CN111276063A - Display module and electronic equipment - Google Patents

Abstract

The present invention provides a display module and electronic equipment, and relates to the technical field of communication equipment. The display module includes an antenna array, a flexible circuit board, a radio frequency integrated circuit and a screen display unit; wherein, the antenna array is arranged on the flexible circuit board. On a circuit board, the flexible circuit board is electrically connected with the screen display unit; the radio frequency integrated circuit is arranged on the flexible circuit board and is electrically connected with the antenna array. The embodiment of the present invention reduces the space occupied by the antenna array of the electronic device, which is beneficial to the miniaturized design of the electronic device.

Description

A display module and electronic equipment

technical field

The present invention relates to the technical field of communication equipment, and in particular, to a display module and an electronic device.

Background technique

With the rapid development of wireless communication technology, especially with the upcoming commercial use of 5G, the application scenarios of wireless communication systems are becoming more and more abundant, so the requirements for antennas, one of the key components of wireless communication systems, are getting higher and higher. On the one hand, in some application scenarios, the antenna needs to have conformality, concealment, and security in order to integrate wireless products such as automobiles, smart wearables, and smart homes. On the other hand, with the increasing transmission rate of wireless communication systems high, the communication capacity is getting larger and larger, so that the carrier frequency is getting higher and higher, and the path loss caused by the carrier frequency is getting larger and larger, so that the array antenna needs to increase the gain to overcome the influence of the path loss, and in order to High gain and simultaneous beam scanning or beamforming requires the use of phased antenna array technology, which requires the integration of more and more antennas in a limited space, which requires traditional antenna design. On the basis of the method, other antenna spaces can be opened up. Especially with the rise of 5G and full-screen mobile phones (or other wireless communication products), the number of antennas is increasing, and the pursuit of the ultimate full-screen effect has led to the continuous compression of the antenna space.

At present, the mainstream millimeter-wave antenna design scheme mainly adopts the technology and process of Antenna in Package (AIP), as shown in Figure 1, that is, the millimeter-wave array antenna, Radio Frequency Intergarted Circuit (RFIC) And a power management integrated circuit (Power Management Intergarted Circuit, PMIC) is integrated in the AIP module 11 . In practical applications, the module is placed inside the electronic device, which occupies a large space of the electronic device, which is not conducive to the miniaturization of the electronic device.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a display module and an electronic device, so as to solve the problem that the antenna array occupies a large space of the electronic device, which is not conducive to the miniaturization of the electronic device.

In a first aspect, an embodiment of the present invention provides a display module applied to electronic equipment, including an antenna array, a flexible circuit board, a radio frequency integrated circuit, and a screen display unit;

Wherein, the antenna array is arranged on the flexible circuit board, and the flexible circuit board is electrically connected with the screen display unit;

The radio frequency integrated circuit is arranged on the flexible circuit board and is electrically connected with the antenna array.

In a second aspect, an embodiment of the present invention provides an electronic device, including the display module described in the first aspect.

In the embodiment of the present invention, the display module includes an antenna array, a flexible circuit board, a radio frequency integrated circuit, and a screen display unit; wherein, the antenna array is arranged on the flexible circuit board, and the flexible circuit board is connected to the The screen display unit is electrically connected; the radio frequency integrated circuit is arranged on the flexible circuit board and is electrically connected with the antenna array. The embodiment of the present invention reduces the space occupied by the antenna array of the electronic device, which is beneficial to the miniaturized design of the electronic device.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic structural diagram of an electronic device provided by the prior art;

2 is one of the schematic structural diagrams of a display module provided by an embodiment of the present invention;

3 is a second schematic structural diagram of a display module provided by an embodiment of the present invention;

4 is a third schematic structural diagram of a display module provided by an embodiment of the present invention;

5 is a fourth schematic structural diagram of a display module provided by an embodiment of the present invention;

FIG. 6 is a fifth schematic structural diagram of a display module provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Unless otherwise defined, technical or scientific terms used in the present invention should have the ordinary meaning as understood by those of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and similar terms used herein do not denote any order, quantity, or importance, but are merely used to distinguish different components. Likewise, "a" or "an" and the like do not denote a quantitative limitation, but rather denote the presence of at least one. Words like "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right", etc. are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

2 , an embodiment of the present invention provides a display module for use in electronic equipment, the display module includes an antenna array 21 , a flexible circuit board 22 , a radio frequency integrated circuit 23 and a screen display unit 24 ;

Wherein, the antenna array 21 is disposed on the flexible circuit board 22, and the flexible circuit board 22 is electrically connected to the screen display unit 24;

The radio frequency integrated circuit 23 is disposed on the flexible circuit board 22 and is electrically connected to the antenna array 21 .

The electronic device may include a display screen, and the display screen may include the display module. The display screen may be a display screen with a full incell structure, or a display screen with an Amoeld structure, or a display screen with a hybrid incell structure, etc. The embodiment of the present invention does not limit the structure of the display screen formed by the display module. . The screen display unit 24 may be a liquid crystal display unit, or may also be an organic light emitting diode display unit, and the flexible circuit board 22 may be used to drive the screen display unit 24 to display.

In addition, the frequencies at which the antenna array 21 receives and transmits beams may be set according to actual needs. For example, in this embodiment of the present invention, the frequencies at which the antenna array 21 receives and transmits may be 60G. It should be noted that, according to the wavelength, the above-mentioned antenna array 21 may be referred to as a millimeter-wave antenna array. The antenna array 21 may include patch antenna units, or the antenna array 21 may include Yagi antennas, or the antenna array 21 may include dipole antennas, etc. The specific expression form of the antenna array 21 is not affected by the embodiment of the present invention. be limited.

Further, the antenna array 21 may include a plurality of patch antenna units, and the patch antenna units may be designed with copper foil, or may also be designed with other conductive materials. For example, the antenna array 21 can be a millimeter-wave antenna array, each millimeter-wave antenna array can be composed of 4 patch antenna units, each patch antenna unit can be designed with copper foil, and the patch antenna unit designed with copper foil can be The antenna array 21 is made to have good impedance.

In addition, the number of the antenna arrays 21 may be one or more. The antenna array 21 may be located at any position of the flexible circuit board 22 (FPC), for example, may be located at the upper left corner, or the upper right corner, etc. of the flexible circuit board 22 . In the case where the number of the antenna arrays 21 is multiple, the number of the radio frequency integrated circuits 23 may be one, and the multiple antenna arrays 21 are all electrically connected to the radio frequency integrated circuit 23, or the radio frequency integrated circuits 23 are all electrically connected. The number of integrated circuits 23 can be the same as the number of the antenna arrays 21, and each antenna array 21 is electrically connected to one radio frequency integrated circuit 23 in one-to-one correspondence. The wiring path between them is shorter, so that the loss of the wiring path is small, and the performance of the antenna is better. As shown in FIG. 3 , the number of the antenna arrays 21 is two, and each antenna array 21 is electrically connected to a radio frequency integrated circuit RFIC 23 in a one-to-one correspondence, and the two antenna arrays 21 are located on two sides of the screen driving line 25 respectively. On the side, the flexible circuit board 22 may also be provided with a first component area 26, and components such as capacitors, resistors, and inductors are arranged in the first component area 26. The flexible circuit board 22 may also be provided with backlit pads 27 .

Further, the antenna array 21 can be electrically connected to the radio frequency integrated circuit 23 through the traces of the flexible circuit board 22. Taking the traces of the flexible circuit board 22 as copper foil wires as an example, the antenna array 21 can be connected to the radio frequency integrated circuit 23 through the copper foil wires. The radio frequency integrated circuit 23 is electrically connected. For example, the antenna array 21 may include at least two patch antenna units, and each of the at least two patch antenna units is electrically connected to the radio frequency integrated circuit 23 through copper foil wires.

It should be noted that the flexible circuit board 22 may be disposed below the display screen, or may also be disposed above, left or right of the display screen, and so on. The flexible circuit board 22 may only be provided with a screen driving chip; or, the flexible circuit board 22 may be provided with a screen driving chip and a touch detection chip at the same time, for example, a display module in a display screen with a full incell structure The corresponding flexible circuit board 22; alternatively, the flexible circuit board 22 may include a first sub-flexible circuit board and a second sub-flexible circuit board, and the first sub-flexible circuit board may be provided with the screen driver chip, so The touch detection chip may be disposed on the second sub-flexible circuit board, for example, a flexible circuit board corresponding to the display module in the display screen of the Amoeld structure.

The above-mentioned electronic devices may include: mobile phones, tablet computers, e-book readers, MP3 players, MP4 players, digital cameras, laptop computers, in-vehicle computers, desktop computers, set-top boxes, smart TVs, and wearable devices. at least one.

In the embodiment of the present invention, the display module includes an antenna array 21, a flexible circuit board 22, a radio frequency integrated circuit 23 and a screen display unit 24; wherein, the antenna array 21 is arranged on the flexible circuit board 22, so The flexible circuit board 22 is electrically connected to the screen display unit 24 ; the radio frequency integrated circuit 23 is disposed on the flexible circuit board 22 and is electrically connected to the antenna array 21 . The embodiment of the present invention reduces the space occupied by the antenna array of the electronic device, which is beneficial to the miniaturized design of the electronic device, and the antenna array designed in the embodiment of the present invention does not need to occupy the space of other antennas disposed on the back cover of the electronic device, thereby improving the efficiency of the electronic device. performance of the antenna.

Optionally, the flexible circuit board 22 is provided with a connector, and the radio frequency integrated circuit 23 is electrically connected to the main board of the electronic device through the connector.

In this embodiment, the connector may be a board to board (Board to Board, BTB) connector. Since the connector is used to realize the electrical connection between the flexible circuit board 22 and the main board, the independence between the flexible circuit board 22 and the main board can be ensured, and disassembly and assembly can be facilitated.

Optionally, as shown in FIG. 4 , the number of the antenna arrays 21 is multiple, the number of the radio frequency integrated circuits 23 is one, and the multiple antenna arrays 21 are all electrically connected to the radio frequency integrated circuit 23 .

Wherein, the radio frequency integrated circuit 23 can provide feed signals for the plurality of antenna arrays 21, and the radio frequency integrated circuit 23 can also be electrically connected to the main board of the electronic device through a connector. Taking the display module including two millimeter-wave antenna arrays as an example, the radio frequency integrated circuit 23 can provide feed signals for the two millimeter-wave antenna arrays. As shown in FIG. 5 , the number of the antenna arrays 21 is two, the two antenna arrays 21 are both electrically connected to the radio frequency integrated circuit 23 , and the two antenna arrays 21 are located on both sides of the screen driving line 25 respectively.

In this embodiment, the number of the antenna arrays 21 is multiple, the number of the radio frequency integrated circuits 23 is one, and the multiple antenna arrays 21 are all electrically connected to the radio frequency integrated circuit 23, and multiple radio frequency integrated circuits are not required. The integrated circuit 23 can reduce the cost.

Optionally, as shown in FIG. 2 , the flexible circuit board 22 is provided with a screen driving line 25 , the flexible circuit board 22 and the screen display unit 24 are electrically connected through the screen driving line 25 , and the antenna is electrically connected. The array 21 is located on the side of the flexible circuit board 22 where the screen driving lines 25 are arranged;

In the case that the number of the antenna array 21 is one, the antenna array 21 is located at either end of the screen driving line 25;

When the number of the antenna arrays 21 is at least two, the antenna arrays 21 are located at either end of the screen driving line 25 or at both ends of the screen driving line 25 respectively.

Wherein, the screen driving line 25 can be connected with a screen driving chip, and the screen driving chip drives the screen display unit 24 to display through the screen driving line 25, so that the display screen is displayed. Taking the display module including two millimeter-wave antenna arrays as an example, the two millimeter-wave antenna arrays may be located at two ends of the screen driving line 25 respectively.

In this embodiment, the antenna array 21 is located on the side of the flexible circuit board 22 where the screen driving lines 25 are provided, and is located at either end of the screen driving lines 25 or on the screen driving lines 25 respectively. The two ends of the antenna array 21 are less interfered by other components on the flexible circuit board 22, which can further improve the performance of the antenna.

Optionally, the flexible circuit board 22 is further provided with a screen driving chip and a touch detection chip, and both the screen driving chip and the touch detection chip are connected to the main board through the connector.

The screen driver chip may be a driver chip of the screen display unit 24 for driving the screen display unit 24 to display, and the touch detection chip may be electrically connected to the touch sensor for detecting touch information of the touch sensor.

In this embodiment, the screen driving chip and the touch detection chip are arranged on the flexible circuit board 22, which can share the connector with the radio frequency integrated circuit 23 to realize the connection with the main board, so the space can be effectively saved, which is beneficial to the electronic equipment. Miniaturized design.

Optionally, the flexible circuit board 22 includes a first sub-flexible circuit board and a second sub-flexible circuit board, the first sub-flexible circuit board is provided with the screen driver chip, and the second sub-flexible circuit board is The touch detection chip is disposed thereon.

In this embodiment, the screen driving chip and the touch detection chip are located on different sub-flexible circuit boards, and the screen driving circuit and the touch detection circuit can be designed on different sub-flexible circuit boards respectively, which facilitates the design of the circuit structure.

Optionally, when the number of the antenna array 21 is one, the antenna array 21 is disposed on the first sub-flex circuit board or the second sub-flex circuit board;

When the number of the antenna arrays 21 is at least two, the antenna arrays 21 are provided on the first sub-flex circuit board and/or the second sub-flex circuit board.

Wherein, as shown in FIG. 6 , the flexible circuit board 22 is a flexible circuit board corresponding to the display module in the display screen of the Amoeld structure. The flexible circuit board 22 may include a first sub-flexible circuit board 221 and a second sub-flexible circuit board 222, the second sub-flexible circuit board 222 may be provided with a touch detection chip 28, and the antenna array 21 may be provided on the second sub-flexible circuit board 222 The lower left or lower right corner of the board 222 . The antenna array 21 may also be disposed at the lower left corner or the lower right corner of the first sub-flexible circuit board 221 . The first sub-flex circuit board 221 may also be provided with a FOF area 29 , and the FOF area 29 is used to lead the wires of the second sub-flex circuit board 222 to the first sub-flex circuit board 221 . A second component area 30 and a third component area 31 may also be provided on the first sub-flex circuit board 221, and capacitors, resistors, inductances, etc. may be arranged in the second component area 30 and the third component area 31. components. A connector 32 may also be provided on the first sub-flex circuit board 221, and the connector 32 is used for connecting with the main board.

In this embodiment, when the number of the antenna arrays 21 is at least two, the at least two antenna arrays 21 may be respectively located on the first sub-flex circuit board and the second sub-flex circuit board . Taking the display module including two millimeter-wave antenna arrays as an example, one millimeter-wave antenna array may be provided on the first sub-flexible circuit board, and another millimeter-wave antenna array may be provided on the second sub-flexible circuit board.

Optionally, the antenna array 21 includes at least two patch antenna units, and each of the at least two patch antenna units is electrically connected to the radio frequency integrated circuit 23 through a copper foil wire.

In this embodiment, the antenna array 21 includes at least two patch antenna units, and each patch antenna unit in the at least two patch antenna units is electrically connected to the radio frequency integrated circuit 23 through copper foil wires, The antenna array 21 can be designed during the production of the flexible circuit board 22 without adding an additional hot pressing process, which can improve the efficiency of designing the antenna array 21 .

Optionally, the antenna array 21 is a millimeter wave antenna array.

The embodiments of the present invention also provide an electronic device, including the display module as described in the embodiments of the present invention.

Since other structures of the electronic device are in the prior art, and the display module has been described in detail in the above-mentioned embodiment, the structure of the specific electronic device will not be repeated in this embodiment.

In an embodiment of the present invention, a display module of an electronic device includes an antenna array, a flexible circuit board, a radio frequency integrated circuit, and a screen display unit; wherein the antenna array is disposed on the flexible circuit board, and the flexible circuit board is connected to the flexible circuit board. The screen display unit is electrically connected; the radio frequency integrated circuit is arranged on the flexible circuit board and is electrically connected to the antenna array. The embodiment of the present invention reduces the space occupied by the antenna array of the electronic device, which is beneficial to the miniaturized design of the electronic device, and the antenna array designed in the embodiment of the present invention does not need to occupy the space of other antennas disposed on the back cover of the electronic device, thereby improving the efficiency of the electronic device. performance of the antenna.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art who is familiar with the technical scope disclosed by the present invention can easily think of changes or replacements, which should cover within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. A display module is applied to electronic equipment and is characterized by comprising an antenna array, a flexible circuit board, a radio frequency integrated circuit and a screen display unit;

the antenna array is arranged on the flexible circuit board, and the flexible circuit board is electrically connected with the screen display unit;

the radio frequency integrated circuit is arranged on the flexible circuit board and is electrically connected with the antenna array.

2. The display module assembly according to claim 1, wherein a connector is disposed on the flexible circuit board, and the rf ic is electrically connected to a main board of the electronic device through the connector.

3. The display module of claim 1, wherein the number of the antenna arrays is one, and the number of the rf ic is two, and the plurality of antenna arrays are electrically connected to the rf ic.

4. The display module assembly according to claim 1, wherein the flexible circuit board is provided with a screen driving line, the flexible circuit board is electrically connected to the screen display unit through the screen driving line, and the antenna array is located at a side of the flexible circuit board on which the screen driving line is provided;

in the case where the number of the antenna arrays is one, the antenna arrays are located at either end of the screen driving lines;

in the case where the number of the antenna arrays is at least two, the antenna arrays are located at either end of the screen driving lines or at both ends of the screen driving lines, respectively.

5. The display module assembly according to claim 2, wherein a screen driving chip and a touch detection chip are further disposed on the flexible circuit board, and both the screen driving chip and the touch detection chip are connected to the main board through the connector.

6. The display module assembly according to claim 5, wherein the flexible circuit board comprises a first sub-flexible circuit board and a second sub-flexible circuit board, the first sub-flexible circuit board is provided with the screen driving chip, and the second sub-flexible circuit board is provided with the touch detection chip.

7. The display module assembly according to claim 6, wherein in a case that the number of the antenna arrays is one, the antenna arrays are disposed on the first sub flexible circuit board or the second sub flexible circuit board;

in case the number of the antenna arrays is at least two, the antenna arrays are arranged on the first sub-flex circuit board and/or the second sub-flex circuit board.

8. The display module of claim 1, wherein the antenna array comprises at least two patch antenna units, and each of the at least two patch antenna units is electrically connected to the radio frequency integrated circuit through a copper foil wire.

9. The display module of claim 1, wherein the antenna array is a millimeter wave antenna array.

10. An electronic device, comprising the display module according to any one of claims 1 to 9.

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