Magnetically connected display module

Abstract

The utility model discloses a magnetically connected display module, which comprises a display screen and a flexible circuit board bound on the display screen, a plurality of first magnetic PINs electrically connected with a plurality of second magnetic PINs on a terminal mainboard are arranged on the flexible circuit board, and the first magnetic PINs and the second magnetic PINs which correspond to each other are opposite in magnetism. The display module does not need to use a connector, and the flexible circuit board is connected with the terminal mainboard through magnetic adsorption.

Description

Technical Field

[0001] The utility model relates to the display field, in particular to a magnetically connected display module. Background Art

[0002] At present, the FPC of the display module is generally connected to the terminal motherboard using a BTB connector. The BTB connector consists of a male and female socket that cooperate with each other, and the male and female sockets are respectively fixed to the FPC and the terminal motherboard by welding through PIN pins. For example, a Chinese patent with patent number CN201810392271.4 discloses an electronic device, which includes: a display screen assembly, including a first display screen and a second display screen arranged relatively, and further including a connecting screen connecting the first display screen and the second display screen; a motherboard assembly, which is arranged in a containing space surrounded by the first display screen, the second display screen and the connecting screen; a BTB connector and an adapter connector, wherein the BTB connector is respectively arranged on the display screen assembly and the motherboard assembly, and the adapter connector is arranged on the display screen assembly or the motherboard assembly, and the BTB connector realizes the electrical connection between the display screen assembly and the motherboard assembly through the adapter connector.

[0003] There are many PIN pins on FPC, and each PIN pin is relatively long and thin. During the production process of the display module, the connector on the FPC undergoes multiple plug-in and pull-out tests. If the alignment is not accurate during the plug-in and pull-out process, it is easy to cause the PIN pins of the connector to be tilted or even broken, resulting in a short circuit or open circuit between adjacent PIN pins. As a result, the male and female sockets of the connector cannot be connected normally, and the display module cannot light up. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies of the prior art, the utility model provides a display module, which does not require the use of a connector, and the flexible circuit board and the terminal mainboard are connected by magnetic adsorption.

[0005] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0006] A magnetically connected display module comprises a display screen and a flexible circuit board bound to the display screen, wherein the flexible circuit board is provided with a plurality of first magnetic PIN pins electrically connected to a plurality of second magnetic PIN pins on a terminal mainboard, and the corresponding first magnetic PIN pins and second magnetic PIN pins have opposite magnetic properties.

[0007] Furthermore, the first magnetic PIN pin includes a first magnetic layer close to the flexible circuit board and a second magnetic layer far away from the flexible circuit board, and the first magnetic layer and the second magnetic layer have opposite magnetic properties; the second magnetic PIN pin includes a third magnetic layer close to the terminal mainboard and a fourth magnetic layer far away from the terminal mainboard, and the third magnetic layer and the fourth magnetic layer have opposite magnetic properties; in the corresponding first magnetic PIN pin and second magnetic PIN pin, the first magnetic layer and the third magnetic layer have opposite magnetic properties.

[0008] Furthermore, the first magnetic PIN pin includes a first magnetic end facing outside the flexible circuit board and a second magnetic end facing away from the flexible circuit board, and the first magnetic end and the second magnetic end are magnetically opposite; the second magnetic PIN pin includes a third magnetic end facing outside the terminal mainboard and a fourth magnetic end facing inside the terminal mainboard, and the third magnetic end and the fourth magnetic end are magnetically opposite; in the corresponding first magnetic PIN pin and second magnetic PIN pin, the first magnetic end and the fourth magnetic end, and the second magnetic end and the third magnetic end are magnetically opposite.

[0009] Furthermore, the magnetic properties of two adjacent first magnetic PIN pins and the magnetic properties of two adjacent second magnetic PIN pins are opposite to each other.

[0010] Furthermore, the plurality of first magnetic PIN pins and the plurality of second magnetic PIN pins are ferromagnetic PIN pins that have been subjected to a magnetization process.

[0011] Furthermore, the first magnetic PIN pin and the second magnetic PIN pin include a PIN pin body and a ferromagnetic surface layer disposed on the PIN pin body and processed by a magnetization process.

[0012] Furthermore, the flexible circuit board is provided with a first positioning structure beside the plurality of first magnetic PIN pins, and the terminal mainboard is provided with a second positioning structure matching with the first positioning structure beside the plurality of second magnetic PIN pins.

[0013] Furthermore, the first positioning structure includes a plurality of positioning bosses, and the second positioning structure includes a plurality of positioning grooves corresponding to the positioning bosses.

[0014] Furthermore, the positioning boss is a reinforced PI or a grounding copper foil.

[0015] Furthermore, the plurality of positioning bosses are located on both sides of the plurality of first magnetic PIN pins, and the plurality of positioning grooves are located on both sides of the plurality of second magnetic PIN pins.

[0016] The utility model has the following beneficial effects: the display module of the utility model is provided with a first magnetic PIN pin having magnetism on the flexible circuit board, the first magnetic PIN pin is used in conjunction with a second magnetic PIN pin also having magnetism on the terminal mainboard, the flexible circuit board and the terminal mainboard are fixed and electrically connected by magnetic adsorption between the first magnetic PIN pin and the second magnetic PIN pin, the flexible circuit board and the terminal mainboard do not need to be connected with a connector, so there is no problem of the connector PIN pin on the flexible circuit board being tilted or even broken due to the plug-in and unplug test, and the plug-in and unplugging stress of the magnetic adsorption is much smaller than the plug-in and unplugging stress of the connector male and female sockets, thereby ensuring the normal connection between the flexible circuit board and the terminal mainboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the display module provided by the utility model.

[0018] Figure 2 This is a relative schematic diagram of the first magnetic PIN pin and the second magnetic PIN pin in the display module provided by the utility model.

[0019] Figure 3 It is a cross-sectional schematic diagram of the first magnetic PIN pin and the second magnetic PIN pin in the display module provided by the utility model.

[0020] Figure 4 It is a cross-sectional schematic diagram of a first magnetic PIN pin and a second magnetic PIN pin in another display module provided by the utility model.

[0021] Figure 5 It is a cross-sectional schematic diagram of a first magnetic PIN pin and a second magnetic PIN pin in another display module provided by the utility model.

[0022] Figure 6 It is a cross-sectional schematic diagram of the first magnetic PIN pin or the second magnetic PIN pin in the display module provided by the utility model.

[0023] Figure 7 This is a relative schematic diagram of a first magnetic PIN pin and a second magnetic PIN pin in another display module provided by the utility model.

[0024] Figure 8 This is a relative schematic diagram of a first positioning structure and a second positioning structure in another display module provided by the utility model. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0029] like Figure 1-3 As shown, a magnetically connected display module includes a display screen 100 and a flexible circuit board 200 bound to the display screen 100. When the display screen 100 is assembled in the terminal device, it is electrically connected to a terminal mainboard 300 in the terminal device through the flexible circuit board 200 to receive image data from the terminal mainboard 300 through the flexible circuit board 200.

[0030] The flexible circuit board 200 includes a first connection end 210, a second connection end 220 and a wiring area connected between the first connection end 210 and the second connection end 220. The first connection end 210 is provided with a plurality of ordinary PIN pins 240 for binding and connecting with the display screen 100, and the second connection end 220 is provided with a plurality of first magnetic PIN pins 250 for electrically connecting with the terminal mainboard 300; the plurality of ordinary PIN pins 240 provided on the first connection end 210 and the plurality of first magnetic PIN pins 250 provided on the second connection end 220 are connected to each other correspondingly through internal wiring of the wiring area.

[0031] The terminal mainboard 300 is provided with a plurality of second magnetic PIN pins 310, and the plurality of first magnetic PIN pins 250 provided on the flexible circuit board 200 and the plurality of second magnetic PIN pins 310 provided on the terminal mainboard 300 are electrically connected to each other correspondingly; and the corresponding first magnetic PIN pins 250 and second magnetic PIN pins 310 have opposite magnetic properties.

[0032] The display module of the utility model is provided with a first magnetic PIN pin 250 having magnetism on the flexible circuit board 200, and the first magnetic PIN pin 250 is used in conjunction with a second magnetic PIN pin 310 also having magnetism on the terminal mainboard 300. The flexible circuit board 200 and the terminal mainboard 300 are fixed and electrically connected by magnetic adsorption between the first magnetic PIN pin 250 and the second magnetic PIN pin 310. There is no need to use a connector to connect the flexible circuit board 200 and the terminal mainboard 300, so there is no problem of the connector PIN pin on the flexible circuit board 200 being tilted or even broken due to the plug-in and unplug test, and the plug-in and unplugging stress of the magnetic adsorption is much smaller than the plug-in and unplugging stress of the connector male and female sockets, thereby ensuring the normal connection between the flexible circuit board 200 and the terminal mainboard 300. Embodiment 2

[0033] As a specific implementation of the first embodiment, in this embodiment, if Figure 4As shown, the first magnetic PIN pin 250 includes a first magnetic layer 251 close to the flexible circuit board 200 and a second magnetic layer 252 away from the flexible circuit board 200, and the first magnetic layer 251 and the second magnetic layer 252 have opposite magnetic properties; the second magnetic PIN pin 310 includes a third magnetic layer 311 close to the terminal mainboard 300 and a fourth magnetic layer 312 away from the terminal mainboard 300, and the third magnetic layer 311 and the fourth magnetic layer 312 have opposite magnetic properties; in the corresponding first magnetic PIN pin 250 and second magnetic PIN pin 310, the first magnetic layer 251 and the third magnetic layer 311 have opposite magnetic properties.

[0034] In this embodiment, the polarities of the first magnetic PIN pin 250 and the second magnetic PIN pin 310 are distributed according to the upper and lower layers. For example, the lower layer (i.e., the first magnetic layer 251) of the first magnetic PIN pin 250 is an N pole, and the upper layer (i.e., the second magnetic layer 252) of the first magnetic PIN pin 250 is an S pole. At this time, when the lower layer (i.e., the third magnetic layer 311) of the second magnetic PIN pin 310 is an S pole, the upper layer (i.e., the fourth magnetic layer 312) of the second magnetic PIN pin 310 is an N pole. The first magnetic PIN pin 250 is connected to the second magnetic layer 252 through the S pole of its upper layer. The N poles of the upper layer of the magnetic PIN pin 310 are attracted by opposite polarities; of course, it can also be the other way around, the lower layer of the first magnetic PIN pin 250 (i.e., the first magnetic layer 251) is the S pole, and the upper layer of the first magnetic PIN pin 250 (i.e., the second magnetic layer 252) is the N pole. At this time, when the lower layer of the second magnetic PIN pin 310 (i.e., the third magnetic layer 311) is the N pole, the upper layer of the second magnetic PIN pin 310 (i.e., the fourth magnetic layer 312) is the S pole, and the first magnetic PIN pin 250 is attracted by the opposite polarity of the S pole of the upper layer of the second magnetic PIN pin 310 through the N pole of its upper layer. Embodiment 3

[0035] As another specific implementation of the first embodiment, in this embodiment, if Figure 5As shown, the first magnetic PIN pin 250 includes a first magnetic end 253 facing the outside of the flexible circuit board 200 and a second magnetic end 254 facing away from the inside of the flexible circuit board 200, and the first magnetic end 253 and the second magnetic end 254 are magnetically opposite; the second magnetic PIN pin 310 includes a third magnetic end 313 facing the outside of the terminal mainboard 300 and a fourth magnetic end 314 facing the inside of the terminal mainboard 300, and the third magnetic end 313 and the fourth magnetic end 314 are magnetically opposite; in the corresponding first magnetic PIN pin 250 and second magnetic PIN pin 310, the first magnetic end 253 and the fourth magnetic end 314, and the second magnetic end 254 and the third magnetic end 313 are magnetically opposite.

[0036] In this embodiment, the polarities of the first magnetic PIN pin 250 and the second magnetic PIN pin 310 are distributed according to the inner and outer ends. For example, the outer end (i.e., the first magnetic end 253) of the first magnetic PIN pin 250 is an N pole, and the inner end (i.e., the second magnetic end 254) of the first magnetic PIN pin 250 is an S pole. At this time, when the outer end (i.e., the third magnetic end 313) of the second magnetic PIN pin 310 is an N pole, the inner end (i.e., the fourth magnetic end 314) of the second magnetic PIN pin 310 is an S pole. The first magnetic PIN pin 250 is attracted by the N pole at its outer end and the S pole at the inner end of the second magnetic pin through the opposite polarity, and the S pole at its inner end is attracted by the second magnetic pin. The N poles at the outer ends of the magnetic PIN pins 310 are attracted by opposite polarities; of course, the opposite can also be true, the outer end of the first magnetic PIN pin 250 (i.e., the first magnetic end 253) is the S pole, and the inner end of the first magnetic PIN pin 250 (i.e., the second magnetic end 254) is the N pole. At this time, when the outer end of the second magnetic PIN pin 310 (i.e., the third magnetic end 313) is the S pole, the inner end of the second magnetic PIN pin 310 (i.e., the fourth magnetic end 314) is the N pole, and the first magnetic PIN pin 250 is attracted by the opposite polarity of the S pole at its outer end and the N pole at its inner end is attracted by the opposite polarity of the S pole at the outer end of the second magnetic pin 310. Embodiment 4

[0037] As another specific implementation of the first embodiment, in this embodiment, the plurality of first magnetic PIN pins 250 and the plurality of second magnetic PIN pins 310 are ferromagnetic PIN pins that have been subjected to a magnetization process.

[0038] In this embodiment, the entire PIN pin body 1 of the first magnetic PIN pin 250 and the second magnetic PIN pin 310 is made of ferromagnetic material, and after being manufactured, a special magnetization process is used to make the first magnetic PIN pin 250 and the second magnetic PIN pin 310 magnetic.

[0039] Ferromagnetic materials refer to a type of material that has magnetic conductivity and strong magnetism in an external magnetic field, mainly iron and alloys containing iron. Of course, cobalt, nickel and alloys containing cobalt or nickel are also good ferromagnetic materials. Therefore, ferromagnetic materials are not limited to iron and alloys containing iron.

[0040] The magnetization process is a process of magnetizing ferromagnetic materials, usually achieved by a magnetizer. According to the coercive force of the ferromagnetic material and the required magnetization effect, the magnetization method is divided into constant current magnetization and pulse magnetization.

[0041] Constant current magnetization: A constant current of direct current is passed through the coil to generate a constant magnetic field. This method is suitable for ferromagnetic materials with low coercivity, such as ferrite materials.

[0042] Pulse magnetization: A large instantaneous current passes through the coil, causing the coil to generate a short-term ultra-strong magnetic field. This method is suitable for ferromagnetic materials with high coercivity, such as NdFeB materials. Embodiment 5

[0043] As another specific implementation of the first embodiment, in this embodiment, Figure 6 As shown, the first magnetic PIN pin 250 and the second magnetic PIN pin 310 include a PIN pin body 1 and a ferromagnetic surface layer 1 a disposed on the PIN pin body 1 and processed by a magnetization process.

[0044] In this embodiment, the first magnetic PIN pin 250 and the second magnetic PIN pin 310 are only covered with a layer of ferromagnetic material on their surfaces to form the ferromagnetic surface layer 1a, and the entire PIN pin body 1 located under the ferromagnetic surface layer 1a can be made of non-ferromagnetic material, such as copper, and after the manufacturing is completed, the ferromagnetic surface layer 1a of the first magnetic PIN pin 250 and the second magnetic PIN pin 310 is made magnetic through a special magnetization process.

[0045] Compared with the third embodiment, in this embodiment, only a ferromagnetic surface layer 1a having magnetic properties is formed on the surface of the first magnetic PIN pin 250 and the second magnetic PIN pin 310, while the PIN pin body 1 can still use an ordinary PIN pin 240 (such as a copper PIN pin) to ensure high conductivity, and the ferromagnetic surface layer 1a can also protect the PIN pin body 1 to prevent the PIN pin body 1 from oxidation. Embodiment 6

[0046] As an optimization solution of Embodiments 1 to 5, in this embodiment, Figure 7 As shown, the magnetic properties of two adjacent first magnetic PIN pins 250 and two adjacent second magnetic PIN pins 310 are opposite.

[0047] In this embodiment, since the magnetism of two adjacent first magnetic PIN pins 250 is opposite, the magnetism of two adjacent second magnetic PIN pins 310 is also opposite. When the second magnetic PIN pin 310 is magnetically attached to the corresponding second magnetic PIN pin 310, the principle of like charges repel each other is used to prevent the second magnetic PIN pin 310 from being mistakenly magnetically attached to the adjacent second magnetic PIN pin 310 and causing the attachment to be offset.

[0048] In the second embodiment, the magnetism of the first magnetic layer 251 between two adjacent first magnetic PIN pins 250 is opposite, and the magnetism of the second magnetic layer 252 between the two adjacent first magnetic PIN pins 250 is also opposite; the magnetism of the third magnetic layer 311 between two adjacent second magnetic PIN pins 310 is opposite, and the magnetism of the fourth magnetic layer 312 between the two adjacent second magnetic PIN pins 310 is also opposite.

[0049] In the third embodiment, the magnetism of the first magnetic end 253 between two adjacent first magnetic PIN pins 250 is opposite, and the magnetism of the second magnetic end 254 between the two is also opposite; the magnetism of the third magnetic end 313 between two adjacent second magnetic PIN pins 310 is opposite, and the magnetism of the fourth magnetic end 314 between the two is also opposite. Embodiment 7

[0050] As an optimization solution of Embodiments 1 to 6, in this embodiment, Figure 8 As shown, the flexible circuit board 200 is provided with a first positioning structure 260 next to the plurality of first magnetic PIN pins 250 , and the terminal mainboard 300 is provided with a second positioning structure 320 matching the first positioning structure 260 next to the plurality of second magnetic PIN pins 310 .

[0051] In this embodiment, when the flexible circuit board 200 and the terminal mainboard 300 are electrically connected, they are positioned by the first positioning structure 260 and the second positioning structure 320 to prevent the first magnetic PIN pin 250 and the second magnetic PIN pin 310 from being misaligned or offset.

[0052] In this embodiment, the first positioning structure 260 includes a plurality of positioning bosses, and the second positioning structure 320 includes a plurality of positioning grooves corresponding to the positioning bosses. When the first magnetic PIN foot 250 and the second magnetic PIN foot 310 are magnetically attached, the positioning bosses are embedded in the corresponding positioning grooves.

[0053] The positioning boss may be, but is not limited to, a reinforcement PI or a grounding copper foil.

[0054] Preferably, the plurality of positioning bosses are located on both sides of the plurality of first magnetic PIN pins 250 , and the plurality of positioning grooves are located on both sides of the plurality of second magnetic PIN pins 310 .

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A magnetically connected display module, comprising a display screen and a flexible circuit board bound to the display screen, characterized in that: The flexible circuit board is provided with a plurality of first magnetic PIN pins electrically connected to a plurality of second magnetic PIN pins on the terminal mainboard, and the corresponding first magnetic PIN pins and second magnetic PIN pins have opposite magnetic properties.

2. The magnetically connected display module according to claim 1, characterized in that: The first magnetic PIN pin includes a first magnetic layer close to the flexible circuit board and a second magnetic layer far away from the flexible circuit board, and the first magnetic layer and the second magnetic layer have opposite magnetic properties; the second magnetic PIN pin includes a third magnetic layer close to the terminal mainboard and a fourth magnetic layer far away from the terminal mainboard, and the third magnetic layer and the fourth magnetic layer have opposite magnetic properties; in the corresponding first magnetic PIN pin and second magnetic PIN pin, the first magnetic layer and the third magnetic layer have opposite magnetic properties.

3. The magnetically connected display module according to claim 1, characterized in that: The first magnetic PIN pin includes a first magnetic end facing outside the flexible circuit board and a second magnetic end facing away from the flexible circuit board, and the first magnetic end and the second magnetic end have opposite magnetic properties; the second magnetic PIN pin includes a third magnetic end facing outside the terminal mainboard and a fourth magnetic end facing inside the terminal mainboard, and the third magnetic end and the fourth magnetic end have opposite magnetic properties; in the corresponding first magnetic PIN pin and second magnetic PIN pin, the first magnetic end and the fourth magnetic end, and the second magnetic end and the third magnetic end have opposite magnetic properties.

4. The magnetically connected display module according to any one of claims 1 to 3, characterized in that: The magnetic properties of two adjacent first magnetic PIN pins and two adjacent second magnetic PIN pins are opposite to each other.

5. The magnetically connected display module according to claim 1, characterized in that: The plurality of first magnetic PIN pins and the plurality of second magnetic PIN pins are ferromagnetic PIN pins that have been subjected to a magnetization process.

6. The magnetically connected display module according to claim 5, characterized in that: The first magnetic PIN pin and the second magnetic PIN pin include a PIN pin body and a ferromagnetic surface layer disposed on the PIN pin body and processed by a magnetization process.

7. The magnetically connected display module according to claim 1, characterized in that: The flexible circuit board is provided with a first positioning structure next to the plurality of first magnetic PIN pins, and the terminal mainboard is provided with a second positioning structure matching with the first positioning structure next to the plurality of second magnetic PIN pins.

8. The magnetically connected display module according to claim 7, characterized in that: The first positioning structure includes a plurality of positioning bosses, and the second positioning structure includes a plurality of positioning grooves corresponding to the positioning bosses; when the first magnetic PIN foot and the second magnetic PIN foot are magnetically attached, the positioning bosses are embedded in the corresponding positioning grooves.

9. The magnetically connected display module according to claim 8, characterized in that: The positioning boss is a reinforced PI or a grounding copper foil.

10. The magnetically connected display module according to claim 8, characterized in that: The plurality of positioning bosses are located on both sides of the plurality of first magnetic PIN pins, and the plurality of positioning grooves are located on both sides of the plurality of second magnetic PIN pins.

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