Display screen module and wearable device

Abstract

This invention discloses a display module and a wearable device. The display module is used in the wearable device and includes a display screen, a screen circuit board, a glass panel, and a WIFI antenna. The display screen has a display area, a screen COF area, and a screen clearance area. The screen COF area is located on one side of the display area, and the screen clearance area surrounds the other three sides of the display area, so as to jointly surround the periphery of the display area with the screen COF area. The screen circuit board is set corresponding to the screen COF area and is electrically connected to the display screen. The glass panel is covered on the light-emitting side of the display screen and has an antenna wiring area set corresponding to the screen clearance area. The WIFI antenna is set in the antenna wiring area of ​​the glass panel, and the feed line of the WIFI antenna is electrically connected to the screen circuit board. This setting can reduce the space occupied and reduce the cost. Furthermore, setting the feed line of the WIFI antenna in the glass panel can make the WIFI antenna less affected by obstacles such as arms, and the signal reception effect is more obvious compared to other setting positions.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a display module and a wearable device. Background Technology

[0002] In watch and wristband products, due to increasingly higher requirements for aesthetics and thinness, manufacturers often use magnesium-aluminum alloy for the product frame. As users' demand for wireless communication gradually increases, these watch and wristband products need to integrate several necessary frequency bands within a small space: GPS L1 1575.42MHz, BT&WIFI 2.4GHz~2.5GHz, and LTE low frequency 699MHz~960MHz and mid-high frequency 1710MHz~2700MHz. Numerous frequency bands require more space to place antennas, so metal frames are often used as antennas. Since GPS and LTE frequency bands do not overlap, metal frames can be used as antennas to achieve shared use of GPS and LTE. However, since LTE and Wi-Fi 2.4 overlap in frequency bands, it is not suitable to combine the two types of antennas together. Therefore, when adding a Wi-Fi 2.4 antenna to a commonly used frame-type antenna, if the Wi-Fi 2.4 antenna and LTE share the frame, although it can reduce the space occupied, it will sacrifice isolation and reduce the user experience. If the isolation is improved, a separate bracket and wiring are required, which is costly and takes up a lot of space. Summary of the Invention

[0003] The main objective of this invention is to propose a display module and wearable device that aims to solve the problems of poor isolation caused by the shared frame design when adding a WIFI 2.4 antenna to existing frame-type antennas, as well as the need to design a bracket for separate wiring, which results in high cost and large space occupation.

[0004] To achieve the above objectives, the present invention proposes a display module for wearable devices, the display module comprising:

[0005] The display screen has a display area, a screen COF area, and a screen clearance area. The screen COF area is located on one side of the display area, and the screen clearance area is arranged around the other three sides of the display area so as to surround the display area together with the screen COF area.

[0006] A screen circuit board is provided corresponding to the COF area of ​​the screen, and the screen circuit board is electrically connected to the display screen.

[0007] A glass panel, covering the light-emitting side of the display screen, the glass panel having an antenna wiring area corresponding to the screen clearance area; and,

[0008] A WIFI antenna is disposed on the glass panel and is located within the antenna wiring area. The feed line of the WIFI antenna is electrically connected to the screen circuit board.

[0009] Optionally, the feed line of the WIFI antenna is embedded on the side of the glass panel facing the display screen.

[0010] Optionally, the feed line of the WIFI antenna is arranged in a ring, and the feed line of the WIFI antenna is located within the antenna wiring area and is correspondingly wrapped around the outer periphery of the display area.

[0011] Optionally, the width of the screen clearance area in the radial direction of the display screen is W;

[0012] The diameter of the feed line of the WIFI antenna is D, where D < W.

[0013] Optionally, the WIFI antenna transmits at a frequency of 2400MHz-2500MHz.

[0014] Optionally, the display module further includes a microstrip line for electrically connecting the screen circuit board to the radio frequency terminal of the wearable device's motherboard.

[0015] The present invention also provides a wearable device, the wearable device comprising:

[0016] The bottom shell forms an installation cavity with an opening on one side;

[0017] The motherboard is embedded within the mounting cavity and disposed near the opening of the mounting cavity; and,

[0018] A display module, wherein the display module is disposed in the opening of the mounting cavity, the display module comprising:

[0019] The display screen has a display area and a screen clearance area surrounding the outer periphery of the display area;

[0020] A screen circuit board is disposed in the screen clearance area, and the screen circuit board is electrically connected to the display screen.

[0021] A glass panel, covering the light-emitting side of the display screen, the glass panel having an antenna wiring area corresponding to the screen clearance area; and,

[0022] A WIFI antenna is disposed on the glass panel and is located within the antenna wiring area. The feed line of the WIFI antenna is electrically connected to the screen circuit board.

[0023] Optionally, the bottom shell includes a bottom plate and a metal frame. The metal frame is disposed on the bottom plate to form the mounting cavity together with the bottom plate. The inner side of the metal frame is provided with ground feed points corresponding to the GPS antenna and the LTE antenna. The ground feed points on the inner side of the metal frame are electrically connected to the ground terminal of the motherboard, so that the metal frame forms the transmitter of the GPS antenna and the LTE antenna.

[0024] Optionally, the metal frame is detachably connected to the base plate via a snap-fit ​​mechanism.

[0025] Optionally, the wearable device includes a smartwatch or a smart bracelet.

[0026] In the technical solution of this invention, the display module includes a display screen, a screen circuit board, a glass panel, and a WIFI antenna; the display screen has a display area, a screen COF area, and a screen clearance area, the screen COF area is located on one side of the display area, and the screen clearance area surrounds the other three sides of the display area, so as to jointly surround the periphery of the display area with the screen COF area; the screen circuit board is correspondingly disposed in the screen COF area, and the screen circuit board is electrically connected to the display screen; the glass panel is disposed on the light-emitting side of the display screen, and the glass panel has an antenna trace area corresponding to the screen clearance area; the WIFI antenna is disposed on the glass panel and is correspondingly located within the antenna trace area, and the feed line of the WIFI antenna is electrically... The WIFI antenna feed line is connected to the screen circuit board; that is, the WIFI antenna feed line is located in the antenna trace area of ​​the glass panel. Since the antenna trace area is set in the screen clearance area, the antenna trace area has sufficient space for the WIFI antenna feed line to run, and placing the WIFI antenna feed line in the antenna trace area will not affect the performance of the display screen. At the same time, placing the WIFI antenna feed line in the glass panel eliminates the need for a trace bracket, which not only reduces the space occupied but also reduces costs. Furthermore, placing the WIFI antenna feed line in the glass panel makes the WIFI antenna less affected by obstacles such as arms, resulting in a more obvious signal reception effect compared to other placement positions. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1A plan view of an embodiment of the display module for a wearable device provided by the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the return loss characteristics of the frame antenna and screen antenna of a wearable device.

[0030] Figure 3 for Figure 1 A comparison chart of antenna efficiency between the frame antenna and the screen antenna in wearable devices.

[0031] Figure 4 This is a schematic diagram of a wearable device according to an embodiment of the present invention.

[0032] Explanation of reference numerals in the accompanying drawings of the embodiments provided in this invention:

[0033] label name label name 1000 wearable devices 21 Antenna routing area 100 Display module 3 WIFI antenna 1 Display screen 200 bottom shell 11 Display area 201 base plate 12 Screen COF area 202 Metal frame 13 Screen clearance area 300 motherboard 2 glass panel

[0034] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0037] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0038] In watch and wristband products, due to increasingly higher requirements for aesthetics and thinness, manufacturers often use magnesium-aluminum alloy for the product frame. As users' demand for wireless communication gradually increases, these watch and wristband products need to integrate several necessary frequency bands within a small space: GPS L1 1575.42MHz, BT&WIFI 2.4GHz~2.5GHz, and LTE low frequency 699MHz~960MHz and mid-high frequency 1710MHz~2700MHz. Numerous frequency bands require more space to place antennas, so metal frames are often used as antennas. Since GPS and LTE frequency bands do not overlap, metal frames can be used as antennas to achieve shared use of GPS and LTE. However, since LTE and Wi-Fi 2.4 overlap in frequency bands, it is not suitable to combine the two types of antennas together. Therefore, when adding a Wi-Fi 2.4 antenna to a commonly used frame-type antenna, if the Wi-Fi 2.4 antenna and LTE share the frame, although it can reduce the space occupied, it will sacrifice isolation and reduce the user experience. If the isolation is improved, a separate bracket and wiring are required, which is costly and takes up a lot of space.

[0039] In view of this, the present invention provides a display module and a wearable device. Figures 1 to 3 This is a specific embodiment of the display module provided by the present invention; Figure 4 Specific embodiments of the wearable device provided by the present invention.

[0040] Please see Figure 1The display module 100 is used in wearable devices. The display module 100 includes a display screen 1, a screen circuit board, a glass panel 2, and a WIFI antenna 3. The display screen 1 has a display area 11, a screen COF area 12, and a screen clearance area 13. The screen COF area 12 is located on one side of the display area 11, and the screen clearance area 13 is arranged around the other three sides of the display area 11, so as to surround the display area 11 together with the screen COF area 12. The screen circuit board is disposed corresponding to the screen COF area 12 and is electrically connected to the display screen 1. The glass panel 2 is disposed on the light-emitting side of the display screen 1 and has an antenna wiring area 21 corresponding to the screen clearance area 13. The WIFI antenna 3 is disposed on the glass panel 2 and is located within the antenna wiring area 21. The feed line of the WIFI antenna 3 is electrically connected to the screen circuit board.

[0041] In the technical solution of this invention, the display module 100 includes a display screen 1, a screen circuit board, a glass panel 2, and a WIFI antenna 3; the display screen 1 has a display area 11, a screen COF area 12, and a screen clearance area 13. The screen COF area 12 is located on one side of the display area 11, and the screen clearance area 13 is arranged around the other three sides of the display area 11, so as to surround the display area 11 together with the screen COF area 12; the screen circuit board is correspondingly disposed on the screen COF area 12, and the screen circuit board is electrically connected to the display screen 1; the glass panel 2 covers the light-emitting side of the display screen 1, and the glass panel 2 has an antenna wiring area 21 corresponding to the screen clearance area 13; the WIFI antenna 3 is disposed on the glass panel 2 and is correspondingly located within the antenna wiring area 21. The feed line of the WIFI antenna 3 is electrically connected to the screen circuit board; that is, the feed line of the WIFI antenna 3 is located in the antenna routing area 21 of the glass panel 2. Since the antenna routing area 21 is set in the screen clearance area 13, the antenna routing area 21 has sufficient space for the feed line of the WIFI antenna 3 to run, and placing the feed line of the WIFI antenna 3 in the antenna routing area 21 will not affect the performance of the display screen 1. At the same time, placing the feed line of the WIFI antenna 3 in the glass panel 2 eliminates the need for a cable routing bracket, which not only reduces the space occupied but also reduces costs. Furthermore, placing the feed line of the WIFI antenna 3 in the glass panel 2 makes the WIFI antenna 3 less affected by obstacles such as arms, resulting in a more obvious signal reception effect compared to other placement positions.

[0042] The present invention does not limit the specific arrangement and position of the feed line of the WIFI antenna 3 on the glass panel. The feed line of the WIFI antenna 3 can be embedded inside the glass panel 2 or located on the end face of the glass panel 2. Users can choose the specific installation method and position according to the product type.

[0043] Specifically, in this embodiment, the feed line of the WIFI antenna 3 is embedded on the side surface of the glass panel 2 facing the display screen 1. This arrangement makes the embedding process of the feed line of the WIFI antenna 3 simpler and easier to process.

[0044] Specifically, the feed line of the WIFI antenna 3 is located within the antenna wiring area 21 and is correspondingly wound around the outer periphery of the display area 11. It should be noted that winding the feed line of the WIFI antenna 3 along the outer periphery of the display area 11 not only makes the wiring arrangement of the feed line of the WIFI antenna 3 more reasonable, but also makes the embedding and processing of the feed line of the WIFI antenna 3 more convenient.

[0045] It should be noted that since the antenna routing area 21 is set corresponding to the screen clearance area 13, the antenna routing area 21 has sufficient space for the feed line of the WIFI antenna 3 to run. Since the feed line of the WIFI antenna 3 is located in the antenna routing area 21, the width of the screen clearance area 13 in the radial direction of the display screen 1 is W; the diameter of the feed line of the WIFI antenna 3 is D, where D < W; that is, there is no specific requirement for the lower limit of the antenna routing width, which is subject to the actual antenna adjustment; the upper limit of the antenna width should not exceed the screen clearance area. In this way, the installation requirements can be met while achieving ideal WIFI performance.

[0046] Furthermore, in this invention, the transmission frequency of the WIFI antenna 3 is 2400MHz-2500MHz. In the prior art, general wearable devices (watches and wristbands) typically have GPS L1, LTE, and WIFI 2.4 (2400MHz-2500MHz). However, since LTE and WIFI 2.4 overlap in frequency bands, it is not suitable to combine the two antennas together. Therefore, the feed line of the WIFI antenna 3 is located in the antenna routing area 21 of the glass panel. Since the antenna routing area 21 corresponds to the screen clearance area 13, the antenna routing area 21 has sufficient space for the feed line of the WIFI antenna 3 to run, and placing the feed line of the WIFI antenna 3 in the antenna routing area 21 will not affect the performance of the display screen 1. At the same time, placing the feed line of the WIFI antenna 3 in the glass panel 2 eliminates the need for a routing bracket, which not only reduces the space occupied but also lowers the cost.

[0047] In this invention, the display module 100 further includes a microstrip line, which is used to electrically connect the screen circuit board to the radio frequency terminal of the motherboard 300 of the wearable device 1000.

[0048] The present invention also provides a wearable device 1000, which includes a display module 100. It should be noted that the display module 100 is the same as described above, that is, the wearable device 1000 includes all the technical features of the display module 100 described above. Since the wearable device 1000 adopts all the technical solutions of all embodiments of the display module 100 described above, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0049] Specifically, please refer to Figure 4 The wearable device 1000 also includes a bottom shell 200 and a motherboard 300. The bottom shell 200 forms a mounting cavity with an opening on one side. The motherboard 300 is embedded in the mounting cavity and is located near the opening of the mounting cavity. The display module 100 is located at the opening of the mounting cavity.

[0050] Meanwhile, the bottom shell 200 includes a bottom plate 201 and a metal frame 202. The metal frame 202 is disposed on the bottom plate 201 and together with the bottom plate 201, it encloses the mounting cavity. The inner side of the metal frame 202 is provided with ground feed points corresponding to the GPS antenna and the LTE antenna. The ground feed points on the inner side of the metal frame 202 are electrically connected to the ground terminal of the motherboard 300, so that the metal frame 202 forms the transmitter of the GPS antenna and the LTE antenna.

[0051] Please see Figure 2 and Figure 3 , Figure 2 This diagram illustrates the return loss characteristics of the frame antenna and screen antenna of the wearable device 1000. The diagram compares the return loss of the metal frame as a 2.4GHz Wi-Fi antenna with that of the screen as a 2.4GHz Wi-Fi antenna, aiming to show that the screen antenna can achieve the same bandwidth performance as the frame antenna, thus achieving the purpose of practical application. Figure 3 This chart compares the antenna efficiency of the frame antenna and the screen antenna of the wearable device 1000. It compares the antenna efficiency of the metal frame as a 2.4GHz Wi-Fi antenna with that of the screen as a 2.4GHz Wi-Fi antenna, aiming to illustrate that the screen antenna can achieve better performance than the frame antenna and can meet the purpose of practical application.

[0052] Specifically, the radio frequency terminal of the motherboard 300 is detachably connected to the screen circuit board of the display module 100 via a snap-fit ​​connector. With this configuration, there is no need to set an antenna spring between the radio frequency terminal of the motherboard 300 and the screen circuit board of the display module 100, thereby reducing the cost of the spring part and thus reducing the production cost of the wearable device.

[0053] Specifically, the metal frame 202 is detachably connected to the base plate 201 via a snap fastener; this arrangement makes it more convenient to assemble and disassemble the base shell 200.

[0054] The present invention does not limit the specific form of the wearable device 1000. The wearable device 1000 can be a smartwatch, a smart bracelet, or a smart glasses or other smart wearable terminal that requires an antenna for communication.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A display module for wearable devices, characterized in that, The display module includes: The display screen has a display area, a screen COF area, and a screen clearance area. The screen COF area is located on one side of the display area, and the screen clearance area is arranged around the other three sides of the display area so as to surround the display area together with the screen COF area. A screen circuit board is provided corresponding to the COF area of ​​the screen, and the screen circuit board is electrically connected to the display screen. A glass panel, covering the light-emitting side of the display screen, the glass panel having an antenna wiring area corresponding to the screen clearance area; and, A WIFI antenna is disposed on the glass panel and is located within the antenna wiring area. The feed line of the WIFI antenna is electrically connected to the screen circuit board. The feed line of the WIFI antenna is embedded on the side of the glass panel facing the display screen.

2. The display module according to claim 1, characterized in that, The feed line of the WIFI antenna is located within the antenna wiring area and is correspondingly wound around the outer periphery of the display area.

3. The display module according to claim 1, characterized in that, In the radial direction of the display screen, the width of the screen clearance area is W; The diameter of the feed line of the WIFI antenna is D, where D < W.

4. The display module according to claim 1, characterized in that, The WIFI antenna transmits at a frequency of 2400MHz-2500MHz.

5. The display module according to claim 1, characterized in that, The display module also includes a microstrip line, which is used to electrically connect the screen circuit board to the radio frequency terminal of the wearable device's motherboard.

6. A wearable device, characterized in that, include: The bottom shell forms an installation cavity with an opening on one side; The motherboard is embedded in the mounting cavity and positioned near the opening of the mounting cavity; as well as, The display module as described in any one of claims 1 to 5, wherein the display module is disposed in the opening of the mounting cavity.

7. The wearable device according to claim 6, characterized in that, The bottom shell includes a bottom plate and a metal frame. The metal frame is disposed on the bottom plate and together with the bottom plate, it encloses the mounting cavity. The inner side of the metal frame is provided with ground feed points corresponding to the GPS antenna and the LTE antenna. The ground feed points on the inner side of the metal frame are electrically connected to the ground terminal of the motherboard, so that the metal frame forms the transmitter of the GPS antenna and the LTE antenna.

8. The wearable device according to claim 7, characterized in that, The metal frame is detachably connected to the base plate via clips.

9. The wearable device according to claim 6, characterized in that, The wearable device includes a smartwatch or a smart bracelet.

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