Projection screen and projection system

Abstract

The invention provides a projection screen and a projection system, and the projection screen comprises a display diaphragm which is provided with a projection light-receiving surface; the supporting structure comprises a honeycomb supporting plate, the honeycomb supporting plate comprises a honeycomb core, the two opposite end faces of the honeycomb core are each provided with a skin layer, each skin layer comprises a first skin layer, the display diaphragm is fixedly connected to the first skin layer, and the first skin layers face the side of the display diaphragm and are used for reflecting light entering the projection light receiving face. The problem of deformation of the display diaphragm is solved, the production process of the projection screen is reduced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of projection technology, and in particular, to a projection screen and a projection system. Background Art

[0002] With the continuous development of society, people's pursuits are also constantly changing, and projection display systems are increasingly applied to people's work and life.

[0003] Currently, a display film basically consists of a light-resistant layer, a coloring layer, a diffusion layer, a Fresnel microstructure layer, and a reflective layer. The light emitted by an ultra-short throw projector is refracted through the surface of the display film and enters the film layer, and then is reflected by the Fresnel microlens layer (with a reflective layer coated on the back) and exits from the screen, and finally enters the human eye. In order to support the display film, the display film is bonded to a honeycomb support plate and then assembled with a frame.

[0004] However, the compounding of multi-functional layers in the existing display film results in a complex production process and a low yield. Due to the different expansion and contraction rates of different materials in each functional layer, the adaptability to the environment is different, and the screen is prone to deformation when the environment changes, resulting in warping of the film and deformation of the displayed image during the production process. Summary of the Invention

[0005] The main purpose of the present invention is to provide a projection screen and a projection system, which improve the problem of deformation of the display film, reduce the production process of the projection screen, and reduce costs.

[0006] To achieve the above object, in a first aspect, the present invention provides a projection screen, including:

[0007] A display film, the display film having a projection light-receiving surface;

[0008] A support structure, the support structure including a honeycomb support plate, the honeycomb support plate including a honeycomb core, both opposite end faces of the honeycomb core having a skin layer, the skin layer including a first skin layer, the display film being fixedly connected to the first skin layer, the first skin layer facing the display film side and being used for reflecting the light entering the projection light-receiving surface.

[0009] The beneficial effects of the present invention are as follows: By utilizing the material of the first skin layer in the honeycomb core to reflect the light entering the projection light-receiving surface, the display film can be directly fixed on the first skin layer, omitting the design of the reflection structure in the display film, reducing the process of laminating the display film with the honeycomb support plate, improving the reliability of the projection screen, simplifying the processing technology of the projection screen, and having good skin stiffness of the first skin layer, improving the warping after the lamination of multiple polyethylene terephthalate (PET) films and the flatness of the film, as well as the expansion and contraction problems under different temperature environmental conditions; in addition, since the first skin layer is not directly exposed, the scratching of the display film is reduced. Generally speaking, the deformation problem of the display film is improved, the production process of the projection screen is reduced, the cost is lowered, and the production process is simplified.

[0010] Based on the above technical solutions, the present invention can be further improved as follows.

[0011] In some alternative embodiments, the support structure and the display film are an integral part.

[0012] In some alternative embodiments, the skin layer is an aluminum skin layer.

[0013] In some alternative embodiments, the display film further includes a Fresnel microstructure layer, and the Fresnel microstructure layer is disposed on the first skin layer.

[0014] In some alternative embodiments, the first skin layer is engraved with a Fresnel microstructure to form the Fresnel microstructure layer.

[0015] In some alternative embodiments, the Fresnel microstructure layer is pasted on the first skin layer.

[0016] In some alternative embodiments, the display film further includes a light-resistant layer, a coloring layer, and a diffusion layer;

[0017] Along the direction facing the honeycomb core, the light-resistant layer, the coloring layer, the diffusion layer, the Fresnel microstructure layer, and the first skin layer are sequentially disposed.

[0018] In some alternative embodiments, at least one of the interfaces between the light-resistant layer and the coloring layer, between the coloring layer and the diffusion layer, and between the diffusion layer and the Fresnel microstructure layer is provided with an adhesive layer.

[0019] In a second aspect, the present invention further provides a projection screen, including:

[0020] A display film having a projection light-receiving surface;

[0021] A support structure having a skin layer, and the skin layer facing the display film is used to reflect the light entering the projection light-receiving surface.

[0022] In a third aspect, the present invention further provides a projection system, including a projection device and the above-mentioned projection screen, and the projection device is configured to project a projection image onto the projection screen.

[0023] The projection screen and the projection system provided by the present invention, the projection system includes a projection device and a projection screen, and the projection device is configured to project a projection image onto the projection screen; wherein, the projection screen includes: a display film, the display film has a projection light-receiving surface; a support structure, the support structure includes a honeycomb support plate, the honeycomb support plate includes a honeycomb core, and both opposite end faces of the honeycomb core have skin layers, the skin layer includes a first skin layer, the display film is fixedly connected to the first skin layer, the first skin layer faces the side of the display film, and is configured to reflect the light entering the projection light-receiving surface.

[0024] By using the material of the first skin layer in the honeycomb core to reflect the light entering the projection light-receiving surface, the display film can be directly fixed on the first skin layer, omitting the design of the reflection structure in the display film, reducing the process of laminating the display film and the honeycomb support plate, improving the reliability of the projection screen, simplifying the processing technology of the projection screen, and the first skin layer has good skin stiffness, improving the warping after lamination of multi-layer polyethylene terephthalate (PET) films and the flatness of the film, as well as the expansion and contraction problems under different temperature environment conditions; in addition, since the first skin layer is not directly exposed, the scratching of the display film is reduced. Generally speaking, the deformation problem of the display film is improved and the production process of the projection screen is reduced, the cost is reduced, and the production process is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 is an exploded view of a projection screen in the prior art;

[0027] Figure 2 is a cross-sectional view of a projection screen in the prior art;

[0028] Figure 3 is a cross-sectional view of another projection screen in the prior art;

[0029] Figure 4 is a cross-sectional view of a part of the projection screen provided by the embodiment of the present application;

[0030] Figure 5 A cross-sectional view of a projection screen provided by an embodiment of the present application;

[0031] Figure 6 An exploded view of a projection screen provided by an embodiment of the present application;

[0032] Figure 7 A cross-sectional view of another part of a projection screen provided by an embodiment of the present application;

[0033] Figure 8 A cross-sectional view of another projection screen provided by an embodiment of the present application;

[0034] Figure 9 An exploded view of another projection screen provided by an embodiment of the present application;

[0035] Figure 10 A schematic structural diagram of a projection system provided by an embodiment of the present application.

[0036] Explanation of reference numerals:

[0037] 100 - Projection screen;

[0038] 110 - Display film;

[0039] 111 - Anti - light layer;

[0040] 112 - Coloring layer;

[0041] 113 - Diffusion layer;

[0042] 114 - Fresnel microstructure layer;

[0043] 115 - Reflective layer;

[0044] 120 - Support structure;

[0045] 121 - Honeycomb support plate;

[0046] 1211 - Honeycomb core;

[0047] 12111 - First skin layer;

[0048] 12112 - Second skin layer;

[0049] 130 - Adhesive layer;

[0050] 131 - First adhesive layer;

[0051] 132 - Second adhesive layer;

[0052] 133 - Third adhesive layer;

[0053] 134 - Fourth adhesive layer;

[0054] 140 - Frame;

[0055] 200 - Projection system;

[0056] 210 - Projection device. Detailed implementation manners

[0057] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. All other embodiments obtained shall fall within the protection scope of the present invention. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0058] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0059] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0060] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0061] Figure 1 is an exploded view of a prior art projection screen, Figure 2 is a sectional view of a prior art projection screen, Figure 3 is a sectional view of another prior art projection screen. As Figures 1 to 3 shown, currently, the display film basically consists of a light-resistant layer 111, a coloring layer 112, a diffusion layer 113, a Fresnel microstructure layer 114, and a reflective layer 115. The light emitted by the ultra-short throw projector is refracted through the surface of the display film and enters the film layer, and is reflected by the Fresnel microstructure layer 114 and the reflective layer 115 coated on the back and then exits from the screen and finally enters the human eye. In order to support the display film, the display film is assembled with a honeycomb support plate 121 and then assembled with a frame 140.

[0062] However, the compounding of the multi-functional layers in the existing display film results in a complex production process and a low yield. The expansion and contraction rates of different materials of each functional layer are different, resulting in different environmental adaptabilities. When the environment changes, the screen is prone to deformation, and the different stresses of each layer will cause the film to warp during the production process, resulting in image distortion.

[0063] In order to overcome the defects in the prior art, the projection screen and projection system provided by the present invention utilize the material of the first skin layer in the honeycomb core to reflect the light entering the light-receiving surface of the projection, so that the display film can be directly fixed on the first skin layer, omitting the design of the reflective structure in the display film, reducing the process of laminating the display film with the honeycomb support plate, improving the reliability of the projection screen, simplifying the processing technology of the projection screen, and the first skin layer has good skin stiffness, improving the warping and flatness of the multi-layer polyethylene terephthalate (PET) film composite, as well as the expansion and contraction problems under different temperature environmental conditions; in addition, since the first skin layer is not directly exposed, the scratching of the display film is reduced. Generally speaking, the deformation problem of the display film is improved, the production process of the projection screen is reduced, the cost is reduced, and the production process is simplified.

[0064] The content of the present invention will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can understand the content of the present invention more clearly and in detail.

[0065] Figure 4 It is a cross-sectional view of a part of a projection screen provided by an embodiment of the present application. Figure 5 It is a cross-sectional view of a projection screen provided by an embodiment of the present application. Figure 6 It is an exploded view of a projection screen provided by an embodiment of the present application.

[0066] As Figures 4 to 6 shown, an embodiment of the present application provides a projection screen 100, including:

[0067] A display film 110, the display film 110 has a projection light-receiving surface;

[0068] A support structure 120, the support structure 120 includes a honeycomb support plate 121, the honeycomb support plate 121 includes a honeycomb core 1211, both opposite end faces of the honeycomb core 1211 have skin layers, the skin layer includes a first skin layer 12111, the display film 110 is fixedly connected to the first skin layer 12111, the first skin layer 12111 faces the side of the display film 110, and is used for reflecting the light entering the projection light-receiving surface.

[0069] Through the above settings, that is, by using the material of the first skin layer 12111 in the honeycomb core 1211 to reflect the light entering the projection light-receiving surface, the display film 110 can be directly fixed on the first skin layer 12111, omitting the design of the reflection structure in the display film 110, reducing the process of fitting the display film 110 and the honeycomb support plate 121, improving the reliability of the projection screen 100, simplifying the processing technology of the projection screen 100, and the first skin layer 12111 has good skin stiffness, improving the warping after the composite of multi-layer polyethylene terephthalate (PET) films and the flatness of the film, as well as the expansion and contraction problems under different temperature environment conditions; in addition, since the first skin layer 12111 is not directly exposed, the scratch of the display film 110 is reduced. Generally speaking, the problems of the display film 110 are improved and the production process of the projection screen 100 is reduced, the cost is reduced, and the production process is simplified.

[0070] It should be noted that each structure will be specifically described below.

[0071] It can be understood that the front surface of the display film 110 is the projection light-receiving surface, and the display film 110 is used to receive the image light beam and present the projection picture.

[0072] It should be noted that the display diaphragm 110 is the core component of the projection screen 100. The microstructure inside the display diaphragm 110 can reflect the light emitted by the projection device 210 at a certain reflection angle, and at the same time, it can also offset the interference of ambient light on the screen brightness.

[0073] It should be noted that due to the insufficient rigidity of the display diaphragm 110 itself, it is necessary to be supported by the honeycomb support plate 121 to meet the basic flatness requirements of the projection screen 100.

[0074] Specifically, the honeycomb support plate 121 can support the display diaphragm 110 in the projection screen 100, prevent the display diaphragm 110 from collapsing in the center, and improve the stability of the projection screen 100.

[0075] In some embodiments, the display diaphragm 110 and the honeycomb support plate 121 need to be bonded by a double-sided adhesive foam tape. The foam tape is a general term for a double-sided adhesive tape with a foam substrate, mainly made of EVA or PE foam as the substrate, and coated with a solvent-based pressure-sensitive adhesive on both sides, which has shock-absorbing and sealing effects.

[0076] Specifically, other microstructure layers on the display diaphragm 110 can be adhesively connected to the first skin layer 12111 through a double-sided adhesive foam tape.

[0077] In addition, it should be noted that along the thickness direction of the honeycomb core 1211, both opposite end faces of the honeycomb core 1211 have skin layers, and the skin layers include a first skin layer 12111 and a second skin layer 12112. Among them, the first skin layer 12111 faces the side of the display diaphragm 110 and is adhesively fixed to the display diaphragm 110 through an adhesive. Correspondingly, the second skin layer 12112 faces away from the side of the display diaphragm 110.

[0078] It should be noted that the first skin layer 12111 is used to reflect the light entering the projection light-receiving surface. That is to say, the first skin layer 12111 can be regarded as a reflection structure, which can reduce the overall structure of the projection screen 100 and has a simple structure while ensuring the projection effect of the projection screen 100.

[0079] Among them, the first skin layer 12111 may be used as part of an optical coating to change the surface characteristics of the optical device. This may include controlling the transmission, reflection, and absorption characteristics of light to meet specific optical requirements.

[0080] The first skin layer 12111 and the honeycomb core 1211 can ensure the flatness of the display diaphragm 110 to ensure the optical effect. The honeycomb core 1211 can weaken the thermal expansion of the projection screen 100 and has excellent properties such as light weight, high strength, high stiffness, resistance to high wind pressure, shock absorption, sound insulation, heat insulation, flame retardancy, and high specific strength.

[0081] In some alternative embodiments, the support structure 120 and the display diaphragm 110 are an integral part.

[0082] It should be noted that such a setting can avoid the existing situation where the support structure 120 and the display diaphragm 110 are two independent structures respectively. While reducing the processes, it can improve the strength of the entire projection screen 100.

[0083] That is to say, the first skin layer 12111 in the support structure 120 directly replaces the reflection structure in the existing display diaphragm 110, thereby reducing the structure of the display diaphragm 110 and making the support structure 120 and the display diaphragm 110 an integral part.

[0084] In some alternative embodiments, the skin layer is an aluminum skin layer.

[0085] It should be noted that aluminum has high reflection performance. Therefore, using an aluminum skin in an optical mirror may be an option. This can be used to manufacture reflectors or reflective surfaces for focusing light beams or reflecting light rays.

[0086] In addition, it should be noted that the first skin layer 12111 is often made of an aluminum plate. The above honeycomb support plate 121 is an aluminum honeycomb core 1211 or a polypropylene (PP) honeycomb core 1211, which has a low cost and high strength.

[0087] Specifically, the PET material is relatively soft and has poor stiffness. If a single-layer or double-layer PET scheme is adopted, the overall display diaphragm 110 is relatively thin, and wrinkles are likely to occur during lamination, affecting the flatness. If the aluminum skin is used as the reflection functional layer, the aluminum skin has better stiffness than the PET film. Even if the thickness of the display diaphragm 110 is reduced, it can still have good operability.

[0088] The deformation of the display diaphragm 110 caused by the composite of the multi-functional layer is due to the different expansion and contraction rates of the materials of each functional layer, resulting in different environmental adaptabilities. The screen is prone to deformation when the environment changes. And if the display diaphragm 110 is to be thinned, each functional layer of PET needs to be thinned, so it is prone to deformation during lamination. The aluminum skin has better stiffness than the PET film. Even if the film thickness is reduced, it can still have good operability.

[0089] Since the deflection of the aluminum skin is better than that of the PET film, the stress generated in the roll to roll process will not be manifested after the composite of the multi-functional layer; and using the aluminum skin as the reflection structure and the base material can be produced by sheet materials, completely avoiding the lamination stress, and the display diaphragm 110 is flat and wrinkle-free after production.

[0090] The roll-to-roll process is a two-roll production process that combines a core-to-core winding machine with a coating machine or a laminating machine for continuous production.

[0091] Flexibility refers to the property of an object that deforms under force and cannot return to its original shape after the acting force is removed. The flexibility of the aluminum skin is better than that of PET, and the flexibility of the aluminum skin is inversely proportional to its thickness. Therefore, using a thinner material can increase the flexibility of the aluminum profile.

[0092] Good flexibility means good recovery ability under force, and the fitting stress caused by the roll-to-roll process resulting in film warping will be improved.

[0093] In some alternative embodiments, the display film 110 further includes a Fresnel microstructure layer 114, and the Fresnel microstructure layer 114 is disposed on the first skin layer 12111.

[0094] The Fresnel microstructure layer 114 changes the refraction of light through the arrangement of microstructures, thereby achieving the effect of focusing, and is used to adjust the focal length, scattering or focusing of light. The distribution and refraction of light can be controlled through the design of microstructures to improve the viewing experience.

[0095] The Fresnel microstructure layer 114 can reflect the light emitted by the laser projection device in a specific direction. In this way, it can be ensured that the light reflected by the Fresnel microstructure layer 114 can reach the user's eyes to the greatest extent, enabling the user to view a clearer picture.

[0096] It should be noted that the Fresnel microstructure layer 114 can be adhered to the first skin layer 12111 by sticking, that is, a double-sided adhesive foam tape. The foam tape is a general term for double-sided adhesive tapes with a foam substrate, mainly made of EVA or PE foam as the substrate, and coated with a solvent-based pressure-sensitive adhesive on both sides, having shock-absorbing and sealing functions.

[0097] Or the Fresnel microstructure layer 114 can be disposed by engraving on the first skin layer 12111. Specifically, there is no excessive limitation here.

[0098] As Figures 4 to 6 shown, in some alternative embodiments, the Fresnel microstructure is engraved on the first skin layer 12111 to form the Fresnel microstructure layer 114.

[0099] It should be noted that the Fresnel microstructure is directly engraved on the surface of the first covering layer 12111 as the Fresnel microstructure layer 114, and then the display film 110 is produced by a composite process. Since the first covering layer 12111 is produced by a calendering process, compared with the existing spraying process of the reflective structure in the film, the uniformity of the reflective structure is better and the thickness is controllable; moreover, the first covering layer 12111 has a certain rigidity compared with the PET film, and even if the thickness of the display film 110 is reduced, it can still have better operability.

[0100] It should be noted that other functional layers are compounded on the surface of the first covering layer 12111 with the Fresnel microstructure, and finally the first covering layer 12111 with optical functions is produced, and then it is compounded with the honeycomb core 1211 and the second covering layer 12112 without microstructure on the other side to produce the integrated plate-shaped projection screen 100 with optical effects.

[0101] Figure 7 This is a cross-sectional view of another part of the projection screen provided by the embodiment of the present application. Figure 8 This is a cross-sectional view of another projection screen provided by the embodiment of the present application. Figure 9 This is an exploded view of another projection screen provided by the embodiment of the present application.

[0102] As Figures 7 to 9 shown, in some alternative embodiments, the Fresnel microstructure layer 114 is adhered to the first covering layer 12111.

[0103] It should be noted that since the surface of the first covering layer 12111 produced by the calendering process is not completely flat and has certain defects, if the Fresnel microstructure is directly engraved, the light projected by the host will be reflected in an irregular path at the defects, affecting the optical effect; therefore, in order to make up for the defects, first, an optical adhesive is coated on the surface of the first covering layer 12111 to process the Fresnel microstructure layer 114, and then the multi-functional layer is compounded.

[0104] As Figures 4 to 9 shown, in some alternative embodiments, the display film 110 further includes a light-resistant layer 111, a coloring layer 112, and a diffusion layer 113;

[0105] Along the direction facing the honeycomb core 1211, the light-resistant layer 111, the coloring layer 112, the diffusion layer 113, the Fresnel microstructure layer 114, and the first covering layer 12111 are arranged in sequence.

[0106] It should be noted that the incident light enters from the anti-scratch anti-light layer 111, passes through the coloring layer 112 and the diffusion layer 113 to improve the transmittance and contrast of the display film 110, disperse the propagation of light, enters the Fresnel microstructure layer 114, and reflects the light out through the first cover layer 12111, and an image is displayed on the anti-light layer 111.

[0107] It should be noted that the cross-section of the Fresnel microstructure layer 114 is a continuous triangular serrated texture structure close to 90°. The coloring layer 112 is generally gray or light black, etc., which can greatly improve the projection display contrast, and the diffusion layer 113 can effectively improve the viewing angle.

[0108] Exemplarily, the diffusion layer 113 may include a diffusion substrate layer and diffusion particles uniformly disposed in the diffusion substrate layer. The diffusion particles may be polymethyl methacrylate (PMMA) particles or spherical silicone. Through the above settings, the viewing angle of the screen can be effectively improved.

[0109] Exemplarily, the coloring layer 112 includes a coloring base layer and dark dyes uniformly disposed in the coloring base layer. The above dark dyes are generally organic dyes, and azo dyes, phthalocyanine dyes, etc. can be selected. Through the above settings, the contrast of the screen can be effectively increased.

[0110] As Figures 4 to 9 shown, in some alternative embodiments, an adhesive layer 130 is provided between at least one of the anti-light layer 111 and the coloring layer 112, the coloring layer 112 and the diffusion layer 113, and the diffusion layer 113 and the Fresnel microstructure layer 114.

[0111] It should be noted that adhesive layers 130 may be provided between the anti-light layer 111 and the coloring layer 112, between the coloring layer 112 and the diffusion layer 113, and between the diffusion layer 113 and the Fresnel microstructure layer 114.

[0112] In some embodiments, the adhesive layer 130 may further include a first adhesive layer 131, a second adhesive layer 132, and a third adhesive layer 133.

[0113] Exemplarily, a first adhesive layer 131 is provided between the anti-light layer 111 and the coloring layer 112, that is to say, the anti-light layer 111 and the coloring layer 112 are bonded through the first adhesive layer 131.

[0114] Exemplarily, a second adhesive layer 132 is provided between the coloring layer 112 and the diffusion layer 113, that is to say, the coloring layer 112 and the diffusion layer 113 are bonded through the second adhesive layer 132.

[0115] Exemplarily, a third adhesive layer 133 is provided between the diffusion layer 113 and the Fresnel microstructure layer 114, that is to say, the diffusion layer 113 and the Fresnel microstructure layer 114 are bonded through the third adhesive layer 133.

[0116] In an embodiment of the present invention, the first adhesive layer 131, the second adhesive layer 132, and the third adhesive layer 133 may include a double-sided adhesive layer with a PE foam substrate, a double-sided adhesive layer with a PET substrate. The first adhesive layer 131, the second adhesive layer 132, and the third adhesive layer 133 may also include a hot melt adhesive layer and a silicone adhesive layer. Specifically, the embodiments of the present application do not limit this too much here.

[0117] In addition, it should be noted that the adhesive layer 130 may further include a fourth adhesive layer 134. When the Fresnel microstructure layer 114 is disposed on the first skin layer 12111 in a pasted form, a fourth adhesive layer 134 is provided between the Fresnel microstructure layer 114 and the first skin layer 12111, that is to say, the Fresnel microstructure layer 114 and the first skin layer 12111 are bonded through the fourth adhesive layer 134.

[0118] Of course, when the Fresnel microstructure is a Fresnel microstructure layer 114 formed by engraving on the first skin layer 12111, the fourth adhesive layer 134 can be cancelled. Specifically, the embodiments of the present application do not elaborate too much here.

[0119] In some embodiments, the first adhesive layer 131, the second adhesive layer 132, the third adhesive layer 133, and the fourth adhesive layer 134 may be adhesives such as glue, adhesive film, or double-sided tape. The thickness range of the first adhesive layer 131, the second adhesive layer 132, the third adhesive layer 133, and the fourth adhesive layer 134 may be from 0.1 mm to 1 mm. For example, the thickness of the first adhesive layer 131, the second adhesive layer 132, the third adhesive layer 133, and the fourth adhesive layer 134 may be 0.5 mm.

[0120] Specifically, referring to Figure 2 and Figure 3 , the projection screen 100 in the existing structure requires at least 5 adhesive layers 130.

[0121] Referring to Figures 4 to 9, the solution provided by this application only requires at most three or four adhesive layers 130. For example, when the Fresnel microstructure is a Fresnel microstructure layer 114 formed by engraving on the first skin layer 12111, only the first adhesive layer 131, the second adhesive layer 132, and the third adhesive layer 133 are needed; when the Fresnel microstructure layer 114 is arranged on the first skin layer 12111 in a pasted form, only the first adhesive layer 131, the second adhesive layer 132, the third adhesive layer 133, and the fourth adhesive layer 134 are needed. Obviously, the number of adhesive layers 130 is reduced, the process of laminating the display film 110 and the honeycomb support plate 121 is reduced, and the whole structure is simple.

[0122] The projection screen provided by the embodiment of this application includes a display film, and the display film has a light-receiving surface for projection; a support structure, the support structure includes a honeycomb support plate, the honeycomb support plate includes a honeycomb core, and both opposite end faces of the honeycomb core have skin layers, the skin layer includes a first skin layer, the display film is fixedly connected to the first skin layer, and the first skin layer faces the side of the display film and is used for reflecting the light entering the light-receiving surface for projection.

[0123] By using the material of the first skin layer in the honeycomb core to reflect the light entering the light-receiving surface for projection, the display film can be directly fixed on the first skin layer, omitting the design of the reflection structure in the display film, reducing the process of laminating the display film and the honeycomb support plate, improving the reliability of the projection screen, simplifying the processing technology of the projection screen, and the first skin layer has good skin stiffness, improving the warping after the lamination of multiple polyethylene terephthalate (PET) films and the flatness of the film, as well as the expansion and contraction problems under different temperature environmental conditions; in addition, since the first skin layer is not directly exposed, the scratching of the display film is reduced. Generally speaking, the deformation problem of the display film is improved, the production process of the projection screen is reduced, the cost is reduced, and the production process is simplified.

[0124] In addition, as Figures 4 to 9 shown, the embodiment of this application also provides a projection screen 100, including:

[0125] A display film 110, the display film 110 has a light-receiving surface for projection;

[0126] A support structure 120, the support structure 120 has a skin layer, and the skin layer facing the display film 110 is used for reflecting the light entering the light-receiving surface for projection.

[0127] The projection screen provided by the embodiment of the present application utilizes the material of the first skin layer in the honeycomb core to reflect the light entering the light-receiving surface of the projection, so that the display film can be directly fixed on the first skin layer, omitting the design of the reflection structure in the display film, reducing the process of laminating the display film with the honeycomb support plate, improving the reliability of the projection screen, simplifying the processing technology of the projection screen, and having good skin stiffness of the first skin layer, improving the warping after the lamination of multiple polyethylene terephthalate (PET) films and the flatness of the film, as well as the expansion and contraction problems under different temperature environmental conditions; in addition, since the first skin layer is not directly exposed, the scratching of the display film is reduced. Generally speaking, the deformation problem of the display film is improved, the production process of the projection screen is reduced, the cost is reduced, and the production process is simplified.

[0128] In addition, Figure 10 is a schematic structural diagram of the projection system provided by the embodiment of the present application. As Figures 4 to 10 shown, the embodiment of the present application also provides a projection system 200, including a projection device and the above-mentioned projection screen 100, and the projection device is used to project a projection image onto the projection screen 100.

[0129] It should be noted that the outgoing light of the projection device 210 enters from the anti-scratch function anti-light layer 111, passes through the coloring layer 112 and the diffusion layer 113 to improve the transmittance and contrast of the display film 110, disperse the propagation of light, enters the Fresnel microstructure layer 114, and reflects the light out through the first skin layer 12111, and displays an image on the anti-light layer 111 for users to view.

[0130] The projection system 200 provided by this embodiment specifically includes a projection device and the projection screen 100 in the foregoing embodiment, and the projection device is used to project a projection image onto the display film 110 of the projection screen 100.

[0131] Specifically, in the projection system 200 of this embodiment, the projection device 210 can be various existing projectors, such as a laser projector. The projection device 210 can project a projection image onto the display film 110 of the projection screen 100, so that the display film 110 can display the projection image for people to view.

[0132] For the projection system 200 provided by this embodiment, the specific structure, working principle and function of the projection screen 100 have been described in detail in the foregoing Embodiment 1, and will not be elaborated here.

[0133] By utilizing the material of the first skin layer in the honeycomb core to reflect the light entering the projection light-receiving surface, the display film can be directly fixed on the first skin layer, omitting the design of the reflection structure in the display film, reducing the process of laminating the display film with the honeycomb support plate, improving the reliability of the projection screen, simplifying the processing technology of the projection screen, and having good skin stiffness of the first skin layer, which improves the warping after the lamination of multiple polyethylene terephthalate (PET) films and the flatness of the film, as well as the expansion and contraction problems under different temperature environmental conditions; in addition, since the first skin layer is not directly exposed, the scratching of the display film is reduced. Generally speaking, the deformation problem of the display film is improved, the production process of the projection screen is reduced, the cost is lowered, and the production process is simplified.

[0134] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0135] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A projection screen, characterized in that, Comprising: A display diaphragm having a projection light-receiving surface; A support structure including a honeycomb support plate, the honeycomb support plate including a honeycomb core, opposite end faces of the honeycomb core each having a skin layer, the skin layer including a first skin layer, the display diaphragm being fixedly connected to the first skin layer, the first skin layer facing the side of the display diaphragm and being configured to reflect light entering the projection light-receiving surface.

2. The projection screen according to claim 1, characterized in that, The support structure and the display diaphragm are an integral part.

3. The projection screen according to claim 2, characterized in that, The skin layer is an aluminum skin layer.

4. The projection screen according to any one of claims 1-3, characterized in that, The display diaphragm further includes a Fresnel microstructure layer disposed on the first skin layer.

5. The projection screen according to claim 4, characterized in that, Fresnel microstructures are engraved on the first skin layer to form the Fresnel microstructure layer.

6. The projection screen according to claim 4, characterized in that, The Fresnel microstructure layer is adhered to the first skin layer.

7. The projection screen according to claim 4, characterized in that, The display diaphragm further includes a light-resistant layer, a coloring layer, and a diffusion layer; Along the direction facing the honeycomb core, the light-resistant layer, the coloring layer, the diffusion layer, the Fresnel microstructure layer, and the first skin layer are sequentially arranged.

8. The projection screen according to claim 7, characterized in that, A bonding layer is provided between at least one of the light-resistant layer and the coloring layer, the coloring layer and the diffusion layer, and the diffusion layer and the Fresnel microstructure layer.

9. A projection screen, characterized in that, Comprising: A display diaphragm having a projection light-receiving surface; A support structure having a skin layer, the skin layer facing the display diaphragm being configured to reflect light entering the projection light-receiving surface.

10. A projection system, characterized in that, A projection device and a projection screen including any one of claims 1-9, the projection device being configured to project a projection image onto the projection screen.

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