A double-sided display nanocrystalline film and its preparation method

Abstract

This invention discloses a double-sided display nanocrystalline film and its preparation method. The double-sided display nanocrystalline film includes: a substrate layer, a microstructure layer, and a display carrier layer; the upper surface of the microstructure layer has a fine sand structure; the lower surface of the microstructure layer is attached to the upper surface of the substrate layer; the display carrier layer includes: a front reflective layer and a back reflective layer, which are disposed opposite to each other on the fine sand structure surface, and the front and back reflective layers are discontinuous. A projector projects an image onto the surface of the double-sided display nanocrystalline film. Some light is reflected by the front reflective layer of the display carrier layer, thus displaying the image on the front side; some light is reflected by the back reflective layer, propagating the projected image through the substrate layer, thus displaying the image on the back side as well. This achieves double-sided display, effectively reducing costs and promoting green development.

Description

Technical Field

[0001] This invention relates to the field of optical projection technology, and in particular to a double-sided display nanocrystalline film and its preparation method. Background Technology

[0002] Projection technology has been widely used in work and life, such as classroom teaching, conference rooms, home projection television, and exhibition hall advertising. Most existing projection screens can only display images on one side and cannot display the projected image on both sides simultaneously. When it is necessary to display the image on both sides, two projectors and two projection screens are required, which greatly increases the material input, is not conducive to cost reduction, and is not conducive to green development.

[0003] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a double-sided display nanocrystalline film and its preparation method, so as to realize the simultaneous display of projected images on both sides, reduce costs, and achieve green development.

[0005] This invention provides a double-sided display nanocrystalline film, comprising: a substrate layer, a microstructure layer, and a display carrier layer; the substrate layer is a transparent film, and both its upper and lower surfaces are flat surfaces; the microstructure layer is a transparent film, its lower surface is flat, and its upper surface has a fine sand structure with a particle size ranging from 0.10 mm to 0.30 mm, and the height difference between the peaks and troughs of the fine sand structure not exceeding 250 μm; the lower surface of the microstructure layer is attached to the upper surface of the substrate layer; the display carrier layer comprises: a front reflective layer and a back reflective layer, which are disposed opposite to each other on the surface of the fine sand structure, and the front and back reflective layers are discontinuous; the display carrier layer is a metal film layer; the thickness of the display carrier layer ranges from 0.1 nm to 60 nm, the thickness of the substrate layer ranges from 30 μm to 100 μm, and the thickness of the microstructure layer ranges from 25 μm to 375 μm. Preferably, the substrate layer is a white semi-transparent film. Using white can improve the color contrast of the projected image and enhance the display effect.

[0006] The projector projects the image onto the surface of the double-sided display nanocrystalline film. Some of the light is reflected by the front reflective layer of the display carrier layer, thus displaying the image on the front. Since the display carrier layer does not completely cover the microstructure layer, part of the image projected by the projector enters the microstructure layer and is reflected by the back reflective layer, propagating the image through the substrate layer. This allows the image to be displayed on the back as well. Therefore, a single projector and a single double-sided display nanocrystalline film can achieve double-sided display, effectively reducing costs and promoting green development.

[0007] In a more preferred embodiment, the particle size of the fine sand structure ranges from 0.125 mm to 0.25 mm, and the height difference between the crests and troughs of the fine sand structure does not exceed 170 μm. The thickness of the substrate layer ranges from 50 μm to 70 μm. The thickness of the microstructure layer ranges from 75 μm to 175 μm.

[0008] The display support layer is a single-layer or multi-layer metal layer, and the metal layer is made of titanium, silver, aluminum, or gold. The substrate layer is made of polyethylene terephthalate, polymethyl methacrylate, or polycarbonate. The microstructure layer is made of acrylic resin, methacrylic resin, or silane resin.

[0009] The double-sided display nanocrystalline film further includes an adhesive backing layer adhered to the lower surface of the substrate layer or the upper surface of the microstructure layer. The adhesive backing layer is used to attach this solution to a glass curtain wall, facilitating its application in street-facing shops.

[0010] The double-sided display nanocrystalline film further includes a transparent antioxidant layer attached to the display substrate. The transparent antioxidant layer is an aluminum oxide layer, a silicon oxide layer, or a combination of both. The antioxidant layer is used to prevent the display substrate from being oxidized, thereby extending its service life.

[0011] The present invention also provides a method for preparing a double-sided display nanocrystalline film, which is used to prepare the aforementioned double-sided display nanocrystalline film, and includes the following steps.

[0012] S1: The raw material of the substrate layer is heated, and then an amorphous sheet is extruded through an extruder and kept in an amorphous state. It is then stretched into a substrate layer of a certain thickness.

[0013] S2: The microstructure layer material layer is attached to the upper surface of the substrate layer to connect the two together.

[0014] S3: The upper surface of the microstructure layer material layer is etched by plasma to form an irregular fine sand structure surface; the particle size of the fine sand structure ranges from 0.10mm to 0.30mm, and the height difference between the peaks and troughs of the fine sand structure does not exceed 250μm; the microstructure layer material layer is processed into a microstructure layer.

[0015] S4: Sputtering deposition is performed on the upper surface of the microstructure layer at an angle of inclination. The raw material of the display carrier layer is deposited on the microstructure layer to prepare the front reflective layer and the back reflective layer, thus forming the display carrier layer. When sputtering deposition is performed on the microstructure layer at an angle of inclination, only the microstructure layer facing the deposition direction will be deposited with a metal film. Therefore, by changing the inclination angle, the front reflective layer and the back reflective layer are prepared on the surface of the microstructure layer respectively.

[0016] Step S5: Sputter coating is performed again on the upper surface of the microstructure layer at an angle to achieve the adhesion of a transparent anti-oxidation film to the surfaces of the front and back reflective layers. The principle is the same as in step S4.

[0017] Step S6: Attach an adhesive backing layer to the lower surface of the substrate layer; or attach an adhesive backing layer to the upper surface of the microstructure layer, with the adhesive backing layer filling the upper surface of the microstructure layer to ultimately form a smooth surface.

[0018] Using the above solution, this invention provides a double-sided display nanocrystalline film and its preparation method. The projector projects the image onto the surface of the double-sided display nanocrystalline film. Some of the light is reflected by the front reflective layer of the display carrier layer, thus achieving the display of the image on the front side. Since the display carrier layer does not completely cover the microstructure layer, part of the image projected by the projector enters the microstructure layer and is reflected by the back reflective layer, propagating the image projected by the projector through the substrate layer, thereby achieving the display of the image on the back side as well. Therefore, a projector and a double-sided display nanocrystalline film can achieve double-sided display, effectively reducing costs and contributing to green development. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the double-sided display nanocrystalline film of the present invention;

[0020] Figure 2 for Figure 1 A partial enlarged view of the embodiment;

[0021] Figure 3 This is a schematic diagram of another embodiment of the double-sided display nanocrystalline film of the present invention;

[0022] Figure 4 for Figure 3 A partial enlarged view of the embodiment. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] Please see Figure 1 and Figure 2 This embodiment provides a method for preparing a double-sided display nanocrystalline film. The double-sided display nanocrystalline film includes: a substrate layer 10, a microstructure layer 20, and a display support layer. The substrate layer 10 is a semi-transparent film, with both its upper and lower surfaces being flat surfaces. The microstructure layer 20 is a transparent film, with its lower surface being a flat surface and its upper surface having a fine sand structure 21. The particle size of the fine sand structure 21 ranges from 0.10 mm to 0.30 mm, and the peaks and troughs of the fine sand structure 21 are... The height difference does not exceed 250μm, and the lower surface of the microstructure layer 20 is attached to the upper surface of the substrate layer. The display carrier layer includes a front reflective layer 31 and a back reflective layer 32, which are disposed opposite to each other on the surface of the fine sand structure 21. The front reflective layer 31 and the back reflective layer 32 are discontinuous. The display carrier layer is a metal film layer. The thickness range of the display carrier layer is 0.1nm-60nm, the thickness range of the substrate layer is 30μm-100μm, and the thickness range of the microstructure layer 20 is 25μm-375μm. In this embodiment, the substrate layer is a white semi-transparent film. The use of white can improve the color contrast of the projected image and enhance the display effect. The double-sided display nanocrystalline film also includes an adhesive layer 41 adhered to the lower surface of the substrate layer and a transparent anti-oxidation layer 33 adhered to the display carrier layer. The adhesive layer 41 is used to attach this solution to a glass curtain wall, which is convenient for application in street-facing shops. The transparent antioxidant layer 33 is an aluminum oxide layer, a silicon oxide layer, or a combination of an aluminum oxide layer and a silicon oxide layer. The antioxidant layer 33 is used to prevent the display carrier layer from being oxidized, thereby improving its service life.

[0026] The preparation method of double-sided display nanocrystalline film includes the following steps.

[0027] S1: The raw material of the substrate layer 10 is heated, and then an amorphous sheet is extruded through an extruder and kept in an amorphous state. It is then stretched into a substrate layer 10 of a certain thickness.

[0028] S2: The microstructure layer material layer is attached to the upper surface of the substrate layer 10 to connect the two together.

[0029] S3: The upper surface of the microstructure layer material is etched using plasma to form an irregular fine sand structure 21 surface. The particle size of the fine sand structure 21 ranges from 0.10 mm to 0.30 mm, and the height difference between the peaks and troughs of the fine sand structure 21 does not exceed 250 μm. The microstructure layer material is then processed into a microstructure layer 20. In this embodiment, the particle size of the fine sand structure 21 ranges from 0.125 mm to 0.25 mm, and the height difference between the peaks and troughs of the fine sand structure 21 does not exceed 170 μm. The thickness of the substrate layer ranges from 50 μm to 70 μm. The thickness of the microstructure layer 20 ranges from 75 μm to 175 μm.

[0030] S4: The upper surface of the microstructure layer 20 is tilted and sputtered to deposit the raw material of the display carrier layer onto the microstructure layer 20, thereby preparing the front reflective layer 31 and the back reflective layer 32 to form the display carrier layer.

[0031] Step S5: Sputter coating is performed again on the upper surface of the microstructure layer 20 at an angle of tilt to attach the transparent anti-oxidation film 33 to the surface of the front reflective layer 31 and the back reflective layer 32.

[0032] Step S6: Apply the adhesive backing layer 41 to the lower surface of the substrate layer 10.

[0033] The projector projects the image onto the surface of the double-sided display nanocrystalline film. Some of the light is reflected by the front reflective layer 31 of the display carrier layer, thus achieving the display of the image on the front. Since the display carrier layer does not completely cover the microstructure layer 20, part of the image projected by the projector enters the microstructure layer and is reflected by the back reflective layer 32, propagating the image projected by the projector through the substrate layer, thus achieving the display of the image on the back as well. Therefore, a projector and a double-sided display nanocrystalline film can achieve double-sided display, effectively reducing costs and contributing to green development.

[0034] In this embodiment, the particle size of the fine sand structure 21 ranges from 0.125 mm to 0.25 mm, and the height difference between the crests and troughs of the fine sand structure 21 does not exceed 170 μm. The thickness of the substrate layer ranges from 50 μm to 70 μm. The thickness of the microstructure layer 20 ranges from 75 μm to 175 μm.

[0035] The display support layer is a single-layer or multi-layer metal layer, and the metal layer is made of titanium, silver, aluminum, or gold. The substrate layer is made of polyethylene terephthalate, polymethyl methacrylate, or polycarbonate. The microstructure layer 20 is made of acrylic resin, methacrylic resin, or silane resin.

[0036] Example 2

[0037] Please see Figure 3 and Figure 4 This embodiment provides a method for preparing a double-sided display nanocrystalline film. The double-sided display nanocrystalline film includes: a substrate layer 10, a microstructure layer 20, and a display support layer. The substrate layer 10 is a semi-transparent film, with both its upper and lower surfaces being flat surfaces. The microstructure layer 20 is a transparent film, with its lower surface being a flat surface and its upper surface having a fine sand structure 21. The particle size of the fine sand structure 21 ranges from 0.10 mm to 0.30 mm, and the peaks and troughs of the fine sand structure 21 are... The height difference does not exceed 250μm, and the lower surface of the microstructure layer 20 is attached to the upper surface of the substrate layer. The display carrier layer includes a front reflective layer 31 and a back reflective layer 32, which are disposed opposite to each other on the surface of the fine sand structure 21. The front reflective layer 31 and the back reflective layer 32 are discontinuous. The display carrier layer is a metal film layer. The thickness range of the display carrier layer is 0.1nm-60nm, the thickness range of the substrate layer is 30μm-100μm, and the thickness range of the microstructure layer 20 is 25μm-375μm. In this embodiment, the substrate layer is a white semi-transparent film. The use of white can improve the color contrast of the projected image and enhance the display effect. The double-sided display nanocrystalline film also includes a transparent anti-oxidation layer 33 attached to the display carrier layer and an adhesive layer 41 adhered to the upper surface of the microstructure layer 20. The adhesive layer 41 is used to attach this solution to a glass curtain wall, which is convenient for application in street-facing shops. The transparent antioxidant layer 33 is an aluminum oxide layer, a silicon oxide layer, or a combination of an aluminum oxide layer and a silicon oxide layer. The antioxidant layer 33 is used to prevent the display carrier layer from being oxidized, thereby improving its service life.

[0038] The preparation method of double-sided display nanocrystalline film includes the following steps.

[0039] S1: The raw material of the substrate layer 10 is heated, and then an amorphous sheet is extruded through an extruder and kept in an amorphous state. It is then stretched into a substrate layer 10 of a certain thickness.

[0040] S2: The microstructure layer material layer is attached to the upper surface of the substrate layer 10 to connect the two together.

[0041] S3: The upper surface of the microstructure layer material is etched using plasma to form an irregular fine sand structure 21 surface. The particle size of the fine sand structure 21 ranges from 0.10 mm to 0.30 mm, and the height difference between the peaks and troughs of the fine sand structure 21 does not exceed 250 μm. The microstructure layer material is then processed into a microstructure layer 20. In this embodiment, the particle size of the fine sand structure 21 ranges from 0.125 mm to 0.25 mm, and the height difference between the peaks and troughs of the fine sand structure 21 does not exceed 170 μm. The thickness of the substrate layer ranges from 50 μm to 70 μm. The thickness of the microstructure layer 20 ranges from 75 μm to 175 μm.

[0042] S4: The upper surface of the microstructure layer 20 is tilted and sputtered to deposit the raw material of the display carrier layer onto the microstructure layer 20, thereby preparing the front reflective layer 31 and the back reflective layer 32 to form the display carrier layer.

[0043] Step S5: Sputter coating is performed again on the upper surface of the microstructure layer 20 at an angle of tilt to attach the transparent anti-oxidation film 33 to the surface of the front reflective layer 31 and the back reflective layer 32.

[0044] Step S6: Attach an adhesive layer 41 to the upper surface of the microstructure layer 20. The adhesive layer 41 fills the upper surface of the microstructure layer 20, and finally forms a flat surface.

[0045] The projector projects the image onto the surface of the double-sided display nanocrystalline film. Some of the light is reflected by the front reflective layer 31 of the display carrier layer, thus achieving the display of the image on the front. Since the display carrier layer does not completely cover the microstructure layer 20, part of the image projected by the projector enters the microstructure layer and is reflected by the back reflective layer 32, propagating the image projected by the projector through the substrate layer, thus achieving the display of the image on the back as well. Therefore, a projector and a double-sided display nanocrystalline film can achieve double-sided display, effectively reducing costs and contributing to green development.

[0046] In this embodiment, the particle size of the fine sand structure 21 ranges from 0.125 mm to 0.25 mm, and the height difference between the crests and troughs of the fine sand structure 21 does not exceed 170 μm. The thickness of the substrate layer ranges from 50 μm to 70 μm. The thickness of the microstructure layer 20 ranges from 75 μm to 175 μm.

[0047] The display support layer is a single-layer or multi-layer metal layer, and the metal layer is made of titanium, silver, aluminum, or gold. The substrate layer is made of polyethylene terephthalate, polymethyl methacrylate, or polycarbonate. The microstructure layer 20 is made of acrylic resin, methacrylic resin, or silane resin.

[0048] In summary, this invention provides a double-sided display nanocrystalline film and its preparation method. A projector projects an image onto the surface of the double-sided display nanocrystalline film. Some of the light is reflected by the front reflective layer of the display carrier layer, thus achieving front-side display. Since the display carrier layer does not completely cover the microstructure layer, part of the projected image enters the microstructure layer and is reflected by the back reflective layer, propagating the projected image through the substrate layer, thereby achieving back-side display as well. Therefore, a single projector and a single double-sided display nanocrystalline film achieve double-sided display, effectively reducing costs and promoting green development.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-sided display nanocrystalline film, characterized in that, include: The substrate layer, microstructure layer, and display carrier layer are provided; the substrate layer is a semi-transparent film, and both the upper and lower surfaces of the substrate layer are flat surfaces. The microstructure layer is a transparent film. The lower surface of the microstructure layer is a flat surface, and the upper surface of the microstructure layer is a surface with a fine sand structure. The particle size of the fine sand structure ranges from 0.10 mm to 0.30 mm, and the height difference between the peaks and troughs of the fine sand structure does not exceed 250 μm. The lower surface of the microstructure layer is attached to the upper surface of the substrate layer. The display carrier layer includes a front reflective layer and a back reflective layer. The front reflective layer and the back reflective layer are disposed opposite to each other on the surface of the fine sand structure. The front reflective layer and the back reflective layer are discontinuous. The display carrier layer is a metal film layer. The thickness of the display carrier layer ranges from 0.1 nm to 60 nm, the thickness of the substrate layer ranges from 30 μm to 100 μm, and the thickness of the microstructure layer ranges from 25 μm to 375 μm.

2. The double-sided display nanocrystalline film according to claim 1, characterized in that, The substrate layer is a white semi-transparent film, the particle size of the fine sand structure ranges from 0.125mm to 0.25mm, and the height difference between the peaks and troughs of the fine sand structure does not exceed 170μm; the thickness of the substrate layer ranges from 50μm to 70μm; and the thickness of the microstructure layer ranges from 75μm to 175μm.

3. The double-sided display nanocrystalline film according to claim 1, characterized in that, Also includes: The adhesive layer adheres to the lower surface of the substrate layer or the upper surface of the microstructure layer, and the transparent antioxidant layer is attached to the display carrier layer.

4. The double-sided display nanocrystalline film according to claim 3, characterized in that, The display support layer is a single-layer metal layer or multiple-layer metal layers, and the metal layer is made of one of titanium, silver, aluminum, and gold; the transparent anti-oxidation layer is an aluminum oxide layer or a silicon oxide layer or a combination of an aluminum oxide layer and a silicon oxide layer.

5. The double-sided display nanocrystalline film according to claim 1, characterized in that, The substrate layer is made of any one of polyethylene terephthalate, polymethyl methacrylate, and polycarbonate; the microstructure layer is made of any one of acrylic resin, methacrylic resin, and silane resin.

6. A method for preparing a double-sided display nanocrystalline film, characterized in that, The method for preparing the double-sided display nanocrystalline film according to claim 1 includes the following steps: S1: The raw material of the substrate layer is heated, and then an amorphous sheet is extruded through an extruder and kept in an amorphous state. It is then stretched into a substrate layer of a certain thickness. S2: The microstructure layer material layer is attached to the upper surface of the substrate layer to connect the two together; S3: The upper surface of the microstructure layer material layer is etched by plasma to process it into an irregular fine sand structure surface; the particle size of the fine sand structure ranges from 0.10mm to 0.30mm, and the height difference between the peaks and troughs of the fine sand structure does not exceed 250μm; the microstructure layer material layer is processed into a microstructure layer. S4: Sputter coating is performed on the upper surface of the microstructure layer at an inclined angle to deposit the raw material of the display carrier layer onto the microstructure layer, thereby preparing the front reflective layer and the back reflective layer to form the display carrier layer.

7. The method for preparing a double-sided display nanocrystalline film according to claim 6, characterized in that, Also includes: Step S5: Sputter coating is performed again on the upper surface of the microstructure layer at an angle of tilt to achieve the attachment of a transparent anti-oxidation film on the surface of the front reflective layer and the back reflective layer; Step S6: Attach an adhesive backing layer to the lower surface of the substrate layer; or attach an adhesive backing layer to the upper surface of the microstructure layer, with the adhesive backing layer filling the upper surface of the microstructure layer to ultimately form a smooth surface.

8. The method for preparing a double-sided display nanocrystalline film according to claim 6, characterized in that, The substrate layer is a white semi-transparent film, the particle size of the fine sand structure ranges from 0.125mm to 0.25mm, and the height difference between the peaks and troughs of the fine sand structure does not exceed 170μm; the thickness of the substrate layer ranges from 50μm to 70μm; and the thickness of the microstructure layer ranges from 75μm to 175μm.

9. The method for preparing a double-sided display nanocrystalline film according to claim 7, characterized in that, The display support layer is a single-layer metal layer or multiple-layer metal layers, and the metal layer is made of one of titanium, silver, aluminum, and gold; the transparent anti-oxidation layer is an aluminum oxide layer or a silicon oxide layer or a combination of an aluminum oxide layer and a silicon oxide layer.

10. The method for preparing a double-sided display nanocrystalline film according to claim 6, characterized in that, The substrate layer is made of any one of polyethylene terephthalate, polymethyl methacrylate, and polycarbonate; the microstructure layer is made of any one of acrylic resin, methacrylic resin, and silane resin.

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