer 8.

  Then, after curing the ultraviolet curable resin in the portion condensed by each cylindrical lens, the transfer sheet in which the black colored layer is formed on the transfer sheet base material on the entire surface of the ultraviolet curable resin layer 8 is colored. Superimpose on the layer side.

  Furthermore, the black colored layer is attached only to the uncured portion by using the adhesiveness of the UV curable resin in the uncured portion, and the stripe-shaped light shielding layer 7 is formed. Alternatively, the black fine powder toner can be selectively attached only to the uncured portion.

  According to the above-described exposure process, each cylindrical lens functions in the same manner as when the parallel light is collectively irradiated onto the entire surface of the lenticular sheet from the cylindrical lens side.

  Moreover, the light shielding layer 7 to be formed is only for the non-light-condensing part by the ultraviolet irradiation of the actual lenticular sheet. And it can form with a reliable positional accuracy in the location which needs to form the light shielding layer 7 truly, that is, the region where the projection light does not pass.

  Further, according to the above exposure process, the width of the light shielding layer can be controlled by controlling the width of the adhesive portion according to the exposure amount. The ratio of the width of the non-condensing part and the width of the (non-condensing part + condensing part) is defined as the BS ratio, and the BS ratio can be easily controlled.

  The surface of the light diffusion layer 6 is uniform and the surface roughness can be adjusted by transfer molding described later. At this time, the surface roughness Rz (10-point average roughness defined in JIS B 0601-1994) is preferably 1 μm or less.

  The light diffusing layer 6 is made of an active energy ray-curable resin that has adhesiveness at room temperature and cures when exposed to active energy rays (for example, ultraviolet rays) to exhibit adhesiveness.

  As the active energy ray curable resin, for example, an ultraviolet curable photopolymer is used. Specifically, a known adhesive containing an acrylic polymer, an acrylic monomer, a photoinitiator, and the like is used.

  With respect to the characteristics of such an active energy ray curable resin, it has a tackiness of, for example, about 100 g / inch in order to ensure removability in a state before being cured, and is adhesive in a state after being cured. For example, it is required that the adhesiveness of the cellotape (registered trademark) is good.

  On the other hand, if the thickness of the light diffusion layer 6 is too small, the adhesion of the light diffusion transfer layer is lowered. On the other hand, if it is too large, it will be difficult to apply in the solvent type described later. Furthermore, the resolution as a screen is reduced. For this reason, it is set to about 5 to 100 μm.

  Further, by adding an arbitrary amount of a light diffusing agent to the light diffusing layer 6, it becomes possible to control the haze of the light diffusing layer 6 itself and to arbitrarily control the surface diffusion characteristics and the internal diffusion characteristics.

  As the light diffusing agent, known ones conventionally used can be used and are not particularly limited. For example, organic particles made of styrene resin, acrylic resin, silicone resin, urea resin, formaldehyde condensate or the like, or inorganic fine particles made of glass beads, silica, alumina, calcium carbonate, or the like can be used.

  The shape of the diffusing agent may be spherical or irregular, or a combination of spherical and irregular shapes may be used. These fine particles have an average particle size of about 1 to 50 μm, preferably about 5 to 20 μm.

  And when an average particle diameter is less than 1 micrometer, since a scattering component becomes large and transmitted light intensity becomes small, contrast falls. On the other hand, when the thickness exceeds 50 μm, the unevenness of the light scattering characteristics increases.

  Next, FIGS. 3A and 3B are explanatory views for explaining an example of the configuration of the light diffusion layer of the transmissive lenticular screen according to the present invention.

  As shown in FIGS. 3A and 3B, the transfer layer to be the light diffusion layer 6, the first release film 52 adhered to one surface of the light diffusion layer 6, and the light diffusion layer 6. The light diffusion transfer sheet 50 provided with the 2nd release film 53 stuck on the other side of this is used.

  As the first release film 52, for example, a PET film having a surface treated with smoothness on the surface attached to the light diffusion layer 6 is used.

  The first release film 52 can be easily peeled from the light diffusion layer 6 in a state after the light diffusion layer 6 is cured.

  Moreover, as the 2nd release film 53, the release film by which surface treatments, such as a fluorine treatment and a silicon treatment, were given to the surface stuck on the light-diffusion layer 6, for example.

  The second release film 53 can be easily peeled from the light diffusion layer 6 in a state before the light diffusion layer 6 is cured. That is, the first release film 52 has a lower release property with respect to the light diffusion layer 6 than the second release film 53.

  The light diffusion transfer sheet 50 in which the first release film 52 and the second release film 53 are respectively bonded to both surfaces 6A and 6B of the light diffusion layer 6 is first a first release. A solvent containing an active energy ray-curable resin is applied to the film 52 and dried.

  Further, the first release film 52 is adhered to one surface 6A of the light diffusion layer 6. And a light-diffusion transfer sheet can be formed by sticking the 2nd release film 53 with respect to the other surface 6B of the light-diffusion layer 6. FIG.

  To manufacture the lenticular lens sheet 10 shown in FIG. 1 using the light diffusion transfer sheet 50 having the above configuration, first, as shown in FIG. 3A, the second release film 53 of the light diffusion transfer sheet 50 is used. Is released from the light diffusion layer 6. Further, the other surface 6B of the light diffusion layer 6 is exposed.

  Next, as shown in FIG. 3B, the light diffusion layer 6 of the light diffusion transfer sheet 50 is transferred onto the light shielding pattern 7 so that the other surface 6B is in close contact therewith.

  Then, active energy rays are transmitted through the first release film 52 from the active energy ray generating means U arranged on the first release film 52 side on the light diffusion layer 6 so that the active energy rays are transmitted through the light diffusion layer 6. Irradiate.

  The screen function can be improved when the lenticular sheet 10 is used by performing an antistatic treatment or an antireflection treatment on the outermost surface of the light diffusion layer 6 on the opposite side of the lens portion.

  Moreover, as a method of giving an antireflection function, there is a method of performing a process of giving an antireflection function to the surface of the first release film 52 itself.

  For example, a method in which the surface of the first release film 52 is subjected to mat treatment (fine irregularities) to diffusely reflect outside light. Alternatively, a method of coating the surface of the first release film 52 with a paint in which silica or the like is added to a resin serving as a binder. Further, there is a method in which a multilayer film having a changed refractive index is formed on the surface of the first release film 52 by vapor deposition.

  Moreover, in order to give an antistatic function, there are methods such as coating the surface of the first release film 52 with a surface active agent or adhesively laminating an antistatic film containing a surface active agent. By this method, the lenticular sheet 10 as shown in FIG. 1 can be manufactured.

  Furthermore, in the method of manufacturing the lenticular lens screen 11 using the lenticular sheet 10, first, the first release film 52 is released from the light diffusion layer 6. And the light-diffusion layer 6 is crimped | bonded on the transparent substrate 54 using the roll R in the uncured state.

At this time, it is desirable that the adhesive strength of the first release film 52 has an adhesiveness within 100 g / inch. Then, the active energy ray is irradiated to the light diffusion layer 6 from the active energy ray generating means U disposed on the transparent substrate 54. Thus, the lenticular lens screen 11 can be manufactured by curing the light diffusion layer 6 and bonding it to the transparent substrate 54.

  Examples of the transparent substrate 54 of the light diffusion plate 55 include heat such as acrylic resin, acrylonitrile resin, polycarbonate resin, cycloolefin resin, polyester resin, styrene resin, and acrylic / styrene copolymer resin. A plastic resin can be used. And it is more desirable that it has high light transmittance and impact resistance.

  Next, a manufacturing method of the lenticular lens screen 12 shown in FIG. 2 in which an adhesive layer is provided on the light diffusion layer 6 after curing and the light diffusion plate 55 is pressure-bonded to the surface of the adhesive layer 9 is as follows. An adhesive layer 9 is provided on the light diffusion layer 6 after curing in the lenticular sheet 10 described above.

  Next, the light diffusion plate 55 is manufactured using the light diffusion transfer sheet 50 described above. Then, as shown in FIG. 4A, the second release film 53 of the light diffusion transfer sheet 50 is released from the light diffusion layer 51, and the other surface 6B of the light diffusion layer 6 is exposed.

  Next, as shown in FIG. 4B, using the roll R, the light diffusion layer 6 of the light diffusion transfer sheet 50 and the other surface 6B are transparent substrates such as acrylic-styrene copolymer resin, for example. It sticks to the transparent substrate 54 so as to be in close contact with the surface of 54. The first release film 52 can be used as it is as a protective film at the end of the manufacturing process of the light diffusion plate 55.

  And as shown in FIG.4 (c), the 1st release film 52 is permeate | transmitted from the active energy ray generation means U arrange | positioned at the light-diffusion transfer sheet 6 side (upper side in FIG.4 (c)). Then, the active energy ray is irradiated to the light diffusion layer 6.

  Thereby, the light diffusion layer 6 is cured and adhered to the transparent substrate 54. At this time, if the first release film 52 has the characteristic of not transmitting the active energy rays, the active energy ray generating means U is disposed on the transparent substrate 54 side (lower side of FIG. 4C). . Then, it is possible to irradiate the light diffusion layer 6 with active energy rays so as to pass through the transparent substrate 54.

  Next, as shown in FIG. 4 (d), the first release film 52 is released from the cured light diffusion layer 6, whereby the light diffusion layer 6 and the light diffusion layer 6 are bonded to each other. Is obtained.

  As shown in FIG. 4E, the light diffusion plate 55 and the adhesive layer 9 of the lenticular sheet are bonded with a roll R, whereby the transmission screen 12 shown in FIG. 5B can be manufactured.

  Furthermore, the lenticular lens screen 11 shown in FIG. 5A and the layer 60 imparting an antistatic function or an antireflection function can be formed on the outermost surface opposite to the lens portion shown in FIG. 5B.

  Further, as shown in FIGS. 5A and 5B, in order to improve the screen function, as a method of providing the light reflection plate with the antireflection function, for example, a mat treatment (fine unevenness) is applied to the surface. A method to diffuse external light. Or the method of adding silica etc. to the acrylic resin used as the base of a protective layer. Alternatively, there is a processing method such as vapor deposition of a multilayer film having a change in refractive index.

  Furthermore, as a method for providing an antistatic function, there is a treatment method such as coating a surface of a protective layer with a surfactant. In any case, a film-like protective layer having a thickness of 1 mm or less is sufficient.

  Further, if the sheet-like protective layer is thick and rigid, the protective layer functions as a support substrate for the lenticular sheet. And it becomes easy to attach to the projection television.

  As described above, the surface diffusibility is obtained by bonding the light diffusion layer 6 on the light shielding pattern 7 or on the transparent substrate 54 only by transferring the light diffusion layer 6 onto the light shielding pattern 7 or the transparent substrate 54 by the transfer method. And the light diffusion plate 55 having internal diffusibility can be easily manufactured.

  Furthermore, the light diffusing plate 55 having the surface diffusibility and the internal diffusibility and having the antistatic function or the antireflection function on the transparent substrate 54 can be easily manufactured.

  The manufacturing process of the light diffusing plate 55 is a dry process and does not require a process of applying a conventional solvent to the transparent substrate 54. For this reason, this manufacturing process does not require difficulty, and the manufacturing cost of the light diffusing plate 55 can be reduced.

  In addition, the light diffusion layer 6 has adhesiveness, and a solvent containing an adhesive that cures and exhibits adhesiveness when irradiated with active energy rays is used as the first release film 52. It can be formed by applying to and drying. For this reason, it is possible to reduce the resolution by reducing the thickness of the light diffusion layer 6 transferred and formed on the transparent substrate 54.

  Furthermore, since the light diffusion layer 6 is transferred and formed on the transparent substrate 54, various problems as described above do not occur due to environmental characteristics.

  The lenticular lens sheet 10 can be manufactured by extruding a resin sheet by extrusion molding and forming the cylindrical lens shape 2 on the resin sheet by embossing using a stamper or the like.

  Alternatively, an ultraviolet curable resin (UV resin), an electron beam curable resin, or the like is applied or injected onto the concavo-convex forming surface of the stamper having a cylindrical lens shape, and a resin sheet serving as a base material is placed thereon, after the curing treatment, The cylindrical lens 2 can also be manufactured by a method of releasing from the stamper.

  It is desirable that the ultraviolet curable resin (UV resin) and the electron beam curable resin have a good releasability from the mold during photocuring, have excellent light resistance, and have a high hardness.

  Moreover, as a molding method of the Fresnel lens of the Fresnel lens sheet 1 shown in FIG. 1, there are a pressing method, a casting method, a UV resin method using an ultraviolet curable resin, and the like.

  In the pressing method and the casting method, the lens portion 1 ′ and the transparent substrate 54 are made of the same material. Examples of the material include thermoplastic resins such as acrylic resins, acrylonitrile resins, polycarbonate resins, cycloolefin resins, polyester resins, styrene resins, and acrylic / styrene copolymer resins. .

The UV resin method is a method in which a UV resin is applied or injected onto the uneven surface of the stamper, a diffusion plate 55 serving as a base material is placed thereon, and after being cured by ultraviolet (UV), it is released from the stamper. .

  A rear projection type display device comprising a transmissive screen made of the lenticular lens sheet 10 and the Fresnel lens sheet 1 and the like, and a power source for projecting image light on the rear surface of the transmissive screen, manufactured by the manufacturing method described above. Produced.

  Then, projection light (white light) was projected from a light source set such that the incident light angle with respect to the Fresnel lens sheet 1 was changed by 0 to 20 degrees in the vertical direction, and the transmitted light was visually observed and evaluated over the entire screen. The result was good.

  The transmissive screen lenticular sheet, the manufacturing method thereof, and the rear projection display device of the present invention are excellent inventions that can be used not only in a projection television set but also in the construction field.

It is sectional drawing which shows the cross section of one Example of the lenticular sheet for transmissive screens of this invention. It is sectional drawing which shows the cross section of another Example of the lenticular sheet for transmissive screens of this invention. (A), (b) is explanatory drawing for demonstrating the outline of one Example of a structure of the light-diffusion layer of the lenticular sheet for transmissive screens of this invention. (A)-(e) It is explanatory drawing for demonstrating one Example of the manufacturing method of the light diffusing plate of the lenticular sheet for transmissive screens of this invention. (A), (b) is explanatory drawing for demonstrating the outline of one Example of the layer which provides the antistatic function or the reflection preventing function of the lenticular sheet for transmissive screens of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fresnel lens sheet 1 '... Fresnel lens 2 ... Lenticular lens part 3 ... Transparent support 4 ... Light-transmitting resin 5 ... Light diffusing fine particle 6 ... Light diffusion Layer 7 ... BS (black stripe)
8 ... UV curable resin layer 9 ... Adhesive layer 10 ... Lenticular sheet 11 ... Lenticular lens screen 12 ... Lenticular lens screen 50 ... Light diffusion transfer sheet 52 ... First separation Mold film 53 ... Second release film 54 ... Transparent substrate 55 ... Light diffusion plate 60 ... Antistatic layer or antireflection layer

Claims (5)

  In the lenticular sheet constituting the transmission screen in combination with the Fresnel lens sheet, a convex cylindrical lens is formed on one side of the transparent support, the anti-lens part side of the transparent support is a flat surface, and the flat surface has The light-shielding pattern is provided at a position corresponding to the non-condensing portion of each cylindrical lens, and the light diffusion layer is further provided on the light-shielding pattern, and the light diffusion layer is formed of a transfer layer. A lenticular sheet for transmissive screens.   The lenticular sheet for a transmission type screen according to claim 1, wherein a sheet having an antistatic function and / or an antireflection function is laminated on the outermost surface on the side opposite to the lens portion via the light diffusion layer.   The light diffusing layer provided on the lenticular sheet side is sticky at normal temperature and hardens when exposed to the activation energy ray to exhibit adhesiveness, and at least one of the diffusion transfer layer A light diffusion transfer sheet having a film attached to the surface of the substrate, and transferring the light diffusion transfer sheet to a transparent substrate. After the light diffusion transfer layer is cured, the film is released from the light diffusion transfer layer. The method for producing a transmissive screen lenticular sheet according to claim 1, wherein a diffusion layer is formed.   4. The method for producing a lenticular sheet for a transmission type screen according to claim 3, wherein the light diffusion layer is formed by transfer using the light diffusion transfer sheet.   3. A rear projection display device, comprising a screen comprising a combination of the lenticular sheet for transmissive screen according to claim 1 or 2 and a Fresnel lens sheet.