WO2021047300A1 - 一种显示终端 - Google Patents

一种显示终端 Download PDF

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Publication number
WO2021047300A1
WO2021047300A1 PCT/CN2020/103865 CN2020103865W WO2021047300A1 WO 2021047300 A1 WO2021047300 A1 WO 2021047300A1 CN 2020103865 W CN2020103865 W CN 2020103865W WO 2021047300 A1 WO2021047300 A1 WO 2021047300A1
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WO
WIPO (PCT)
Prior art keywords
vibrating plate
vibrator
display module
power amplifier
display
Prior art date
Application number
PCT/CN2020/103865
Other languages
English (en)
French (fr)
Inventor
李英明
陈森俊
叶千峰
秦仁轩
许超
涂海生
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20862635.8A priority Critical patent/EP4020945A4/en
Priority to US17/642,001 priority patent/US20240049505A1/en
Publication of WO2021047300A1 publication Critical patent/WO2021047300A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/1201—Manufacture or treatment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133325—Assembling processes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133769—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers comprising an active, e.g. switchable, alignment layer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/62—Constructional arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/751—Integrated devices having a three-dimensional layout, e.g. 3D ICs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/82—Interconnections, e.g. terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/05—Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Definitions

  • This application relates to the field of display technology, and in particular to a display terminal.
  • the embodiment of the present application provides a display terminal, which is used to solve the problem that the handset provided on the display terminal reduces the screen-to-body ratio of the whole device.
  • a display terminal in one aspect of the embodiments of the present application, includes a middle frame, a display module, a vibrator and at least one vibrating plate.
  • the display module is connected with the middle frame, and an accommodation space is formed between the display module and the middle frame. At least a part of the vibrator is arranged in the accommodating space.
  • the vibrator is connected with the display module or with the middle frame.
  • the vibrating plate is located in the accommodating space.
  • the upper surface of the vibrating plate is connected with the lower surface of the display module.
  • the lower surface of the vibrating plate faces the middle frame. In the direction perpendicular to the upper surface of the vibrating plate, the vibrator and the vibrating plate are used to drive the display module to vibrate up and down.
  • the vibration phase of the vibrating plate and the vibrator can be made the same, so that the vibration of the vibrating plate and the vibrator can be superimposed and coupled to the display module, so as to increase the amplitude of the display module as the diaphragm during the vibration process. Displays the volume of high-frequency sounds emitted by the terminal.
  • the display terminal further includes a first supporting piece.
  • the first supporting plate is located between the vibrating plate and the display module.
  • the upper surface of the first support sheet is connected with the lower surface of the display module, and the lower surface of the first support sheet is connected with the upper surface of the vibrating sheet.
  • the area of the upper surface of the first supporting piece is larger than the area of the upper surface of the vibrating piece.
  • the contact area between the vibrating sheet and the display module can be increased, so that the vibrating sheet and the vibrator are
  • the driving force provided by the module can be applied to the display module more evenly. Reduce the probability of damage to the display module during vibration.
  • the area of the deformation area of the display module can be enlarged, so that the driving force provided to the display module can be more transmitted to the display module during the vibration of the vibrating plate and the vibrator.
  • the vibrating plate is located between the vibrator and the display module, and the lower surface of the vibrating plate is connected with the upper surface of the vibrator.
  • the lower surface of the vibrator is connected with the middle frame.
  • the area of the upper surface of the vibrating plate is larger than the area of the upper surface of the vibrator.
  • the contact area between its upper surface and the display module is relatively large. Therefore, by contacting the upper and lower surfaces of the vibrating plate with the display module and the vibrator respectively, the contact area between the vibrator and the display module can be increased, so that the driving force provided to the display module during the vibrating process of the vibrator It can be applied to the display module more evenly. Reduce the probability of damage to the display module during vibration.
  • the area of the deformation area of the display module can also be enlarged, so that the driving force provided to the display module can be more transmitted to the display module during the vibrating process of the vibrator.
  • the efficiency of the vibrator to drive the display module vibration is increased, the power consumption is reduced, and the sound effect of the screen is improved.
  • the display terminal further includes at least one first mass.
  • the first mass is arranged on the lower surface of the vibrating plate.
  • the area where the vibrator is projected vertically on the lower surface of the vibrating plate does not overlap with the area where the first mass is projected vertically on the lower surface of the vibrating plate.
  • the first mass can generate a vibration acceleration, which is coupled to the display module through the vibrating plate, thereby increasing the driving force provided by the coupling of the vibrating plate to the display module and improving the screen sound The purpose of the volume.
  • the upper surface of the vibrator is connected with the lower surface of the display module, and the lower surface of the vibrator is connected with the middle frame.
  • the vertical projection area of the vibrator on the lower surface of the display module does not overlap with the vertical projection area of the vibrating plate on the lower surface of the display module. In this way, by arranging the vibrating plate on the periphery of the vibrator, the gap between the display module and the middle frame can be reduced, so as to achieve the purpose of reducing the thickness of the display terminal.
  • the display terminal further includes a second supporting piece.
  • the second support sheet is located between the vibrator and the display module, the upper surface of the second support sheet is connected with the lower surface of the display module, and the lower surface of the second support sheet is connected with the upper surface of the vibrator.
  • the area of the upper surface of the second support piece is larger than the area of the upper surface of the vibrator.
  • the force can be applied to the display module more evenly. Reduce the probability of damage to the display module during vibration.
  • the area of the deformation area of the display module can be enlarged, so that the driving force provided to the display module can be more transmitted to the display module during the vibrator vibration. Thereby, the efficiency of the vibrator to drive the display module vibration is increased, the power consumption is reduced, and the sound effect of the screen is improved.
  • the display terminal further includes at least one second mass.
  • the second mass is arranged on the lower surface of the second supporting piece.
  • the area where the vibrator is projected vertically on the lower surface of the second support piece does not overlap with the area where the second mass is projected vertically on the lower surface of the second support piece.
  • the setting mode and technical effect of the second mass block are the same as the setting mode of the first mass block, and will not be repeated here.
  • the display terminal further includes at least one third mass.
  • the third mass is located on the lower surface of the vibrating plate.
  • the setting mode and technical effect of the third mass block are the same as the setting mode of the first mass block, and will not be repeated here.
  • the display terminal further includes a first adhesive layer on the upper surface of the vibrating plate.
  • the first adhesive layer is arranged along the edge of the upper surface of the vibrating plate. Therefore, the shape and arrangement of the first adhesive layer can be set according to the deformation form and degree of the vibration plate, so that the arrangement of the first adhesive layer is more conducive to driving the display module to vibrate.
  • the thickness of the vibrating plate is 0.2mm-2mm.
  • the thickness of the vibrating plate is in the range of 0.2mm to 2mm, it can ensure that the vibrating plate has a certain driving ability under the condition that vibration is prone to occur, and the thickness of the vibrating plate can be reduced to the overall thickness of the display terminal. influences.
  • an adhesive layer is provided between the display module and the middle frame.
  • the thickness of the adhesive layer is 0.2mm to 0.5mm. In this way, the adhesive layer can firmly bond the display module and the middle frame together.
  • the greater the thickness of the adhesive layer the softer the adhesive layer is, and the display module It is easier to vibrate after being stressed, which helps to increase the volume of the screen sound.
  • the Young's modulus of the adhesive layer may be 10Mpa to 80Mpa. At this time, the smaller the Young's modulus of the adhesive layer, the softer the boundary conditions of the display terminal, and the easier the display module is to vibrate, which can effectively increase the sound produced by the screen.
  • the vibrator includes a first magnet and a second magnet; the first magnet is connected to the display module, and the second magnet is connected to the middle frame.
  • the first magnet is connected to the surface of the display module facing the middle frame, and the second magnet can pass through the mounting hole and be fixed to the second surface of the middle frame through a bracket.
  • the space occupied by the vibrator in the accommodating space can be reduced, so as to reduce the gap between the display module and the middle frame, so as to reduce the thickness of the display terminal. the goal of.
  • the display terminal includes an audio digital processor, a first power amplifier, and a filter.
  • the output terminal of the audio digital processor is coupled with the input terminal of the first power amplifier.
  • the audio digital processor is used to output audio signals to the first power amplifier.
  • the first output end of the first power amplifier is coupled to the filter, and the second output end of the first power amplifier is coupled to the vibrator; the first power amplifier is used to amplify the audio signal so that the vibration phase of the vibrator is The first phase.
  • the output end of the filter is connected with the vibrating plate, and the filter is used for filtering the audio signal so that the vibration phase of the vibrating plate is the first phase.
  • the first power amplifier When the CPU outputs a low-frequency signal, after the low-frequency signal passes through the audio digital processor and the first power amplifier, the first power amplifier outputs an audio signal of several hundred KHz to be applied to the vibrator to drive the vibrator to vibrate.
  • the vibrator acts as an inductor to filter out part of the audio signal of several hundred KHz, and vibrates under the action of the remaining low frequency signal.
  • the first power amplifier outputs audio signals of several hundred KHz and passes through the filter, a part of the audio signals of the audio signals of several hundred KHz is filtered out, and the remaining low frequency signals are applied to the vibrating plate. Since the vibrator and the vibrating plate are connected in parallel, the voltage applied to the vibrator and the vibrating plate is the same.
  • the impedance of the coil in the vibrator is small, so the current flowing through the coil is relatively large.
  • the impedance of the vibrating plate as a capacitor is large, and the current flowing through the vibrating plate is small.
  • the vibrator and the vibrating plate vibrate at the same time, since the vibration phase is the same, the vibration of the vibrator and the vibrating plate can be superimposed, and the vibrator serves as the main driving source to drive the display module to vibrate to send out low-frequency signals.
  • the CPU outputs a high-frequency signal
  • the impedance of the coil in the vibrator is large, so the current flowing through the coil is small.
  • the impedance of the vibrating plate as a capacitor is small, and the current flowing through the vibrating plate is relatively large.
  • the vibrating plate can be used as the main driving source to drive the display module to vibrate to send out high-frequency signals, so as to solve the problem of high-frequency signals from the screen.
  • the problem of low volume is the reason for solving the problem of high-frequency signals from the screen.
  • the display terminal includes an audio digital processor, a first power amplifier, and a second power amplifier.
  • the output frequency of the first power amplifier is greater than the output frequency of the second power amplifier.
  • the output terminal of the audio digital processor is coupled with the input terminal of the first power amplifier and the second power amplifier.
  • the audio digital processor is used to output audio signals to the first power amplifier and the second power amplifier.
  • the output terminal of the first power amplifier is coupled to the vibrator.
  • the first power amplifier is used for amplifying the audio signal so that the vibration phase of the vibrator is the first phase.
  • the output end of the second power amplifier is coupled to the vibrating plate, and the second power amplifier is used for amplifying the audio signal so that the vibration phase of the vibrating plate is the first phase.
  • the vibrator is driven by the first power amplifier to vibrate, and when the screen is driven to emit a low-frequency signal, it is used as the main driving source to drive the display module to vibrate.
  • the vibrating plate is driven by the second power amplifier to vibrate, and when the screen is driven to send out a high frequency signal, it acts as the main driving source to drive the display module to vibrate.
  • FIG. 1 is a schematic structural diagram of a display terminal provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of a structure of the display module in FIG. 1;
  • FIG. 3 is a schematic diagram of another structure of the display module in FIG. 1;
  • 4a is a schematic diagram of the connection structure between the display module and the middle frame provided by an embodiment of the application;
  • 4b is a schematic diagram of the connection structure of the display module, the middle frame, and the housing provided by an embodiment of the application;
  • FIG. 5a is a schematic structural diagram of another display terminal provided by an embodiment of this application.
  • Fig. 5b is a schematic diagram of a specific structure of the vibrator in Fig. 5a;
  • FIG. 6a is a schematic structural diagram of another display terminal provided by an embodiment of this application.
  • Fig. 6b is a schematic diagram of a structure of the first adhesive layer in Fig. 6a;
  • FIG. 6c is a schematic diagram of another structure of the first adhesive layer in FIG. 6a;
  • FIG. 6d is a schematic diagram of another structure of the first adhesive layer in FIG. 6a;
  • FIG. 6e is a schematic diagram of another structure of the first adhesive layer in FIG. 6a;
  • FIG. 7a is a schematic structural diagram of another display terminal provided by an embodiment of this application.
  • Fig. 7b is a schematic diagram of an arrangement of the first mass block in Fig. 7a;
  • Fig. 7c is a schematic diagram of another setting method of the first mass block in Fig. 7a;
  • Fig. 7d is a schematic diagram of another setting method of the first mass block in Fig. 7a;
  • FIG. 8a is a schematic structural diagram of another display terminal provided by an embodiment of this application.
  • FIG. 8b is a schematic structural diagram of another display terminal provided by an embodiment of this application.
  • FIG. 9a is a schematic structural diagram of another display terminal provided by an embodiment of this application.
  • Fig. 9b is a schematic diagram of a structure of the vibrating plate in Fig. 9a;
  • FIG. 9c is a schematic diagram of another structure of the vibrating plate in FIG. 9a;
  • FIG. 9d is a schematic structural diagram of another display terminal provided by an embodiment of this application.
  • FIG. 9e is a schematic structural diagram of another display terminal provided by an embodiment of this application.
  • Fig. 9f is a schematic diagram of a setting method of the third mass block in Fig. 9e;
  • FIG. 10 is a schematic diagram of a circuit structure for driving a vibrator and a vibrating plate to vibrate according to an embodiment of the application;
  • FIG. 11a is a schematic diagram of another circuit structure for driving a vibrator and a vibrating plate to vibrate according to an embodiment of the application;
  • Fig. 11b is a schematic diagram of another circuit structure for driving a vibrator and a vibrating plate to vibrate according to an embodiment of the application;
  • Fig. 11c is a schematic diagram of another circuit structure for driving a vibrator and a vibrating plate to vibrate according to an embodiment of the application;
  • FIG. 11d is a schematic diagram of another circuit structure for driving a vibrator and a vibrating plate to vibrate according to an embodiment of the application.
  • azimuth terms such as “upper”, “lower”, “left”, “right”, etc. may include but are not limited to the directions defined relative to the schematic placement of the components in the drawings. It should be understood that these directions sexual terms can be relative concepts, and they are used for relative description and clarification, and they can change correspondingly according to the changes in the orientation of the parts in the drawings.
  • connection should be understood in a broad sense.
  • “connected” can be a fixed connection, a detachable connection, or a whole; it can be a direct connection, or It can be connected indirectly through an intermediary.
  • the term “coupling” may be an electrical connection method for signal transmission.
  • the embodiment of the present application provides a display terminal.
  • the display terminal includes, for example, a mobile phone, a tablet computer, a personal digital assistant (PDA), a vehicle-mounted computer, and the like.
  • PDA personal digital assistant
  • the embodiments of the present application do not impose special restrictions on the specific form of the above-mentioned display terminal. For the convenience of description, the following is an example in which the display terminal is a mobile phone as shown in FIG. 1.
  • the above-mentioned display terminal 01 mainly includes but is not limited to a display module 10.
  • the above-mentioned display screen 101 may be a liquid crystal display (LCD) screen.
  • the display module 10 further includes a backlight unit (BLU) 102 for providing a light source to the LCD.
  • BLU backlight unit
  • the above-mentioned display screen 101 may be an organic light emitting diode (organic light emitting diode, OLED) display screen, and the OLED display screen can realize self-luminescence, so the display module There is no need to set the above-mentioned BLU in group 10.
  • OLED organic light emitting diode
  • the base substrate in the above-mentioned OLED display screen may be made of a flexible resin material.
  • the OLED display screen is a flexible display screen, so that the mobile phone with the above-mentioned OLED display screen can be a folding mobile phone.
  • the base substrate in the above-mentioned OLED display screen may also be made of a material with a relatively hard texture, such as glass.
  • the aforementioned OLED display is a hard display.
  • the above-mentioned display module 10 further includes a cover 103 located on the display side of the display screen 101, such as cover glass (CG).
  • the cover glass has certain toughness.
  • the above-mentioned display terminal 01 also includes a middle frame 11 as shown in FIG. 1.
  • the display module 10 is installed on the middle frame 11.
  • the middle frame 11 is provided with a ring of carrying platforms 110 on the side close to the display module 10.
  • An adhesive layer 111 is pasted on the carrier 110.
  • the display module 10 is fixed to the middle frame 11 through the adhesive layer 111, so that the display module 10 is connected to the middle frame 11, so as to achieve the purpose of mounting the display module 10 on the middle frame 11.
  • the adhesive layer 111 may be foam glue.
  • the foam glue has certain elasticity and can be deformed under the action of external force.
  • the display terminal 01 also includes a middle frame 11 as shown in FIG. 1.
  • the surface of the middle frame 11 facing away from the display module 10 (the second surface B2 in FIG. 4a) is used to mount internal components such as batteries, printed circuit boards (PCB), cameras (Camera), and antennas.
  • PCB printed circuit boards
  • Camera Camera
  • antennas As shown in Figure 1, a central processing unit (CPU) can be provided on the PCB.
  • the above-mentioned display terminal 01 may further include a housing 12 as shown in FIG. 1.
  • the housing 12 is arranged on the side shown on the second surface B2 of the middle frame 11, and can be connected to the middle frame 11 through an adhesive layer 111.
  • the housing 12 can protect the above-mentioned internal components installed on the middle frame 11.
  • the lower surface A2 of the display module 10 (that is, the side surface of the display module 10 facing the middle frame 11) fixed on the carrier 110, and the first surface B1 of the middle frame 11 There is a gap H between.
  • the display module 10 and the middle frame 11 form an accommodating space 20 through a gap H.
  • the middle frame 11 includes a carrying portion 112 for carrying the battery and the PCB, and a frame 113 provided around the carrying portion 112.
  • the carrying portion 112 is parallel or approximately parallel to the display module 10.
  • the direction toward the middle frame 11 may be the bearing portion, which faces the bearing portion 112 of the middle frame 11.
  • the display terminal 01 further includes a vibrator 31 as shown in FIG. 5a. At least a part of the vibrator 31 is provided in the accommodation space 20.
  • the vibrator 31 is connected to the display module 10 or the middle frame 11.
  • the vibrator 31 is used to output a drive signal according to an audio digital signal processing (DSP) 300 as shown in FIG. 1, along a vertical line A1 of the upper surface of the display module 10 (that is, the display of the display module 10).
  • DSP audio digital signal processing
  • the display module 10 is driven to vibrate in the direction of the surface) (as shown in FIG. 5a). In this way, under the driving of the vibrator 31, the display module 10 acts as a diaphragm to push the air to generate sound during the vibration process, so as to realize the screen sound.
  • the fact that at least a part of the vibrator 31 is disposed in the accommodation space 20 means that in some embodiments of the present application, the entire vibrator 31 may be disposed in the accommodation space 20 described above.
  • the vibrator 31 may be a linear vibrator.
  • a mounting hole 122 may be provided on the middle frame 11, and a part of the vibrator 31 passes through the mounting hole 122 and is connected to the second part of the middle frame 11.
  • the two surfaces B2 are connected.
  • the above-mentioned vibrator 31 may include a first magnet 311 and a second magnet 312 that move relatively in a working state.
  • the first magnet 311 is connected to the surface of the display module 10 facing the middle frame 11, and the second magnet 312 can pass through the mounting hole 122 and be fixed to the second surface B2 of the middle frame by a bracket 123.
  • the space occupied by the vibrator 31 in the accommodating space 20 can be reduced, so as to reduce the gap H between the display module 10 and the middle frame 11. , To achieve the purpose of reducing the thickness of the display terminal 01.
  • the above-mentioned first magnet 311 may be a coil
  • the second magnet 312 may be a magnet
  • the first magnet 311 is a magnet
  • the second magnet 312 is a coil.
  • the coil receives the driving signal output by the audio digital processor 300
  • an alternating magnetic field will be generated.
  • the strength of the magnetic field is proportional to the current in the coil.
  • the magnet can generate a constant magnetic field with the same size and direction.
  • the coil can be made to vibrate up and down on the magnetic induction line in a direction perpendicular to the lower surface A1 of the display module 10 (as shown in FIG. 5a).
  • the purpose of driving the display module 10 to vibrate is achieved.
  • the inductance of the above-mentioned coil will also be higher.
  • the audio digital processor 300 outputs the maximum voltage, since the impedance of the coil increases, the current on the coil will decrease. It can be seen from the above that the strength of the magnetic field generated by the coil is proportional to the size of the current in the coil, so the strength of the magnetic field generated by the coil will also decrease. As a result, the power of the high-frequency sound is low during the screen sounding process, so that the volume of the high-frequency sound emitted by the display terminal 01 is low.
  • the display terminal 01 further includes at least one vibrating plate 32 as shown in FIG. 5a.
  • the vibrating piece 32 is located in the accommodating space 20.
  • the upper surface of the vibrating plate 32 (that is, the surface of the vibrating plate 32 facing the display module 10) is connected to the lower surface A2 of the display module 10, and the lower surface of the vibrating plate 32 (opposite to the upper surface of the vibrating plate 32) Set) toward the middle frame 11.
  • the vibrating plate 32 is used to drive the display module 10 to vibrate up and down in a direction perpendicular to the upper surface of the vibrating plate 32 (or the upper surface A1 of the display module 10) after receiving the driving signal output by the audio digital processor 300 .
  • the vibration phase of the vibrating plate 32 and the vibrator 31 can be made the same, so that the vibration of the vibrating plate 32 and the vibrator 31 can be superimposed and coupled to the display module 10 to improve the vibration process of the display module 10 as a diaphragm. Increase the volume of the high-frequency sound emitted by the display terminal 01.
  • the vibrating plate 32, the display module 10, and the first magnet 311 in the vibrator 31 can constitute the sound system of the display terminal 01.
  • the display module 10 acts as a diaphragm, vibrates under the common drive of the vibrator 31 and the vibrating plate 32, and in the vibration process, pushes the air to produce sound to achieve the purpose of sound on the screen.
  • the above-mentioned sound system can realize the function of an earpiece or a speaker to play the audio signal.
  • the display screen 101 in the display module 10 may be an LCD screen or an OLED display screen.
  • OLED displays can self-illuminate. Therefore, there is no need to provide a BLU in the display module 10, so the thickness of the display module 10 is thin. When it is used as a diaphragm to realize screen sound, it is more likely to be deformed, so that the sound effect of the diaphragm is better.
  • the vibrator 31 and the vibrating plate 32 may be stacked.
  • the vibrating plate 32 is located between the vibrator 31 and the display module 10.
  • the lower surface of the vibrating plate 32 (that is, the surface of the vibrating plate 32 facing the middle frame 11) is connected to the upper surface of the vibrator 31 (that is, the surface of the vibrator 31 facing the display module 10).
  • the upper surface of the vibrating plate 32 is connected to the lower surface A2 of the display module 10.
  • the vibrator 31 can be connected to the display module 10 through the vibrating plate 32.
  • the vibrator 31 can be superimposed with the vibration of the vibrating plate 32 during the vibration process and coupled to the display module 10, so as to increase the vibration amplitude of the display module 10 and achieve the purpose of increasing the volume of sound emitted by the screen.
  • the vibrating sheet 32 may include a layer of electrostrictive sheet, or a plurality of stacked electrostrictive sheets.
  • Each electrostrictive sheet includes an upper electrode layer, a lower electrode layer composed of a metal material, and an electrostrictive dielectric layer, such as a piezoelectric ceramic dielectric layer, located between the upper electrode layer and the lower electrode layer.
  • the electrostrictive medium layer can be elastically deformed under the action of the electric field generated by the upper electrode layer and the lower electrode layer. Therefore, during the deformation process of the electrostrictive medium layer, the display module 10 is driven to vibrate in a direction perpendicular to the upper surface A1 of the display module 10 (as shown in FIG. 5a). In this case, by controlling parameters such as the size and direction of the electric field, the deformation form of the electrostrictive medium layer can be controlled, and the purpose of controlling the vibration frequency of the display module 10 can be achieved.
  • the vibrating plate 32 may include a layer of magnetostrictive material. Based on this, a conductive coil can be provided outside the magnetostrictive material layer. The layer of magnetostrictive material can be elastically deformed under the action of the external magnetic field generated by the energization of the conductive coil. Thus, during the deformation process of the magnetostrictive material layer, the display module 10 is driven to vibrate in a direction perpendicular to the lower surface A2 of the display module 10 (as shown in FIG. 5a).
  • the vibrating piece 32 including at least one piezoelectric ceramic layer As an example, the following descriptions are made by taking the vibrating piece 32 including at least one piezoelectric ceramic layer as an example.
  • the display terminal 01 includes a first adhesive layer 321a on the upper surface C1 of the vibrating plate 32.
  • the vibrating plate 32 is connected to the lower surface A2 of the display module 10 through the first adhesive layer 321a.
  • the above-mentioned first adhesive layer 321a may cover the entire upper surface C1 of the vibrating plate 32 and an entire film layer with adhesive properties.
  • the above-mentioned first adhesive layer 321a may also have a certain adhesive layer pattern.
  • the adhesive layer pattern of the first adhesive layer 321a is arranged around the edge of the upper surface C1 of the vibrating plate 32.
  • the first adhesive layer 321a may be arranged in a circle around the edge of the upper surface C1 of the vibrating plate 32 to form a film layer of a frame structure connected end to end.
  • the adhesive layer pattern of the first adhesive layer 321a is a plurality of block-shaped film layers arranged in a circle around the edge of the upper surface C1 of the vibrating plate 32.
  • the adhesive layer pattern of the first adhesive layer 321a includes the left (close to the frame 113 on the left side of the middle frame 11) and the right (close to the display terminal 01) on the upper surface C1 of the vibrating plate 32. 113) on the right side of the frame are two strip-shaped film layers.
  • the adhesive layer pattern of the first adhesive layer 321a includes the adhesive layer pattern provided on the upper surface C1 of the vibrating plate 32 (close to the frame 113 on the upper side of the display terminal 01), and lower (close to the display terminal 01).
  • the above-mentioned first adhesive layer 321a may be glue with a relatively strong bonding strength, such as a two-component glue.
  • the first adhesive layer 321a may be a back adhesive (ie, double Surface glue).
  • the lower surface C2 of the vibrating plate 32 is connected to the vibrator 31 through the second adhesive layer 321b.
  • the purpose of the second adhesive layer 321 b is to connect the vibrator 31 and the vibrating plate 32 while transmitting the vibration of the vibrator 31 to the vibrating plate 32, and then to the display module 10 through the vibrating plate 32.
  • the second adhesive layer 321b may be a film layer with adhesive properties covering the entire surface of the vibrator 31 facing the vibrating plate 32.
  • the second glue layer 321b may be the glue with higher bonding strength as described above.
  • the area of the upper surface C1 of the vibrating plate 32 is larger than the area of the upper surface of the vibrator 31 (that is, the surface where the vibrator 31 and the vibrating plate 32 are in contact).
  • a part of the vibrating plate 32 is connected to the vibrator 31 through the second adhesive layer 321 b, and the other part extends out of the vibrator 31 and is located at the periphery of the vibrator 31.
  • the vibrating plate 32 since the vibrating plate 32 has a sheet-like structure, the contact area between the upper surface C1 and the display module 10 is relatively large. Therefore, by contacting the upper surface C1 and the lower surface C2 of the vibrating plate 32 with the display module 10 and the vibrator 31 respectively, the contact area between the vibrator 31 and the display module 10 can be increased, so that during the vibration of the vibrator 31, The driving force provided to the display module 10 can be applied to the display module 10 more evenly. The probability of damage to the display module 10 during the vibration process is reduced.
  • the area of the deformation area of the display module 10 can also be enlarged, so that during the vibrating process of the vibrator 31, the driving force provided to the display module 10 can be more transmitted to the display. Module 10. Thereby, the efficiency of the vibrator 31 to drive the display module 10 to vibrate is increased, power consumption is reduced, and the sound effect of the screen is improved.
  • the hardness of the vibrating element 32 is related to the thickness S of the vibrating element 32.
  • the thickness S of the aforementioned vibrating plate 32 may be 0.2 mm-2 mm.
  • the thickness S of the vibrating plate 32 is less than 0.2 mm, the thickness S of the vibrating plate 32 is too thin and the hardness is low.
  • the audio digital processor 300 shown in FIG. 1 outputs a driving signal
  • the vibrating plate 32 displays The driving force provided by the module 10 is relatively small.
  • the vibrating plate 32 can withstand the output voltage of the audio digital processor 300 is relatively small. At this time, the driving ability of the vibrating piece 32 is small.
  • the thickness S of the vibrating plate 32 is 2 mm
  • the thickness S of the vibrating plate 32 is too large and the hardness is relatively high, which is not conducive to the vibration of the vibrating plate 32 under the action of the driving signal.
  • the thickness S of the vibrating plate 32 is too large, the overall thickness of the display terminal 01 will be affected.
  • the thickness S of the vibrating plate 32 when the thickness S of the vibrating plate 32 is in the range of 0.2 mm to 2 mm, it can ensure that the vibrating plate 32 has a certain driving ability under the condition that vibration is prone to occur, and the size of the vibrating plate 32 can be reduced.
  • the thickness S affects the overall thickness of the display terminal 01.
  • the thickness S of the vibrating plate 32 may be 0.2mm, 0.3mm, 0.5mm, 0.8mm, 1mm, 1.5mm, 1.8mm, 2mm.
  • the hardness of the vibrating element 32 is also related to the Young's modulus of the vibrating element 32.
  • the Young's modulus of the vibrating piece 32 can be reduced.
  • the Young's modulus of the vibrating plate 32 can be increased.
  • the display module 10 further includes a lower surface C2 located on the vibrating plate 32 (as shown in FIG. 6a). At least one of the above) is the first mass block 322 shown in FIG. 7a.
  • the area where the vibrator 31 is vertically projected on the lower surface C2 of the vibrating plate 32 does not overlap with the area where the first mass 322 is projected vertically on the lower surface C2 of the vibrating plate 32.
  • the first mass 322 may be located on the periphery of the vibrator 31 with a first gap L1 between it and the vibrator 31.
  • the present application does not limit the size of the first gap L1, as long as it can be ensured that the first mass 322 and the vibrator 31 will not come into contact with the vibrator 31 during the vibration of the vibrator 31 to affect the vibration of the vibrator 31.
  • the vibrating plate 32 may include four first masses 322. Each first mass 322 is located at a corner of the lower surface C2.
  • the vibrating plate 32 may include a plurality of (for example, more than four) first masses 322.
  • a plurality of first masses 322 are arranged in a circle around the edge of the lower surface C2.
  • the vibrating plate 32 includes a plurality of first masses 322, in some embodiments of the present application, according to the deformation form and degree of deformation of the vibrating plate 32, the first masses 322 with different positions can be Parameters such as material, thickness and quality are set.
  • the material, thickness, or mass of the first mass block 322 at different positions of the amplitude may be different.
  • the material, thickness or quality of the first mass block 322 at the position with the same or similar amplitude may be the same.
  • Those skilled in the art can set the above-mentioned parameters of the first masses 322 according to the deformation form and degree of the vibration plate 32, and combine the force analysis to obtain a setting method that is more conducive to driving the display module 10 to vibrate. .
  • the vibrating plate 32 may include a first mass 322.
  • the first mass 322 is a frame structure arranged in a circle around the periphery of the vibrator 31 and connected end to end.
  • the material constituting the above-mentioned first mass block 322 may be a simple metal material or a metal alloy material.
  • the first mass 322 since the first mass 322 is disposed on the part where the vibrating plate 32 extends from the vibrator 31, the first mass 322 can generate a vibration acceleration during the deformation of the vibrating plate 32.
  • the acceleration is coupled to the display module 10 through the vibrating plate 32, so that the driving force provided by the coupling of the vibrating plate 32 to the display module 10 can be improved, and the purpose of increasing the amount of sound produced by the screen can be achieved.
  • a first mass 322 is provided on the lower surface C2 of the vibrating plate 32.
  • the vibrating plate 32 is located between the vibrator 31 and the display module 10, and the lower surface of the vibrating plate 32 is connected with the upper surface of the vibrator 31.
  • the upper surface of the vibrating plate 32 is connected to the lower surface A2 of the display module 10.
  • the setting method of the first mass block 322 is the same as described above, and will not be repeated here.
  • the difference between this example and the first example is that the above-mentioned display module 10 further includes a first supporting sheet 323.
  • the first supporting sheet 323 is located between the vibrating sheet 32 and the display module 10.
  • the lower surface of the first supporting piece (that is, the surface of the first supporting piece 323 facing the side of the middle frame 11) is connected to the upper surface of the vibrating piece 32.
  • the lower surface of the first support plate 323 is connected to the upper surface C1 of the vibrating plate 32 through the first adhesive layer 321a.
  • the arrangement of the first adhesive layer 321a is the same as described above, and will not be repeated here.
  • the upper surface of the first supporting sheet 323 (that is, the surface of the first supporting sheet 323 facing the display module 10) is connected to the lower surface A2 of the display module 10.
  • the first supporting sheet 323 may be connected to the lower surface A2 of the display module 10 through the third adhesive layer 321c.
  • the material of the third adhesive layer 321c and the material of the first adhesive layer 321a can be arranged in the same manner, which will not be repeated here.
  • the area of the upper surface of the first supporting sheet 323 (that is, the surface of the first supporting sheet 323 in contact with the display module 10) is larger than the area of the upper surface of the vibrating sheet 32.
  • the first supporting sheet 323 since the first supporting sheet 323 has a sheet-like structure, its contact area with the display module 10 is relatively large. Therefore, by contacting the upper and lower surfaces of the first support plate 323 with the display module 10 and the vibrating plate 32, respectively, the contact area between the vibrating plate 32 and the display module 10 can be increased, so that the vibrating plate 32 and the vibrator 31 During the vibration process, the driving force provided to the display module 10 can be applied to the display module 10 more evenly. The probability of damage to the display module 10 during the vibration process is reduced.
  • the area of the deformation area of the display module 10 can also be enlarged, so that during the vibration of the vibrating plate 32 and the vibrator 31, the driving force provided to the display module 10 can be more transmitted to the display module. Group 10. Therefore, the efficiency of the vibrating plate 32 and the vibrator 31 to drive the display module 10 to vibrate is increased, power consumption is reduced, and the effect of screen sound is improved.
  • the vibrating plate 32 in the vibrating plate 32 is located between the vibrator 31 and the display module 10 and is connected to the vibrator 31 and the display module 10.
  • the vibrating structure composed of the vibrating plate 32 and the vibrator 31 can be arranged at the center of the accommodating space 20 (as shown in FIG. 4a), that is, the vibrating structure composed of the vibrating plate 32 and the vibrator 31 and the display module 10 Connected to the center position.
  • the driving force can directly act on the center position of the display module 10 as the diaphragm, so that the amplitude of the entire display module 10 can be increased.
  • the display module 10 is used as a speaker, and in the process of realizing screen sound, both low-frequency sound signals and high-frequency sound signals can be transmitted with louder sound.
  • a first supporting sheet 323 is further provided between the vibrating sheet 32 and the display module 10.
  • the sum of the thickness of the vibrating plate 32 and the thickness of the first supporting plate 323 may be 0.2 mm. ⁇ 2mm range.
  • the Young's modulus of the vibrating piece 32 may be the same as the Young's modulus of the first support piece 323.
  • the vibrator 31 may include a first magnet 311 and a second magnet 312 that can move relative to each other as shown in FIG. 8b.
  • a mounting hole 122 may be provided on the middle frame 11, and the second magnet 312 may pass through the mounting hole 122 and be fixed by a bracket 123 On the second surface B2 of the middle frame. Since a part of the second magnet 312 can be located in the mounting hole 122, the space occupied by the vibrator 31 in the accommodating space 20 can be reduced, so as to reduce the gap H between the display module 10 and the middle frame 11, so as to reduce the display The purpose of the thickness of the terminal 01.
  • the example is different from the first and second examples.
  • the upper surface of the vibrator 31 is connected with the lower surface A2 of the display module 10
  • the lower surface of the vibrator 31 is connected with the middle frame 11.
  • the vertical projection area of the vibrator 31 on the lower surface A2 of the display module 10 does not overlap with the vertical projection area of the vibrating plate 32 on the lower surface A2 of the display module 10.
  • the vibrating plate 32 may be located on the periphery of the vibrator 31.
  • the embodiment of the present application does not limit the size of the second gap L2, as long as it can ensure that during the vibration of the vibrating plate 32 and the vibrator 31, the vibration between the vibrating plate 32 and the vibrator 31 will not cause obstacles to each other.
  • the material constituting the vibrating plate 32 is the same as that described above, and will not be repeated here.
  • the difference between the display module 10 and the middle frame 11 can be reduced.
  • the gap H between them achieves the purpose of reducing the thickness of the display terminal 01.
  • the vibrating plate 32 is connected to the lower surface A2 of the display module 10 through the first adhesive layer 321a.
  • the arrangement of the film layer pattern of the first adhesive layer 321a and the material constituting the first adhesive layer 321a are the same as those described above, and will not be repeated here.
  • the above-mentioned display module 10 further includes a first supporting sheet 323 as shown in FIG. 9c.
  • the first supporting sheet 323 is located between the vibrating sheet 32 and the display module 10.
  • the first supporting piece 323 is connected to the upper surface C1 of the vibrating piece 32 through the first adhesive layer 321a.
  • the first supporting sheet 323 is connected to the lower surface A2 of the display module 10 through the third adhesive layer 321c.
  • the display terminal 01 further includes a second supporting piece 324.
  • the second supporting sheet 324 is located between the vibrator 31 and the display module 10.
  • the second supporting sheet 324 is connected to the lower surface A2 of the display module 10 through the fourth adhesive layer 321d.
  • the second supporting piece 324 is also connected to the upper surface of the vibrator 31 through the fifth adhesive layer 321e.
  • the fourth glue layer 321d and the fifth glue layer 321e can couple the vibration of the vibrator 31 to the display module 10.
  • the fourth glue layer 321d and the fifth glue layer 321e can be respectively located on the second support sheet 324 and the vibrator 31 A whole film layer on the surface.
  • the area of the upper surface of the second support sheet 324 (that is, the surface of the second support sheet 324 in contact with the display module 10) is larger than the area of the upper surface of the vibrator 31.
  • a part of the second support sheet 324 is connected to the vibrator 31 through the fifth adhesive layer 321e, and the other part extends out of the vibrator 31 and is located at the periphery of the vibrator 31.
  • the second supporting sheet 324 since the second supporting sheet 324 has a sheet-like structure, its contact area with the display module 10 is relatively large. Therefore, by contacting the upper and lower surfaces of the second support piece 324 with the display module 10 and the vibrator 31, respectively, the contact area between the vibrator 31 and the display module 10 can be increased, so that the vibrator 31 will The driving force provided by the display module 10 can be applied to the display module 10 more evenly. The probability of damage to the display module 10 during the vibration process is reduced.
  • the deformation area of the display module 10 can be enlarged, so that the driving force provided to the display module 10 can be more transmitted to the display module 10 during the vibrating process of the vibrator 31.
  • the efficiency of the vibrator 31 to drive the display module 10 to vibrate is increased, power consumption is reduced, and the sound effect of the screen is improved.
  • first supporting piece 323 and the second supporting piece 324 may be thin metal sheets.
  • the material constituting the first supporting piece 323 and the second supporting piece 324 may be a single metal material or a metal alloy material.
  • the display terminal 01 further includes at least one second mass 325 disposed on the lower surface of the second supporting piece 324.
  • the area where the vibrator 31 is projected vertically on the lower surface of the second support piece 324 does not overlap with the area where the second mass 325 is projected vertically on the lower surface of the second support piece 324.
  • the second mass 325 is located at the periphery of the vibrator 31 and has a third gap L3 between it and the vibrator 31.
  • the present application does not limit the size of the third gap L3, as long as it can be ensured that the second mass 325 and the vibrator 31 will not come into contact during the vibration of the vibrator 31, which will affect the vibration of the vibrator 31. That's it.
  • the arrangement manner and technical effect of the at least one second mass 325 on the lower surface of the second supporting piece 324 are the same as the arrangement manner of the first mass 322, and will not be repeated here.
  • Those skilled in the art can perform force analysis on the process in which the second support plate 324 transmits the driving force of the vibrator 31 to the display module 10, and perform a force analysis of the vibration process, so as to obtain a setting method that is more conducive to driving the display module 10 to vibrate. .
  • the second mass 325 is provided on the part where the second support piece 324 protrudes from the vibrator 31, the second mass 325 is in the process of transmitting the driving force of the vibrator 31 to the display module 10 by the second support piece 324.
  • the block 325 can generate a vibration acceleration, which is coupled to the display module 10 through the second support piece 324, thereby increasing the driving force provided by the coupling of the second support piece 324 to the display module 10, and achieves the purpose of increasing the volume of sound emitted by the screen. .
  • the second mass 325 can be made of metal materials.
  • the display terminal 01 further includes at least one disposed on the lower surface C2 of the vibrating plate 32, as shown in FIG. 9e The third mass 326 shown.
  • the vibrating plate 32 may include four third masses 326. Each third mass 326 is located at a corner of the lower surface C2. Or, for another example, the vibrating plate 32 may include multiple (for example, more than four) third masses 326. A plurality of third masses 326 are arranged in a circle around the edge of the lower surface C2. Alternatively, the vibrating plate 32 may include a third mass 326. The third mass 326 is a circle of frame structure connected end to end.
  • the vibrating plate 32 may include a third mass 326.
  • the third mass 326 is located at the center of the lower surface C2 of the vibrating plate 32.
  • the material constituting the above-mentioned third mass block 326 may be a simple metal material or a metal alloy material.
  • the third mass 326 since the third mass 326 is disposed on the lower surface C of the vibrating plate 32, the third mass 326 can generate a vibration acceleration during the deformation of the vibrating plate 32.
  • the acceleration is coupled to the display module 10 through the vibrating plate 32, so that the driving force provided by the coupling of the vibrating plate 32 to the display module 10 can be increased, so as to achieve the purpose of increasing the amount of sound produced by the screen.
  • the above is only an example of the arrangement of the third mass 326 on the lower surface C2.
  • Those skilled in the art can use the third mass 326 to assist in the deformation of the vibrating plate 32.
  • Deformation degree The force analysis is performed on the process of driving the display module 10 to vibrate, so as to obtain a setting mode that is more conducive to driving the display module 10 to vibrate.
  • the vibrating plate 32 is located on the periphery of the vibrator 31.
  • the vibrator 31 (or the vibrating plate 32) can be arranged at the center of the accommodating space 20 (as shown in FIG. 4a) so as to be connected to the center of the display module 10.
  • the vibrating plate 32 (or the vibrator 31) is arranged at the edge of the accommodating space 20, and this part can be used as a handset of a mobile phone.
  • the vibrator 31 (or the vibrating plate 32) connected to the center position of the display module 10 vibrates, the driving force provided can directly act on the center position of the display module 10 as the diaphragm, thereby increasing The amplitude of the entire display module 10.
  • the display module 10 is made to act as a speaker, and in the process of realizing screen sound, both low-frequency sound signals and high-frequency sound signals can be transmitted, and louder sound can be obtained.
  • the amplitude of the display module 10 at the edge can be increased.
  • the display module 10 can be used as an earpiece, and in the process of realizing screen sound, when transmitting high-frequency sound signals, a louder sound can be obtained.
  • an adhesive layer 111 as shown in FIG. 9d is provided between the display module 10 and the middle frame 11.
  • the thickness F of the adhesive layer 111 may be 0.2 mm to 0.5 mm.
  • the Young's modulus of the adhesive layer 111 may be 10Mpa to 80Mpa.
  • the adhesive force of the adhesive layer 111 is too small, which is not conducive to firmly bonding the display module 10 and the middle frame 11 together.
  • the adhesive layer 111 can firmly bond the display module 10 and the middle frame 11 together.
  • the thickness F of the adhesive layer 111 may be 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm.
  • the adhesive layer 111 When the thickness F of the adhesive layer 111 is greater than 0.5 mm, the adhesive layer 111 is too soft, so that during the vibration of the display module 10, the boundary conditions of the display terminal 01 become softer, and the reliability of the entire display terminal 01 is reduced. Due to the nature, the display screen 101 is prone to the risk of broken screen.
  • the Young's modulus of the adhesive layer 111 can be in the range of 10Mpa to 80Mpa, the smaller the Young's modulus of the adhesive layer 111, the softer the boundary conditions of the display terminal 01 and the easier the display module 10 will be. Vibration, which can effectively increase the sound produced by the screen.
  • the vibrator 31 and the vibrating plate 32 can drive the display module in a direction perpendicular to the lower surface A2 of the display module 10 after receiving the driving signal output by the audio digital processor 300 respectively. 10 Vibrate to make the screen sound.
  • the following is an example to illustrate how the vibrator 31 and the vibrating plate 32 receive the driving signal output by the audio digital processor 300.
  • the display terminal 01 includes an audio digital processor 300, a first power amplifier 301, and a filter 302 as shown in FIG. 10.
  • the output terminal of the audio digital processor 300 is coupled to the input terminal of the first power amplifier 301.
  • the audio digital processor 300 is used to output audio signals to the first power amplifier 301.
  • the aforementioned audio digital processor 300 includes an audio signal receiving module 40 and a sound effect calculation module 41.
  • the audio signal receiving module 40 may be electrically connected to the CPU provided on the PCB shown in FIG. 1 to receive the audio signal output by the CPU.
  • the sound effect calculation module 41 is used to adjust the frequency band of the audio signal output by the audio signal receiving module 40 to achieve the purpose of audio effect debugging.
  • the sound effect calculation module 41 may increase the frequency of the low frequency part output by the audio signal receiving module 40.
  • the sound effect calculation module 41 may lower the frequency of the high frequency part output by the audio signal receiving module 40. Therefore, the audio output by the audio digital processor 300 can meet the requirements of the audio signal to be processed by the first power amplifier 301.
  • the audio signal output by the CPU may be a sound played by the display terminal 01 itself, such as an audio signal when music or video is played.
  • the aforementioned audio signal may be the sound transmitted to the CPU through the earpiece when the display terminal 01 is in a voice call.
  • the frequency range of the audio signal that the human ear can receive is 200 Hz to 20 KHz. Therefore, the frequency of the audio signal output by the CPU can be in the range of 200 Hz to 20 KHz.
  • the first output terminal O1 of the first power amplifier 301 is coupled to the filter 302.
  • the second output terminal O2 of the first power amplifier 301 is coupled to the vibrator 31.
  • the first power amplifier 301 is used to perform power amplifying processing on the audio signal processed by the sound effect calculation module 41, so as to drive the vibrator 31 to receive the audio signal output by the first power amplifier 301 (a few hundred KHz, for example, 400KHz) After that, vibration is performed, and the vibration phase of the vibrator 31 is the first phase.
  • the above-mentioned first power amplifier 301 may adopt a class H smart power amplifier (PA) with a higher output frequency.
  • PA class H smart power amplifier
  • the first magnet 311 or the second magnet 312 may be a coil.
  • the above-mentioned coil can act as an inductor to filter out part of the audio by itself, and drive the main motor under the action of the filtered audio signal.
  • the display module 10 emits sounds with a frequency in the range of 200 Hz to 20 KHz.
  • the vibrating plate 32 mainly includes a vibrating plate 32, which can be equivalent to a capacitor. Therefore, when the first power amplifier 301 capable of outputting several hundred KHz is directly coupled to the vibrating plate 32, the vibrating plate 32 will be short-circuited. Therefore, the filter 302 needs to be coupled between the first power amplifier 301 and the vibrating plate 32.
  • the filter 302 is used for filtering the audio signal processed by the sound effect calculation module 41. For example, a part of the audio frequency of the 400KHz audio signal output by the first power amplifier 301 is filtered out, so that the vibrating plate 32 vibrates in the above-mentioned first phase under the control of the filtered audio signal, and drives the display module 10 to emit at a frequency of 200 Hz. ⁇ 20KHz range of sound.
  • the audio signal in the range of 200 Hz to 20 KHz may be referred to as low frequency signal, and the signal between 4 KHz to 20 KHz may be referred to as medium and high frequency signals.
  • low frequency signal the signal between 4 KHz to 20 KHz
  • medium and high frequency signals the division of low-frequency, medium- and high-frequency signals in this application is only for illustrative purposes, and is not a limitation on low-frequency, medium and high-frequency signals.
  • the following describes the process in which the vibrator 31 and the vibrating plate 32 drive the display module 10 to perform screen sound according to the frequency of the audio signal output by the CPU.
  • the CPU in FIG. 10 when the CPU in FIG. 10 outputs a 1KHz low-frequency signal, after the low-frequency signal passes through the audio digital processor 300 and the first power amplifier 301, the first power amplifier 301 outputs an audio signal of several hundred KHz to be applied to the vibrator 31, To drive the vibrator 31 to vibrate.
  • the vibrator 31 acts as an inductor to filter out a part of the audio signal of several hundred KHz, and vibrates under the action of the remaining 1KHz audio signal.
  • the first power amplifier 301 outputs audio signals of several hundred KHz after passing through the filter 302, filters out a part of the audio signals of several hundred KHz, and applies the remaining 1KHz audio signal to the vibrating plate 32.
  • the voltage applied to the vibrator 31 and the vibrating plate 32 is the same. Based on this, driven by a low frequency signal of 1 KHz, the impedance of the coil in the vibrator 31 is small (for example, 8 ohms), so the current flowing through the coil is relatively large. On the other hand, the impedance of the vibrating piece 32 as a capacitor is large (for example, 200 ohms), and the current flowing through the vibrating piece 32 is small.
  • the vibrator 31 and the vibrating plate 32 vibrate at the same time, since the vibration phase is the same, the vibration of the vibrator 31 and the vibrating plate 32 can be superimposed, and the vibrator 31 is used as the main driving source to drive the display module 10 to vibrate to emit 1KHz Low frequency signal.
  • the CPU in FIG. 10 when the CPU in FIG. 10 outputs a high-frequency signal of 10KHz, after the high-frequency signal passes through the audio digital processor 300 and the first power amplifier 301, the first power amplifier 301 outputs an audio signal of several hundred KHz to be applied to the vibrator. 31 to drive the vibrator 31 to vibrate.
  • the vibrator 31 acts as an inductor to filter out a part of the audio signal of several hundred KHz, and vibrates under the action of the remaining 10 KHz audio signal.
  • the first power amplifier 301 outputs audio signals of several hundred KHz after passing through the filter 302, filters out a part of the audio signals of several hundred KHz, and applies the remaining 10KHz audio signals to the vibrating plate 32.
  • the voltage applied to the vibrator 31 and the vibrating plate 32 is the same. Based on this, driven by a high-frequency signal of 10 KHz, the impedance of the coil in the vibrator 31 is relatively large (for example, 40 ohms), so the current flowing through the coil is relatively small. On the other hand, the impedance of the vibrating piece 32 as a capacitor is small (for example, 2 ohms), and the current flowing through the vibrating piece 32 is relatively large.
  • the vibrator 31 and the vibrating plate 32 vibrate at the same time, the vibrations of the vibrator 31 and the vibrating plate 32 can be superimposed, and the vibrating plate 32 can be used as the main driving source to drive the display module 10 to vibrate to send out a high frequency signal of 10KHz. So as to solve the problem of low volume when the screen sends out high-frequency signals.
  • the display terminal 01 includes an audio digital processor 300, a first power amplifier 301, and a second power amplifier 303 as shown in FIG. 11a.
  • the output frequency of the first power amplifier 301 is greater than the output frequency of the second power amplifier 303.
  • the first power amplifier 301 may be the above-mentioned class H smart PA.
  • the second power amplifier 303 may be an AB type smart PA.
  • the output terminal of the audio digital processor 300 is coupled to the input terminal of the first power amplifier 301 and the second power amplifier 301.
  • the audio digital processor 300 is used to output the above audio signal to the first power amplifier 301 and the second power amplifier 303.
  • the structure of the audio digital processor 300 is the same as that of Example 4, and will not be repeated here.
  • the output terminal of the first power amplifier 301 is coupled to the vibrator 31.
  • the first power amplifier 301 is used to amplify the audio signal output by the audio digital processor 300 to drive the vibrator 31 to vibrate.
  • the output end of the second power amplifier 303 is coupled to the vibrating plate 32, and the second power amplifier 303 is used to amplify the audio signal output by the audio digital processor 300, so that the vibration phase of the vibrating plate 32 is the first phase.
  • the signal output by the second power amplifier 303 can drive the vibrating plate 32 to vibrate and prevent the vibrating plate 32 from being short-circuited.
  • the display terminal 01 may include a plurality of vibrating plates, such as a vibrating plate 32a, a vibrating plate 32b, and so on as shown in FIG. 11b.
  • the display terminal 01 may include a plurality of second power amplifiers as shown in FIG. 11b, for example, a second power amplifier 303a, a second power amplifier 303b, and so on. Each second power amplifier 303 is coupled to a vibrating plate 32.
  • each vibrating plate 32 can be individually controlled by a second power amplifier 303.
  • each second power amplifier 303 can be made to drive one vibrating plate 32 coupled to it to vibrate.
  • all the vibrating plates 32 provide driving force to the display module 10, so that the frequency of vibration of the display module 10 can be increased, so as to achieve the purpose of increasing the amount of sound emitted by the screen.
  • part of the second power amplifier 303 can be made to drive a vibrating plate 32 coupled to it to vibrate. In this case, only part of the vibrating plate 32 provides driving force to the display module 10, so that the volume of the screen sound will not be too large.
  • the display terminal 01 may include a second power amplifier 303, as shown in FIG. 11c, and a plurality of vibrating plates coupled to the second power amplifier 303, such as vibrating plates 32a. , Vibrating plate 32b. « In this way, one second power amplifier 303 can simultaneously control multiple vibrating plates to vibrate.
  • the circuit structure of the display terminal 01 can be simplified.
  • the display terminal 01 may include a third power amplifier 304 coupled with the audio digital processor 300 and the dynamic speaker 33.
  • the third power amplifier 304 may be the above-mentioned class H smart PA.
  • the vibrator 31 and the vibrating plate 32 jointly drive the display module 10 to vibrate under the control of the first power amplifier 301 and the second power amplifier 303, respectively, so as to achieve screen sound.
  • the third power amplifier 304 controls the dynamic speaker to emit sound signals, so that the display terminal 01 can realize multi-channel sound.

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Abstract

本申请实施例提供一种显示终端，涉及显示技术领域，用于解决显示终端上设置的听筒，导致整机屏占比降低的问题。该显示终端包括中框、显示模组、振子以及至少一个振动片。其中，显示模组与中框相连接，且与中框之间形成一容纳空间。振子的至少一部分设置于容纳空间中。振子与显示模组或与中框相连接。振动片位于容纳空间中。振动片的上表面与显示模组的下表面相连接。振动片的下表面朝向中框。在垂直于振动片的上表面的方向上，振子和振动片用于驱动显示模组上、下振动。

Description

一种显示终端
本申请要求于2019年09月12日提交国家知识产权局、申请号为201910866768.X、申请名称为“一种显示终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种显示终端。
背景技术
用户对显示终端的整机屏占比的要求越来越高。目前，显示终端上，例如正面的顶部需要打孔以安装听筒。这样一来，由于听筒的存在，导致显示屏无法完全占据显示终端的正面，从而导致整机屏占比降低，且不利于显示终端的无孔化设计。
发明内容
本申请实施例提供一种显示终端，用于解决显示终端上设置的听筒，导致整机屏占比降低的问题。
为达到上述目的，本申请采用如下技术方案：
本申请实施例的一方面，提供一种显示终端。该显示终端包括中框、显示模组、振子以及至少一个振动片。其中，显示模组与中框相连接，且与中框之间形成一容纳空间。振子的至少一部分设置于容纳空间中。振子与显示模组或与中框相连接。振动片位于容纳空间中。振动片的上表面与显示模组的下表面相连接。振动片的下表面朝向中框。在垂直于振动片的上表面的方向上，振子和振动片用于驱动显示模组上、下振动。这样一来，可以使得振动片与振子的振动相位相同，从而能够将振动片和振子的振动叠加后，耦合至显示模组，以提高显示模组作为振膜在振动过程中的振幅，增大显示终端发出的高频声音的音量。
可选的，显示终端还包括第一支撑片。第一支撑片位于振动片与显示模组之间。第一支撑片的上表面显示模组的下表面相连接，第一支撑片的下表面与振动片的上表面相连接。第一支撑片的上表面的面积，大于振动片的上表面的面积。这样一来，一方面，由于第一支撑片为片状结构，其与显示模组的接触面积较大。因此，通过将上述第一支撑片的上、下表面分别与显示模组和上述振动片相接触，可以提高振动片与显示模组的接触面积，使得上述振动片以及振子振动过程中，向显示模组提供的驱动力能够更加均匀的施加至显示模组。减小显示模组在振动过程中出现损坏的几率。另一方面，通过第一支撑片，还可以扩大显示模组形变区域面积，使得振动片以及振子振动过程中，向显示模组提供的驱动力能够更多的传递至显示模组。从而增加振动片以及振子驱动显示模组振动的效率，降低功耗，提升屏幕发声的效果。
可选的，振动片位于振子和显示模组之间，振动片的下表面与振子的上表面相连接。振子的下表面与中框相连接。这样一来，振子上、下振动过程中，可以直接将驱动力传递至振动片，并与振动片的振动叠加后一并施加至显示模组。
可选的，振动片的上表面的面积，大于与振子的上表面的面积。这样一来，一方面，由于振动片为片状结构，其上表面与显示模组的接触面积较大。因此，通过将上述振动片的上表面、下表面分别与显示模组和上述振子相接触，可以提高振子与显示模组的接触面积，使得上述振子振动过程中，向显示模组提供的驱动力能够更加均匀的施加至显示模组。减小显示模组在振动过程中出现损坏的几率。另一方面，通过增大振动片上表面的面积，还可以扩大显示模组形变区域面积，使得振子振动过程中，向显示模组提供的驱动力能够更多的传递至显示模组。从而增加振子驱动显示模组振动的效率，降低功耗，提升屏幕发声的效果。
可选的，显示终端还包括至少一个第一质量块。该第一质量块设置于振动片的下表面。振子在振动片的下表面上垂直投影的区域，与第一质量块在振动片的下表面上垂直投影的区域不重叠。在振动片发生形变的过程中，第一质量块可以产生一个振动加速度，该加速度通过振动片耦合到显示模组上，从而可以提高振动片耦合至显示模组提供的驱动力，达到提高屏幕发声音量的目的。
可选的，振子的上表面与显示模组的下表面相连接，振子的下表面与中框相连接。振子在显示模组的下表面上垂直投影的区域，与振动片在显示模组的下表面上垂直投影的区域不重叠。这样一来，通过将振动片设置于振子的周边，可以减小显示模组与中框之间的间隙，达到减小显示终端厚度的目的。
可选的，显示终端还包括第二支撑片。第二支撑片位于振子与显示模组之间，第二支撑片的上表面与显示模组的下表面相连接，第二支撑片的下表面与振子的上表面相连接。第二支撑片的上表面的面积，大于振子的上表面的面积。这样一来，一方面，由于第二支撑片为片状结构，其与显示模组的接触面积较大。因此，通过将上述第二支撑片的上、下表面分别与显示模组和上述振子相接触，可以提高振子与显示模组的接触面积，使得上述振子振动过程中，向显示模组提供的驱动力能够更加均匀的施加至显示模组。减小显示模组在振动过程中出现损坏的几率。另一方面，通过第二支撑片，还可以扩大显示模组形变区域面积，使得振子振动过程中，向显示模组提供的驱动力能够更多的传递至显示模组。从而增加振子驱动显示模组振动的效率，降低功耗，提升屏幕发声的效果。
可选的，显示终端还包括至少一个第二质量块。该第二质量块设置于第二支撑片的下表面。振子在第二支撑片的下表面上垂直投影的区域，与第二质量块在第二支撑片的下表面上垂直投影的区域不重叠。第二质量块的设置方式以及技术效果与第一质量块的设置方式同理可得，此处不再赘述。
可选的，显示终端还包括至少一个第三质量块。第三质量块位于振动片的下表面。第三质量块的设置方式以及技术效果与第一质量块的设置方式同理可得，此处不再赘述。
可选的，显示终端还包括位于振动片的上表面上的第一胶层。第一胶层沿振动片上表面的边缘设置。从而能够根据振动片的形变形式、形变程度对第一胶层的形状和排布进行设置，使得第一胶层的设置方式更有利于驱动显示模组振动。
可选的，振动片的厚度为0.2mm～2mm。当振动片的厚度在0.2mm～2mm的范围内时，即可以保证振动片在容易发生振动的情况下，具有一定的驱动能力，又可以减小 振动片的厚度对显示终端的整机厚度的影响。
可选的，显示模组与中框之间设置有粘接层。粘接层的厚度0.2mm～0.5mm。这样一来，可以使得粘接层能够将显示模组与中框稳固的粘接在一起，此外，在上述厚度范围内，粘接层的厚度越大，粘接层质地越软，显示模组更容易在受力后发生振动，有利于提高屏幕发声的音量。此外，粘接层的杨氏模量可以为10Mpa～80Mpa。此时，该粘接层的杨氏模量越小，显示终端的边界条件越软，显示模组越容易振动，从而能够有效增大屏幕发声的声音。
可选的，振子包括第一磁体和第二磁体；第一磁体与显示模组相连接，第二磁体与中框相连接。第一磁体与显示模组朝向中框一侧的表面相连接，第二磁体可以穿过上述安装孔，并通过支架固定于中框的第二表面。在此情况下，由于第二磁体的一部分可以位于安装孔内，从而可以减小振子在容纳空间中的占用空间，以减小显示模组与中框之间的间隙，达到减小显示终端厚度的目的。
可选的，显示终端包括音频数字处理器、第一功率放大器、滤波器。音频数字处理器的输出端与第一功率放大器的输入端相耦接。音频数字处理器用于向第一功率放大器输出音频信号。第一功率放大器的第一输出端与滤波器相耦接，第一功率放大器的第二输出端与振子相耦接；第一功率放大器用于对音频信号进行放大处理，使得振子的振动相位为第一相位。滤波器的输出端与振动片相连接，滤波器用于对音频信号进行滤波处理，使得振动片的振动相位为第一相位。当CPU输出低频信号时，该低频信号经过音频数字处理器、第一功率放大器后，该第一功率放大器输出几百KHz的音频信号施加至振子，以驱动振子振动。振子作为电感将几百KHz的音频信号中的一部分音频信号滤除，并在剩余的低频信号作用下振动。此外，第一功率放大器输出几百KHz的音频信号经过滤波器后，将几百KHz的音频信号中的一部分音频信号滤除，并将剩余的低频信号施加至振动片。由于振子和振动片并联，因此振子和振动片上施加的电压相同。基于此，在低频信号的驱动下，振子中线圈的阻抗较小，因此流过该线圈的电流较大。而作为电容的振动片的阻抗较大，流过振动片的电流较小。此时，振子和振动片同时振动时，由于振动相位相同，所以振子和振动片的振动可以叠加，且振子作为主要的驱动源驱动显示模组进行振动，以发出低频信号。或者，当CPU输出高频信号时，振子中线圈的阻抗较大，因此流过该线圈的电流较小。而作为电容的振动片的阻抗较小，流过振动片的电流较大。此时，振子和振动片同时振动时，振子和振动片的振动可以叠加，且振动片可以作为主要的驱动源驱动显示模组进行振动，以发出高频信号，从而解决屏幕发出高频信号时音量较小的问题。
可选的，显示终端包括音频数字处理器、第一功率放大器、第二功率放大器。第一功率放大器的输出频率大于的第二功率放大器的输出频率。音频数字处理器的输出端与第一功率放大器的输入端、第二功率放大器相耦接。音频数字处理器用于向第一功率放大器、第二功率放大器输出音频信号。第一功率放大器的输出端与振子相耦接。第一功率放大器用于对音频信号进行放大处理，使得振子的振动相位为第一相位。第二功率放大器的输出端与振动片相耦接，第二功率放大器用于对音频信号进行放大处理，使得振动片的振动相位为第一相位。振子在第一功率放大器的驱动下振动，并在驱动屏幕发出低频信号时，作为主要的驱动源驱动显示模组进行振动。振动片在第二 功率放大器的驱动下振动，并在驱动屏幕发出高频信号时，作为主要的驱动源驱动显示模组进行振动。
附图说明
图1为本申请实施例提供的一种显示终端的结构示意图；
图2为图1中显示模组的一种结构示意图；
图3为图1中显示模组的另一种结构示意图；
图4a为本申请实施例提供的显示模组和中框的连接结构示意图；
图4b为本申请实施例提供的显示模组、中框与壳体的连接结构示意图；
图5a为本申请实施例提供的另一种显示终端的结构示意图；
图5b为图5a中振子的一种具体结构示意图；
图6a为本申请实施例提供的另一种显示终端的结构示意图；
图6b为图6a中第一胶层的一种结构示意图；
图6c为图6a中第一胶层的另一种结构示意图；
图6d为图6a中第一胶层的另一种结构示意图；
图6e为图6a中第一胶层的另一种结构示意图；
图7a为本申请实施例提供的另一种显示终端的结构示意图；
图7b为图7a中第一质量块的一种设置方式示意图；
图7c为图7a中第一质量块的另一种设置方式示意图；
图7d为图7a中第一质量块的另一种设置方式示意图；
图8a为本申请实施例提供的另一种显示终端的结构示意图；
图8b为本申请实施例提供的另一种显示终端的结构示意图；
图9a为本申请实施例提供的另一种显示终端的结构示意图；
图9b为图9a中振动片的一种结构示意图；
图9c为图9a中振动片的另一种结构示意图；
图9d为本申请实施例提供的另一种显示终端的结构示意图；
图9e为本申请实施例提供的另一种显示终端的结构示意图；
图9f为图9e中第三质量块的一种设置方式示意图；
图10为本申请实施例提供的一种用于驱动振子和振动片振动的电路结构示意图；
图11a为本申请实施例提供的另一种用于驱动振子和振动片振动的电路结构示意图；
图11b为本申请实施例提供的另一种用于驱动振子和振动片振动的电路结构示意图；
图11c为本申请实施例提供的另一种用于驱动振子和振动片振动的电路结构示意图；
图11d为本申请实施例提供的另一种用于驱动振子和振动片振动的电路结构示意图。
附图标记：
01-显示终端；10-显示模组；11-中框；112-承载部；113-边框；300-音频数字处理器；12-壳体；101-显示屏；102-BLU；103-盖板；110-承载台；111-粘接层；20-容纳 空间；31-振子；32-振动片；122-安装孔；123-支架；311-第一磁体；312-第二磁体；321a-第一胶层；321b-第二胶层；321c-第三胶层；321d-第四胶层；321e-第五胶层；322-第一质量块；323-第一支撑片；324-第二支撑片；325-第二质量块；326-第三质量块；41-音频信号接收模块；41-音效运算模块；301-第一功率放大器；302-滤波器；303-第二功率放大器；304-第三功率放大器；33-动圈扬声器。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。
以下，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”等的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
此外，本申请中，“上”、“下”、“左”、“右”等方位术语可以包括但不限于相对附图中的部件示意置放的方位来定义的，应当理解到，这些方向性术语可以是相对的概念，它们用于相对于的描述和澄清，其可以根据附图中部件附图所放置的方位的变化而相应地发生变化。
在本申请中，除非另有明确的规定和限定，术语“连接”应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或成一体；可以是直接相连，也可以通过中间媒介间接相连。此外，术语“耦接”可以是实现信号传输的电性连接的方式。
本申请实施例提供一种的显示终端。该显示终端包括例如手机、平板电脑、个人数字助理(personal digital assistant，PDA)、车载电脑等。本申请实施例对上述显示终端的具体形式不做特殊限制。以下为了方便说明，是以显示终端为如图1所示的手机为例进行的说明。
上述显示终端01，如图1所示，主要包括但不限于显示模组10。其中，上述显示模组10，如图2所示，包括显示屏(display panel，DP)101。
在本申请的一些实施例中，上述显示屏101可以为液晶显示(liquid crystal display，LCD)屏。在此情况下，该显示模组10还包括用于向该LCD提供光源的背光模组(back light unit，BLU)102。
或者，在本申请的另一些实施例中，如图3所示，上述显示屏101可以为有机发光二极管(organic light emitting diode，OLED)显示屏，该OLED显示屏能够实现自发光，因此显示模组10中无需设置上述BLU。
需要说明的是，上述OLED显示屏中的衬底基板可以采用柔性树脂材料构成。在此情况下，该OLED显示屏为柔性显示屏，从而使得具有上述OLED显示屏的手机可以为折叠手机。
或者，上述OLED显示屏中的衬底基板还可以采用质地较硬的材料，例如玻璃构成。在此情况下，上述OLED显示屏为硬质显示屏。
在本申请的一些实施例中，如图2或图3所示，上述显示模组10还包括位于显示屏101显示侧的盖板103，例如盖板玻璃(cover glass，CG)。该盖板玻璃具有一定的韧性。
此外，上述显示终端01还包括如图1所示的中框11。显示模组10安装于中框11上。在本申请的一些实施例中，如图4a所示，中框11在靠近显示模组10的一侧设置有一圈承载台110。该承载台110上粘贴有粘接层111。显示模组10通过上述粘接层111固定于中框11上，使得显示模组10与中框11相连接，从而达到将显示模组10安装于中框11上的目的。
示例的，上述粘接层111可以为泡棉胶。该泡棉胶具有一定的弹性，在外力作用下能够发生形变。
此外，显示终端01还包括如图1所示的中框11。该中框11背离显示模组10一侧的表面(图4a中的第二表面B2)上用于安装电池、印刷电路板(printed circuit board，PCB)、摄像头(Camera)、天线等内部元件。如图1所示，该PCB上可以设置中央处理器(Central Processing Unit，CPU)。
在此情况下，上述显示终端01还可以包括如图1所示的壳体12。如图4b所示，壳体12设置于中框11的第二表面B2所示在的一侧，且可以通过粘接层111与中框11相连接。壳体12能够对安装于中框11上的上述内部元件进行保护。
此外，如图4a所示，固定于该承载台110上的显示模组10的下表面A2(即显示模组10朝向中框11的一侧表面)，与该中框11的第一表面B1之间具有间隙H。该显示模组10和中框11通过间隙H形成一容纳空间20。
需要说明的是，如图1所示，中框11包括用于承载电池、PCB的承载部112，以及绕承载部112一周设置的边框113。其中，承载部112与显示模组10平行或近似平行。在此情况下，本申请实施例中，朝向中框11可以是承载部指，朝向中框11的承载部112。
在此基础上，显示终端01还包括如图5a所示的振子31。振子31的至少一部分设置于容纳空间20中。该振子31与显示模组10或中框11均相连接。振子31用于根据如图1所示的音频(audio)数字处理器(digital signal processing，DSP)300，输出的驱动信号，沿垂直于显示模组10上表面A1(即显示模组10的显示面)(如图5a所示)的方向驱动显示模组10振动。这样一来，在振子31的驱动下，显示模组10作为振膜，在振动过程中推动空气产生声音，以实现屏幕发声。
需要说明的是，振子31的至少一部分设置于容纳空间20中是指，在本申请的一些实施例中，可以将整个振子31设置于上述容纳空间20中。示例的，该振子31可以为线性振动器。
或者，振子31的至少一部分设置于容纳空间20中是指，如图5b所示，可以在中框11上设置安装孔122，该振子31的一部分穿过安装孔122，与中框11的第二表面B2相连接。
示例的，上述振子31可以包括在工作状态下，相对运动的第一磁体311和第二磁体312。第一磁体311与显示模组10朝向中框11一侧的表面相连接，第二磁体312可以穿过上述安装孔122，并通过支架123固定于中框的第二表面B2。
在此情况下，由于第二磁体312的一部分可以位于安装孔122内，从而可以减小振子31在容纳空间20中的占用空间，以减小显示模组10与中框11之间的间隙H，达到减小显示终端01厚度的目的。
上述第一磁体311可以为线圈，第二磁体312可以为磁铁。或者第一磁体311为磁铁，第二磁体312为线圈。在此情况下，当线圈接收到音频数字处理器300输出的驱动信号后，会产生一个交变的磁场。该磁场的强度与线圈内电流的大小成正比。磁铁可以产生一个大小和方向不变的恒定的磁场。在上述两个磁场的相互作用下，可以使得线圈沿垂直于显示模组10的下表面A1(如图5a所示)的方向，切割磁感线上、下振动。从而达到驱动显示模组10振动的目的。
由于屏幕发声的声音信号的频率越大，上述线圈的感抗也会越大。在此情况下，即使音频数字处理器300输出最大电压，由于线圈的阻抗增大，导致线圈上的电流会减小。由上述可知，线圈产生的磁场的强度与线圈内电流的大小成正比，因此圈产生的磁场的强度也会减小。从而会还使得屏幕发声过程中，高频声音功率较小，使得显示终端01发出的高频声音的音量较小。
为了增大高频声音的音量，显示终端01还包括如图5a所示的至少一个振动片32。该振动片32位于容纳空间20中。该振动片32的上表面(即振动片32朝向显示模组10一侧的表面)与显示模组10的下表面A2相连接，该振动片32的下表面(与振动片32的上表面相对设置)朝向中框11。
该振动片32用于在接收到音频数字处理器300输出的驱动信号后，沿垂直于振动片32上表面(或者显示模组10上表面A1)的方向，驱动显示模组10上、下振动。这样一来，可以使得振动片32与振子31的振动相位相同，从而能够将振动片32和振子31的振动叠加后，耦合至显示模组10，以提高显示模组10作为振膜在振动过程中的振幅，增大显示终端01发出的高频声音的音量。
基于此，振动片32、显示模组10以及振子31中第一磁体311可以构成该显示终端01的发声系统。在该发生系统中，显示模组10作为振膜，在振子31和振动片32的共同驱动下进行振动，并在振动过程中，推动空气发声，达到屏幕发声的目的。此时，上述发声系统能够实现听筒或喇叭的作用，以对音频信号进行播放。
由上述可知，显示模组10中的显示屏101可以为LCD屏或者OLED显示屏。此外，相对于LCD屏而言，OLED显示屏能够自发光。因此，显示模组10中无需设置BLU，所以显示模组10的厚度薄，其作为振膜实现屏幕发声时，更容易发生形变，使得振膜的发声效果更好。
以下，对振子31和振动片32的结构以及设置方式进行举例说明。
示例一
本示例中，如图5a所示，振子31和振动片32可以堆叠设置。在此情况下，振动片32位于振子31和显示模组10之间。振动片32的下表面(即振动片32朝向中框11的表面)与振子31的上表面(即振子31朝向显示模组10的表面)相连接。此外，该振动片32的上表面与显示模组10的下表面A2相连接。该振子31可以通过振动片32实现与显示模组10的连接。
在此情况下，振子31在振动的过程中，可以与振动片32的振动相叠加，并耦合至显示模组10，从而达到增加显示模组10的振动幅度，达到提高屏幕发声音量的目的。
在本申请的一些实施例中，振动片32可以包括一层电致伸缩片，或者多个层叠设 置的电致伸缩片。每个电致伸缩片包括由金属材料构成的上电极层、下电极层，以及位于该上电极层、下电极层之间的电致伸缩介质层，例如压电陶瓷介质层。
基于此，向上电极层和下电极层施加电压后，在上电极层和下电极层产生的电场作用下，电致伸缩介质层可以发生弹性形变。从而使得电致伸缩介质层在形变的过程中，带动显示模组10，沿垂直于显示模组10上表面A1(如图5a所示)的方向振动。在此情况下，可以通过控制电场的大小、方向等参数，达到控制电致伸缩介质层的形变形式，达到控制显示模组10振动频率的目的。
或者，在另一些实施例中，振动片32可以包括为磁致伸缩材料层。基于此，可以通过在磁致伸缩材料层外部设置导电线圈。在导电线圈通电产生的外加磁场作用下，磁致伸缩材料层可以发生弹性形变。从而使得磁致伸缩材料层在形变的过程中，带动显示模组10，沿垂直于显示模组10下表面A2(如图5a所示)的方向振动。
以下为了方便说明，均是以振动片32包括至少一层压电陶瓷层为例进行的说明。
在本示例的一种可能的实现方式中，如图6a所示，显示终端01包括位于振动片32的上表面C1上的第一胶层321a。该振动片32通过第一胶层321a与显示模组10下表面A2相连接。
例如，上述第一胶层321a可以覆盖整个振动片32的上表面C1的一整层具有粘接性能的薄膜层。
或者，上述第一胶层321a还可以具有一定的胶层图案。例如，如图6b所示，该第一胶层321a的胶层图案绕振动片32的上表面C1的边缘设置。例如，该第一胶层321a可以绕振动片32的上表面C1的边缘一圈设置，形成首尾相接的框架结构的薄膜层。
或者，又例如，如图6c所示，该第一胶层321a的胶层图案为绕振动片32的上表面C1的边缘一圈设置的，多个块状的薄膜层。
或者，又例如，如图6d所示，第一胶层321a的胶层图案包括设置于振动片32的上表面C1左(靠近中框11的左侧的边框113)、右(靠近显示终端01的右侧的边框113)的两个条状的薄膜层。
或者，又例如，如图6e所示，第一胶层321a的胶层图案包括设置于振动片32的上表面C1上(靠近显示终端01的上侧的边框113)、下(靠近显示终端01的下侧的边框113)的两个条状的薄膜层。
需要说明的是，上述仅仅是对第一胶层321a结构或图案设置方式的举例说明，本领域技术人员可以根据振动片32的形变形式、形变程度对驱动显示模组10进行振动的过程进行受力分析，从而得出更有利于驱动显示模组10振动的设置方式。
该第一胶层321a结构或图案的其他设置方式在此不再一一赘述，只要能够保证振动片32在形变过程中，驱动显示模组10沿垂直于显示模组10上表面A1的方向振动即可。
在本申请的一些实施例中，上述第一胶层321a可以为粘接强度较大的胶水，例如双组份胶。或者，在本申请的另一些实施例中，为了在对显示模组10进行维修时，便于将振动片32从显示模组10上拆下来，上述第一胶层321a可以为背胶(即双面胶)。
此外，如图6a所示，振动片32的下表面C2，通过第二胶层321b与振子31相连 接。第二胶层321b的目的在于将振子31与振动片32相连接的同时，将振子31的振动传递至振动片32，并通过振动片32再传递至显示模组10。在此情况下，第二胶层321b可以为覆盖整个振子31朝向振动片32一侧表面的，一整层具有粘接性能的薄膜层。
需要说明的是，由于振子31和振动片32的维修几率不高，且为了增加振子31和振动片32的粘接可靠性。第二胶层321b可以为上述粘接强度较大的胶水。
此外，如图6a所示，振动片32的上表面C1的面积，大于振子31上表面(即振子31与振动片32相接触的表面)的面积。在此情况下，振动片32的一部分通过第二胶层321b与振子31相连接，另一部分伸出振子31，位于该振子31的周边。
这样一来，一方面，由于振动片32为片状结构，其上表面C1与显示模组10的接触面积较大。因此，通过将上述振动片32的上表面C1、下表面C2分别与显示模组10和上述振子31相接触，可以提高振子31与显示模组10的接触面积，使得上述振子31振动过程中，向显示模组10提供的驱动力能够更加均匀的施加至显示模组10。减小显示模组10在振动过程中出现损坏的几率。
另一方面，通过增大振动片32上表面C1的面积，还可以扩大显示模组10形变区域面积，使得振子31振动过程中，向显示模组10提供的驱动力能够更多的传递至显示模组10。从而增加振子31驱动显示模组10振动的效率，降低功耗，提升屏幕发声的效果。
上述振动片32的硬度，与该振动片32的厚度S有关。在本申请的一些实施例中，上述振动片32的厚度S可以为0.2mm～2mm。当振动片32的厚度小于0.2mm时，该振动片32的厚度S太薄，硬度较低，当音频数字处理器300(如图1所示)输出的驱动信号后，该振动片32向显示模组10提供的驱动力的较小。此外，该振动片32能够承受的音频数字处理器300输出的电压较小。此时，该振动片32的驱动能力较小。
或者，当振动片32的厚度S为2mm时，该振动片32的厚度S太大，硬度较高，不利于振动片32在驱动信号的作用下发生振动。此外，由于振动片32的厚度S太大，会影响显示终端01的整机厚度。
综上所述，当振动片32的厚度S在0.2mm～2mm的范围内时，即可以保证振动片32在容易发生振动的情况下，具有一定的驱动能力，又可以减小振动片32的厚度S对显示终端01的整机厚度的影响。在本申请的一些可能的实现方式中，振动片32的厚度S可以为0.2mm、0.3mm、0.5mm、0.8mm、1mm、1.5mm、1.8mm、2mm。
此外，上述振动片32的硬度，还与该振动片32的杨氏模量有关。在上述厚度范围内，当增大振动片32的厚度S时，为了使得振动片32更容易发生振动，可以减小该振动片32的杨氏模量。或者，在上述厚度范围内，当减小振动片32的厚度S时，为了使得振动片32能够向显示模组10提供足够的驱动力，可以增大该振动片32的杨氏模量。
在此基础上，为了提高振动片32耦合至显示模组10提供的驱动力，在本申请的一些实施例中，显示模组10还包括位于振动片32的下表面C2(如图6a所示的)上的至少一个，如图7a所示的第一质量块322。
其中，振子31在振动片32的下表面C2上垂直投影的区域，与第一质量块322 在振动片32的下表面C2上垂直投影的区域不重叠。在此情况下，该第一质量块322可以位于振子31的周边，且与振子31之间具有第一间隙L1。
本申请对该第一间隙L1的大小不做限定，只要能够保证振子31在振动的过程中，第一质量块322与振子31不会发生接触，而影响该振子31的振动即可。
以下，以振动片32的下表面C2为矩形为例，对第一质量块322在该下表面C2上的设置方式进行举例说明。
例如，如图7b所示，振动片32可以包括四个第一质量块322。每个第一质量块322位于下表面C2的一个角。
或者，又例如，如图7c所示，振动片32可以包括多个(例如大于四个)第一质量块322。多个第一质量块322绕下表面C2的边缘一圈设置。
需要说明的是，当振动片32包括多个第一质量块322时，在本申请的一些实施例中，可以根据振动片32的形变形式、形变程度，对位置不同的第一质量块322的材质、厚度以及质量等参数进行设置。
例如，在振动片32振动时，振幅不同位置处的第一质量块322的材质、厚度或者质量可以不相同。而振幅相同或者相近的位置处的第一质量块322的材质、厚度或者质量可以相同。本领域技术人员可以根据振动片32的形变形式、形变程度对多个第一质量块322的上述各个参数进行设置，并结合受力分析，得出更有利于驱动显示模组10振动的设置方式。
又或者，如图7d所示，振动片32可以包括一个第一质量块322。该第一质量块322为绕振子31的周边一圈设置的，首尾相接的框架结构。
在本申请的一些可能的实现方式中，构成上述第一质量块322的材料可以为金属单质材料或者金属合金材料。在此情况下，如图7a所示，由于第一质量块322设置于振动片32伸出振子31的部分，因此在振动片32发生形变的过程中，第一质量块322可以产生一个振动加速度，该加速度通过振动片32耦合到显示模组10上，从而可以提高振动片32耦合至显示模组10提供的驱动力，达到提高屏幕发声音量的目的。
需要说明的是，上述仅仅是对第一质量块322在该下表面C2上的设置方式的举例说明，本领域技术人员可以根据在第一质量块322的辅助作用下，振动片32的形变形式、形变程度对驱动显示模组10进行振动的过程进行受力分析，从而得出更有利于驱动显示模组10振动的设置方式。
该第一质量块322在该下表面C2上的其他设置方式在此不再一一赘述，只要能够保证振动片32在形变过程中，能够驱动显示模组10沿垂直于显示模组10上表面A1的方向振动即可。
示例二
本示例中，与示例一相同，振动片32的下表面C2上设置有第一质量块322。其中，振动片32位于振子31和显示模组10之间，振动片32的下表面与振子31的上表面相连接。此外，该振动片32的上表面与显示模组10的下表面A2相连接。第一质量块322的设置方式同上所述，此处不再赘述。
本示例与示例一的不同之处在于，上述显示模组10还包括第一支撑片323。该第一支撑片323位于振动片32与显示模组10之间。
第一支撑片的下表面(即第一支撑片323朝向中框11一侧的表面)与振动片32的上表面相连接。示例的，第一支撑片323的下表面通过第一胶层321a与振动片32的上表面C1相连接。该第一胶层321a的设置方式同上所述，此处不再赘述。
此外，第一支撑片323的上表面(即第一支撑片323朝向显示模组10一侧的表面)与显示模组10的下表面A2相连接。示例的，第一支撑片323可以通过第三胶层321c与显示模组10下表面A2相连接。上述第三胶层321c的材料与第一胶层321a材料的设置方式可以相同，此处不再赘述。
此外，如图8a所示，第一支撑片323的上表面(即第一支撑片323与显示模组10相接触的表面)的面积，大于振动片32的上表面的面积。
这样一来，一方面，由于第一支撑片323为片状结构，其与显示模组10的接触面积较大。因此，通过将上述第一支撑片323的上、下表面分别与显示模组10和上述振动片32相接触，可以提高振动片32与显示模组10的接触面积，使得上述振动片32以及振子31振动过程中，向显示模组10提供的驱动力能够更加均匀的施加至显示模组10。减小显示模组10在振动过程中出现损坏的几率。
另一方面，通过第一支撑片323，还可以扩大显示模组10形变区域面积，使得振动片32以及振子31振动过程中，向显示模组10提供的驱动力能够更多的传递至显示模组10。从而增加振动片32以及振子31驱动显示模组10振动的效率，降低功耗，提升屏幕发声的效果。
由上述可知，对于示例一、示例二的方案而言，振动片32中的振动片32位于振子31和显示模组10之间，且与振子31和显示模组10相连接。在此情况下，可以将由振动片32和振子31构成的振动结构设置于容纳空间20(如图4a所示)的中心位置，即由振动片32和振子31构成的振动结构与显示模组10的中心位置相连接。
这样一来，在振子31和振动片32的共同驱动下，驱动力可以直接作用至作为振膜的显示模组10的中心位置，从而能够增加整个显示模组10的振幅。使得显示模组10作为扬声器，在实现屏幕发声的过程中，在传输低频声音信号和高频声音信号时，均可以获得较大的声音。
由上述可知，相对于示例一而言，本示例中，振动片32与显示模组10之间还设置有第一支撑片323。在此情况下，在本示例的一些实施例中，为了减小显示模组10与中框11之间的间隙H，振动片32的厚度与第一支撑片323的厚度之和可以在0.2mm～2mm的范围内。并且，为了提高振动片32的驱动力，该振动片32的杨氏模量可以与第一支撑片323的杨氏模量相同。
在本示例的另一些实施例中，振子31可以包括如图8b所示的，能够相对运动的第一磁体311和第二磁体312。在此情况下，为了减小显示模组10与中框11之间的间隙H，可以在中框11上设置安装孔122，第二磁体312可以穿过上述安装孔122，并通过支架123固定于中框的第二表面B2。由于第二磁体312的一部分可以位于安装孔122内，从而可以减小振子31在容纳空间20中的占用空间，以减小显示模组10与中框11之间的间隙H，达到减小显示终端01厚度的目的。
示例三
在示例与示例一和示例二不同，如图9a所示，振子31的上表面与显示模组10的 下表面A2相连接，振子31的下表面与中框11相连接。此外，振子31在显示模组10的下表面A2上垂直投影的区域，与振动片32在显示模组10的下表面A2上垂直投影的区域不重叠。
在此情况下，振动片32可以位于振子31的周边。并且，该振动片32与振子31之间具有第二间隙L2。本申请实施例对第二间隙L2的大小不做限定，只要能够保证在振动片32和振子31振动的过程中，振动片32与振子31彼此之间的振动不会造成阻碍即可。
构成该振动片32的材料同上所述，此处不再赘述。本示例，相对于示例一与示例二中，将振动片32与振子31层叠方式的方案而言，通过将振动片32设置于振子31的周边，可以减小显示模组10与中框11之间的间隙H，达到减小显示终端01厚度的目的。
在本示例的一种可能实现的方案中，如图9b所示，振动片32通过第一胶层321a与显示模组10下表面A2相连接。该第一胶层321a的薄膜层图案的设置方式，以及构成第一胶层321a的材料同上所述，此处不再赘述。
或者，在本示例的另一种可能实现的方案中，上述显示模组10还包括如图9c所示，第一支撑片323。该第一支撑片323位于振动片32与显示模组10之间。第一支撑片323通过第一胶层321a与振动片32的上表面C1相连接。此外，第一支撑片323通过第三胶层321c与显示模组10下表面A2相连接。
此外，如图9c所示，显示终端01还包括第二支撑片324。该第二支撑片324位于振子31与显示模组10之间。第二支撑片324通过第四胶层321d与显示模组10下表面A2相连接。并且，第二支撑片324还通过第五胶层321e和振子31的上表面相连接。
需要说明的是，第四胶层321d和第五胶层321e的材料同上所述，此处不再赘述。第四胶层321d和第五胶层321e可以将振子31的振动耦合至显示模组10，该第四胶层321d和第五胶层321e可以为分别位于第二支撑片324上、振子31上表面的一整层薄膜层。
此外，该第二支撑片324上表面(即第二支撑片324与显示模组10相接触的表面)的面积，大于振子31上表面的面积。在此情况下，第二支撑片324的一部分通过第五胶层321e与振子31相连接，另一部分伸出振子31，位于该振子31的周边。
这样一来，一方面，由于第二支撑片324为片状结构，其与显示模组10的接触面积较大。因此，通过将上述第二支撑片324的上、下表面分别与显示模组10和上述振子31相接触，可以提高振子31与显示模组10的接触面积，使得上述振子31振动过程中，向显示模组10提供的驱动力能够更加均匀的施加至显示模组10。减小显示模组10在振动过程中出现损坏的几率。
另一方面，通过第二支撑片324，还可以扩大显示模组10形变区域面积，使得振子31振动过程中，向显示模组10提供的驱动力能够更多的传递至显示模组10。从而增加振子31驱动显示模组10振动的效率，降低功耗，提升屏幕发声的效果。
需要说明的是，上述第一支撑片323和第二支撑片324可以为金属薄片。构成该第一支撑片323和第二支撑片324的材料可以为金属单质材料，或者金属合金材料。
在此基础上，如图9d所示，显示终端01还包括设置于第二支撑片324下表面的至少一个第二质量块325。振子31在第二支撑片324的下表面上垂直投影的区域，与第二质量块325在第二支撑片324的下表面上垂直投影的区域不重叠。在此情况下，该第二质量块325位于振子31的周边，且与振子31之间具有第三间隙L3。
需要说明的是，本申请对该第三间隙L3的大小不做限定，只要能够保证振子31在振动的过程中，第二质量块325与振子31不会发生接触，而影响该振子31的振动即可。
此外，至少一个第二质量块325在第二支撑片324下表面的设置方式以及技术效果，与第一质量块322的设置方式同理可得，此处不再赘述。本领域技术人员可以对第二支撑片324将振子31的驱动力传递至显示模组10的过程，进行振动的过程进行受力分析，从而得出更有利于驱动显示模组10振动的设置方式。
在此情况下，由于第二质量块325设置于第二支撑片324伸出振子31的部分，因此在第二支撑片324将振子31的驱动力传递至显示模组10的过程中第二质量块325可以产生一个振动加速度，该加速度通过第二支撑片324耦合到显示模组10上，从而可以提高第二支撑片324耦合至显示模组10提供的驱动力，达到提高屏幕发声音量的目的。
其中，第二质量块325可以采用金属材料构成。
此外，为了提高振动片32耦合至显示模组10提供的驱动力，在本申请的一些实施例中，显示终端01还包括设置于振动片32的下表面C2上的至少一个，如图9e所示的第三质量块326。
与上述第一质量块322的设置方式同理可得，该振动片32可以包括四个第三质量块326。每个第三质量块326位于下表面C2的一个角。或者，又例如，振动片32可以包括多个(例如大于四个)第三质量块326。多个第三质量块326绕下表面C2的边缘一圈设置。又或者，振动片32可以包括一个第三质量块326。该第三质量块326为一圈首尾相接的框架结构。
又或者，如图9f所示，振动片32可以包括一个第三质量块326。该第三质量块326位于振动片32的下表面C2的中心位置。
在本申请的一些可能的实现方式中，构成上述第三质量块326的材料可以为金属单质材料或者金属合金材料。在此情况下，如图9e所示，由于第三质量块326设置于振动片32的下表面C上，因此在振动片32发生形变的过程中，第三质量块326可以产生一个振动加速度，该加速度通过振动片32耦合到显示模组10上，从而可以提高振动片32耦合至显示模组10提供的驱动力，达到提高屏幕发声音量的目的。
需要说明的是，上述仅仅是对第三质量块326在该下表面C2上的设置方式的举例说明，本领域技术人员可以根据在第三质量块326的辅助作用下，振动片32的形变形式、形变程度对驱动显示模组10进行振动的过程进行受力分析，从而得出更有利于驱动显示模组10振动的设置方式。
该第三质量块326在该下表面C2上的其他设置方式在此不再一一赘述，只要能够保证振动片32在形变过程中，能够驱动显示模组10沿垂直于显示模组10下表面A2的方向振动即可。
由上述可知，对于示例三的方案而言，如图9a所示，振动片32位于振子31的周边。可以将振子31(或振动片32)设置于容纳空间20(如图4a所示)的中心位置，从而与显示模组10的中心位置相连接。将振动片32(或振子31)设置于容纳空间20的边缘位置，该部分可以作为手机的听筒。
这样一来，与显示模组10的中心位置相连接的振子31(或振动片32)在振动时，提供的驱动力可以直接作用至作为振膜的显示模组10的中心位置，从而能够增加整个显示模组10的振幅。使得显示模组10作为扬声器，在实现屏幕发声的过程中，传输低频声音信号和高频声音信号时，均可以获得较大的声音。
此外，靠近容纳空间20的边缘位置的振动片32(或振子31)在振动时，可以增大显示模组10在边缘位置的振幅。使得显示模组10作为听筒，在实现屏幕发声的过程中，传输高频声音信号时，可以获得较大的声音。
对于上述任意一种示例，由上述可知，显示模组10与中框11之间设置有如图9d所示的粘接层111。在本申请的一种可能的实现方式中，上述粘接层111的厚度F可以为0.2mm～0.5mm。该粘接层111的杨氏模量可以为10Mpa～80Mpa。
当粘接层111的厚度F小于0.2mm时，粘接层111的粘接力太小，从而不利于将显示模组10与中框11稳固的粘接在一起。
在粘接层111的厚度F在0.2mm～0.5mm的范围内的情况下，粘接层111能够将显示模组10与中框11稳固的粘接在一起，此外，在上述厚度范围内，粘接层111的厚度F越大，粘接层111质地越软，显示模组10更容易在受力后发生振动，有利于提高屏幕发声的音量。
示例的，该粘接层111的厚度F可以为0.2mm、0.3mm、0.4mm、0.5mm。
当粘接层111的厚度F大于0.5mm时，该粘接层111质地太软，从而在显示模组10振动的过程中，导致显示终端01的边界条件越软，降低整个显示终端01的可靠性，导致显示屏101容易出现碎屏的风险。
此外，当粘接层111的杨氏模量可以在10Mpa～80Mpa的范围内时，该粘接层111的杨氏模量越小，显示终端01的边界条件越软，显示模组10越容易振动，从而能够有效增大屏幕发声的声音。
由上述可知，在上述显示终端01中，振子31和振动片32在分别接收到音频数字处理器300输出的驱动信号后，可以沿垂直于显示模组10下表面A2的方向，驱动显示模组10振动，以实现屏幕发声。以下对振子31和振动片32如何接收到音频数字处理器300输出的驱动信号的实现方式进行举例说明。
示例四
本示例中，显示终端01包括如图10所示的音频数字处理器300、第一功率放大器301以及滤波器302。
该音频数字处理器300的输出端与第一功率放大器301的输入端相耦接。该音频数字处理器300用于向第一功率放大器301输出音频信号。
在本申请的一些实施例中，上述音频数字处理器300包括音频信号接收模块40和音效运算模块41。其中，音频信号接收模块40可以与图1所示的设置于PCB上的CPU电连接，以接收该CPU输出的音频信号。
此外，音效运算模块41用于对音频信号接收模块40输出的音频信号的频段进行调整，以达到音频效果调试的目的。
例如，当音频信号接收模块40输出的音频信号出现低频不足时，音效运算模块41可以抬高音频信号接收模块40输出的低频部分的频率。或者，当音频信号接收模块40输出的音频信号出现高频较高时，音效运算模块41可以压低音频信号接收模块40输出的高频部分的频率。从而使得音频数字处理器300输出的音频，能够满足第一功率放大器301待处理的音频信号的要求。
需要说明的是，CPU输出的音频信号可以为显示终端01自身播放声音，例如音乐或视频时的音频信号。或者，上述音频信号可以为显示终端01在进行语音通话时，通过听筒传输至CPU的声音。通常人耳能够接收到的音频信号的频率范围为200Hz～20KHz。所以上述CPU输出的音频信号的频率可以在200Hz～20KHz的范围内。
在此基础上，第一功率放大器301的第一输出端O1与滤波器302相耦接。该第一功率放大器301的第二输出端O2与振子31相耦接。该第一功率放大器301用于对经过音效运算模块41处理后的音频信号进行功率放大处理，从而能够驱动振子31在接收到第一功率放大器301输出的音频信号(为几百KHz，例如400KHz)后，进行振动，且该振子31的振动相位为第一相位。在本申请的一些实施例中，上述第一功率放大器301可以采用输出频率较高的class H型的智能(smart)功放(power amplifier，PA)。
由上述可知，在振子31包括第一磁体311和第二磁体312时，上述第一磁体311或第二磁体312可以为线圈。在此情况下，当振子31接收到第一功率放大器301输出的400KHz的音频信号后，上述线圈可以作为电感，自身将一部分音频滤除，并在滤除的后音频信号的作用下，驱动主显示模组10发出频率在200Hz～20KHz范围内的声音。
此外，由上述可知，振动片32主要包括振动片32，该振动片32可以相当于一个电容。因此当直接将能够输出几百KHz的第一功率放大器301与振动片32相耦接，会导致该振动片32出现短路。所以需要在第一功率放大器301和振动片32之间耦接滤波器302。
滤波器302用于对经过音效运算模块41处理后的音频信号进行滤波处理。例如，第一功率放大器301输出的400KHz的音频信号中一部分音频滤除，使得振动片32在滤除后的音频信号的控制下以上述第一相位振动，并驱动显示模组10发出频率在200Hz～20KHz范围内的声音。
为了方便说明，可以将200Hz～20KHz的范围中，200Hz～4KHz的音频信号称为低频信号，4KHz～20KHz之间的信号称为中、高频信号。其中，本申请对低频、中、高频信号的划分仅仅是为了举例说明，并不是对低频、中、高频信号的限定。
基于此，以下对振子31和振动片32根据CPU输出的音频信号的频率，驱动显示模组10进行屏幕发声的过程进行说明。
例如，当图10中的CPU输出1KHz的低频信号时，该低频信号经过音频数字处理器300、第一功率放大器301后，该第一功率放大器301输出几百KHz的音频信号施加至振子31，以驱动振子31振动。振子31作为电感将几百KHz的音频信号中的一 部分音频信号滤除，并在剩余的1KHz音频信号作用下振动。
此外，第一功率放大器301输出几百KHz的音频信号经过滤波器302后，将几百KHz的音频信号中的一部分音频信号滤除，并将剩余的1KHz音频信号施加至振动片32。
由于振子31和振动片32并联，因此振子31和振动片32上施加的电压相同。基于此，在1KHz的低频信号的驱动下，振子31中线圈的阻抗较小(例如为8欧姆)，因此流过该线圈的电流较大。而作为电容的振动片32的阻抗较大(例如为200欧姆)，流过振动片32的电流较小。此时，振子31和振动片32同时振动时，由于振动相位相同，所以振子31和振动片32的振动可以叠加，且振子31作为主要的驱动源驱动显示模组10进行振动，以发出1KHz的低频信号。
或者，当图10中的CPU输出10KHz的高频信号时，该高频信号经过音频数字处理器300、第一功率放大器301后，该第一功率放大器301输出几百KHz的音频信号施加至振子31，以驱动振子31振动。振子31作为电感将几百KHz的音频信号中的一部分音频信号滤除，并在剩余的10KHz音频信号作用下振动。
此外，第一功率放大器301输出几百KHz的音频信号经过滤波器302后，将几百KHz的音频信号中的一部分音频信号滤除，并将剩余的10KHz音频信号施加至振动片32。
由于振子31和振动片32并联，因此振子31和振动片32上施加的电压相同。基于此，在10KHz的高频信号的驱动下，振子31中线圈的阻抗较大(例如为40欧姆)，因此流过该线圈的电流较小。而作为电容的振动片32的阻抗较小(例如为2欧姆)，流过振动片32的电流较大。此时，振子31和振动片32同时振动时，振子31和振动片32的振动可以叠加，且振动片32可以作为主要的驱动源驱动显示模组10进行振动，以发出10KHz的高频信号，从而解决屏幕发出高频信号时音量较小的问题。
示例五
本示例中，显示终端01包括如图11a所示的音频数字处理器300、第一功率放大器301、第二功率放大器303。第一功率放大器301的输出频率大于第二功率放大器303的输出频率。
示例的，该第一功率放大器301可以为上述class H型的smart PA。第二功率放大器303可以为AB型的smart PA。
该音频数字处理器300的输出端与第一功率放大器301的输入端、第二功率放大器301相耦接。音频数字处理器300用于向第一功率放大器301、第二功率放大器303输出上述音频信号。
其中，音频数字处理器300的结构与示例四相同，此处不再赘述。
此外，第一功率放大器301的输出端与振子31相耦接。该第一功率放大器301用于对音频数字处理器300输出的音频信号进行放大处理，以驱动振子31振动。
第二功率放大器303的输出端与振动片32相耦接，第二功率放大器303用于对音频数字处理器300输出的音频信号进行放大处理，使得振动片32的振动相位为第一相位。
由于第二功率放大器303输出频率较低，因此在振动片32包括振动片32的情况 下，第二功率放大器303输出的信号，可以驱动振动片32进行振动，且避免振动片32发生短路。
此外，由上述可知，显示终端01可以包括多个振动片，例如如图11b所示的振动片32a、振动片32b……。基于此，在本申请的一些实施例中，显示终端01可以如图11b所示包括多个第二功率放大器，例如第二功率放大器303a、第二功率放大器303b……。每个第二功率放大器303与一个振动片32相耦接。
这样一来，每个振动片32可以通过一个第二功率放大器303单独进行控制。当屏幕发声需要较大的音量时，可以使得每个第二功率放大器303驱动与其耦接的一个振动片32振动。在此情况下，所有振动片32均向显示模组10提供驱动力，从而可以提高显示模组10振动的频率，达到提高屏幕发声音量的目的。或者，当屏幕发声需要较小的音量时，可以使得部分第二功率放大器303驱动与其耦接的一个振动片32振动。在此情况下，只有部分振动片32向显示模组10提供驱动力，从而使得屏幕发声音量不会太大。
或者，在本申请的另一些实施例中，显示终端01可以如图11c所示包括一个第二功率放大器303，以及与该第二功率放大器303相耦接的多个振动片，例如振动片32a、振动片32b……。这样一来，可以通过一个第二功率放大器303同时控制多个振动片进行振动。从而可以简化显示终端01的电路结构。
需要说明的是，振动片的标识“32”后的得字母“a”、“b”，仅仅是为了对不同振动片进行区分，该字母对振动片的结构不构成限定。此外，第二功率放大器的标识“303”后的得字母“a”、“b”，仅仅是为了对不同第二功率放大器进行区分，该字母对第二功率放大器的结构不构成限定。
此外，在显示终端01还包括如图11d所示的动圈扬声器33的情况下，该显示终端01可以包括与音频数字处理器300和动圈扬声器33相耦接的第三功率放大器304。该第三功率放大器304可以为上述class H型的smart PA。
这样一来，在音频数字处理器300输出音频信号后，在第一功率放大器301、第二功率放大器303的分别控制下振子31、振动片32共同驱动显示模组10进行振动，以实现屏幕发声。而第三功率放大器304控制动圈扬声器发出声音信号，从而可以使得显示终端01能够实现多声道发声。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (15)

  1. 一种显示终端，其特征在于，包括：
    中框；
    显示模组，与所述中框相连接，且与所述中框之间形成一容纳空间；
    振子，其至少一部分设置于所述容纳空间中；所述振子与所述显示模组或与所述中框相连接；
    至少一个振动片，位于所述容纳空间中；所述振动片的上表面与所述显示模组的下表面相连接；所述振动片的下表面朝向所述中框
    在垂直于所述振动片的上表面的方向上，所述振子和所述振动片用于驱动所述显示模组上、下振动。
  2. 根据权利要求1所述的显示终端，其特征在于，所述显示终端还包括第一支撑片；
    所述第一支撑片位于所述振动片与所述显示模组之间；所述第一支撑片的上表面所述显示模组的下表面相连接，所述第一支撑片的下表面与所述振动片的上表面相连接；
    所述第一支撑片的上表面的面积，大于所述振动片的上表面的面积。
  3. 根据权利要求1或2所述的显示终端，其特征在于，
    所述振动片位于所述振子和所述显示模组之间，所述振动片的下表面与所述振子的上表面相连接；振子的下表面与中框相连接。
  4. 根据权利要求3所述的显示终端，其特征在于，所述振动片的上表面的面积，大于与所述振子的上表面的面积。
  5. 根据权利要求4所述的显示终端，其特征在于，所述显示终端还包括至少一个第一质量块；所述第一质量块设置于振动片的下表面；
    所述振子在所述振动片的下表面上垂直投影的区域，与所述第一质量块在所述振动片的下表面上垂直投影的区域不重叠。
  6. 根据权利要求1或2所述的显示终端，其特征在于，
    所述振子的上表面与显示模组的下表面相连接，所述振子的下表面与中框相连接；
    所述振子在所述显示模组的下表面上垂直投影的区域，与所述振动片在所述显示模组的下表面上垂直投影的区域不重叠。
  7. 根据权利要求6所述的显示终端，其特征在于，所述显示终端还包括第二支撑片；
    所述第二支撑片位于所述振子与所述显示模组之间，所述第二支撑片的上表面与所述显示模组的下表面相连接，所述第二支撑片的下表面与所述振子的上表面相连接；
    所述第二支撑片的上表面的面积，大于所述振子的上表面的面积。
  8. 根据权利要求7所述的显示终端，其特征在于，所述显示终端还包括至少一个第二质量块；所述第二质量块设置于所述第二支撑片的下表面；
    所述振子在所述第二支撑片的下表面上垂直投影的区域，与所述第二质量块在所述第二支撑片的下表面上垂直投影的区域不重叠。
  9. 根据权利要求8所述的显示终端，其特征在于，所述显示终端还包括至少一个 第三质量块；所述第三质量块位于所述振动片的下表面。
  10. 根据权利要求1所述的显示终端，其特征在于，所述显示终端还包括位于所述振动片的上表面上的第一胶层；
    所述第一胶层沿所述振动片上表面的边缘设置。
  11. 根据权利要求1所述的显示终端，其特征在于，所述振动片的厚度为0.2mm～2mm。
  12. 根据权利要求1所述的显示终端，其特征在于，所述显示模组与中框之间设置有粘接层；所述粘接层的厚度0.2mm～0.5mm，所述粘接层的杨氏模量为10Mpa～80Mpa。
  13. 根据权利要求1所述的显示终端，其特征在于，所述振子包括第一磁体和第二磁体；所述第一磁体与所述显示模组相连接，所述第二磁体与所述中框相连接。
  14. 根据权利要求1所述的显示终端，其特征在于，所述显示终端包括音频数字处理器、第一功率放大器、滤波器；
    所述音频数字处理器的输出端与所述第一功率放大器的输入端相耦接；所述音频数字处理器用于向所述第一功率放大器输出音频信号；
    所述第一功率放大器的第一输出端与所述滤波器相耦接，所述第一功率放大器的第二输出端与所述振子相耦接；所述第一功率放大器用于对所述音频信号进行放大处理，使得所述振子的振动相位为第一相位；
    所述滤波器的输出端与所述振动片相连接，所述滤波器用于对所述音频信号进行滤波处理，使得所述振动片的振动相位为所述第一相位。
  15. 根据权利要求1所述的显示终端，其特征在于，所述显示终端包括音频数字处理器、第一功率放大器、第二功率放大器；所述第一功率放大器的输出频率大于所述的第二功率放大器的输出频率；
    所述音频数字处理器的输出端与所述第一功率放大器的输入端、所述第二功率放大器相耦接；所述音频数字处理器用于向所述第一功率放大器、所述第二功率放大器输出音频信号；
    所述第一功率放大器的输出端与所述振子相耦接；所述第一功率放大器用于对所述音频信号进行放大处理，使得所述振子的振动相位为第一相位；
    所述第二功率放大器的输出端与所述振动片相耦接，所述第二功率放大器用于对所述音频信号进行放大处理，使得所述振动片的振动相位为所述第一相位。
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