Display device

Abstract

The present invention provides a display device, belonging to the field of sound generation technology, which can at least partially solve the problem of inconsistent sound images of existing display devices when generating sound. The display device of the present invention includes: a display panel and an exciter, the exciter is arranged on the non-display surface side of the display panel and is used to drive the display panel to vibrate to generate sound; the display panel is at least divided into a first area and a second area corresponding to the first area; the exciter includes: a first exciter, which is used to drive the first area of the display panel to vibrate to generate sound in a first frequency range; a second exciter, which is used to drive the second area of the display panel to vibrate to generate sound in a second frequency range; the center of the first area and the center of the second area fall within the sound generation center area of the display panel; the sound generation center area is located at the center of the area where the first area and the second area are located.

Description

Technical Field

[0001] The present invention belongs to the technical field of sound-emitting display, and particularly relates to a display device. Background Art

[0002] With the development of various portable electronic devices, such as mobile communication terminals and laptop computers, the demand for display devices applicable thereto is gradually increasing. While the overall display device needs to be thinner and lighter, a sound-emitting device such as a speaker also needs to be provided inside the display device.

[0003] In some technologies, a display device can use "flat panel sound-emitting technology" to set an electromagnetic exciter on the non-display surface side of the display panel. Under the action of the electromagnetic exciter, the display panel emits a flexural wave through vibration, and vibrates back and forth under the action of the flexural wave to achieve sound emission.

[0004] However, in existing sound-emitting display devices, the display panel is usually partitioned, for example, on the left and right sides of the display panel respectively, to excite and emit sounds in different frequency bands respectively. However, this will bring the problem of inconsistent sound image positions, and the user experience is not good. Summary of the Invention

[0005] The present invention at least partially solves the problem of inconsistent sound images of existing display devices when emitting sound, and provides a display device with unified sound images and a relatively high sound pressure level.

[0006] The technical solution adopted to solve the technical problems of the present invention is a display device, including: a display panel and an exciter. The exciter is arranged on the non-display surface side of the display panel and is used to drive the display panel to vibrate to emit sound; the display panel is at least divided into a first area and a second area corresponding to the first area;

[0007] The exciter includes:

[0008] A first exciter, which is used to drive the first area of the display panel to vibrate to emit sound in a first frequency range;

[0009] A second exciter, which is used to drive the second area of the display panel to vibrate to emit sound in a second frequency range;

[0010] The display panel has a sound-emitting center area, which is located in the area where the first area is located; the center of the first area and the center of the second area fall within the sound-emitting center area of the display panel.

[0011] Optionally, the second area surrounds the periphery of the first area;

[0012] The projection of the first exciter on the display panel falls within the area where the projection of the second exciter on the display panel is located;

[0013] Moreover, the first actuator is connected to the display panel in the first area to drive the first area of the display panel to vibrate; the second actuator is connected to the display panel in the second area to drive the second area of the display panel to vibrate.

[0014] Further optionally, the center of the second area overlaps with the center of the first area.

[0015] Optionally, the first actuator and / or the second actuator includes: a T-shaped iron, a magnet, and a coil wound around a bobbin;

[0016] The positive projections of the protruding part of the T-shaped iron and the magnet on the display panel both include a ring shape; and the protruding part of the T-shaped iron and the magnet are sleeved, and the two define an annular hollow space;

[0017] The coil is inserted into the annular hollow space through the bobbin, and one end of the bobbin is fixedly connected to the display substrate.

[0018] Further optionally, the second actuator includes: a T-shaped iron, a magnet, and a coil wound around a bobbin;

[0019] The positive projections of the protruding part of the T-shaped iron and the magnet on the display panel both include a ring shape; and the magnet is sleeved around the protruding part of the T-shaped iron, and the two define an annular hollow space;

[0020] The coil is inserted into the annular hollow space through the bobbin, and one end of the bobbin is fixedly connected to the second area of the display panel.

[0021] The positive projection of the first actuator on the display panel falls within the area restricted by the positive projection of the protruding part of the T-shaped iron of the second actuator on the display panel.

[0022] Further optionally, the first actuator includes: a T-shaped iron, a magnet, and a coil wound around a bobbin;

[0023] The positive projections of the protruding part of the T-shaped iron and the magnet on the display panel both include a ring shape; and the protruding part of the T-shaped iron is sleeved around the magnet, and the two define an annular hollow space;

[0024] The coil is inserted into the annular hollow space through the bobbin, and one end of the bobbin is fixedly connected to the first area of the display panel.

[0025] Optionally, the display panel includes a full-screen panel;

[0026] The display device further includes: a partition sound absorption part, disposed on the non-display surface side of the display panel, for partitioning the display panel into the first area and the second area, and blocking the vibration transmission between the first area and the second area.

[0027] Further optionally, the material of the partition sound absorption part includes: porous sound absorption material or planar sound absorption material.

[0028] Optionally, the area of the first area is smaller than the area of the second area;

[0029] The frequency of the sound emitted from the first area is greater than the frequency of the sound emitted from the second area.

[0030] Optionally, the display panel includes: an OLED display panel or a liquid crystal display panel. Description of the Drawings

[0031] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0032] Figure 1 It is a schematic plan view of a display device according to an embodiment of the present invention;

[0033] Figure 2 It is a schematic plan partition view of a display device according to an embodiment of the present invention;

[0034] Figure 3 It is a schematic cross-sectional view of a display device according to an embodiment of the present invention. Detailed Description of the Embodiments

[0035] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0036] In the present invention, the two structures being "arranged on the same layer" means that they are formed by the same material layer. Therefore, they are in the same layer in the stacking relationship, but it does not mean that the distances between them and the substrate are equal, nor does it mean that the other layer structures between them and the substrate are exactly the same.

[0037] The present invention will be described in more detail below with reference to the drawings. In each drawing, the same elements are denoted by similar reference numerals. For clarity, the various parts in the drawings are not drawn to scale. In addition, some well-known parts may not be shown in the drawings.

[0038] Numerous specific details of the present invention are described hereinafter, such as the structure, materials, dimensions, processing techniques and technologies of components, in order to understand the present invention more clearly. However, as those skilled in the art can understand, the present invention can be implemented without these specific details.

[0039] In addition, terms such as "first", "second", "B", "(a)", "(b)" or the like may be used when describing components of the present invention. Each of these terms is not used to define the nature, order or sequence of the corresponding component, but is only used to distinguish the corresponding component from other components. In the case where a particular structural element is described as "connected", "joined" or "contacted" with another structural element, it should be interpreted that, in addition to the particular structural element being directly connected or directly contacting the other structural element, the other structural element may also be "connected", "joined" or "contacted" with a plurality of structural elements.

[0040] As used herein, the term "display device" includes not only a display device in a narrow sense that includes a display panel 1 and a driving unit for driving the display panel 1 (such as a liquid crystal module (LCM) or an OLED module), but also an electronic unit device or unit device that includes an LCM, an OLED module, etc. (such as a notebook computer, a television, a computer monitor, a device display, for example, a display device in an automotive display or other types of vehicle displays, a mobile electronic device including a smart phone or an electronic pad, etc.). That is to say, the display device used herein includes not only a display device in a narrow sense (such as an LCM or an OLED module), but also a unit device that is an application product or a final consumer device in which the display device is applied.

[0041] However, in some cases, an LCM or an OLED module including the display panel 1 and its driving unit may be referred to as a "display device" in a narrow sense, and an electronic device that is a finished product or a final product including the LCM or the OLED module may be separately referred to as a "unit device" or a "unit equipment". For example, the display device in a narrow sense may include an LCD or an OLED display panel 1 and a source PCB that is a controller for driving it, and the unit device may further include a unit PCB, which is a unit controller that is electrically connected to the source PCB to control the entire unit device or the entire unit equipment.

[0042] An embodiment of the present invention provides a display device, including: a display panel 1 and an exciter, the exciter is disposed on the non-display surface side of the display panel 1 and is used to drive the display panel 1 to vibrate to generate sound.

[0043] In this display device, the display panel 1 is used to display videos or image content. At the same time, the display panel 1 vibrates under the drive of an exciter to generate bending waves and thus produce sound. That is to say, the display panel 1 provided in this embodiment can be used for both display and sound production instead of a speaker. Therefore, there is no need to additionally provide a speaker in the display device, nor to reserve a position for the installation of the speaker, nor does the user need to externally connect a speaker, which is conducive to realizing a thinner and lighter design of the display device.

[0044] Among them, the display panel 1 can include all forms of display panels 1, such as liquid crystal display (LCD) panels, organic light-emitting diode (OLED) display panels 1, etc. The display panel 1 is not limited to a specific display panel 1 technology, as long as the display panel 1 can generate sound waves or audio output due to the vibration generated by the exciter.

[0045] Particularly, in the display device provided in this embodiment, the display panel 1 is at least divided into a first area 11 and a second area 12 corresponding to the first area 11; the centers of both the first area 11 and the second area 12 fall within the sound-producing center area A of the display panel 1, and this sound-producing center area A is located in the area where the first area is located. The exciter includes: a first exciter 2 and a second exciter 3. The first exciter 2 is used to drive the display panel 1 in the first area 11 to vibrate to produce sound in a first frequency range; the second exciter 3 is used to drive the display panel 1 in the second area 12 to vibrate to produce sound in a second frequency range.

[0046] Among them, the area where the first area 11 is located refers to the smallest-sized standard closed area that can completely cover the first area 11, and the shape of this standard closed area can include a circle, a rectangle, etc.; the area where the second area 12 is located refers to the smallest-sized standard closed area that can completely cover the second area 12. The sound-producing center area A refers to the area where the ideal center point of the display panel 1 is located when producing sound. The size scale of this sound-producing area can be determined according to actual requirements and implementation levels. It should be noted that the sound-producing center area A is located in the area where the first area 11 is located, and it may overlap with the first area 11 or may not overlap with the first area 11, which is determined according to the specific pattern shape of the first area 11.

[0047] In the display device provided in this embodiment, the centers of the first region 11 and the second region 12 both fall within the sound-emitting center region A of the display panel 1, and the sound-emitting center region A is located at the center of the region where the first region 11 and the second region 12 are located. On this basis, the center points of the sound emitted by the display panel 1 in the first region 11 and the center points of the sound emitted by the display panel 1 in the second region 12 are both within the sound-emitting center region A. It can be understood that when the two center points are closer, or even coincide, the sound image positions of the sound emitted by the first region 11 and the sound emitted by the second region 12 are more unified. In this embodiment, through the design of the shapes and relative positions of the first region 11 and the second region 12, the centers of both can be located in the sound-emitting center region A, so that the sound image positions of the sound emitted by the first region 11 and the sound emitted by the second region 12 are kept as consistent as possible, thereby solving the problem in the prior art that the sound image positions of the sound emitted by different regions are far apart and not unified, resulting in a relatively serious sense of sound splitting, which affects auditory localization and judgment.

[0048] The first frequency range and the second frequency range can be the same or different, and neither affects the sound emission of the display panel 1. Among them, when the first frequency range and the second frequency range are different, the display panel 1 in this embodiment has a better sound emission effect than the display panel 1 in the prior art. Specifically, if the frequency ranges of the sound emitted by the first region 11 and the sound emitted by the second region 12 are different and the sound image positions are not unified, there will be a relatively serious sense of splitting of sounds with different frequencies, which affects the user's auditory localization and judgment of the sound. However, the display panel 1 provided in this embodiment can better solve the above technical problems and effectively improve the user's auditory experience.

[0049] In some embodiments, the first exciter 2 and / or the second exciter 3 includes: a T-iron 01, a magnet 02, and a coil 03 wound around a bobbin; the projections of the protruding part of the T-iron 01 and the magnet 02 on the display panel 1 both include a ring shape; and the protruding part of the T-iron 01 and the magnet 02 are sleeved, and the two define a ring-shaped hollow space; the coil 03 is inserted into the ring-shaped hollow space through the bobbin, and one end of the bobbin is fixedly connected to the display substrate.

[0050] Refer to Figure 3, the T-iron is a T-shaped magnet, which may include a bottom and a protruding portion located above the bottom (close to the display panel side). The bottom of the T-iron is parallel to the plane where the display panel is located, and the protruding portion is perpendicular to the plane where the bottom is located. A current for generating sound is applied to the coil 03. When the current for generating sound is applied to the coil 03, a magnetic field is generated around the coil 03. At the same time, in the protruding portion of the T-iron 01 and the magnet 02, one is used as the N pole and the other is used as the S pole to form an external magnetic field. The magnetic field generated by the coil 03 and the external magnetic field generate a force to move the coil 03, that is, generate a force to move the coil holder. The coil holder moves, and the display panel 1 connected to the end of the coil holder vibrates. When the application of the current is interrupted, or when the current is applied in the opposite direction, a force to move the coil holder is generated based on a similar principle, and the display panel 1 vibrates in the opposite direction. As described above, the display panel 1 vibrates upward or downward according to the direction and amplitude of the current applied to the coil 03, thereby generating sound waves.

[0051] Specifically, in some embodiments, the second region 12 surrounds the periphery of the first region 11; the projection of the first exciter 2 on the display panel falls within the region where the projection of the second exciter 3 on the display panel is located; and the first exciter 2 is connected to the display panel 1 of the first region 11 to drive the display panel 1 of the first region 11 to vibrate; the second exciter 3 is connected to the display panel 1 of the second region 12 to drive the display panel 1 of the first region 11 to vibrate. The first exciter 2 is located in the first region 11 of the display panel 1, and the second exciter 3 is located in the second region 12 of the display panel 1.

[0052] Further, in some embodiments, the center of the second region 12 overlaps with the center of the first region 11. Refer to Figure 1 and Figure 2 , the center of the second region 12 is located in the region where the first region 11 is located and overlaps with the center of the first region 11. Among them, the shape of the first region 11 may include a ring shape, and the shape of the second region 12 may also include a ring shape. It can be understood that the shape of the first region 11 only needs to be annular as a whole, and the specific local shape is not limited. At the same time, the shape of the second region 12 may also be other shapes, which are not specifically limited in this embodiment.

[0053] In some embodiments, the second exciter 3 includes: a T-iron 01, a magnet 02, and a coil 03 wound around a coil holder; the positive projections of the protruding portion of the T-iron 01 and the magnet 02 on the display panel 1 both include a ring shape; and the magnet 02 is sleeved outside the protruding portion of the T-iron 01, and the protruding portion of the T-iron 01 and the magnet 02 define an annular hollow space; the coil 03 is inserted into the annular hollow space through the coil holder, and one end of the coil holder is fixedly connected to the second region 12 of the display panel 1; the positive projection of the first exciter 2 on the display panel 1 falls within the region restricted by the positive projection of the protruding portion of the T-iron 01 of the second exciter 3 on the display panel 1. Refer to Figure 1 andFigure 3 The protruding part of the second exciter 3, the magnet 02 and the coil 03 can be of an annular structure. At this time, the second exciter 3 as a whole is of an annular structure. The orthographic projection of the first exciter 2 on the display panel 1 falls within the area restricted by the orthographic projection of the protruding part of the yoke 01 of the second exciter 3 on the display panel 1. That is to say, the first exciter 2 can be arranged in the internal hollow space of the second exciter 3, so that the first exciter 2 and the second exciter 3 overlap in the thickness direction of the display device, which helps to make the display device thinner and lighter. It should be noted that the protruding part of the yoke 01 can also be sleeved around the periphery of the magnet 02 as long as it does not affect its operation. Here, it should be noted that in this embodiment, the protruding part of the second exciter 3 and the magnet 02 as a whole can be of an annular structure. The overall shape of this annular structure is not limited to a circle, and can also be a rectangle, a polygon, or other closed figures. This will not be elaborated in this embodiment.

[0054] In some embodiments, the first exciter 2 includes: a yoke 01, a magnet 02, and a coil 03 wound on a bobbin; the orthographic projections of the protruding part of the yoke 01 and the magnet 02 on the display panel 1 both include an annulus; and the protruding part of the yoke 01 is sleeved around the periphery of the magnet 02, and the two define an annular hollow space; the coil 03 is inserted into the annular hollow space through the bobbin, and one end of the bobbin is fixedly connected to the first area 11 of the display panel 1. Refer to Figure 3 The protruding part of the first exciter 2, the magnet 02 and the coil 03 as a whole can also be of an annular structure. Its structure is similar to that of the second exciter 3. Among them, when the protruding part of the yoke 01 is sleeved around the periphery of the magnet 02, the magnet 02 can be of an annular structure or a columnar structure.

[0055] In other embodiments, in the first exciter 2, the magnet 02 can be sleeved around the protruding part of the yoke 01, and the two define an annular hollow space; the coil 03 is inserted into the annular hollow space through the bobbin.

[0056] In the embodiment of the present invention, when the first exciter 2 and the second exciter 3 are the same type of annular exciters as described above, and the area where the first exciter 2 is located is within the area where the second exciter 3 is located, the yoke 01 of the first exciter 2 and the yoke 01 of the second exciter 3 can be of an integrally formed structure for easy preparation.

[0057] Or, in other embodiments, the first exciter 2 can also be other types of exciters as long as it can excite the display panel 1 and the housing. This is not particularly limited in this embodiment.

[0058] Optionally, in some embodiments, the display panel 1 includes a full-screen panel; the display device further includes: a partition sound absorption part 4, disposed on the non-display surface side of the display panel 1, for partitioning the display panel 1 into a first area 11 and a second area 12, and blocking the vibration transmission between the first area 11 and the second area 12. Refer to Figure 2 , in this embodiment, when the display panel 1 is a full-screen panel, the partition sound absorption part 4 can be disposed in the interval area between the first area 11 and the second area 12. When the excitation frequencies of the first exciter 2 and the second exciter 3 are different during the operation of the display device, the partition sound absorption part 4 can be used to block the vibration transmission between the first area 11 and the second area 12, thereby preventing the display panels 1 in the first area 11 and the second area 12 from affecting each other during vibration and ensuring high-quality and effective sound production. Specifically, refer to Figure 2 , the partition sound absorption part 4 divides the display panel 1 into the first area 11 and the second area 12. When the display device is operating, the first exciter 2 excites the display panel 1 in the first area 11 to vibrate and emit sound in a first frequency range, and the vibration is absorbed after passing through the partition sound absorption part 4 at the boundary, so as not to affect the display panel 1 in the second area 12; similarly, when the first exciter 2 excites the display panel 1 in the first area 11 to vibrate and emit sound in a first frequency range, the vibration will also be absorbed after passing through the partition sound absorption part 4 at the boundary, so as not to affect the display panel 1 in the first area 11.

[0059] Alternatively, in the embodiments of the present invention, the display panel 1 can also be partitioned by splitting the screen, but splitting the screen will affect the display of the display panel 1 to a certain extent, so it is not the best choice for the best display device.

[0060] Optionally, in some embodiments, the material of the partition sound absorption part 4 includes: porous sound absorption materials, flat sound absorption materials, etc. The porous sound absorption materials have fine pores in the form of small bubbles or fine tubes on the surface and inside. When the air in the fine pores vibrates due to sound waves, friction is generated, so that the sound energy can be converted into heat energy, and the converted heat energy can be absorbed into the porous sound absorption materials. The flat sound absorption materials have a structure that obtains a sound absorption effect by consuming sound energy while vibrating the sound wave vibration plate. The flat sound absorption materials can include flat materials such as plywood, gypsum board, fiber board, asbestos board, etc.

[0061] In this embodiment, the sound emission of the display device is completed under the combined action of the actuator and the display panel 1. Experimental studies have shown that when the excitation frequency of the actuator matches the resonance frequency of the display panel 1, the sound pressure level of the screen sound emission will increase accordingly. Specifically, when the resonance frequency of the display panel 1 is relatively low, the low-frequency effect of the sound frequency response of the display panel 1 is better, and when the resonance frequency of the display panel 1 is relatively high, the high-frequency effect of the sound frequency response of the display panel 1 is better. For example, when the size of the display panel 1 is 168mm * 150mm, the resonance frequency is 287Hz; when the display panel 1 is reduced to 108mm * 80mm, the corresponding first-order resonance frequency increases to 768Hz; when the size of the display panel 1 becomes 68mm * 50mm, the first-order resonance frequency further increases to 2318Hz. That is to say, under the same conditions, the smaller the size of the display panel 1, the higher its resonance frequency, and the more suitable it is for sound emission in the high-frequency band. Therefore, in this embodiment, the sound pressure levels of different frequency bands can be enhanced by matching the display panel 1 and the type of actuator.

[0062] In this embodiment, the screen size and the type of actuator are matched to enhance the sound pressure levels of the low frequency and the medium-high frequency. Optionally, in some embodiments, the area of the first region 11 is smaller than the area of the second region 12; the frequency of the sound emitted by the first region 11 is greater than the frequency of the sound emitted by the second region 12. At this time, each sound-emitting region of the display panel is matched with the sound frequency to enhance the sound emission of the corresponding frequency band. Specifically, the sound in the first frequency range (i.e., the frequency of the sound emitted by the first region 11) may include high-frequency sounds, and the specific frequency may be greater than 4kHz, and the sound in the second frequency range includes medium-low frequency sounds, and the specific frequency may be less than 4kHz. Specifically, when the area size of the display panel 1 is fixed, the resonance frequencies of each sound-emitting region (such as the first region 11 and the second region 12) of the display panel 1 can be determined by the positions and areas of the divided first region 11 and the second region 12, and the corresponding actuator can be selected to enhance the sound pressure levels of the low frequency and the medium-high frequency.

[0063] In some embodiments, the display device further includes: a support frame 5 for fixing the magnet 02 and the yoke 01. At the same time, the support frame 5 may have a circular cover shape with a hollow space inside to surround the entire outer periphery of the actuator, and the cover member may be formed of a metal material with high thermal conductivity and high heat capacity. Of course, the support frame 5 does not necessarily have a circular shape, and its shape is not limited as long as it can surround the entire outer periphery of the actuator. By surrounding the actuator, the support frame 5 hermetically seals it, which can prevent or reduce the leakage of sound in the non-display surface side direction of the display panel 1.

[0064] In some embodiments, the display panel 1 may further include a third region corresponding to the first region 11 and the second region 12. The exciter may further include a third exciter for driving the display panel 1 in the third region to vibrate to emit sound in a third frequency range. The center of the first region 11 and the center of the second region 12 fall within the sound-emitting center region A of the display panel 1. The sound-emitting center region A is located at the center of the regions where the first region 11, the second region 12, and the third region are located. At this time, based on the above similar principle, in this display device, the sound image positions of the sound emitted by the first region 11, the sound emitted by the second region 12, and the sound emitted by the third region can be kept consistent, and sounds in different frequency bands (such as low frequency, medium frequency, and high frequency) can also be emitted respectively, thus avoiding the problem of inconsistent sound images of sounds in different frequency bands.

[0065] Optionally, in some embodiments, the display panel 1 includes: an OLED display panel 1 or a liquid crystal display panel 1. Specifically, when the display panel 1 is a liquid crystal display panel 1, the display panel 1 may include: an array substrate having a plurality of gate lines and data lines, pixels located in regions where the gate lines and the data lines intersect, and thin film transistors serving as switching devices for adjusting the light transmittance of the pixels; an upper substrate having a color filter and / or a black matrix; and a liquid crystal layer formed between the array substrate and the upper substrate.

[0066] When the display panel 1 is an OLED display panel 1, the display panel 1 may include: an array substrate having a plurality of gate lines and data lines, pixels located at or near the regions where the gate lines and the data lines intersect, and thin film transistors for selectively applying voltage or current to each pixel, an OLED layer located on the array substrate, and a packaging substrate provided on the array substrate to cover the OLED layer. The packaging substrate protects the thin film transistors and the OLED layer from external impacts and prevents moisture / oxygen from penetrating into the OLED layer. The OLED layer located on the array substrate may include an inorganic light-emitting layer, such as a quantum dot light-emitting layer.

[0067] The display panel 1 used in the display device according to the content of the present invention is not limited in type. Therefore, the display panel 1 can be configured using display devices according to various display device technologies. Since the display panel 1 used in the display device according to this embodiment has a general structure, a more detailed description of the display panel 1 will be omitted. In any display type case, the display panel 1 may further include a backing such as a metal plate attached thereto, and may also include other structures.

[0068] In this application, the display panel 1 with an actuator can be implemented at a user interface module in a vehicle, such as at a center console area in an automobile. For example, such a display panel 1 can be configured between two front passenger seats so that the sound generated due to the vibration of the display panel 1 propagates towards the interior of the vehicle. Thus, when compared with having only speakers on the inner sides in the vehicle, the audio experience inside the vehicle can be improved.

[0069] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such a process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0070] As described above according to the embodiments of the present invention, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and its modified use based on the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A display device, comprising: a display panel and an exciter, the exciter being disposed on the non-display surface side of the display panel for driving the display panel to vibrate and generate sound; characterized in that the display panel is at least divided into a first area and a second area corresponding to the first area; the exciter includes: a first exciter for driving the first area of the display panel to vibrate to generate sound in a first frequency range; a second exciter for driving the second area of the display panel to vibrate to generate sound in a second frequency range; the display panel has a sound-generating center area located in the area where the first area is located; the center of the first area and the center of the second area fall within the sound-generating center area of the display panel; the second area surrounds the periphery of the first area; the projection of the first exciter on the display panel falls within the area where the projection of the second exciter on the display panel is located; and the first exciter is connected to the display panel of the first area to drive the first area of the display panel to vibrate; the second exciter is connected to the display panel of the second area to drive the second area of the display panel to vibrate; the display panel further includes a support frame having a hollow space inside for surrounding the entire outer periphery of the exciter.

2. The display device according to claim 1, characterized in that the center of the second area overlaps with the center of the first area.

3. The display device according to claim 1, characterized in that the first exciter and / or the second exciter includes: a T-iron, a magnet, and a coil wound around a bobbin; the protruding part of the T-iron and the projection of the magnet on the display panel both include a ring shape; and the protruding part of the T-iron and the magnet are sleeved, and the two define a ring-shaped hollow space; the coil is inserted into the ring-shaped hollow space through the bobbin, and one end of the bobbin is fixedly connected to the display panel.

4. The display device according to claim 1, characterized in that the second exciter includes: a T-iron, a magnet, and a coil wound around a bobbin; the protruding part of the T-iron and the projection of the magnet on the display panel both include a ring shape; and the magnet is sleeved outside the protruding part of the T-iron, and the two define a ring-shaped hollow space; the coil is inserted into the ring-shaped hollow space through the bobbin, and one end of the bobbin is fixedly connected to the second area of the display panel; the projection of the first exciter on the display panel falls within the area restricted by the projection of the protruding part of the T-iron of the second exciter on the display panel.

5. The display device according to claim 4, characterized in that the first exciter includes: a T-iron, a magnet, and a coil wound around a bobbin; the protruding part of the T-iron and the projection of the magnet on the display panel both include a ring shape; and the protruding part of the T-iron is sleeved outside the magnet, and the two define a ring-shaped hollow space; the coil is inserted into the ring-shaped hollow space through the bobbin, and one end of the bobbin is fixedly connected to the first area of the display panel.

6. The display device according to claim 1, wherein, the display panel includes a full-screen panel; the display device further includes: a partition sound absorption part, disposed on the non-display surface side of the display panel, for partitioning the display panel into the first area and the second area, and blocking the vibration transmission between the first area and the second area.

7. The display device according to claim 6, wherein, the material of the partition sound absorption part includes: porous sound absorption material or planar sound absorption material.

8. The display device according to any one of claims 1 to 6, wherein, the area of the first area is smaller than the area of the second area; the frequency of the sound emitted from the first area is greater than the frequency of the sound emitted from the second area.

9. The display device according to claim 1, wherein, the display panel includes: an OLED display panel or a liquid crystal display panel.

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