Backlight module integrated with NFC function and wearable electronic product

Abstract

The utility model discloses a backlight module integrated with an NFC function. A black adhesive layer, a gap layer, an upper brightness enhancement film, a lower brightness enhancement film, a diffusion film, a light guide plate, a double-sided adhesive layer, a reflecting film, an NFC antenna layer and a backlight adhesive frame used for supporting and fixing the components are sequentially stacked from top to bottom. The NFC antenna layer comprises an NFC FPC (Flexible Printed Circuit) layer and a ferrite layer, the NFC antenna part is responsible for realizing a near field communication function, and the ferrite layer is used for shielding electromagnetic interference and ensuring the stability of the NFC function. Compared with the prior art, the NFC function is directly integrated into the backlight module, the space for independently arranging the NFC module is saved, the number of material assemblies is reduced, and therefore the product thickness is reduced. After the backlight module is assembled with an electronic product, the wearable electronic product is more compact, light and thin. And secondly, the combination of the backlight module and the NFC function realizes the high integration of functional modules, reduces material components, simplifies the assembly and production flow, reduces the manufacturing cost, and simplifies the production process.

Description

Technical Field

[0001] This utility model belongs to the field of backlight modules, specifically relating to a backlight module with integrated NFC function and a wearable electronic product with an integrated NFC function backlight module. Background Technology

[0002] As wearable electronic products such as smartwatches and smart glasses become increasingly functional, their integration level is also rising. Wearable electronic products have high requirements for size and weight; to make these products thinner, lighter, and more comfortable, the design must not only improve functional integration but also reduce module thickness without compromising functionality. However, current technology has the following drawbacks:

[0003] Discrete designs increase thickness and complexity: In existing technologies, backlight modules and NFC modules are usually designed separately, resulting in multiple additional components and occupying a large amount of space. In particular, the discrete design of the NFC module and the display module makes the overall product thicker, which cannot effectively meet the demand for thinner and lighter wearable electronic devices.

[0004] Material waste: To achieve NFC communication functionality, existing designs require additional NFC modules and antennas, which not only increases material costs but also occupies extra space, affecting the compactness of electronic products.

[0005] Therefore, the existing design of separate backlight module and NFC module has disadvantages such as low integration, wasted space, and large thickness, and a new design solution is urgently needed to solve these problems. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of space waste and increased thickness caused by the separation of backlight module and NFC module in the prior art, and to provide a backlight module with integrated NFC function and wearable electronic products with integrated NFC function.

[0007] To solve the above technical problems, the technical method adopted by the present invention is as follows: The present invention discloses a backlight module integrating NFC function, which is stacked from top to bottom as follows: a black adhesive layer, a gap layer, an upper brightness enhancement film, a lower brightness enhancement film, a diffusion film, a light guide plate, a double-sided adhesive layer, a reflective film, an NFC antenna layer, and a backlight adhesive frame for supporting and fixing the above components.

[0008] The NFC antenna layer includes an NFC FPC layer and a ferrite layer. The NFC FPC layer forms a coil by winding wires and leads it to the outside. The coil is responsible for realizing the near-field communication function. The ferrite layer is used to enhance the antenna signal strength, shield electromagnetic interference, and ensure the stability of the NFC function.

[0009] Furthermore, the NFC FPC layer is a flexible circuit board, which is fixed to the backlight frame by adhesive bonding, and extends to the bottom layer of the backlight module as a whole.

[0010] Furthermore, the NFC FPC layer is bonded to the backlight frame using high-strength conductive adhesive.

[0011] Furthermore, the length of the NFC antenna layer matches the width of the reflective film.

[0012] Furthermore, a release film protective layer is provided on top of the black adhesive layer.

[0013] Furthermore, a release film tear handle is provided on one side of the release film protective layer.

[0014] Furthermore, an LED light group is provided at the bottom of the light guide plate, and the LED light group is fixed to the light guide plate by a single-sided adhesive PET layer.

[0015] Furthermore, the black adhesive layer is a thin film located on the top layer of the backlight module; the gap layer is a thin film disposed between the black adhesive layer and the upper brightness enhancement film; the upper brightness enhancement film is a transparent, curved film disposed below the gap layer; the lower brightness enhancement film is a planar film disposed below the upper brightness enhancement film; the diffusion film is a uniform thin film disposed below the lower brightness enhancement film; the light guide plate is a rectangular thin plate disposed below the diffusion film; the reflective film is a rectangular thin film disposed below the light guide plate; and the backlight adhesive frame is an annular frame located on the periphery of the backlight module.

[0016] The present invention also discloses a wearable electronic product using a backlight module with integrated NFC function, the wearable electronic product comprising: the aforementioned backlight module with integrated NFC function, the backlight module integrating near-field communication function and serving as part of a display module;

[0017] The backlight module connects to the processor, wireless module, and sensors of electronic products via an interface, and supports NFC functionality, including mobile payment and data transmission.

[0018] Furthermore, the wearable electronic product is a smartwatch or smart glasses, and the backlight module with integrated NFC function is used for the integration of display and NFC communication functions.

[0019] Beneficial effects:

[0020] Compared to existing technologies, this invention directly integrates NFC functionality into the backlight module, saving space compared to a separate NFC module and reducing the number of material components, thereby reducing product thickness. When this backlight module is assembled into electronic products, it makes wearable electronic products more compact and thinner.

[0021] Secondly, the combination of the backlight module and NFC function achieves a high degree of integration of functional modules, reduces material components, simplifies assembly and production processes, lowers manufacturing costs, and simplifies production processes. Attached Figure Description

[0022] Figure 1 This is a schematic cross-sectional view of the backlight module in this invention;

[0023] Figure 2 This is a front view of the backlight module in this invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-2 As shown, the backlight module with integrated NFC function according to the present invention comprises the following components arranged from top to bottom:

[0026] Black adhesive layer 1: Located on the top layer of the backlight module, it is used to seal and fix the backlight module, prevent light leakage, and ensure optical performance.

[0027] Gap layer 2: Located below the black adhesive layer 1, it provides the necessary spacing between the layers to ensure structural stability.

[0028] Brightness enhancement film 3: It is a transparent film with a curved shape, which is disposed below the gap layer 2 to improve the brightness and uniformity of the backlight module.

[0029] Lower brightness enhancement film 4: a planar thin film located below the upper brightness enhancement film 3, further enhancing brightness.

[0030] Diffusion film 5: A uniform thin film layer located below the lower brightness enhancement film 4 to ensure uniform light distribution.

[0031] Light guide plate 6: A rectangular thin plate located below the diffusion film 5 and fixed by double-sided adhesive layer 7. It is used to guide the light emitted from the side and ensure that the light is evenly distributed.

[0032] Reflective film 8: A rectangular film located below the light guide plate 6, fixed by adhesive bonding, used to enhance light reflection.

[0033] NFC Antenna Layer 9: This layer consists of an NFC FPC layer and a ferrite layer. The NFC FPC layer forms a coil through winding traces and leads it to the outside. The coil is responsible for enabling near-field communication. The ferrite layer is used to enhance the antenna signal strength, shield electromagnetic interference, and ensure the stability of the NFC function.

[0034] Backlight bracket: A ring-shaped frame located on the periphery of the backlight module, used to support and fix all other components to ensure structural stability.

[0035] Release film protective layer 10: Located above the black adhesive layer 1, it protects the integrity of the backlight module during the assembly process and prevents damage.

[0036] Release film tear handle 11: Located on one side of the release film protective layer 10, it makes it easy to manually tear open the release film and ensures convenient operation.

[0037] LED lights: These are installed at the bottom of the light guide plate 6 and are fixedly connected to the light guide plate 6 via a single-sided adhesive PET layer to ensure uniform distribution of the light source.

[0038] Through the above design, the backlight module of the present invention not only integrates NFC function, but also optimizes the layout and structure of components, reduces the thickness and space occupied by the module, thereby improving the functionality and comfort of wearable electronic products.

[0039] This invention provides a backlight module integrating NFC functionality, effectively solving the problems of separate functions, large thickness, and wasted space in existing technologies, while improving the overall integration and battery life of wearable electronic products. This backlight module is particularly suitable for wearable devices such as smartwatches and smart glasses, and provides greater flexibility and optimization space for device design.

[0040] Furthermore, this invention also provides a wearable electronic product including the aforementioned backlight module with integrated NFC functionality. This wearable electronic product can connect to a processor, wireless module, and sensors to support NFC functions such as mobile payment and data transmission. It is suitable for wearable devices such as smartwatches and smart glasses, improving the overall design integration and space utilization while fulfilling display and communication function integration requirements.

[0041] A smartwatch with a backlight module design identical to that of this invention. This backlight module not only features conventional display functions but also integrates NFC functionality. Through this module, it connects to the smartwatch's processor and wireless module, enabling NFC payments, data transfer, and other functions. The NFC functionality is directly embedded in the backlight module, resulting in a thinner and lighter overall smartwatch design and enhanced battery life.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A backlight module integrating NFC function, characterized in that: The following components are stacked sequentially from top to bottom: a black adhesive layer (1), a gap layer (2), an upper brightness enhancement film (3), a lower brightness enhancement film (4), a diffusion film (5), a light guide plate (6), a double-sided adhesive layer (7), a reflective film (8), an NFC antenna layer (9), and a backlight adhesive frame for supporting and fixing the above components. The NFC antenna layer (9) includes an NFC FPC layer and a ferrite layer. The NFC FPC layer forms a coil by winding wires and leads it to the outside. The coil is responsible for realizing the near-field communication function. The ferrite layer is used to enhance the antenna signal strength, shield electromagnetic interference, and ensure the stability of the NFC function.

2. The backlight module with integrated NFC function according to claim 1, characterized in that: The NFC FPC layer is a flexible circuit board that is bonded to the backlight frame and extends to the bottom layer of the backlight module.

3. The backlight module with integrated NFC function according to claim 2, characterized in that: The NFC FPC layer is bonded to the backlight frame with high-strength conductive adhesive.

4. The backlight module with integrated NFC function according to claim 1, characterized in that: The length of the NFC antenna layer (9) matches the width of the reflective film (8).

5. The backlight module with integrated NFC function according to claim 1, characterized in that: A release film protective layer (10) is also provided above the black adhesive layer (1).

6. The backlight module with integrated NFC function according to claim 5, characterized in that: On one side of the release film protective layer (10), there is a release film tear handle (11).

7. The backlight module with integrated NFC function according to claim 1, characterized in that: The bottom of the light guide plate (6) is provided with an LED light group (61), which is fixed to the light guide plate (6) by a single-sided adhesive PET layer.

8. The backlight module with integrated NFC function according to claim 1, characterized in that: The black adhesive layer (1) is a thin film and is located on the top layer of the backlight module. The gap layer (2) is a thin film layer and is disposed between the black adhesive layer (1) and the upper brightness enhancement film (3). The upper brightness enhancement film (3) is a transparent thin film with a curved shape and is disposed below the gap layer (2). The lower brightness enhancement film (4) is a planar thin film and is disposed below the upper brightness enhancement film (3). The diffusion film (5) is a uniform thin film layer and is disposed below the lower brightness enhancement film (4). The light guide plate (6) is a rectangular thin plate and is disposed below the diffusion film (5). The reflective film (8) is a rectangular thin film and is disposed below the light guide plate (6). The backlight adhesive frame is an annular frame and is located on the periphery of the backlight module.

9. A wearable electronic product using a backlight module with integrated NFC functionality, characterized in that, The wearable electronic product includes: a backlight module with integrated NFC function as described in claim 1, wherein the backlight module integrates near-field communication function and is part of a display module; The backlight module connects to the processor, wireless module, and sensors of electronic products via an interface, and supports NFC functionality, including mobile payment and data transmission.

10. The wearable electronic product according to claim 9, characterized in that: The wearable electronic product is a smartwatch or smart glasses, and the backlight module with integrated NFC function is used for the integration of display and NFC communication functions.

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