Middle frame assembly, foldable display module and foldable display equipment

Abstract

The embodiment of the invention discloses a middle frame assembly, a foldable display module and foldable display equipment, relates to the field of foldable screens, and aims to reduce antenna loss. According to the specific scheme, in the foldable screen equipment with three or more folds, a baffle is arranged between an antenna and a flexible circuit board, and the baffle is electrically connected with a middle frame, so that electromagnetic waves projected to the flexible circuit board by the antenna are blocked by the baffle. Or a shielding layer is arranged on the surface of the flexible circuit board and is electrically connected with the middle frame, so that the electromagnetic waves projected to the flexible circuit board by the antenna are shielded by the shielding layer. Therefore, after the foldable screen equipment is folded, an electromagnetic wave signal penetrating through the flexible circuit board is blocked, a few electromagnetic wave signals can reach the light-emitting layer in the display panel and then are absorbed, and the problem of antenna signal loss is improved.

Description

[0001] This application is a divisional application. The original application has the application number 202480002584.8 and the original application date is February 29, 2024. The entire contents of the original application are incorporated herein by reference.

[0002] This application claims priority to Chinese patent application filed on January 16, 2023, with application number 202310104021.7 and entitled "Mid-frame assembly, foldable display module and foldable display device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of foldable screens, and more particularly to a mid-frame component, a foldable display module, and a foldable display device. Background Technology

[0004] With the development of electronic devices, large-screen electronic devices are gaining an increasing share of the consumer market, and foldable electronic devices are receiving more attention. Consequently, manufacturers are investing more in foldable electronic devices. The electromagnetic environment of foldable electronic devices is extremely complex, posing significant challenges to researchers. For example, reducing signal loss in multi-folded mobile phone screens has become a major problem for researchers. Summary of the Invention

[0005] This application provides a mid-frame assembly, a foldable display module, and a foldable display device to improve the problem of antenna signal loss caused by the absorption of antenna signals when the display panel is in a folded state.

[0006] To achieve the above objectives, this application adopts the following technical solution: In a first aspect, a foldable display module is provided, including a display panel, a flexible circuit board, a mid-frame, an antenna, and a baffle. The display panel can be folded in an S-shape; the mid-frame is connected to one side of the display panel; the display panel and the flexible circuit board are arranged along a preset direction; the antenna is connected to the display panel; the mid-frame includes at least three sub-frames arranged along the preset direction and rotatably connected in sequence, the sub-frame closest to the flexible circuit board being the first sub-frame; the baffle is connected to the end of the first sub-frame closest to the flexible circuit board; the baffle is electrically connected to the end of the first sub-frame closest to the flexible circuit board; wherein the antenna and the flexible circuit board are located on opposite sides of the baffle, and the outer contour of the projection of the baffle onto the antenna region at least partially covers the projection of the flexible circuit board onto the antenna region. Electromagnetic wave signals projected by the antenna toward the flexible circuit board will pass through the flexible circuit board. When the display panel is folded in an S-shape, the electromagnetic wave signals passing through the flexible circuit board will be absorbed by the display panel, resulting in antenna signal loss. The baffle can block electromagnetic wave signals projected by the antenna toward the flexible circuit board, weakening the electromagnetic wave signals passing through the flexible circuit board and reducing the signal absorbed by the display panel, thus effectively improving antenna signal loss. In addition, the baffle is electrically connected to the first sub-frame, and the baffle can prevent static electricity from passing through the baffle and being conducted to the display panel, improving the problem of screen distortion caused by static electricity on the side of the middle frame away from the display panel.

[0007] In conjunction with the first aspect, in some feasible ways, the baffle is a mesh structure. This prevents electromagnetic wave signals from being projected onto the flexible circuit board through the mesh openings. The baffle is also lightweight, which can reduce the weight of the foldable display module.

[0008] In conjunction with the first aspect, in some feasible ways, the baffle is closed off from the surface of the antenna, or the baffle is closed off from the surface of the flexible circuit board. Thus, the baffle has a good blocking effect, and the electromagnetic wave signal of the antenna cannot pass through the closed surface.

[0009] In conjunction with the first aspect, in some feasible embodiments, the size of the baffle is larger than the size of the flexible circuit board along the rotation axis of the first sub-frame. Thus, the baffle can block the antenna signal from being projected onto the flexible circuit board, reducing electromagnetic wave signals transmitted through the flexible circuit board and lowering antenna signal loss.

[0010] In conjunction with the first aspect, in some feasible implementations, the baffle extends from one end of the first sub-frame to the other along the rotation axis of the first sub-frame. Thus, the baffle can block electromagnetic wave signals projected onto the flexible circuit board from the antenna at any point where it is connected to the first sub-frame near the flexible circuit board. This allows for a large margin in antenna installation; even if there are errors in the antenna's installation dimensions, the electromagnetic waves projected toward the flexible circuit board can be blocked by the baffle, reducing antenna signal loss and simplifying assembly.

[0011] In conjunction with the first aspect, in some feasible embodiments, the baffle includes an electrically connected bent portion and a connecting portion, the connecting portion being electrically connected to one end of the first sub-frame near the flexible circuit board; the bent portion bends toward the flexible circuit board to surround the surface of the flexible circuit board facing the antenna. Thus, the bent portion provides excellent blocking of electromagnetic wave signals projected by the antenna toward the flexible circuit board, reducing the space occupied by the baffle while maintaining the same blocking effect, and allowing it to avoid obstructing other components of the foldable display device.

[0012] In conjunction with the first aspect, in some feasible embodiments, the baffle is made of metal. All of the aforementioned materials possess excellent electrical conductivity, enabling the baffle, electrically connected to the first subframe, to block the transmission of electromagnetic waves.

[0013] In conjunction with the first aspect, in some feasible ways, the baffle is welded to the end of the first sub-frame near the flexible circuit board; or, the baffle and the end of the first sub-frame near the flexible circuit board are integrally formed. Thus, the baffle and the first sub-frame have multiple connection methods. The baffle can be fabricated together with the middle frame during the fabrication process, or the baffle and the fabricated middle frame can be assembled together.

[0014] In conjunction with the first aspect, in some feasible implementations, the first sub-frame includes a carrier plate and a side plate. The side plate surrounds the outer periphery of the carrier plate, and one end of the side plate near the flexible circuit board forms a receiving groove with the carrier plate, within which the flexible circuit board is disposed. One end of the baffle is electrically connected to the end of the carrier plate near the flexible circuit board, and the other end extends toward the side plate. Thus, the receiving groove provides installation space for the baffle, and the presence of the baffle has minimal impact on the volume of the foldable display module.

[0015] In conjunction with the first aspect, in some feasible embodiments, the first subframe further includes an insulating member located within the receiving groove, the side plate and / or the carrier plate being connected to the insulating member, and the baffle and the antenna being located on opposite sides of the insulating member. Thus, the insulating member can provide supporting strength for the side plate and the baffle, and the presence of the insulating member does not affect the size of the antenna clearance area.

[0016] In conjunction with the first aspect, in some feasible embodiments, the baffle is connected to the surface of the first subframe facing the flexible circuit board. This results in a larger space between the baffle and the antenna, providing a larger clearance area for the antenna.

[0017] Secondly, a foldable display module is provided, comprising a display panel, a flexible circuit board, a mid-frame, an antenna, and a shielding layer. The display panel can be folded in an S-shape; the flexible circuit board is connected to one side of the display panel; the display panel and the flexible circuit board are arranged along a preset direction; the mid-frame is connected to the display panel; the mid-frame includes at least three sub-frames arranged along the preset direction and rotatably connected in sequence, the sub-frame closest to the flexible circuit board being the first sub-frame; the antenna is connected to the end of the first sub-frame closest to the flexible circuit board; the shielding layer is connected to the surface of the flexible circuit board and electrically connected to the end of the first sub-frame closest to the flexible circuit board; wherein the outer contour of the shielding layer's projection in the antenna region at least partially covers the projection of the flexible circuit board in the antenna region. Thus, the shielding layer can block electromagnetic wave signals projected by the antenna toward the flexible circuit board, weaken the electromagnetic wave signals passing through the flexible circuit board, reduce the signal absorbed by the display panel, and effectively improve antenna signal loss.

[0018] In conjunction with the second aspect, in some feasible embodiments, the material of the shielding layer includes metal. All of the aforementioned materials possess excellent electrical conductivity, enabling the shielding layer electrically connected to the first subframe to block electromagnetic waves from passing through.

[0019] In conjunction with the second aspect, in some feasible methods, the shielding layer is electrically connected to the end of the first sub-frame near the flexible circuit board via conductive adhesive. Thus, the conductive adhesive can increase the contact area between the shielding layer and the first sub-frame, improving the shielding effect of the shielding layer. Furthermore, the connection method using conductive adhesive is simple and has fewer restrictions on the shape of the shielding layer and the first sub-frame.

[0020] Thirdly, a mid-frame assembly is provided for connecting an antenna, a flexible circuit board, and a display panel. The mid-frame assembly includes: at least three sub-frames for connecting to the display panel, allowing the display panel to fold in an S-shape; the at least three sub-frames are arranged along a preset direction and rotated sequentially, the preset direction being the direction in which the display panel and the flexible circuit board are arranged; the outermost sub-frame among the at least three sub-frames is a first sub-frame; and a baffle electrically connected to the end of the first sub-frame away from the other sub-frames. When the antenna, the flexible circuit board, and the display panel are connected to the mid-frame, the antenna and the flexible circuit board are located on opposite sides of the baffle, and the outer contour of the baffle's projection in the antenna region at least partially covers the projection of the flexible circuit board in the antenna region. Therefore, when the mid-frame assembly is connected to the antenna and the flexible circuit board, the absorption of electromagnetic wave signals from the antenna by the flexible circuit board can be effectively reduced, thus reducing antenna loss.

[0021] In conjunction with the third aspect, in some feasible ways, the baffle is a mesh structure, or the surface of the baffle is closed.

[0022] In conjunction with the third aspect, in some feasible ways, the baffle extends from one end of the first sub-frame to the other along the rotation axis of the first sub-frame.

[0023] In conjunction with the third aspect, in some feasible embodiments, the baffle includes a bent portion and a connecting portion electrically connected to each other, the connecting portion being electrically connected to an end of the first sub-frame away from the other sub-frames; the bent portion bends toward the flexible circuit board to surround the surface of the flexible circuit board toward the antenna when both the antenna and the display panel are connected to the middle frame.

[0024] In conjunction with the third aspect, in some feasible ways, the baffle material includes metal.

[0025] In conjunction with the third aspect, in some feasible ways, the baffle is electrically welded to the end of the first sub-frame that is away from the other sub-frames; or, the baffle is integrally formed with the end of the first sub-frame that is away from the other sub-frames.

[0026] Fourthly, a foldable display device is provided, comprising a rear shell and any of the foldable display modules provided in the first or second aspect, wherein the rear shell is connected to the side of the mid-frame away from the display panel. Therefore, the antenna electromagnetic wave loss of the foldable display device is reduced. Attached Figure Description

[0027] Figure 1a This is a structural schematic diagram of a foldable display device provided in an embodiment of this application.

[0028] Figure 1b for Figure 1a A schematic diagram of a foldable display device in its folded state.

[0029] Figure 2a This is a structural schematic diagram of a foldable display device in related technologies.

[0030] Figure 2b for Figure 2a A schematic diagram of the cross-section along the ZZ direction at point N.

[0031] Figure 3a for Figure 1b The diagram shows a cross-sectional view of the foldable display device along the HH direction.

[0032] Figure 3b A foldable display device provided in the embodiments of this application is Figure 3a An enlarged schematic diagram of the internal structure at point C.

[0033] Figure 4a This is a schematic diagram of the structure of the first sub-frame and baffle provided in an embodiment of this application.

[0034] Figure 4b A schematic diagram of the cross-sectional structure of the first sub-frame and baffle provided in the embodiments of this application.

[0035] Figure 4c This is a schematic diagram of the structure of the baffle and flexible circuit board provided in the embodiments of this application.

[0036] Figure 5 for Figure 3b Enlarged schematic diagram of point G in the middle.

[0037] Figure 6a This is a schematic diagram of a baffle provided in an embodiment of this application.

[0038] Figure 6b This is a schematic diagram of another structure of the baffle provided in an embodiment of this application.

[0039] Figure 6c This is another structural schematic diagram of the baffle provided in the embodiments of this application.

[0040] Figure 7a Another foldable display device provided in the embodiments of this application is Figure 3a An enlarged schematic diagram of the internal structure at point C.

[0041] Figure 7b for Figure 7a A magnified view of point K in the middle.

[0042] In the diagram: 010 - Foldable display device; 011 - First sub-frame; 001 - Side plate; 002 - Carrier plate; 003 - Display panel; 004 - Flexible circuit board; 005 - Bending area; 006 - Flat area; 012 - Second sub-frame; 013 - Third sub-frame; 014 - Flexible display screen; 015 - Back cover; 017 - Antenna; 100 - Foldable display device; 103 - First flat area; 104 - Second flat area; 105 - Third flat area; 101 - First bending area; 102 - Second... Bending area; 110-Flexible display screen; 111-Display panel; 112-Flexible circuit board; 120-Middle frame; 121-First sub-frame; 122-Second sub-frame; 123-Third sub-frame; 124-Carrier board; 125-Side plate; 126-Receiving groove; 127-Insulator; 130-Rear shell; 140-Antenna; 150-Baffle; 151-Bending part; 152-Connecting part; 153-Substrate; 160-Spring piece; 170-Printed circuit board; 180-Shielding layer; 181-Conductive adhesive. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0044] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0045] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0046] This application provides a foldable display device, which can be a tablet computer, mobile phone, e-reader, remote control, personal computer (PC), laptop computer, personal digital assistant (PDA), in-vehicle device, smart TV, wearable device, television set, or other products with a display interface, as well as smart display wearable products such as smartwatches and smart bracelets. This application does not impose any special limitations on the form of the above-mentioned electronic devices.

[0047] This application describes embodiments using a mobile phone as an example of a foldable display device.

[0048] Figure 1a Please refer to the structural schematic diagram of a foldable display device 100 provided in this application embodiment. Figure 1a The foldable display device 100 includes a flexible display screen 110, a middle frame 120, and a back cover 130, with the flexible display screen 110 and the back cover 130 located on opposite sides of the middle frame 120.

[0049] The middle frame 120 is grounded; exemplarily, the middle frame 120 can be connected to the system ground.

[0050] The middle frame 120 includes multiple sub-frames, which are connected by rotation in sequence.

[0051] In some embodiments, the foldable display device 100 may also include electronic components such as printed circuit boards (PCBs), batteries, and cameras, which may be disposed on the mid-frame 120.

[0052] For ease of description, the thickness direction of the foldable display device 100 is defined as direction a, which is perpendicular to the surface of the flexible display screen 110 when the foldable display device is in a flattened state. The arrangement direction of the multiple sub-frames when the flexible display screen 110 is in an unfolded state is defined as direction b. Direction a and direction b are perpendicular to each other. That is, the dimensions of the flexible display screen 110 change along direction b before and after folding.

[0053] The foldable display device 100 is an S-shaped folding device, meaning that after the foldable display device 100 is folded, the flexible display screen 110 extends along an S-shaped path.

[0054] Figure 1b for Figure 1a Please refer to the structural diagram of the foldable display device 100 in its folded state. Figure 1b and Figure 1a Before and after folding, both ends of the foldable display device 100 along the b direction are exposed on the surface.

[0055] Figure 2a Please refer to the structural diagram of a foldable display device 010 in the related art. Figure 2a The foldable display device 010 includes a first sub-frame 011, a second sub-frame 012, a third sub-frame 013, a flexible display screen 014, and a rear shell 015. The first sub-frame 011, the second sub-frame 012, and the third sub-frame 013 are rotatably connected in sequence. The first sub-frame 011, the second sub-frame 012, and the third sub-frame 013 are all connected to the flexible display screen 014.

[0056] Figure 2b for Figure 2a Please refer to the cross-sectional diagram along the ZZ direction at point N. Figure 2a and Figure 2b , Figure 2b It shows Figure 2a A cross-sectional diagram at point N shows that the foldable display device 010 can be folded or unfolded along direction b, and the thickness direction of the flexible display screen 014 is direction a. Figure 2b The N-section is parallel to both the a and b directions.

[0057] The first sub-frame 011 includes a side plate 001 and a carrier plate 002, with the side plate 001 surrounding the outer periphery of the carrier plate 002. The two opposite sides of the carrier plate 002 along the b direction are respectively connected to the flexible display screen 014 and the back cover 015.

[0058] The foldable display device 010 also includes an antenna 017, which is connected to the side panel 001. Figure 2b In the example, part of the side plate 001 is the antenna 017.

[0059] The flexible display screen 014 includes a display panel 003 and a flexible printed circuit board (FPC) 004. The display panel 003 is electrically connected to the flexible circuit board 004 on one side along direction b.

[0060] The display panel 003 has two bent areas 005 and three straight areas 006, with two adjacent straight areas 006 connected by a bent area 005. The three straight areas 006 are respectively connected to the first sub-frame 011, the second sub-frame 012 and the third sub-frame 013.

[0061] The foldable display device 010 can be folded in an S-shape. When the foldable display device 010 is folded, one of the bending areas 005 is exposed on the surface, and the bending area 005 at least partially overlaps with the projection of the flexible circuit board 004 in the antenna area.

[0062] Figure 2b In the middle, the electromagnetic wave signal radiated by antenna 017 will pass through flexible circuit board 004. Figure 2b The dashed arrow indicates the direction of electromagnetic wave signal propagation through the flexible circuit board 004. When the flexible display screen 014 is in a folded state, the electromagnetic waves through the flexible circuit board 004 will be projected onto the bending area 005 of the display panel 003. Since the light-emitting layer of the display panel 003 contains materials with high equivalent resistance, such as indium tin oxide (ITO), the materials with high equivalent resistance will absorb the electromagnetic wave signal radiated by the antenna 017, resulting in the loss of electromagnetic wave signal.

[0063] Therefore, this application provides a foldable display device 100, which can reduce the electromagnetic wave signal transmitted through the antenna to the flexible circuit board, thereby improving the problem of electromagnetic wave signal loss of the antenna.

[0064] This application does not limit the number of folds in the foldable display device 100. For example, the foldable display device 100 may be three-fold, four-fold, or more folds. This application uses a three-fold foldable display device as an example for description.

[0065] Please refer to it again. Figure 1a The middle frame 120 is connected to the flexible display screen 110. The middle frame 120 includes multiple sub-frames (such as 121, 122, and 123 in the figure), and the multiple sub-frames are connected by rotation in sequence.

[0066] In this embodiment, the foldable display device 100 is a three-fold device, with three sub-frames. In the embodiment where the foldable display device 100 is a four-fold device, the number of sub-frames is four, and so on, which will not be repeated here.

[0067] In the embodiments of this application, such as Figure 1a As shown, the three sub-frames are named first sub-frame 121, second sub-frame 122, and third sub-frame 123, respectively. Along direction b, the two opposite ends of the second sub-frame 122 are rotatably connected to the first sub-frame 121 and the third sub-frame 123, respectively. The first sub-frame 121, the second sub-frame 122, and the third sub-frame 123 are all connected to the flexible display screen 110.

[0068] The first sub-frame 121 is connected to the rear shell 130, and the first sub-frame 121 and the rear shell 130 form a cavity, in which electronic components such as printed circuit boards (PCBs), batteries, and cameras in the foldable display device 100 are housed.

[0069] The flexible display screen 110 includes a display panel 111, which includes three flat areas (103, 104, 105) and two bent areas (101, 102). Adjacent flat areas are connected by a bent area. Each flat area is connected to a subframe.

[0070] The straight area connected to the first sub-frame 121 is the first straight area 103. The straight area connected to the second sub-frame 122 is the second straight area 104. The straight area connected to the third sub-frame 123 is the third straight area 105.

[0071] The two bending areas are named the first bending area 101 and the second bending area 102, respectively. The first bending area 101 is located between the first straight area 103 and the second straight area 104. The second bending area 102 is located between the second straight area 104 and the third straight area 105.

[0072] Since the foldable display device 100 is an S-shaped folding device, when the foldable display device 100 is in the folded state, the first bending area 101 is wrapped inside the foldable display device 100, and the second bending area 102 is exposed on the surface of the foldable display device 100. It is opposite to and close to the first flat area 103 and the second flat area 104.

[0073] The foldable display device 100 also includes an antenna 140, which is located at the end of the first sub-frame 121 that is away from the second sub-frame 122. For ease of description, the end of the first sub-frame 121 that is away from the second sub-frame 122 is defined as the tail end of the first sub-frame 121.

[0074] In some embodiments of this application, antenna 140 is a portion of the conductor at the tail end of the first subframe 121.

[0075] This application does not impose restrictions on the performance parameters of the antenna 140, such as frequency, gain, VSWR, front-to-back ratio, and power, and can be designed according to requirements.

[0076] Figure 3a for Figure 1b The foldable display device 100 shown is a cross-sectional schematic diagram along the HH direction. Figure 3b The foldable display device 100 provided in the embodiments of this application is in Figure 3a Please refer to the enlarged diagram of the internal structure at point C. Figure 3a and Figure 3b The foldable display device 100 also includes a baffle 150, which is electrically connected to the tail end of the first sub-frame 121. The antenna 140 and the flexible display screen 110 are located on opposite sides of the baffle 150. Figure 3b In the diagram, the cross-section where antenna 140 is located is the cross-section of the antenna radiator. The baffle 150 is made of a conductive material. Electromagnetic waves projected by antenna 140 toward flexible display screen 110 can be blocked by baffle 150.

[0077] For example, the baffle 150 is made of a material with excellent electrical conductivity. The material with excellent electrical conductivity has a small equivalent resistance, which makes it difficult for the electromagnetic waves of the antenna 140 to pass through the baffle 150.

[0078] For example, the baffle 150 is made of a metallic material. For instance, metallic materials include copper, gold, silver, nickel, aluminum, magnesium, and their alloys, or stainless steel, etc. Metallic materials have excellent electrical conductivity and can block electromagnetic waves from passing through. Figure 3b As shown, the flexible display screen 110 includes a display panel 111 and a flexible circuit board 112. The side of the display panel 111 near the tail end of the first sub-frame 121 is electrically connected to the flexible circuit board 112, and the flexible circuit board 112 is disposed near the tail end of the first sub-frame 121.

[0079] Among the first sub-frame 121, the second sub-frame 122, and the third sub-frame 123, the first sub-frame 121 is closest to the flexible circuit board 112. The antenna 140 and the baffle 150 are both electrically connected to the end of the first sub-frame 121 closest to the flexible circuit board 112 (the tail end of the first sub-frame 121).

[0080] In other words, both the antenna 140 and the baffle 150 are connected to the tail end of the first subframe 121. The flexible circuit board 112 and the antenna 140 are located on opposite sides of the baffle 150.

[0081] The outer contour of the projection of the baffle 150 onto the antenna 140 region at least partially covers the projection of the flexible circuit board 112 onto the antenna 140 region. Thus, the electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112 are blocked by the baffle 150, and the electromagnetic wave signal passing through the flexible circuit board 112 is weakened. Consequently, when the foldable display device 100 is in a folded state, the electromagnetic wave signal projected onto the display panel 111 through the flexible circuit board 112 is reduced, the electromagnetic wave signal absorbed by the material with higher equivalent resistance within the display panel 111 is reduced, and the loss of the electromagnetic wave signal from the antenna 140 is reduced.

[0082] Among them, the materials with higher equivalent resistance mentioned above are, for example, indium tin oxide (ITO).

[0083] The aforementioned antenna 140 region refers to the projection onto the surface of antenna 140 along the propagation direction of the electromagnetic field emitted by antenna 140.

[0084] The outer contour of the projection of the aforementioned baffle 150 onto the antenna 140 region refers to the outer contour of the pattern of the projection of the baffle 150 onto the antenna 140 region.

[0085] The outer contour of the projection of the aforementioned baffle 150 onto the antenna 140 region at least partially covers the projection of the flexible circuit board 112 onto the antenna 140 region, including but not limited to the following examples: Example 1: The baffle 150 is small in size, and the entire outer contour of the projection of the baffle 150 onto the antenna 140 region is located within the projection of the flexible circuit board 112 onto the antenna 140 region. Therefore, the baffle 150 can block part of the electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112, reducing the electromagnetic wave signals absorbed by the display panel 111.

[0086] Example 2: The baffle 150 is relatively large, but the area enclosed by the outer contour of the projection of the baffle 150 onto the antenna 140 region does not completely cover the projection of the flexible circuit board 112 onto the antenna 140 region. Part of the area enclosed by the outer contour of the baffle 150 onto the antenna 140 region lies within the projection of the flexible circuit board 112 onto the antenna 140 region, and another part lies outside the projection of the flexible circuit board 112 onto the antenna 140 region. Similarly, the baffle 150 can block part of the electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112, reducing the electromagnetic wave signals absorbed by the display panel 111.

[0087] Example 3: The baffle 150 is relatively large, and the area enclosed by the outer contour of the projection of the baffle 150 onto the antenna 140 area covers the entire projection of the flexible circuit board 112 onto the antenna 140 area. As a result, the baffle 150 can block almost all electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112, and almost no electromagnetic wave signals are absorbed by the display panel 111, further reducing losses.

[0088] The embodiments of this application do not limit the structure of the first sub-frame 121 and the baffle 150, and set them according to the shape of the foldable display device 100 and the shape of the flexible circuit board 112.

[0089] Figure 4a For a structural schematic diagram of the first sub-frame 121 and baffle 150 provided in the embodiments of this application, please refer to... Figure 4a The first subframe 121 includes a carrier plate 124 and a side plate 125. The side plate 125 is connected to the outer periphery of the carrier plate 124. The baffle 150 is electrically connected to one end of the carrier plate 124 near the flexible circuit board 112. The antenna 140 is part of the side plate 125.

[0090] The end of the side plate 125 near the second sub-frame 122 is rotatably connected to the second sub-frame 122, or the end of the carrier plate 124 near the second sub-frame 122 is rotatably connected to the second sub-frame 122.

[0091] This application does not limit the connection method between the baffle 150 and the flexible circuit board 112. For example, the baffle 150 and the flexible circuit board 112 are not directly connected, and there is a gap between them. Alternatively, the baffle 150 and the flexible circuit board 112 are bonded together. Alternatively, a cushioning material, such as a sponge, can be provided between the baffle 150 and the flexible circuit board 112.

[0092] The shape of the carrier board 124 is not limited in this embodiment. For example, through holes can be provided on the carrier board 124 to avoid components such as printed circuit boards, batteries, and cameras.

[0093] As described above, the baffle 150 can block electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112, and the carrier plate 124 can also block electromagnetic waves projected by the antenna 140. Therefore, in some embodiments, the carrier plate 124 can also block part of the electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112. Obviously, even if the area enclosed by the outer contour of the projection of the baffle 150 onto the antenna 140 only covers part of the projection of the flexible circuit board 112 onto the antenna 140, the electromagnetic wave signal projected by the antenna 140 toward the flexible circuit board 112 can still be effectively blocked by the auxiliary blocking effect of the carrier plate 124 and the baffle 150.

[0094] As described above, the flexible circuit board 112 is connected to the side of the display panel 111 near the tail end of the first sub-frame 121. The area of ​​the flexible circuit board 112 near the tail end of the first sub-frame 121 is a bending area, which is connected to the display panel 111.

[0095] Figure 5 for Figure 3b Please refer to the enlarged diagram at point G. Figure 5 , Figure 5 In the middle, the tail end of the first sub-frame 121 has a receiving groove 126, which is used to receive the bent area of ​​the flexible circuit board 112 near the tail end of the first sub-frame 121.

[0096] For example, the side plate 125 and the carrier plate 124 are arranged to form a receiving groove 126. In this way, the side plate 125 and the carrier plate 124 can avoid the flexible circuit board 112.

[0097] It is understood that the dimensions of the flexible circuit board 112 along the b direction are not limited in the embodiments of this application. For example, in the embodiment where the distance between the printed circuit board 170 and the display panel 111 near the tail end of the first sub-frame 121 is relatively small, the dimensions of the flexible circuit board 112 along the b direction can be smaller, and the entire flexible circuit board 112 can be located within the receiving groove 126.

[0098] This application embodiment does not limit the cross-sectional shape of the receiving groove 126, which is a surface perpendicular to both the b-direction and the a-direction. Each cross-section of the receiving groove 126 can be the same or different, and can be set according to the structure of the side plate 125 and the carrier plate 124.

[0099] For example, in the area where the side plate 125 serves as the antenna 140, the carrier plate 124 and the antenna 140 are spaced apart, and the receiving groove 126 formed by the carrier plate 124 and the antenna 140 has the following shape: Figure 5 As shown.

[0100] Figure 5 The side plate 125 serves as the antenna 140, and the carrier plate 124 is grounded. There is a gap between the antenna 140 and the carrier plate 124. Thus, the area enclosed by the carrier plate 124 and the side plate 125 (antenna 140) is a shaped groove. The gap between the antenna 140 and the carrier plate 124 is part of the receiving groove 126.

[0101] Figure 5 In this configuration, the area where the receiving slot 126 is located is the clearance area of ​​the antenna 140. The electromagnetic waves emitted by the antenna 140 will propagate into the receiving slot 126 and pass through the flexible circuit board 112 located within the receiving slot 126.

[0102] One end of the baffle 150 is electrically connected to the carrier plate 124, and the other end of the baffle 150 extends toward the antenna 140 (side plate 125). The baffle 150 covers the gap between the receiving slot 126 and the carrier plate 124. The baffle 150 can block electromagnetic waves emitted by the antenna 140 from passing through the gap and also block electromagnetic waves from passing through the flexible circuit board 112.

[0103] As mentioned above, electromagnetic waves passing through the flexible circuit board 112 may be absorbed by the first bending region 101. In this way, the baffle 150 can prevent electromagnetic waves from being absorbed by the first bending region 101, thereby reducing the signal loss of the antenna 140.

[0104] Since the baffle 150 is electrically connected to the carrier plate 124, the area enclosed by the antenna 140, the baffle 150, and the carrier plate 124 is the clearance area of ​​the antenna 140. The size of the gap between the antenna 140 and the carrier plate 124 directly affects the size of the clearance area of ​​the antenna 140.

[0105] The shape of the gap is not limited in this embodiment and can be set according to the mechanical properties and processing costs of the first sub-frame 121.

[0106] While meeting the mechanical and electrical performance requirements of the foldable electronic device 100, increasing the gap size can improve the bandwidth and efficiency of the antenna 140. However, as the gap increases, the power of the electromagnetic waves passing through the flexible circuit board 112 increases, potentially leading to greater antenna signal loss. The baffle 150 can prevent antenna signal loss caused by the increased gap.

[0107] For example, the baffle 150 can cover the entire gap between the antenna 140 and the carrier plate 124. In this way, the baffle 150 can effectively block electromagnetic waves from passing through the flexible circuit board 112.

[0108] Alternatively, in some embodiments, the baffle 150 may only cover a portion of the gap, and the baffle 150 may also block electromagnetic waves from passing through the flexible circuit board 112.

[0109] In the area of ​​the side plate 125 that does not serve as the antenna 140, the shape of the receiving slot 126 is not limited in this embodiment. For example, it can be... Figure 5 The shape shown can also be other shapes.

[0110] In the embodiments of this application, the end of the baffle 150 away from the carrier plate 124 is spaced apart from the side plate 125. This embodiment of the application does not limit the distance between the baffle 150 and the side plate 125; in other words, along the b direction, this embodiment of the application does not limit the distance between the baffle 150 and the side plate 125. Adjustments can be made according to the performance requirements of the antenna 140.

[0111] In some embodiments of this application, the first sub-frame 121 further includes an insulating member 127, which is located within the receiving groove 126. The antenna 140 and the baffle 150 are both connected to the insulating member 127. The insulating member 127 serves to support the antenna 140 and the baffle 150, preventing the antenna 140 from deforming under stress and increasing the mechanical properties of the first sub-frame 121. In addition, the insulating member 127 does not change the clearance area size of the antenna 140.

[0112] The embodiments of this application do not limit the material of the insulating element 127. For example, the material of the insulating element 127 can be plastic, rubber, etc.

[0113] Figure 4b This is a schematic cross-sectional view of the first sub-frame 121 and baffle 150 provided in an embodiment of this application. Figure 4b In the middle, antenna 140 is part of side plate 125, and the cross section of antenna 140 is the same as the cross section of side plate 125.

[0114] Figure 4b In the middle, along direction a, the carrier plate 124 has opposing F surface and E surface, wherein the F surface faces the display panel 111 and the E surface faces away from the display panel 111. The distance from the F surface to the antenna 140 along direction a is greater than the distance from the E surface to the antenna 140.

[0115] In some embodiments of this application, such as Figure 4b As shown, baffle 150 is connected to surface F. In other words, the distance from baffle 150 to surface F is less than the distance from baffle 150 to surface E.

[0116] In some other embodiments of this application, the baffle 150 may also be connected to the side of the carrier 124 closest to the antenna 140. In other words, the distance from the baffle 150 to the F surface is greater than the distance from the baffle 150 to the E surface.

[0117] Compared to the embodiment where the baffle 150 is connected to the side of the carrier plate 124 closest to the antenna 140, in the embodiment where the baffle 150 is connected to the side of the carrier plate 124 furthest from the antenna 140, the distance between the baffle 150 and the antenna 140 along the a direction includes the thickness of the carrier plate 124 along the a direction. The space between the baffle 150 and the antenna 140 is larger, and the clearance area between the baffle 150 and the antenna 140 is larger, which can improve the bandwidth and efficiency of the antenna 140.

[0118] The dimensions of the baffle 150 in this embodiment are not limited, but are related to the dimensions of the flexible circuit board 112.

[0119] Please refer to it again. Figure 4aThe first sub-frame 121 can rotate relative to the second sub-frame 122 about the rotation axis, causing the foldable display device 100 to fold or unfold. The rotation axis direction is defined as the d direction, and the dimension of the baffle 150 along the d direction is larger than the dimension of the flexible circuit board 112 along the d direction.

[0120] Figure 4c This is a schematic diagram of the structure of the baffle 150 and the flexible circuit board 112 provided in an embodiment of this application. Please refer to... Figure 4c The dimension of the baffle 150 along the d direction is greater than the dimension of the flexible circuit board 112 along the d direction.

[0121] Thus, the baffle 150, which is electrically connected to the carrier plate 124, can effectively block the electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112.

[0122] Furthermore, in some embodiments, along the d-direction, the baffle 150 extends from one end of the first sub-frame 121 to the other end of the first sub-frame 121. Thus, the baffle 150 can better block electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112. Additionally, the antenna 140 can be connected to the side plate 125 at any position along the d-direction, and the electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112 can be blocked by the baffle 150. This provides a large margin for the installation of the antenna 140. Even if there are errors in the installation dimensions of the antenna 140, the electromagnetic waves projected toward the flexible circuit board 112 can still be blocked by the baffle 150, reducing antenna signal loss and simplifying assembly.

[0123] The shape of the outer contour of the baffle 150 is not limited in this embodiment, but can be limited according to the shape of the opening of the receiving groove 126 between the carrier plate 124 and the side plate 125 toward the flexible circuit board 112.

[0124] Figure 6a Please refer to the schematic diagram of a baffle 150 provided in the embodiments of this application. Figure 6a and Figure 4b The baffle 150 includes a bent portion 151 and a connecting portion 152, which are electrically connected.

[0125] The connecting portion 152 is connected to the tail end of the first sub-frame 121, and the bending portion 151 bends toward the flexible circuit board 112 to surround the surface of the flexible circuit board 112 facing the antenna 140. As a result, the bending portion 151 has an excellent blocking effect on the electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112. Under the same blocking effect, the space occupied by the baffle 150 can be reduced, and the other components of the foldable display device 100 can be avoided.

[0126] The shape of the bent portion 151 is not limited in this embodiment. For example, the cross-section of the bent portion 151 can be arc-shaped, or the cross-section of the bent portion 151 can be L-shaped, etc. The aforementioned cross-section is parallel to both direction a and direction b.

[0127] In other embodiments of this application, the baffle 150 may be of other shapes. For example, the bending portion 151 described above may be replaced by a straight plate, a bent plate that is bent away from the flexible circuit board 112, an irregularly shaped plate, or other plates, and may be configured according to the spatial shape of the tail end of the first sub-frame 121 used to accommodate the baffle 150.

[0128] The shape of the connecting part 152 is not limited in this embodiment. It can be set according to the connection method between the connecting part 152 and the tail end of the first sub-frame 121 and the shape of the space used to accommodate the connecting part 152.

[0129] This application embodiment does not limit the electrical connection method between the connecting part 152 and the tail end of the first sub-frame 121. For example, the connecting part 152 is welded to the tail end of the first sub-frame 121, or the connecting part 152 is bonded to the tail end of the first sub-frame 121 with conductive adhesive, or the connecting part 152 is integrally formed with the first sub-frame 121, etc.

[0130] In the embodiment where the connecting portion 152 is integrally formed with the first subframe 121, the connecting portion 152 can be considered as part of the carrier plate 124, and the bent portion 151 can also be considered as a component of the carrier plate 124 extending between the flexible circuit board 112 and the antenna 140.

[0131] As mentioned above, the baffle 150 is made of a conductive material. In some embodiments of this application, the baffle 150 may include a variety of materials, which can be set according to the connection method between the baffle 150 and the first sub-frame 121, etc.

[0132] The material of the bent portion 151 is the same as the material of the connecting portion 152, or the material of the bent portion 151 is different from the material of the connecting portion 152.

[0133] For example, in an embodiment where the baffle 150 is welded to the first sub-frame 121, in order to ensure good mechanical properties of the weld joint, the connecting part 152 can be made of a material with a melting point close to that of the first sub-frame 121, while the material selection of the bending part 151 is not restricted by this. Thus, the material of the bending part 151 and the material of the connecting part 152 can be different.

[0134] As described above, the outer contour of the projection of the baffle 150 onto the antenna 140 region at least partially covers the projection of the flexible circuit board 112 onto the antenna 140 region. This embodiment does not limit the internal shape of the projection of the baffle 150 onto the antenna 140 region.

[0135] Figure 6a In this design, the baffle 150 is a closed structure; in other words, no through holes are provided on the baffle 150. The side of the baffle 150 facing the flexible circuit board 112 is a closed surface, and the side of the baffle 150 facing the antenna 140 is also a closed surface. The projection of the baffle 150 onto the antenna 140 region is a closed shadow area. The baffle 150 has an excellent blocking effect on electromagnetic waves projected from the antenna 140 toward the flexible circuit board 112.

[0136] Figure 6b For another structural schematic diagram of the baffle 150 provided in the embodiments of this application, please refer to... Figure 6b The baffle 150 has a mesh structure, and the internal shape of the projection of the baffle 150 into the antenna 140 region is mesh. The baffle 150 also blocks electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112, and can reduce the weight of the baffle 150, thereby reducing the weight of the foldable display device 100.

[0137] In this embodiment, the size of the mesh hole in the baffle 150 is not limited and can be set according to the performance parameters of the antenna 140.

[0138] In some embodiments, the size of the mesh hole in the baffle 150 is less than or equal to one-tenth of the wavelength of the antenna 140 in the operating frequency band. In this way, the baffle 150 also has an excellent blocking effect on the electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112.

[0139] The aforementioned mesh size refers to the maximum size of the mesh in the direction of propagation of the electromagnetic wave projected by the antenna 140 toward the flexible circuit board 112.

[0140] It is understood that in some embodiments, in order to facilitate the connection between the connecting part 152 of the baffle 150 and the first sub-frame 121, the connecting part 152 can be a closed plate-like structure, and the bending part 151 can be a mesh structure. This application embodiment does not limit this.

[0141] It is understood that in some embodiments of this application, the baffle 150 may not be a mesh structure. For example, the baffle 150 may have holes that can avoid other components of the foldable display device 100. The shape and number of holes are not limited.

[0142] Figure 6c For another structural schematic diagram of the baffle 150 provided in the embodiments of this application, please refer to... Figure 6c ,exist Figure 6c In the middle, the baffle 150 includes a base plate 153, a connecting part 152 and a bending part 151. The connecting part 152 and the bending part 151 are electrically connected, and both the connecting part 152 and the bending part 151 are connected to one side of the base plate 153.

[0143] The substrate 153 can support the connecting portion 152 and the bending portion 151. In embodiments where the materials of the connecting portion 152 and the bending portion 151 are soft materials such as copper, the substrate 153 can improve the mechanical properties of the baffle 150.

[0144] The material of the substrate 153 is not limited in this application embodiment. The material of the substrate 153 can be a conductive material or an insulating material. For example, the material of the substrate 153 can be a plastic with low density and high mechanical strength, or the substrate 153 can be steel, etc.

[0145] The shape of the substrate 153 is not limited in the embodiments of this application. For example, the substrate 153 can be a closed plate or a mesh structure.

[0146] The embodiments of this application do not limit the connection method between the substrate 153 and the connecting part 152, or the connection method between the substrate 153 and the bending part 151. For example, it can be bonding.

[0147] As mentioned above, the rotational connection between the second sub-frame 122 and the third sub-frame 123 is connected to the second bending area 102.

[0148] When the foldable display device 100 is in a folded state, the second bending area 102 bends toward the middle frame 120, and the second bending area 102 is exposed on the surface. The second bending area 102 is close to the tail end of the first sub-frame 121, and the projection of the second bending area 102 in the antenna area overlaps with the projection of the flexible circuit board 112 in the antenna area.

[0149] Therefore, the electromagnetic waves projected by the antenna 140 will hardly be projected from the area outside the flexible circuit board 112 to the second bending area 102, and the probability of them being absorbed by the second bending area 102 is small.

[0150] In this embodiment, the distance between the tail end of the antenna 140 and the tail end of the second bending region 102 is not limited. The tail end of the antenna 140 is the farthest end of the antenna 140 along the b direction, and the tail end of the second bending region 102 is the farthest end of the second bending region 102 along the b direction.

[0151] For example, when the foldable display device 100 is in the folded state, the distance M between the tail end of the antenna 140 and the tail end of the second bending region 102 along direction b is 0-6mm. For example, the distance M can be 0mm, 1mm, 2mm, 3mm, 3mm, 4mm, 5mm, 6mm, etc. In this way, the electromagnetic waves projected by the antenna 140 can be prevented from bypassing the side plate 125 away from the carrier plate 124 and being projected to the second bending region 102 and absorbed by the second bending region 102, which helps to reduce the loss of the antenna 140.

[0152] Please continue reading. Figure 3bIn some embodiments of this application, the foldable display device 100 may further include a spring 160, through which the printed circuit board 170 is fed to the antenna 140.

[0153] When the foldable display device 100 is in a folded state, the electromagnetic wave signal passing through the flexible circuit board 112 will be absorbed by the display panel 111 connected to the second sub-frame 122, resulting in loss. Figure 3a and Figure 3b The baffle 150 shown can block electromagnetic wave signals projected by the antenna 140 toward the flexible circuit board 112, thereby reducing the signal absorbed by the display panel 111 and reducing the signal loss of the antenna 140. In addition, the baffle 150 can prevent the transfer of charge (such as static electricity) on the side of the back cover 130 to the flexible display screen 110, improving the problem of screen distortion caused by static electricity shock to the flexible display screen 110.

[0154] In some embodiments of this application, the electromagnetic wave signal projected by the antenna 140 toward the flexible circuit board 112 can also be blocked by other means.

[0155] Figure 7a Another foldable display device 100 provided in the embodiments of this application is in Figure 3a An enlarged schematic diagram of the internal structure at point C. Figure 7b for Figure 7a A magnified view of point K. Please refer to [link / reference]. Figure 7a and Figure 7b The foldable display device 100 also includes a shielding layer 180. The foldable display device 100 does not have a baffle 150. For the remaining structure, please refer to the above. Figure 1a , Figure 1b , Figure 3a and Figure 3b The relevant descriptions in the document will not be repeated here.

[0156] Figure 7b In the antenna 140, the shielding layer 180 is connected to the surface of the flexible circuit board 112, and the shielding layer 180 is electrically connected to the tail end of the first sub-frame 121. The outer contour of the projection of the shielding layer 180 in the antenna 140 region at least partially covers the projection of the flexible circuit board 112 in the antenna 140 region.

[0157] Therefore, the shielding layer 180 can block the electromagnetic wave signal projected by the antenna 140 toward the flexible circuit board 112. When the foldable display device 100 is in a folded state, the electromagnetic wave signal absorbed by the display panel 111 after passing through the flexible circuit board 112 is reduced, thereby reducing the signal loss of the antenna 140.

[0158] Similarly, in the embodiments of this application, the outer contour of the projection of the shielding layer 180 in the antenna 140 region and the projection of the flexible circuit board 112 in the antenna 140 region can also have various examples, which are similar to the outer contour of the projection of the baffle 150 in the antenna 140 region described above, and will not be repeated here.

[0159] In some embodiments, the shielding layer 180 may cover the entire surface of the flexible circuit board 112 facing the antenna 140, so that the flexible circuit board 112 and the antenna 140 may have various positional relationships during the connection process, allowing for a large installation error.

[0160] Alternatively, in some embodiments, the shielding layer 180 may only cover the area of ​​the flexible circuit board 112 that can be radiated by electromagnetic waves from the antenna 140. This can save on the material used for the shielding layer 180.

[0161] The shielding layer 180 is made of a conductive material; exemplarily, the shielding layer 180 includes a material with good conductivity. For example, the material of the shielding layer 180 includes a metallic material. For example, metallic materials include copper, gold, silver, nickel, aluminum, magnesium and their alloys, or stainless steel, etc. Metallic materials have excellent electrical conductivity and can block electromagnetic waves from passing through.

[0162] It is understood that in some embodiments, the shielding layer 180 also includes a material with good support properties. For example, the shielding layer 180 is formed by overlapping multiple layered structures. Some of the layered structures are made of materials with good conductivity, which can provide excellent blocking of electromagnetic wave signals, while others are made of materials with good support properties, which can provide excellent support. The support performance is not limited by conductivity; materials with excellent support properties but poor conductivity can be selected.

[0163] This application embodiment does not limit the electrical connection method between the shielding layer 180 and the first sub-frame 121.

[0164] In some embodiments of this application, the shielding layer 180 and the first sub-frame 121 are connected by conductive adhesive 181. This can increase the contact area between the shielding layer 180 and the first sub-frame 121, improve the shielding effect of the shielding layer 180, and the connection method of conductive adhesive 181 is simple and has few restrictions on the shape of the shielding layer 180 and the first sub-frame 121.

[0165] In some other embodiments of this application, the shielding layer 180 is welded to the first subframe 121.

[0166] The shape of the shielding layer 180 is not limited in the embodiments of this application. In some embodiments of this application, the shielding layer 180 has a mesh structure.

[0167] The mesh size of the shielding layer 180 is not limited and can be set according to the performance parameters of the antenna 140. For example, the mesh size of the shielding layer 180 is less than or equal to one-tenth of the wavelength of the antenna 140 in the operating frequency band. In this way, the shielding layer 180 also has an excellent blocking effect on electromagnetic waves projected by the antenna 140 toward the flexible circuit board 112.

[0168] The aforementioned mesh size refers to the maximum size of the mesh in the direction of propagation of the electromagnetic wave projected by the antenna 140 toward the flexible circuit board 112.

[0169] In other embodiments, the shielding layer 180 is a closed structure, and no holes are provided inside the shielding layer 180, so the shielding layer 180 has excellent shielding effect.

[0170] This application does not limit the connection method between the shielding layer 180 and the flexible circuit board 112. For example, the shielding layer 180 is bonded to the flexible circuit board 112. Alternatively, the shielding layer 180 is formed on the surface of the flexible circuit board 112 by coating.

[0171] This application does not limit the connection method between the shielding layer 180 and the insulating member 127. In some embodiments, the shielding layer 180 and the insulating member 127 are not directly connected, and there is a gap between the shielding layer 180 and the insulating member 127. In some embodiments, the shielding layer 180 and the insulating member 127 may also abut against each other.

[0172] Please refer to it again. Figure 7a , Figure 7a When the foldable display device 100 is folded, the electromagnetic wave signal passing through the flexible circuit board 112 is weak due to the shielding effect of the shielding layer 180. The electromagnetic wave signal is absorbed by the display panel 111, reducing the signal loss of the antenna 140.

[0173] Please refer to the following: Figure 7a and Figure 3b In some embodiments, the foldable display device 100 may include Figure 3b baffle 150 and Figure 7a The shielding layer 180 can further enhance the blocking effect on electromagnetic wave signals projected by the antenna 140 toward the flexible circuit board 112.

[0174] In embodiments of the foldable display device 100 that include a baffle 150 and a shielding layer 180, the shielding layer 180 is electrically connected to the baffle 150. Alternatively, the shielding layer 180 is electrically connected to the first sub-frame 121. This application does not limit the scope of the embodiments.

[0175] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A foldable display module, characterized in that, include: The display panel can be folded in an S-shape. A flexible circuit board is connected to one side of the display panel; The display panel and the flexible circuit board are arranged along a preset direction; A middle frame is connected to the display panel; the middle frame includes at least three sub-frames arranged along the preset direction and rotatably connected in sequence, and the sub-frame closest to the flexible circuit board among the at least three sub-frames is the first sub-frame; The antenna is connected to one end of the first sub-frame that is closer to the flexible circuit board; The baffle is electrically connected to one end of the first sub-frame that is closer to the flexible circuit board; The first sub-frame includes a carrier plate, and there is a gap between the antenna and the carrier plate, with the baffle covering the gap.

2. The foldable display module according to claim 1, characterized in that, The baffle has a mesh structure.

3. The foldable display module according to claim 1, characterized in that, The baffle is closed on the surface near the antenna, or the baffle is closed on the surface near the flexible circuit board.

4. The foldable display module according to any one of claims 1-3, characterized in that, Along the rotation axis of the first sub-frame, the size of the baffle is larger than the size of the flexible circuit board.

5. The foldable display module according to any one of claims 1-4, characterized in that, Along the rotation axis of the first sub-frame, the baffle extends from one end of the first sub-frame to the other end.

6. The foldable display module according to any one of claims 1-5, characterized in that, The baffle includes a bent portion and a connecting portion that are electrically connected to each other. The connecting portion is electrically connected to one end of the first subframe near the flexible circuit board. The bent portion is bent toward the flexible circuit board to surround the surface of the flexible circuit board facing the antenna.

7. The foldable display module according to any one of claims 1-6, characterized in that, The baffle is made of metal.

8. The foldable display module according to any one of claims 1-7, characterized in that, The baffle is welded to one end of the first sub-frame near the flexible circuit board; or... The baffle is integrally formed with the end of the first sub-frame near the flexible circuit board.

9. The foldable display module according to any one of claims 1-8, characterized in that, The first sub-frame also includes a side plate, which surrounds the outer periphery of the carrier plate. One end of the side plate near the flexible circuit board forms a receiving groove with the carrier plate, and the flexible circuit board is disposed in the receiving groove. One end of the baffle is electrically connected to the end of the carrier plate near the flexible circuit board, and the other end extends toward the side plate.

10. The foldable display module according to claim 9, characterized in that, The first subframe also includes an insulating component located within the receiving groove, the side plate and / or the carrier plate being connected to the insulating component, and the baffle and the antenna being located on opposite sides of the insulating component.

11. The foldable display module according to any one of claims 1-10, characterized in that, The baffle is connected to the surface of the first sub-frame facing the flexible circuit board.

12. A foldable display module, characterized in that, The foldable display module includes: The display panel can be folded in an S-shape. A flexible circuit board is connected to one side of the display panel; the display panel and the flexible circuit board are arranged along a preset direction. A middle frame is connected to the display panel; the middle frame includes at least three sub-frames arranged along the preset direction and rotatably connected in sequence, and the sub-frame closest to the flexible circuit board among the at least three sub-frames is the first sub-frame; The antenna is connected to one end of the first sub-frame near the flexible circuit board; and A shielding layer is connected to the surface of the flexible circuit board and electrically connected to one end of the first sub-frame closest to the flexible circuit board; Wherein, the outer contour of the projection of the shielding layer in the antenna region at least partially covers the projection of the flexible circuit board in the antenna region.

13. The foldable display module according to claim 12, characterized in that, The material of the shielding layer includes metal.

14. The foldable display module according to claim 13, characterized in that, The shielding layer is electrically connected to one end of the first subframe near the flexible circuit board via conductive adhesive.

15. A mid-frame component, characterized in that, The mid-frame assembly is used to connect the antenna, flexible circuit board, and display panel, and the mid-frame assembly includes: At least three sub-frames are used to connect to the display panel so that the display panel can be folded in an S-shape; the at least three sub-frames are arranged along a preset direction and rotated and connected in sequence, the preset direction being the direction in which the display panel and the flexible circuit board are arranged; the outermost sub-frame among the at least three sub-frames is the first sub-frame. The baffle is electrically connected to the end of the first sub-frame that is furthest from the other sub-frames; Wherein, when the antenna, the flexible circuit board, and the display panel are connected to the mid-frame, the antenna and the flexible circuit board are respectively located on opposite sides of the baffle, and the outer contour of the projection of the baffle in the antenna region at least partially covers the projection of the flexible circuit board in the antenna region.

16. The mid-frame assembly according to claim 15, characterized in that, The baffle has a mesh structure, or the surface of the baffle is closed.

17. The mid-frame assembly according to claim 15 or 16, characterized in that, Along the rotation axis of the first sub-frame, the baffle extends from one end of the first sub-frame to the other end.

18. The mid-frame assembly according to any one of claims 15-17, characterized in that, The baffle includes a bent portion and a connecting portion that are electrically connected to each other. The connecting portion is electrically connected to the end of the first sub-frame that is away from the other sub-frames. When the antenna and the display panel are both connected to the middle frame, the bent portion bends toward the flexible circuit board to surround the surface of the flexible circuit board facing the antenna.

19. The mid-frame assembly according to any one of claims 15-18, characterized in that, The baffle is made of metal.

20. The mid-frame assembly according to any one of claims 15-19, characterized in that, The baffle is electrically connected and welded to the end of the first sub-frame that is furthest from the other sub-frames; or... The baffle is integrally formed with the end of the first sub-frame that is away from other sub-frames.

21. A foldable display device, characterized in that, The foldable display device includes a back cover and a foldable display module as described in any one of claims 1-14, wherein the back cover is connected to the side of the mid-frame away from the display panel.

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