Patent Description:
This application relates to the field of sound on screen technologies, and in particular, to a mobile terminal.

A user has a higher requirement for a screen-to-body ratio of a mobile terminal, for example, a mobile phone. To increase the screen-to-body ratio of the entire mobile phone, a vibrator may be disposed on a rear face of a display of the mobile phone. The vibrator provides a driving force to the display, to drive the display to vibrate. In this case, the display may be used as a diaphragm, and in a vibration process, air is pushed to produce a sound, to make a sound on screen. Therefore, there is no need to punch a hole or install an earpiece on a front face of the mobile phone, to increase the screen-to-body ratio of the mobile phone.

The vibrator is provided with a coil for generating the driving force. To meet a requirement for the driving force, the coil needs to have a large quantity of turns. However, a quantity of turns of the coil is directly proportional to impedance of the coil, and the impedance of the coil further increases with an increase in a sound making frequency when the sound making frequency is a high frequency. Therefore, when a sound on screen is made on a high frequency band, a current on the coil decreases due to an increase in the impedance. Consequently, a driving force provided by the vibrator to a screen is insufficient, and a high frequency volume of a sound made by the mobile phone is insufficient.

<CIT> describes a sounding device that includes a first housing having a first receiving space with a first opening end; a second housing disposed opposite to and spaced apart from the first housing, the second housing having a second receiving space with a second opening end facing the first opening end, the second housing comprising an end wall opposite to the second opening end; a magnetically conductive core received in the second receiving space and fixed to the end wall; a coil received in the second receiving space and wound around the magnetically conductive core; a first magnet received in the first receiving space; a second magnet received in the second receiving space, the second magnet being located at outside of the coil and spaced apart from the coil; and a third magnet received in the first receiving space and disposed on a peripheral side of the first magnet.

Embodiments of this application provide a mobile terminal, to resolve a problem that there is an insufficient volume on a high frequency band when the mobile terminal makes a sound on screen.

An aspect of embodiments of this application provides a mobile terminal, including a middle frame, a display module, and at least one vibrator. The display module is connected to the middle frame, and an accommodation cavity is formed between the display module and the middle frame. At least a part of the vibrator is disposed inside the accommodation cavity. The vibrator includes a first magnet, a second magnet, a coil, and at least one third magnet. In a direction perpendicular to a display surface of the display module, the vibrator is configured to drive the display module to vibrate upwards and downwards. The first magnet, the coil, and the third magnet are all connected to a rear face of the display module. The first magnet is located in a closed region enclosed by a conducting wire of the coil. The third magnet is located on one side that is of the coil and that is away from the first magnet. The second magnet is connected to the middle frame, and a location of the second magnet and a location of the first magnet are disposed opposite each other. A first pole of the first magnet, a first pole of the second magnet, and a second pole of the third magnet are close to each other, so that at least some magnetic lines of force pass through the coil from a surface that is of the coil and that is close to the first magnet and a surface that is of the coil and that is close to the third magnet. Therefore, a third magnet located outside the coil is added to the vibrator, and a magnetization direction of the third magnet is set, in other words, the first pole of the first magnet, the first pole of the second magnet, and the second pole of the third magnet are close to each other, to forcibly specify a path and a direction of a magnetic line of force in space in which a magnet is located. In addition, because the at least some magnetic lines of force may pass through the coil from the surface that is of the coil and that is close to the first magnet and the surface that is of the coil and that is close to the third magnet, directions of most of magnetic lines of force entering the coil approximate to a horizontal direction. A component that is in the horizontal direction and that is of the magnetic lines of force entering the coil can drive the coil to vibrate in a vertical direction (the direction perpendicular to the display surface of the display module) in a magnetic field. Therefore, when the directions of most of the magnetic lines of force entering the coil approximate to the horizontal direction, the component that is in the horizontal direction and that is of the magnetic lines of force entering the coil increases. Therefore, a driving force that is of the coil and that is used to drive the display module to vibrate in the vertical direction can be increased. Therefore, when the vibrator provided in this embodiment of this application is used to drive the display module to make a sound on screen, a quantity of turns of the coil may be appropriately reduced when the driving force provided by the vibrator remains unchanged, to reduce impedance of the coil. Therefore, when a sound on screen is made on a high frequency band, a current on the coil does not decrease due to an increase in the impedance, to effectively resolve a problem that a high frequency volume of the mobile terminal is insufficient. In addition, when the quantity of turns of the coil is reduced, a size of the coil is also reduced, to help reduce a dimension of the vibrator. In addition, because the component that is in the horizontal direction and that is of the magnetic lines of force entering the coil increases, a component that is in the vertical direction and that is of the magnetic lines of force entering the coil decreases. Therefore, a vibration amplitude of the coil in the horizontal direction can be reduced, and a shear force between the coil and the display module can be reduced. Further, when the coil and the display module are bound and fastened by using an adhesive layer, a problem that degumming of the coil occurs due to the shear force in a vibration process, and consequently, product reliability is reduced may be avoided.

Optionally, a magnetization direction of the third magnet is perpendicular to the display surface of the display module. A first pole of the third magnet is close to the display module, and the second pole of the third magnet is away from the display module. In this case, outside the second magnet, after passing through the coil from the first pole of the second magnet, the magnetic line of force may enter the second pole that is of the third magnet and that is closest to the first pole of the second magnet. In addition, the third magnet is disposed on one side that is of the coil and that is away from the first magnet, the third magnet and the coil are disposed in parallel, and the coil protrudes from the first magnet on one side close to the middle frame in the direction perpendicular to the display surface of the display module. Therefore, a surface that is of the coil and that is close to the first magnet is not blocked by the first magnet, so that outside the second magnet, after departing from the first pole of the second magnet, the magnetic line of force enters the coil from a part that is of the coil, that is close to the first magnet, and that is not blocked by the first magnet. Therefore, the directions of most of the magnetic lines of force entering the coil approximate to the horizontal direction.

Optionally, a magnetization direction of the third magnet is parallel to the display surface of the display module. The second pole of the third magnet is close to the first magnet, and a first pole of the third magnet is away from the first magnet. Similarly, outside the second magnet, after passing through the coil from the first pole of the second magnet, the magnetic line of force enters the second pole that is of the third magnet and that is closest to the first pole of the second magnet. Therefore, the directions of most of the magnetic lines of force entering the coil approximate to the horizontal direction.

Optionally, the vibrator further includes a magnetic conductive sheet. The magnetic conductive sheet is disposed on a surface of one side on which the first pole of the first magnet is located, and a magnetic conduction direction of the magnetic conductive sheet is parallel to the display surface of the display module. Under a magnetic conduction action of the magnetic conductive sheet, outside the second magnet, after departing from the first pole of the second magnet, the magnetic line of force enters the magnetic conductive sheet, travels in the horizontal direction, and enters the coil. Therefore, a quantity of magnetic lines of force approaching the horizontal direction in the coil can be increased.

Optionally, the vibrator includes a plurality of third magnets distributed around the coil. Two adjacent third magnets are connected by using an adhesive layer. Therefore, the plurality of third magnets may be connected by using an adhesive, and robustness of the plurality of third magnets may be enhanced. In addition, each independent third magnet may be more easily processed.

Optionally, a cross section of the third magnet is in a fan shape. A radian of a surface of one side that is of the third magnet and that is close to the coil coincides with a radian of an outer surface of the coil. The cross section is parallel to the display surface of the display module. Therefore, component space inside the vibrator is increased, and dimension interference between adjacent components is reduced. In addition, when the third magnet and the coil are bound by using an adhesive, the third magnet and the coil can be bound more closely.

Optionally, a cross section of the third magnet is in an annular shape. Both the coil and the first magnet are located in the annular shape. A radian of a surface of one side that is of the third magnet and that is close to the coil coincides with a radian of an outer surface of the coil. The cross section is parallel to the display surface of the display module. In this case, a periphery of the first magnet may be enclosed by the third magnet, and strength of a magnetic field provided by the third magnet may be increased.

Optionally, the vibrator further includes at least one fourth magnet. The fourth magnet is connected to the middle frame. A magnetization direction of the fourth magnet is parallel to the display surface of the display module and faces an inside of the vibrator. Therefore, strength of a magnetic field inside the vibrator may be further increased, and a quantity of magnetic lines of force entering the coil can be further increased, to increase the driving force applied by the coil to the display module.

Optionally, the vibrator includes a plurality of fourth magnets distributed around the second magnet. Two adjacent fourth magnets are connected by using an adhesive layer. Therefore, the plurality of fourth magnets may be connected by using an adhesive, and robustness of the plurality of fourth magnets may be enhanced. In addition, each independent fourth magnet may be more easily processed.

Optionally, a cross section of the second magnet is in a circular shape. A cross section of the fourth magnet is in a fan shape. A radian of a surface of one side that is of the fourth magnet and that is close to the second magnet coincides with a radian of a surface of one side that is of the second magnet and that is close to the fourth magnet. The cross section is parallel to the display surface of the display module. Therefore, installation of the fourth magnet can be facilitated, and a probability of dimension interference between components in the vibrator can be reduced.

Optionally, a cross section of the second magnet is in a circular shape. A cross section of the fourth magnet is in an annular shape. The second magnet is located in the annular shape. A radian of a surface of one side that is of the fourth magnet and that is close to the second magnet coincides with a radian of a surface of one side that is of the second magnet and that is close to the fourth magnet. The cross section is parallel to the display surface of the display module. In this case, a periphery of the second magnet may be enclosed by the fourth magnet, and strength of a magnetic field provided by the fourth magnet may be increased.

Optionally, the middle frame is provided with an opening. The mobile terminal further includes a support. At least a part of the second magnet is located in the opening on the middle frame. The support is disposed on a surface of one side that is of the middle frame and that is away from the display module, and is connected to the middle frame. The second magnet passes through the opening and is disposed on the support. Therefore, when a dimension of a gap H between a bearing plate of the middle frame and the rear face of the display module is limited, the vibrator may be disposed on the support on the side that is of the middle frame and that is away from the display module, so that a part of the vibrator is located in the accommodation cavity formed between the middle frame and the display module, to help reduce a thickness of the mobile terminal.

Optionally, the mobile terminal further includes a first magnetic insulation cover and a second magnetic insulation cover. The first magnetic insulation cover is connected to the rear face of the display module. The first magnet, the third magnet, and the coil are all located in the first magnetic insulation cover, and are all connected to an inner wall of the first magnetic insulation cover. The first magnetic insulation cover is configured to carry the first magnet, the third magnet, and the coil. The second magnetic insulation cover is connected to the middle frame. The second magnet is located in the second magnetic insulation cover, and is connected to an inner wall of the second magnetic insulation cover. The second magnetic insulation cover is configured to carry the second magnet. In addition, the first magnetic insulation cover and the second magnetic insulation cover may be made of a magnetic conductive material, to reduce diffusion of magnetic lines of force in a magnetic field including the first magnet, the second magnet, the coil, and the third magnet, and reduce magnetic resistance.

Optionally, when the vibrator includes the fourth magnet, the fourth magnet is located in the second magnetic insulation cover and is connected to the inner wall of the second magnetic insulation cover. The fourth magnet may be disposed in the second magnetic insulation cover, and the second magnetic insulation cover can be used to reduce diffusion of magnetic lines of force in the magnetic field of the fourth magnet.

Optionally, the mobile terminal further includes a support sheet. An upper surface of the support sheet is connected to the display module. A lower surface of the support sheet is connected to the first magnetic insulation cover. An area of the upper surface of the support sheet is greater than an area of a surface of one side that is of the first magnetic insulation cover and that is close to the support sheet. Therefore, a contact area between the support sheet and the display module is large because the support sheet is of a sheet structure. Therefore, the upper surface and the lower surface of the support sheet are respectively in contact with the display module and the vibrator, to increase a contact area between the vibrator and the display module, so that the driving force provided by the vibrator to the display module can be applied to the display module more evenly in a vibration process. In addition, the support sheet may be used to further enlarge an area of a deformation region of the display module, increase efficiency of driving, by the vibrator, the display module to vibrate, reduce power consumption, and improve an effect of making a sound on screen.

<NUM>: Mobile terminal; <NUM>: Display module; <NUM>: Middle frame; <NUM>: Frame; <NUM>: Bearing plate; <NUM>: Housing; <NUM>: Display; <NUM>: BLU; <NUM>: Accommodation cavity; <NUM>: Vibrator; <NUM>: Coil; <NUM>: First magnet; <NUM>: Second magnet; <NUM>: Third magnet; <NUM>: Support; <NUM>: Opening; <NUM>: First magnetic insulation cover; <NUM>: Second magnetic insulation cover; <NUM>: Fourth magnet; <NUM>: Support sheet; and <NUM>: Magnetic conductive sheet.

The following describes the technical solutions in embodiments of this application with reference to the accompanying drawings in embodiments of this application. It is clear that the described embodiments are merely a part rather than all of embodiments of this application.

The terms "first" and "second" mentioned below 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 the number of indicated technical features. Therefore, a feature limited by "first " or "second" may explicitly indicate or implicitly include one or more such features. In the descriptions of this application, unless otherwise stated, "a plurality of" means two or more than two.

In addition, in this application, directional terms such as "up", "down", "left", and "right" may be defined relative to a direction including but not limited to an example direction in which a component in the accompanying drawings is placed. It should be understood that these directional terms may be relative concepts. The directional terms are used for relative description and clarification, and may correspondingly vary with the direction in which the component in the accompanying drawings is placed.

In this application, the term "connection" should be understood in a broad sense unless otherwise expressly specified and limited. For example, "connection" may be a fixed connection, may be a detachable connection or an integrated connection, may be a direct connection, or may be an indirect connection based on an intermediate medium.

An embodiment of this application provides a mobile terminal. The mobile terminal includes an electronic product that can be used to make a call and perform display in a handheld mode, for example, a mobile phone, a tablet computer, or a smart watch. A specific form of the mobile terminal is not specifically limited in this embodiment of this application. For ease of description, the following provides descriptions by using an example in which the mobile terminal is a mobile phone shown in <FIG>.

As shown in <FIG>, the mobile terminal <NUM> mainly includes but is not limited to a display module <NUM>. The display module <NUM> may include a display (display panel, DP). In some embodiments of this application, as shown in <FIG>, a display <NUM> may be a liquid crystal display (liquid crystal display, LCD). In this case, as shown in <FIG>, the display module <NUM> further includes a backlight unit (backlight unit, BLU) <NUM> for providing a light source to the LCD. The LCD may be a hard display.

Alternatively, in some other embodiments of this application, as shown in <FIG>, a display <NUM> may be an organic light-emitting diode (organic light emitting diode, OLED) display. The OLED display can be self-luminous. Therefore, the BLU <NUM> does not need to be disposed in the display module <NUM>. The OLED display may be a hard display. Alternatively, when a substrate of the OLED display is a flexible substrate, the OLED display may be a flexible display.

In addition, the mobile terminal <NUM> further includes a middle frame <NUM> and a housing <NUM> shown in <FIG>. The display module <NUM> and the housing <NUM> are respectively located on two sides of the middle frame <NUM>. The middle frame <NUM> includes a bearing plate <NUM> parallel to or approximately parallel to the display module <NUM>, and a frame <NUM> disposed around the bearing plate <NUM>. An internal component such as a battery, a printed circuit board (printed circuit board, PCB), a camera (Camera), or an antenna is disposed on a surface of one side of that is of the bearing plate <NUM> and that is close to the housing <NUM>.

As shown in <FIG>, one side that is of the middle frame <NUM> and that is close to the display module <NUM> may be connected to the display module <NUM> by using a foam adhesive <NUM>. There is a gap H between the bearing plate <NUM> of the middle frame <NUM> and a rear face B of the display module <NUM> (a surface opposite to a display surface A of the display module <NUM>), so that an accommodation cavity <NUM> is formed between the display module <NUM> and the middle frame <NUM>. To make a sound on screen, the mobile terminal <NUM> further includes at least one vibrator <NUM> shown in <FIG>. At least a part of the vibrator <NUM> is disposed in the accommodation cavity <NUM>. In a direction perpendicular to the display surface A of the display module <NUM> (namely, a direction Y in <FIG>), the vibrator <NUM> is configured to drive the display module <NUM> to vibrate upwards and downwards.

The following provides, by using a specific example, example descriptions of a structure of the vibrator <NUM> and a manner of disposing at least a part of the vibrator <NUM> in the accommodation cavity <NUM>.

In this example, when a dimension of the gap H between the bearing plate <NUM> of the middle frame <NUM> and the rear face B of the display module <NUM> is limited, as shown in <FIG>, at least a part of the vibrator <NUM> may be disposed in the accommodation cavity <NUM>.

The vibrator <NUM> may include a first magnet <NUM>, a second magnet <NUM>, a coil <NUM>, and at least one third magnet <NUM> shown in <FIG>. The first magnet <NUM>, the coil <NUM>, and the third magnet <NUM> are all connected to the rear face B of the display module <NUM>. As shown in <FIG>, the first magnet <NUM> may be located in a closed region enclosed by a conducting wire of the coil <NUM>. In addition, as shown in <FIG>, the second magnet <NUM> is connected to the bearing plate <NUM> of the middle frame <NUM>. In addition, a location of the second magnet <NUM> and a location of the first magnet <NUM> are disposed opposite each other.

In addition, to connect the first magnet <NUM>, the coil <NUM>, and the third magnet <NUM> to the rear face B of the display module <NUM>, as shown in <FIG>, the mobile terminal <NUM> further includes a first magnetic insulation cover <NUM> and a second magnetic insulation cover <NUM>. The first magnetic insulation cover <NUM> may be connected to the rear face B of the display module <NUM> by using an adhesive. The first magnet <NUM>, the coil <NUM>, and the third magnet <NUM> are all located in the first magnetic insulation cover <NUM>, and are all connected to an inner wall of the first magnetic insulation cover <NUM> through binding by using an adhesive. The first magnetic insulation cover <NUM> may be in a U shape, so that bottom surfaces (surfaces facing the display module <NUM>) and side surfaces (surfaces perpendicular to the display module <NUM>) of the first magnet <NUM>, the coil <NUM>, and the third magnet <NUM> can be wrapped. To improve reliability of the vibrator <NUM>, the first magnet <NUM>, the coil <NUM>, and the third magnet <NUM> may be fastened by using an adhesive.

The second magnetic insulation cover <NUM> may be connected to the middle frame <NUM> by using an adhesive. The second magnet <NUM> is located in the second magnetic insulation cover <NUM>, and is connected to an inner wall of the second magnetic insulation cover <NUM> through binding by using an adhesive. Similarly, the second magnetic insulation cover <NUM> may also be in a U shape, so that a bottom surface (a surface facing the bearing plate <NUM> of the middle frame <NUM>) and a side surface (a surface perpendicular to the display module <NUM>) of the second magnet <NUM> can be wrapped.

In addition, the first magnetic insulation cover <NUM> and the second magnetic insulation cover <NUM> may be made of a magnetic conductive material, to reduce diffusion of magnetic lines of force in a magnetic field including the first magnet <NUM>, the second magnet <NUM>, the coil <NUM>, and the third magnet <NUM>, and reduce magnetic resistance.

To dispose at least a part of the vibrator <NUM> in the accommodation cavity <NUM>, as shown in <FIG>, the mobile terminal <NUM> further includes a support <NUM>. At least a part of the second magnet <NUM> is located in an opening <NUM> on the middle frame <NUM>. The support <NUM> is disposed on a surface of one side that is of the middle frame <NUM> and that is away from the display module <NUM>, and may be connected to the middle frame <NUM> through adhesive layer bonding, or by using a connecting piece such as a screw or a pin. In addition, the middle frame <NUM> may be provided with the opening <NUM>, and the second magnet <NUM> passes through the opening <NUM>, is disposed on the support <NUM>, and is connected to the support <NUM>.

In this case, the coil <NUM> is energized, a direction of a current flowing into the coil is alternately changed, and a magnetic field generated by the coil <NUM> may interact with a magnetic field generated by the second magnet <NUM>, so that a mutually attractive or repulsive force can be generated between the coil <NUM> and the second magnet <NUM> in a direction in which the current flows. Therefore, in the direction perpendicular to the display surface A of the display module <NUM> (namely, the direction Y in <FIG>), the coil <NUM> may drive the display module <NUM> to vibrate upwards and downwards.

In a process in which the coil <NUM> vibrates upwards and downwards in the direction Y, the coil <NUM> may drive the display module <NUM> to vibrate upwards and downwards in a same direction. Therefore, in a sound making system that mainly includes the vibrator <NUM> and the display module <NUM>, the display module <NUM> is used as a diaphragm, and in a vibration process, air is pushed to produce a sound, to make a sound on screen. In this case, the sound making system can perform a function of an earpiece or a speaker, to play an audio signal. Therefore, there is no need to punch a hole or install an earpiece on a front face of the mobile terminal <NUM>, to increase a screen-to-body ratio of the mobile terminal <NUM>.

In addition, a magnetization direction of the second magnet <NUM> is opposite to a magnetization direction of the first magnet <NUM>, so that a repulsive force can be generated between the second magnet <NUM> and the first magnet <NUM>, the coil <NUM> vibrates more easily, and strength of a magnetic field inside the vibrator <NUM> is increased.

It should be noted that any magnet in this embodiment of this application may be a permanent magnet. The magnet has a first pole, for example, an N pole (or an S pole), and a second pole, for example, an S pole (or an N pole). A setting manner of the first pole and the second pole of the magnet is not limited in this application. A magnetization direction of the magnet is a direction in which a magnetic line of force inside the magnet points from the S pole to the N pole.

For ease of description, in some embodiments of this application, the following provides descriptions by using an example in which a first pole of a magnet shown in <FIG> is an N pole and a second pole is an S pole.

Based on this, in order that the magnetization direction of the second magnet <NUM> is opposite to the magnetization direction of the first magnet <NUM>, a pole of the first magnet <NUM> and a pole of the second magnet <NUM> need to be opposite. For example, as shown in <FIG>, a first pole (for example, an N pole) of the first magnet <NUM> faces downwards (away from the display module <NUM>), and a second pole (for example, an S pole) faces upwards (close to the display module <NUM>). A first pole (for example, an N pole) of the second magnet <NUM> faces upwards, and a second pole (for example, an S pole) faces downwards.

In addition, in this embodiment provided in this application, to further increase a driving force provided by the vibrator <NUM> to the display module <NUM>, the vibrator <NUM> further includes a third magnet <NUM> shown in <FIG>. The third magnet <NUM> is located on one side that is of the coil <NUM> and that is away from the first magnet <NUM>. A second pole (for example, an S pole) of the third magnet <NUM> is close to the first pole (for example, the N pole) of the first magnet <NUM> and the first pole (for example, the N pole) of the second magnet <NUM>.

For example, in this example, as shown in <FIG>, a magnetization direction of the third magnet <NUM> is perpendicular to the display surface A of the display module <NUM>. The second pole (for example, the S pole) of the third magnet <NUM> faces downwards (away from the display module <NUM>), and therefore, can be close to the first pole (for example, the N pole) of the first magnet <NUM> and the first pole (for example, the N pole) of the second magnet <NUM>. In addition, the first pole (for example, the N pole) of the third magnet <NUM> faces upwards (close to the display module <NUM>).

It can be learned from the foregoing that the magnetization direction of the second magnet <NUM> is opposite to the magnetization direction of the first magnet <NUM>. Therefore, as shown in <FIG>, the first pole (for example, the N pole) of the first magnet <NUM> is close to the first pole (for example, the N pole) of the second magnet <NUM>. In addition, the second pole (for example, the S pole) of the third magnet <NUM> is close to the first pole (for example, the N pole) of the first magnet <NUM> and the first pole (for example, the N pole) of the second magnet <NUM>. Therefore, the first pole (for example, the N pole) of the first magnet <NUM>, the first pole (for example, the N pole) of the second magnet <NUM>, and the second pole (for example, the S pole) of the third magnet <NUM> are close to each other.

A magnetic line of force generated by the magnet goes from the S pole to the N pole inside the magnet, and goes from the N pole to a nearest S pole outside the magnet, to close the magnetic line of force. When the first pole (for example, the N pole) of the first magnet <NUM>, the first pole (for example, the N pole) of the second magnet <NUM>, and the second pole (for example, the S pole) of the third magnet <NUM> are close to each other, as shown in <FIG>, a magnetic line of force (shown by small black arrows in the figure) goes from the second pole (for example, the S pole) of the second magnet <NUM> to the first pole (the N pole) inside the second magnet <NUM>. In addition, the second pole (for example, the S pole) of the third magnet <NUM> is closer to the first pole (for example, the N pole) of the second magnet <NUM> than the second pole (for example, the S pole) of the second magnet <NUM> outside the second magnet <NUM>. Therefore, outside the second magnet <NUM>, after passing through the coil <NUM> from the first pole (for example, the N pole) of the second magnet <NUM>, the magnetic line of force enters the nearest second pole (for example, the S pole) of the third magnet <NUM>.

In addition, it can be learned from the foregoing that the third magnet <NUM> is disposed on the side that is of the coil <NUM> and that is away from the first magnet <NUM>, and the third magnet <NUM> and the coil <NUM> are disposed in parallel. Therefore, outside the second magnet <NUM>, after departing from the first pole (for example, the N pole) of the second magnet <NUM>, the magnetic line of force enters the coil <NUM> in a direction approximating to a horizontal direction X (parallel to a horizontal plane A of the display module <NUM>), exits through the coil <NUM> from a surface that is of the coil <NUM> and that is close to the third magnet <NUM>, and enters the second pole (for example, the S pole) of the third magnet <NUM> that is horizontal to the coil <NUM>.

In addition, in some embodiments of this application, as shown in <FIG>, the coil <NUM> protrudes from the first magnet <NUM> on one side close to the middle frame <NUM> in the direction (the direction Y) perpendicular to the display surface A of the display module <NUM>. Therefore, a surface (a left side) that is of the coil and that is close to the first magnet <NUM> is not blocked by the first magnet <NUM>.

Based on this, similarly, as shown in <FIG>, a magnetic line of force goes from the second pole (for example, the S pole) of the first magnet <NUM> to the first pole (the N pole) inside the first magnet <NUM>. Then, because the surface (the left side) that is of the coil and that is close to the first magnet <NUM> is not blocked by the first magnet <NUM>, outside the first magnet <NUM>, after departing from the first pole (for example, the N pole) of the first magnet <NUM>, the magnetic line of force enters, in a direction approximating to the horizontal direction X (parallel to the horizontal plane A of the display module <NUM>), the coil <NUM> from the surface that is of the coil <NUM>, that is close to the first magnet <NUM>, and that is not blocked by the first magnet <NUM>, exits from the surface that is of the coil <NUM> and that is close to the third magnet <NUM>, and enters the second pole (for example, the S pole) of the third magnet <NUM> that is horizontal to the coil <NUM>. In this case, the magnetic line of force may pass through the coil <NUM> from the surface that is of the coil <NUM> and that is close to the first magnet <NUM> and the surface that is of the coil <NUM> and that is close to the third magnet <NUM>. Therefore, the magnetic line of force inside the coil <NUM> may approximate to the horizontal direction X.

Alternatively, in some other embodiments of this application, as shown in <FIG>, the vibrator <NUM> may further include a magnetic conductive sheet <NUM>. The magnetic conductive sheet <NUM> is disposed on a surface of one side on which the first pole (for example, the N pole) of the first magnet <NUM> is located. A magnetic conduction direction of the magnetic conductive sheet <NUM> is parallel to the display surface A (the horizontal direction X) of the display module <NUM>.

In this case, as shown in <FIG>, a magnetic line of force goes from the second pole (for example, the S pole) of the first magnet <NUM> to the first pole (N pole) inside the first magnet <NUM>. Then, outside the first magnet <NUM>, after departing from the first pole (for example, the N pole) of the first magnet <NUM>, under a magnetic conduction action of the magnetic conductive sheet <NUM>, the magnetic line of force (shown by small black arrows in the figure) enters, in a direction approximating to the horizontal direction X (parallel to the horizontal plane A of the display module <NUM>), the coil <NUM> from the surface that is of the coil <NUM> and that is close to the first magnet <NUM>, exits from the surface that is of the coil <NUM> and that is close to the third magnet <NUM>, and enters the second pole (for example, the S pole) of the third magnet <NUM> that is horizontal to the coil <NUM>. In this case, the magnetic line of force may pass through the coil <NUM> from the surface that is of the coil <NUM> and that is close to the first magnet <NUM> and the surface that is of the coil <NUM> and that is close to the third magnet <NUM>. Therefore, the magnetic line of force inside the coil <NUM> may approximate to the horizontal direction X.

It should be noted that a material constituting the magnetic conductive sheet <NUM> may be a magnetic conductive metal material. In addition, a dimension of the magnetic conductive sheet <NUM> in the direction X is far greater than a dimension of the magnetic conductive sheet <NUM> in a thickness direction (namely, the direction Y), so that the magnetic conduction direction of the magnetic conductive sheet <NUM> is parallel to the display surface A (the horizontal direction X) of the display module <NUM>.

Therefore, a third magnet <NUM> located outside the coil <NUM> is added to the vibrator <NUM>, and the magnetization direction of the third magnet <NUM> is set, in other words, the first pole (for example, the N pole) of the first magnet <NUM>, the first pole (for example, the N pole) of the second magnet <NUM>, and the second pole (for example, the S pole) of the third magnet <NUM> are close to each other, to forcibly specify a path and a direction of a magnetic line of force in space in which a magnet is located. Therefore, as shown in <FIG>, directions of most of magnetic lines of force (black arrows in the figure) entering the coil <NUM> approximate to the horizontal direction X.

A component that is in the horizontal direction X and that is of the magnetic lines of force entering the coil <NUM> can drive the coil <NUM> to vibrate in a vertical direction Y (the direction perpendicular to the display surface of the display module <NUM>) in the magnetic field. Therefore, when the directions of most of the magnetic lines of force <NUM> entering the coil <NUM> approximate to the horizontal direction X, the component that is in the horizontal direction X and that is of the magnetic lines of force entering the coil <NUM> increases. Therefore, a driving force that is of the coil <NUM> and that is used to drive the display module <NUM> to vibrate in the vertical direction Y can be increased. Therefore, when the vibrator <NUM> provided in this embodiment of this application is used to drive the display module <NUM> to make a sound on screen, a quantity of turns of the coil <NUM> may be appropriately reduced when the driving force provided by the vibrator <NUM> remains unchanged, to reduce impedance of the coil <NUM>. Therefore, when a sound on screen is made on a high frequency band, a current on the coil does not decrease due to an increase in the impedance, to effectively resolve a problem that a high frequency volume of the mobile terminal <NUM> is insufficient.

In addition, because the component that is in the horizontal direction X and that is of the magnetic lines of force entering the coil <NUM> increases, a component that is in the vertical direction Y and that is of the magnetic lines of force entering the coil <NUM> decreases. Therefore, a vibration amplitude of the coil <NUM> in the horizontal direction X can be reduced, and a shear force between the coil <NUM> and the display module <NUM> can be reduced. Further, when the coil <NUM> and the display module <NUM> are bound and fastened by using an adhesive layer, a problem that degumming of the coil <NUM> occurs due to the shear force in the vibration process, and consequently, product reliability is reduced may be avoided.

If a manufacturing process permits, a thickness (a dimension in the direction X) of the third magnet <NUM> may be as small as possible, for example, may be approximately <NUM> or <NUM>. In addition, in order to not affect a force between the first magnet <NUM> and the second magnet <NUM>, the thickness of the third magnet <NUM> may not exceed a half of a dimension of the first magnet <NUM> in the direction X.

It should be noted that, a quantity of disposed third magnets <NUM> is not limited in this application. For example, in some embodiments, the vibrator <NUM> may be provided with one third magnet <NUM>. Alternatively, as shown in <FIG>, in some embodiments of this application, the vibrator <NUM> may include a plurality of third magnets <NUM> distributed around the coil <NUM>. Two adjacent third magnets <NUM> may be connected by using an adhesive layer.

Based on this, to facilitate installation of the third magnet <NUM>, as shown in <FIG>, a cross section (an XOZ plane) of the third magnet <NUM> is in a fan shape. A radian of a surface of one side that is of the third magnet <NUM> and that is close to the coil <NUM> coincides with a radian of an outer surface (namely, the surface close to the third magnet <NUM>) of the coil <NUM>. Therefore, component space inside the vibrator <NUM> is increased, and dimension interference between adjacent components is reduced. In addition, when the third magnet <NUM> and the coil <NUM> are bound by using an adhesive, the third magnet <NUM> and the coil <NUM> can be bound more closely.

Alternatively, in some other embodiments of this application, as shown in <FIG>, a cross section (an XOZ plane) of the third magnet <NUM> is in an annular shape. Both the coil <NUM> and the first magnet <NUM> are located in the annular shape. Similarly, to facilitate installation of the third magnet <NUM>, a radian of a surface of one side that is of the third magnet <NUM> and that is close to the coil <NUM> coincides with a radian of an outer surface of the coil <NUM>.

It should be noted that the cross section (the XOZ plane) of the third magnet <NUM> is parallel to the display surface A of the display module <NUM>.

In addition, the vibrator <NUM> may further include at least one fourth magnet <NUM> shown in <FIG>. When the vibrator <NUM> includes the second magnetic insulation cover <NUM>, the fourth magnet <NUM> may be located in the second magnetic insulation cover <NUM>, and is connected to the inner wall of the second magnetic insulation cover <NUM> through binding by using an adhesive. In addition, to further improve the reliability of the vibrator <NUM>, the fourth magnet <NUM> may also be bound to the second magnet <NUM> by using an adhesive.

A magnetization direction of the fourth magnet <NUM> is parallel to the display surface A of the display module <NUM> and faces an inside of the vibrator <NUM>. For example, an S pole of the fourth magnet <NUM> is away from the second magnet <NUM>, and an N pole of the fourth magnet <NUM> is close to the second magnet <NUM>. In this case, a magnetic line of force points from the S pole of the fourth magnet <NUM> to the second magnet <NUM> inside the fourth magnet <NUM>. In other words, the magnetization direction (the S pole points to the N pole) of the fourth magnet <NUM> faces the inside of the vibrator <NUM>. Therefore, strength of a magnetic field inside the vibrator <NUM> may be further increased, and a quantity of magnetic lines of force entering the coil <NUM> in <FIG> can be further increased, to increase the driving force applied by the coil <NUM> to the display module.

If a manufacturing process permits, a thickness (a dimension in the direction X) of the fourth magnet <NUM> may be as small as possible, for example, may be approximately <NUM> or <NUM>. In addition, in order to not affect a force between the first magnet <NUM> and the second magnet <NUM>, the thickness of the fourth magnet <NUM> may not exceed a half of a dimension of the second magnet <NUM> in the direction X.

It should be noted that, a quantity of disposed fourth magnets <NUM> is not limited in this application. For example, in some embodiments, the vibrator <NUM> may be provided with one fourth magnet <NUM>. Alternatively, as shown in <FIG>, in some embodiments of this application, the vibrator <NUM> may include a plurality of fourth magnets <NUM> distributed around the second magnet <NUM>. Two adjacent fourth magnets <NUM> may be connected by using an adhesive layer.

When a cross section of the second magnet <NUM> is in a circular shape, to facilitate installation of the fourth magnet <NUM> and reduce a probability of dimension interference between components in the vibrator <NUM>, as shown in <FIG>, a cross section of the fourth magnet <NUM> may be in a fan shape. A radian of a surface of one side that is of the fourth magnet <NUM> and that is close to the second magnet <NUM> coincides with a radian of a surface of one side that is of the second magnet <NUM> and that is close to the fourth magnet <NUM>.

Alternatively, in some other embodiments of this application, as shown in <FIG>, a cross section (an XOZ plane) of the fourth magnet <NUM> is in an annular shape. The second magnet <NUM> is located in the annular shape. Similarly, to facilitate installation of the fourth magnet <NUM>, a radian of a surface of one side that is of the fourth magnet <NUM> and that is close to the second magnet <NUM> coincides with a radian of a surface of one side that is of the second magnet <NUM> and that is close to the fourth magnet <NUM>.

It should be noted that the cross section (the XOZ plane) of the fourth magnet <NUM> is parallel to the display surface A of the display module <NUM>.

The foregoing provides descriptions by using an example in which the first pole of the magnet is an N pole and the second pole is an S pole. In some other embodiments of this example, the first pole of the magnet may be an S pole, and the second pole may be an N pole.

Based on this, in order that the magnetization direction of the second magnet <NUM> is opposite to the magnetization direction of the first magnet <NUM>, for example, as shown in <FIG>, the first pole (for example, the S pole) of the first magnet <NUM> faces downwards, and the second pole (for example, the N pole) faces upwards. The first pole (for example, the S pole) of the second magnet <NUM> faces upwards, and the second pole (for example, the N pole) faces downwards. In addition, the magnetization direction of the third magnet <NUM> is perpendicular to the display surface A of the display module <NUM>. The second pole (for example, the N pole) of the third magnet <NUM> faces downwards, and therefore, can be close to the first pole (for example, the S pole) of the first magnet <NUM> and the first pole (for example, the S pole) of the second magnet <NUM>. In addition, the first pole (for example, the S pole) of the third magnet <NUM> faces upwards.

Similarly, when the first pole (for example, the S pole) of the first magnet <NUM>, the first pole (for example, the S pole) of the second magnet <NUM>, and the second pole (for example, the N pole) of the third magnet <NUM> are close to each other, as shown in <FIG>, a magnetic line of force (shown by small black arrows in the figure) goes from the first pole (for example, the S pole) of the second magnet <NUM> to the second pole (N pole) inside the second magnet <NUM>. In addition, the first pole (for example, the S pole) of the third magnet <NUM> is closer to the second pole (for example, the N pole) of the second magnet <NUM> than the first pole (for example, the S pole) of the second magnet <NUM> outside the second magnet <NUM>. Therefore, outside the second magnet <NUM>, after departing from the second pole (for example, the N pole) of the second magnet <NUM>, the magnetic line of force first enters the nearest second pole (for example, the S pole) of the third magnet <NUM>. Then, the magnetic line of force passes through the coil <NUM>, and then enters the first pole (for example, the S pole) of the second magnet <NUM>.

In addition, outside the first magnet <NUM>, a magnetic line of force departs from the second pole (for example, the N pole) of the first magnet <NUM>, and enters the first pole (for example, the S pole) of the third magnet <NUM>. The third magnet <NUM> and the coil <NUM> are disposed in parallel. Therefore, the magnetic line of force departs from the second pole (for example, the N pole) of the third magnet <NUM>, enters, under a magnetic conduction action of the magnetic conductive sheet <NUM> in a direction approximating to the horizontal direction X (parallel to the horizontal plane A of the display module <NUM>), the coil <NUM> from a surface that is of the coil <NUM> and that is close to the third magnet <NUM>, exits through the coil <NUM> from a surface that is of the coil <NUM> and that is close to the first magnet <NUM>, and enters the first pole (for example, the S pole) of the second magnet <NUM> through the magnetic conductive sheet <NUM>.

Therefore, the third magnet <NUM> located outside the coil <NUM> is added to the vibrator <NUM>, and the magnetization direction of the third magnet <NUM> is set, in other words, the first pole (for example, the S pole) of the first magnet <NUM>, the first pole (for example, the S pole) of the second magnet <NUM>, and the second pole (for example, the N pole) of the third magnet <NUM> are close to each other, to forcibly specify a path and a direction of a magnetic line of force in space in which a magnet is located. Therefore, as shown in <FIG>, the directions of most of the magnetic lines of force <NUM> entering the coil <NUM> approximate to the horizontal direction X. The driving force that is of the coil <NUM> and that is used to drive the display module <NUM> to vibrate in the vertical direction Y is increased, and the shear force between the coil <NUM> and the display module <NUM> is reduced.

This example is the same as Example <NUM>. As shown in <FIG>, at least a part of the vibrator <NUM> may be disposed in the accommodation cavity <NUM>. The vibrator <NUM> includes a first magnet <NUM>, a second magnet <NUM>, a coil <NUM>, and at least one third magnet <NUM>. The first magnet <NUM>, the coil <NUM>, and the third magnet <NUM> may be disposed in a first magnetic insulation cover <NUM>. The third magnet <NUM> is disposed in a second magnetic insulation cover <NUM>. In addition, the vibrator <NUM> may further include a fourth magnet <NUM> disposed in the second magnetic insulation cover <NUM>.

A difference between Example <NUM> and Example <NUM> lies in that, as shown in <FIG>, a magnetization direction of the third magnet <NUM> is parallel to the display surface A of the display module <NUM>.

For ease of description, in some embodiments of this application, the following provides descriptions by using a structure in <FIG> as an example and by using an example in which a first pole of a magnet is an N pole and a second pole is an S pole. Based on this, in order that a magnetization direction of the second magnet <NUM> is opposite to a magnetization direction of the first magnet <NUM>, a first pole (for example, an S pole) of the first magnet <NUM> faces downwards, and a second pole (for example, an N pole) faces upwards. A first pole (for example, an N pole) of the second magnet <NUM> faces upwards, and a second pole (for example, an S pole) faces downwards.

When the first pole (for example, the N pole) of the first magnet <NUM>, the first pole (for example, the N pole) of the second magnet <NUM>, and a second pole (for example, an S pole) of the third magnet <NUM> are close to each other, and the magnetization direction of the third magnet <NUM> is parallel to the display surface A of the display module <NUM>, as shown in <FIG>, a first pole (for example, an N pole) of the third magnet <NUM> is away from the first magnet <NUM>, and the second pole (for example, the S pole) of the third magnet <NUM> is close to the first magnet <NUM>.

Based on this, as shown in <FIG>, a magnetic line of force (shown by small black arrows in the figure) goes from the second pole (for example, the S pole) of the second magnet <NUM> to the first pole (the N pole) inside the second magnet <NUM>. In addition, the second pole (for example, the S pole) of the third magnet <NUM> is closer to the first pole (for example, the N pole) of the second magnet <NUM> than the second pole (for example, the S pole) of the second magnet <NUM> outside the second magnet <NUM>. Therefore, outside the second magnet <NUM>, after departing from the first pole (for example, the N pole) of the second magnet <NUM> and passing through the coil <NUM>, the magnetic line of force enters the nearest second pole (for example, the S pole) of the third magnet <NUM>, exits from the first pole (for example, the N pole) of the third magnet <NUM>, and enters the second pole (for example, the S pole) of the second magnet <NUM>.

In addition, inside the first magnet <NUM>, a magnetic line of force goes from the second pole (for example, the S pole) of the first magnet <NUM> to the first pole (N pole). It can be learned from the foregoing that the third magnet <NUM> is disposed on one side that is of the coil <NUM> and that is away from the first magnet <NUM>, the third magnet <NUM> and the coil <NUM> are disposed in parallel, and the magnetization direction of the third magnet <NUM> is a horizontal direction X (parallel to a horizontal plane A of the display module <NUM>). Therefore, outside the second magnet <NUM>, after departing from the first pole (for example, the N pole) of the second magnet <NUM>, the magnetic line of force enters, in a direction approximating to the horizontal direction X (parallel to the horizontal plane A of the display module <NUM>), the coil <NUM> from a surface that is of the coil <NUM> and that is close to the first magnet <NUM>, exits through the coil <NUM> from the surface that is of the coil <NUM> and that is close to the third magnet <NUM>, and enters the second pole (for example, the S pole) of the third magnet <NUM> that is horizontal to the coil <NUM>. Next, the magnetic line of force exits from the first pole (for example, the N pole) of the third magnet <NUM>, and enters the second pole (for example, the S pole) of the first magnet <NUM>.

Alternatively, in some other embodiments of this application, the vibrator <NUM> may further include a magnetic conductive sheet <NUM> shown in <FIG>. A disposing manner of the magnetic conductive sheet <NUM> is the same as that described above. As shown in <FIG>, a magnetic conduction direction of the magnetic conductive sheet <NUM> is the horizontal direction X (parallel to the horizontal plane A of the display module <NUM>). Therefore, under a magnetic conduction action of the magnetic conductive sheet <NUM>, after entering the magnetic conductive sheet <NUM>, each magnetic line of force (shown by small black arrows in the figure) departing from the first pole (for example, the N pole) of the first magnet <NUM> may basically enter the coil <NUM> in the horizontal direction X from a surface that is the coil <NUM> and that is close to the first magnet <NUM>, exit from a surface that is of the coil <NUM> and that is close to the third magnet <NUM>, and enter the second pole (for example, the S pole) of the third magnet <NUM> that is horizontal to the coil <NUM>. Next, the magnetic line of force exits from the first pole (for example, the N pole) of the third magnet <NUM>, and enters the second pole (for example, the S pole) of the first magnet <NUM>. Therefore, a quantity of magnetic lines in the horizontal direction in the coil <NUM> can be increased. A driving force that is of the coil <NUM> and that is used to drive the display module <NUM> to vibrate in a vertical direction Y is increased, and a shear force between the coil <NUM> and the display module <NUM> is reduced.

Based on this, in order that the magnetization direction of the second magnet <NUM> is opposite to the magnetization direction of the first magnet <NUM>, for example, as shown in <FIG>, the first pole (for example, the S pole) of the first magnet <NUM> faces downwards, and the second pole (for example, the N pole) faces upwards. The first pole (for example, the S pole) of the second magnet <NUM> faces upwards, and the second pole (for example, the N pole) faces downwards. In addition, the magnetization direction of the third magnet <NUM> is parallel to the display surface A of the display module <NUM>. As shown in <FIG>, the first pole (for example, the S pole) of the third magnet <NUM> is away from the first magnet <NUM>, and the second pole (for example, the N pole) of the third magnet <NUM> is close to the first magnet <NUM>.

Similarly, in this case, as shown in <FIG>, a magnetic line of force (shown by small black arrows in the figure) goes from the first pole (for example, the S pole) of the second magnet <NUM> to the second pole (N pole) inside the second magnet <NUM>. In addition, the first pole (for example, the S pole) of the third magnet <NUM> is closer to the second pole (for example, the N pole) of the second magnet <NUM> than the first pole (for example, the S pole) of the second magnet <NUM> outside the second magnet <NUM>. Therefore, outside the second magnet <NUM>, after departing from the second pole (for example, the N pole) of the second magnet <NUM>, the magnetic line of force first enters the nearest second pole (for example, the S pole) of the third magnet <NUM>. Then, the magnetic line of force passes through the coil <NUM>, and then enters the first pole (for example, the S pole) of the second magnet <NUM>.

A magnetic line of force goes from the first pole (for example, the S pole) of the third magnet <NUM> to the second pole (the N pole) in the horizontal direction X (parallel to the horizontal plane A of the display module <NUM>) inside the third magnet <NUM>. It can be learned from the foregoing that the third magnet <NUM> and the coil <NUM> are disposed in parallel. Therefore, outside the third magnet <NUM>, after departing from the second pole (for example, the N pole) of the third magnet <NUM>, the magnetic line of force enters, in a direction approximating to the horizontal direction X (parallel to the horizontal plane A of the display module <NUM>), the coil <NUM> from the surface that is of the coil <NUM> and that is close to the third magnet <NUM>, and exits through the coil <NUM> from the surface that is of the coil <NUM> and that is close to the first magnet <NUM>. Next, the magnetic line of force enters the first pole (for example, the S pole) of the first magnet <NUM>. Then, outside the first magnet <NUM>, the magnetic line of force exits from the second pole (for example, the N pole) of the first magnet <NUM>, and enters the first pole (for example, the S pole) of the third magnet <NUM>.

Similarly, a third magnet <NUM> located outside the coil <NUM> is added to the vibrator <NUM>, and the magnetization direction of the third magnet <NUM> is set, to forcibly specify a path and a direction of a magnetic line of force in space in which a magnet is located. Therefore, as shown in <FIG>, directions of most of magnetic lines of force <NUM> entering the coil <NUM> approximate to the horizontal direction X.

It should be noted that, in this example, a disposing manner of the fourth magnet <NUM> is the same as that described above. In addition, <FIG> is described by using an example in which the vibrator <NUM> does not include the magnetic conductive sheet <NUM>. In some other embodiments of this application, the vibrator <NUM> may further include a magnetic conductive sheet <NUM> located on one side that is of the first magnet <NUM> and that is close to the second magnet <NUM>. A magnetic conduction direction of the magnetic conductive sheet <NUM> is parallel to the horizontal plane A of the display module <NUM>. Therefore, under a magnetic conduction action of the magnetic conductive sheet <NUM>, a magnetic line of force starting from the second pole (for example, the N pole) of the third magnet <NUM> may enter the coil <NUM> from the surface that is of the coil <NUM> and that is close to the third magnet <NUM>, exist from the surface that is of the coil <NUM> and that is close to the first magnet <NUM>, pass through the magnetic conductive sheet <NUM>, and then enter the first pole (for example, the S pole) of the first magnet <NUM>.

For any one of the foregoing examples, as shown in <FIG>, the mobile terminal may further include a support sheet <NUM>. An upper surface of the support sheet <NUM> is connected to the display module <NUM>. A lower surface of the support sheet <NUM> is connected to the first magnetic insulation cover <NUM>. An area of the upper surface of the support sheet <NUM> is greater than an area of a surface of one side that is of the first magnetic insulation cover <NUM> and that is close to the support sheet <NUM>.

Therefore, a contact area between the support sheet <NUM> and the display module <NUM> is large because the support sheet <NUM> is of a sheet structure. Therefore, the upper surface and the lower surface of the support sheet <NUM> are respectively in contact with the display module <NUM> and the vibrator <NUM>, to increase a contact area between the vibrator <NUM> and the display module <NUM>, so that the driving force provided by the vibrator <NUM> to the display module <NUM> in a vibration process can be applied to the display module <NUM> more evenly. In addition, the support sheet <NUM> may be used to further enlarge an area of a deformation region of the display module <NUM>, increase efficiency of driving, by the vibrator <NUM>, the display module <NUM> to vibrate, reduce power consumption, and improve an effect of making a sound on screen.

It should be noted that a material constituting the support sheet <NUM> may be a metal material or another material having a hard texture.

The foregoing provides descriptions by using an example in which at least a part of the vibrator <NUM> is disposed in the accommodation cavity <NUM> between the middle frame <NUM> and the display module <NUM>. In some other embodiments of this application, as shown in <FIG>, when the gap H between the bearing plate <NUM> of the middle frame <NUM> and the rear face B of the display module <NUM> is large enough, the entire vibrator <NUM> may be disposed in the accommodation cavity <NUM>. A structure of the vibrator <NUM> is the same as that described above.

Claim 1:
A mobile terminal (<NUM>), comprising:
a middle frame (<NUM>);
a display module (<NUM>), connected to the middle frame (<NUM>), wherein an accommodation cavity (<NUM>) is formed between the display module and the middle frame (<NUM>); and
at least one vibrator (<NUM>), wherein at least a part of the vibrator (<NUM>) is disposed inside the accommodation cavity (<NUM>), and in a direction perpendicular to a display surface of the display module, the vibrator (<NUM>) is configured to drive the display module to vibrate upwards and downwards, wherein
the vibrator (<NUM>) comprises a first magnet (<NUM>), a second magnet (<NUM>), a coil (<NUM>), and at least one third magnet (<NUM>); and
the first magnet (<NUM>), the coil (<NUM>), and the third magnet (<NUM>) are all connected to a rear face of the display module, the first magnet (<NUM>) is located in a closed region enclosed by a conducting wire of the coil (<NUM>), the third magnet (<NUM>) is located on one side of the coil (<NUM>), said side facing away from the first magnet (<NUM>), the second magnet (<NUM>) is connected to the middle frame (<NUM>), a location of the second magnet (<NUM>) and a location of the first magnet (<NUM>) are disposed opposite each other, and a first pole of the first magnet (<NUM>) and a second pole of the third magnet (<NUM>) are facing towards a first pole of the second magnet (<NUM>), so that at least some magnetic lines of force pass through the coil (<NUM>) from a first surface of the coil (<NUM>) and a second surface of the coil, wherein the first surface is a radian of an inner surface of the coil opposite to the first magnet (<NUM>) and the second surface is a radian of an outer surface of the coil opposite to the third magnet (<NUM>),
wherein the first pole of the first magnet (<NUM>) and the first pole of the second magnet (<NUM>) have the same polarity, and the first pole of the first magnet (<NUM>) and the second pole of the third magnet (<NUM>) have opposite polarities.