Mobile phone battery cover with bendable digital display function

Abstract

The utility model relates to mobile phone accessory technical field especially, a kind of mobile phone battery cover with bendable digital display function, it is characterized by, including glass layer, OCA optical adhesive layer, luminous film and decorative layer;Glass layer, OCA optical adhesive layer, luminous film and decorative layer are sequentially laminated from outside to inside;Glass layer and luminous film are bonded by OCA optical adhesive layer;Luminous film and decorative layer are bonded by bonding layer;Compared with prior art, by integrating luminous film, break through the limitation of traditional battery cover static decoration, can dynamically display electric quantity, notice, time and other digital information, improve interactive experience;Adopt luminous film to replace traditional LED screen, combined with ultrathin glass layer and flexible base material, overall thickness can be controlled at 0.5-1mm, and can adapt to bending form;Glass layer adopts curved surface design, and the overall arc of battery cover is matched, and still keep display function normal when bending radius is ≤5mm, meet the integrated demand of curved fuselage.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone accessories technology, and in particular to a mobile phone battery cover with a bendable digital display function. Background Technology

[0002] The battery cover is the shell structure on the back of a mobile phone used to cover and protect the battery components, and it is also an important part of the appearance design. Its core functions include physical protection (isolating dust, moisture and external impact), structural support (ensuring a stable connection between the battery and the body) and decorative aesthetics (shaping the product's visual style through materials, textures and colors). With the evolution of integrated mobile phone design, the battery cover has gradually formed the overall shape of the body together with the mid-frame and screen. Its design directly affects the phone's grip, weight control and brand recognition.

[0003] Traditional mobile phone battery covers mostly use a static decorative solution of film bonding to glass, which cannot realize dynamic photoelectric display function; although the existing LED screen solution can realize dynamic display, it has problems such as large thickness, inflexibility, and difficulty in adapting to curved battery covers; therefore, there is an urgent need to develop an ultra-thin, flexible integrated display battery cover structure. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a mobile phone battery cover with a bendable digital display function.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mobile phone battery cover with a bendable digital display function is characterized in that it includes a glass layer, an OCA optical adhesive layer, a light-emitting film, and a decorative layer; the glass layer, the OCA optical adhesive layer, the light-emitting film, and the decorative layer are stacked sequentially from the outside to the inside; the glass layer and the light-emitting film are bonded together by the OCA optical adhesive layer; and the light-emitting film and the decorative layer are bonded together by an adhesive layer.

[0007] Furthermore, the decorative layer includes a fiberglass substrate and a decorative element, the decorative element being placed on the fiberglass substrate.

[0008] Furthermore, the adhesive layer is the adhesive layer that is part of the decorative layer.

[0009] Furthermore, the decorative element is an ink-printed layer or a transfer pattern layer.

[0010] Furthermore, the adhesive layer is made of acrylic resin or silicone rubber.

[0011] Furthermore, the decorative element forms a partially light-transmitting area on the fiberglass substrate, which corresponds to the display area of ​​the light-emitting film, so that the content displayed by the light-emitting film can be seen through the decorative layer.

[0012] Furthermore, the glass layer is curved glass, and its curvature matches the overall curvature of the mobile phone battery cover. The overall structure after stacking maintains normal display function even when the curvature radius is ≤5mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Compared with existing technologies, by integrating a light-emitting film, the limitations of static decoration in traditional battery covers are overcome, allowing for dynamic display of digital information such as battery level, notifications, and time, thus enhancing the interactive experience. Replacing the traditional LED screen with a light-emitting film, combined with an ultra-thin glass layer and a flexible substrate, the overall thickness can be controlled within 0.5-1mm and can adapt to curved shapes. The glass layer features a curved design that matches the overall curvature of the battery cover, maintaining normal display function even with a bending radius ≤5mm, meeting the integrated requirements of curved bodies. The decorative layer achieves decorative effects such as texture and color through decorative components, while also ensuring clear visibility of the displayed content through localized light-transmitting areas in conjunction with the light-emitting film, balancing aesthetics and functionality. Each layer is sequentially bonded using an OCA optical adhesive layer and an adhesive layer, ensuring interlayer bonding strength and adapting to stress changes during bending, thereby extending service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the mobile phone battery cover with a bendable digital display function proposed in this utility model.

[0016] In the diagram: 1-glass layer, 2-OCA optical adhesive layer, 3-luminescent film, 4-decorative layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 As shown, this embodiment provides a mobile phone battery cover with a bendable digital display function, characterized in that it includes a glass layer 1, an OCA optical adhesive layer 2, a light-emitting film 3, and a decorative layer 4; the glass layer 1, the OCA optical adhesive layer 2, the light-emitting film 3, and the decorative layer 4 are stacked sequentially from the outside to the inside; the glass layer 1 and the light-emitting film 3 are bonded together by the OCA optical adhesive layer 2; the light-emitting film 3 and the decorative layer 4 are bonded together by an adhesive layer.

[0019] Overall, glass layer 1 uses ultra-thin flexible curved glass, and its curvature is consistent with the overall curvature of the phone battery cover. Tests show that when the bending radius is 5mm, glass layer 1 does not break or crack and can still maintain structural integrity. The outer surface of glass layer 1 can be treated with anti-fingerprint coating to improve the grip and dirt resistance. OCA optical adhesive layer 2 uses optically transparent tape with a light transmittance of ≥90%. On the one hand, it can achieve a tight bond between glass layer 1 and light-emitting film 3, and on the other hand, it can ensure that the display light of light-emitting film 3 can penetrate to the outside of glass layer 1 without attenuation. Light-emitting film 3 is a flexible OLED light-emitting film 3, which can realize the display of dynamic content such as numbers and icons, and has the characteristics of bendability to adapt to the curved shape of glass layer 1. The adhesive layer uses polyurethane adhesive to bond light-emitting film 3 and decorative layer 4. Because polyurethane adhesive has good elasticity and bending resistance, it can provide buffer interlayer stress when the battery cover is bent, preventing delamination.

[0020] like Figure 1 As shown, in this embodiment, the decorative layer 4 includes a fiberglass substrate and a decorative element, with the decorative element placed on the fiberglass substrate.

[0021] Specifically, decorative layer 4 includes a fiberglass substrate and decorative elements. The fiberglass substrate is made of fiberglass cloth composite substrate with a thickness of 0.1-0.2mm, which has high strength (tensile strength ≥300MPa) and good flexibility, and can deform synchronously with the bending of the battery cover. The decorative elements are metal foils (such as aluminum foil or copper foil with a thickness of 0.01-0.03mm), which are fixed to the inner surface of the fiberglass substrate by a pressing process.

[0022] like Figure 1 As shown, in this embodiment, the adhesive layer is the adhesive layer that is part of the decorative layer 4.

[0023] Specifically, the adhesive layer is the adhesive layer that comes with the decorative layer 4 (i.e., epoxy resin adhesive pre-coated on the outer surface of the fiberglass substrate). The epoxy resin adhesive is 0.04-0.06mm thick, has high-strength adhesive performance (peel strength ≥5N / cm), and has good temperature resistance after curing (stable performance from -40℃ to 85℃). This simplifies the bonding process between the light-emitting film 3 and the decorative layer 4 and reduces production difficulty.

[0024] like Figure 1 As shown, in this embodiment, the decorative element is an ink printing layer or a transfer pattern layer.

[0025] Specifically, the decorative element is an ink printing layer, which uses screen printing technology to print colored ink onto the inner surface of the fiberglass substrate. The ink printing layer can form decorative effects such as gradient colors and textured patterns (such as frosted texture and star pattern), enhancing the visual diversity of the battery cover.

[0026] Decorative layer 4 can also be a transfer pattern layer, which uses a heat transfer process to transfer a preset pattern (such as a brand logo or texture pattern) to the inner surface of the fiberglass substrate. The transfer pattern layer has high pattern precision (resolution ≥ 300 dpi), which can achieve fine display of complex textures and enhance brand recognition.

[0027] like Figure 1 As shown, in this embodiment, the adhesive layer is made of acrylic glue or silicone rubber.

[0028] Specifically, the adhesive layer can also be made of acrylic resin or silicone rubber. Acrylic resin has good compatibility with multiple substrates such as metal, plastic and glass, and can balance the strength and impact resistance between the glass back cover and the metal frame; while silicone rubber can improve the waterproof performance of the glass back cover.

[0029] like Figure 1 As shown, in this embodiment, the decorative element forms a partially light-transmitting area on the fiberglass substrate, which corresponds to the display area of ​​the light-emitting film 3, so that the content displayed on the light-emitting film 3 can be seen through the decorative layer 4.

[0030] Specifically, the decorative parts (ink printing layer) are printed with transparent ink in the corresponding display area of ​​the light-emitting film 3, and with opaque colored ink in the non-display area. This allows the display light of the light-emitting film 3 to penetrate the decorative layer 4 through the transparent ink area, ensuring display clarity while achieving personalized decoration through colored ink.

[0031] The transfer pattern layer is not transferred at the position corresponding to the display area of ​​the light-emitting film 3 (that is, the transparent area of ​​the fiberglass substrate is retained), so that the display light can pass through directly and ensure the visibility of the dynamic display content.

[0032] like Figure 1 As shown, in this embodiment, the glass layer 1 is curved glass, and its curvature matches the overall curvature of the mobile phone battery cover. The overall structure after stacking still maintains normal display function when the curvature radius is ≤5mm.

[0033] Specifically, reinforced flexible glass is used. Tests show that when the bending radius is 3mm, the glass layer 1 still has no structural damage, and the display content of the light-emitting film 3 (such as dynamic battery bar and notification flashing icons) is not distorted or has no brightness decay, further adapting to the design requirements of ultra-curved mobile phone battery covers.

[0034] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0036] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A mobile phone battery cover with a bendable digital display function, characterized in that, It includes a glass layer (1), an OCA optical adhesive layer (2), a light-emitting film (3), and a decorative layer (4); the glass layer (1), the OCA optical adhesive layer (2), the light-emitting film (3), and the decorative layer (4) are stacked sequentially from the outside to the inside; the glass layer (1) and the light-emitting film (3) are bonded together by the OCA optical adhesive layer (2); the light-emitting film (3) and the decorative layer (4) are bonded together by an adhesive layer.

2. The mobile phone battery cover with a flexible digital display function according to claim 1, characterized in that, The decorative layer (4) includes a fiberglass substrate and a decorative element, with the decorative element placed on the fiberglass substrate.

3. The mobile phone battery cover with a flexible digital display function according to claim 1, characterized in that, The adhesive layer is the adhesive layer that comes with the decorative layer (4).

4. The mobile phone battery cover with a flexible digital display function according to claim 2, characterized in that, The decorative element is an ink-printed layer or a transfer pattern layer.

5. The mobile phone battery cover with a flexible digital display function according to claim 1 or 3, characterized in that, The adhesive layer is made of acrylic resin or silicone rubber.

6. The mobile phone battery cover with a flexible digital display function according to claim 2 or 4, characterized in that, The decorative element forms a partially light-transmitting area on the fiberglass substrate, which corresponds to the display area of ​​the light-emitting film (3), so that the content displayed by the light-emitting film (3) can penetrate the decorative layer (4) and be visible to the outside.

7. The mobile phone battery cover with a flexible digital display function according to claim 1, characterized in that, The glass layer (1) is curved glass, and its curvature matches the overall curvature of the mobile phone battery cover. The overall structure after stacking still maintains normal display function when the curvature radius is ≤5mm.

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