Optical fiber display cover plate and preparation method and application thereof

Abstract

The application relates to an optical fiber display cover plate and a preparation method and application thereof. The preparation method comprises the following steps: arranging a mold cover outside the side wall of an optical fiber column, the mold is a slider group with a plurality of special-shaped grooves on the side surface; vacuum melt pressing is performed on the optical fiber column by using the mold, the special-shaped grooves are completely pressed into the optical fiber column, a plurality of prisms which surround the side wall are formed on the surface of the optical fiber column, a melt-pressed optical fiber column is obtained; the melt-pressed optical fiber column is made into a plurality of optical fiber display cover plates; and the bottom area of the upper bottom surface of the optical fiber display cover plate is larger than the bottom area of the lower bottom surface. The preparation method of the optical fiber display cover plate has high production efficiency, the prepared optical fiber display cover plate has high resolution and high impact strength, can keep the original state under the free-falling impact of a 50g steel ball with a height of 50cm, has a micro-magnification effect, can improve the screen ratio, improves the screen visual effect, and is more suitable for practical use.

Description

Technical Field

[0001] This invention relates to the field of optical device fabrication, and in particular to a fiber optic display cover plate, its fabrication method, and its application. Background Technology

[0002] In recent years, with the continuous advancement of technology, electronic products such as mobile phones, watches, and televisions have become widely used in people's lives. The screen-to-body ratio of electronic products is particularly important to their user experience, and improving the screen-to-body ratio can greatly increase the competitiveness of electronic products.

[0003] Traditional LCD screens have relatively wide black borders, resulting in a low screen-to-body ratio and reduced visual appeal. Fiber optic columns, with their "zero thickness" optical characteristics, perfectly meet this requirement in the display industry. Furthermore, by fabricating them into tapered fiber optic cover plates, a micro-enlargement effect can be achieved, resulting in a higher screen-to-body ratio and superior visual quality.

[0004] Existing tapered micro-magnification fiber optic cover plates are often fabricated using a drawing method, resulting in poor strength. Summary of the Invention

[0005] The main objective of this invention is to provide a fiber optic display cover plate, its preparation method, and its application. The technical problem to be solved is how to prepare a fiber optic display cover plate that has a micro-magnification effect and high impact resistance, thus making it more suitable for practical use.

[0006] The objective of this invention and the technical problem it solves are achieved through the following technical solution. A method for preparing an optical fiber display cover plate according to this invention comprises the following steps:

[0007] The mold is placed around the side wall of the fiber column. The aforementioned mold is a slider assembly with multiple irregular grooves on the side.

[0008] Vacuum fusion pressing is performed on the aforementioned fiber column using the aforementioned mold to completely press the aforementioned irregular groove into the aforementioned fiber column, so that multiple truncated pyramids are formed around its sidewalls on the surface of the aforementioned fiber column, thus obtaining the fused fiber column.

[0009] The aforementioned fused fiber pillars are used to fabricate multiple fiber optic display covers;

[0010] The bottom area of ​​the upper surface of the aforementioned fiber optic display cover is larger than the bottom area of ​​the lower surface.

[0011] Furthermore, according to the aforementioned method for preparing the fiber optic display cover, the diameter of the aforementioned fiber optic column is 25–80 mm; based on the total variation in the diameter of the aforementioned fiber optic column, the distance at which the aforementioned mold melts and presses inwards on its side is 1–20 mm.

[0012] Furthermore, according to the aforementioned method for preparing the optical fiber display cover, the aforementioned fusion pressing distance is: the aforementioned diameter of the optical fiber column = 0.08 to 0.25.

[0013] Furthermore, according to the aforementioned method for preparing the fiber optic display cover, the width of the aforementioned irregular groove is 2.5–15 mm, the depth is 1.5–10 mm, and the spacing between the aforementioned irregular grooves is 3–20 mm.

[0014] Furthermore, according to the aforementioned method for preparing the fiber optic display cover, the vertical cross-section of the aforementioned irregular groove is trapezoidal.

[0015] Furthermore, according to the aforementioned method for preparing the fiber optic display cover, the first end of the aforementioned fiber optic display cover is a cover column, the second end is a cover platform, the smaller bottom surface of the aforementioned cover platform is the bottom surface of the aforementioned fiber optic display cover, and the larger bottom surface of the aforementioned cover platform is the same as the bottom surface of the aforementioned cover column.

[0016] Furthermore, according to the aforementioned method for preparing the fiber optic display cover, the vacuum degree of the vacuum pressing is 0.01–0.1 MPa.

[0017] Furthermore, according to the aforementioned method for preparing fiber optic display covers, the aforementioned fused fiber optic columns are sliced, finely carved, polished, and strengthened to produce multiple fiber optic display covers.

[0018] The objective of this invention and the solution to its technical problem are also achieved by the following technical solution. A fiber optic display cover plate according to this invention, prepared using any of the aforementioned methods, retains its original shape under free-fall impact from a 50g steel ball at a height of 50cm.

[0019] The objective of this invention and the technical problem it solves are also achieved by the following technical solution. An electronic device according to this invention includes the aforementioned fiber optic display cover.

[0020] By employing the above technical solution, the fiber optic display cover plate, its preparation method, and its application of the present invention have at least the following advantages:

[0021] This invention uses optical fiber pillars as raw materials to produce optical fiber display cover plates with high resolution. The use of a fusion pressing method makes the prepared optical fiber display cover plates more dense and gives them high impact resistance.

[0022] The mold used in this invention is a slider with multiple irregular grooves on the side, which can simultaneously complete the preparation of multiple fiber optic display cover plates. Compared with the traditional method of heating and drawing to make a single light cone, the solution of this invention can improve production efficiency.

[0023] The bottom surface of the fiber optic display cover plate produced by this invention has a larger bottom area than the bottom surface. In use, the smaller bottom surface faces down and the larger bottom surface faces up. The image below the fiber optic display cover plate will be slightly magnified, thereby increasing the screen-to-body ratio and improving the screen viewing experience.

[0024] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 These are top view schematic diagrams of the mold and fiber pillar in some embodiments;

[0027] Figure 2 These are schematic cross-sectional views of the mold and fiber pillars in some embodiments;

[0028] Figure 3 These are schematic diagrams of the fiber optic pillars in some embodiments;

[0029] Figure 4 These are schematic diagrams of the mold structure in some embodiments;

[0030] Figure 5 These are schematic diagrams of the slider structure in some embodiments;

[0031] Figure 6 These are schematic diagrams of the fused fiber pillars in some embodiments;

[0032] Figure 7 These are schematic diagrams of the fiber optic display cover in some embodiments.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Fiber optic column; 2. Mold; 21. Slider; 3. Fusion-pressed fiber optic column; 4. Fiber optic display cover plate. Detailed Implementation

[0035] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed description of the specific implementation methods, structures, features, and effects of an optical fiber display cover plate, its preparation method, and its application based on the present invention. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable manner.

[0036] These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0037] This invention provides a method for preparing a fiber optic display cover plate, such as... Figures 1-7 As shown,

[0038] The mold 2 is placed around the side wall of the fiber column 1. The mold 2 is a slider group with multiple irregular grooves on the side. The slider group is composed of multiple sliders 21.

[0039] The optical fiber post 1 is vacuum-fused using mold 2, and the irregular groove is completely pressed into the optical fiber post 1, so that multiple truncated pyramids are formed around its sidewalls on the surface of the optical fiber post 1, resulting in fused optical fiber post 3.

[0040] The fused fiber pillars 3 are made into multiple fiber optic display cover plates 4;

[0041] The bottom area of ​​the upper surface of the fiber optic display cover plate 4 is larger than the bottom area of ​​the lower surface.

[0042] Specifically, fiber pillar 1 as Figure 3 As shown. Fiber optic column 1 can be a triangular prism, cuboid, hexagonal prism, cylinder, or other prism shapes. The diameter of fiber optic column 1 is a characteristic dimension of the column's base, which is set as the diameter of a circle, the distance between opposite sides of a regular hexagon, the height of an equilateral triangle, or the side length of a rectangle. Using optical fiber as the raw material enables the fabricated display cover to have high resolution.

[0043] Mold 2 Figure 4 As shown, this is a slider assembly with multiple regularly arrayed irregularly shaped grooves on its side. Figure 5This is a schematic diagram of a single slider 21 in the slider group. If the fiber optic post 1 is a polygonal prism, the number of sliders 21 is equal to the number of facets on the side of the fiber optic post 1. The fusion pressing method makes the prepared fiber optic display cover plate 4 more dense and has high impact resistance. The mold 2 has multiple irregularly shaped grooves on its side, enabling the simultaneous preparation of multiple fiber optic display cover plates. Compared with the traditional method of heating and drawing to produce a single optical cone, the solution of this invention can improve production efficiency. The shape and number of irregularly shaped grooves determine how many fiber optic display cover plates 4 can be prepared at a time.

[0044] Vacuum bonding of fiber post 1 using mold 2 creates multiple frustums around its sidewalls on the surface of fiber post 1, resulting in bonded fiber post 3. The bonded fiber post 3 is shown below. Figure 6 As shown. Generally, one frustum encircling the sidewall can produce one fiber optic display cover plate 4. If the shape of the irregular groove is symmetrical in the cross-sectional direction parallel to the bottom surface of the fiber optic column 1, then one frustum encircling the sidewall can produce two fiber optic display cover plates 4, further improving production efficiency.

[0045] Then, the fiber optic display cover plate 4 is fabricated by fusion-pressing the fiber optic column 3. The bottom area of ​​the upper surface of the fiber optic display cover plate 4 is larger than the bottom area of ​​the lower surface. The magnification of the fiber optic display cover plate 4 is adjusted by the ratio of the bottom area of ​​the upper surface to the bottom area of ​​the lower surface. The magnification range is between 1.01 and 1.04. It should be noted that the magnification is larger at the edges and smaller in the middle.

[0046] In some embodiments, the diameter of the fiber optic post 1 is 25–80 mm; based on the total variation in the diameter of the fiber optic post 1, the distance the mold 2 presses inward toward its side is 1–20 mm. If the diameter of the fiber optic post 1 is less than 25 mm, its practical application is limited; if the diameter of the fiber optic post 1 is greater than 80 mm, due to the amplification effect being larger at the edges and smaller in the middle, if the diameter is too large, the amplification effect in the middle will not be obvious during use. Therefore, the diameter of the fiber optic post 1 is limited to 25–80 mm.

[0047] In some embodiments, the aforementioned fusion pressing distance is 0.08 to 0.25 times the diameter of the aforementioned fiber optic post. When the ratio is below 0.08, the fusion pressing distance is too low, resulting in insufficient inward compression depth and insignificant amplification effect; when the ratio is above 0.25, the fusion pressing distance is too high, leading to excessive fusion pressing depth, which can easily damage the edges, and also makes hot pressing more difficult, resulting in excessive pressure. Therefore, the fusion pressing distance is controlled to be 0.08 to 0.25 times the diameter of the aforementioned fiber optic post.

[0048] In some embodiments, the width of the irregular groove is 2.5–15 mm, the depth is 1.5–10 mm, and the spacing between the irregular grooves is 3–20 mm. The maximum size of the fiber optic display cover plate 4 is calculated by adding twice the depth of the irregular groove to the diameter of the fiber optic post 1, subtracting the inward fusion pressing distance, and then subtracting 0.5–10 mm. When the width of the irregular groove is less than 2.5 mm, the fiber optic display cover plate is too thin, resulting in poor impact resistance; when the width of the irregular groove is greater than 15 mm, the fiber optic display cover plate is too thick, increasing material loss. When the depth of the irregular groove is less than 1.5 mm, the magnification effect is not obvious; when it is greater than 10 mm, the inward compression is too large, increasing the possibility of edge damage and making it difficult to fill the internal space of the groove. When the spacing between the irregular grooves is less than 3 mm, the materials in the irregular grooves of different heights are prone to mutual interference during fusion pressing; when the spacing between the irregular grooves is greater than 15 mm, it increases material loss.

[0049] In some embodiments, the vertical cross-section of the irregular groove is trapezoidal. Using a trapezoidal irregular groove is advantageous because its inner walls are all flat, making it easier to fully press into the fiber post 1 during vacuum welding. Furthermore, the vertical cross-section of the irregular groove is an isosceles trapezoid. Since the isosceles trapezoid is axially symmetrical in the cross-sectional direction parallel to the bottom surface of the fiber post 1, one irregular groove can produce two fiber display cover plates 4, further improving production efficiency. The width of the isosceles trapezoidal groove divided by 2.2 to 2.8 gives the thickness of the fiber display cover plate 4.

[0050] In some embodiments, such as Figure 7 As shown, the first end of the fiber optic display cover 4 is a cover column, and the second end is a cover platform. The smaller bottom surface of the cover platform is the bottom surface of the micro-magnified fiber optic display cover, and the larger bottom surface of the cover platform is the same as the bottom surface of the cover column. This shape facilitates installation, is less prone to damage from impacts, and is more suitable for practical use.

[0051] In some embodiments, the angle between the side surface and the bottom surface of the fiber optic display cover 4 is 30° to 60°. An angle less than 30° results in the fiber optic display cover 4 being too thick for the same magnification, limiting its practical application. An angle greater than 60° makes it difficult to fully press the irregular groove of the mold 2 into the fiber column 1 during vacuum melting, increasing the melting distance and making processing inconvenient.

[0052] In some embodiments, the vacuum degree of vacuum pressing is controlled to be 0.01–0.1 MPa. When the vacuum degree is below 0.01 MPa, high-power equipment is required, increasing costs. When it is above 0.1 MPa, defects such as pores may exist inside the material during the hot pressing process. Therefore, the vacuum degree of vacuum pressing is controlled to be 0.01–0.1 MPa.

[0053] This invention provides a fiber optic display cover plate, which is prepared by any of the aforementioned methods and retains its original shape under the impact of a 50g steel ball falling freely from a height of 50cm.

[0054] In some embodiments, the diameter of the fiber optic display cover 4 is 10–50 mm, and the thickness is 0.5–3 mm. If the diameter of the fiber optic display cover 4 is less than 10 mm, its practical application is limited; if the diameter of the fiber optic display cover 4 is greater than 50 mm, due to the magnification being larger at the edges and smaller in the middle, the magnification effect in the middle is not obvious when the diameter is too large. Therefore, the diameter of the fiber optic display cover 4 is controlled to be 10–50 mm. If the thickness of the fiber optic display cover 4 is less than 0.5 mm, its impact resistance is weak; if the thickness of the fiber optic display cover 4 is greater than 3 mm, the production cost is high, and its practical application is limited. Therefore, the thickness of the fiber optic display cover 4 is controlled to be 0.5–3 mm.

[0055] This invention provides an electronic device that includes the aforementioned fiber optic display cover. The electronic device can be a watch, mobile phone, or instrument display, etc.

[0056] The present invention will be further described below with reference to specific embodiments, but this should not be construed as a limitation on the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the above description of the present invention still fall within the scope of protection of the present invention.

[0057] Unless otherwise specified, all materials and reagents mentioned below are commercially available products well known to those skilled in the art; unless otherwise specified, all methods described are methods known in the art. Unless otherwise defined, the technical or scientific terms used should have the ordinary meaning understood by those skilled in the art to which this invention pertains.

[0058] Example 1

[0059] The fiber optic column 1 is a hexagonal prism with a distance of 25mm between opposite sides of the hexagonal base. The irregular groove of the mold 2 is an isosceles trapezoidal groove with a depth of 1mm, a width of 3mm, a 45° angle between the two sides of the groove, and a spacing of 3mm between the grooves. There are 9 isosceles trapezoidal grooves on the slider 21.

[0060] Vacuum fusion pressing is performed on fiber post 1 using mold 2, with the vacuum degree controlled at 0.06 MPa. The total change in diameter of fiber post 1 is 2 mm. The slider 21 of mold 2 is used to press fiber post 1 inward, and the isosceles trapezoidal groove of mold 2 is completely pressed into the fiber post 1, so that 9 trapezoidal truncated pyramids are formed on the surface of fiber post 1, resulting in fused fiber post 3.

[0061] The fused fiber column 3 is prepared into an optical fiber display cover plate 4 after slicing, fine carving, polishing and strengthening. The optical fiber display cover plate 4 has a diameter of 18mm and a thickness of 1.2mm, of which the thickness of the cover plate platform is 1mm and the thickness of the cover plate column is 0.2mm.

[0062] The magnification of the fiber optic display cover 4 was tested by placing the fiber optic display cover 4 under a projector. There is a calibrated 10mm scale line below it. The value of the scale line displayed on the top of the cover was measured to be 10.38mm, which means the magnification is 1.04.

[0063] The fiber optic display cover 4 was subjected to a strength test. Under the impact of a 50g steel ball falling freely from a height of 50cm, the fiber optic display cover 4 maintained its original shape.

[0064] Example 2

[0065] The fiber optic column 1 is a hexagonal prism with a distance of 80mm between opposite sides of the hexagonal base. The irregular groove of the mold 2 is an isosceles trapezoidal groove with a depth of 10mm, a width of 15mm, a 45° angle between the two sides of the inclined side, and a spacing of 3mm. There are 9 isosceles trapezoidal grooves on a single slider 21 in the mold 2.

[0066] Vacuum fusion pressing is performed on fiber post 1 using mold 2, with the vacuum degree controlled at 0.03 MPa. (Based on the total change of 20 mm in diameter of fiber post 1, the slider 21 of mold 2 is used to press fiber post 1 inward.) The trapezoidal groove is completely pressed into the interior of fiber post 1, so that 9 trapezoidal truncated pyramids are formed on the surface of fiber post 1, resulting in fused fiber post 3.

[0067] The fused fiber column 3 is prepared into an optical fiber display cover plate 4 after slicing, fine carving, polishing and strengthening. The optical fiber display cover plate 4 has a diameter of 70mm and a thickness of 6.5mm, of which the thickness of the cover plate platform is 4.5mm and the thickness of the cover plate column is 2mm.

[0068] The magnification of the fiber optic display cover 4 is detected by a projector. The fiber optic display cover 4 is placed under the projector, and there is a calibrated 10mm scale line below it. The value of the scale line displayed on the top of the cover is 10.14mm, which means the magnification is 1.01.

[0069] The fiber optic display cover 4 was subjected to a strength test. Under the impact of a 50g steel ball falling freely from a height of 50cm, the fiber optic display cover 4 maintained its original shape.

[0070] Comparative Example 1

[0071] Using the same optical fiber as in Example 1, an optical cone is made by drawing it through intermediate heating. After slicing, carving, polishing, and strengthening, it is prepared into an optical fiber display cover with the same size as the optical fiber display cover in Example 1.

[0072] The magnification of the fiber optic display cover obtained in Comparative Example 1 was tested. The fiber optic display cover was placed under a projector, and there was a calibrated 10mm scale line below it. The value of the scale line displayed above the cover was measured to be 10.31mm, which means the magnification is 1.03.

[0073] The fiber optic display cover plate prepared in Comparative Example 1 was subjected to strength testing. The fiber optic display cover plate shattered under the impact of a 50g steel ball falling freely from a height of 30cm.

[0074] The technical features in the claims and / or specification of this invention can be combined, and the combination is not limited to the combinations obtained through reference in the claims. Technical solutions obtained by combining the technical features in the claims and / or specification are also within the scope of protection of this invention.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A method for preparing a fiber optic display cover plate, characterized in that, The mold is placed around the side wall of the fiber column, and the mold is a slider assembly with multiple irregular grooves on the side. The optical fiber post is vacuum-fused using the mold, and the irregular groove is completely pressed into the optical fiber post, so that multiple truncated pyramids are formed around its sidewalls on the surface of the optical fiber post, thus obtaining the fused optical fiber post. The fused fiber pillars are used to make multiple fiber optic display covers; The bottom area of ​​the upper surface of the fiber optic display cover is larger than the bottom area of ​​the lower surface. The fiber optic display cover plate remained intact after being dropped from a height of 50cm by a 50g steel ball.

2. The preparation method according to claim 1, characterized in that, The diameter of the optical fiber column is 25~80mm; Based on the total change in the diameter of the optical fiber column, the distance of the mold pressing inward on its side is 1~20mm.

3. The preparation method according to claim 2, characterized in that, The distance of the fusion pressing is: the diameter of the optical fiber column = 0.08~0.

25.

4. The preparation method according to claim 1, characterized in that, The width of the irregular groove is 2.5~15 mm, the depth is 1.5~10 mm, and the spacing between the irregular grooves is 3~20 mm.

5. The preparation method according to claim 1, characterized in that, The vertical cross-section of the irregular groove is trapezoidal.

6. The preparation method according to claim 1, characterized in that, The first end of the fiber optic display cover is a cover column, and the second end is a cover platform. The smaller bottom surface of the cover platform is the bottom surface of the fiber optic display cover, and the larger bottom surface of the cover platform is the same as the bottom surface of the cover column.

7. The preparation method according to claim 1, characterized in that, The fused fiber optic column is sliced, engraved, polished, and strengthened to produce multiple fiber optic display covers.

8. A fiber optic display cover plate, characterized in that, Prepared by the preparation method according to any one of claims 1 to 7, it retains its original shape under free fall impact from a 50g steel ball at a height of 50cm.

9. An electronic device, characterized in that, It includes the fiber optic display cover plate as described in claim 8.

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