Three-dimensional key cover plate

Abstract

The utility model discloses a three-dimensional key cover plate, which comprises an acrylic plate and toughened glass arranged above the acrylic plate, the acrylic plate is attached to the toughened glass through optical cement, the acrylic plate is provided with three-dimensional key character protrusions, and the three-dimensional key character protrusions are arranged on the acrylic plate. The tempered glass is provided with hollow grooves corresponding to the three-dimensional key character protrusions, and the height of the three-dimensional key character protrusions is larger than the sum of the thickness of the tempered glass and the thickness of the optical cement. The character protrusions of the three-dimensional keys can protrude out of the tempered glass, so that the three-dimensional keys are formed. Acrylic injection molding is a very mature process in the industry at present, patterns can be very fine, and the cost is very low. However, the surface hardness of the acrylic plate is low, so that tempered glass with high hardness needs to be attached to the surface of the acrylic plate, and a display area is protected from being scratched. And finally, a touch module is arranged on the character bulge of the three-dimensional key, so that the function of the three-dimensional key can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a three-dimensional key cover plate. Background Art

[0002] At present, more and more smart products are used in life, and people's experience of products is getting higher and higher. At present, the touch buttons of smart products on the market generally use glass cover patterns to achieve a semi-transparent effect, without the touch feeling of physical buttons, so three-dimensional 3D touch buttons are increasingly in demand by customers. The traditional glass etching 3D button solution has a very low yield and is difficult to achieve mass production, mainly because of the etching uniformity and the many appearance defects caused by etching, and the high price. In addition, the etching process currently has very high environmental protection requirements for the factory, and many factories cannot meet the requirements. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to design a three-dimensional key cover plate which has high yield, can be mass-produced, is cheap and meets environmental protection requirements.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] In order to solve the above technical problems, the utility model provides a three-dimensional key cover plate, which includes an acrylic plate and tempered glass arranged above the acrylic plate, the acrylic plate and the tempered glass are bonded by optical glue, the acrylic plate is provided with a three-dimensional key character protrusion, the tempered glass is provided with a hollow groove corresponding to the three-dimensional key character protrusion, and the height of the three-dimensional key character protrusion is greater than the sum of the thickness of the tempered glass and the optical glue.

[0006] As a preferred implementation of the three-dimensional key cover provided by the utility model, the tempered glass is high-aluminum-silicon glass.

[0007] As a preferred implementation of the three-dimensional key cover provided by the utility model, the thickness of the tempered glass is 0.5 mm.

[0008] As a preferred implementation of the three-dimensional key cover provided by the utility model, a single side edge of the hollow groove is 0.02 mm away from a single side edge of the protrusion of the three-dimensional key character.

[0009] As a preferred implementation of the three-dimensional key cover provided by the utility model, the height of the protrusion of the three-dimensional key character is 0.9 mm.

[0010] As a preferred implementation of the three-dimensional key cover provided by the utility model, the thickness of the optical glue is 0.2 mm.

[0011] As a preferred implementation of the three-dimensional key cover provided by the utility model, a touch film is provided on the raised upper surface of the three-dimensional key characters.

[0012] As a preferred implementation of the three-dimensional key cover provided by the utility model, the upper surface of the acrylic plate is provided with a groove surrounding the protrusions of the three-dimensional key characters.

[0013] As a preferred implementation of the three-dimensional key cover provided by the utility model, the cross-sectional shape of the groove is square, arc or triangle.

[0014] As a preferred implementation of the three-dimensional key cover provided by the utility model, the depth of the groove is 0.2 mm.

[0015] The utility model has the following beneficial effects:

[0016] Since the height of the raised characters of the three-dimensional key is greater than the sum of the thickness of the tempered glass and the optical adhesive, the raised characters of the three-dimensional key can protrude above the tempered glass, thus forming a three-dimensional key; acrylic injection molding is a very mature process in the industry, the pattern can often be very fine, and the cost is also very advantageous. However, the surface hardness of acrylic is relatively low, so it is necessary to attach a tempered glass with a higher hardness to the surface of the acrylic board to protect the display area from scratches. Finally, a touch module is set on the raised characters of the three-dimensional key to realize the function of the three-dimensional key. This structure has a high yield rate, can be mass-produced, is low-priced and meets environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The present invention is a schematic structural diagram of a three-dimensional key cover plate provided by the utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the decomposition structure.

[0020] Figure 3 for Figure 1 Schematic diagram of the improved structure.

[0021] Description of Figure Numbers:

[0022] Acrylic plate 1; tempered glass 2; optical adhesive 3; three-dimensional key character protrusion 11; hollow groove 21; groove 12. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] The utility model provides a three-dimensional key cover plate, which comprises an acrylic plate and a tempered glass arranged above the acrylic plate, the acrylic plate and the tempered glass are bonded by optical glue, the acrylic plate is provided with a three-dimensional key character protrusion, the tempered glass is provided with a hollow groove corresponding to the three-dimensional key character protrusion, and the height of the three-dimensional key character protrusion is greater than the sum of the thickness of the tempered glass and the optical glue.

[0027] Since the height of the raised characters of the three-dimensional key is greater than the sum of the thickness of the tempered glass and the optical adhesive, the raised characters of the three-dimensional key can protrude above the tempered glass, thus forming a three-dimensional key; acrylic injection molding is a very mature process in the industry, the pattern can often be very fine, and the cost is also very advantageous. However, the surface hardness of acrylic is relatively low, so it is necessary to attach a tempered glass with a higher hardness to the surface of the acrylic board to protect the display area from scratches. Finally, a touch module is set on the raised characters of the three-dimensional key to realize the function of the three-dimensional key. This structure has a high yield rate, can be mass-produced, is low-priced and meets environmental protection requirements.

[0028] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.

[0029] See also Figure 1 and Figure 2 , a three-dimensional key cover provided by the utility model includes an acrylic plate 1 and a tempered glass 2, the tempered glass 2 is arranged above the acrylic plate 1, the acrylic plate 1 and the tempered glass 2 are bonded by an optical glue 3, a three-dimensional key character protrusion 11 is arranged on the acrylic plate 1, and a hollow groove 21 corresponding to the three-dimensional key character protrusion 11 is arranged on the tempered glass 2, and the height of the three-dimensional key character protrusion 11 is greater than the sum of the thicknesses of the tempered glass 2 and the optical glue 3. Since the height of the three-dimensional key character protrusion 11 is greater than the sum of the thicknesses of the tempered glass 2 and the optical glue 3, the three-dimensional key character protrusion 11 can protrude above the tempered glass 2, thereby forming a three-dimensional key; acrylic injection molding is a very mature process in the industry, the pattern can often be very fine, and the cost is also very advantageous. However, the surface hardness of acrylic is relatively low, so it is necessary to attach a tempered glass 2 with a higher hardness to the surface of the acrylic plate 1 to protect the display area from scratches. Finally, a touch module is arranged on the three-dimensional key character protrusion 11 to realize the function of the three-dimensional key. Products with this structure have a high yield rate, can be mass-produced, are low-priced and meet environmental protection requirements.

[0030] Furthermore, the tempered glass 2 is high-aluminum silicate glass. The thickness of the tempered glass 2 is 0.5 mm. The single side of the hollow groove 21 is 0.02 mm away from the single side of the three-dimensional key character protrusion 11. A piece of high-aluminum silicate glass with a thickness of about 0.5 mm is laser engraved and hollowed out according to the key. If the key pattern is large and the line width is thick, it can also be evaluated to be completed by direct CNC engraving. The single side of the high-aluminum silicate glass engraving and hollowing is 0.02 mm larger than the single side of the three-dimensional key character protrusion 11 of the acrylic plate 1 to ensure that the three-dimensional key character protrusion 11 of the acrylic plate 1 can pass through the tempered glass 2.

[0031] Furthermore, the height of the three-dimensional key character protrusion 11 is 0.9 mm, the thickness of the optical adhesive 3 is 0.2 mm, and after passing through the tempered glass 2, the key protrudes from the upper surface of the tempered glass 2 by about 0.2 mm.

[0032] Furthermore, a touch film is disposed on the upper surface of the three-dimensional key character protrusion 11, so that the three-dimensional key character protrusion 11 can realize a touch function.

[0033] See also Figure 3 As a further optimization scheme of Example 1, in this embodiment, the upper surface of the acrylic plate 1 is provided with a groove 12 surrounding the three-dimensional key character protrusion 11. Since the injection mold will have a certain wear when the number of production and manufacturing is large, if the mold is worn here, a rounded corner will be formed on the acrylic plate 1 after the injection molding is completed, and eventually the rounded corner of the acrylic plate 1 will interfere with the tempered glass 2 and cannot be assembled. Therefore, after the groove 12 is provided, the acrylic plate 1 will only have a rounded corner at the groove 12 even if the mold is worn, thereby avoiding affecting the assembly.

[0034] Furthermore, the cross-sectional shape of the groove 12 is square, arc or triangle, but not limited thereto. The square, arc and triangle shapes are simple in structure and easy to manufacture; and the assembly accuracy will not be affected after the mold is worn.

[0035] Furthermore, the depth of the groove 12 is 0.2 mm.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A three-dimensional key cover, characterized in that: It includes an acrylic plate and tempered glass arranged on the acrylic plate, the acrylic plate and the tempered glass are bonded by optical glue, the acrylic plate is provided with three-dimensional key character protrusions, the tempered glass is provided with hollow grooves corresponding to the three-dimensional key character protrusions, and the height of the three-dimensional key character protrusions is greater than the sum of the thicknesses of the tempered glass and the optical glue.

2. The three-dimensional key cover according to claim 1, characterized in that: The tempered glass is high alumina silicon glass.

3. The three-dimensional key cover according to claim 1, characterized in that: The thickness of the tempered glass is 0.5 mm.

4. The three-dimensional key cover according to claim 1, characterized in that: The distance between the single side edge of the hollow groove and the single side edge of the raised three-dimensional key character is 0.02 mm.

5. The three-dimensional key cover according to claim 1, characterized in that: The height of the raised three-dimensional key characters is 0.9 mm.

6. The three-dimensional key cover according to claim 1, characterized in that: The thickness of the optical adhesive is 0.2 mm.

7. The three-dimensional key cover according to claim 1, characterized in that: A touch film is arranged on the raised upper surface of the three-dimensional key characters.

8. The three-dimensional key cover according to claim 1, characterized in that: The upper surface of the acrylic plate is provided with a groove surrounding the raised three-dimensional key characters.

9. The three-dimensional key cover according to claim 8, characterized in that: The cross-sectional shape of the groove is square, arc or triangle.

10. The three-dimensional key cover according to claim 8, characterized in that: The depth of the groove is 0.2 mm.

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