Display modules and electronic devices

Abstract

The present application discloses a display module and an electronic device, belonging to the technical field of electronic devices. The display module comprises: an antenna circuit, a metal foil and a flexible circuit board, wherein the antenna circuit and the metal foil are respectively arranged on a first surface and a second surface opposite to a display panel, and the antenna circuit is connected to the flexible circuit board, and the metal foil is fixed by the flexible circuit board. The present application can effectively shield signal interference to the antenna electrode and improve the antenna's transceiver performance by respectively arranging the antenna circuit and the metal foil on both sides of the edge of the display panel and connecting them to the flexible circuit board.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a display module and an electronic equipment. Background Art

[0002] In the related art, with the development of wireless communication technology, the application scenarios of wireless communication systems are becoming more and more abundant, and the requirements for antennas, one of the key components of wireless communication systems, are becoming higher and higher. On the one hand, in some application scenarios, antennas need to be conformal, concealed, and safe in order to be integrated into wireless products such as automobiles, smart wearables, and smart homes. On the other hand, as the transmission rate of wireless communication systems becomes higher and higher, the communication capacity becomes larger and larger, and the carrier frequency becomes higher and higher, and the path loss caused by the higher carrier frequency becomes larger and larger, the array antenna needs to increase the gain to overcome the influence of the path loss. In order to achieve high gain and beam scanning or beamforming at the same time, phased array antenna technology needs to be adopted, so that more and more antennas need to be integrated in a limited space. At present, the design scheme of mainstream millimeter wave antennas mainly adopts the technology and process of packaged antenna (Antenna in package, AIP), that is, AIP module (AIP module), which integrates the millimeter wave array antenna, radio frequency integrated circuit (Radio Frequency Integrated Circuit, RFIC) and power management integrated circuit (Power Management Integrated Circuit, PMIC) in one module.

[0003] Under the above requirements, a solution has emerged to combine the antenna with the display device in the smartphone. Currently, one solution is to integrate the antenna into the touch layer or the wiring layer on the display substrate to achieve a narrow frame or borderless solution.

[0004] In the process of implementing this application, the inventors found that there are at least the following problems in the prior art: Display and touch signals have a significant impact on antenna signal collection, and the antenna is easily interfered. Summary of the invention

[0005] The present application aims to provide a display module and an electronic device, which at least solves one of the problems that display and touch signals have a significant impact on antenna signal acquisition and the antenna is easily interfered.

[0006] In order to solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a display module, including:

[0008] An antenna and a display panel, wherein the antenna comprises an antenna circuit, a metal foil and a flexible circuit board, wherein the antenna circuit and the metal foil are respectively arranged on a first surface and a second surface opposite to the display panel, and the antenna circuit is connected to the flexible circuit board, and the metal foil is fixed by the flexible circuit board.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, comprising: the display module as described above.

[0010] In an embodiment of the present application, an antenna circuit and a metal foil are respectively arranged on both sides of the edge of the display panel and connected to a flexible circuit board, and the metal foil is used as an antenna ground electrode in a vertical direction, thereby effectively shielding signal interference to the antenna electrode and improving the antenna's transceiver performance.

[0011] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0013] Figure 1 is a schematic diagram of a display module according to an embodiment of the present invention;

[0014] Figure 2 is a top view of an antenna circuit according to an embodiment of the present invention;

[0015] Figure 3 is a schematic diagram of a flexible circuit board according to an embodiment of the present invention;

[0016] Figure 4 is another schematic diagram of a display module according to an embodiment of the present invention.

[0017] Reference numerals:

[0018] Antenna circuit 10; Metal foil 11; Flexible circuit board 12;

[0019] Display panel 13; Antenna electrode 101; Wireless ground electrode 102;

[0020] Binding electrode 103; First substrate layer 121; Metal layer 122;

[0021] Second substrate layer 123; Binding electrode 124; Insulating layer 125. DETAILED DESCRIPTION

[0022] Embodiments of the present invention will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] The term "first" or "second" in the specification and claims of the present application may include one or more of the features explicitly or implicitly. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0024] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Combine the following Figure 1-Figure 4 A display module according to an embodiment of the present invention is described.

[0027] like Figure 1As shown, according to some embodiments of the present invention, the display module includes: an antenna and a display panel 13, the antenna includes an antenna circuit 10, a metal foil 11 and a flexible circuit board 12, wherein the antenna circuit 10 and the metal foil 11 are respectively arranged on a first surface and a second surface opposite to the display panel 13, and the antenna circuit 10 is connected to the flexible circuit board 12, and the metal foil 11 is fixed by the flexible circuit board 12.

[0028] The antenna circuit 10 is disposed on the first surface at the edge of the display panel 13 and connected to the flexible circuit board 12 , and the antenna chip on the flexible circuit board 12 is used to realize the signal transmission and reception of the antenna.

[0029] Furthermore, if Figure 2 As shown, the antenna circuit 10 includes a horizontally distributed antenna electrode 101 and an antenna ground electrode 102. The antenna ground electrode 102 is a horizontal antenna ground electrode. If only a horizontal antenna ground electrode is provided, the signal collection of the antenna electrode 101 will still be interfered by the display signal on the screen.

[0030] A metal foil 11 is disposed on a second surface of the display panel 13 opposite to the first surface, and the metal foil 11 is fixed on a flexible circuit board 12. The metal foil 11 can serve as an antenna ground of the antenna circuit 10 in a vertical direction.

[0031] The metal foil 11 can be made of a variety of metals as required, and the embodiment of the present invention is described by taking the metal foil 11 as copper foil as an example. Specifically, the metal foil 11 can be set as a strip copper foil.

[0032] For the sake of simplicity, in the following embodiments, the first surface is at the top and the second surface is at the bottom.

[0033] According to the display module of the embodiment of the present invention, by respectively arranging antenna circuits and metal foils on both sides of the edge of the display panel and connecting them to the flexible circuit board, signal interference to the antenna electrode can be effectively shielded, thereby improving the antenna's transceiver performance.

[0034] According to a further embodiment of the present invention, Figure 3 , Figure 4 As shown, the flexible circuit board 12 includes from top to bottom: a first substrate layer 121, a metal layer 122 and a second substrate layer 123, the second substrate layer 123 is partially bonded to the metal layer 122, and in the portion where the second substrate layer 123 is separated from the metal layer 122, the second substrate layer 122 is used to fix the metal foil 11, and the metal layer 122 is connected to the antenna circuit 10.

[0035] The first substrate layer 121 can be completely attached to the metal layer 122 through the first adhesive layer, and the second substrate layer 123 can be partially attached to the metal layer 122 through the second adhesive layer, while the other part is separated from the metal layer 122, so that the flexible circuit board 12 is in an open shape. The metal foil 11 is arranged on the second adhesive layer at the part where the second substrate layer 123 is separated from the metal layer 122, so that the position of the metal foil 11 is fixed on the second surface of the display panel.

[0036] Furthermore, the metal layer 122 can be made of a variety of metals as required. In the embodiment of the present invention, the metal layer 122 is only made of copper foil as an example for illustration.

[0037] Furthermore, the antenna electrode 101 and the antenna ground electrode 102 of the antenna circuit 10 are both connected to the metal layer 122 via a binding electrode 103 .

[0038] like Figure 2 , Figure 4 As shown, a binding electrode 103 connected to the antenna electrode 101 and the antenna ground electrode 102 is respectively provided. At the same time, a binding electrode 124 connected to the edge of the metal layer 122 is provided under the first substrate layer 121, and the binding electrode 124 can also be attached to the first substrate layer 121 through a first adhesive layer. The antenna electrode 101 and the antenna ground electrode 102 are respectively connected to the metal layer 122 through the corresponding binding electrodes 103 and 124, so that the antenna signal received by the antenna electrode 101 is transmitted to the metal layer 122 of the flexible circuit board 12 through the binding electrodes 103 and 124, and then transmitted to the antenna chip for normal antenna signal processing, completing the hardware communication of the antenna.

[0039] According to the display module of the embodiment of the present invention, a flexible circuit board is arranged in an opening shape, and the metal layer is connected to the antenna electrode and the antenna ground of the antenna circuit through binding electrodes on one side of the opening, while the other side of the opening is used to fix the metal foil, so that the metal foil can effectively shield the signal interference to the antenna electrode, thereby improving the antenna's receiving and transmitting performance.

[0040] According to a further embodiment of the present invention, Figure 4 As shown, in the portion where the second substrate 123 is separated from the metal layer 122 , an insulating layer 125 is disposed under the metal layer 122 .

[0041] According to the display module of the embodiment of the present invention, an insulating layer is provided under the metal layer, thereby ensuring that the antenna signal will not be affected when passing through the metal layer, thereby improving the transmitting and receiving performance of the antenna.

[0042] According to a further embodiment of the present invention, the position of the metal foil on the second surface corresponds to the position of the antenna circuit on the first surface.

[0043] Furthermore, the area of ​​the metal foil is greater than or equal to the area of ​​the antenna circuit.

[0044] According to the display module of the embodiment of the present invention, the metal foil is arranged at a position corresponding to the antenna circuit, and the area thereof is greater than or equal to the area of ​​the antenna circuit, thereby being able to effectively shield signal interference to the antenna electrode and improve the antenna's transceiver performance.

[0045] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, which includes: the display module described in the above embodiment.

[0046] Other components of the electronic device according to the embodiment of the present invention, such as a housing and operations, are known to those skilled in the art and will not be described in detail here.

[0047] An electronic device according to an embodiment of the present invention includes a shell and an antenna integrated device as described below, wherein the antenna integrated device is capable of effectively shielding signal interference to the antenna electrode and improving the antenna's transceiver performance by respectively arranging an antenna circuit and a metal foil on both sides of an edge of a display panel and connecting the antenna to a flexible circuit board.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A display module, characterized in that: include: An antenna and a display panel, wherein the antenna comprises an antenna circuit, a metal foil and a flexible circuit board, wherein the antenna circuit and the metal foil are respectively arranged on a first surface and a second surface opposite to the display panel, and the antenna circuit is connected to the flexible circuit board, and the metal foil is fixed by the flexible circuit board, the antenna circuit comprises a horizontally distributed antenna electrode and an antenna ground electrode, and the flexible circuit board comprises from top to bottom: a first substrate layer, a metal layer, and a second substrate layer, wherein the second substrate layer is partially bonded to the metal layer, and at a portion where the second substrate layer is separated from the metal layer, the second substrate layer is used to fix the metal foil, the metal layer is connected to the antenna circuit, and the metal foil serves as an antenna ground electrode in a vertical direction of the antenna circuit.

2. The display module according to claim 1, characterized in that: The antenna electrode and the antenna ground of the antenna circuit are both connected to the metal layer through binding electrodes.

3. The display module according to claim 1, characterized in that: In a portion where the second base material layer is separated from the metal layer, an insulating layer is provided under the metal layer.

4. The display module according to claim 1, characterized in that: The position of the metal foil on the second surface corresponds to the position of the antenna circuit on the first surface.

5. The display module according to claim 4, characterized in that: The area of ​​the metal foil is greater than or equal to the area of ​​the antenna circuit.

6. The display module according to claim 1, characterized in that: The metal foil is copper foil.

7. The display module according to claim 1, characterized in that: The metal layer is copper foil.

8. An electronic device, characterized in that: include: The display module according to any one of claims 1 to 7.

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