CN213661624U - Display screen device with NFC module - Google Patents
Display screen device with NFC module Download PDFInfo
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- CN213661624U CN213661624U CN202022003734.9U CN202022003734U CN213661624U CN 213661624 U CN213661624 U CN 213661624U CN 202022003734 U CN202022003734 U CN 202022003734U CN 213661624 U CN213661624 U CN 213661624U
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Abstract
A display screen device having an NFC module, comprising: the NFC antenna comprises an upper glass substrate and a metal cover plate, wherein an NFC antenna is arranged in a space between the upper glass substrate and the metal cover plate; a magnetic ferrite material is arranged between the NFC antenna and the metal cover plate to separate the NFC antenna and the metal cover plate; the NFC antenna is connected with a radio frequency circuit, the radio frequency circuit comprises: the radio frequency chip, the filter circuit and the matching circuit; the NFC antenna is a return antenna which generates a 13.56MHz electromagnetic field; the radio frequency circuit generates a 13.56MHz radio frequency signal and is impedance matched to the antenna. The radio frequency circuit is arranged on the mainboard outside the display screen device. The magnetic ferrite magnetic conductive material is a magnetic conductive material with high magnetic conductivity and low loss. The utility model discloses improve the absorbed problem in antenna energy field, avoid the magnetic field to be disturbed.
Description
Technical Field
The utility model belongs to the technical field of the wireless communication product, concretely relates to display screen device with NFC module.
Background
Near field communication (NFC for short) is an emerging technology, devices (such as mobile phones) using the NFC technology can exchange data when approaching each other, are integrated and evolved from a non-contact Radio Frequency Identification (RFID) and an interconnection and interworking technology, and realize applications such as mobile payment, electronic ticketing, door control, mobile identity recognition, anti-counterfeiting and the like by integrating functions of an induction card reader, an induction card and point-to-point communication on a single chip and using a mobile terminal.
At present, the NFC technology is greatly popularized and is seen everywhere in daily life. With the continuous popularization of intelligent equipment, the application of the NFC display screen is more and more extensive.
In the NFC display screen in the prior art, an NFC antenna is attached to the upper or lower part of a glass substrate, or the NFC antenna is attached between the glass substrate and a metal cover plate. The metal cover plate is a large number of metal parts and is used for fixing a display screen or fixing a circuit board and the like in a whole machine product. However, the metal component is an interference source, and can absorb an electromagnetic field and influence the direction of the electromagnetic field, the electromagnetic field can form an electronic vortex on the surface of the device to generate heat and consume the capacity of the electromagnetic field, so that the energy absorption of the antenna and the direction change of the electromagnetic field can be caused, the induction distance of the antenna is shortened, the success rate of card reading is seriously reduced, and the user experience is greatly influenced.
Disclosure of Invention
The utility model aims to solve the technical problem that a display screen device with NFC module is provided, improves the absorbed problem in antenna energy field, avoids magnetic field to be disturbed.
The utility model discloses a realize like this:
a display screen device with an NFC module is characterized in that: the method comprises the following steps: the NFC antenna comprises an upper glass substrate and a metal cover plate, wherein an NFC antenna is arranged in a space between the upper glass substrate and the metal cover plate; a magnetic ferrite material is arranged between the NFC antenna and the metal cover plate to separate the NFC antenna and the metal cover plate; the NFC antenna is connected with a radio frequency circuit, the radio frequency circuit comprises: the radio frequency chip, the filter circuit and the matching circuit; the NFC antenna is a return antenna which generates a 13.56MHz electromagnetic field; the radio frequency circuit generates a 13.56MHz radio frequency signal and is impedance matched to the antenna.
Furthermore, the radio frequency circuit is arranged on a main board outside the display screen device.
Further, the magnetic ferrite magnetic conductive material is a magnetic conductive material with high magnetic conductivity and low loss.
The utility model has the advantages that: 1. the magnetic ferrite magnetic material is adopted to effectively reduce the absorption of the energy field of the antenna by metal components around the screen, and the transmitting power and efficiency of the antenna are improved. The direction change of the electromagnetic field of the antenna is avoided, and an effective read-write area is ensured. The success rate and the read-write distance of the NFC read-write card are improved; 2. the NFC antenna matching circuit is arranged outside the screen, so that the yield of the display screen is improved, the antenna is convenient to match and debug, and the antenna is adaptive to different products.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the rf circuit of the present invention.
Detailed Description
As shown in fig. 1 and 2, a display screen device having an NFC module includes: the NFC antenna comprises an upper glass substrate 1 and a metal cover plate 2, wherein an NFC antenna 3 is arranged in a space between the upper glass substrate 1 and the metal cover plate 2; a magnetic ferrite material 4 is arranged between the NFC antenna 3 and the metal cover plate 2 to separate the NFC antenna and the metal cover plate; NFC antenna 3 connects radio frequency circuit 5, and radio frequency circuit 5 includes: the radio frequency chip, the filter circuit and the matching circuit; the NFC antenna 3 is a return antenna generating an electromagnetic field of 13.56 MHz; the radio frequency circuit 5 generates a 13.56MHz radio frequency signal and matches the antenna impedance. And the radio frequency circuit 5 is arranged on the mainboard outside the display screen device.
The magnetic ferrite magnetic material 4 is a magnetic material with high magnetic permeability and low loss, mainly refers to a soft magnetic material, and typical representatives of the soft magnetic material are manganese zinc ferrite Mn-ZnFe2O4 and nickel zinc ferrite Ni-ZnFe2O 4.
The utility model discloses a magnetism ferrite magnetic material effectively reduces antenna energy field and is absorbed by metal parts around the screen, improves the transmitting power and the efficiency of antenna. The direction change of the electromagnetic field of the antenna is avoided, and an effective read-write area is ensured. The success rate and the read-write distance of the NFC read-write card are improved; the NFC antenna matching circuit is arranged outside the screen, so that the yield of the display screen is improved, the antenna is convenient to match and debug, and the antenna is adaptive to different products.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (3)
1. A display screen device with an NFC module is characterized in that: the method comprises the following steps: the NFC antenna comprises an upper glass substrate and a metal cover plate, wherein an NFC antenna is arranged in a space between the upper glass substrate and the metal cover plate; a magnetic ferrite material is arranged between the NFC antenna and the metal cover plate to separate the NFC antenna and the metal cover plate; the NFC antenna is connected with a radio frequency circuit, the radio frequency circuit comprises: the radio frequency chip, the filter circuit and the matching circuit; the NFC antenna is a return antenna which generates a 13.56MHz electromagnetic field; the radio frequency circuit generates a 13.56MHz radio frequency signal and is impedance matched to the antenna.
2. A display screen device having an NFC module according to claim 1, wherein: the radio frequency circuit is arranged on the mainboard outside the display screen device.
3. A display screen device with an NFC module according to claim 1 or 2, wherein: the magnetic ferrite magnetic conductive material is a magnetic conductive material with high magnetic conductivity and low loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022003734.9U CN213661624U (en) | 2020-09-14 | 2020-09-14 | Display screen device with NFC module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022003734.9U CN213661624U (en) | 2020-09-14 | 2020-09-14 | Display screen device with NFC module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213661624U true CN213661624U (en) | 2021-07-09 |
Family
ID=76697432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022003734.9U Active CN213661624U (en) | 2020-09-14 | 2020-09-14 | Display screen device with NFC module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213661624U (en) |
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2020
- 2020-09-14 CN CN202022003734.9U patent/CN213661624U/en active Active
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