Display module and display device

Abstract

The invention provides a display module and a display device, and relates to the technical field of display. The display module comprises a display panel, wherein the display panel comprises a light emitting side and a backlight side which are arranged back to back; the near field communication module is located on the backlight side of the display panel; and the electrostatic shielding layer is located on the backlight side of the display panel, the electrostatic shielding layer is provided with a first hollow area, and the orthographic projection of the first hollow area and the orthographic projection of the near field communication module on the display panel are at least partially overlapped. On the premise that normal work of the near field communication module is guaranteed, poor display such as splash screen and water ripples is improved.

Description

Technical Field

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

[0002] Some display devices are equipped with a Near Field Communication (NFC) module, which enables functions such as mobile payment, electronic ticketing, access control, and mobile identity recognition. During use, display devices equipped with NFC modules are prone to display defects such as screen flickering and water ripples. Summary of the invention

[0003] The embodiments of the present disclosure provide a display module and a display device, which improve display defects such as screen flickering and water ripples while ensuring the normal operation of a near field communication module.

[0004] To achieve the above objectives, the embodiments of the present disclosure adopt the following technical solutions:

[0005] On the one hand, a display module is provided, comprising: a display panel, the display panel comprising a light-emitting side and a backlight side arranged opposite to each other; a near-field communication module, the near-field communication module being located on the backlight side of the display panel; an electrostatic shielding layer, the electrostatic shielding layer being located on the backlight side of the display panel, and the electrostatic shielding layer being provided with a first hollow area, the first hollow area and the near-field communication module at least partially overlapping in their orthographic projection on the display panel.

[0006] In some embodiments, the electrostatic shielding layer further includes an electrostatic shielding region surrounding the first hollow region, and the orthographic projection of the near field communication module on the display panel is located within the orthographic projection range of the first hollow region on the display panel.

[0007] In some embodiments, the display panel includes a central area and an edge area surrounding the central area, and the electrostatic shielding area at least partially covers the edge area when its orthographic projection on the display panel is viewed.

[0008] In some embodiments, the display module further includes a heat dissipation layer, wherein the heat dissipation layer is connected to a backlight side of the display panel, and the electrostatic shielding layer is connected to a side of the heat dissipation layer away from the display panel.

[0009] In some embodiments, the heat dissipation layer is provided with a groove, the groove is arranged opposite to the first hollow area, and the groove and the first hollow area form a receiving groove, and at least part of the structure of the near field communication module is located in the receiving groove.

[0010] In some embodiments, a depth of the receiving groove perpendicular to the display panel is greater than or equal to a thickness of the near field communication module perpendicular to the display panel.

[0011] In some embodiments, the electrostatic shielding layer is located on a side of the near field communication module away from the display panel.

[0012] In some embodiments, along a direction away from the display panel, the heat dissipation layer includes a thermal conductive layer and an adhesive layer stacked in sequence, the adhesive layer is provided with a second hollow area, and the second hollow area and the thermal conductive layer form the groove.

[0013] In some embodiments, the display module further includes a control board, the control board is located at a side of the near field communication module away from the display panel, and the near field communication module is fixedly connected to the control board.

[0014] In some embodiments, a side of the control board facing the display panel is in contact with the electrostatic shielding layer.

[0015] In some embodiments, a buffer layer is provided between the near field communication module and the control board, and the buffer layer is bonded to the near field communication module and the control board.

[0016] In some embodiments, the display panel is a flexible display panel, which includes a flat portion, a bending portion, and a binding portion connected in sequence, the binding portion is bent to the backlight side of the flat portion through the bending portion, the heat dissipation layer is connected to the backlight side of the flat portion, and the electrostatic shielding layer is connected to the side of the heat dissipation layer away from the flat portion; the display module also includes a pad, which is located between the binding portion and the electrostatic shielding layer.

[0017] In some embodiments, the display module further includes a driving chip and a conductive layer, the driving chip is bound to a side of the binding portion away from the flat portion, and the conductive layer covers the driving chip.

[0018] On the other hand, a display module is provided, comprising: a display panel, the display panel comprising a light-emitting side and a backlight side arranged opposite to each other; a heat dissipation layer, the heat dissipation layer being connected to the backlight side of the display panel, the heat dissipation layer comprising a first area and a second area surrounding the first area; an electrostatic shielding layer, the electrostatic shielding layer being located on a side of the heat dissipation layer away from the display panel, and an orthographic projection of the electrostatic shielding layer on the heat dissipation layer being located in the second area; and a near field communication module, at least a portion of an orthographic projection of the heat dissipation layer being located in the first area.

[0019] On the other hand, a display device is provided, comprising the display module.

[0020] The display module and display device provided by the embodiments of the present disclosure are provided with an electrostatic shielding layer and a near-field communication module on the backlight side of the display panel, and the electrostatic shielding layer is provided with a first hollow area, and the first hollow area and the near-field communication module at least partially overlap in their orthographic projection on the display panel. Since the conductive material in the first hollow area is removed, the first hollow area will not interfere with or shield the radio frequency field, so that the radio frequency field can pass through the first hollow area and then be received by the near-field communication module. In addition, the electrostatic shielding layer can absorb static charges, thereby preventing static charges from entering the interior of the display panel from the edge of the display panel, thereby improving display defects such as flickering of the display panel. When the display device is wirelessly charged through a wireless charging coil, the electrostatic shielding layer can shield the electromagnetic field generated by the wireless charging coil, thereby preventing the display panel from generating water ripples and other display defects. That is, the display module and display device of the embodiments of the present disclosure improve display defects such as flickering and water ripples while ensuring normal communication of the near-field communication module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 The front view structure of a display device is schematically shown;

[0023] Figure 2 Schematically shows a front view of a display module;

[0024] Figure 3 Schematically shows a rear view of a display module;

[0025] Figure 4 A partial structural exploded view of a display module is schematically shown;

[0026] Figure 5 A scene diagram schematically shows a display device performing near field communication;

[0027] Figure 6 schematically shows a rear view of a near field communication module;

[0028] Figure 7 A cross-sectional view of a near field communication module coil is schematically shown;

[0029] Figure 8 schematically shows a rear view of an electrostatic shield;

[0030] Fig. 9 A partial rear view of the structure of a display module is schematically shown;

[0031] Fig.10 schematically shows a rear view of another electrostatic shielding layer and a near field communication module;

[0032] Fig.11 schematically shows a rear view of another electrostatic shielding layer and a near field communication module;

[0033] Fig.12 A partial structural cross-sectional view of a display module is schematically shown;

[0034] Fig.13 for Figure 3 The cross-sectional rotation diagram about AA in the figure;

[0035] Fig.14 A structural diagram of a control panel is schematically shown;

[0036] Fig.15 A partial structural cross-sectional view of another display module is schematically shown;

[0037] Fig.16 schematically shows a rear view of a heat dissipation layer;

[0038] Fig.17 A rear view of a display panel is schematically shown.

[0039] Reference numerals:

[0040] 100-display module; 200-housing; 300-watch strap;

[0041] 110-cover plate; 120-display panel; 130-heat dissipation layer; 140-conductive layer; 150-electrostatic shielding layer; 160-near field communication module; 170-pad; 180-driving chip; 190-control board;

[0042] 121- flat part; 122- bent part; 123- binding part; 120a- central area; 120b- edge area;

[0043] 101- optical adhesive layer; 102- polarizer; 104- protective film;

[0044] 131 - heat conducting layer; 132 - adhesive layer; 133 - groove; 130a - first area; 130b - second area;

[0045] 161-connecting part; 162-antenna;

[0046] 151 - electrostatic shielding area; 152 - first hollow area;

[0047] 191-connector; 192-binding end; 193-connection end. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0049] In the embodiments of the present disclosure, words such as "first", "second", "third", and "fourth" are used to distinguish between identical or similar items with substantially the same functions and effects. This is only for the purpose of clearly describing the technical solutions of the embodiments of the present disclosure and shall not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0050] In the embodiments of the present disclosure, “plurality” means two or more than two, and “at least one” means one or more than one, unless otherwise clearly and specifically defined.

[0051] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper" and "lower" etc. is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0052] Figure 1 The front view structure of a display device is schematically shown. Figure 1 As shown, some embodiments of the present disclosure provide a display device, which can be any device that displays whether it is moving (e.g., video) or fixed (e.g., still images) and whether it is text or images. More specifically, it is expected that the embodiments can be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, video cameras, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controls and / or displays, displays of camera views (e.g., displays of rear-view cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures (e.g., displays of images of a piece of jewelry), etc. Figure 1In the figure, the display device is a smart watch as an example for illustration. It is understandable that, in addition to the smart watch, the display device can also be other wearable devices with a display module.

[0053] For example, continue to refer to Figure 1 The display device may include a display module 100, a housing 200 and a strap 300, wherein the display module 100 is installed in the housing 200, and the strap 300 is connected to the housing 200. When in use, the strap 300 and the housing 200 are connected to form a ring shape to be worn on the user's wrist.

[0054] Exemplarily, a mainboard and a battery are also provided in the housing 200. The mainboard is electrically connected to the display module 100 to provide an image signal to the display module 100, and the battery is electrically connected to the mainboard to provide power to the mainboard and the display module 100. In actual application, other modules may be provided in the display device according to actual use needs. For example, a wireless charging coil may also be provided in the housing 200, and the wireless charging coil is electrically connected to the mainboard. The wireless charging coil is used to cooperate with the wireless charging base to charge the battery wirelessly.

[0055] Figure 2 Schematically shows a front view of a display module, Figure 3 Schematically shows a rear view of a display module, Figure 4 A partial structural exploded view of a display module is schematically shown, wherein the front view shows the structure of the light-emitting side of the display module 100 , and the rear view shows the structure of the backlight side of the display module 100 .

[0056] like Figure 4 As shown, the display module 100 includes a display panel 120. The display panel 120 may be a liquid crystal display panel (Liquid Crystal Display, LCD for short); the display panel 120 may also be an electroluminescent display panel or a photoluminescent display panel. In the case where the display panel 120 is an electroluminescent display panel, the electroluminescent display panel may be an organic electroluminescent (Organic Light-Emitting Diode, OLED for short) display panel or a quantum dot electroluminescent (Quantum Dot Light Emitting Diode, QLED for short) display panel or a micro light-emitting diode (Micro Light Emitting Diodes, Micro LED for short), etc. In the case where the display panel 120 is a photoluminescent display panel, the photoluminescent display device may be a quantum dot photoluminescent display panel. Some embodiments of the present disclosure are described by taking the display panel 120 as an organic light-emitting diode (Organic Light-Emitting Diode, OLED for short) display panel as an example.

[0057] The display panel 120 includes a light emitting side and a backlight side that are disposed opposite to each other. The light emitting side refers to the side of the display panel 120 that emits light, that is, the side that faces the user when the user views the display panel 120. The backlight side refers to the side of the display panel 120 that is disposed opposite to the light emitting side, that is, the side that is away from the user when the user views the display panel 120.

[0058] Continue to refer Figures 2 to 4 The display module 100 may also be provided with a cover plate 110. The cover plate 110 is located on the light-emitting side of the display panel 120 and is used to protect the display panel 120 and prevent the display panel 120 from being scratched. The cover plate 110 may be a rigid cover plate or a flexible cover plate, and may be a single-layer structure or a multi-layer structure formed by stacking multiple film layers. When the display module 100 is a flexible display module 100, the cover plate 110 is a flexible cover plate. For example, when the cover plate 110 is a single-layer structure, the cover plate 110 can be a glass cover plate with a relatively thin thickness, and the cover plate 110 can also be a single-layer transparent polymer layer such as a single-layer PI (Polyimide) or a single-layer PET (Polyethylene Terephthalate); when the cover plate 110 is a multi-layer structure, along the direction away from the display panel 120, the cover plate 110 includes a first organic layer, an ultra-thin glass layer and a second organic layer stacked in sequence, wherein the adjacent two layers are optically bonded, and the first organic layer and the second organic layer are transparent organic materials.

[0059] Continue to refer Figure 4 A protective film 104 may be provided on the side of the cover plate 110 away from the display panel 120. The protective film 104 is attached to the surface of the cover plate 110 to protect the cover plate 110 during the process of assembling the display module 100 to the display device and prevent the cover plate 110 from being scratched. After the display device is assembled, the protective film 104 may also be torn off. For example, the protective film 104 may be made of an organic material with good light transmittance (such as acrylic).

[0060] A polarizer 102 may be further disposed between the cover plate 110 and the display panel 120. Exemplarily, the polarizer 102 is a circular polarizer, which may filter out light waves perpendicular to the direction of the display panel 120, thereby improving the clarity of the display panel 120.

[0061] An optical adhesive layer 101 may be further provided between the polarizing plate 102 and the cover plate 110, and the optical adhesive layer 101 may bond the cover plate 110 to the polarizing plate 102. Exemplarily, the optical adhesive layer 101 is made of an optical resin adhesive (T-OCA) with good light transmittance.

[0062] Continue to refer Figure 3 and Figure 4, the display module 100 also includes a near field communication module 160 located on the backlight side of the display panel 120, and the near field communication module 160 refers to a module capable of near field communication. Near field communication is a short-range high-frequency radio communication technology. For example, the communication distance of near field communication is within 10 cm, the frequency is 13.56 MHz, and the transmission speed is 106 Kbit / s, 212 Kbit / s or 424 Kbit / s. The working modes of near field communication include passive mode and active mode. In passive mode: the master device provides a radio frequency field, the slave device receives the radio frequency field, and converts the radio frequency field into an electrical signal, thereby completing the data transmission between the master device and the slave device. In active mode: the master device provides a radio frequency field, the slave device receives the radio frequency field, and converts the radio frequency field into an electrical signal, thereby completing the data transmission between the master device and the slave device; at the same time, the slave device provides a radio frequency field, the master device receives the radio frequency field, and converts the radio frequency field into an electrical signal, thereby completing the data transmission between the slave device and the master device.

[0063] In the embodiment of the present disclosure, the working mode of the near field communication module 160 can be a passive mode or an active mode, that is, the display device can act as a master device or a slave device in the near field communication. Figure 5 The figure schematically shows a scene diagram of a display device performing near field communication. Figure 5 As shown, the display device acts as a slave device in near field communication and receives the radio frequency field from the master device RFID.

[0064] in, Figure 5 The figure shows a scene in which the light-emitting side of the display module 100 faces the host device during near-field communication, and the host device is a radio frequency identification (RFID) device. In actual application, the backlight side of the display module 100 may also face the host device RFID, which is not limited in the embodiments of the present disclosure. For the convenience of description, the following is a schematic description of the case in which the light-emitting side of the display module 100 faces the host device RFID during near-field communication.

[0065] Figure 6 The figure schematically shows a rear view of a near field communication module. Figure 6 As shown, the near field communication module 160 may include an antenna 162 and a connection portion 161. The antenna 162 is provided with a plurality of conductive coils, which can receive a radio frequency field and convert the received radio frequency field into an electrical signal. The connection portion 161 is used to electrically connect the antenna 162 and an external circuit (e.g., a control board 190) to transmit the electrical signal generated by the antenna 162 to the external circuit.

[0066] Figure 7 Schematically shows a cross-sectional view of a near field communication module coil. Figure 7 As shown, the near field communication module 160 includes an adhesive layer 1, a first mask layer 2, a first routing layer 3, a substrate layer 4, a second routing layer 5, a second mask layer 6 and a barrier layer 7. The adhesive layer 1 is used to bond the near field communication module 160 to other structures or film layers of the display module 100 to fix the near field communication module 160. The substrate layer 4 is used to support and connect the first routing layer 3 and the second routing layer 5, and the material of the substrate layer 4 can be PI. The first routing layer 3 and the second routing layer 5 are used to form a plurality of conductive coils, and the first routing layer 3 and the second routing layer 5 can be patterned copper films. The first mask layer 2 and the second mask layer 6 are masks for wiring. The barrier layer 7 can be made of an anti-oxidation magnetic isolation material such as ferrous salts.

[0067] Understandably, Figure 6 and Figure 7 The shape and cross-sectional structure of the near field communication module 160 are merely schematic illustrations, and the embodiment of the present disclosure does not limit the structure and shape of the near field communication module 160 .

[0068] Existing display devices equipped with near-field communication modules often have poor display during use. For example, when a display device is provided with a wireless charging coil, water ripple display is likely to occur when the display device is wirelessly charged through the wireless charging coil. For another example, after an electrostatic test is performed on the display device, a flickering display is likely to occur.

[0069] After research, the inventors found that the reason why the display device of the prior art has the above-mentioned poor display is that the copper foil is removed. Specifically, the display device of the prior art removes the copper foil to prevent the copper foil from interfering with and shielding the signal of the near-field communication module. After the copper foil is lost, the static charge in the display device accumulates and enters the interior of the display panel along the edge of the display panel, causing the characteristics of the transistors inside the display panel to shift, resulting in poor flickering display. In addition, after the copper foil is lost, the electromagnetic field generated by the display device during wireless charging cannot be shielded, causing the display panel to be interfered by the electromagnetic field and display poor water ripples.

[0070] In view of this, the display module 100 of the embodiment of the present disclosure includes an electrostatic shielding layer 150. The electrostatic shielding layer 150 can absorb static charges, thereby preventing static charges from entering the interior of the display panel 120 from the edge of the display panel 120, thereby improving display defects such as flickering of the display panel 120. In addition, when the display device is wirelessly charged through a wireless charging coil, the electrostatic shielding layer 150 can shield the electromagnetic field generated by the wireless charging coil, thereby preventing the display panel 120 from generating water ripples and other display defects.

[0071] The electrostatic shielding layer 150 may be made of a conductive material (eg, metal). Exemplarily, the electrostatic shielding layer 150 is a copper foil with a thickness of 35 μm.

[0072] The electrostatic shielding layer 150 may be arranged parallel to the light emitting surface of the display panel 120, and the electrostatic shielding layer 150 is located on the backlight side of the display panel 120. The electrostatic shielding layer 150 may be located between the near field communication module 160 and the display panel 120, or may be located on the side of the near field communication module 160 away from the display panel 120. For example, when the main device providing the radio frequency field is located on the light emitting side of the display panel 120, the electrostatic shielding layer 150 is arranged on the side of the near field communication module 160 away from the display panel 120; when the main device providing the radio frequency field is located on the backlight side of the display panel 120, the electrostatic shielding layer 150 is arranged between the near field communication module 160 and the display panel 120.

[0073] Figure 8 The figure schematically shows a rear view of an electrostatic shielding layer. Figure 8 As shown, the electrostatic shielding layer 150 is provided with a first hollow area 152. Among them, the first hollow area 152 is a part of the electrostatic shielding layer 150, and the conductive material in the first hollow area 152 is removed. The first hollow area 152 and the orthographic projection of the near field communication module 160 on the display panel 120 at least partially overlap, that is, at least part of the first hollow area 152 is arranged opposite to the near field communication module 160. Since the conductive material in the first hollow area 152 is removed, there is no conductive material in at least part of the area of ​​the electrostatic shielding layer 150 that is opposite to the near field communication module 160, which will not interfere with or shield the radio frequency field, so that the radio frequency field can pass through the first hollow area 152 and then be received by the near field communication module 160.

[0074] The orthographic projections of the first hollow area 152 and the near field communication module 160 on the display panel 120 may partially overlap or completely overlap. When the orthographic projections of the first hollow area 152 and the near field communication module 160 on the display panel 120 completely overlap, the orthographic projection of the near field communication module 160 on the display panel 120 may be located within the orthographic projection range of the first hollow area 152 on the display panel 120, thereby further reducing the interference and shielding between the electrostatic shielding layer 150 and the radio frequency field.

[0075] In the display module 100 provided by the embodiment of the present disclosure, an electrostatic shielding layer 150 and a near field communication module 160 are provided on the backlight side of the display panel 120, and the electrostatic shielding layer 150 is provided with a first hollow area 152, and the orthographic projections of the first hollow area 152 and the near field communication module 160 on the display panel 120 at least partially overlap. Since the conductive material in the first hollow area 152 is removed, the first hollow area 152 will not interfere with or shield the radio frequency field, so that the radio frequency field can pass through the first hollow area 152 and then be received by the near field communication module 160. In addition, the electrostatic shielding layer 150 can absorb static charges, thereby preventing static charges from entering the interior of the display panel 120 from the edge of the display panel 120, thereby improving the display defects such as the flickering of the display panel 120. When the display device is wirelessly charged through a wireless charging coil, the electrostatic shielding layer 150 can shield the electromagnetic field generated by the wireless charging coil, preventing the display panel 120 from generating water ripples and other display defects. That is, the display module 100 of the embodiment of the present disclosure improves display defects such as screen flickering and water ripples while ensuring normal communication of the near field communication module 160.

[0076] Continue to refer Figure 8 , the electrostatic shielding layer 150 also includes an electrostatic shielding area 151 surrounding the first hollow area 152, and the orthographic projection of the near field communication module 160 on the display panel 120 is located within the orthographic projection range of the first hollow area 152 on the display panel 120. Among them, the electrostatic shielding area 151 is a part of the electrostatic shielding layer 150, and a conductive material is provided in the electrostatic shielding area 151, so that the electrostatic shielding area 151 can absorb static charge and shield at least part of electromagnetic interference. For example, when the electrostatic shielding layer 150 is a copper foil, the hollowed-out area in the copper foil is the first hollowed-out area 152, and the area that is not hollowed-out in the copper foil is the electrostatic shielding area 151.

[0077] Fig. 9 The figure schematically shows a partial rear view of a display module. Fig. 9 As shown, the shape of the first hollow area 152 can be the same as or similar to the shape of the near-field communication module 160 , while reducing the interference and shielding effect of the electrostatic shielding layer 150 on the radio frequency field, the area of ​​the electrostatic shielding area 151 is increased, thereby improving the electrostatic charge absorption capacity and electromagnetic interference shielding capacity of the electrostatic shielding layer 150 .

[0078] Fig.10 Schematically shows another electrostatic shielding layer and a rear view of a near field communication module, Fig.11 Schematically shows another electrostatic shielding layer and a rear view of a near field communication module. Fig.10 and Fig.11As shown, the first hollow area 152 is circular, the electrostatic shielding area 151 is annular, and the electrostatic shielding area 151 is sleeved outside the first hollow area 152. In this way, the area of ​​the first hollow area 152 can be increased, thereby reducing the interference and shielding of the electrostatic shielding layer 150 on the radio frequency field. In addition, after increasing the area of ​​the first hollow area 152, the display module 100 can be compatible with near-field communication modules 160 of other shapes and sizes.

[0079] The electrostatic shielding region 151 may extend along the periphery of the display panel 120. Exemplarily, the periphery of the electrostatic shielding region 151 is flush with the periphery of the display panel 120. Of course, the periphery of the electrostatic shielding region 151 may be retracted a certain distance relative to the periphery of the display panel 120, or the periphery of the electrostatic shielding region 151 may protrude a certain distance from the periphery of the display panel 120.

[0080] Fig.17 Schematically shows a rear view of a display panel. Fig.17 As shown, the display panel 120 includes a central area 120 a and an edge area 120 b surrounding the central area 120 a , and the orthographic projection of the electrostatic shielding area 151 on the display panel 120 at least partially covers the edge area 120 b .

[0081] Exemplarily, the orthographic projection of the electrostatic shielding area 151 on the display panel 120 completely covers the edge area 120 b .

[0082] Since static charge can easily enter the interior of the display panel 120 from the periphery of the display panel 120, when the static shielding area 151 extends along the periphery of the display panel 120, the static shielding area 151 can absorb the static charge near the periphery of the display panel 120, thereby preventing static charge from entering the interior of the display panel 120 along the edge of the display panel 120.

[0083] Of course, the structure of the electrostatic shielding layer 150 is not limited to the above structure. For example, in the rear view direction, the electrostatic shielding layer 150 can also be C-shaped, etc.

[0084] Continue to refer Figure 4 The display module 100 further includes a heat dissipation layer 130, which is connected to the backlight side of the display panel 120 and is used to absorb the heat generated during the operation of the display panel 120, thereby reducing the temperature of the display panel 120. In addition, the heat dissipation layer 130 can also protect the backlight side of the display panel 120.

[0085] Fig.12 The figure schematically shows a partial structural cross-sectional view of a display module. Fig.12As shown, the heat dissipation layer 130 may include a heat conductive layer 131 and an adhesive layer 132 , wherein the heat conductive layer 131 is connected to the backlight side of the display panel 120 , and the adhesive layer 132 is connected to the side of the heat conductive layer 131 away from the display panel 120 .

[0086] Exemplarily, the material of the heat-conducting layer 131 is PET. For example, the heat-conducting layer 131 is a PET foam layer, and the thickness of the heat-conducting layer 131 is 60 μm.

[0087] Exemplarily, the adhesive layer 132 includes a foam adhesive (Foam) layer and an Embo adhesive (Embo) layer, the Embo adhesive layer is adhered to the heat conducting layer 131 , and the foam adhesive layer is adhered to a side of the Embo adhesive layer away from the heat conducting layer 131 .

[0088] In the related art, the heat dissipation layer 130 is easily squeezed by other modules in the display device, so that the thickness of the squeezed part of the heat dissipation layer 130 is thinner, and the thickness of the unsqueezed part is thicker, that is, the thickness of different areas of the heat dissipation layer 130 is different. When the display module 100 is observed from the light-emitting side of the display module 100, it is easy to observe that the display module 100 has a mold print, which affects the user experience.

[0089] Continue to refer Fig.12 , the electrostatic shielding layer 150 can be connected to the side of the heat dissipation layer 130 away from the display panel 120. When the electrostatic shielding layer 150 is squeezed by other modules in the display device, the electrostatic shielding layer 150 can disperse the squeeze force and transfer it to the heat dissipation layer 130, so that the heat dissipation layer 130 is subjected to a more uniform force, and the phenomenon of uneven thickness of the heat dissipation layer 130 under squeeze is improved, thereby improving the mold printing phenomenon. In addition, when the electrostatic shielding layer 150 is made of a metal material, the hardness of the metal material is usually higher than that of the heat dissipation layer 130, and it is less likely to deform, further improving the mold printing phenomenon.

[0090] Fig.16 A rear view of a heat dissipation layer is schematically shown. Fig.16 As shown, the heat dissipation layer 130 may include a first area 130a and a second area 130b surrounding the first area 130a. The first area 130a and the second area 130b are both areas divided on the heat dissipation layer 130. For example, the first area 130a is a circular area located in the middle of the heat dissipation layer 130, and the second area 130b is a circular area surrounding the first area 130a. Of course, the embodiment of the present disclosure does not limit the shapes of the first area 130a and the second area 130b, and the first area 130a may also be a polygon such as a rectangle, a triangle, or other irregular shapes.

[0091] The orthographic projection of the electrostatic shielding layer 150 on the heat dissipation layer 130 is located in the second area 130b. At least part of the orthographic projection of the near field communication module 160 on the heat dissipation layer 130 is located in the first area 130a. Since the electrostatic shielding layer 150 is not provided in the first area 130a, the first area 130a will not interfere with or shield the radio frequency field, so that the radio frequency field can pass through the first area 130a and then be received by the near field communication module 160. In addition, the electrostatic shielding layer 150 can absorb static charges, thereby preventing static charges from entering the inside of the display panel 120 from the edge of the display panel 120, thereby improving the display defects such as flickering of the display panel 120. When the display device is wirelessly charged through a wireless charging coil, the electrostatic shielding layer 150 can shield the electromagnetic field generated by the wireless charging coil, thereby preventing the display panel 120 from generating water ripples and other display defects. That is, the display module 100 of the embodiment of the present disclosure improves the display defects such as flickering and water ripples while ensuring the normal communication of the near field communication module 160.

[0092] Fig.13 for Figure 3 The cross-sectional rotation diagram of AA in . Fig.13 As shown, the heat dissipation layer 130 is provided with a groove 133 , the groove 133 is arranged opposite to the first hollow area 152 , and the groove 133 and the first hollow area 152 form a receiving groove C.

[0093] The groove 133 is disposed on the side of the heat dissipation layer 130 facing the electrostatic shielding layer 150. When the heat dissipation layer 130 includes the thermal conductive layer 131 and the adhesive layer 132, the depth of the groove 133 may be less than the thickness of the adhesive layer 132, the depth of the groove 133 may be equal to the thickness of the adhesive layer 132, or the depth of the groove 133 may be greater than the thickness of the adhesive layer 132. The depth of the groove 133 refers to the dimension of the groove 133 along the direction perpendicular to the display panel 120, and the thickness of the adhesive layer 132 refers to the dimension of the adhesive layer 132 along the direction perpendicular to the display panel 120.

[0094] When the depth of the groove 133 is less than the thickness of the adhesive layer 132, for example, a portion of the adhesive layer 132 may be thinned to form the groove 133. For example, the adhesive layer 132 includes a foam adhesive layer and a mesh adhesive layer, a portion of the foam adhesive layer is hollowed out, and the hollowed out region and the mesh adhesive layer form the groove 133.

[0095] When the depth of the groove 133 is equal to the thickness of the adhesive layer 132. Exemplarily, the adhesive layer 132 is provided with a second hollow area, the second hollow area is arranged opposite to the first hollow area 152, and the second hollow area and the heat conductive layer 131 form a groove 133. The second hollow area is a part of the adhesive layer 132, and the adhesive layer 132 in the second hollow area is completely removed. For example, the adhesive layer 132 includes a foam adhesive layer and a mesh adhesive layer, a part of the foam adhesive layer is hollowed out, a part of the mesh adhesive layer is hollowed out, and the hollow area of ​​the foam adhesive layer is opposite to the hollow area of ​​the mesh adhesive layer, and the hollow area of ​​the foam adhesive layer and the hollow area of ​​the mesh adhesive layer form a second hollow area.

[0096] When the depth of the groove 133 is less than or equal to the thickness of the adhesive layer 132 , the heat-conducting layer 131 is not provided with a hollow area or is not thinned, so as to prevent the heat-conducting layer 131 from becoming thinner and affecting the heat dissipation effect.

[0097] When the depth of the groove 133 is greater than the thickness of the adhesive layer 132. Exemplarily, the adhesive layer 132 is provided with a second hollow region, the heat-conducting layer 131 includes a thinning region opposite to the second hollow region, and the thickness of the heat-conducting layer 131 in the thinning region is relatively thin. The second hollow region and the thinning region together enclose the groove 133.

[0098] At least part of the structure of the near field communication module 160 may be located in the receiving groove C. On the one hand, the receiving groove C may limit the position of the near field communication module 160 in a direction parallel to the display panel 120 ; on the other hand, part or all of the structure of the near field communication module 160 may be located in the receiving groove C to reduce the thickness of the display module 100 .

[0099] The depth h of the accommodating groove C perpendicular to the display panel 120 can be greater than or equal to the thickness d of the near field communication module 160 perpendicular to the display panel 120 , so that the near field communication module 160 can be completely accommodated in the accommodating groove C, thereby further reducing the thickness of the display module 100 .

[0100] Exemplarily, the difference between the depth h of the accommodation groove C and the thickness d of the near field communication module 160 is 0.05 mm to 0.15 mm.

[0101] Of course, the depth h of the groove C perpendicular to the display panel 120 may also be less than the thickness d of the NFC module 160 perpendicular to the display panel 120. At this time, part of the structure of the NFC module 160 protrudes from the groove C perpendicular to the display panel 120.

[0102] In actual application, the adhesive layer 1 of the near field communication module 160 may be bonded to the heat conductive layer 131 to fix the near field communication module 160 .

[0103] Continue to refer Figure 3 , Figure 4 as well as Fig.13 , the display module 100 may further include a control board 190. The control board 190 is electrically connected to the display panel 120 to provide an image signal to the display panel 120. The control board 190 may also be electrically connected to the near field communication module 160 to receive an electrical signal from the near field communication module 160. The control board 190 may be a main flexible printed circuit (MFPC), including one or more layers of flexible printed circuits. For example, the control board 190 includes two layers of flexible printed circuits, or the control board 190 includes five layers of flexible printed circuits. The control board 190 in the disclosed embodiment is illustrated by taking a two-layer flexible printed circuit as an example.

[0104] Fig.14 The structure of a control panel is schematically shown. Fig.14 As shown, the control board 190 may include a connector 191, which is connected to the main board of the display device to achieve electrical connection between the control board 190 and the main board of the display device. The control board 190 may also include a binding end 192, which is bound to the display panel 120 to achieve electrical connection between the control board 190 and the display panel 120. The control board 190 may also include a connection end 193, which is electrically connected to the near field communication module 160.

[0105] The control board 190 may be located at a side of the near field communication module 160 away from the display panel 120 .

[0106] Exemplarily, the orthographic projections of the control board 190 and the near field communication module 160 on the display panel 120 at least partially overlap. That is, the control board 190 and the receiving groove C enclose a space, and the near field communication module 160 is confined in this space, thereby preventing the near field communication module 160 from being displaced and escaping from the receiving groove C when subjected to vibration. For example, the near field communication module 160 is located between the heat conductive layer 131 and the control board 190, so that the heat conductive layer 131 and the control board 190 cooperate to jointly define the position of the near field communication module 160 in a direction perpendicular to the display panel 120.

[0107] The near field communication module 160 can be fixedly connected to the control board 190. On the one hand, the position of the near field communication module 160 can be limited by the control board 190 to prevent the near field communication module 160 from being disconnected from the control board 190 when it is vibrated; on the other hand, since the near field communication module 160 and the control board 190 are fixedly connected, when assembling the display module 100, the near field communication module 160 and the control board 190 can be assembled as a whole and connected to the display panel 120, which reduces the number of assembly processes and the difficulty of assembly compared to separately connecting the near field communication module 160 and the control board 190 to the display panel 120.

[0108] Exemplarily, the connection portion 161 of the near field communication module 160 is welded to the connection end 193 of the control board 190. For example, the connection portion 161 of the near field communication module 160 and the connection end 193 of the control board 190 are welded in advance to form an integrated structure before entering the assembly process of the display module 100. That is, the near field communication module 160 and the control board 190 are integrated materials.

[0109] A side of the control board 190 facing the display panel 120 may be in contact with the electrostatic shielding layer 150 , so that static charges absorbed by the electrostatic shielding layer 150 may be released through the control board 190 .

[0110] Exemplarily, a partial area of ​​the control board 190's orthographic projection on the electrostatic shielding layer 150 is located within the electrostatic shielding area 151 so that the control board 190 is in contact with the electrostatic shielding area 151, and a partial area of ​​the control board 190's orthographic projection on the electrostatic shielding layer 150 is located within the first hollow area 152 so that the control board 190 limits the position of the near field communication module 160.

[0111] There may be a gap between the near field communication module 160 and the control board 190 in a direction perpendicular to the display panel 120. When the near field communication module 160 is vibrated, it is easy to cause relative displacement with the control board 190, thereby disconnecting the near field communication module 160 and the control board 190, resulting in failure of the near field communication module 160. In order to improve the anti-seismic performance of the display device, a buffer layer may be provided between the near field communication module 160 and the control board 190, and the buffer layer is bonded to the near field communication module 160 and the control board 190, so that the near field communication module 160, the buffer layer and the control board 190 are connected as a whole, and relative displacement is not easy to occur.

[0112] Exemplarily, the buffer layer is adhesive and is filled between the near field communication module 160 and the control board 190 .

[0113] Continue to refer Fig.13 , Fig.13 2 shows a partial structural cross-sectional view of the display module 100 when the display panel 120 is a flexible display panel 120. When the display panel 120 is a flexible display panel 120, the display panel 120 may include a flat portion 121, a bent portion 122, and a binding portion 123 connected in sequence.

[0114] The flat portion 121 may include a display area and a non-display area. The display area may be provided with a plurality of sub-pixels, a plurality of data lines, and a plurality of gate lines, and the non-display area may be provided with a scan drive circuit, which is electrically connected to the gate lines. The binding portion 123 is provided with a binding end 192, so that the binding end 192 of the control board 190 is bound to the binding portion 123 through the binding end 192. The bending portion 122 connects the flat portion 121 and the binding portion 123, and the binding portion 123 is bent to the backlight side of the flat portion 121 through the bending portion 122 to reduce the frame width of the display device.

[0115] The heat dissipation layer 130 and the electrostatic shielding layer 150 are located between the flat portion 121 and the binding portion 123 , and the heat dissipation layer 130 is connected to the backlight side of the flat portion 121 , and the electrostatic shielding layer 150 is connected to the side of the heat dissipation layer 130 away from the flat portion 121 .

[0116] The display module 100 may further include a pad 170, which is located between the binding portion 123 and the electrostatic shielding layer 150, with one side of the pad 170 connected to the binding portion 123 and the other side of the pad 170 connected to the electrostatic shielding layer 150 to fix the binding portion 123 and prevent the binding portion 123 from rebounding through the bending portion 122.

[0117] Exemplarily, adhesive is provided on both sides of the pad 170, and the pad 170 is bonded to the binding portion 123 and the electrostatic shielding layer 150 through the adhesive. The thickness of the adhesive may be 10 μm.

[0118] Exemplarily, the material of the cushion block 170 is PET. For example, the cushion block 170 is PET foam, and the thickness of the cushion block 170 may be 50 μm.

[0119] Fig.15 A partial structural cross-sectional view of another display module is schematically shown. Fig.15 As shown, the display panel 120 may also be a rigid display panel 120, in which case the display module 100 further includes a flexible circuit board FPC, one end of which is bound to the display panel 120, and the other end of which is bent to the backlight side of the display panel 120 and electrically connected to the control board 190. One side of the pad 170 is connected to the flexible circuit board FPC, and the other side of the pad 170 is connected to the electrostatic shielding layer 150.

[0120] Continue to refer Fig.13 and Fig.15, the display module 100 also includes a driver chip 180. The driver chip 180 can be electrically connected to the data line and the scan drive circuit to provide a data signal to the data line and a scan signal to the scan drive circuit. When the display panel 120 is a flexible display panel 120, the driver chip 180 can be bound to the side of the binding portion 123 away from the flat portion 121; when the display panel 120 is a rigid display panel 120, the driver chip 180 can be bound to a flexible circuit board FPC (COF packaging) or to the display panel 120 (COG packaging).

[0121] Continue to refer Fig.13 and Fig.15 The display module 100 may further include a conductive layer 140, and the conductive layer 140 covers the driving chip 180. The conductive layer 140 may be made of a conductive material with ductility. For example, the conductive layer 140 may be conductive cloth, copper foil, gold foil, lithium, etc. When the conductive layer 140 is conductive cloth, the thickness of the conductive cloth may be 60 μm.

[0122] The conductive layer 140 covers the driving chip 180 to prevent the driving chip 180 from being interfered by static electricity, and isolates the driving chip 180 from the external environment to prevent the driving chip 180 from being corroded.

[0123] For example, the conductive layer 140 may also cover a side of the control board 190 away from the display panel 120. The control board 190 is prevented from being interfered by static electricity, and the control board 190 is isolated from the external environment, so as to prevent the driving chip 180 from being corroded.

[0124] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display module, characterized in that: include: A display panel, the display panel comprising a light emitting side and a backlight side arranged opposite to each other; A near field communication module, wherein the near field communication module is located on the backlight side of the display panel; An electrostatic shielding layer is located on the backlight side of the display panel, and the electrostatic shielding layer is provided with a first hollow area, and the first hollow area and the orthographic projection of the near field communication module on the display panel at least partially overlap.

2. The display module according to claim 1, characterized in that: The electrostatic shielding layer further includes an electrostatic shielding area surrounding the first hollow area, and the orthographic projection of the near field communication module on the display panel is located within the orthographic projection range of the first hollow area on the display panel.

3. The display module according to claim 2, characterized in that: The display panel includes a central area and an edge area surrounding the central area, and the orthographic projection of the electrostatic shielding area on the display panel at least partially covers the edge area.

4. The display module according to any one of claims 1 to 3, characterized in that: The display module further comprises a heat dissipation layer, wherein the heat dissipation layer is connected to the backlight side of the display panel, and the electrostatic shielding layer is connected to a side of the heat dissipation layer away from the display panel.

5. The display module according to claim 4, characterized in that: The heat dissipation layer is provided with a groove, the groove is arranged opposite to the first hollow area, and the groove and the first hollow area form a receiving groove, and at least a part of the structure of the near field communication module is located in the receiving groove.

6. The display module according to claim 5, characterized in that: The depth of the accommodating groove perpendicular to the display panel is greater than or equal to the thickness of the near field communication module perpendicular to the display panel.

7. The display module according to claim 6, characterized in that: The electrostatic shielding layer is located at a side of the near field communication module away from the display panel.

8. The display module according to claim 5, characterized in that: Along the direction away from the display panel, the heat dissipation layer includes a heat conductive layer and an adhesive layer which are stacked in sequence, the adhesive layer is provided with a second hollow area, and the second hollow area and the heat conductive layer form the groove.

9. The display module according to any one of claims 1 to 3, characterized in that: The display module further includes a control board, which is located at a side of the near field communication module away from the display panel, and the near field communication module is fixedly connected to the control board.

10. The display module according to claim 9, characterized in that: A side of the control board facing the display panel contacts the electrostatic shielding layer.

11. The display module according to claim 9, characterized in that: A buffer layer is provided between the near field communication module and the control board, and the buffer layer is bonded to the near field communication module and the control board.

12. The display module according to claim 4, characterized in that: The display panel is a flexible display panel, comprising a flat portion, a bent portion and a binding portion connected in sequence, the binding portion being bent to the backlight side of the flat portion through the bent portion, the heat dissipation layer being connected to the backlight side of the flat portion, and the electrostatic shielding layer being connected to a side of the heat dissipation layer away from the flat portion; The display module further includes a pad, and the pad is located between the binding portion and the electrostatic shielding layer.

13. The display module according to claim 12, characterized in that: The display module further includes a driving chip and a conductive layer. The driving chip is bound to a side of the binding portion away from the flat portion, and the conductive layer covers the driving chip.

14. A display module, characterized in that: include: A display panel, the display panel comprising a light emitting side and a backlight side arranged opposite to each other; A heat dissipation layer, the heat dissipation layer is connected to the backlight side of the display panel, the heat dissipation layer comprises a first area and a second area surrounding the first area; an electrostatic shielding layer, wherein the electrostatic shielding layer is located on a side of the heat dissipation layer away from the display panel, and an orthographic projection of the electrostatic shielding layer on the heat dissipation layer is located in the second region; A near field communication module, wherein at least a portion of an orthographic projection of the heat dissipation layer is located within the first area.

15. A display device, characterized in that: Comprising the display module as claimed in any one of claims 1 to 14.

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