CN112612323B - Display module and electronic equipment - Google Patents

Abstract

The application discloses a display module and electronic equipment, and belongs to the technical field of communication. The display module assembly includes first base plate, second base plate, touch-control layer and at least one antenna, wherein: the touch layer and the second substrate are sequentially stacked on the first substrate; the antenna comprises an antenna pattern and a ground wire pattern, wherein the antenna pattern is arranged in the peripheral area of the upper surface of the second substrate, the ground wire pattern is arranged in the peripheral area of the touch layer, and orthographic projections of the antenna pattern and the ground wire pattern on the first substrate are at least partially overlapped. In the embodiment of the application, the touch layer and the ground wire pattern are arranged on the same layer, so that the flexible circuit board of one touch layer can be saved, the integration level is improved, and the design space of the antenna is wider.

Description

Display module and electronic equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a display module and electronic equipment.

Background

Currently, high frequency communication antennas are typically millimeter antennas, which may be integrated on the screen. In the existing design scheme, an antenna layer is generally manufactured independently, the antenna layer is arranged on the upper surface of a screen, and in addition, in order to improve the antenna effect, a ground layer is also required to be manufactured on the back of the antenna. The design can increase the thickness of two layers of the display module, is unfavorable for the lightness and thinness of the display module, and the extra two-layer design can increase the manufacturing process of the display module, so that the cost is higher.

Disclosure of Invention

The embodiment of the application aims to provide a display module and electronic equipment, which can solve the problems of great thickness increase, manufacturing process increase and cost increase of a screen antenna in the prior art.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, an embodiment of the present application provides a display module, where the display module includes a first substrate, a second substrate, a touch layer, and at least one antenna, where:

the touch layer and the second substrate are sequentially stacked on the first substrate;

The antenna comprises an antenna pattern and a ground wire pattern, wherein the antenna pattern is arranged in the peripheral area of the upper surface of the second substrate, the ground wire pattern is arranged in the peripheral area of the touch layer, and orthographic projections of the antenna pattern and the ground wire pattern on the first substrate are at least partially overlapped.

Optionally, the method further comprises:

The antenna comprises a radio frequency module and a first flexible circuit board, wherein the first flexible circuit board is bent from the side edges of the first substrate and the second substrate to the lower surface of the first substrate, and the antenna pattern is connected with the radio frequency module through the first flexible circuit board.

Optionally, the method further comprises:

The second flexible circuit board is connected with the binding area pins of the first substrate, and the touch lead of the touch layer is connected with the binding area pins of the first substrate through at least one conductive pin.

Optionally, the first substrate and the second substrate are adhered by a frame glue, and the frame glue coats the conductive pins.

Optionally, the ground wire pattern and the touch layer are arranged in the same layer and the same material.

Optionally, the ground wire pattern and the touch layer are made of transparent conductive materials.

Optionally, the ground pattern and the antenna pattern are in a grid-like structure.

Optionally, the antenna pattern is made of metal or metal oxide.

Optionally, the display module further includes:

The polaroid and the cover plate are sequentially stacked on one side surface, far away from the first substrate, of the second substrate.

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

In the embodiment of the application, the touch layer and the ground wire pattern are arranged on the same layer, so that a flexible circuit board of one touch layer can be saved, the integration level is improved, and the design space of the antenna is wider.

Drawings

Fig. 1 is a schematic diagram of a prior art screen antenna;

fig. 2 is a schematic diagram of a display module according to an embodiment of the application;

FIG. 3 is an enlarged schematic view of region C of FIG. 2;

Fig. 4 is a schematic diagram of a positional relationship between a touch layer and a ground pattern according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view taken along section line A-A in FIG. 3;

fig. 6 is a schematic connection diagram of a second flexible circuit board and a touch screen according to an embodiment of the present application;

FIG. 7 is a schematic cross-sectional view taken along section line B-B in FIG. 6;

fig. 8 is a schematic diagram of an antenna pattern according to an embodiment of the present application;

Fig. 9 is a schematic diagram of an antenna layout position according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The display module and the electronic device provided by the embodiment of the application are described in detail below by means of specific embodiments and application scenes thereof with reference to the accompanying drawings.

Currently, the 5G communication technology is becoming more popular, and the 5G communication technology puts more demands on terminal antennas. The transmission rate of the wireless communication of the terminal is higher and higher, the communication capacity is higher and higher, the carrier frequency is higher and higher, the loss of antenna signals is higher and higher, the loss is reduced by using an array antenna, more and more antennas are required to be integrated in a limited space by using the array antenna, the internal space of the terminal is limited, more antennas than before are required to be integrated in the limited space, the higher the frequency band is, the higher the communication speed is, the shorter the length of the antenna is, and millimeter wave communication becomes a hot spot of the next extremely-fast communication. For example, the antenna length in the 30GHz band is about 2.5mm millimeters and the antenna length in the 60GHz band is about 1.25mm.

Fig. 1 is a schematic structural diagram of a screen antenna in the prior art. In some conventional solutions, the antenna is integrated on the display screen to save space occupied by the antenna, as shown in fig. 1, where the conventional high-frequency communication antenna is a millimeter wave antenna, the antenna is integrated on the display screen, specifically, a lower display layer 105, an upper display layer 104 and a touch screen layer 108 are sequentially stacked, the antenna is disposed in a peripheral area above the touch screen layer 108, and in order to improve the antenna effect, the antenna needs to include an antenna layer 106 and a ground line layer 107, where the antenna layer 106 and the ground line layer 107 are insulated, and the ground line layer 107 is used for reflecting signal waves; the polarizer 103 and the cover plate 101 are arranged above the antenna layer 106 of the antenna, and the polarizer 103 and the cover plate 101 are adhered and fixed through the optical cement 102. However, the design can increase the thickness of at least two layers of the display module, which is unfavorable for the lightness and thinness of the display module, and the extra two layers of design can increase the manufacturing process of the display module, thereby having higher cost and being easy to generate bad product phenomenon.

Therefore, referring to fig. 2 to 4, fig. 2 is a schematic diagram of a display module according to an embodiment of the application, fig. 3 is an enlarged schematic diagram of a region C in fig. 2, and fig. 4 is a schematic diagram of a positional relationship between a touch layer and a ground pattern according to an embodiment of the application. As shown in fig. 2 to fig. 4, the embodiment of the present application provides a display module, which may include a first substrate 207, a second substrate 208, a touch layer and at least one antenna, where the touch layer and the second substrate 208 are sequentially stacked on one side surface of the first substrate 207, that is, the antenna may include an antenna pattern 201 and a ground line pattern 202, the antenna pattern 201 is disposed on a peripheral area of an upper surface of the second substrate 208 (i.e., a surface of the second substrate 208 far away from the first substrate 207), the ground line pattern 202 is disposed on the same layer as the touch layer, that is, the ground line pattern 202 is disposed on a side surface of the first substrate 207 where the touch layer is disposed, and the ground line pattern 202 is disposed on a peripheral area of the touch layer, that is, a non-touch area, or, the antenna pattern 202 and the touch layer are disposed on a lower surface of the second substrate 208 (i.e., a surface of the second substrate 208 near the first substrate 207), and the ground line pattern 202 is disposed on a surface of the first substrate 207, and the ground line pattern 202 is disposed on a surface of the peripheral area of the touch layer, where the antenna pattern is disposed, and the reflection performance of the antenna is improved. In addition, since the touch layer is also disposed on the surface of the second substrate 208 far from the first substrate 207, the touch layer and the ground line pattern 202 are both disposed on the surface of the second substrate 208 far from the first substrate 207, so that the ground line pattern 202 and the touch layer in the embodiment of the application can be disposed on the same layer and the same material, thereby reducing the number of layers of the display module, improving the light and thin degree of the display module, and simultaneously reducing the manufacturing process of the display module and saving the cost.

As shown in fig. 3, in the embodiment of the present application, at least one antenna in the display module is used, and as the carrier frequency is higher and higher, the loss of the antenna signal is larger and larger, and the loss needs to be reduced by using the array antenna, so in order to improve the performance of the antenna, the antenna in the display module may include a plurality of antennas, where the plurality of antennas are disposed in the peripheral area of the display module, and the plurality of antennas together form the array antenna. The antenna pattern 201 in the embodiment of the present application is exemplified by a multiple-input multiple-output (Multi Input Multi Output, MIMO) antenna.

As shown in fig. 4, a polarizer 209 and a cover plate 211 are further disposed on a surface of the second substrate 208, which is far away from the first substrate 207, and the polarizer 209 and the cover plate 211 may be connected by a connection layer 210, and optionally, the connection layer 210 may use an optical double-sided tape (Optically CLEAR ADHESIVE, OCA) to ensure light transmittance.

In the embodiment of the present application, the touch layer includes a plurality of first touch electrodes 203 and a plurality of second touch electrodes 204, the plurality of first touch electrodes 203 and the plurality of second touch electrodes 204 are distributed in rows and columns, and the first touch electrodes 203 and the second touch electrodes 204 are used for determining touch positions; the first touch electrodes 203 are arranged in rows, and the second touch electrodes 204 are arranged in columns, which are staggered. In the embodiment of the application, the antenna is disposed at the periphery of the touch layer, for example, a portion of at least one first touch electrode 203 and/or second touch electrode 204 in the edge area of the touch layer may be left out, for example, a shape with a notch or a groove is formed, so as to place at least one antenna, thereby implementing the same layer arrangement of the antenna and the touch layer, so as to achieve the purpose of reducing the thickness of the display module.

Please refer to fig. 5, which is a schematic cross-sectional view of fig. 3 along the line A-A. As shown in fig. 5, in the embodiment of the present application, the first touch electrode 203 may include a plurality of first touch units, the second touch electrode 204 may include a plurality of second touch units, wherein two adjacent first touch units in the same row are connected by forming a bridge 205 (different layer from the first touch electrode 203) through a bridge process, two adjacent second touch units in the same column are directly connected by a connecting bridge 206 formed by the same layer, and the insulating layer 214 is used for isolating the connection between the first touch electrode 203 and the second touch electrode 204.

In this embodiment of the present application, the display module further includes a radio frequency module and a first flexible circuit board 212, one end of the first flexible circuit board 212 is connected to the antenna pattern 201 in the antenna, and then bends from the sides of the first substrate 207 and the second substrate 208 to extend to the lower surface (the surface far away from the second substrate 208) of the first substrate 207, and finally the other end of the first flexible circuit board 212 is connected to the radio frequency module. By means of the connection mode, signals received by the antenna can be transmitted to the radio frequency module with the lowest loss. Optionally, the radio frequency module may include a radio frequency processor.

Referring to fig. 6 and fig. 7, fig. 6 is a schematic connection diagram of a second flexible circuit board and a touch screen according to an embodiment of the application, and fig. 7 is a schematic cross-sectional view along a section line B-B in fig. 6. As shown in fig. 6 and 7, the display module further includes a second flexible circuit board 213, a binding area pin 215 is disposed on a surface of the first substrate 207, which is close to the second substrate 208, one end of the second flexible circuit board 213 is connected to the binding area pin 215, the touch layer is connected to a touch lead 218 disposed in a peripheral area of the second flexible circuit board 213, and the touch lead 218 is further connected to the binding area pin 215 through at least one conductive pin 217, so that a touch signal of the touch layer is transmitted to a corresponding device from the other end of the second flexible circuit board 213, and thus, the flexible circuit board and a primary binding process of one touch layer can be reduced, the sealing performance of the wiring is better, and the corrosion defect of the wiring is reduced; the first substrate 207 and the second substrate 208 are fixed and sealed by the frame glue 216, the frame glue 216 may be designed in an M-shaped groove, and the frame glue 216 wraps the plurality of conductive pins 217 therein, so that the plurality of pins 217 are isolated from each other, and short circuit is avoided. Alternatively, the conductive pins 217 may be conductive gold balls or conductive substances such as solder paste.

Fig. 8 is a schematic diagram of an antenna pattern according to an embodiment of the application. In the embodiment of the present application, alternatively, the antenna pattern 201 and the ground pattern 202 may be in a metal grid structure, and the antenna pattern 201 may be in a rectangular fan shape, so as to reduce the occupied space, reduce the weight of the antenna, and not affect the display light transmission. In the embodiment of the application, the width and the gap of the metal grid can be adjusted according to the requirement, the width of a common metal wire is 0.1-30 mu m, and the gap is 30-50 mu m; the thickness of each layer of the display module can be adjusted between 0.1 μm and 200 μm according to the requirement.

In some embodiments of the present application, the ground line pattern 202 and the touch layer may be made of transparent conductive materials, so as to ensure that the ground line pattern 202 can reflect signal waves, and the touch layer can sense touch positions, and the display effect of the display module is not affected.

Optionally, in the embodiment of the present application, the ground pattern 202, the first touch electrode 203, and the second touch electrode 204 may be made of conductive transparent indium tin oxide, metal mesh, nano-coating, or other materials; the insulating layer 214 may be made of an insulating material such as silicon dioxide, silicon oxynitride, or organic resin; the bridge 205, the antenna pattern 201, etc. may employ a metal oxide conductive layer, or may employ a metal conductive layer such as molybdenum, aluminum, titanium, silver, etc.

Fig. 9 is a schematic diagram of layout positions of an antenna according to an embodiment of the application. As shown in fig. 9, in the embodiment of the present application, the second substrate 208 may be rectangular, and at least one antenna may be disposed on a long side or a short side of the second substrate 208, which is far away from the first substrate 207, and the touch layer directs the touch signal through the conductive pins 217, the bonding area pins 215, the second flexible circuit board 213, and so on.

In the embodiment of the application, the touch layer is arranged on the upper surface of the second substrate and is arranged on the same layer as the ground wire pattern, so that the flexible circuit board of one touch layer can be saved, the integration level is improved, the design space of the antenna is wider, the thickness of the display module can be reduced, and the sealing property of the display module package can be improved.

The embodiment of the application further provides electronic equipment, which comprises the display module set in the embodiment. Because the display module in the above embodiment has the above beneficial effects, the electronic device in the embodiment of the present application also has the above beneficial effects, and in order to avoid repetition, the description is omitted here.

The electronic device in the embodiment of the application can be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), etc., and the non-mobile electronic device may be a personal computer (personal computer, PC), a Television (TV), a teller machine, a self-service machine, etc., and the embodiments of the present application are not limited in particular.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, features described with reference to certain examples may be combined in other examples.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims (8)

1. The utility model provides a display module assembly, its characterized in that includes first base plate, second base plate, touch-control layer and at least one antenna, wherein:

the touch layer and the second substrate are sequentially stacked on the first substrate;

the antenna comprises an antenna pattern and a ground wire pattern, the antenna pattern is arranged in the peripheral area of the upper surface of the second substrate, the ground wire pattern is arranged in the peripheral area of the touch layer, and orthographic projections of the antenna pattern and the ground wire pattern on the first substrate are at least partially overlapped;

the display module further comprises a radio frequency module and a first flexible circuit board, the first flexible circuit board is bent from the side edges of the first substrate and the second substrate to the lower surface of the first substrate, and the antenna pattern is connected with the radio frequency module through the first flexible circuit board;

The display module further comprises a second flexible circuit board, the second flexible circuit board is connected with the binding area pins of the first substrate, and the touch lead of the touch layer is connected with the binding area pins of the first substrate through at least one conductive pin.

2. The display module assembly of claim 1, wherein the first substrate and the second substrate are adhered by a sealant, and the sealant encapsulates the conductive pins.

3. The display module of claim 1, wherein the ground pattern and the touch layer are disposed in the same layer of material.

4. The display module of claim 1, wherein the ground pattern and the touch layer are transparent conductive materials.

5. The display module of claim 1, wherein the ground pattern and the antenna pattern are in a grid-like structure.

6. The display module of claim 5, wherein the antenna pattern is a metal material or a metal oxide material.

7. The display module of claim 1, further comprising:

The polaroid and the cover plate are sequentially stacked on one side surface, far away from the first substrate, of the second substrate.

8. An electronic device comprising a display module according to any one of claims 1-7.