Decorative ring light leakage-proof back plate structure and mobile phone back plate

Abstract

This disclosure provides a back panel structure for preventing light leakage through a decorative ring and a mobile phone back panel. The back panel structure includes a back panel with a circular groove on one side and a circular protrusion on the side corresponding to the circular groove. A decorative ring mounting hole is provided at the bottom of the circular groove for mounting a camera decorative ring. The inner wall of the decorative ring mounting hole forms an irregular arc surface along the circumference, and the decorative ring mounting hole is adapted to the edge of the camera decorative ring. The back panel includes a surface composite layer, an electroplating layer, a first cover ink layer, a thermosetting adhesive layer, a second cover ink layer, and a polycarbonate layer stacked sequentially. Layered light blocking through the first and second cover ink layers significantly improves the light-blocking effect on the edges of various complex decorative rings. The thermosetting adhesive layer applied to the second cover ink layer provides a flat base, allowing the first cover ink layer to be evenly coated on the thermosetting adhesive layer, thus improving the light-blocking effect of the first cover ink layer on the edges of the decorative ring.

Description

Technical Field

[0001] This disclosure relates to the technical field of back panel manufacturing, and in particular to a back panel structure with a decorative ring to prevent light leakage and a mobile phone back panel. Background Technology

[0002] As smartphone designs become increasingly integrated and high-end, camera module sizes are constantly increasing, requiring decorative rings on the back panel for mounting. These decorative rings are installed in mounting holes on the back panel, and the camera module is then assembled to the back panel via these rings.

[0003] The mounting holes on the back panel are designed to fit the edge of the decorative ring. The back panel's layered structure incorporates a single layer of cover ink for light blocking. However, due to the curved, chamfered, or micro-textured edges of the mounting holes, the single layer of cover ink can easily cause light leakage at the decorative ring's edge, especially at irregular edges. Therefore, the single layer of cover ink is insufficient to effectively block light from the decorative ring's edge.

[0004] For example, patent application number 202122307722.X discloses a backplate with an external coating effect for a liquid crystal panel, including a reinforcing layer, a first electroplating layer, a coating layer, a composite layer, a transfer layer, a second electroplating layer, and a cover layer. The thickness of the first electroplating layer is equal to the thickness of the second electroplating layer, the thickness of the reinforcing layer is equal to the thickness of the coating layer, and the thicknesses of the composite layer, the cover layer, and the coating layer are arranged in descending order. The thickness of the first electroplating layer is less than the thickness of the coating layer, and the side of the coating layer facing the first electroplating layer has a matte finish. However, this cover layer design cannot solve the problem of light leakage that easily occurs at the lateral or specific angles of the decorative ring edge. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a decorative ring back panel structure and a mobile phone back panel that improves the light-blocking effect and prevents light leakage.

[0006] The purpose of this disclosure is achieved through the following technical solution: A backplate structure for preventing light leakage with a decorative ring includes a laminated backplate. A circular groove is formed on one side of the laminated backplate, and a circular protrusion is formed on one side of the laminated backplate corresponding to the circular groove. A decorative ring mounting hole is formed at the bottom of the circular groove. The circular groove is used to mount a camera decorative ring. The inner wall of the decorative ring mounting hole forms an irregular arc surface along the circumference. The decorative ring mounting hole is adapted to the edge of the camera decorative ring. The laminated back panel comprises a surface composite layer, an electroplated layer, a first cover ink layer, a thermosetting adhesive layer, a second cover ink layer, and a polycarbonate layer stacked sequentially. The thickness of the first cover ink layer is greater than that of the second cover ink layer. The thickness of the first cover ink layer is 30μm-40μm, the thickness of the second cover ink layer is 20μm-30μm, and the thickness of the thermosetting adhesive layer is 20μm-30μm.

[0007] In one embodiment, the inner wall of the annular groove is formed with an arc-shaped mounting surface.

[0008] In one embodiment, an arc transition surface is formed between the annular protrusion and the main body of the laminated back plate.

[0009] In one embodiment, the inner wall of the mounting hole of the decorative ring is further provided with a fixing member, which is used to fix the camera decorative ring.

[0010] In one embodiment, there are multiple fasteners, which are arranged sequentially along the circumference of the mounting holes of the decorative ring.

[0011] In one embodiment, the surface composite layer includes a reinforcing liquid layer, a composite plate layer, a layer, and a transfer layer stacked sequentially, wherein the electroplating layer is electroplated on the side of the transfer layer opposite to the layer.

[0012] In one embodiment, the thickness of the reinforcing liquid layer is 12μm-17μm, the thickness of the composite plate layer is 0.35mm-0.4mm, and the thickness of the coating layer is 3μm-5μm.

[0013] In one embodiment, the thickness of the electroplated layer is 200nm-450nm.

[0014] In one embodiment, the thickness of the polycarbonate layer is 0.08 mm to 0.15 mm.

[0015] A mobile phone back panel includes a camera decorative ring and a back panel structure for preventing light leakage of the decorative ring as described in any of the above embodiments. The camera decorative ring is installed in the annular groove, and a portion of the camera decorative ring passes through the decorative ring mounting hole.

[0016] Compared with the prior art, this disclosure has at least the following advantages: The aforementioned backplate structure for preventing light leakage in the decorative ring forms a double light-shielding effect through the layering of a first and a second cover ink layer. When one cover ink layer has coverage defects at a specific angle or chamfer, the other cover ink layer can compensate for the light-shielding effect, significantly improving the light-shielding effect on the edges of various complex decorative rings. By coating the second cover ink layer with a thermosetting adhesive layer, the thermosetting adhesive layer provides a flat adhesion substrate for the first cover ink layer, allowing the first cover ink layer to be evenly coated on the thermosetting adhesive layer, thereby improving the light-shielding effect of the first cover ink layer on the edges of the decorative ring. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the back panel structure for preventing light leakage of the decorative ring according to one embodiment; Figure 2 for Figure 1 Another structural diagram of the back panel structure for preventing light leakage through the decorative ring shown; Figure 3 for Figure 2 The decorative ring back panel structure shown is in a cross-sectional view along line AA; Figure 4 for Figure 2 The diagram shows the hierarchical structure of the decorative ring back panel structure that prevents light leakage. Figure 5 for Figure 2 The diagram shows another layer of the back panel structure that prevents light leakage through the decorative ring. Figure 6 for Figure 1 The diagram shows another layer of the decorative ring back panel structure that prevents light leakage. Detailed Implementation

[0019] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: Please see Figures 1 to 5 As shown, this is a backplate structure 10 for preventing light leakage of a decorative ring according to an embodiment of the present disclosure. It includes a laminated backplate 100, a circular groove 101 on one side of the laminated backplate 100, a circular protrusion 110 on one side of the laminated backplate 100 corresponding to the circular groove 101, a decorative ring mounting hole 102 at the bottom of the circular groove 101, the circular groove 101 for mounting a camera decorative ring, and an irregular arc surface 120 formed circumferentially on the inner wall of the decorative ring mounting hole 102. The irregular arc surface 120 is a complex curved surface with continuous arc surfaces and multiple chamfers. A first chamfer surface 121 is formed on the side of the irregular arc surface 120 adjacent to the circular groove 101, and a second chamfer surface 122 is formed on the side of the irregular arc surface 120 away from the circular groove 101. The decorative ring mounting hole 102 is adapted to the edge of the camera decorative ring.

[0023] Further, the laminated backing plate 100 includes a surface composite layer 130, an electroplated layer 140, a first cover ink layer 150, a thermosetting adhesive layer 160, a second cover ink layer 170, and a polycarbonate layer 180 stacked sequentially; wherein, the thickness of the first cover ink layer 150 is greater than that of the second cover ink layer 170, the thickness of the first cover ink layer 150 is 30μm-40μm, the thickness of the second cover ink layer 170 is 20μm-30μm, and the thickness of the thermosetting adhesive layer 160 is 20μm-30μm.

[0024] In this embodiment, the polycarbonate layer 180 serves as a substrate, providing structural support and toughness. The second cover ink layer 170 serves as a bottom light-shielding layer, providing basic light-shielding capability. The thickness of the first cover ink layer 150 is greater than that of the second cover ink layer 170, enabling the first cover ink layer 150 to provide a stronger light-shielding effect. The thermosetting adhesive layer 160 is used to bridge the first cover ink layer 150 and the second cover ink layer 170. The thermosetting adhesive layer 160 softens and flows when heated, allowing it to better penetrate and fill small irregularities, forming a smooth transition layer. This allows the first cover ink layer 150 to adhere more evenly to the thermosetting adhesive. The electroplated layer 140 is used to provide a metallic appearance, achieving a high-end visual effect. The surface composite layer 130 is used to protect the underlying electroplated layer 140 and provide a good tactile feel.

[0025] The aforementioned backplate structure 10 for preventing light leakage in the decorative ring forms a double light-shielding effect through the layering of a first cover ink layer 150 and a second cover ink layer 170. When one cover ink layer has defects at a specific angle or chamfer, the other cover ink layer can also provide light-shielding, significantly improving the light-shielding effect on the edges of various complex decorative rings. By coating the second cover ink layer with a thermosetting adhesive layer 160, the thermosetting adhesive layer 160 provides a flat adhesion substrate for the first cover ink layer 150, allowing the first cover ink layer 150 to be evenly covered by the thermosetting adhesive layer 160, thereby improving the light-shielding effect of the first cover ink layer 150 on the edges of the decorative ring.

[0026] like Figure 3 As shown, in one embodiment, the inner wall of the annular groove 101 is formed with an arc-shaped mounting surface 1011. In this embodiment, the arc-shaped mounting surface 1011 makes the transition area between the annular protrusion 110 and the decorative ring naturally arc-shaped, reducing the risk of layer structure delamination at corners and thus reducing coating defects.

[0027] like Figure 3 As shown, in one embodiment, an arc transition surface 111 is formed between the annular protrusion 110 and the main body of the laminated backing plate 100. In this embodiment, the smooth transition of the arc transition surface 111 eliminates the rough feel of the right-angle step, and the arc transition surface 111 effectively disperses stress, ensuring that the thickness of each layer of material is uniform in the transition area, thereby improving the long-term stability of each layer of the laminated backing plate 100.

[0028] like Figure 1As shown, in one embodiment, the inner wall of the decorative ring mounting hole 102 is further provided with a fixing member 1021 integrally formed with the main body of the laminated back plate 100. The fixing member 1021 is used to fix the camera decorative ring. In this embodiment, the fixing member 1021 has a fixing hole, which is used to mechanically fix the camera decorative ring to the camera decorative ring, thereby improving the connection strength between the camera decorative ring and the laminated back plate 100. The fixing member 1021 is composed of a surface composite layer 130, an electroplated layer 140, a first cover ink layer 150, a thermosetting adhesive layer 160, a second cover ink layer 170, and a polycarbonate layer 180. like Figure 1 As shown, in one embodiment, there are multiple fasteners 1021, which are arranged sequentially along the circumference of the decorative ring mounting hole 102. By simultaneously fixing the camera decorative ring with multiple fasteners 1021, the fit between the camera decorative ring and the stacked back plate 100 is ensured, thereby improving the light-blocking effect between the stacked back plate 100 and the camera decorative ring.

[0029] like Figure 1 As shown, in one embodiment, the annular groove 101 has a thinning groove 103 near the edge of the decorative ring mounting hole 102. In this embodiment, the thickness of the laminated backplate 100 is reduced in the area of ​​the thinning groove 103 to provide a mounting cavity for the camera module assembly. The first cover ink layer 150 and the second cover ink layer 170 of the laminated backplate 100 provide layered light shielding, thus avoiding light leakage problems in the area of ​​the thinning groove 103.

[0030] like Figure 4 and Figure 5 As shown, in one embodiment, the surface composite layer 130 includes a reinforcing liquid layer 131, a composite board layer 132, a layer 133, and a transfer layer 134 stacked sequentially. The electroplating layer 140 is electroplated on the side of the transfer layer 134 opposite to the layer 133. In this embodiment, the reinforcing liquid layer 131 provides wear resistance, scratch resistance, and stain resistance; the composite board layer 132 serves as a substrate layer to provide physical support; the layer 133 can form logo information; and the transfer layer 134 is used to form fine patterns. Further, the specific process flow is as follows: composite board → transfer → electroplating → cover 1 → PC → cover 2 → thermosetting adhesive pre-bonding → hot press heating bonding → debubbling → high-gloss coating → CNC processing.

[0031] like Figure 4As shown, in one embodiment, the thickness of the reinforcing liquid layer 131 is 12μm-17μm, the thickness of the composite plate layer 132 is 0.35mm-0.4mm, and the thickness of the layer 133 is 3μm-5μm. In this embodiment, the thickness of the reinforcing liquid may be, but is not limited to, 15μm, the thickness of the composite plate layer 132 may be, but is not limited to, 0.38mm, and the thickness of the layer 133 may be, but is not limited to, 4μm.

[0032] like Figure 4 As shown, in one embodiment, the thickness of the electroplated layer 140 is 200nm-450nm. In this embodiment, the electroplated layer 140 is used to provide a metallic appearance and achieve a high-end visual effect; the thickness of the electroplated layer 140 may be, but is not limited to, 250nm.

[0033] like Figure 4 As shown, in one embodiment, the thickness of the polycarbonate layer 180 is 0.08 mm to 0.15 mm. In this embodiment, the thickness of the polycarbonate layer 180 may be, but is not limited to, 0.1 mm.

[0034] This application also provides a mobile phone back panel 100, characterized in that it includes the back panel structure 10 with a decorative ring for preventing light leakage as described in any of the above embodiments. In this embodiment, the sandwich structure of the first cover ink layer 150, the thermosetting adhesive layer 160, and the second cover ink layer 170 solves the problem of insufficient cover ink coverage caused by the irregular arc surface 120 at the edge of the camera decorative ring, thus achieving an all-round light leakage prevention effect.

[0035] Compared with the prior art, this disclosure has at least the following advantages: The aforementioned backplate structure 10 for preventing light leakage in the decorative ring forms a double light-shielding effect through the layering of a first cover ink layer 150 and a second cover ink layer 170. When one cover ink layer has defects at a specific angle or chamfer, the other cover ink layer can also provide light-shielding, significantly improving the light-shielding effect on the edges of various complex decorative rings. By coating the second cover ink layer with a thermosetting adhesive layer 160, the thermosetting adhesive layer 160 provides a flat adhesion substrate for the first cover ink layer 150, allowing the first cover ink layer 150 to be evenly covered by the thermosetting adhesive layer 160, thereby improving the light-shielding effect of the first cover ink layer 150 on the edges of the decorative ring.

[0036] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A back panel structure for preventing light leakage of a decorative ring, characterized by, The device includes a laminated back plate, one side of which has an annular groove, and the other side of which has an annular protrusion. A decorative ring mounting hole is provided at the bottom of the annular groove. The annular groove is used to mount a camera decorative ring. The inner wall of the decorative ring mounting hole is formed with an irregular arc surface along the circumference. A first chamfer surface is formed on the side of the irregular arc surface adjacent to the annular groove, and a second chamfer surface is formed on the side of the irregular arc surface away from the annular groove. The decorative ring mounting hole is adapted to the edge of the camera decorative ring. The laminated back panel comprises a surface composite layer, an electroplated layer, a first cover ink layer, a thermosetting adhesive layer, a second cover ink layer, and a polycarbonate layer stacked sequentially. Wherein, the thickness of the first cover ink layer is greater than that of the second cover ink layer, the thickness of the first cover ink layer is 30μm-40μm, the thickness of the second cover ink layer is 20μm-30μm, and the thickness of the thermosetting adhesive layer is 20μm-30μm.

2. The back panel structure for preventing light leakage of the decorative ring according to claim 1, characterized in that, The inner wall of the annular groove has an arc-shaped mounting surface.

3. The light leakage preventing back panel structure of the decorative ring according to claim 1, wherein An arc transition surface is formed between the annular protrusion and the main body of the laminated back plate.

4. The light leakage preventing back panel structure of claim 1, wherein, The inner wall of the mounting hole of the decorative ring is also provided with a fixing member, which is used to fix the camera decorative ring.

5. The light leakage preventing back panel structure of the decorative ring according to claim 4, wherein The number of fasteners is multiple, and the multiple fasteners are arranged sequentially along the circumference of the mounting holes of the decorative ring.

6. The light leakage preventing back panel structure of claim 1, wherein, The surface composite layer comprises a reinforcing liquid layer, a composite plate layer, a layer, and a transfer layer stacked sequentially, wherein the electroplating layer is electroplated on the side of the transfer layer opposite to the layer.

7. The back panel structure for preventing light leakage of the decorative ring according to claim 6, characterized in that, The thickness of the reinforcing liquid layer is 12μm-17μm, the thickness of the composite plate layer is 0.35mm-0.4mm, and the thickness of the coating layer is 3μm-5μm.

8. The light leakage preventing back panel structure of claim 1, wherein, The thickness of the electroplated layer is 200nm-450nm.

9. The light leakage preventing back panel structure of claim 1, wherein, The thickness of the polycarbonate layer is 0.08mm-0.15mm.

10. A cell phone backplane, characterized by, The device includes a camera decorative ring and a backplate structure for preventing light leakage of the decorative ring as described in any one of claims 1-9, wherein the camera decorative ring is installed in the annular groove and a portion of the camera decorative ring passes through the decorative ring mounting hole.

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