Photon diaphragm and transparent projection display glass

Abstract

A photon diaphragm (6) and a transparent projection display glass wherein the photon diaphragm (6) is cut into at least two parts wherein the spherical surface ratio of any part is not greater than a threshold. The transparent projection display glass comprises first outer glass (4), a first bonding layer (5), a photon diaphragm (6), a second bonding layer (7) and second outer glass (8) which are stacked in sequence. The photon diaphragm (6) can be well attached to other diaphragms, and the wrinkle phenomenon caused by the large-curvature profile of the photon diaphragm (6) is greatly weakened. According to the transparent projection display glass, the photon diaphragm (6) is adopted, so that on the premise of ensuring the projection effect, the phenomenon that the edge part is seriously wrinkled after lamination due to poor ductility of the photon diaphragm (6) in the transparent projection display glass can be greatly reduced.

Description

Photon diaphragm and transparent projection display glass Technical Field

[0001] The present invention relates to the technical field of special glass products, in particular to the technical field of laminating a photon film to glass, and specifically to a photon film and a transparent projection display glass. Background Art

[0002] In the prior art, there exists a photonic film that can be used for both projection display and light propagation. This film utilizes an artificial microstructure formed by a periodic arrangement of media with different refractive indices, leveraging its high reflectivity in the visible light band to improve display performance. However, existing photonic films have poor ductility and can only be used for glass products with relatively flat surfaces. For larger glass products (spherical ratio ≥ 35), using a whole sheet of projection photonic film for production can lead to severe wrinkling at the edges of the film after assembly. This phenomenon significantly affects the aesthetics and light transmittance of products using the photonic film, and thus the projection imaging effect.

[0003] Summary of the Invention

[0004] In response to the problems in the prior art, the photon film provided by the present invention can be well bonded with other films and greatly weaken the wrinkling phenomenon caused by the large curvature surface of the photon film; in addition, the transparent projection display glass provided by the present invention, by adopting the above-mentioned photon film, can greatly reduce the severe wrinkling of the edges after the sheets are assembled due to the poor ductility of the internal photon film, while ensuring the projection effect.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a photonic membrane, which is cut into at least two parts, wherein the spherical ratio of any part is not greater than a threshold.

[0007] In one embodiment, the spacing between adjacent parts after cutting is a set distance.

[0008] In one embodiment, connection points are provided between adjacent parts after cutting.

[0009] In one embodiment, the length of the connection point is 5 mm to 10 mm.

[0010] In one embodiment, the connection point satisfies the following relationship: 0.1%≤w×s / (Lw×n)×s≤5%;

[0011] Wherein: w is the length of the connection point, n is the number of connection points, L is the length in the cutting direction, and s is the spacing between the adjacent parts.

[0012] In one embodiment, the number of the connection points is 4 to 5.

[0013] In one embodiment, the distance between adjacent parts is no greater than 2 mm.

[0014] In one embodiment, the distance between adjacent parts is 50 μm to 1 mm.

[0015] In one embodiment, the threshold value ranges from 0.02 to 0.035.

[0016] On the other hand, the present invention further provides a transparent projection display glass manufactured using the above-mentioned photonic film, the transparent projection display glass comprising:

[0017] The first outer glass, the first bonding layer, the above-mentioned photon film, the second bonding layer and the second outer glass are stacked in sequence.

[0018] In a third aspect, the present invention further provides an automobile, comprising a bright projection display glass for installation on at least one of a sunroof, a side window, a front windshield, and a rear windshield of the automobile.

[0019] As can be seen from the above description, an embodiment of the present invention provides a photon film and a transparent projection display glass. The corresponding photon film is cut into at least two parts, wherein the spherical ratio of any part is not greater than a threshold value. The corresponding transparent projection display glass includes: a first outer glass, a first adhesive layer, a photon film, a second adhesive layer and a second outer glass stacked in sequence. The photon film provided by the present invention can be well bonded with other films, and greatly weakens the wrinkling phenomenon caused by the problem of large curvature surface of the photon film; in addition, the transparent projection display glass provided by the present invention, by adopting the above-mentioned photon film, can greatly reduce the serious wrinkling of the edge after the lamination caused by the poor ductility of the internal photon film under the premise of ensuring the projection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] FIG1 is a schematic diagram of the working principle of a transparent projection film product according to an embodiment of the present invention;

[0022] FIG2 is a schematic diagram of a wrinkle defect in an embodiment of the present invention;

[0023] FIG3 is a schematic structural diagram of a photon diaphragm in an embodiment of the present invention;

[0024] FIG4 is a schematic diagram of the vertical spherical ratio in an embodiment of the present invention;

[0025] FIG5 is a schematic diagram of the horizontal spherical ratio in an embodiment of the present invention;

[0026] FIG6 is a schematic diagram of a photon membrane before cutting (horizontal spherical ratio) in an embodiment of the present invention;

[0027] FIG7 is a schematic diagram of a photon membrane after cutting (horizontal spherical ratio) in an embodiment of the present invention;

[0028] FIG8 is a schematic diagram of the connection point positions in an embodiment of the present invention (not completely cut);

[0029] FIG9 is a schematic structural diagram of a connection point in an embodiment of the present invention;

[0030] FIG10 is a first structural diagram of a transparent projection display glass according to an embodiment of the present invention;

[0031] FIG. 11 is a second structural diagram of the transparent projection display glass according to an embodiment of the present invention.

[0032] Figure numbers: 1: projector; 2: transparent projection film; 3: external image; 4: first outer glass; 5: first bonding layer; 6: photon membrane; 6-1: first part of photon membrane; 6-2: second part of photon membrane; 7: second bonding layer; 8: second outer glass. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention. Obviously, the described embodiments are only embodiments of a part of the present application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0034] The working principle of the film in the existing technology that has both transparent function and projection display function (using the artificial microstructure formed by the periodic arrangement of media with different refractive indices to achieve high reflective effect in the visible light band to improve display performance) is shown in Figure 1. The user can observe the image projected by the projector 1 through the transparent projection film 2, and can also observe the external image 3 through it. It is increasingly used in various scenes and can provide the audience with excellent visual experience and shocking effects.

[0035] However, during the manufacturing process of the aforementioned product, due to the poor ductility of the core film inside - the photonic film, when it is laminated with other films, severe wrinkles often appear on the edges after the film is assembled (see Figure 2), which greatly affects the aesthetics and light transmission effect of the product.

[0036] Based on the above technical pain points, referring to FIG3 , first, an embodiment of the present invention provides a photonic membrane, which is divided into at least two parts, wherein the spherical ratio of any part is not greater than a threshold.

[0037] It can be understood that the gap between adjacent parts of the separated photon membrane can act as an "air channel", thereby reducing and weakening the phenomenon of severe wrinkles on the edges after the photon membrane is assembled. However, if the gap is too large, although it is helpful to solve the "wrinkle" problem, there will be dark lines in the middle of the projected image observed by the human eye after the assembly, which is not conducive to aesthetics and affects the projection effect; on the other hand, if the gap is too small, although it is conducive to aesthetics (that is, the human eye will not observe dark lines in the projected image after assembly), it is not conducive to air conduction and is very likely to cause "wrinkles". Therefore, the gap width here needs to be reasonably determined by technical personnel in this field through experiments.

[0038] Referring to Figure 4 , the spherical ratio here refers to the dimensionless ratio of the height of the cross-section to the distance between the ends of the cross-section when the photonic membrane is cut along one direction. For example, the spherical ratio in the figure is 125.2mm / 1698.3mm=0.0737. It should be noted that the spherical ratio of the same photonic membrane in different directions may also be different. Specifically, referring to Figures 4 and 5 , Figure 4 shows a vertical cut of the photonic membrane, and its spherical ratio is V1=125.2mm / 1698.3mm=0.0737; Figure 5 shows a horizontal cut of the photonic membrane, and its spherical ratio is H1=44.35mm / 1453.5mm=0.0305. In addition, even in the same direction, the spherical ratios of different parts of the photon membrane may be different. Referring to FIG. 6 , the spherical ratio of the end portion is 44.35 mm / 1453.5 mm=0.035, while the spherical ratio of the middle portion is 42.407 mm / 1367.299 mm=0.031.

[0039] During the actual construction, precision cutting equipment can be used to cut the outline of the photon diaphragm, and several connection points can be selected at intervals in the middle. This can achieve the purpose of reducing wrinkle defects or even avoiding wrinkle defects after the photon diaphragm is assembled, and can also ensure that the diaphragm gap is small.

[0040] It can be understood that after the photonic membrane is cut, the spherical ratio of any part of it must be smaller than the spherical surface of the photonic membrane before it is cut. By utilizing this property (and controlling the distance between adjacent parts of the photonic membrane after cutting), the photonic membrane can be better bonded to other membranes.

[0041] FIG7 is a schematic diagram of a portion of the photonic film in FIG6 after it has been cut along the cutting line (dash-dotted line) in the figure; its horizontal spherical ratio H2 is recalculated to be 10.5 mm / 727.7 mm = 0.0144 (the vertical spherical ratio does not change at this time, i.e., when the photonic film is cut vertically, its horizontal spherical ratio decreases; similarly, when the photonic film is cut horizontally, its vertical spherical ratio decreases). It can be seen that the horizontal spherical ratio after cutting is significantly reduced (from 0.0305 to 0.0144). After actual bonding operations, the horizontal spherical ratio at this time fully meets the process requirements for stacking the photonic film with its adjacent films, and greatly reduces the wrinkling phenomenon caused by the large curvature of the photonic film.

[0042] In one embodiment, the spacing between adjacent parts after cutting is a set distance. It is understood that the set distance should not be too large, so as to make it difficult for the naked eye to detect the visual defects caused by the gaps at the joints of the cut photonic membranes, thereby ensuring the projection imaging effect.

[0043] In one embodiment, referring to FIG8 , connection points (shown as black dots in the figure) are provided between adjacent parts after cutting.

[0044] The photonic film provided in the embodiment of the present invention has two cutting methods: complete cutting and incomplete cutting. Complete cutting is to completely cut through adjacent photonic film parts so that any adjacent parts are completely separated.

[0045] Incomplete segmentation, connection points are set between adjacent photon membrane parts (connected by threads). It should be noted that the incomplete cutting here does not mean cutting less than the thickness of the membrane, but leaving connection points along the cutting direction.

[0046] In one embodiment, referring to FIG. 9 , the length s of the connection point is 5 mm to 10 mm.

[0047] In one embodiment, referring to FIG9 , the length, width (i.e., the distance between adjacent photonic membrane portions after cutting), number, and cutting direction length of the connection points need to satisfy the following formula: 0.1%≤w×s / (Lw×n)×s≤5%;

[0048] Where: w is the length of the connection point, n is the number of connection points, L is the length in the cutting direction, and s is the spacing between adjacent parts.

[0049] Preferably, the number of connection points is 4 to 5.

[0050] In one embodiment, the spacing between adjacent parts of the cut photonic membrane is no more than 2 mm. After many experiments, the applicant believes that a spacing of no more than 1 mm is a more optimal value. In this case, the naked eye cannot easily detect the visual defects caused by the gaps at the junction of the membranes, and the projection imaging effect of the photonic membrane can be guaranteed.

[0051] Preferably, the spacing between adjacent parts is 50 μm to 1 mm;

[0052] In one embodiment, after many experiments, the applicant believes that the above-mentioned threshold range (the spherical ratio of any part of the photonic membrane after being cut is not greater than the threshold) is more appropriate when it is 0.02 to 0.035. Preferably, the spherical ratio of any part of the photonic membrane after cutting is not greater than 0.02, which is the optimal value. At this time, it can not only meet the process requirements of stacking the photonic membrane and its adjacent membranes, but also weaken the wrinkling phenomenon caused by the large curvature surface problem of the photonic membrane.

[0053] Furthermore, other parameters of the photonic membrane provided by the embodiment of the present invention are as described in Table 1:

[0054] Table 1

[0055] From the above description, it can be seen that an embodiment of the present invention provides a photon membrane, which is cut into at least two parts, wherein the spherical ratio of any part is not greater than a threshold value. The present invention divides the original entire photon membrane into two parts by cutting and splicing the photon membrane, thereby reducing the spherical ratio in the horizontal or vertical direction to below 0.02, and combined with the restriction that the spacing between adjacent parts is ≤1mm, it is difficult for the naked eye to recognize the visual defects caused by the gap at the junction of the photon membrane, and the projection imaging effect can be guaranteed. On the other hand, the photon membrane provided by the present invention can be well bonded with other membranes, and greatly weakens the wrinkling phenomenon caused by the problem of large curvature surface of the photon membrane.

[0056] 10 , based on the above-mentioned photon film, an embodiment of the present invention further provides a transparent projection display glass, comprising: a first outer glass 4, a first adhesive layer 5, a photon film 6, a second adhesive layer 7 and a second outer glass 8 stacked in sequence.

[0057] Preferably, the first adhesive layer 5 and the second adhesive layer 7 are made of PVB intermediate film. It is understandable that the first adhesive layer 5 and the second adhesive layer 7 can also be made of other materials, such as EVA, etc., and the present application is not limited thereto.

[0058] Next, referring to Figure 11, the photon film in the transparent projection display glass provided by an embodiment of the present invention may include multiple parts (a first photon film part 6-1 and a second photon film part 6-2), and the multiple parts can be bonded with the PVB intermediate film after being cut. It can be understood that the difficulty of the bonding process of the photon film designed using this process will be greatly reduced, and under the premise of ensuring the projection effect, the phenomenon of severe wrinkles on the edge after bonding caused by the poor ductility of the internal photon film can be greatly weakened.

[0059] In one embodiment, the present invention further provides a car, comprising the above-mentioned transparent projection display glass, which is used for being installed on at least one of the car's sunroof, side windows, front windshield, and rear windshield.

[0060] The transparent projection display glass provided in the above embodiment installed on the car can provide news, entertainment videos, information reading and necessary information prompts to the passengers in the car without affecting the line of sight between the passengers and the outside of the car, that is, without affecting its function as a car window itself. It can also display certain advertisements (similar to the screen advertisements in elevators).

[0061] It is understandable that transparent projection display glass can also be used in application scenarios such as the glass of subway windows, the glass of train windows, the glass of bus windows, the glass of ship interior windows, and the glass of windows on both sides of airplane interiors.

[0062] As can be seen from the foregoing description, an embodiment of the present invention provides a transparent projection display glass comprising: a first outer glass sheet, a first adhesive layer, a photonic film, a second adhesive layer, and a second outer glass sheet stacked in sequence. The transparent projection display glass provided by the present invention, by employing the aforementioned photonic film, can significantly reduce the severe wrinkling of the edges of the glass after assembly, which can be caused by the poor ductility of the photonic film within the glass, while maintaining a good projection effect.

[0063] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0064] The descriptions with reference to the terms "one embodiment", "a specific embodiment", "some embodiments", "for example", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. The order of steps involved in each embodiment is used to schematically illustrate the implementation of the present invention, and the order of steps therein is not limited and can be appropriately adjusted as needed.

[0065] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0066] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A photonic membrane, characterized in that: The photonic membrane is cut into at least two parts, wherein the spherical ratio of any part is not greater than a threshold value; connection points are provided between adjacent parts after cutting; the spherical ratio is the ratio of the cross-section height to the distance between the two ends of the cross-section when the photonic membrane is cut along a direction.

2. The photonic membrane according to claim 1, characterized in that The spacing between adjacent parts after cutting is a set distance.

3. The photonic membrane according to claim 1, characterized in that The length of the connection point is 5 mm to 10 mm.

4. The photonic membrane according to claim 3, characterized in that The connection point satisfies the following relationship: 0.1%≤w×s / (Lw×n)×s≤5%; Wherein: w is the length of the connection point, n is the number of connection points, L is the length in the cutting direction, and s is the spacing between the adjacent parts.

5. The photonic membrane according to any one of claims 1, 3 or 4, characterized in that: The number of the connection points is 4 to 5.

6. The photonic membrane according to claim 1 or 2, characterized in that: The distance between the adjacent parts is no greater than 2 mm.

7. The photonic membrane according to claim 6, characterized in that: The interval between the adjacent parts is 50 μm to 1 mm.

8. The photonic membrane according to claim 1, wherein: The threshold range is 0.02 to 0.

035.

9. A transparent projection display glass, characterized in that: include: A first outer glass sheet, a first adhesive layer, the photon film according to any one of claims 1 to 8, a second adhesive layer and a second outer glass sheet are stacked in sequence.

10. An automobile, characterized in that: The transparent projection display glass as claimed in claim 9 is used for installation on at least one of a sunroof, a side window, a front windshield and a rear windshield of a car.

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