Patent Description:
Functions of a mobile terminal, for example, a mobile phone, tend to be increasingly diversified. A plurality of devices, for example, a camera, a receiver, and a photosensitive device used for fingerprint collection, used to implement different functions need to be integrated into the mobile phone. However, because an architecture space inside the mobile phone is limited, there is no enough space to deploy more functional devices, and consequently, an integration effect of functions of the mobile phone is reduced.

In document <CIT> A display apparatus capable of realizing uniform sound wave and improved sound quality is described. The display apparatus may include a display panel for displaying an image, a supporting member for supporting a rear surface of the display panel, at least one sound generating device disposed between the supporting member and the display panel, at least one partition provided at a predetermined interval from at least one sound generating device, and an adhesion member disposed in the periphery of the display panel.

In document <CIT> An electron device, in which accommodation space for a display can be extended over the space where a speaker is supposed to be disposed, is described. A portable terminal, as an example of an electron device, is provided with a display/speaker section, an operating section, and a microphone on the front surface of its main body. The portable terminal does not have an independent speaker. A display cover located in front of the display/speaker section for protecting the display surface vibrates in response to an audio signal by a drive to output sound. Consequently, the display can be situated even over the space where a speaker is supposed to be disposed.

In document <CIT> A sound output mechanism of a mobile device is described that is capable of outputting visual and sound signals, for example, a smart phone, tablet PC, MP4 (including MP3) and has an image output unit and a sound processing unit. The image output unit of the mobile device is arranged on the entire surface of a main body and the sound processing unit for outputting vibration power and sound is firmly secured at the inside thereof without increasing the volume or the area thereof.

Embodiments of this application provide a mobile terminal, to resolve a problem that an architecture space inside the mobile terminal is relatively small.

Another object of the present invention is to provide a mobile terminal that enables an improved sound generation using a display of the mobile terminal with increased efficiency and reduced power consumption.

To achieve the foregoing objective, the following technical solutions are used in this application:
A mobile terminal according to the present invention comprises a housing, and a middle frame and a display module that are disposed in the housing, wherein the display module is connected to the middle frame, and an accommodation space is formed between the display module and the middle frame. The mobile terminal further comprises a first magnet and a second magnet, wherein at least a part of the first magnet and at least a part of the second magnet are disposed in the accommodation space, and the first magnet is disposed on a back facet of the display module, the second magnet is disposed on the middle frame, and the first magnet and the second magnet are disposed face to face. The mobile terminal further comprises a support plate that is configured to improve a vibration effect of the display module, wherein an upper surface of the support plate is connected to the display module, and a lower surface of the support plate is connected to the first magnet, and an area of the upper surface of the support plate is greater than an area of a surface of a side that is of the first magnet and that is close to the support plate.

According to an aspect of the embodiments of this application, a mobile terminal is provided, including a housing, and a middle frame and a display module that are disposed in the housing. The display module may be mounted on a bearing table of the middle frame by using foam adhesive, so that the display module is connected to the middle frame. An accommodation space is formed between the display module and the middle frame. In addition, the mobile terminal further includes a first magnet and a second magnet, and at least a part of the first magnet and at least a part of the second magnet are disposed in the accommodation space. The first magnet is disposed on a back facet of the display module, the second magnet is disposed on the middle frame, and the first magnet and the second magnet are disposed face to face. In this case, the foam adhesive used to fasten the display module to the middle frame is elastic to some extent, and can be deformed under an action of an external force. In this way, when the first magnet receives the first drive signal used as a high-frequency signal, and when the first magnet may vibrate, under an effect of a magnetic field generated by the first magnet and a magnetic field generated by the second magnet, in a direction perpendicular to a light-emitting surface of the display module, the first magnet may drive the display module to move up and down, relative to the middle frame, at a small amplitude and a high frequency. In this case, the small-amplitude and high-frequency vibration of the display module cannot drive the middle frame to vibrate. Therefore, the middle frame is approximately in a static state. In this case, driven by the first magnet, the display module is used as a diaphragm to push air to generate sounds in the vibration process, so as to implement sound on display, thereby implementing a function of a receiver or a speaker. In this case, a sound hole does not need to be disposed in the mobile terminal, so that a problem that sound quality is affected because the sound hole is blocked can be resolved. In addition, a hole opening process in the mobile terminal is reduced, so that a surface of a display side of the mobile terminal is more flat and rounded.

Optionally, the first magnet is a coil, and the second magnet is a main magnet. Alternatively, the first magnet is a main magnet, and the second magnet is a coil. When the first magnet is a coil, the coil, the display module, and the foam adhesive used to fasten the display module to the middle frame form a sound system used to implement the sound on display. In a process of implementing the sound on display, the coil drives the display module to be used as the diaphragm, to push the air to generate sounds in the vibration process. Alternatively, when the first magnet is a main magnet, the main magnet, the display module, and the foam adhesive used to fasten the display module to the middle frame form a sound system used to implement the sound on display. In a process of implementing the sound on display, the main magnet drives the display module to be used as the diaphragm, to push the air to generate sounds in the vibration process.

Optionally, a part of the main magnet is embedded in a closed region wound by a wire of the coil. In this case, in the process of implementing the sound on display, after the coil receives the first drive signal, when the first magnet is the coil, a magnetic field generated by the coil interacts with a magnetic field generated by the main magnet, so that the coil drives the display module to vibrate up and down in a magnetic line cutting manner at a small amplitude and a high frequency. Alternatively, when the first magnet is the main magnet, the main magnet is reacted by the coil, and the coil drives the display module to vibrate at a high frequency.

Optionally, the mobile terminal further includes at least one auxiliary magnet. The auxiliary magnet and the main magnet are located on a same side, and there is a gap between the auxiliary magnet and the main magnet. In addition, a part of the coil is located in the gap between the auxiliary magnet and the main magnet. In this way, the magnetic field generated by the coil not only can interact with the magnetic field generated by the main magnet, but also can interact with a magnetic field generated by the at least one auxiliary magnet, to achieve an objective of improving vibration intensity of the coil or vibration intensity of the main magnet.

Optionally, the main magnet is located outside a closed region wound by a wire of the coil. In addition, the main magnet is parallel to a surface opposite to the coil. In this case, in the process of implementing the sound on display, when the coil receives the first drive signal, the coil and the main magnet can attract or repel each other in the magnetic field generated by the coil and the magnetic field generated by the main magnet, so that the first magnet (the coil or the main magnet) vibrates, relative to the second magnet (the main magnet or the coil), at a small amplitude and a high frequency. In this way, the first magnet drives the display module to vibrate at a small amplitude and a high frequency, to implement the sound on display.

Optionally, the mobile terminal further includes one auxiliary magnet. The auxiliary magnet and the coil are located on a same side, and the auxiliary magnet is embedded in the closed region wound by the wire of the coil. A technical effect of the auxiliary magnet is the same as that described above.

Optionally, a hole is disposed in the middle frame. The mobile terminal includes a support. At least a part of the second magnet is located in the hole on the middle frame. The support is disposed on a surface of a side that is of the middle frame and that is away from the display module, and is connected to the middle frame. In addition, the second magnet passes through the hole on the middle frame, and is disposed on the support. The hole is formed on the middle frame, so that the second magnet can pass through the hole and be disposed on the surface of the side that is of the middle frame and that is away from the display module. In this way, a spacing between the first magnet and the second magnet can be increased, thereby helping increase a vibration space of the first magnet and the second magnet.

Optionally, the mobile terminal further includes a spring plate and a support block. The spring plate and the support block are located in the hole on the middle frame. The spring plate is located between the second magnet and the support, and the spring plate is connected to the second magnet. In addition, the support block is disposed between the spring plate and the support, and an upper surface and a lower surface of the support block are respectively connected to the spring plate and the support. A resonance frequency of a sound system including the first magnet, the display module, and the foam adhesive is far greater than a resonance frequency of a vibration system including the spring plate. Therefore, the spring plate can work as a frequency divider. When the coil receives an intermediate-frequency or high-frequency first drive signal, the first magnet drives the display module to vibrate, so that the sound system works, thereby implementing the sound on display. When the coil receives a low-frequency second drive signal, the second magnet drives the spring plate and the middle frame connected to the spring plate to vibrate, so that the vibration system works, thereby implementing vibration of an entire mobile terminal.

Optionally, the mobile terminal further includes a spring plate and a support block. The spring plate, the support block, the first magnet, and the second magnet are all located in the accommodation space. In addition, the spring plate is located between the second magnet and the middle frame, and the spring plate is connected to the second magnet. The support block is disposed between the spring plate and the middle frame, and an upper surface and a lower surface of the support block are respectively connected to the spring plate and the middle frame. When a gap between the display module and the middle frame is large enough, components such as the first magnet, the second magnet, and the spring plate may all be disposed in the accommodation space formed between the display module and the middle frame. A technical effect of the spring plate is the same as that described above.

The mobile terminal further includes a support plate. An upper surface of the support plate is connected to the display module, and a lower surface of the support plate is connected to the first magnet. An area of the upper surface of the support plate is greater than an area of a surface of a side that is of the first magnet and that is close to the support plate. In this way, because the support plate is of a sheet structure, a contact area between the support plate and the display module is relatively large. Therefore, the upper surface and the lower surface of the support plate are respectively in contact with the display module and the first magnet, so that a contact area between the first magnet and the display module can be increased, and a driving force provided for the display module can be applied to the display module more evenly in a vibration process of the first magnet. In addition, by using the support plate, a deformed area of the display module may be further expanded, so that vibration efficiency of the display module driven by the first magnet is increased, power consumption is reduced, and a sound on display effect is improved.

Optionally, the mobile terminal further includes a washer. When the first magnet is the main magnet, the washer is located on a surface of a side that is of the main magnet and that is away from the display module. Alternatively, when the second magnet is the main magnet, the washer is located on a surface of a side that is of the main magnet and that is away from the middle frame. The washer is made of low-carbon steel. The washer has a magnetic conduction function, to reduce magnetic resistance of the main magnet. In addition, the washer has a magnetic isolation function.

Optionally, the mobile terminal further includes a magnetic bowl for carrying the main magnet. When the second magnet is the main magnet, the magnetic bowl is located on a surface of a side that is of the main magnet and that is away from the display module. The magnetic bowl may be made of stainless steel. In this case, the magnetic bowl may have a magnetic isolation function, to reduce a probability that a magnetic field generated by the main magnet has an adverse impact on another device in the mobile terminal.

Optionally, the mobile terminal further includes a first magnetic shield and a second magnetic shield. The main magnet is located in the first magnetic shield, and for the main magnet, all surfaces except a surface of a side facing the coil are wrapped by the first magnetic shield. In addition, the coil is located in the second magnetic shield, and for the coil, all surfaces except at least a surface of a side facing the main magnet are wrapped by the second magnetic shield. The first magnetic shield may reduce a probability that a magnetic field generated by the main magnet has an adverse impact on another device in the mobile terminal, and the second magnetic shield may reduce a probability that a magnetic field generated by the coil has an adverse impact on another device in the mobile terminal.

Optionally, when the mobile terminal includes the auxiliary magnet, the auxiliary magnet is located in the second magnetic shield, and a surface that is of the coil and that is opposite to the auxiliary magnet is not covered by the second magnetic shield. The second magnetic shield may further reduce a probability that a magnetic field generated by the auxiliary magnet has an adverse impact on another device in the mobile terminal.

<NUM>-mobile terminal; <NUM>-display module; <NUM>-display panel; <NUM>-back light unit; <NUM>-cover; <NUM>-middle frame; <NUM>-bearing table; <NUM>-foam adhesive; <NUM>-housing; <NUM>-accommodation space; <NUM>-first magnet; <NUM>-second magnet; <NUM>-oscillator; <NUM>-coil; <NUM>-support plate; <NUM>-elastic element; <NUM>-main magnet; <NUM>-auxiliary magnet; <NUM>-spring plate; <NUM>-support; <NUM>-support block; <NUM>-washer; <NUM>-magnetic bowl; <NUM>-filter; <NUM>-first power amplifier; <NUM>-second power amplifier; <NUM>-first magnetic shield; <NUM>-second magnetic shield; <NUM>-groove.

It is clearly that the described embodiments are merely a part rather than all of the embodiments of this application.

The following terms "first" and "second" are merely intended for a purpose of description, and shall not be understood as an indication or implication of relative importance or implicit indication of a quantity of indicated technical features. Therefore, a feature limited by "first" or "second" may explicitly or implicitly include one or more such features.

In addition, in this application, orientation terms such as "upper" and "lower" are defined relative to an orientation in which a component is schematically placed in the accompanying drawings. It should be understood that these orientation terms are relative concepts and are used for relative description and clarification, and these orientation terms may change accordingly based on changes of the orientation in which the component is placed in the accompanying drawings.

An embodiment of this application provides a mobile terminal <NUM> shown in <FIG>. The mobile terminal <NUM> includes, for example, a mobile phone, a tablet computer, a personal digital assistant (personal digital assistant, PDA), and a vehicle-mounted computer. A specific form of the mobile terminal <NUM> is not particularly limited in this embodiment of this application. For ease of description, an example in which the mobile terminal <NUM> is a mobile phone is used for description.

As shown in <FIG>, the mobile terminal <NUM> mainly includes a display module <NUM>, a middle frame <NUM>, and a housing <NUM>. The display module <NUM> and the middle frame <NUM> are disposed in the housing <NUM>. The mobile terminal <NUM> further includes a central processing unit (Central Processing Unit, CPU) disposed on a PCB.

As shown in <FIG>, the display module <NUM> includes a display panel (display panel, DP) <NUM>.

In some embodiments of this application, the display panel <NUM> may be a liquid crystal display (liquid crystal display, LCD). In this case, the display module <NUM> further includes a back light unit (back light unit, BLU) <NUM> configured to provide a light source for the liquid crystal display.

Alternatively, in some other embodiments of this application, as shown in <FIG>, the display panel <NUM> is an organic light-emitting diode (organic light emitting diode, OLED) display, and the OLED display can implement self-luminescence. Therefore, no BLU needs to be disposed in the display module <NUM>.

It should be noted that, a substrate in the OLED display may be made of a flexible resin material. In this case, the OLED display is a flexible display.

Alternatively, the substrate in the OLED display may be made of a relatively hard material, for example, glass. In this case, the OLED display is a hard display.

In some embodiments of this application, as shown in <FIG>, the display module <NUM> further includes a cover <NUM> located on a display side of the display panel <NUM>, for example, a cover glass (cover glass, CG). The cover glass has specific toughness.

In addition, as shown in <FIG>, the middle frame <NUM> is located between the display module <NUM> and the housing <NUM>.

As shown in <FIG>, a bearing table <NUM> in a ring shape is disposed on a side that is of the middle frame <NUM> and that is close to the display module <NUM>. Foam adhesive <NUM> is pasted on the bearing table <NUM>. The display module <NUM> is fastened to the middle frame <NUM> by using the foam adhesive <NUM>, so that the display module <NUM> is connected to the middle frame <NUM>.

A gap H exists between a back facet of the display module <NUM> fastened to the bearing table <NUM> and a first surface B1 of the middle frame <NUM>, and the gap H forms an accommodation space <NUM>.

It should be noted that the display module <NUM> has a light-emitting surface that can display an image. The back facet of the display module <NUM> refers to a surface of a side that is of the display module <NUM> and that is opposite to the light-emitting surface, that is, a surface of a side that is of the display module <NUM> and that is close to the middle frame <NUM>.

In addition, internal components such as a battery, a printed circuit board (printed circuit board, PCB), a camera (camera), and an antenna are mounted on a second surface B2 of the middle frame <NUM>.

It should be noted that the first surface B1 and the second surface B2 of the middle frame <NUM> are disposed opposite to each other. The first surface B1 is close to the display module <NUM>, and the second surface B2 is close to the housing <NUM>.

The housing <NUM> is mounted on the middle frame <NUM>, and the housing <NUM> can protect the foregoing internal components mounted on the second surface B2 of the middle frame <NUM>.

In addition, the mobile terminal <NUM> further includes at least one oscillator <NUM> shown in <FIG>. The oscillator <NUM> is connected to the display module <NUM> and the middle frame <NUM>.

In this case, the oscillator <NUM> is further electrically connected to a first signal end S1 (shown in <FIG>) of the CPU. The oscillator <NUM> is configured to: receive a first drive signal provided by the first signal end S1; and drive, based on the first drive signal, the display module <NUM> to vibrate in a direction perpendicular to the light-emitting surface A of the display module <NUM>.

In some embodiments of this application, the first drive signal may be an intermediate-frequency or high-frequency signal, for example, a signal whose frequency is higher than <NUM>. For example, when the mobile terminal <NUM> is a mobile phone, the first drive signal may be an audio analog signal that is sent by the CPU of the mobile phone to the oscillator <NUM> and that is corresponding to an audio digital signal.

It can be learned from the foregoing description that the display module <NUM> is mounted on the bearing table <NUM> by using the foam adhesive <NUM>. The foam adhesive <NUM> is elastic to some extent, and can be deformed under an action of an external force. In this way, when the oscillator <NUM> vibrates, based on the first drive signal, in the direction perpendicular to the light-emitting surface A of the display module <NUM>, the oscillator <NUM> drives the display module <NUM> to move up and down, relative to the middle frame <NUM>, at a small amplitude and a high frequency.

In this case, the small-amplitude and high-frequency vibration of the display module <NUM> cannot drive the middle frame <NUM> to vibrate. Therefore, the middle frame <NUM> is approximately in a static state.

In this case, driven by the oscillator <NUM>, the display module <NUM> is used as a diaphragm to push air to generate sounds in the vibration process, so as to implement sound on display.

It can be learned from the foregoing description that the display panel <NUM> in the display module <NUM> may be the LCD or the OLED display. In addition, compared with the LCD, the OLED display can self-illuminate. Therefore, a BLU does not need to be disposed in the display module <NUM>, and the display module <NUM> is thin. When the display module <NUM> is used as the diaphragm to implement the sound on display, deformation is more likely to occur, so that a sound effect of the diaphragm is better.

In this case, a partial structure of the oscillator <NUM>, the display module <NUM>, and the foam adhesive <NUM> used to fasten the display module <NUM> to the middle frame <NUM> form a sound system used to implement the sound on display. In this case, the partial structure in the oscillator <NUM>, the display module <NUM>, and an elastic coefficient of the foam adhesive <NUM> may affect a resonance frequency of the sound system.

Based on this, to make the sound system have a good vibration effect, a frequency of the first drive signal is the same as or approximately the same as the resonance frequency of the sound system.

In some embodiments of this application, as shown in <FIG>, the oscillator <NUM> includes a first magnet <NUM> and a second magnet <NUM>. The first magnet <NUM> is disposed on the back facet of the display module <NUM>, the second magnet <NUM> is disposed on the middle frame <NUM>, and the first magnet <NUM> and the second magnet <NUM> are disposed face to face. In addition, at least a part of the first magnet <NUM> and at least a part of the second magnet <NUM> are located in the accommodation space <NUM>.

The following describes in detail, by using examples, structures and disposing manners of the first magnet <NUM> and the second magnet <NUM> in the oscillator <NUM>.

In this example, as shown in <FIG>, the first magnet <NUM> is a coil <NUM>, and the second magnet <NUM> is a main magnet <NUM>.

In this case, the coil <NUM> is disposed on the back facet of the display module <NUM>, and the main magnet <NUM> is disposed on the middle frame <NUM>.

Alternatively, as shown in <FIG>, the first magnet <NUM> is a main magnet <NUM>, and the second magnet is a coil <NUM>.

In this case, the main magnet <NUM> is disposed on the back facet of the display module <NUM>, and the coil <NUM> is disposed on the middle frame <NUM>.

In addition, in this example, a part of the main magnet <NUM> is embedded in a closed region wound by a wire of the coil <NUM>.

To enable the second magnet <NUM> (for example, the main magnet <NUM> shown in <FIG> or the coil <NUM> shown in <FIG>) to be disposed on the middle frame <NUM>, in some embodiments of the present disclosure, as shown in <FIG> or <FIG>, a hole is disposed in the middle frame <NUM>.

The mobile terminal <NUM> includes a support <NUM>. At least a part of the main magnet <NUM> or the coil <NUM> is located in the hole on the middle frame <NUM>.

The support <NUM> may be fastened to the second surface B2 (a surface of a side away from the display module <NUM>) of the middle frame <NUM> through pasting by using an adhesive layer or through a threaded connection (a screw connection is used as an example in <FIG>).

In this case, the second magnet <NUM> (for example, the main magnet <NUM> shown in <FIG> or the coil <NUM> shown in <FIG>) passes through the hole on the middle frame <NUM>, and is disposed on the support <NUM>. The second magnet <NUM> may be fastened, by using an adhesive layer, to a surface that is of the support <NUM> and that is close to the display module <NUM>.

Alternatively, in some other embodiments of the present disclosure, as shown in <FIG>, when the spacing H between the display module <NUM> and the middle frame <NUM> is large enough, the entire oscillator <NUM> may be disposed between the display module <NUM> and the middle frame <NUM>.

In this case, both the main magnet <NUM> and the coil <NUM> are located in the accommodation space <NUM> between the display module <NUM> and the middle frame <NUM>.

In this case, the second magnet <NUM> (for example, the main magnet <NUM> shown in <FIG>) may be directly fastened, by using an adhesive layer, to a surface of a side that is of the middle frame <NUM> and that is close to the display module <NUM>.

In addition, in some embodiments of this application, positions of the main magnet <NUM> and the coil <NUM> in <FIG> may alternatively be exchanged. To be specific, the first magnet <NUM> is the main magnet <NUM>, and the second magnet <NUM> is the coil <NUM>. Similarly, the coil <NUM> used as the second magnet <NUM> may be directly fastened, by using the adhesive layer, to the surface of the side that is of the middle frame <NUM> and that is close to the display module <NUM>.

Based on this, the mobile terminal <NUM> shown in <FIG> is used as an example to describe a process in which the mobile terminal <NUM> implements sound on display.

The coil <NUM> is electrically connected to the first signal end S1 of the CPU. In this case, to implement a sound on display mode, as shown in <FIG>, a first drive signal provided by the first signal end S1 of the CPU is transmitted to the coil <NUM> in the oscillator <NUM> after being processed by a filter <NUM> and a first power amplifier <NUM>.

The filter <NUM> can filter out a low-frequency signal from the first drive signal, so that a frequency of the first drive signal is closer to a frequency of the sound system.

In addition, the first power amplifier <NUM> can amplify a signal output by the filter <NUM>, so that the coil <NUM> in the oscillator <NUM> identifies an amplified first drive signal.

In this case, when the coil <NUM> receives the first drive signal (that is, an intermediate-frequency or high-frequency signal), the coil <NUM> generates an alternating magnetic field under an action of the first drive signal.

A magnitude and a direction of the magnetic field generated by the coil <NUM> vary with a change of the first drive signal. For example, when the coil <NUM> receives the first drive signal, if a current in the coil <NUM> is relatively large, strength of the magnetic field generated by the coil <NUM> is relatively large; or if a current in the coil <NUM> is relatively small, strength of the magnetic field generated by the coil <NUM> is relatively small.

In addition, a transmission direction of the current in the coil <NUM> may control the direction of the magnetic field generated by the coil <NUM>.

The main magnet <NUM> may be a permanent magnet, or an electromagnet receiving a constant current. In this case, the main magnet <NUM> generates a constant magnetic field with a constant size and direction.

It can be learned from the foregoing description that the first drive signal is the intermediate-frequency or high-frequency signal, and the frequency of the first drive signal is close to the resonance frequency of the sound system. Therefore, under interaction of the foregoing two magnetic fields, the coil <NUM> in the sound system may be enabled to vibrate up and down in a magnetic line cutting manner at a small amplitude and a high frequency along the foregoing Z direction.

In the sound system, the coil <NUM> in the oscillator <NUM> is connected to the display module <NUM>. Therefore, in a process of vibrating up and down along a Z direction, the coil <NUM> can drive the display module <NUM> to vibrate up and down at a small amplitude and a high frequency in a same direction.

In this way, the coil <NUM>, the display module <NUM>, and the foam adhesive <NUM> used to fasten the display module <NUM> form the sound system, and the display module <NUM> is used as a diaphragm to push air to generate sounds in the vibration process, so as to implement sound on display. In this case, the sound system can implement a function of a receiver or a speaker, to play an audio signal.

It should be noted that the frequency of the first drive signal is proportional to a vibration frequency of the display module <NUM>. In addition, a magnitude of the first drive signal, that is, a magnitude of a current flowing into the coil <NUM>, is proportional to a vibration intensity of the display module <NUM>. A direction of the first drive signal, that is, a direction of a current flowing into the coil <NUM>, is proportional to a vibration direction of the display module <NUM>. Therefore, when the first drive signal is changed, a vibration form (including a vibration frequency, an amplitude, a direction, and the like) of the display module <NUM> driven by the coil <NUM> correspondingly changes, so that sounds generated by the sound system are different.

Based on this, to improve a vibration effect of the display module <NUM>, as shown in <FIG> or <FIG>, the oscillator <NUM> further includes a support plate <NUM>. An upper surface of the support plate <NUM> is fixedly mounted on a surface of a side that is of the display module <NUM> and that is close to the middle frame <NUM>, and a lower surface of the support plate <NUM> is fixedly connected to the first magnet <NUM> (for example, the coil <NUM> shown in <FIG> or the main magnet <NUM> shown in <FIG>). In this case, the first magnet <NUM> is connected to the display module <NUM> through the support plate <NUM>.

In this way, because the support plate <NUM> is of a sheet structure, a contact area between the support plate <NUM> and the display module <NUM> is relatively large. Therefore, the upper surface and the lower surface of the support plate <NUM> are respectively in contact with the display module <NUM> and the first magnet <NUM>, so that a contact area between the first magnet <NUM> and the display module <NUM> can be increased, and a driving force provided for the display module <NUM> can be applied to the display module <NUM> more evenly in a vibration process of the first magnet <NUM>.

In addition, by using the support plate <NUM>, a deformed area of the display module <NUM> may be further expanded, so that vibration efficiency of the display module <NUM> driven by the first magnet <NUM> is increased, power consumption is reduced, and a sound on display effect is improved.

It should be noted that a material that forms the support plate <NUM> may be a metal material or another material with a relatively hard texture.

It can be learned from the foregoing description that the first magnet <NUM> (for example, the coil <NUM> shown in <FIG> or the main magnet <NUM> shown in <FIG>), the display module <NUM>, and the foam adhesive <NUM> form the sound system. The resonance frequency of the sound system may be determined by elastic coefficients of the first magnet <NUM>, the support plate <NUM>, the display module <NUM>, and the foam adhesive <NUM>.

In addition, there is a relatively large difference between the frequency of the first drive signal and a resonance frequency of the middle frame <NUM>. Therefore, interaction between the magnetic field generated by the coil <NUM> and the magnetic field of the main magnet <NUM> cannot drive the middle frame <NUM> to move up and down along a Z direction, and the middle frame <NUM> is in a static state.

In conclusion, in the mobile terminal <NUM> in this application, when the coil <NUM> in the oscillator <NUM> receives the intermediate-frequency or high-frequency signal, an electric field generated by the coil <NUM> interacts with an electric field generated by the main magnet <NUM>, so that the coil <NUM> shown in <FIG> can drive the display module <NUM> to vibrate at a relatively small amplitude and a high frequency. The display module <NUM> is used as the diaphragm to push the air to generate sounds. In this way, the coil <NUM>, the display module <NUM>, and the foam adhesive <NUM> used to fasten the display module <NUM> to the middle frame <NUM> form the sound system, to implement the function of the speaker or the receiver.

In this case, a sound hole does not need to be disposed in the mobile terminal <NUM>, so that a problem that sound quality is affected because the sound hole is blocked can be resolved. In addition, a hole opening process in the mobile terminal <NUM> is reduced, so that a surface of a display side of the mobile terminal <NUM> is more flat and rounded.

It should be noted that the structure shown in <FIG> is used as an example for description in the foregoing. A process of implementing sound on display shown in <FIG> is the same as that described above.

In addition, in <FIG>, the coil <NUM> is disposed on the middle frame <NUM> as the second magnet <NUM>. For example, a lower surface of the coil <NUM> may be fastened, by using an adhesive layer, to an upper surface of the support <NUM> connected to the middle frame <NUM>. In this way, it can be learned from the foregoing description that the coil <NUM> needs to be electrically connected to the first signal end S1 of the CPU mounted on the middle frame <NUM>, to separately receive the first drive signal provided by the first signal end S1. Therefore, the coil <NUM> is also mounted on the middle frame <NUM>, so that an electrical connection manner between the coil <NUM> and the CPU can be simplified, and reliability of an electrical connection between the coil <NUM> and the CPU can be improved.

In addition, the first magnet <NUM> is used as the main magnet <NUM> and is disposed on the back facet of the display module <NUM>. This can avoid a problem that a display effect of the display module <NUM> is reduced because the coil <NUM> is heated after the coil <NUM> is powered on in a solution in which the coil <NUM> is used as the first magnet <NUM> and is connected to the display module <NUM>.

A part of the main magnet <NUM> is embedded in a closed region wound by a wire of the coil <NUM>.

In addition, a difference from Example <NUM> lies in that, as shown in <FIG>, the oscillator <NUM> further includes at least one auxiliary magnet <NUM> located around the main magnet <NUM>.

The auxiliary magnet <NUM> and the main magnet <NUM> are located on a same side. In this case, as shown in <FIG>, when the main magnet <NUM> is disposed on the middle frame <NUM> by using the support <NUM>, the auxiliary magnet <NUM> is also disposed on the middle frame <NUM>. Alternatively, when the main magnet <NUM> is disposed on a back facet of the display module <NUM>, the auxiliary magnet <NUM> is also disposed on the back facet of the display module <NUM>.

In addition, there is a gap between the auxiliary magnet <NUM> and the main magnet <NUM>. A part of the coil <NUM> is located in the gap between the auxiliary magnet <NUM> and the main magnet <NUM>.

In this case, as shown in <FIG> or <FIG>, the main magnet <NUM> is located in the closed region wound by the wire of the coil <NUM>. As shown in <FIG>, four auxiliary magnets <NUM> are disposed around the main magnet <NUM>, to form five magnetic circuits. Alternatively, in <FIG>, a circular main magnet <NUM> is located in an annular auxiliary magnet <NUM>, to form dual magnetic circuits.

In this way, the magnetic field generated by the coil <NUM> not only can interact with the magnetic field generated by the main magnet <NUM>, but also can interact with a magnetic field generated by the at least one auxiliary magnet <NUM>, to achieve an objective of improving vibration intensity of the coil <NUM> or vibration intensity of the main magnet <NUM>.

In addition, to support the main magnet <NUM>, or the main magnet <NUM> and the auxiliary magnet <NUM>, as shown in <FIG>, the oscillator <NUM> further includes a magnetic bowl <NUM>. An upper surface of the magnetic bowl <NUM> is fixedly connected to lower surfaces of the main magnet <NUM> and the auxiliary magnet <NUM> by using an adhesive layer. A lower surface of the magnetic bowl <NUM> passes through a hole in the middle frame <NUM>, and is fastened to the upper surface of the support <NUM> by using the adhesive layer.

The magnetic bowl <NUM> may be made of stainless steel. In this case, the magnetic bowl <NUM> may have a magnetic isolation function, to reduce a probability that magnetic fields generated by the main magnet <NUM> and the auxiliary magnet <NUM> have an adverse impact on another device in the mobile terminal <NUM>.

In addition, to improve uniformity of the magnetic fields generated by the main magnet <NUM> and the auxiliary magnet <NUM>, the oscillator <NUM> further includes a washer <NUM> (a black cover layer that is of the main magnet <NUM> and the auxiliary magnet <NUM> and that is close to an upper surface of the display module <NUM> in <FIG>) covered on a surface of a side that is of the main magnet <NUM> and the auxiliary magnet <NUM> and that is close to the display module <NUM>. The washer <NUM> is made of low-carbon steel. The washer has a magnetic conduction function, to reduce magnetic resistance of the main magnet <NUM> and the auxiliary magnet <NUM>. In addition, the washer <NUM> has the magnetic isolation function. It should be noted that the mobile terminal <NUM> shown in <FIG> can also implement the sound on display process described in Example <NUM>.

In addition, in some embodiments of this application, positions of the main magnet <NUM>, the auxiliary magnet <NUM>, and the coil <NUM> in <FIG> may alternatively be exchanged. To be specific, the first magnet <NUM> is the main magnet <NUM>, and the second magnet <NUM> is the coil <NUM>. In this case, the main magnet <NUM> and the auxiliary magnet <NUM> are fastened to the back facet of the display module <NUM>, and the coil <NUM> is fastened to the upper surface of the support <NUM> by passing through the hole on the middle frame. In this case, the washer <NUM> covers a surface of a side that is of the main magnet <NUM> and the auxiliary magnet <NUM> and that is away from the display module <NUM>. A process in which a mobile terminal having this structure implements sound on display is the same as that described above.

In this case, the coil <NUM> may be disposed on a back facet of the display module <NUM>, and the main magnet <NUM> is disposed on the middle frame <NUM>.

Alternatively, as shown in <FIG>, the first magnet <NUM> is a main magnet <NUM>, and the second magnet <NUM> is a coil <NUM>.

In this case, the main magnet <NUM> may be disposed on the back facet of the display module <NUM>, and the coil <NUM> is disposed on the middle frame <NUM>.

In this example, an annular structure shown in <FIG> or <FIG> may be used as a top view structure of the coil <NUM>.

In addition, a difference from Example <NUM> lies in that the main magnet <NUM> is located outside a closed region wound by a wire of the coil <NUM>. The main magnet <NUM> is parallel to a surface opposite to the coil <NUM>.

In this way, in a process of assembling the oscillator <NUM>, the main magnet <NUM> does not need to be embedded in the closed region wound by the wire of the coil <NUM>, resolving a problem that the main magnet <NUM> and the closed region wound by the wire of the coil <NUM> cannot be aligned. Therefore, alignment precision of the main magnet <NUM> and the coil <NUM> is reduced, and difficulty in assembling the entire mobile terminal <NUM> is reduced.

In this case, after the coil <NUM> is powered on, as shown in <FIG>, a magnetic field generated by the coil <NUM> and a magnetic field generated by the main magnet <NUM> may generate an attraction force.

Alternatively, after a direction of a current flowing into the coil <NUM> changes, as shown in <FIG>, a magnetic field generated by the coil <NUM> and a magnetic field generated by the main magnet <NUM> may generate a repulsive force.

In this case, under an effect of the magnetic field generated by the coil <NUM> and the magnetic field generated by the main magnet <NUM>, vibration directions of the coil <NUM> and the main magnet <NUM> are opposite.

It should be noted that when the electrified coil <NUM> and the main magnet <NUM> vibrate close to each other, opposite surfaces of the two are not in contact with each other. When the electrified coil <NUM> and the main magnet <NUM> vibrate away from each other, there is a specific distance between the opposite surfaces of the two. To avoid increasing the thickness of the mobile terminal <NUM>, the distance may be less than or equal to <NUM>. In some embodiments of this application, the distance may further be less than or equal to <NUM>.

The mobile terminal <NUM> shown in <FIG> and <FIG> can also implement the sound on display process described above. A difference lies in that, in this example, when the coil <NUM> in the oscillator <NUM> receives the first drive signal, the magnetic field generated by the coil <NUM> and the magnetic field generated by the main magnet <NUM> enable the coil <NUM> and the main magnet <NUM> to attract or repel each other, so that the first magnet <NUM> (for example, the coil <NUM> shown in <FIG>, or the main magnet <NUM> shown in <FIG>) vibrates, relative to the second magnet <NUM> (for example, the main magnet <NUM> shown in <FIG>, or the coil <NUM> shown in <FIG>), at a small amplitude and a high frequency along a Z direction. In this way, the first magnet <NUM> drives the display module <NUM> to vibrate at a small amplitude and a high frequency, to implement the sound on display.

In addition, to reduce a probability that the magnetic fields generated by the coil <NUM> and the main magnet <NUM> have an adverse impact on another device in the mobile terminal, the mobile terminal <NUM> provided in some embodiments of this application further includes a first magnetic shield <NUM> and a second magnetic shield <NUM> shown in <FIG> or <FIG>.

For the main magnet <NUM>, all surfaces except a surface of a side facing the coil <NUM> are wrapped by the first magnetic shield <NUM>.

For the coil <NUM>, all surfaces except at least a surface of a side facing the main magnet <NUM> are wrapped by the second magnetic shield <NUM>.

The main magnet <NUM> is located outside a closed region wound by a wire of the coil <NUM>. The main magnet <NUM> is parallel to a surface opposite to the coil <NUM>. A structure of the coil <NUM> is the same as that in Example <NUM>.

A difference from Example <NUM> lies in that, as shown in <FIG>, the oscillator <NUM> further includes an auxiliary magnet <NUM>. The auxiliary magnet <NUM> and the coil <NUM> are located on a same side, and the auxiliary magnet <NUM> is embedded in the closed region wound by the wire of the coil <NUM>.

In this way, the magnetic field generated by the coil <NUM> not only can interact with the magnetic field generated by the main magnet <NUM>, but also can interact with a magnetic field generated by the auxiliary magnet <NUM>, to achieve an objective of improving vibration intensity of the coil <NUM> or vibration intensity of the main magnet <NUM>.

In addition, when the mobile terminal <NUM> includes the auxiliary magnet <NUM>, because the auxiliary magnet <NUM> and the coil <NUM> are located on a same side, the auxiliary magnet <NUM> is located in the second magnetic shield <NUM>. A surface that is of the coil <NUM> and that is opposite to the auxiliary magnet <NUM> is not covered by the second magnetic shield <NUM>. In this case, the first magnetic shield <NUM> and the second magnetic shield <NUM> are U-shaped.

On this basis, the first magnetic shield <NUM> and the second magnetic shield <NUM> are made of a magnetic conductive material, so as to reduce diffusion of a magnetic line in the magnetic fields generated by the main magnet <NUM> and the coil <NUM>, thereby achieving an objective of reducing magnetic resistance.

It should be noted that the mobile terminal <NUM> shown in <FIG> can also implement the sound on display process described above.

In addition, in some embodiments of this application, positions of the main magnet <NUM>, the coil <NUM> and the auxiliary magnet <NUM> in <FIG> may alternatively be exchanged. To be specific, the first magnet <NUM> is the main magnet <NUM>, and the second magnet <NUM> is the coil <NUM>. In this case, the main magnet <NUM> is fastened to the back facet of the display module <NUM>, and the coil <NUM> and the auxiliary magnet <NUM> are fastened to the upper surface of the support <NUM> by passing through the hole on the middle frame <NUM>. A process in which a mobile terminal having this structure implements sound on display is the same as that described above.

The foregoing describes a structure of the mobile terminal <NUM> by using an example in which the mobile terminal <NUM> implements the sound on display. In some embodiments of this application, as shown in <FIG>, the mobile terminal <NUM> further includes an elastic element <NUM> connected to the oscillator <NUM>. The elastic element <NUM> is fixedly mounted on the middle frame <NUM>, and the elastic element <NUM> can deform under an action of an external force.

In this case, the coil <NUM> in the oscillator <NUM> is electrically connected to the first signal end S1 of the CPU. The first signal end S1 of the CPU may provide, in a time-division manner, the first drive signal and a second drive signal to the coil <NUM> in the oscillator <NUM>.

Alternatively, in some other embodiments of this application, the coil <NUM> in the oscillator <NUM> is further electrically connected to a second signal end S2 (shown in <FIG>) of the CPU, and the coil <NUM> in the oscillator <NUM> is configured to receive the second drive signal provided by the second signal end S2.

It should be noted that the second drive signal may be a low-frequency signal, for example, a signal whose frequency is less than about <NUM>. For example, when the mobile terminal <NUM> is a mobile phone, the second drive signal may be a vibration signal that is sent by a central processing unit (central processing unit, CPU) of the mobile phone to the coil <NUM> and that is triggered by a signal of an incoming call or a receiving message.

In this case, when the coil <NUM> receives the second drive signal, the oscillator <NUM> vibrates at a large amplitude and a low frequency based on the second drive signal.

Because the elastic element <NUM> is connected to the oscillator <NUM>, when the oscillator <NUM> vibrates at a large amplitude and a low frequency in a Z direction, the elastic element <NUM> can deform due to force, and then vibrate with the oscillator <NUM> along the Z direction.

Because the elastic element <NUM> is fixedly mounted on the middle frame <NUM>, in a vibration process, the elastic element <NUM> can drive the middle frame <NUM> and the mobile terminal <NUM> that includes the display module <NUM> connected to the middle frame <NUM>, the housing <NUM>, and the like, to implement relatively large and low-frequency vibration of the entire mobile terminal. In this case, vibration alert of the mobile phone may be implemented when there is an incoming call or an incoming message. In some embodiments of this application, as shown in <FIG>, the elastic element <NUM> may be a spring plate <NUM>. The spring plate <NUM> is prone to deform under an action of an external force, and vibrates up and down along a Z direction. In this case, when the oscillator <NUM> vibrates at a large amplitude and a low frequency, an acting force can be applied to the spring plate <NUM>. The spring plate <NUM> deforms under the acting force, and vibrates with the oscillator <NUM>.

To implement vibration of the entire mobile terminal, the following describes a structure of the mobile terminal <NUM> having the spring plate <NUM>.

In this example, in order to make the spring plate <NUM> have some bounce space, as shown in <FIG>, a hole is disposed in the middle frame <NUM>, and in a case in which the mobile terminal <NUM> includes the support <NUM>, the mobile terminal <NUM> further includes a support block <NUM>. The spring plate <NUM> and the support block <NUM> are located in the hole on the middle frame <NUM>.

In this case, in an example in which the second magnet <NUM> is the main magnet <NUM> shown in <FIG>, <FIG>, the spring plate <NUM> is located between the second magnet <NUM> and the support <NUM>. The following describes a disposing position of the spring plate <NUM>.

For example, in some embodiments of this application, as shown in <FIG>, the spring plate <NUM> is directly connected to a lower surface of the main magnet <NUM> by using an adhesive layer (a black cover layer on an upper surface of the spring plate <NUM>).

For another example, in some other embodiments of this application, as shown in <FIG>, in a case in which the main magnet <NUM> is located in a closed region wound by a wire of the coil <NUM>, when the mobile terminal <NUM> further includes an auxiliary magnet <NUM> located on a same side as the main magnet <NUM>, the main magnet <NUM> and the auxiliary magnet <NUM> may be disposed on the magnetic bowl <NUM>. In this case, the spring plate <NUM> is connected to a lower surface of the magnetic bowl <NUM> by using an adhesive layer.

For another example, in some other embodiments of this application, as shown in <FIG>, in a case in which the main magnet <NUM> and the coil <NUM> are disposed face to face, and the main magnet <NUM> is located outside the closed region wound by the wire of the coil <NUM>, when the main magnet <NUM> is located in the first magnetic shield <NUM>, the spring plate <NUM> is connected to a lower surface of the first magnetic shield <NUM> by using an adhesive layer.

In addition, based on the structure shown in <FIG>, when the mobile terminal further includes the auxiliary magnet <NUM> shown in <FIG>, because the auxiliary magnet <NUM> is located on a same side as the coil <NUM>, and is embedded in the closed region wound by the wire of the coil <NUM>, the spring plate <NUM> is still connected, by using an adhesive layer, to the lower surface of the first magnetic shield <NUM> in which the main magnet <NUM> is accommodated.

Alternatively, an example in which the second magnet <NUM> is the coil <NUM> shown in <FIG> is used to describe a disposing position of the spring plate <NUM>.

For example, in some other embodiments of this application, as shown in <FIG>, the spring plate <NUM> is directly connected to a lower surface of the coil <NUM> by using an adhesive layer.

For another example, in some other embodiments of this application, as shown in <FIG>, when the main magnet <NUM> and the coil <NUM> are disposed face to face, and the main magnet <NUM> is located outside the closed region wound by the wire of the coil <NUM>, the spring plate <NUM> is connected, by using an adhesive layer, to a lower surface of the second magnetic shield <NUM> in which the coil <NUM> is accommodated.

In addition, the support block <NUM> is disposed between the spring plate <NUM> and the support <NUM>, and an upper surface and a lower surface of the support block <NUM> are respectively connected to the spring plate <NUM> and the support <NUM>.

In this case, with the support of the support block <NUM>, a specific gap may exist between the spring plate <NUM> and the support <NUM> when no external force is applied to the spring plate <NUM>, and the gap may be used as a bounce space in which the spring plate <NUM> deforms under an external force. In addition, when the main magnet <NUM> (or the coil <NUM>) drives the spring plate <NUM> to vibrate in the bounce space, vibration of the spring plate <NUM> may be transferred to the middle frame <NUM> through the support <NUM>.

In addition, in this example, when a structure of the mobile terminal <NUM> is shown in <FIG>, and the spring plate <NUM>, the support block <NUM>, the first magnet <NUM> (for example, the coil <NUM> in <FIG>), the second magnet <NUM> (for example, the main magnet <NUM> in <FIG>), and the auxiliary magnet <NUM> in the mobile terminal <NUM> are all located in the accommodation space <NUM>, to make the spring plate <NUM> have some bounce space, the spring plate <NUM> may be located between the second magnet <NUM> and the middle frame <NUM>, and the spring plate <NUM> may be connected to the second magnet <NUM> by using an adhesive layer.

In addition, the support block <NUM> is disposed between the spring plate <NUM> and the middle frame <NUM>, and an upper surface and a lower surface of the support block <NUM> are respectively connected to the spring plate <NUM> and the middle frame <NUM>.

In this case, with the support of the support block <NUM>, a specific gap may exist between the spring plate <NUM> and the middle frame <NUM> when no external force is applied to the spring plate <NUM>, and the gap may be used as a bounce space in which the spring plate <NUM> deforms under an external force. In addition, when the second magnet <NUM> (for example, the main magnet <NUM> in <FIG>) drives the spring plate <NUM> to vibrate in the bounce space, vibration of the spring plate <NUM> may be transferred to the middle frame <NUM>.

It can be learned from the foregoing description that the spring plate <NUM> can drive the middle frame <NUM> to vibrate, and drive, by using the middle frame <NUM>, the entire mobile terminal <NUM> to vibrate. Therefore, the spring plate <NUM> may be used as a vibration system that drives the entire mobile terminal <NUM> to vibrate. In this case, an elastic coefficient of the spring plate <NUM> can affect a resonance frequency of the vibration system.

The elastic coefficient k, a mass m, and a resonance frequency f of the spring plate <NUM> satisfy the following formula (<NUM>): <MAT>.

In this case, when a material and a size of the selected spring plate <NUM> are different, the resonance frequency of the spring plate <NUM> changes, and the resonance frequency of the vibration system also changes.

Based on this, to make the vibration system have a good vibration effect, a frequency of the second drive signal needs to be the same as or approximately the same as the resonance frequency of the vibration system.

In this case, a structure shown in <FIG> is used as an example to describe a process in which the mobile terminal <NUM> implements vibration of the entire mobile terminal. As shown in <FIG>, the second drive signal provided by the second signal end S2 of the CPU is transmitted to the coil <NUM> in the oscillator <NUM> after being processed by a second power amplifier <NUM>. The second power amplifier <NUM> can amplify the second signal end S2, so that the coil <NUM> identifies an amplified second drive signal.

In this case, after the coil <NUM> receives the second drive signal (that is, a low-frequency signal), the coil <NUM> generates an alternating magnetic field under an action of the second drive signal.

As described above, the main magnet <NUM> generates a constant magnetic field with a constant size and direction.

The second drive signal is a low-frequency signal, and has a relatively large difference from the resonance frequency of the sound system. Therefore, when the two magnetic fields interact with each other, the coil <NUM> in the sound system does not drive the display module <NUM> used as a diaphragm to vibrate at a high frequency, and consequently, the display module <NUM> cannot drive air to make sounds. The sound system is in a non-working state.

In addition, the frequency of the second drive signal is close to the resonance frequency of the spring plate <NUM> used as the vibration system. Therefore, interaction between the magnetic field generated by the coil <NUM> and the magnetic field of the main magnet <NUM> can drive the spring plate <NUM> to move up and down along a Z direction.

In this case, the spring plate <NUM> drives the middle frame <NUM> to vibrate by using the support <NUM>. In addition, the display module <NUM> connected to the middle frame <NUM>, the housing <NUM>, and the like vibrate together at a low frequency and a large amplitude. In this case, the vibration system is in a working state, and the entire mobile terminal <NUM> vibrates. The vibration system may play a role of a motor, and may implement vibration alert of the mobile phone when there is an incoming call or an incoming message.

In this case, the spring plate <NUM> may implement a function of the motor, and the motor does not need to be separately disposed in the mobile terminal <NUM>. Compared with the motor, the spring plate <NUM> has a smaller volume, thereby saving more architecture space. A component with another function, such as a front-facing camera, a rear-facing camera, and a fingerprint sensor, may be disposed in the architecture space. In this way, integration of functions of the mobile terminal <NUM> is improved.

In addition, the structure shown in <FIG> is used as an example to describe a process in which the mobile terminal <NUM> implements sound on display and vibration of the entire mobile terminal.

To implement a sound on display mode and a vibration of the entire mobile terminal <NUM> mode, as shown in <FIG>, the first drive signal provided by the first signal end S1 of the CPU is transmitted to the coil <NUM> in the oscillator <NUM> after being processed by the filter <NUM> and the first power amplifier <NUM>. In addition, the second drive signal provided by the second signal end S2 of the CPU is transmitted to the coil <NUM> after being processed by the second power amplifier <NUM>.

In this case, the coil <NUM> in the oscillator <NUM> may receive both the first drive signal (that is, an intermediate-frequency or high-frequency signal) and the second drive signal (that is, a low-frequency signal).

It should be noted that, when both the first drive signal and the second drive signal are input to the coil <NUM>, a frequency of a superimposed signal received by the coil <NUM> is a sum of a frequency (for example, <NUM>) of the first drive signal and a frequency (for example, <NUM>) of the second drive signal. In this case, a waveform of the superimposed signal is no longer a harmonic waveform.

In this case, the coil <NUM> generates an alternating magnetic field under an action of the superimposed signal. Under an action of the alternating magnetic field and the constant magnetic field generated by the main magnet <NUM>, the coil <NUM> is driven to drive the display module <NUM> to vibrate at a small amplitude and a high frequency in the Z direction. The display module <NUM> is used as a diaphragm to push air to generate sounds in the vibration process, to implement sound on display. In this case, the sound system is in a working state.

In addition, under the action of the alternating magnetic field generated by the superimposed signal and the constant magnetic field generated by the main magnet <NUM>, the coil <NUM> drives the main magnet <NUM> to drive the spring plate <NUM> to move up and down along the Z direction. In this case, the spring plate <NUM> drives the middle frame <NUM> to vibrate by using the support <NUM>. In addition, the display module <NUM> connected to the middle frame <NUM>, the housing <NUM>, and the like vibrate together at a low frequency and a large amplitude. In this case, the vibration system is in a working state, and the entire mobile terminal <NUM> vibrates.

In conclusion, the resonance frequency of the sound system including the first magnet <NUM> (for example, the coil <NUM> shown in <FIG> or the main magnet <NUM> shown in <FIG>), the display module <NUM>, and the foam adhesive <NUM> is far greater than the resonance frequency of the vibration system including the spring plate <NUM>. Therefore, the spring plate <NUM> can work as a frequency divider. When the coil <NUM> receives an intermediate-frequency or high-frequency first drive signal, the first magnet <NUM> drives the display module <NUM> to vibrate, so that the sound system works, thereby implementing the sound on display. When the coil <NUM> receives a low-frequency second drive signal, the second magnet <NUM> drives the spring plate <NUM> and the middle frame <NUM> connected to the spring plate <NUM> to vibrate, so that the vibration system works, thereby implementing the vibration of the entire mobile terminal.

It should be noted that the foregoing describes, by using the mobile terminal <NUM> shown in <FIG> as an example, a process in which the mobile terminal <NUM> implements the sound on display and the vibration of the entire mobile terminal. <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG> may also implement the sound on display and the vibration of the entire mobile terminal.

A disposing manner of the oscillator <NUM> and the spring plate <NUM> in the mobile terminal <NUM> provided in the embodiments of this application may use a structure described in any one of the foregoing examples.

Based on this, to improve uniformity of vibration of the display module <NUM> when the mobile terminal <NUM> makes sounds by implementing the sound on display, and/or uniformity of vibration of the entire mobile terminal when the entire mobile terminal <NUM> vibrates, the mobile terminal <NUM> may include at least two oscillators <NUM>.

As shown in <FIG>, a groove <NUM> for embedding a battery is disposed in a middle position of the middle frame <NUM>. In this case, the two oscillators <NUM> are respectively located at an upper end and a lower end of the groove <NUM>, and are disposed away from a clearance area of an antenna. A hole (not shown in the figure) for embedding the oscillator <NUM> may be disposed in the middle frame <NUM>, or the hole may not be disposed, and the two oscillators <NUM> are directly disposed on the middle frame <NUM>.

An example in which the hole for embedding the oscillator <NUM> may be disposed on the middle frame <NUM> is used. When the mobile terminal <NUM> can implement sound on display, the first magnet <NUM> in the oscillator <NUM> may be disposed on a back facet of the display module <NUM>, and is directly opposite to a position of the hole disposed on the middle frame <NUM>. In addition, a part of the second magnet <NUM> in the oscillator <NUM> is located in the hole, and is fastened to the support <NUM>. The support <NUM> is fastened to the second surface B2 of the middle frame <NUM> by using screws.

Alternatively, when the mobile terminal <NUM> can implement sound on display and entire mobile terminal vibration, as shown in <FIG>, the first magnet <NUM> in the oscillator <NUM>, for example, the main magnet <NUM> shown in <FIG>, may be disposed on the display module <NUM>, and is directly opposite to a position of the hole disposed on the middle frame <NUM>. In addition, the second magnet <NUM> in the oscillator <NUM>, for example, a part of the coil <NUM> shown in <FIG>, and the spring plate <NUM> are located in the hole, and are fastened to the support <NUM>. The support <NUM> is fastened to the second surface B2 of the middle frame <NUM> by using screws.

It can be learned from the foregoing description that the main magnet <NUM> is disposed on the display module <NUM>, and the coil <NUM> is disposed on the middle frame <NUM>. This can avoid a problem that a display effect of the display module <NUM> is reduced because the coil <NUM> is heated. In addition, an electrical connection manner between the coil <NUM> and the CPU can be further simplified, and reliability of an electrical connection between the coil <NUM> and the CPU can be improved.

Alternatively, the first magnet <NUM> in the oscillator <NUM>, for example, the coil <NUM> shown in <FIG>, is disposed on the display module <NUM>, and is directly opposite to a position of the hole disposed on the middle frame <NUM>. In addition, the second magnet <NUM> in the oscillator <NUM>, for example, a part of the main magnet <NUM> shown in <FIG>, and the spring plate <NUM> are located in the hole, and are fastened to the support <NUM>. The support <NUM> is fastened to the second surface B2 of the middle frame <NUM> by using screws.

The foregoing is described by using an example in which the mobile terminal <NUM> includes two oscillators <NUM>. In a case in which the mobile terminal <NUM> has one oscillator <NUM>, the oscillator <NUM> may be disposed on an upper side of the mobile terminal <NUM>. In other words, when a user answers a call, the oscillator <NUM> can be located near an ear of the user. In this way, when the mobile terminal <NUM> implements the sound on display by using the oscillator <NUM>, in a process in which the user answers the mobile phone, an effect of the sound on display at a location of an ear is better, and a voice signal is clearer.

Claim 1:
A mobile terminal (<NUM>), comprising a housing (<NUM>), and a middle frame (<NUM>) and a display module (<NUM>) that are disposed in the housing (<NUM>), wherein
the display module (<NUM>) is connected to the middle frame (<NUM>), and an accommodation space (<NUM>) is formed between the display module (<NUM>) and the middle frame (<NUM>);
the mobile terminal (<NUM>) further comprises a first magnet (<NUM>) and a second magnet (<NUM>), wherein at least a part of the first magnet (<NUM>) and at least a part of the second magnet (<NUM>) are disposed in the accommodation space (<NUM>); and
the first magnet (<NUM>) is disposed on a back facet of the display module (<NUM>), the second magnet (<NUM>) is disposed on the middle frame (<NUM>), and the first magnet (<NUM>) and the second magnet (<NUM>) are disposed face to characterised in that
the mobile terminal (<NUM>) further comprises a support plate (<NUM>) that is configured to improve a vibration effect of the display module (<NUM>), wherein
an upper surface of the support plate (<NUM>) is connected to the display module (<NUM>), and a lower surface of the support plate (<NUM>) is connected to the first magnet (<NUM>); and
an area of the upper surface of the support plate (<NUM>) is greater than an area of a surface of a side that is of the first magnet (<NUM>) and that is close to the support plate (<NUM>).