Display module and display device

Abstract

The utility model discloses a display module and a display device, and belongs to the field of display. The display module comprises a display panel, a back plate, a first sound production device and a second sound production device. The frequency of the sound emitted by the first sound production device in the display module is higher than that of the sound emitted by the second sound production device, so that compared with the mode that only the second sound production device used for emitting the low and medium frequency sound is arranged, the first sound production device emitting the high frequency sound is additionally arranged; the display module can be combined with the existing second sound production device for emitting low and medium frequency sound, so that richer and more balanced sound can be provided, and the overall effect of the sound produced by the display module is better. Besides, the penetrating power of the high-frequency sound is relatively weak, so that the high-frequency sound emitted by the first sound production device is not blocked by the back plate by designing the first hollow area on the back plate connected with the first sound production device, and the quality of the sound emitted by the display module is further improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] With the development of display technology, consumers' requirements for display devices are no longer limited to picture quality and clarity, and sound output has also become an important consideration. Screen sound technology that can achieve "sound and picture integration" has become a key requirement for current display devices. Screen sound technology drives the display screen to vibrate through a built-in exciter, which in turn drives the air to vibrate to generate sound waves, and finally transmits the sound to the audience.

[0003] Normally, screen sound technology is mainly used in organic light emitting diode (ie, OLED) display devices. Because the organic light emitting diode screen does not require a backlight, the audio exciter can be directly fixed on the screen to generate sound by driving the screen to vibrate. For liquid crystal displays (ie, LCDs), since they rely on backlight sources, it is more difficult to directly fix the audio exciter on the screen to achieve vibration sound. Therefore, in a liquid crystal display, the audio exciter cannot be fixed in the liquid crystal display, and a speaker that can emit sound can usually be separately set on the backlight module in the liquid crystal display to ensure that the liquid crystal display has a sound-generating function.

[0004] However, the quality of sound emitted by LCD monitors directly through speakers is poor. Utility Model Content

[0005] The embodiment of the present application provides a display module, which can solve the problem of poor sound quality in the prior art. The technical solution is as follows:

[0006] In one aspect, a display module is provided, comprising:

[0007] A display panel, a back panel, a first sound emitting device and a second sound emitting device;

[0008] The display panel has a display surface;

[0009] The back plate is located at a side of the display panel away from the display surface and is connected to the display panel, and the back plate has a first hollow area;

[0010] The first sound-emitting device is connected to a side of the back plate facing away from the display panel, and the orthographic projection of the first sound-emitting device on the display panel covers the orthographic projection of the first hollow area on the display panel;

[0011] The second sound-emitting device is connected to a side of the back plate facing away from the display panel, and an orthographic projection of the second sound-emitting device on the display panel does not overlap with an orthographic projection of the first hollow area on the display panel;

[0012] Wherein, the frequency of the sound emitted by the first sound-emitting device is higher than the frequency of the sound emitted by the second sound-emitting device.

[0013] Optionally, the first sound-generating device comprises: a sound-generating sheet and an exciter, wherein the sound-generating sheet is connected to a side of the back plate away from the display panel, and the exciter is connected to a side of the sound-generating sheet away from the back plate;

[0014] Wherein, the orthographic projection of the sound-emitting sheet on the display panel covers the orthographic projection of the first hollow area on the display panel.

[0015] Optionally, the orthographic projection of the actuator on the display panel is located in a central area of ​​the orthographic projection of the first hollow area on the display panel.

[0016] Optionally, the sound-generating sheet is a sheet structure made of metal material.

[0017] Optionally, the thickness of the sound-emitting sheet ranges from 0.2 mm to 0.4 mm.

[0018] Optionally, there are two of the first sound-emitting devices and two of the second sound-emitting devices, and the two first sound-emitting devices are distributed on both sides of the two second sound-emitting devices.

[0019] Optionally, the back plate further has a second hollow area, and the second sound-emitting device has a sound-emitting surface on a side facing the back plate;

[0020] Wherein, the orthographic projection of the sound-emitting surface on the display panel is located within the orthographic projection of the second hollow area on the display panel.

[0021] Optionally, the display module further comprises: a side-entry light source and a light guide plate located between the display panel and the back plate, wherein the light emitting surface of the light source faces the side surface of the light guide plate;

[0022] Wherein, the thickness range of the light guide plate is: 1.4 mm to 1.6 mm; the thickness range of the back plate is: 0.7 mm to 0.9 mm.

[0023] Optionally, the display module further comprises: a buffer layer located between the display panel and the back plate, the buffer layer being ring-shaped and connected to edge portions of the back plate and the display panel respectively;

[0024] Among them, the thickness range of the buffer layer is from 0.8 mm to 0.9 mm.

[0025] On the other hand, a display device is provided, including:

[0026] A power supply component and a display module connected to the power supply component, where the display module is any one of the above-mentioned display modules.

[0027] The beneficial effects brought by the technical solutions provided in the embodiments of the present application at least include:

[0028] Since the frequency of the sound emitted by the first sound-emitting device in the display module is higher than that of the second sound-emitting device, compared with only setting the second sound-emitting device for emitting medium and low-frequency sounds, by adding the first sound-emitting device for emitting high-frequency sounds in the present application, it can be combined with the existing second sound-emitting device for emitting medium and low-frequency sounds, so as to provide richer and more balanced sounds, making the overall sound effect of this display module better. In addition, since the penetration of high-frequency sounds is relatively weak, by designing a first hollowed-out area on the backplane at the connection with the first sound-emitting device, the high-frequency sounds emitted by the first sound-emitting device will not be blocked by the backplane, so that the high-frequency sounds can pass through the backplane more smoothly, reducing the obstruction in the sound propagation process to further improve the sound quality of the sound emitted by this display module. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 It is a top view of a display module provided by an embodiment of the present application;

[0031] Figure 2 It is Figure 1 A cross-sectional view at A-A';

[0032] Figure 3 It is Figure 1 Another cross-sectional view at A-A';

[0033] Figure 4 It is a top view of another display module provided by an embodiment of the present application;

[0034] Figure 5 It is Figure 1 Another cross-sectional view at A-A';

[0035] Figure 6 It is an FR curve diagram corresponding to sound passing through different types of backplates provided by an embodiment of the present application;

[0036] Figure 7 It is an F0 curve diagram corresponding to sound passing through different types of backplates provided by an embodiment of the present application;

[0037] Figure 8 It is a THD curve diagram corresponding to sound passing through different types of backplates provided by an embodiment of the present application;

[0038] Figure 9 It is an FR curve diagram corresponding to sound passing through different types of light guide plates provided by an embodiment of the present application;

[0039] Figure 10 It is an F0 curve diagram corresponding to sound passing through different types of light guide plates provided by an embodiment of the present application;

[0040] Figure 11 It is a THD curve diagram corresponding to sound passing through different types of light guide plates provided by an embodiment of the present application;

[0041] Figure 12 It is an FR curve diagram corresponding to sound passing through different types of buffer layers provided by an embodiment of the present application;

[0042] Figure 13 It is an F0 curve diagram corresponding to sound passing through different types of buffer layers provided by an embodiment of the present application;

[0043] Figure 14 It is a THD curve diagram corresponding to sound passing through different types of buffer layers provided by an embodiment of the present application;

[0044] Figure 15 It is an FR curve diagram corresponding to sound passing through different types of sounding films provided by an embodiment of the present application. Detailed implementation manners

[0045] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0046] In the related art, after a speaker capable of emitting sound is separately provided on a backlight module in an LCD monitor, the speaker usually can only emit sounds with relatively low frequencies, resulting in that the LCD monitor can only emit medium and low frequency sounds, and further resulting in poor quality of the sounds emitted by the LCD monitor.

[0047] Please refer to Figure 1 , Figure 1000 may include: a display panel 100, a back panel 200, a first sound device 300 and a second sound device 400. It should be noted that: Figure 1 Only the distribution of the back plate 200, the first sound device 300 and the second sound device 400 in the display module 000 is described, and the display panel 100 is not described. This structure will be described in subsequent drawings.

[0048] To see the internal structure of the display module 000 more clearly, please refer to Figure 2 , Figure 2 yes Figure 1 A cross-sectional view at AA'. The display panel 100 in the display module 000 may have a display surface, and the display panel 100 may display images through the display surface.

[0049] The back plate 200 in the display module 000 is located on a side of the display panel 100 away from the display surface, and is connected to the display panel 100. Here, the back plate 200 in the display module 000 can support and protect the display panel 100.

[0050] The back panel 200 in the display module 000 may have a first hollow area K1, and the first sound-emitting device 300 in the display module 000 may be connected to the side of the back panel 200 facing away from the display panel 100, and the orthographic projection of the first sound-emitting device 300 on the display panel 100 covers the orthographic projection of the first hollow area K1 on the display panel 100.

[0051] The second sound emitting device 400 in the display module 000 may be connected to the side of the back plate 200 away from the display panel 100 , and the orthographic projection of the second sound emitting device 400 on the display panel 100 does not overlap with the orthographic projection of the first hollow area K1 on the display panel 100 .

[0052] The frequency of the sound emitted by the first sound emitting device 300 in the display module 000 is higher than the frequency of the sound emitted by the second sound emitting device 400. For example, the sound emitted by the first sound emitting device 300 is a high-frequency sound, and the sound emitted by the second sound emitting device 400 is a medium-low frequency sound.

[0053] In the embodiment of the present application, since the frequency of the sound emitted by the first sound-emitting device 300 in the display module 000 is higher than the frequency of the sound emitted by the second sound-emitting device 400, compared with the second sound-emitting device 400 that is only provided for emitting medium and low frequency sounds, the present application adds a first sound-emitting device 300 that emits high-frequency sounds, which can be combined with the existing second sound-emitting device 400 that emits medium and low frequency sounds, thereby providing a richer and more balanced sound, so that the overall effect of the sound emitted by this display module 000 is better.

[0054] In addition, since the penetration power of high-frequency sound is relatively weak, by designing a first hollow area K1 on the back plate 200 at the connection with the first sound-emitting device 300, the high-frequency sound emitted by the first sound-emitting device 300 will not be blocked by the back plate 200, so that the high-frequency sound can pass through the back plate 200 more smoothly, reducing the obstruction in the sound propagation process, and further improving the sound quality of the display module 000.

[0055] In summary, the present application provides a display module, including: a display panel, a back plate, a first sound-emitting device, and a second sound-emitting device. Since the frequency of the sound emitted by the first sound-emitting device in the display module is higher than that of the sound emitted by the second sound-emitting device, compared with only providing the second sound-emitting device for emitting medium and low-frequency sounds, by adding the first sound-emitting device for emitting high-frequency sounds in the present application, it can be combined with the existing second sound-emitting device for emitting medium and low-frequency sounds, so as to provide richer and more balanced sounds, making the overall sound effect of this display module better. In addition, since the penetration power of high-frequency sound is relatively weak, by designing a first hollow area on the back plate at the connection with the first sound-emitting device, the high-frequency sound emitted by the first sound-emitting device will not be blocked by the back plate, so that the high-frequency sound can pass through the back plate more smoothly, reducing the obstruction in the sound propagation process, and further improving the sound quality of this display module.

[0056] In the embodiment of the present application, please refer to Figure 3 , Figure 3 which Figure 1 is another cross-sectional view taken at A-A'. The first sound-emitting device 300 in the display module 000 may include: a sounding piece 301 and an exciter 302.

[0057] The sounding piece 301 in the first sound-emitting device 300 may be connected to the side of the back plate 200 facing away from the display panel 100, and the exciter 302 in the first sound-emitting device 300 may be connected to the side of the sounding piece 301 facing away from the back plate 200.

[0058] Here, the exciter 302 may be a piezoelectric sensor. A piezoelectric ceramic is provided inside the exciter 302. During the power-on operation of the exciter 302, the piezoelectric ceramic can deform, and then drive the sounding piece 301 to vibrate, so that the sounding piece 301 can emit high-frequency sounds.

[0059] Exemplarily, the sounding piece 301 is adhesively connected to the side of the back plate 200 facing away from the display panel 100, and the exciter 302 is adhesively connected to the side of the sounding piece 301 facing away from the back plate 200.

[0060] Among them, the orthographic projection of the sounding piece 301 in the first sound generating device 300 on the display panel 100 covers the orthographic projection of the first hollow area K1 on the display panel 100.

[0061] In this case, setting the first hollow area K1 reserves sufficient space for the vibration of the sounding piece 301, ensuring that the sounding piece 301 can vibrate and generate sound better, so as to further improve the sound quality.

[0062] Exemplarily, the orthographic projection of the exciter 302 in the first sound generating device 300 on the display panel 100 is located within the central area of the orthographic projection of the first hollow area K1 on the display panel 100.

[0063] In this way, the vibration of the sounding piece 301 can be more effectively excited, making the propagation of sound more uniform and the sound generation more efficient.

[0064] In the embodiment of the present application, the sounding piece 301 in the first sound generating device 300 is a sheet-like structure made of a metal material. Exemplarily, the sounding piece 301 can be a sheet-like structure made of aluminum metal. Since the metal material has good rigidity, the sounding piece 301 can maintain stable performance during long-term use.

[0065] In the embodiment of the present application, please refer to Figure 4 , Figure 4 , which is a top view of another display module provided by the embodiment of the present application. There are two first sound generating devices 300 and two second sound generating devices 400 in the display module 000, and the two first sound generating devices 300 are distributed on both sides of the two second sound generating devices 400.

[0066] In the present application, since the sound emitted by the first sound generating device 300 is a high-frequency sound and the high-frequency sound usually has weak penetration, by arranging the two first sound generating devices 300 on both sides of the two second sound generating devices 400, the diffraction ability of the high-frequency sound can be better improved, thereby improving the propagation effect of the high-frequency sound.

[0067] Optionally, the second sound generating device 400 in the display module 000 can be a speaker that can directly emit sound, and the speaker can emit a sound with a lower frequency.

[0068] In the embodiment of the present application, please refer to Figure 5 , Figure 5 is Figure 1Another cross-sectional view taken at A-A'. The display module 000 may further include: an adhesive layer 500. The adhesive layer 500 may be located between the back plate 200 and the second sound-emitting device 400. Here, both sides of the adhesive layer 500 may be connected to the back plate 200 and the second sound-emitting device 400 respectively. In this way, the stable connection between the second sound-emitting device 400 and the back plate 200 can be ensured through the adhesive layer 500.

[0069] In the embodiment of the present application, the back plate 200 in the display module 000 further has a second hollowed-out area K2, and one side of the second sound-emitting device 400 in the display module 000 facing the back plate 200 has a sound-emitting surface (not shown).

[0070] Wherein, the orthographic projection of the sound-emitting surface on the display panel 100 is located within the orthographic projection of the second hollowed-out area K2 on the display panel 100.

[0071] In this case, the second hollowed-out area K2 helps the mid-low frequency sound emitted by the second sound-emitting device 400 to better penetrate the back plate 200, improving the sound penetration.

[0072] In the embodiment of the present application, the display panel 100 in the display module 000 may be a liquid crystal display panel. As Figure 5 shown, the display module 000 may further include: a light source device located between the display panel 100 and the back plate 200. Here, the light source device may emit light towards the display panel 100, so that the light source device can provide light for the display panel 100, thereby ensuring that the display panel 100 can display the picture normally.

[0073] Exemplarily, the light source device may include: a side-in type light source (not shown) and a light guide plate 600, and the light-emitting surface of the side-in type light source faces the side surface of the light guide plate 600.

[0074] In the embodiment of the present application, the display module 000 further includes: a reflective sheet 800 and an optical film group 900. Among them, the light guide plate 600 is located between the reflective sheet 800 and the optical film group 900, and the optical film group 900 is closer to the display panel 100 relative to the light guide plate 600. Among them, the optical film group 900 may include one optical film or multiple optical films. When the optical film group 900 includes multiple optical films, these optical films may be respectively: a first diffusion sheet, a first prism sheet, a second prism sheet, and a second diffusion sheet stacked in a direction perpendicular to and away from the light guide plate 600.

[0075] Optionally, as Figure 5As shown, the display module 000 further includes: a buffer layer 700 located between the display panel 100 and the backplane 200. The buffer layer 700 is annular, and the buffer layer 700 is connected to the edge portions of the backplane 200 and the display panel 100 respectively.

[0076] Exemplarily, the display module 000 further includes: a rubber frame 1000. Wherein, the rubber frame 1000 is connected to the edge portion of the backplane 200, and the rubber frame 1000 is used to support the display panel 100. Here, the buffer layer 700 can be connected to the edge portions of the rubber frame 1000 and the display panel 100 respectively. That is to say, the display panel 100 can be connected to the backplane 700 through the buffer layer 700 and the rubber frame 1000.

[0077] It should be noted that since the structural design and materials of the display module 000 will affect the sound quality, in this application, the sound quality can be evaluated by three parameters: FR (frequency response), F0 (fundamental frequency), and THD (total harmonic distortion). The average value of FR (frequency response) reflects the uniformity of the output signal of the device over the entire frequency range. The larger the average value, the more consistent the output of the device at these frequency points, and the better the sound quality. By checking the average values at four frequency points of 800 Hz, 1000 Hz, 1200 Hz, and 1500 Hz, the larger the average value, the better the sound quality. The peak value of F0 (fundamental frequency) reflects the intensity of the fundamental frequency component in the sound signal. The larger the value, the stronger the fundamental frequency component, and the better the sound quality. By checking the ordinate value corresponding to the peak, the larger the value, the better the sound quality. The flatness of THD (total harmonic distortion) reflects the degree of distortion generated by the device when processing the signal. The better the flatness, the lower the degree of distortion, and the better the sound quality. By checking the flatness of the entire curve after 200 Hz, the flatter the sound quality.

[0078] In this application, the backplane 200 can be made of metallic iron, and the thickness range of the backplane 200 is: 0.7 mm to 0.9 mm.

[0079] Exemplarily, please refer to Figure 6 , Figure 7 and Figure 8 , Figure 6 is an FR curve diagram corresponding to the sound passing through different types of backplanes provided by an embodiment of this application, Figure 7 is an F0 curve diagram corresponding to the sound passing through different types of backplanes provided by an embodiment of this application, Figure 8 is a THD curve diagram corresponding to the sound passing through different types of backplanes provided by an embodiment of this application. As Figure 6 can be seen, the backplane 200 made of metallic iron (i.e., the iron backplane) is superior to the backplane 200 made of metallic aluminum (i.e., the aluminum backplane). As Figure 7It can be seen that the sound quality is greatly affected by the thickness of the material of the back plate 200, and the thinner the material, the better the sound quality. From Figure 8 it can be seen that the greater the distortion is when the back plate 200 is thicker. Therefore, a thinner iron back plate is more beneficial to improving the sound quality. For this reason, the back plate 200 in this application can be made of metallic iron, and the thickness of the back plate 200 can be 0.8 millimeters.

[0080] In this application, the thickness range of the light guide plate 600 is: 1.4 millimeters to 1.6 millimeters.

[0081] Exemplarily, please refer to Figure 9 , Figure 10 and Figure 11 , Figure 9 which are FR curve graphs corresponding to sound passing through different types of light guide plates provided by the embodiments of this application, Figure 10 which is an F0 curve graph corresponding to sound passing through different types of light guide plates provided by the embodiments of this application, Figure 11 which is a THD curve graph corresponding to sound passing through different types of light guide plates provided by the embodiments of this application. From Figure 9 it can be seen that the light guide plate 600 with a thickness of 1.5 mm is superior to the light guide plate 600 with a thickness of 2 mm. From Figure 10 it can be seen that the light guide plate 600 with a thickness of 1.5 mm is superior to the light guide plate 600 with a thickness of 2 mm. From Figure 11 it can be seen that the 1.5 mm light guide plate 600 and the 2 mm light guide plate 600 have basically the same influence on THD (total harmonic distortion). For this reason, a thinner light guide plate 600 is more beneficial to improving the sound quality, and the thickness of the light guide plate 600 can be 1.5 millimeters.

[0082] In this application, the thickness range of the buffer layer 700 is 0.8 millimeters to 0.9 millimeters.

[0083] Exemplarily, please refer to Figure 12 , Figure 13 and Figure 14 , Figure 12 which are FR curve graphs corresponding to sound passing through different types of buffer layers provided by the embodiments of this application, Figure 13 which is an F0 curve graph corresponding to sound passing through different types of buffer layers provided by the embodiments of this application, Figure 14 which is a THD curve graph corresponding to sound passing through different types of buffer layers provided by the embodiments of this application. From Figure 12 it can be seen that in the low-frequency band, buffer layers 700 with different thicknesses and different densities have little difference in the influence on the sound quality. From Figure 13 it can be seen that in the entire interval, buffer layers 700 with different thicknesses and different densities have little difference in the influence on the sound quality. From Figure 14It can be seen that the low-density buffer layer 700 with a thickness of 0.86 mm is optimal. Therefore, the buffer layer 700 with a thin thickness and a low density is more beneficial to the improvement of sound quality. For example, the buffer layer 700 can be made of foam tape, and the thickness of the buffer layer 700 can be 0.86 mm.

[0084] In the present application, the thickness range of the sounding piece 301 in the first sound generating device 300 is 0.2 mm to 0.4 mm.

[0085] Exemplarily, please refer to Figure 15 , Figure 15 is the FR curve diagram corresponding to the sound passing through different types of sounding pieces provided by the embodiment of the present application. It can be seen from Figure 15 that the thinner the sounding piece 301 is, the more beneficial it is to the improvement of sound quality. For example, the thickness of the sounding piece 301 can be 0.3 mm.

[0086] In this case, by designing the sounding piece 301, the back plate 200, the light guide plate 600 and the buffer layer 700 with appropriate thicknesses, the vibration of the exciter 302 can be better responded to, so that the sound is more evenly diffused, thereby achieving a better sound effect.

[0087] In summary, the present application provides a display module, including: a display panel, a back plate, a first sound generating device and a second sound generating device. Since the frequency of the sound emitted by the first sound generating device in the display module is higher than the frequency of the sound emitted by the second sound generating device, therefore, compared with only setting the second sound generating device for emitting medium and low frequency sounds, the present application can be combined with the existing second sound generating device for emitting medium and low frequency sounds by adding the first sound generating device for emitting high frequency sounds, so as to provide a richer and more balanced sound, making the overall sound effect of this display module better. In addition, since the penetration of high frequency sound is relatively weak, therefore, by designing a first hollow area on the back plate at the connection with the first sound generating device, the high frequency sound emitted by the first sound generating device will not be blocked by the back plate, so that the high frequency sound can pass through the back plate more smoothly, reducing the obstruction in the sound propagation process and further improving the sound quality of the sound emitted by this display module.

[0088] The embodiment of the present application also provides a display device, which can be: any product or component with a display function such as a mobile phone, a tablet computer, a television, an advertising machine, a display screen, a digital photo frame, etc. The display device may include: a power supply component, and a display module 000 connected to the power supply component, where the display module 000 is the display module 000 of any of the above.

[0089] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plural" means two or more, unless otherwise clearly defined.

[0090] The above are only optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A display module, characterized in that: include: A display panel (100), a back panel (200), a first sound-emitting device (300), and a second sound-emitting device (400); The display panel (100) has a display surface; The back plate (200) is located on a side of the display panel (100) away from the display surface and is connected to the display panel (100), and the back plate (200) has a first hollow area (K1); The first sound-generating device (300) is connected to a side of the back plate (200) facing away from the display panel (100), and an orthographic projection of the first sound-generating device (300) on the display panel (100) covers an orthographic projection of the first hollow area (K1) on the display panel (100); The second sound-generating device (400) is connected to a side of the back plate (200) facing away from the display panel (100), and an orthographic projection of the second sound-generating device (400) on the display panel (100) does not overlap with an orthographic projection of the first hollow area (K1) on the display panel (100); Wherein, the frequency of the sound emitted by the first sound-emitting device (300) is higher than the frequency of the sound emitted by the second sound-emitting device (400).

2. The display module according to claim 1, characterized in that: The first sound-generating device (300) comprises: a sound-generating sheet (301) and an exciter (302), wherein the sound-generating sheet (301) is connected to a side of the back plate (200) that is away from the display panel (100), and the exciter (302) is connected to a side of the sound-generating sheet (301) that is away from the back plate (200); Wherein, the orthographic projection of the sound-emitting sheet (301) on the display panel (100) covers the orthographic projection of the first hollow area (K1) on the display panel (100).

3. The display module according to claim 2, characterized in that: The orthographic projection of the actuator (302) on the display panel (100) is located in the central area of ​​the orthographic projection of the first hollow area (K1) on the display panel (100).

4. The display module according to claim 2, characterized in that: The sound-generating sheet (301) is a sheet-like structure made of metal material.

5. The display module according to claim 4, characterized in that: The thickness of the sound-generating sheet (301) ranges from 0.2 mm to 0.4 mm.

6. The display module according to any one of claims 1 to 5, characterized in that: There are two of each of the first sound-generating devices (300) and the second sound-generating devices (400), and the two first sound-generating devices (300) are distributed on both sides of the two second sound-generating devices (400).

7. The display module according to any one of claims 1 to 5, characterized in that: The back plate (200) further comprises a second hollow area (K2), and the second sound-generating device (400) comprises a sound-generating surface on a side facing the back plate (200); Wherein, the orthographic projection of the sound-emitting surface on the display panel (100) is located within the orthographic projection of the second hollow area (K2) on the display panel (100).

8. The display module according to any one of claims 1 to 5, characterized in that: The display module further comprises: a side-entry light source and a light guide plate (600) located between the display panel (100) and the back plate (200), wherein the light emitting surface of the light source faces the side of the light guide plate (600); Wherein, the thickness of the light guide plate (600) ranges from 1.4 mm to 1.6 mm; and the thickness of the back plate (200) ranges from 0.7 mm to 0.9 mm.

9. The display module according to claim 8, characterized in that: The display module (000) further comprises: a buffer layer (700) located between the display panel (100) and the back plate (200), the buffer layer (700) being ring-shaped, and the buffer layer (700) being connected to edge portions of the back plate (200) and the display panel (100) respectively; Wherein, the thickness of the buffer layer (700) ranges from 0.8 mm to 0.9 mm.

10. A display device, characterized in that: include: A power supply component, and a display module (000) connected to the power supply component, wherein the display module (000) is the display module (000) according to any one of claims 1 to 9.

Images