Display module and electronic device

Abstract

The application provides a display module and electronic equipment, comprising: a touch layer with a touch function; a hybrid layer with a directional sound emitting function and a light adjusting function, the hybrid layer comprising a control layer and a sound emitting layer, the control layer being located between the touch layer and the sound emitting layer; and a substrate located on a side of the sound emitting layer away from the control layer. The technical scheme of the application can solve the problem that the display device in the related art cannot effectively combine the directional sound emitting function and the touch function.

Description

Technical Field

[0001] This invention relates to the field of display module technology, and more specifically to a display module and electronic device. Background Technology

[0002] With the development of display technology, display devices using light-emitting diodes (LEDs) as light sources are increasingly appearing in people's lives, greatly changing their lifestyles. As users use display devices more frequently, they not only have higher requirements for the picture quality and clarity of display devices, but also for the sound output effects. Display devices that achieve synchronization between sound and picture, and realize the unity and perfect integration of sound and picture, are increasingly favored by users.

[0003] In related technologies, directional sound generation technology can achieve directional sound generation. However, current applications of directional sound generation technology in display devices mainly suffer from the following problems: First, the directional sound generation device is located above the touch layer. The electric field lines emitted by the touch layer are shielded or weakened by this metal layer, making it difficult to penetrate the cover and couple with the finger, leading to touch failure or severely degraded touch performance. Therefore, existing directional sound generation display devices struggle to integrate touch functionality. Second, such as... Figure 1 As shown, a touch area and a directional sound area are integrated into the display device, and the touch area and the directional sound area are separated. However, although the above solution can avoid the interference of the directional sound device on the touch function, it sacrifices the touch and directional sound working areas, making it difficult to achieve full-screen directional sound and full-screen touch functions.

[0004] Therefore, how to effectively combine directional sound generation and touch control has become an urgent problem to be solved. Summary of the Invention

[0005] In view of this, embodiments of the present invention aim to provide a display module and electronic device to solve the problem that display devices in the related art cannot effectively combine directional sound emission function and touch function.

[0006] The present invention provides a display module, comprising: a touch layer with touch function; a hybrid layer with directional sound emission function and dimming function, the hybrid layer including a control layer and a sound emission layer, the control layer being located between the touch layer and the sound emission layer; and a substrate located on the side of the sound emission layer away from the control layer.

[0007] In one embodiment, the hybrid layer further includes a first base layer and a second base layer, wherein the first base layer is located between the control layer and the sound-emitting layer, and the second base layer is located between the sound-emitting layer and the substrate.

[0008] In one embodiment, one of the first base layer and the second base layer includes a first support layer with a support function, and the other of the first base layer and the second base layer includes a second support layer with a support function.

[0009] In one embodiment, the display module further includes a display layer with light-emitting function, the display layer being located between the control layer and the touch layer, the first base layer including a first support layer and a first backlight layer with uniform light function, the first support layer being located on the side of the sound-emitting layer away from the second base layer, and the first backlight layer being located on the side of the first support layer away from the sound-emitting layer.

[0010] In one embodiment, the first base layer further includes a buffer layer with a buffering function, which is located between the first backlight layer and the control layer.

[0011] In one embodiment, the second base layer includes a second support layer and a second backlight layer with uniform light function. The second backlight layer is located on the side of the sound-emitting layer away from the first base layer, and the second support layer is located between the second backlight layer and the substrate.

[0012] In one embodiment, the first base layer includes a buffer layer; and / or, the display module further includes a display layer with light-emitting function, the display layer being located between the control layer and the touch layer, the second base layer including a first support layer, a second support layer, a first backlight layer and a second backlight layer, the first backlight layer being located on the side of the control layer away from the display layer, the first support layer being located on the side of the first backlight layer away from the control layer, the second backlight layer being located on the side of the first support layer away from the first backlight layer, and the second support layer being located between the second backlight layer and the substrate.

[0013] In one embodiment, the display module further includes an encapsulation layer and a display layer with light-emitting function, the display layer being located on the side of the control layer away from the sound-emitting layer, and the encapsulation layer being located between the touch layer and the display layer; and / or, the display module further includes a polarizing layer and a cover plate, the polarizing layer being located on the side of the touch layer away from the control layer, and the cover plate being disposed on the polarizing layer.

[0014] In one embodiment, the sound-emitting layer includes a first electrode, a second electrode, and a plurality of support pillars. The first electrode is located on the side of the control layer away from the touch layer, the second electrode is located between the first electrode and the substrate, and the array of multiple support pillars is disposed between the first electrode and the second electrode, with the space between two adjacent support pillars forming an air gap. The sound-emitting layer also includes an insulating layer located on the side of the first electrode away from the substrate, and the array of multiple support pillars is disposed between the insulating layer and the second electrode.

[0015] In another aspect, the present invention provides an electronic device including the display module provided above.

[0016] The technical solution of this invention includes a touch layer with touch functionality, a hybrid layer with directional sound emission and dimming functions, and a substrate. The sound emission layer is placed on the substrate and positioned between the control layer and the substrate, with the touch layer integrated above the control layer. On one hand, the electric field lines emitted by the touch layer are not shielded or weakened by the metal layer of the directional sound emission device, preventing touch performance degradation or touch failure. On the other hand, it avoids separating the touch layer and the sound emission layer, achieving full-screen directional sound emission and full-screen touch functionality, effectively combining directional sound emission and touch functionality, and expanding the application range of the display module. Attached Figure Description

[0017] Figure 1 The diagram shows the structure of the touch area and directional sound area of ​​a display module in related technologies.

[0018] Figure 2 The diagram shown is a structural schematic of the display module provided in an embodiment of the present invention.

[0019] Figure 3 The diagram shown is another structural schematic of the display module provided in an embodiment of the present invention.

[0020] Figure 4 The diagram shown is a structural schematic of the display module provided in Embodiment 1 of the present invention.

[0021] Figure 5 As shown Figure 4 A magnified view of a portion of point A in the middle.

[0022] Figure 6 The diagram shown is a schematic diagram of the display module provided in Embodiment 2 of the present invention.

[0023] Figure 7 The diagram shown is a structural schematic of the sound-emitting layer of the display module provided in an embodiment of the present invention.

[0024] Figure 8 The diagram shown is a circuit connection diagram of the sound-emitting layer of the display module provided in an embodiment of the present invention.

[0025] Figure 9 The image shown is a front view of the display module provided in an embodiment of the present invention. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 2 to 5 As shown, Embodiment 1 of the present invention provides a display module. In Embodiment 1, the display module includes a touch layer 10 with touch function, a hybrid layer 20 with directional sound function and dimming function, and a substrate 30. The hybrid layer 20 includes a control layer 21 and a sound-emitting layer 22. The control layer 21 is located between the touch layer 10 and the sound-emitting layer 22. The substrate 30 is located on the side of the sound-emitting layer 22 away from the control layer 21.

[0028] In related technologies, the sound waves from traditional loudspeakers and the screen-based sound devices that have emerged in recent years propagate in all directions, with a sound field distribution similar to a sports field. This results in poor directional sound wave propagation, easily leading to problems such as privacy leaks and noise pollution. Therefore, directional sound technology has emerged. This technology processes audio signals to form ultrasonic signals, which are then emitted into the air by an electrostatic thin-film ultrasonic transducer. The ultrasonic waves demodulate the audio signals contained within them in the air, forming a highly directional audible sound signal.

[0029] In related technologies, the application of directional sound generation technology in touch-enabled display devices mainly includes the following solutions. First, a transparent directional sound generation device is placed on the light-emitting side of the display panel, integrating the translucent sound generation device with the display panel. In this solution, the electrodes of the directional sound generation device are all located above the touch function layer and are a full-surface metal layer. The electric field lines emitted by the touch layer are shielded or weakened by this metal layer, making it difficult to penetrate the cover and couple with the finger, leading to touch failure or severely degraded touch performance. Second, the touch area and directional sound generation area are integrated into the display device, and the touch area and directional sound generation area are separated, allowing one side of the display device to generate directional sound while the other side can be touched without interference. However, this solution makes it difficult to achieve full-screen directional sound generation and full-screen touch functionality.

[0030] According to the technical solution of this invention, the display module includes a touch layer 10 with touch functionality, a hybrid layer 20 with directional sound emission and dimming functions, and a substrate 30. A sound emission layer 22 is placed on the substrate 30, positioned between a control layer 21 and the substrate 30, and the touch layer 10 is integrated above the control layer 21. On one hand, the electric field lines emitted by the touch layer 10 are not shielded or weakened by the metal layer of the directional sound emission device, preventing touch performance degradation or touch failure. On the other hand, it avoids separating the touch layer 10 and the sound emission layer 22, achieving full-screen directional sound emission and full-screen touch functionality, effectively combining directional sound emission and touch functionality, and expanding the application range of the display module.

[0031] It should be noted that the control layer 21 provided in this embodiment refers to the TFT circuit layer. The TFT circuit layer is mainly composed of a thin-film transistor array. Through the TFT circuit layer, the voltage of each pixel can be controlled, and the alignment of liquid crystal molecules can be adjusted, thereby changing the amount of light transmitted. Furthermore, through the arrangement of transistors, the TFT circuit layer can act as a switching device, controlling the flow of current, and thus controlling the brightness changes of the pixels. It can also precisely control the current of each pixel, enabling the TFT circuit layer to achieve high resolution and high contrast display effects. Compared to passive matrix display technology, the TFT circuit layer can respond to image changes faster, providing a smoother display effect.

[0032] Specifically, the thin-film transistor has a gate 211, a source 212, and a drain 213, and has current control and switching functions. When the voltage of the gate 211 is lower than the threshold voltage, the channel is closed and current cannot flow; when the voltage of the gate 211 is higher than the threshold voltage, the channel is open and current can flow. By controlling the voltage of the gate 211, the conductivity of the channel is controlled, thereby controlling the output voltage of the drain 213.

[0033] Among them, substrate 30 generally refers to glass substrate 30, which plays a basic supporting role.

[0034] In Embodiment 1, the sound-emitting layer 22 is integrated on the TFT circuit layer.

[0035] In touch-enabled display devices, the touch panel can recognize touch points input by a human hand or a separate input unit and transmit the corresponding information to the display layer above.

[0036] like Figure 9 As shown, the display module provided in this embodiment includes a display area 1 and a non-display area 2. The display area 1 has directional sound emission function and touch function.

[0037] like Figure 4 and Figure 8 As shown, the hybrid layer 20 also includes a first base layer 23 and a second base layer 24. The first base layer 23 is located between the control layer 21 and the sound-emitting layer 22, and the second base layer 24 is located between the sound-emitting layer 22 and the substrate 30. The first base layer 23 and the second base layer 24 can form a basic support to protect the sound-emitting layer 22 and prevent it from being damaged.

[0038] Specifically, by setting a first base layer 23 and a second base layer 24 on both sides of the sound-emitting layer 22, a protective effect can be formed on both sides of the sound-emitting layer 22, making the protective effect of the sound-emitting layer 22 better.

[0039] like Figure 3As shown, the display module also includes an encapsulation layer 40 and a display layer 50 with light-emitting function. The display layer 50 is located on the side of the control layer 21 away from the sound-emitting layer 22, and the encapsulation layer 40 is located between the touch layer 10 and the display layer 50. By employing the above structure and placing the sound-emitting layer 22 between the display layer 50 and the substrate 30, the problems of reduced light extraction efficiency caused by the cavity layer of the directional sound-emitting device, reduced light transmittance caused by the limited transparency of the directional sound-emitting device, and the risk of the internal structure of the directional sound-emitting device being visible at certain angles can be avoided.

[0040] It should be noted that the display layer 50 can be a self-emissive layer, such as an OLED light-emitting layer. It can also be a display layer 50 formed using other light-emitting principles, such as a liquid crystal display layer 50 or a plasma display layer 50.

[0041] The encapsulation layer 40 serves to protect the internal components of the display module and prevent damage from the external environment. Depending on the type of display module and its application, the encapsulation layer 40 can be made of different materials. In one specific embodiment, the OLED display module can be encapsulated using a thin-film encapsulation layer 40, which is composed of multiple layers of alternating inorganic and organic thin films, possessing good flexibility and barrier properties, effectively preventing the penetration of moisture and oxygen. Alternatively, glass encapsulation can be used, as the glass encapsulation layer 40 effectively blocks moisture and oxygen, protecting the organic light-emitting materials inside the OLED and preventing them from failing due to oxidation and hydrolysis. In another specific embodiment, the encapsulation layer 40 of the liquid crystal display module can be made of potting compound, which can be categorized as gel-type, rubber-type, or resin-type. The main function of the potting compound is to mechanically protect the display module and improve its reliability; it can also enhance heat dissipation, reduce chip junction temperature, and improve the performance of the display module. In another specific embodiment, the encapsulation layer 40 of the LED display module can be made of epoxy resin. Epoxy resin can isolate the chip from the outside world, prevent impurities in the air from corroding the chip circuit, and at the same time provide a certain heat dissipation function, thereby improving the lifespan of the LED display module.

[0042] The touch layer 10 and the display layer 50 together form a touch display module.

[0043] In related technologies, directional sound-emitting devices are integrated into display devices. However, due to the presence of a cavity layer inside the directional sound-emitting device, the low refractive index of the cavity layer and the limited transparency of the sound-emitting device lead to problems such as decreased light extraction efficiency and decreased light transmittance. Furthermore, in related technologies, because the directional sound-emitting device has a cavity layer and a support pillar 223 supporting the cavity layer, and because the directional sound-emitting device is integrated into the display device, the support pillar 223 may be visible at certain angles after being illuminated by light emitted from the display layer 50. However, using the display module provided in this embodiment, since the sound-emitting layer 22 is located below the display layer 50, the light emitted from the display layer 50 will not illuminate the sound-emitting layer 22, thereby avoiding the aforementioned problems, improving light extraction efficiency, and reducing the risk of visibility issues.

[0044] like Figure 3 As shown, the display module also includes a polarizing layer 60 and a cover plate 70. The polarizing layer 60 is located on the side of the touch layer 10 away from the control layer 21, and the cover plate 70 is placed over the polarizing layer 60. By setting the polarizing layer 60, light can only pass through in one direction, ensuring that only light from a specific direction can pass through, thereby controlling the visibility of the displayed content. Furthermore, since the polarizing layer 60 can filter out unwanted light, it can improve the contrast of the display module, making the image clearer and more vivid. At the same time, the polarizing layer 60 can also reduce the reflection and glare of external light, making the display module easier to view in strong light environments. By setting the cover plate 70, the outermost protective layer of the display module can be formed, providing physical protection against external impacts and scratches, and protecting the sensitive components inside the display module.

[0045] Specifically, the cover plate 70 is typically made of glass or tempered glass, possessing high hardness and pressure resistance, which improves the durability and lifespan of the display module. Furthermore, the cover plate 70 can be printed with different colors, patterns, and logos, serving a decorative and aesthetic purpose. In touch-enabled display modules, the cover plate 70 also enhances touch sensitivity and accuracy, making user operation smoother.

[0046] like Figure 6 and Figure 7As shown, the sound-generating layer 22 includes a first electrode 221, a second electrode 222, and multiple support pillars 223. The first electrode 221 is located on the side of the control layer 21 away from the touch layer 10. The second electrode 222 is located between the first electrode 221 and the substrate 30. The multiple support pillars 223 are arrayed between the first electrode 221 and the second electrode 222, and the space between two adjacent support pillars 223 forms an air gap 224. When the processed audio signal is loaded through the first electrode 221 and the second electrode 222 using the sound-generating layer 22 with the above structure, a DC bias voltage is first applied to the first electrode 221 and the second electrode 222. Under the action of the DC bias voltage, charge accumulation is formed between the first electrode 221 and the second electrode 222, which serves as the basis for AC signal excitation. Furthermore, the electric field between the first electrode 221 and the second electrode 222 generates a Coulomb force, which pulls the diaphragm to the bottom of the cavity. By applying an alternating voltage, the polarity of the alternating signal in the first electrode 221 and the second electrode 222 changes, and the diaphragm vibrates due to repeated electrostatic attraction and electrostatic repulsion, thereby generating ultrasound.

[0047] After being emitted from a screen, ultrasound waves exhibit strong directivity, propagating in a near-straight line through the air. During their propagation along their axis, the ultrasound waves continuously demodulate audible audio signals through nonlinear interactions. These continuously demodulated sound waves superimpose and accumulate, ultimately forming a virtual sound array at the transmitter's end. This virtual array of sound sources is called a parametric acoustic matrix. The parametric acoustic matrix allows for continuous increases in sound wave energy along the propagation direction. Due to the strong directivity of ultrasound waves, the superposition effect propagating outwards along the main axis is very weak. This results in the superposition and convergence of highly directional sound waves along the main propagation direction, thus achieving sound privacy and preventing noise interference to others.

[0048] The first electrode 221 and the second electrode 222 can be composed of metal materials with excellent conductivity, such as Ti, Al, Ti, Cu, etc., and preferably a metal mesh structure.

[0049] Specifically, the support column 223 has a high support height, thereby forming a reasonable air gap 224 height dimension, which is more conducive to the vibration of the diaphragm and the generation of sound.

[0050] In Embodiment 1, in the direction from the first electrode 221 to the second electrode 222, the cross-section of the support column 223 can be rectangular, trapezoidal, or other shapes, as long as it can provide support.

[0051] In Embodiment 1, the sound-generating layer 22 further includes an insulating layer 225, which is located on the side of the first electrode 221 away from the substrate 30. A plurality of support pillars 223 are arrayed between the insulating layer 225 and the second electrode 222. The insulating layer 225 provides protection and electrical isolation for the first electrode 221 and the second electrode 222. Furthermore, the good flatness and uniform thickness of the insulating layer 225 facilitate the fabrication of the support pillars 223 thereon.

[0052] like Figure 4 and Figure 5 As shown, in Embodiment 1, one of the first base layer 23 and the second base layer 24 includes a first support layer 231 with a supporting function, and the other of the first base layer 23 and the second base layer 24 includes a second support layer 242 with a supporting function. The first base layer 23 and the second base layer 24 with the above-described structure have the advantages of easy material sourcing, mature technology, and easy processing.

[0053] In Embodiment 1, both the first support layer 231 and the second support layer 242 can be made of polyimide. Polyimide is a high-performance thermosetting polymer with excellent high-temperature resistance, chemical stability, and electrical insulation properties. It is commonly used as a flexible substrate material, especially in flexible display panels, where it provides good mechanical strength and flexibility. Furthermore, the polyimide layer can also be used to isolate various components in a circuit, preventing interference and cross-coupling between circuits.

[0054] Of course, the first support layer 231 and the second support layer 242 can also be made of other materials, as long as they can provide support and protection for the sound-generating layer 22.

[0055] like Figure 3 and Figure 4 As shown, the display layer 50 is located between the control layer 21 and the touch layer 10. The first base layer 23 includes a first support layer 231 and a first backlight layer 232 that provides uniform light. The first support layer 231 is located on the side of the sound-emitting layer 22 away from the second base layer 24, and the first backlight layer 232 is located on the side of the first support layer 231 away from the sound-emitting layer 22. The first base layer 23 with the above structure provides uniform light through the first backlight layer 232.

[0056] The first backlight layer 232 can be of different types, such as LED backlight or CCFL backlight.

[0057] like Figure 4 As shown, the first base layer 23 also includes a buffer layer 233 with a buffering function, which is located between the first backlight layer 232 and the control layer 21. The buffer layer 233 can provide protection and stability for the TFT circuit layer and the sound-emitting layer 22.

[0058] Specifically, due to the lattice constant mismatch in the display module, lattice stress is caused. The buffer layer 233 can alleviate this stress through a gradual transition, preventing the formation of dislocations and other defects. Simultaneously, the buffer layer 233 helps accommodate differences in the thermal expansion coefficients between different materials, reducing stress caused by temperature changes and preventing undesirable chemical reactions between the two materials, maintaining a clear and stable interface. Furthermore, the buffer layer 233 can prevent defects from the substrate (such as dislocations and microcracks) from propagating to the upper structure, improving the crystal quality of the upper material.

[0059] Depending on the type of display module and application scenario, the buffer layer 233 can be made of different materials. In one specific embodiment, the buffer layer 233 of the liquid crystal display module can be made of optical adhesive to reduce the stress transmitted from the system to the liquid crystal display module, thereby achieving the function of vibration damping. In another specific embodiment, handheld devices, such as smartphones, can use polyurethane or polyacrylate foam, coated (or laminated) with high-viscosity pressure-sensitive adhesive on one or both sides of the foam tape, or a substrate-free adhesive film material based on polysiloxane, which has excellent buffering and waterproof performance. Alternatively, in foldable screen phones, a shear-thickening fluid can be coated on the cover glass layer 70 to effectively buffer pressure of different intensities. In another specific embodiment, the buffer layer 233 of the OLED display module can be made of copper phthalocyanine, which can reduce the interfacial barrier between ITO (Indium Tin Oxide) and the organic layer, increase the adhesion of the ITO / organic interface, increase hole injection contact, suppress hole injection into the HTL layer, and balance the injection of electrons and holes. Alternatively, organic materials can be used and low-temperature film deposition technology can be employed to make the OLED surface smooth.

[0060] like Figure 4 As shown, the second base layer 24 includes a second support layer 242 and a second backlight layer 241 that provides uniform light distribution. The second backlight layer 241 is located on the side of the sound-emitting layer 22 away from the first base layer 23, and the second support layer 242 is located between the second backlight layer 241 and the substrate 30. With the above structure, the second base layer 24 provides basic support for the sound-emitting layer 22 using the second support layer 242, and provides uniform light distribution for the display layer 50 using the second backlight layer 241.

[0061] In Embodiment 1, the second support layer 242 can also be of different types, such as LED backlighting or CCFL backlighting.

[0062] It should be noted that the first backlight layer 232, the first support layer 231, the second backlight layer 241, and the second support layer 242 provided in this embodiment are stacked sequentially, which is different from the placement of the sound-emitting layer 22 in Embodiment 1. In other embodiments, the sound-emitting layer 22 can be placed between any two of the above four layers. For example, the sound-emitting layer 22 can be placed between the first backlight layer 232 and the first support layer 231, or the sound-emitting layer 22 can be placed between the second backlight layer 241 and the second support layer 242, as long as it can provide support and protection for the sound-emitting layer 22.

[0063] Furthermore, since both the first backlight layer 232 and the second backlight layer 241 are located below the display layer 50, both backlight layers can achieve the function of uniform light distribution.

[0064] like Figure 6 As shown, Embodiment 2 of the present invention provides a display module. The difference between the display module provided in Embodiment 2 and the display module provided in Embodiment 1 is that, in Embodiment 2, the first base layer 23 includes a buffer layer 233. The buffer layer 233 can provide protection and stability for the TFT circuit layer and the sound-emitting layer 22.

[0065] It should be noted that the buffer layer 233 in Example 2 has the same function as the buffer layer 233 in Example 1. Both can relieve lattice stress and prevent the formation of dislocations and other defects; help adapt to the difference in thermal expansion coefficients between different materials and reduce stress caused by temperature changes; prevent unwanted chemical reactions between the two materials and maintain the clarity and stability of the interface; prevent defects from the substrate (such as dislocations, microcracks, etc.) from propagating to the upper structure and improve the crystal quality of the upper material.

[0066] like Figure 6 As shown, the second base layer 24 includes a first support layer 231, a second support layer 242, a first backlight layer 232, and a second backlight layer 241. The first backlight layer 232 is located on the side of the control layer 21 away from the touch layer 10, the first support layer 231 is located on the side of the first backlight layer 232 away from the control layer 21, and the second backlight layer 241 is located on the side of the first support layer 231 away from the first backlight layer 232. The second support layer 242 is located between the second backlight layer 241 and the substrate 30. The second base layer 24 with the above structure can support the sound-emitting layer 22 using both the first support layer 231 and the second support layer 242, and has the advantages of easy material sourcing, mature technology, and easy processing. Both the first backlight layer 232 and the second backlight layer 241 can provide uniform light distribution.

[0067] It should be noted that the first support layer 231, the second support layer 242, the first backlight layer 232, and the second backlight layer 241 in Embodiment 2 serve the same function as those in Embodiment 1, and can be made of the same materials. The difference lies in the location of the sound-emitting layer 22 in Embodiment 1 and the location of the sound-emitting layer 22 in Embodiment 2.

[0068] Furthermore, in Embodiment 2, the sound-emitting layer 22 is also placed between the display layer 50 and the substrate 30, which can also avoid the problems of reduced light extraction efficiency caused by the cavity layer of the directional sound-emitting device, reduced light transmittance caused by the limited transparency of the directional sound-emitting device, and the risk that the internal structure of the directional sound-emitting device is visible at certain angles.

[0069] It should be noted that, except for the structure described above, the display module of Embodiment 2 is the same as the display module of Embodiment 1 in all other aspects, and the repeated parts will not be described again.

[0070] Based on the same inventive concept, the present invention also provides an electronic device, including the display module provided in the above embodiments of the present invention. In the embodiments of the present invention, the electronic device may include a mobile phone, tablet computer, smart wearable device, television, laptop computer, monitor, or other device with display function. The present invention does not impose specific limitations on the specific form of the electronic device.

[0071] Since the principle of solving the problem in the electronic device embodiment is similar to that in the above-described display module embodiment, the implementation of the electronic device embodiment can refer to the implementation of the above-described display module embodiment, and the repeated parts will not be described again.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A display module, characterized in that, include: Touch layer with touch functionality; A hybrid layer with directional sound emission and dimming functions, the hybrid layer including a control layer and a sound emission layer, the control layer being located between the touch layer and the sound emission layer; The substrate is located on the side of the sound-emitting layer away from the control layer.

2. The display module according to claim 1, characterized in that, The hybrid layer further includes a first base layer and a second base layer, wherein the first base layer is located between the control layer and the sound-emitting layer, and the second base layer is located between the sound-emitting layer and the substrate.

3. The display module according to claim 2, characterized in that, One of the first base layer and the second base layer includes a first support layer with a support function, and the other of the first base layer and the second base layer includes a second support layer with a support function.

4. The display module according to claim 3, characterized in that, The display module further includes a display layer with light-emitting function, which is located between the control layer and the touch layer. The first base layer includes a first support layer and a first backlight layer with uniform light function. The first support layer is located on the side of the sound-emitting layer away from the second base layer, and the first backlight layer is located on the side of the first support layer away from the sound-emitting layer.

5. The display module according to claim 4, characterized in that, The first base layer also includes a buffer layer with a buffering function, which is located between the first backlight layer and the control layer.

6. The display module according to claim 3, characterized in that, The second base layer includes a second support layer and a second backlight layer with uniform light function. The second backlight layer is located on the side of the sound-emitting layer away from the first base layer, and the second support layer is located between the second backlight layer and the substrate.

7. The display module according to claim 2, characterized in that, The first base layer includes a buffer layer; and / or, The display module further includes a display layer with light-emitting function, the display layer being located between the control layer and the touch layer. The second base layer includes a first support layer, a second support layer, a first backlight layer, and a second backlight layer. The first backlight layer is located on the side of the control layer away from the display layer. The first support layer is located on the side of the first backlight layer away from the control layer. The second backlight layer is located on the side of the first support layer away from the first backlight layer. The second support layer is located between the second backlight layer and the substrate.

8. The display module according to any one of claims 1 to 7, characterized in that, The display module further includes an encapsulation layer and a display layer with light-emitting function. The display layer is located on the side of the control layer away from the sound-emitting layer, and the encapsulation layer is located between the touch layer and the display layer; and / or, The display module also includes a polarizing layer and a cover plate. The polarizing layer is located on the side of the touch layer away from the control layer, and the cover plate is placed on the polarizing layer.

9. The display module according to any one of claims 1 to 7, characterized in that, The sound-emitting layer includes a first electrode, a second electrode, and a plurality of support pillars. The first electrode is located on the side of the control layer away from the touch layer. The second electrode is located between the first electrode and the substrate. The array of a plurality of support pillars is disposed between the first electrode and the second electrode. An air gap is formed between two adjacent support pillars. The sound-generating layer further includes an insulating layer located on the side of the first electrode away from the substrate, and the array of multiple support pillars is disposed between the insulating layer and the second electrode.

10. An electronic device, characterized in that, Includes the display module as described in any one of claims 1 to 9.

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