An external hanging water droplet screen structure
Patent Information
- Application Number
- CN202522543801.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-01
AI Technical Summary
即使功能片使用的是高透过率材料，其仍然会一定程度地衰减光线，导致红外光感孔或摄像头孔的总体透光率下降，进而影响红外传感的精度和前置摄像头的成像质量
本申请提供的一种外挂式水滴屏结构，通过在触摸功能片上对应红外光感孔或摄像头孔的位置进行镂空处理，完全避免了触摸功能片材料对光线的阻挡和衰减，使得红外光和可见光能够无阻碍地通过，最大限度地保证了传感器的灵敏度和摄像头的成像质量；且在镂空区贴附保护膜，有效防止了在整机装配完成前，灰尘、杂质通过镂空区进入屏幕内部，污染盖板内表面或内部元件，保证了产品的清洁度和良品率；并且保护膜在对应孔位区域进行了除胶处理，形成悬空的无胶区。这一设计从根本上避免了保护膜自身的胶粘剂接触到盖板的功能孔区域，防止了因胶残留导致的表面脏污、透光率下降或光圈异常等问题，提升了产品的可靠性。
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Figure CN224907359U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of waterdrop screen technology, specifically relating to an external waterdrop screen structure. Background Technology
[0002] With the widespread adoption of smartphones and other mobile devices, users are increasingly demanding higher screen-to-body ratios. In order to maximize the screen display area while accommodating essential functional components such as front-facing cameras and infrared light sensors, irregular screen designs such as "waterdrop screens" and "notch screens" have emerged.
[0003] In terms of touchscreen implementation, there are mainly two types: out-cell and in-cell / on-cell. Out-cell touchscreens involve attaching a separate touch panel to the top of the display module; this technology is mature and has relatively low manufacturing costs. To meet the requirements of overall device stacking and assembly, the touch panel is typically required to be fully laminated to the cover lens (approximately 1:1). This full-coverage bonding method ensures that there are no gaps at the screen edges during assembly, improving overall aesthetics and structural strength.
[0004] However, this full-coverage bonding method introduces a new problem. The cover plate typically has openings for the infrared light sensor (infrared light sensor hole) and the front-facing camera (camera hole). When the touch panel completely covers the cover plate, the substrate and wiring of the panel inevitably overlap these openings. Even if the panel uses a high-transmittance material, it will still attenuate light to some extent, leading to a decrease in the overall transmittance of the infrared light sensor hole or camera hole, thus affecting the accuracy of the infrared sensor and the imaging quality of the front-facing camera.
[0005] To address the above issues, this application designs an external waterdrop screen structure to solve the problems in the prior art, such as the overall light transmittance of the infrared light sensing hole or camera hole being reduced, which in turn affects the accuracy of infrared sensing and the imaging quality of the front camera. Utility Model Content
[0006] This application aims to address at least one of the technical problems existing in the prior art or related technologies.
[0007] To this end, this application designs an external waterdrop screen structure to facilitate full bonding between the touch function plate and the cover plate, while effectively ensuring the light transmittance of the infrared light sensing hole or camera hole, and ensuring the accuracy of infrared sensing and the imaging quality of the front camera.
[0008] This application provides an external waterdrop screen structure, comprising: a cover plate, the front of which is a first surface and the back of which is a second surface, and at least one functional hole is formed in the middle of the surface of the cover plate; a touch function piece disposed below the cover plate, and a cutout area is provided on the touch function piece corresponding to the position of the functional hole; a protective film attached to the cutout area, and the protective film completely covers the cutout area, the area of the protective film corresponding to the functional hole is an adhesive-free area, the protective film has an adhesive area around its periphery, and the protective film adheres to the touch function piece through the adhesive area around its periphery; optical adhesive, adhered between the touch function piece and the second surface of the cover plate; and a display module installed below the touch function piece.
[0009] In some possible embodiments, the functional aperture includes an infrared light-sensing aperture or a camera aperture.
[0010] In some possible embodiments, the protective film is a transparent polymer film.
[0011] In some possible embodiments, the thickness of the protective film is between 25 μm and 100 μm.
[0012] In some possible embodiments, the touch function sheet is a glass substrate or a thin film substrate.
[0013] In some possible embodiments, the area of the adhesive-free region of the protective film is greater than or equal to the opening area of the functional hole on the second surface of the cover plate.
[0014] In some possible embodiments, the adhesive-free area of the protective film is suspended above the functional hole, and the adhesive-free area does not contact the second surface of the cover plate.
[0015] Compared with the prior art, the technical solution provided in this application has at least the following beneficial effects: This application provides an external waterdrop screen structure that, by hollowing out the corresponding infrared light sensor hole or camera hole on the touch function piece, completely avoids the blocking and attenuation of light by the touch function piece material, allowing infrared and visible light to pass through unimpeded, maximizing sensor sensitivity and camera imaging quality. Furthermore, a protective film is attached to the hollowed-out area, effectively preventing dust and impurities from entering the screen interior through the hollowed-out area before the entire device is assembled, thus preventing contamination of the inner surface of the cover plate or internal components, ensuring product cleanliness and yield. The protective film undergoes adhesive removal treatment in the corresponding hole areas, forming a suspended, adhesive-free area. This design fundamentally avoids the adhesive of the protective film itself coming into contact with the functional hole area of the cover plate, preventing surface contamination, reduced light transmittance, or abnormal aperture caused by adhesive residue, thereby improving product reliability.
[0016] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description
[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of an overall structure with an infrared light sensor hole for an external waterdrop screen according to some embodiments of this application; Figure 2 This is a schematic diagram of the overall structure with camera hole of an external waterdrop screen structure according to some embodiments of this application; Figure 3 This is a schematic diagram of the overall side view of an external waterdrop screen structure according to some embodiments of this application; Figure 4 This is a schematic diagram of a touch function sheet structure of an external waterdrop screen structure according to some embodiments of this application; Figure 5 This is a partially enlarged structural diagram of an external waterdrop screen structure according to some embodiments of this application.
[0018] Figure label: Cover plate 1, first surface 101, second surface 102, infrared light sensing hole 103, camera hole 104, touch function piece 2, hollow area 201, protective film 3, adhesive area 301, optical adhesive 4, display module 5. Detailed Implementation
[0019] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0020] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0021] The following reference Figures 1 to 5 This application describes an external waterdrop screen structure provided according to some embodiments.
[0022] In some embodiments, an external waterdrop screen structure is characterized by comprising: a cover plate 1, the front side of which is a first surface 101 and the back side is a second surface 102, and at least one functional hole is provided at the middle position of the surface of the cover plate 1; a touch function piece 2, disposed below the cover plate 1, and a hollow area 201 is provided on the touch function piece 2 corresponding to the position of the functional hole; the touch function piece 2 is a glass substrate or a thin film substrate.
[0023] In this embodiment, the touch function piece 2 is the core component of the external touchscreen, and its substrate can be glass or a flexible film. The touch function piece 2 is fully bonded to the second surface 102 of the cover plate 1 through a layer of transparent optical adhesive 4, such as OCA optical adhesive, to achieve a 1:1 full coverage and ensure that there are no gaps at the screen edges.
[0024] In some embodiments, the protective film 3 is attached to the cutout area 201 and completely covers the cutout area 201. The area of the protective film 3 corresponding to the functional hole is a non-adhesive area. The protective film 3 has an adhesive area 301 around its periphery and is adhered to the touch function piece 2 through the adhesive area 301 around its periphery. The functional hole includes an infrared light sensing hole 103 or a camera hole 104.
[0025] In this embodiment, the cover plate 1 is typically made of high-strength glass, such as high-aluminosilicate glass, and has a first surface 101 facing the user and a second surface 102 opposite to the first surface. The upper part of the cover plate 1 is typically designed as a teardrop-shaped groove, within which an infrared light-sensing hole 103 or a camera hole 104 is formed. In practical applications, the number and shape of the holes can vary according to specific design requirements. On the touch function piece 2, a hollow area 201 is precisely processed using laser cutting at the position corresponding to the infrared light-sensing hole 103 or the camera hole 104 of the cover plate 1. The shape and size of the hollow area 201 are basically consistent with the projected outline of the function hole, or slightly larger than the function hole, to ensure that the light path of the function hole is not completely blocked by the touch function piece 2.
[0026] In some embodiments, the protective film 3 is a transparent polymer film; the thickness of the protective film 3 is between 25 μm and 100 μm.
[0027] In this embodiment, to address the dust prevention issue caused by the cutout, a transparent protective film 3 is attached to the cutout area 201 of the touch function piece 2. This protective film 3 is preferably a 50μm thick transparent PET polyester film, with pressure-sensitive adhesive coated on one side. Before attachment, the protective film 3 is pre-treated by removing the pressure-sensitive adhesive from the area corresponding to the infrared light-sensing hole 103 or the camera hole 104, creating an adhesive-free area. The adhesive layer around the remaining protective film 3 constitutes the adhesive-coated area 301.
[0028] In some embodiments, optical adhesive 4 is adhered between the touch functional piece 2 and the second surface 102 of the cover plate 1; the display module 5 is mounted below the touch functional piece 2; the area of the adhesive-free region of the protective film 3 is greater than or equal to the opening area of the functional hole on the second surface 102 of the cover plate 1. The adhesive-free region of the protective film 3 is suspended above the functional hole and does not contact the second surface 102 of the cover plate 1.
[0029] In this embodiment, during application, the adhesive-free area of the protective film 3 is precisely aligned with the cutout area 201 of the touch function piece 2. Then, the protective film 3 is firmly adhered to the solid area of the touch function piece 2 surrounding the cutout area 201 via the adhesive area 301. Thus, the adhesive-free area of the protective film 3 is suspended precisely above the infrared light-sensing hole 103 or camera hole 104 of the cover plate 1, maintaining a tiny gap with the second surface 102 of the cover plate 1, without contact. Finally, the touch function piece 2, having undergone the above processing, is bonded to the cover plate 1 using optical adhesive 4, and then assembled with the display module 5 below to form a complete external waterdrop screen module.
[0030] Throughout the assembly and subsequent final assembly process, the protective film 3 effectively prevents dust from entering through the perforated area 201. Due to the presence of the adhesive-free area, adhesive will not contaminate the cover surface of the functional hole area, ensuring optimal light transmission. Once the final assembly of the entire device is completed, the protective film 3 has fulfilled its purpose, and its presence does not affect any optical performance of the final product.
[0031] In this application, it should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0033] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The term "multiple" refers to two or more, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0035] In this application, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An external waterdrop screen structure, characterized in that, include: Cover plate (1), the front side of the cover plate (1) is a first surface (101) and the back side is a second surface (102), and at least one functional hole is provided in the middle position of the surface of the cover plate (1); A touch function piece (2) is located below the cover plate (1), and a hollow area (201) is provided on the touch function piece (2) corresponding to the position of the function hole. A protective film (3) is attached to the hollow area (201) and the protective film (3) completely covers the hollow area (201). The area of the protective film (3) corresponding to the functional hole is a non-adhesive area. The protective film (3) has an adhesive area (301) around its periphery and the protective film (3) adheres to the touch function piece (2) through the adhesive area (301) around its periphery. Optical adhesive (4) is bonded between the touch function piece (2) and the second surface (102) of the cover plate (1); The display module (5) is installed below the touch function piece (2).
2. The external waterdrop screen structure according to claim 1, characterized in that, The functional holes include an infrared light sensing hole (103) or a camera hole (104).
3. The external waterdrop screen structure according to claim 1, characterized in that, The protective film (3) is a transparent polymer film.
4. The external waterdrop screen structure according to claim 1, characterized in that, The thickness of the protective film (3) is between 25 μm and 100 μm.
5. The external waterdrop screen structure according to claim 1, characterized in that, The touch function piece (2) is a glass substrate or a thin film substrate.
6. The external waterdrop screen structure according to claim 1, characterized in that, The area of the adhesive-free region of the protective film (3) is greater than or equal to the opening area of the functional hole on the second surface (102) of the cover plate (1).
7. The external waterdrop screen structure according to claim 1, characterized in that, The adhesive-free area of the protective film (3) is suspended above the functional hole, and the adhesive-free area does not contact the second surface (102) of the cover plate (1).