Display device and electronic equipment

Abstract

The display device comprises a back shell (DD), a backlight module (BLU) and a display module (PNL) which are sequentially stacked. The display device has an NFC wiring area (CC) for arranging an NFC coil (LL); the NFC coil (LL) is arranged in the display module (PNL); an iron oxide layer (FF) overlapping the NFC wiring area (CC) is arranged between the back shell (DD) and the back shell (E1) of the backlight module (BLU), and / or the back shell (E1) of the backlight module (BLU) has an opening hole overlapping the NFC wiring area (CC), and / or at least part of the area overlapping the NFC wiring area (CC) of the back shell (DD) and the back shell (E1) of the backlight module (BLU) adopts a non-metal material. The display device can improve the strength of the signal magnetic field.

Description

Technical Field

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

[0002] Compared to existing contactless radio frequency identification (RFID), Bluetooth, infrared, and other short-range wireless communication technologies, NFC (Near Field Communication) technology offers advantages such as extremely high security (transmission distance <10cm), the ability to both read and write information, and low power consumption. Integrating the NFC coil into the display screen offers advantages such as simple manufacturing process, no increase in module thickness, and simple module structure. However, display devices with integrated NFC coils suffer from weak near-field communication signal magnetic fields, making it difficult to achieve stable near-field communication functionality.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a display device and electronic device that improves the strength of the signal magnetic field.

[0005] According to one aspect of this disclosure, a display device is provided, comprising a back cover, a backlight module, and a display module arranged in sequence; the display device has an NFC wiring area for disposing of an NFC coil; the NFC coil is disposed in the display module.

[0006] According to one embodiment of the present disclosure, the back cover of the backlight module is made of metal; the back cover of the backlight module has an opening area overlapping the NFC wiring area; and the back cover of the backlight module has an opening in the opening area.

[0007] According to one embodiment of the present disclosure, the back cover of the backlight module has an opening in the NFC wiring area; the edge of the opening coincides with the edge of the opening area.

[0008] According to one embodiment of this disclosure, the back cover of the backlight module is provided with a plurality of openings in the NFC wiring area.

[0009] According to one embodiment of this disclosure, the NFC coil includes a body trace located in the display area;

[0010] The body traces are arranged symmetrically about the axis of symmetry; the opening area is arranged symmetrically about the axis of symmetry of the body traces.

[0011] According to one embodiment of the present disclosure, the NFC wiring area includes a first NFC wiring area located in the display area and a second NFC wiring area located in the peripheral area;

[0012] The opening area covers at least a portion of the NFC first wiring area.

[0013] According to one embodiment of the present disclosure, the NFC wiring area includes a first NFC wiring area located in the display area and a second NFC wiring area located in the peripheral area;

[0014] The geometric center of the opening area coincides with the geometric center of the first wiring area of ​​the NFC.

[0015] According to one embodiment of this disclosure, the back cover is made of a metal material; the display device has a ferrite layer disposed between the back cover and the back cover of the backlight module.

[0016] According to one embodiment of this disclosure, the ferrite layer is disposed on the surface of the back cover of the backlight module away from the display module.

[0017] According to one embodiment of this disclosure, the orthographic projection of the ferrite layer onto the display module covers the NFC wiring area.

[0018] According to one embodiment of the present disclosure, the NFC wiring area includes a first NFC wiring area located in the display area and a second NFC wiring area located in the peripheral area;

[0019] The ferrite layer covers at least a portion of the first wiring area of ​​the NFC.

[0020] According to one embodiment of this disclosure, the NFC coil includes a body trace located in the display area;

[0021] The ferrite layer covers the body traces.

[0022] According to one embodiment of this disclosure, the NFC coil includes a body trace located in the display area;

[0023] The body traces are arranged symmetrically about the axis of symmetry of the body traces; the ferrite layer is arranged symmetrically about the axis of symmetry of the body traces.

[0024] According to one embodiment of the present disclosure, the back cover is made of a metal material; the display device has a ferrite layer disposed between the back cover and the back cover of the backlight module.

[0025] The ferrite layer covers at least a portion of the opening area.

[0026] According to one embodiment of this disclosure, the ferrite layer covers the opening region.

[0027] According to one embodiment of this disclosure, the back cover is made of a non-metallic material.

[0028] According to one embodiment of this disclosure, at least a portion of the area where the back cover overlaps with the NFC wiring area is made of a non-metallic material; at least a portion of the area where the back cover of the backlight module overlaps with the NFC wiring area is made of a non-metallic material.

[0029] According to one embodiment of this disclosure, both the back cover and the back cover of the backlight module are made of non-metallic materials.

[0030] According to another aspect of this disclosure, an electronic device is provided, including the display device described above.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0033] Figure 1 This is a schematic diagram of the structure of a display device in one embodiment of the present disclosure; wherein the back cover and the back cover of the backlight module are made of non-metallic materials.

[0034] Figure 2 This is a schematic diagram of the structure of a display device in one embodiment of the present disclosure; wherein the back cover of the backlight module is made of non-metallic material, and the back shell is made of metallic material.

[0035] Figure 3 This is a schematic diagram of the structure of a display device in one embodiment of the present disclosure; wherein the back cover is made of non-metallic material and the back cover of the backlight module is made of metallic material.

[0036] Figure 4 This is a schematic diagram of the structure of a display device in one embodiment of the present disclosure; wherein the back cover and the back cover of the backlight module are made of metal material.

[0037] Figure 5 This is a schematic diagram of the backlight module in one embodiment of the present disclosure.

[0038] Figure 6 This is a top view of the display device in one embodiment of the present disclosure.

[0039] Figure 7 This is a top view of the NFC coil in one embodiment of the present disclosure.

[0040] Figure 8 This is a schematic diagram of the structure of the wiring body in one embodiment of the present disclosure.

[0041] Figure 9 This is a schematic diagram of the structure of the wiring body in one embodiment of the present disclosure.

[0042] Figure 10 This is a schematic diagram of the structure of the trace body and the ferrite layer in one embodiment of the present disclosure.

[0043] Figure 11 This is a schematic diagram of the structure of the trace body and the ferrite layer in one embodiment of the present disclosure.

[0044] Figure 12 This is a schematic diagram of the structure of the trace body and the ferrite layer in one embodiment of the present disclosure.

[0045] Figure 13 This is a structural schematic diagram showing the relative positional relationship between the trace body and the opening area in one embodiment of this disclosure.

[0046] Figure 14 This is a structural schematic diagram showing the relative positional relationship between the trace body and the opening area in one embodiment of this disclosure.

[0047] Figure 15 This is a structural schematic diagram showing the relative positional relationship between the trace body and the opening area in one embodiment of this disclosure.

[0048] Figure 16 This is a structural schematic diagram showing the relative positional relationship between the trace body and the opening area in one embodiment of this disclosure.

[0049] Figure 17 This is a structural schematic diagram showing the relative positional relationship between the trace body and the opening area in one embodiment of this disclosure.

[0050] Figure 18 This is a structural schematic diagram showing the relative positional relationship between the trace body and the opening area in one embodiment of this disclosure.

[0051] Figure 19 This is a structural schematic diagram showing the relative positional relationship between the trace body, the ferrite layer, and the opening area in one embodiment of this disclosure.

[0052] Figure 20 This is a structural schematic diagram showing the relative positional relationship between the trace body, the ferrite layer, and the opening area in one embodiment of this disclosure.

[0053] Figure 21This is a structural schematic diagram showing the relative positional relationship between the trace body, the ferrite layer, and the opening area in one embodiment of this disclosure.

[0054] Figure 22 This is a structural schematic diagram showing the relative positional relationship between the trace body, the ferrite layer, and the opening area in one embodiment of this disclosure.

[0055] Figure 23 This is a structural schematic diagram showing the relative positional relationship between the trace body, the ferrite layer, and the opening area in one embodiment of this disclosure.

[0056] Figure 24 This is a structural schematic diagram showing the relative positional relationship between the trace body, the ferrite layer, and the opening area in one embodiment of this disclosure.

[0057] Figure 25 This is a structural schematic diagram showing the relative positional relationship between the trace body, the ferrite layer, and the opening area in one embodiment of this disclosure.

[0058] Figure 26 This is a schematic diagram of the structure of the back cover of the backlight module in one embodiment of the present disclosure.

[0059] Figure 27 This is a schematic diagram of the structure of the back cover of the backlight module in one embodiment of the present disclosure.

[0060] Figure 28 This is a schematic diagram of the structure of the back cover of the backlight module in one embodiment of the present disclosure.

[0061] Figure 29 This is a schematic diagram of the structure of the back cover of the backlight module in one embodiment of the present disclosure.

[0062] Figure 30 This is a schematic diagram of the structure of the back cover of the backlight module in one embodiment of the present disclosure.

[0063] Figure 31 This is a schematic diagram of the structure of the back cover of the backlight module in one embodiment of the present disclosure.

[0064] Figure 32 This is a structural schematic diagram showing the relative positional relationship between the trace body and the opening area in one embodiment of this disclosure. Detailed Implementation

[0065] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0066] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0067] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0068] This disclosure provides a display device and an electronic device having the display device. See also Figures 1-4 The display device includes a back cover (DD), a backlight module (BLU), and a display module (PNL) stacked sequentially. See also the top view. Figure 6 The display device has an NFC wiring area CC for setting an NFC coil LL; the display module PNL sets an NFC coil LL within the NFC wiring area CC for near-field communication.

[0069] The display device disclosed herein can employ one or more of the following methods to improve the strength, area, and distance of near-field communication: a ferrite layer FF overlapping with the NFC wiring area CC is disposed between the back cover DD and the back cover of the backlight module BLU; the back cover E1 of the backlight module BLU has an opening H1 overlapping with the NFC wiring area CC; and at least a portion of the overlapping areas of the back cover DD and the back cover E1 of the backlight module BLU with the NFC wiring area CC are made of non-metallic material. This overcomes the influence of the back cover DD and the back cover E1 of the backlight module BLU on the signal magnetic field of near-field communication, improves the strength of the signal magnetic field, and thus ensures the smooth implementation of near-field communication.

[0070] In this disclosure, when describing the overlap of structure A (e.g., film layer, trace, or aperture) with structure B (e.g., film layer, trace, or aperture), it means that the orthographic projections of structure A and structure B on the display module have overlapping areas. When describing the partial overlap of structure A (e.g., film layer, trace, or aperture) with structure B (e.g., film layer, trace, or aperture), it means that the orthographic projections of structure A and structure B on the display module have overlapping areas, and also non-overlapping areas. When describing structure A (e.g., film layer, trace, or aperture) covering structure B (e.g., film layer, trace, or aperture), it means that the orthographic projection of structure B on the display module is within the orthographic projection of structure A on the display module. When describing the overlap between structure A (e.g., film, trace, or aperture) and structure B (e.g., film, trace, or aperture), it means that the orthographic projection of structure A on the display module completely overlaps with the orthographic projection of structure B on the display module.

[0071] The structure, principle, and effects of the display device disclosed herein will be further explained and illustrated below with reference to the accompanying drawings.

[0072] See Figures 1-4 The display module PNL can be a liquid crystal display module, which may include an array substrate AR, a liquid crystal layer LC, and a color filter substrate CF arranged in a cell. The array substrate AR may have an array of pixel electrodes and pixel driving circuits for driving the pixel electrodes; the color filter substrate CF has a stacked black matrix layer and a color filter layer, with each color resist on the color filter layer corresponding to a pixel electrode. A sealing adhesive layer D2 is also disposed between the array substrate AR and the color filter substrate CF, surrounding the liquid crystal layer LC to form a liquid crystal cell and connect the array substrate AR and the color filter substrate CF. Furthermore, the display module PNL may also include a first polarizer located on the side of the array substrate AR away from the color filter substrate CF and a second polarizer located on the side of the color filter substrate CF away from the display module PNL.

[0073] In some embodiments of this disclosure, the array substrate (AR) includes a substrate and a driving circuit layer disposed on one side of the substrate. The driving circuit layer is provided with pixel driving circuits and pixel electrodes. In one example, the driving circuit layer includes multiple gate lines extending along the row direction and multiple data lines extending along the column direction. The gate lines and data lines are intersected to define multiple pixel regions. Each pixel region is provided with a thin-film transistor (TFT) serving as a pixel driving circuit and a pixel electrode. The source of the TFT is electrically connected to an adjacent data line, the gate of the TFT is electrically connected to an adjacent gate line, and the drain of the TFT is electrically connected to a pixel electrode within the same pixel region.

[0074] The display module PNL may also have a common electrode for applying a common voltage. The common electrode may be disposed on the color filter substrate CF or on the driving layer. This disclosure does not limit this.

[0075] See Figure 6 and Figure 7 Viewed from above, the display module PNL includes a display area AA for display and a peripheral area BB surrounding the display area AA. Pixel driving circuitry and pixel electrodes are located within the display area AA. A first sub-peripheral area B1 may be provided within the peripheral area BB, and the first sub-peripheral area B1 has pads for electrical connection to the control circuitry of the display device.

[0076] In this disclosure, an NFC wiring area CC may be provided in the display module PNL, and an NFC coil LL may be provided in the NFC wiring area CC. The NFC wiring area CC includes the area occupied by the traces of the NFC coil LL and the area surrounded by these traces.

[0077] The NFC coil LL can be disposed on the array substrate AR or the color filter substrate CF, and this disclosure is not limited thereto. In one embodiment of this disclosure, the NFC wiring area CC is disposed on the array substrate AR and is disposed on the same layer as the pixel driving circuit. For example, the traces of the NFC wiring area CC can be disposed on the gate layer, the source / drain metal layer, or a bridge between these two layers. In another embodiment of this disclosure, the NFC wiring area CC is disposed on the color filter substrate CF. For example, a wiring layer can be disposed on the side of the black matrix layer near the array substrate AR, and the wiring layer forms the NFC coil LL. At least a portion of the NFC coil LL can be shielded under the black matrix layer. In one embodiment of this disclosure, the orthogonal projection of at least a portion of the traces of the NFC coil LL onto the black matrix layer can be located within the black matrix layer.

[0078] In one embodiment of this disclosure, see Figure 7 The peripheral area BB includes a second sub-peripheral area B2 opposite to the first sub-peripheral area B1. The second sub-peripheral area B2 and the first sub-peripheral area B1 are located on opposite sides of the display area AA. The second sub-peripheral area B2 may have two pads (PADs) for electrical connection to both ends of the NFC coil LL. The two pads (PADs) are electrically connected to both ends of the NFC coil LL via traces.

[0079] In one embodiment of this disclosure, the NFC coil LL has one loop of trace. See also Figure 9 The NFC coil LL includes a body trace L1 located in the display area AA, and the two ends of the body trace L1 are electrically connected to two PADs through traces respectively.

[0080] In another embodiment of this disclosure, the NFC coil LL has multiple turns of traces. The NFC coil LL includes multiple body traces L1 located in the display area AA and at least one connecting trace L2 located in the peripheral area BB. The body traces L1 are connected in series via the connecting traces L2 to form a complete NFC coil LL. Both ends of the NFC coil LL are electrically connected to the pads PAD via traces. For example, see [link to example]. Figure 8 The NFC coil LL includes two turns of trace; the NFC coil LL in the display area AA includes two body traces L1.

[0081] In some embodiments of this disclosure, see Figure 7 The NFC wiring area CC includes the first NFC wiring area C1 located in the display area AA and the second NFC wiring area C2 located in the peripheral area BB. The first NFC wiring area C1 is the wiring range of the main body trace L1, and the second NFC wiring area C2 is the wiring range of the connecting trace L2.

[0082] In one embodiment of this disclosure, see Figure 5 The backlight module (BLU) may include a rear shell E1 and a light source E3 stacked sequentially. The light source E3 may be a side-lit light source E3 or a direct-lit light source E3. For example, in one embodiment, the light source E3 includes a light guide plate and a light-emitting element facing the side of the light guide plate. The light emitted by the light-emitting element is uniformly emitted through the light guide plate.

[0083] Furthermore, the backlight module BLU may also include a reflective layer E2 sandwiched between the light source E3 and the back cover E1, and a diffuser E4, a lower prism film E5, an upper prism film E6, etc., which are sequentially stacked on the side of the light source E3 away from the back cover DD.

[0084] Optionally, in some embodiments, the display device further includes a receiving cavity between the back cover DD and the backlight module BLU, within which components such as the control circuit D1 of the display device are arranged. In one embodiment of this disclosure, the display device may also include a battery within the receiving cavity.

[0085] During product testing, the inventors discovered that the back cover DD and the back cover E1 of the backlight module BLU significantly affect the communication distance of the NFC coil LL. Therefore, this disclosure proposes a targeted solution to ensure that when the NFC coil LL is located within the display module PNL, the display device still has an appropriate near-field communication distance and communication area, thus guaranteeing the near-field communication function of the display device.

[0086] In some embodiments of this disclosure, at least a portion of the area where the back cover DD of the display device overlaps with the NFC wiring area CC can be made of a non-metallic material, and at least a portion of the area where the rear cover E1 overlaps with the NFC wiring area CC can also be made of a non-metallic material. In other words, the back cover DD has a first area made of a non-metallic material, and the rear cover E1 has a second area made of a non-metallic material. The first area at least partially overlaps with the NFC wiring area CC, for example, it is completely located within or completely covers the NFC wiring area CC; the second area at least partially overlaps with the NFC wiring area CC, for example, it is completely located within or completely covers the NFC wiring area CC. Since the non-metallic material does not interfere with the magnetic field of the NFC wiring area CC, the first and second areas can serve as signal channels for the NFC wiring area CC, thus ensuring its communication distance.

[0087] As an example, see Figure 1 Both the back cover DD of the display device and the back cover E1 of the backlight module BLU can be made of non-metallic materials, such as plastic, to avoid the influence of the back cover DD and back cover E1 on the NFC wiring area CC. In this way, the back cover E1 and back cover DD will not interfere with the magnetic field of the NFC wiring area CC, thereby enabling the display device to have sufficient near-field communication distance and ensuring its near-field communication function. The materials of the back cover DD and the back cover E1 can be the same or different; this disclosure does not impose any limitation on this.

[0088] In some embodiments of this disclosure, see Figure 2 and Figure 4 The back cover DD is made of metal. A ferrite layer FF is disposed between the back cover DD and the back cover E1 of the backlight module BLU. The ferrite layer FF at least partially overlaps with the NFC wiring area CC. Thus, the ferrite layer FF can reduce the absorption of the signal magnetic field by the metal material on the back cover DD; moreover, the ferrite layer FF can also increase the strength of the signal magnetic field. Therefore, by setting the ferrite layer FF, the strength of the signal magnetic field can be effectively guaranteed, thereby guaranteeing or increasing the sensing distance of the NFC wiring area CC. In this embodiment, the material of the back cover E1 can be either metal or non-metal, and the ferrite layer FF can effectively reduce the influence of the back cover DD on the signal magnetic field in either case.

[0089] In one embodiment of this disclosure, see Figure 2 The back cover DD is made of metal, while the rear cover E1 is made of non-metallic material. This ensures that the rear cover E1 has no effect on the strength of the signal magnetic field. By adding a ferrite layer FF to overcome the influence of the back cover DD on the signal magnetic field, the near-field communication function of the display device can be guaranteed.

[0090] In one embodiment of this disclosure, the ferrite layer FF can be made of a high-temperature sintered ferrite material.

[0091] In one embodiment of this disclosure, the ferrite layer FF is attached to the surface of the back shell E1 away from the display module PNL, so as to be as close as possible to the back shell E1 to enhance the strength of the signal magnetic field and reduce the absorption of the magnetic field by the back shell DD.

[0092] In some embodiments of this disclosure, the orthographic projection of the ferrite layer FF onto the display module PNL can cover at least a portion of the NFC wiring area CC, for example, it can cover the first NFC wiring area C1 or each body trace L1, or completely cover the NFC wiring area CC. The shape of the ferrite layer FF can be determined according to requirements, for example, it can be rectangular, U-shaped, or ring-shaped.

[0093] In one embodiment of this disclosure, the body trace L1 is arranged symmetrically about the axis of symmetry of the body trace L1; the ferrite layer FF is arranged symmetrically about the axis of symmetry of the body trace L1.

[0094] In one example, see Figure 10 The NFC coil LL includes two body traces L1; the ferrite layer FF is rectangular, and its orthographic projection onto the display module PNL covers each body trace L1. Further, see... Figure 10 The orthographic projection of the ferrite layer FF onto the display module PNL can also extend into the peripheral area BB.

[0095] In another example, see Figure 11 The NFC coil LL includes a body trace L1; the ferrite layer FF is rectangular, and its orthographic projection onto the display module PNL covers the body trace L1. Further, see... Figure 11 The orthographic projection of the ferrite layer FF onto the display module PNL can also extend into the peripheral area BB.

[0096] In another example, see Figure 12The NFC coil LL includes a main trace L1. The main trace L1 is U-shaped and includes three sequentially connected sub-traces. The ferrite layer FF is U-shaped and includes three sequentially connected sub-structures. The three sub-traces of the main trace L1 correspond one-to-one with the three sub-structures of the ferrite layer FF; each sub-traces is covered by its corresponding sub-structure. In other words, the orthographic projection of the sub-structure onto the display module PNL can cover the corresponding sub-traces. In one embodiment of this disclosure, the width of the sub-structure is greater than the width of the corresponding sub-traces; the extension axis of the sub-structure coincides with the extension axis of the sub-traces. Thus, the shape of the ferrite layer FF is substantially the same as the shape of the main trace L1 and larger than the size of the main trace L1, so that the orthographic projection of the ferrite layer FF onto the display module PNL covers the main trace L1. Further, see... Figure 12 The orthographic projection of the ferrite layer FF onto the display module PNL can also extend into the peripheral area BB. See also Figure 12 In this example, the ferrite layer FF can overlap with a portion of the NFC wiring area CC without covering the entire NFC wiring area CC.

[0097] Understandably, in Figures 10-12 In this embodiment, the orthographic projection of the ferrite layer FF onto the display module PNL covers the body trace L1 as an example. However, in other embodiments of this disclosure, the orthographic projection of the ferrite layer FF onto the display module PNL may partially overlap with or not overlap with the body trace L1, such that the ferrite layer FF overlaps with at least a portion of the NFC wiring area CC.

[0098] In some embodiments of this disclosure, see Figure 3 and Figure 4 The back cover E1 is made of metal. In this case, an opening area HH can be provided on the back cover E1, and an opening H1 is provided within the opening area HH. The opening H1 at least partially overlaps with the NFC wiring area CC. In this way, the signal magnetic field can pass through the back cover E1 through the opening H1, avoiding or weakening the shielding of the back cover E1 and ensuring the strength of the signal magnetic field. In this embodiment, regardless of whether the back cover DD is made of metal or non-metal, the opening H1 can reduce the influence of the back cover E1 on the signal magnetic field, thereby improving the communication distance.

[0099] In one embodiment of this disclosure, see Figure 3 The rear shell E1 is made of metal, while the back shell DD is made of non-metallic material. Thus, the back shell DD has no effect on the strength of the signal magnetic field. The display device can maintain its communication function by providing an opening H1 on the rear shell E1 to reduce its influence.

[0100] In this embodiment, the rear shell E1 has an opening area HH for arranging openings H1, with the openings H1 disposed within the opening area HH. One or more openings H1 can be disposed in the opening area HH, depending on the requirements of near-field communication. The opening area HH at least partially overlaps with the NFC wiring area CC; it can extend beyond or be within the NFC wiring area CC. It can also partially overlap with the NFC coil LL or not overlap at all, depending on the requirements of near-field communication.

[0101] In one embodiment of this disclosure, the aperture area HH covers at least a portion of the NFC first wiring area C1.

[0102] In one embodiment of this disclosure, the geometric center of the aperture region HH coincides with the geometric center of the NFC first wiring region C1.

[0103] In one embodiment of this disclosure, both the aperture region HH and the body trace L1 have a symmetrical structure; the axis of symmetry of the aperture region HH coincides with the axis of symmetry of the body trace L1.

[0104] The shape of the opening area HH can be determined as needed; it can be rectangular (e.g., ...). Figure 26 As shown), rhombus (e.g.) Figure 27 As shown), elliptical ( Figure 28 (as shown), circular, U-shaped, S-shaped, arc-shaped, pentagonal, hexagonal or other shapes, but this disclosure does not make any special limitation in this regard.

[0105] Within the opening area HH, one or more openings H1 can be provided. For example, in one embodiment of this disclosure, see... Figures 26-28 An opening H1 is provided within the opening area HH, and the edge of the opening H1 is flush with the edge of the opening area HH. In another embodiment of this disclosure, see... Figures 29-31 Multiple openings H1 are provided within the opening area HH, making the rear shell E1 appear hollow within the opening area HH. The openings H1 can be rectangular (e.g., ...). Figure 30 and 31 (as shown), rhombus, oval, circle ( Figure 29 As shown), the openings can be U-shaped, star-shaped, pentagonal, hexagonal, or other shapes; this disclosure does not limit this. The openings H1 within the opening region HH can be arranged in an array, for example, along a row and column direction (e.g., ...). Figure 29 and Figure 30 (as shown) or distributed in an array along a diagonal direction (such as...) Figure 31 (As shown). Of course, the individual openings H1 within the opening region HH can also be distributed without an array, for example, distributed along an arc-shaped trajectory or scattered.

[0106] In one example, see Figure 13 The NFC coil LL includes two body traces L1, each U-shaped. An aperture region HH is also U-shaped, covering the gap between the two body traces L1 and portions of each body trace L1 adjacent to that gap. In other words, in this example, the aperture region HH covers a portion of each body trace L1 and the gap between them. Furthermore, the axis of symmetry of the aperture region HH coincides with the axis of symmetry of the body traces L1.

[0107] In another example, see Figure 14 The NFC coil LL includes two body traces L1; the body traces L1 are U-shaped; the aperture area HH is rectangular and covers a portion of each body trace L1 and a portion of the gap between the body traces L1. Furthermore, the geometric center of the aperture area HH is the same as the geometric center of the first NFC wiring area C1.

[0108] In another example, see Figure 15 The NFC coil LL includes a body trace L1; the body trace L1 is U-shaped. The aperture area HH is U-shaped and coincides with the body trace L1, that is, the orthographic projection of the aperture area HH on the display module coincides with the body trace L1. Furthermore, the axis of symmetry of the aperture area HH coincides with the axis of symmetry of the body trace L1.

[0109] In another example, see Figure 16 The NFC coil LL includes a body trace L1; the body trace L1 is U-shaped. An opening area HH is rectangular and located within the notch surrounded by the body trace L1. At least a portion of the edge of the opening area HH is flush with the edge of the body trace L1 (coinciding with its orthographic projection on the display module PNL). Furthermore, the axis of symmetry of the opening area HH coincides with the axis of symmetry of the body trace L1.

[0110] In another example, see Figure 17 The NFC coil LL includes a body trace L1; the body trace L1 is U-shaped. The aperture area HH is rectangular and completely located within the notch surrounded by the body trace L1. The orthographic projection of the aperture area HH onto the display module PNL has a gap with the edge of the body trace L1. Furthermore, the axis of symmetry of the aperture area HH coincides with the axis of symmetry of the body trace L1. Furthermore, the geometric center of the aperture area HH coincides with the geometric center of the notch surrounded by the body trace L1.

[0111] In another example, see Figure 18The NFC coil LL includes a body trace L1, which is U-shaped. An opening area HH is rectangular. The opening area HH covers a portion of the body trace L1, at least a portion of the notch surrounded by the body trace L1, and at least partially extends out of the NFC wiring area CC. Furthermore, the axis of symmetry of the opening area HH coincides with the axis of symmetry of the body trace L1.

[0112] It is understandable that the size, shape, and location of the aperture region HH, as well as the different patterns of the apertures H1 within the aperture region HH, will all affect the strength of the signal magnetic field; however, these effects all enhance the strength of the signal magnetic field. The optimal arrangement of the aperture region HH and apertures H1 can be determined or selected through simulation.

[0113] by Figure 32 The relative relationship between the opening area HH and the first NFC wiring area C1 is shown as an example. In this example, the NFC coil LL includes a main body trace L1, which is U-shaped and includes three sub-traces connected in sequence. The lengths of the three sub-traces are S3, (S1+S2+S1), and S3, respectively; the widths of the three sub-traces are S1, S4, and S1, respectively. Specifically, S1 is 1.25cm; S2 is 3.9cm; S3 is 1.9cm; and S4 is 1.5cm. Centered on the geometric center O of the main body trace L1, the back cover E1 is provided with rectangular openings H1 of different sizes (the edges of these openings H1 are the edges of the opening area HH); the geometric center of the openings H1 is O. The length of the opening H1 is S5, and the width is S6; the length direction of the opening H1 is parallel to the edge of the adjacent display area AA.

[0114] The results of tests conducted on different openings H1 are shown in the table below:

[0115] Table 1: The impact of different aperture H1 on communication distance and communication area

[0116]

[0117]

[0118] As shown in Table 1, the larger the area of ​​the aperture region HH, the greater the communication distance, but the communication area may increase or decrease. In a specific display device, the area and shape of the aperture region HH can be determined based on the display device's requirements for communication distance and communication area.

[0119] In some embodiments of this disclosure, see Figure 4Both the rear shell E1 and the back shell DD can be made of metal. It is understood that the materials of the rear shell E1 and the back shell DD can be the same or different. In this case, an opening H1 can be provided on the rear shell E1, which at least partially overlaps with the NFC wiring area CC to reduce the influence of the rear shell E1 on the signal magnetic field. A ferrite layer FF can be provided between the back shell DD and the rear shell E1, which at least partially overlaps with the NFC wiring area CC to reduce the influence of the back shell DD on the signal magnetic field and even enhance the signal magnetic field. Thus, even if both the rear shell E1 and the back shell DD are made of metal, the display device of this disclosure can still have good signal magnetic field strength and a better communication distance, ensuring the near-field communication function of the display device.

[0120] In one embodiment of this disclosure, the ferrite layer FF covers at least a portion of the opening region HH, for example, completely covers the opening region HH.

[0121] In one embodiment of this disclosure, the ferrite layer FF covers the opening area HH and the first wiring area C1 of the NFC.

[0122] In one example, see Figure 19 The NFC coil LL includes two body traces L1; the body traces L1 are U-shaped. A rectangular ferrite layer FF, whose orthographic projection onto the display module PNL covers each body trace L1, for example, completely covering the first NFC wiring area C1 and at least a portion of the second NFC wiring area C2. An aperture area HH is U-shaped, covering the gap between the two body traces L1 and the portions of the two body traces L1 adjacent to the gap; the axis of symmetry of the aperture area HH coincides with the axis of symmetry of the body traces L1.

[0123] In another example, see Figure 20 The NFC coil LL includes two body traces L1; the body traces L1 are U-shaped. A rectangular ferrite layer FF, whose orthographic projection onto the display module PNL covers each body trace L1, for example, completely covering the first NFC wiring area C1 and at least a portion of the second NFC wiring area C2. An aperture area HH is rectangular and covers a portion of each body trace L1 and a portion of the gap between the body traces L1. Furthermore, the geometric center of the aperture area HH is the same as the geometric center of the first NFC wiring area C1.

[0124] In another example, see Figure 21The NFC coil LL includes a body trace L1, which is U-shaped. A rectangular ferrite layer FF, whose orthographic projection onto the display module PNL covers each body trace L1, for example, completely covering the first NFC wiring area C1 and at least a portion of the second NFC wiring area C2. An aperture area HH is U-shaped and coincides with the body trace L1; that is, the orthographic projection of the aperture area HH onto the display module PNL coincides with the body trace L1. Furthermore, the axis of symmetry of the aperture area HH coincides with the axis of symmetry of the body trace L1.

[0125] In another example, see Figure 22 The NFC coil LL includes a main trace L1. The main trace L1 is U-shaped and includes three sequentially connected sub-traces. The ferrite layer FF is U-shaped and includes three sequentially connected substructures. The three sub-traces of the main trace L1 correspond one-to-one with the three substructures of the ferrite layer FF; each sub-traces is covered by its corresponding substructure. In other words, the orthographic projection of the substructure onto the display module PNL can cover the corresponding sub-traces. In one embodiment of this disclosure, the width of the substructure is greater than the width of the corresponding sub-traces; the extension axis of the substructure coincides with the extension axis of the sub-traces. Further, see... Figure 22 The orthographic projection of the ferrite layer FF onto the display module PNL can extend into the peripheral area BB. The aperture area HH is U-shaped and coincides with the body trace L1. Furthermore, the axis of symmetry of the aperture area HH coincides with the axis of symmetry of the body trace L1.

[0126] In another example, see Figure 23 The NFC coil LL includes a body trace L1, which is U-shaped. A rectangular ferrite layer FF, whose orthographic projection onto the display module PNL covers each body trace L1, for example, completely covering the first NFC wiring area C1 and at least a portion of the second NFC wiring area C2. An aperture area HH is rectangular and located within a notch surrounded by the body trace L1. At least a portion of the edge of the aperture area HH is flush with the edge of the body trace L1 (coinciding with its orthographic projection onto the display module PNL). Furthermore, the axis of symmetry of the aperture area HH coincides with the axis of symmetry of the body trace L1.

[0127] In another example, see Figure 24The NFC coil LL includes a body trace L1, which is U-shaped. A rectangular ferrite layer FF, whose orthographic projection onto the display module PNL covers each body trace L1, for example, completely covering the first NFC wiring area C1 and at least a portion of the second NFC wiring area C2. An aperture area HH is rectangular and entirely located within the notch surrounded by the body trace L1. The orthographic projection of the aperture area HH onto the display module PNL has a gap between it and the edge of the body trace L1. Furthermore, the axis of symmetry of the aperture area HH coincides with the axis of symmetry of the body trace L1. Furthermore, the geometric center of the aperture area HH coincides with the geometric center of the notch surrounded by the body trace L1.

[0128] In another example, see Figure 25 The NFC coil LL includes a body trace L1, which is U-shaped. A rectangular ferrite layer FF, whose orthographic projection onto the display module PNL covers each body trace L1, for example, completely covering the first NFC wiring area C1 and at least a portion of the second NFC wiring area C2. An aperture area HH is rectangular. The aperture area HH covers a portion of the body trace L1, at least a portion of the notch surrounded by the body trace L1, and at least partially extends out of the NFC wiring area CC. Furthermore, the axis of symmetry of the aperture area HH coincides with the axis of symmetry of the body trace L1.

[0129] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A display device comprising a back cover, a backlight module, and a display module stacked sequentially; the display device having an NFC wiring area for arranging an NFC coil; The display module includes a display area and a peripheral area; at least a portion of the NFC coil is located in the display area; in, The back cover of the backlight module is made of metal; the back cover of the backlight module has an opening area that overlaps with the NFC wiring area; the back cover of the backlight module has an opening in the opening area; the back cover is hollowed out in the opening area.

2. The display device according to claim 1, wherein, The back cover of the backlight module has an opening in the NFC wiring area; the edge of the opening coincides with the edge of the opening area.

3. The display device according to claim 1, wherein, The back cover of the backlight module has multiple openings within the NFC wiring area.

4. The display device according to claim 1, wherein, The NFC coil includes a body trace located in the display area; The body traces are arranged symmetrically about the axis of symmetry; the opening area is arranged symmetrically about the axis of symmetry of the body traces.

5. The display device according to claim 1, wherein, The NFC wiring area includes a first NFC wiring area located in the display area and a second NFC wiring area located in the peripheral area; The opening area covers at least a portion of the NFC first wiring area.

6. The display device according to claim 1, wherein, The NFC wiring area includes a first NFC wiring area located in the display area and a second NFC wiring area located in the peripheral area; The geometric center of the opening area coincides with the geometric center of the first wiring area of ​​the NFC.

7. The display device according to any one of claims 1 to 6, wherein, The back cover is made of metal; the display device has a ferrite layer between the back cover and the back cover of the backlight module.

8. The display device according to claim 7, wherein, The ferrite layer is disposed on the surface of the back cover of the backlight module away from the display module.

9. The display device according to claim 7, wherein, The orthographic projection of the ferrite layer onto the display module covers the NFC wiring area.

10. The display device according to claim 7, wherein, The NFC wiring area includes a first NFC wiring area located in the display area and a second NFC wiring area located in the peripheral area; The ferrite layer covers at least a portion of the first wiring area of ​​the NFC.

11. The display device according to claim 7, wherein, The NFC coil includes a body trace located in the display area; The ferrite layer covers the body traces.

12. The display device according to claim 7, wherein, The NFC coil includes a body trace located in the display area; The body traces are arranged symmetrically about the axis of symmetry of the body traces; the ferrite layer is arranged symmetrically about the axis of symmetry of the body traces.

13. The display device according to any one of claims 1 to 6, wherein, The back cover is made of metal; the display device has a ferrite layer between the back cover and the back cover of the backlight module. The ferrite layer covers at least a portion of the opening area.

14. The display device according to claim 13, wherein, The ferrite layer covers the opening area.

15. The display device according to any one of claims 1 to 6, wherein, The back shell is made of non-metallic material.

16. An electronic device comprising the display device according to any one of claims 1 to 15.

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