Display screen and NFC antenna integrated structure

Abstract

The utility model discloses an integrated structure of a display screen and an NFC (near field communication) antenna, which relates to the field of liquid crystal display modules and comprises a display screen body, transparent glass is arranged on one side of the display screen body, the NFC antenna is arranged on one side of the transparent glass, silver pastes are arranged at two ends of the NFC antenna, and the two groups of silver pastes are connected through a flexible circuit board. And a plurality of ports are arranged in the flexible circuit board. According to the display screen and NFC antenna integrated structure provided by the utility model, the NFC antenna is additionally arranged on the display screen body to form the integrated structure, the structure is relatively simple, the manufacturing cost is low, convenience is brought to the design of the whole machine, meanwhile, the surrounding NFC antenna coil is formed on the etched transparent glass, the integrated structure design is realized by utilizing a coupling mode of a coil magnetic field, and the cost is low. And the display screen and the NFC antenna are integrated, so that the effect is better.

Description

Technical Field

[0001] The utility model relates to the field of liquid crystal display modules, and more specifically, to an integrated structure of a display screen and an NFC antenna. Background Art

[0002] LCM (Liquid Crystal Module) refers to a liquid crystal display module, which is a key component of a liquid crystal display (LCD). An LCM module usually includes the LCD itself as well as a series of modular components for display functions, such as the drive circuit, backlight, and touch function. Today, LCM modules are widely used in various electronic devices, such as smartphones, tablets, laptops, car dashboards, industrial displays, etc.

[0003] Currently, the LCM module industry will install built-in NFC antennas in smart watches, smart homes, smart industrial control products, etc. for payment or data exchange and collection with smart media. However, in the design solutions of existing technologies, the display module and NFC antenna are mostly separate structures, which are relatively complex and have high manufacturing costs, bringing inconvenience to the design of the entire device.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Summary of the Invention

[0005] In response to the problems in the related art, the present invention proposes an integrated structure of a display screen and an NFC antenna to overcome the above-mentioned technical problems existing in the existing related art.

[0006] To this end, the specific technical solutions adopted in this utility model are as follows:

[0007] The display screen and NFC antenna are integrated into a structure, including a display screen body, a transparent glass is provided on one side of the display screen body, and an NFC antenna is provided on one side of the transparent glass. Silver paste is provided at both ends of the NFC antenna, and the two sets of silver paste are connected by a flexible circuit board, and several ports are provided inside the flexible circuit board.

[0008] Furthermore, in order to cover the area where the silver paste is bound to the flexible circuit board through black silk screen printing, and perfectly create an invisible NFC electromagnetic field transmitting initial device that does not affect the appearance, a black silk screen is set between the display body and the transparent glass; the cross-sectional shape of the transparent glass is the same as the cross-sectional shape of the black silk screen.

[0009] Furthermore, in order to lay the foundation for the binding use of the flexible circuit board through silk-screen printing silver paste, cavities are provided at both ends of the flexible circuit board, and the silver paste is provided inside the cavity.

[0010] Furthermore, in order to achieve coupling of the coil magnetic field through the surrounding NFC antenna, the NFC antenna is arranged in a surrounding manner on one side of the transparent glass, and the surrounding width of the NFC antenna is 35 mm, and the surrounding length of the NFC antenna is 87.3 mm; the diameter of the NFC antenna is 0.65 mm, and the surrounding gap of the NFC antenna is 0.25 mm.

[0011] The beneficial effects of the utility model are:

[0012] 1. The integrated display screen and NFC antenna structure proposed in this utility model adds an NFC antenna to the display screen body to form an integrated structure. Its structure is relatively simple, the manufacturing cost is low, and it brings convenience to the overall device design. At the same time, a surrounding NFC antenna coil is formed on the etched transparent glass, and the integrated structural design is realized by coupling the coil magnetic field, making the integrated display screen and NFC antenna structure more effective.

[0013] 2. The utility model establishes a connection with the data processing center on the mainboard through two port lines of the flexible circuit board, and uses black silk-screen silver paste to cover the binding area of the flexible circuit board, which can be perfectly made into an invisible NFC electromagnetic field transmitting initial device that does not affect the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of an integrated structure of a display screen and an NFC antenna according to an embodiment of the present invention;

[0016] Figure 2 It is a partial schematic diagram of the integrated structure of a display screen and an NFC antenna according to an embodiment of the present invention.

[0017] In the picture:

[0018] 1. Display body; 2. Transparent glass; 3. NFC antenna; 4. Silver paste; 5. Flexible circuit board; 6. Port; 7. Black silk screen; 8. Chamber. DETAILED DESCRIPTION

[0019] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] According to an embodiment of the present invention, a display screen and an NFC antenna integrated structure is provided.

[0021] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-Figure 2 As shown, the integrated structure of the display screen and NFC antenna according to the embodiment of the present invention includes a display screen body 1, a transparent glass 2 is provided on one side of the display screen body 1, an NFC antenna 3 is provided on one side of the transparent glass 2, silver paste 4 is provided at both ends of the NFC antenna 3, and the two groups of silver paste 4 are connected by a flexible circuit board 5, and a plurality of ports 6 are provided inside the flexible circuit board 5.

[0022] In one embodiment, for the above-mentioned display screen body 1, a black silk screen 7 is provided between the display screen body 1 and the transparent glass 2; the cross-sectional shape of the transparent glass 2 is the same as the cross-sectional shape of the black silk screen 7, so that the black silk screen 7 covers the binding area between the silver paste 4 and the flexible circuit board 5, and perfectly makes it into an invisible NFC electromagnetic field transmitting initial device that does not affect the appearance.

[0023] In one embodiment, for the above-mentioned flexible circuit board 5 , cavities 8 are provided at both ends of the flexible circuit board 5 , and the silver paste 4 is provided inside the cavity 8 , thereby laying a foundation for binding and using the flexible circuit board 5 by screen printing the silver paste 4 .

[0024] In one embodiment, for the above-mentioned NFC antenna 3, the NFC antenna 3 is arranged in a surrounding manner on one side of the transparent glass 2, and the surrounding width of the NFC antenna 3 is 35 mm, and the surrounding length of the NFC antenna 3 is 87.3 mm; the diameter of the NFC antenna 3 is 0.65 mm, and the surrounding gap of the NFC antenna 3 is 0.25 mm, so that the coupling of the coil magnetic field is achieved through the surrounding NFC antenna 3.

[0025] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0026] In actual application, ITO glass is selected as the transparent glass 2. After the transparent glass 2 is etched, a surrounding NFC antenna 3 coil, that is, the primary coil of the transmitting antenna, is formed on the transparent glass 2. It is a near-field coupling antenna, and the coupling method is the coupling of the coil magnetic field. In addition, silver paste 4 is silk-screened at both ends of the NFC antenna 3 and used as a flexible circuit board 5, that is, FPC binding. After FPC binding, the NFC+ and NFC- two port lines are led out. The specific NFC+ and NFC- two port lines are connected to the data processing center on the mainboard, that is, the radio frequency chip, and a cover is fully attached. Black silk screen 7 is silk-screened on the display screen body 1 and the transparent glass 2 to cover the silver paste 4 and the FPC binding area, perfectly making it an invisible NFC transmitting electromagnetic field initial device that does not affect the appearance, and obtaining an integrated structure of the display screen and NFC antenna.

[0027] Specifically, by integrating the NFC antenna into the functional chip of the display body 1 and using transparent ITO, the antenna circuit is completed with the NFC antenna 3 on the functional chip. Since ITO is a material with electrical conductivity, its conductivity is lower than that of metals such as copper and silver. In addition, ITO is transparent and does not affect the display effect. It is also very thin, which can make the integrated structure of the display and the NFC antenna more effective.

[0028] Specifically, the main function of the NFC antenna 3 is to transmit the NFC signal from the transmitting end to the receiving end. When an NFC device such as a mobile phone or tablet is close to the NFC tag, the NFC antenna 3 will capture the weak electromagnetic field signal emitted by the tag. The weak electromagnetic field signal is usually generated by the RFID chip in the tag. The captured electromagnetic field signal needs to go through a series of conversion processes to be effectively extracted.

[0029] First, the electromagnetic field signal will be amplified and converted into an analog electrical signal, and then the analog signal will be converted into a digital signal to be sampled and quantized for subsequent processing. Once the digital signal is extracted, it will be sent to the NFC controller for processing. In the controller, the digital signal will be decoded and compared with the pre-stored information. If the match is successful, the corresponding operation such as payment, data transmission, etc. will be performed, thereby eliminating the need to separately design an external antenna device for reception, thereby realizing the interface between the antenna connection and the RF chip.

[0030] To achieve high-performance NFC communication, the design of the NFC antenna 3 requires ensuring that the operating frequency of the NFC antenna 3 matches the desired frequency band. Furthermore, the bandwidth and impedance matching of the NFC antenna 3 must be considered to ensure optimal signal transmission performance. The directivity of the NFC antenna 3 is crucial for improving signal quality. Generally, NFC antennas 3 with greater directivity gain are more suitable for NFC communication. In some cases, non-directional antennas can also provide good performance. To achieve optimal signal transmission performance, the impedance of the NFC antenna 3 should match the impedance of the NFC tag. Impedance mismatches can lead to signal reflection and attenuation, thereby reducing communication quality. The size and shape of the NFC antenna 3 also affect its radiation characteristics and directivity. Smaller antennas often have better radiation characteristics and directivity, but may be subject to physical limitations such as space and cost. In contrast, the NFC antenna 3 of this embodiment is designed on the ITO glass to match the desired impedance, effectively matching its operating frequency to the desired frequency band. This also eliminates the need for excessive spatial structure considerations and is relatively inexpensive.

[0031] In summary, with the help of the above-mentioned technical solutions of the present invention, the display screen and NFC antenna integrated structure proposed by the present invention has an NFC antenna added to the display screen cover, forming an integrated structure. Its structure is relatively simple, with low manufacturing costs, which brings convenience to the overall design of the device. At the same time, a surrounding NFC antenna 3 coil is formed on the etched transparent glass 2, and the integrated structural design is achieved by coupling the coil magnetic field. The present invention uses transparent ITO to route the NFC antenna on the display screen body 1, thereby completing the antenna circuit. Based on the electrical conductivity of ITO, it has a lower conductivity than metals such as copper and silver. ITO is transparent and thin, which does not affect the display effect and improves the quality of the product.

[0032] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; 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, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A display screen and NFC antenna integrated structure, comprising a display screen body (1), characterized in that: Transparent glass (2) is provided on one side of the display screen body (1), an NFC antenna (3) is provided on one side of the transparent glass (2), silver paste (4) is provided at both ends of the NFC antenna (3), and two groups of silver paste (4) are connected via a flexible circuit board (5), and a plurality of ports (6) are provided inside the flexible circuit board (5).

2. The display screen and NFC antenna integrated structure according to claim 1, characterized in that: A black silk screen (7) is provided between the display screen body (1) and the transparent glass (2).

3. The integrated display screen and NFC antenna structure according to claim 2, characterized in that: The cross-sectional shape of the transparent glass (2) is the same as the cross-sectional shape of the black silk screen (7).

4. The display screen and NFC antenna integrated structure according to claim 1, characterized in that: Cavities (8) are provided at both ends of the flexible circuit board (5), and the silver paste (4) is provided inside the cavity (8).

5. The integrated display screen and NFC antenna structure according to claim 1, characterized in that: The NFC antenna (3) is arranged on one side of the transparent glass (2) in a surrounding manner, and the surrounding width of the NFC antenna (3) is 35 mm, and the surrounding length of the NFC antenna (3) is 87.3 mm.

6. The integrated display screen and NFC antenna structure according to claim 1, characterized in that: The diameter of the NFC antenna (3) is 0.65 mm, and the surrounding gap of the NFC antenna (3) is 0.25 mm.

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