WO2022089567A1 - 集成天线的触控面板和电子设备 - Google Patents

集成天线的触控面板和电子设备 Download PDF

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Publication number
WO2022089567A1
WO2022089567A1 PCT/CN2021/127283 CN2021127283W WO2022089567A1 WO 2022089567 A1 WO2022089567 A1 WO 2022089567A1 CN 2021127283 W CN2021127283 W CN 2021127283W WO 2022089567 A1 WO2022089567 A1 WO 2022089567A1
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WO
WIPO (PCT)
Prior art keywords
antenna
touch
hole
layer
slit
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Application number
PCT/CN2021/127283
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English (en)
French (fr)
Inventor
邾志民
马荣杰
Original Assignee
维沃移动通信有限公司
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2022089567A1 publication Critical patent/WO2022089567A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors

Definitions

  • the present application belongs to the field of communication technologies, and in particular relates to a touch panel with integrated antenna and an electronic device.
  • a millimeter-wave antenna made of a transparent conductive material is arranged on the display screen of an electronic device with a control function, and in order to prevent the metal layer from reducing the antenna performance, a touch layer cannot be arranged on the display screen.
  • the millimeter-wave antenna in the related art can only be arranged on a display screen without a touch function.
  • the purpose of the embodiments of the present application is to provide an antenna-integrated touch panel and electronic device, which can solve the problem that the millimeter-wave antenna in the related art can only be arranged on a display screen without touch function.
  • an antenna-integrated touch panel including:
  • a touch layer wherein a first through hole and a first slit are formed on the touch layer, a first end of the first slit penetrates through the edge of the touch layer, and a second end of the first slit is connected to the touch layer. the first through hole is connected;
  • a first antenna feeder with a gap between the first antenna feeder and two opposite side walls of the first slot, and a first end of the first antenna feeder extending to the first through the first slot In the through hole, the second end of the first antenna feed line is used for connecting with the feed source.
  • an embodiment of the present application provides an electronic device, including the touch panel with integrated antenna described in the first aspect.
  • a slot antenna is formed by opening a first through hole and a first slot on the touch layer, and extending the antenna feeder into the first through hole along the first slot, so as to realize the application of the touch panel on the touch panel.
  • the slot antenna is integrated on the upper part, which avoids adding a metal carrier of the slot antenna, and can reduce the occupied space of the slot antenna.
  • FIG. 1 is one of the structural diagrams of a touch panel with integrated antenna provided by an embodiment of the present application
  • FIG. 2 is a disassembled view of a touch panel with integrated antenna provided by an embodiment of the present application
  • FIG. 3 is a second structural diagram of a touch panel with integrated antenna provided by an embodiment of the present application.
  • 4a is one of the structural diagrams of the first antenna feeder of a touch panel with integrated antenna provided by an embodiment of the present application;
  • FIG. 4b is a second structural diagram of a first antenna feeder of an antenna-integrated touch panel provided by an embodiment of the present application.
  • 4c is a third structural diagram of a first antenna feeder of a touch panel with integrated antenna provided by an embodiment of the present application.
  • FIG. 5 is a split view of a liquid crystal polymer (LCP) feeder in the touch panel with integrated antenna provided by an embodiment of the present application;
  • LCP liquid crystal polymer
  • FIG. 6 is a schematic diagram of the installation of the touch panel with integrated antenna provided on the electronic device according to the embodiment of the present application.
  • FIG. 7 is a structural diagram of a display screen of a touch panel including an integrated antenna provided by an embodiment of the present application.
  • Fig. 9 is the transmission efficiency curve diagram of the integrated antenna provided by the embodiment of the present application.
  • FIG. 10 is a radiation pattern of an integrated antenna provided by an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between “first”, “second”, etc.
  • the objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or more than one.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • FIG. 1 is a structural diagram of a touch panel with integrated antenna provided by an embodiment of the present application.
  • the touch panel with integrated antenna includes: a touch layer 1 and a first antenna feeder 2 .
  • the touch layer 1 is made of a conductive material, a first slit 11 and a first through hole 12 are formed on the touch layer 1 , and the first end of the first slit 11 penetrates through the touch layer 1 . edge, the second end of the first slit 11 communicates with the first through hole 12;
  • the first antenna feeder 2 there is a gap between the first antenna feeder 2 and two opposite side walls of the first slot 11 , and the first end of the first antenna feeder 2 extends to the first slot 11 through the first slot 11 .
  • the second end of the first antenna feeder 2 is used for connecting with the feeder.
  • the first through holes 12 and the first slits 11 can be opened in the non-sensitive area of the touch layer 1, and the non-sensitive area can be understood as the area that is touched less frequently, for example, if the touch
  • the non-sensitive area can be close to the left side or the right side of the mobile phone edge of the touch area.
  • the length of the first through hole 12 and the width of the first through hole 12 can be close, and can be 1/2 the length of the radiation wavelength. The size of 1/2 of the radiation wavelength is small, and often only has 1-2mm, the first through hole of 1-2mm is opened on the touch panel, which has less interference to the sensitivity of the touch layer.
  • the shape of the first through hole 12 is not limited to a square structure as shown in FIG. 1 , and it can also be any shape with a similar length and width, such as a circle, an ellipse, and a diamond, which is not specifically limited here. .
  • the axis of symmetry of the first antenna feeder 2 overlaps with the axis of symmetry of the first through hole 12 and the axis of symmetry of the first slot 11 .
  • the first slot 11 is connected to the first through hole 12 .
  • the position of the first through hole 12 is located on the symmetry axis of the first through hole 12, so that the position where the first antenna feeder 2 extending into the first through hole 12 along the first slot 11 is fed into the first through hole 12 is located in the first through hole 12.
  • the axis of symmetry of the hole 12 is located at the center of the first through hole 12 .
  • the first antenna feeder 2 and the touch layer 1 may be located in the same plane, or the first antenna feeder 2 may be slightly thicker than the touch layer 1 , for example, as shown in FIG. 2 , on the touch layer 1
  • the thickness of the first antenna feeder 2 can be equal to the sum of the thicknesses of the optical adhesive layer 20 and the touch layer 1 .
  • the optical adhesive layer 20 may be an optical tape (Optically Clear Adhesive, OCA) layer or an optically clear resin (Optical Clear Resin, OCR) layer.
  • the touch layer can be a transparent conductive film, for example, a thin film, namely an indium tin oxide (Indium Tin Oxide, ITO) transparent conductive film.
  • a transparent touch layer 1 can be integrated on the display layer 40 , and a first through hole 12 and a first slit 11 are opened on the touch layer 1 , and a first slit 11 is arranged in the first slit 11 .
  • the slot antenna 10 is formed by the antenna feeder 2, wherein the touch layer 1 constitutes the reference ground of the slot antenna 10, so that the slot antenna can be integrated on the touch display screen without blocking the display content of the display screen.
  • there is no need to add a carrier for the slot antenna thereby simplifying the manufacturing process of the touch panel with integrated antenna and reducing the cost, and can be used to realize the antenna function without interfering with the touch function.
  • the design scheme of millimeter-wave antenna is mainly: using the technology and process of antenna in package (Antenna in package, AIP), the millimeter-wave array antenna, radio frequency integrated circuit (Radiao Frquency Intergarted Circuit, RFIC) and integrated power supply
  • the management circuit Power Management Intergarted Circuit, PMIC
  • the module When it is installed on a mobile phone, the module is placed inside the mobile phone, which will occupy the installation space of other antennas and cause the performance of other antennas to decrease.
  • the above-mentioned antenna function may be a millimeter-wave antenna.
  • the slot width of the slot antenna 10 may also be changed to change the bandwidth or frequency band of the antenna. etc., for the convenience of description, the following only takes the slot antenna 10 as an example of a millimeter-wave antenna for illustration, and it is not limited that only a millimeter-wave antenna can be integrated on the touch panel provided in the embodiments of the present application.
  • first slits 11 and first through holes 12 distributed in an array can also be opened on the touch layer 1, and antenna feeders are respectively arranged in each of the first slits 11 to form a millimeter-wave antenna array.
  • antenna feeders are respectively arranged in each of the first slits 11 to form a millimeter-wave antenna array.
  • the thickness of the first antenna feeder 2 is also relatively thin, thus limiting the bandwidth coverage of the first antenna feeder 2.
  • the following implementations can be used:
  • the first antenna feeder 2 includes:
  • the end portion 21, the end portion 21 is the first end of the first antenna feeder 2, and the end portion 21 is located in the first through hole 12;
  • the feeding part 22 the first end of the feeding part 22 is connected to the end part 21, the second end of the feeding part 22 extends to the first end of the first slot 11, and is used for connecting with the feed source; There are gaps between the opposite sides of the electrical part 22 and the sidewalls of the first slit 11 respectively, and the feeding part 22 and the touch layer 1 are located on the same plane, so as to be located on the opposite sides of the first slit 11 with the touch layer 1
  • the part of the coplanar waveguide structure 50 is formed.
  • the first through hole 12 can be set in a shape with a close aspect ratio (for example, a center-symmetric structure such as a square, a circle, etc.), so as to form a wide-slot antenna with the first antenna feeder 2, and use the wide-slot antenna Its own broadband characteristics can effectively expand the bandwidth of the antenna.
  • a close aspect ratio for example, a center-symmetric structure such as a square, a circle, etc.
  • the wide-slot antenna is fed using a coplanar waveguide structure.
  • the length and width of the wide-slot antenna are similar, so that the size of the slot is larger, which provides more current paths, so it can achieve a wider bandwidth.
  • the coplanar waveguide feed is used to excite the wide slot Antenna radiation can effectively expand the bandwidth of the antenna, so that the millimeter-wave wide-slot antenna can cover the 57.3-66.7GHz frequency band.
  • a fourth slot 13 is further opened on the touch layer 1 , and the touch of the integrated antenna is
  • the control panel further includes: a second antenna feeder 3, the second antenna feeder 3 and the first antenna feeder 2 have the same structure;
  • the first end of the fourth slit 13 penetrates through the edge of the touch layer 1 , the second end of the fourth slit 13 communicates with the first through hole 12 , and the first slit 11 extends along the first symmetry axis, and the fourth slit 13 extends along the second axis of symmetry.
  • the above-mentioned second antenna feeder 3 and the first antenna feeder 2 have the same structure, which can be understood as: the second antenna feeder 3 and the first antenna feeder 2 have the same shape and structure; A slot 11 extends into the first through hole 12 and has the same positional structure as the gap between opposite sides of the first slot 11 : the first end of the second antenna feeder 3 extends into the fourth slot 13 along the fourth slot 13 . There is a gap in the through hole 12 and the opposite sides of the fourth slot 13 .
  • the feeding part 22 of the first antenna feeder 2 is a coplanar waveguide
  • the feeding part of the second antenna feeder 3 is also a coplanar waveguide.
  • the plane structure of the first through hole 12 can be a square or circular isocenter symmetrical image, then the first antenna feeder 2 and the first slot 11 are rotated 90 degrees along the center point of the first through hole 12 and are respectively connected to the second through hole 12.
  • the antenna feeder 3 and the fourth slot 13 overlap.
  • the slot shape of the wide-slot antenna is preferably a symmetrical shape such as a square or a circle, so that the antenna can be easily de-excited through the antenna feeder ports that are perpendicular to each other, so that the dual-polarization performance of the antenna can be achieved.
  • the width of the end portion 21 along the width direction of the first slit 11 is the first size
  • the width of the power feeding portion 22 along the width direction of the first slit 11 is a second size
  • the first size is larger than the second size
  • the fact that the first size is larger than the second size indicates that the first end of the first antenna feeder 2 has a "T"-shaped structure.
  • the shape of the end 21 of the first antenna feeder 2 is not limited.
  • the rectangle as shown in FIG. 1 may also be a circle as shown in FIG. 4a, a rectangle as shown in FIG. 4b, or an isosceles triangle as shown in FIG. 4c, etc., which are not exhaustive here.
  • the width of the end portion 21 may be greater than the width of the feeder portion 22 when passing through, so as to achieve better impedance matching effect.
  • the touch panel further includes: a feeder 3 connected between the second end of the feeder 22 and the feeder, and the LCP feeder 3 includes: sequentially A first metal layer 33 , a first liquid crystal polymer (Liquid Crystal Polymer, LCP) substrate 31 , a second metal layer 34 , a second LCP substrate 32 and a third metal layer 35 are stacked.
  • LCP Liquid Crystal Polymer
  • the specific structure between the layers in the LCP feed line 3 is as follows: the third metal layer 35 is electrically connected to the touch layer 1 ; the first metal layer 33 is provided with a second gap to divide the first metal layer 33 into first The first metal plate 332 of the strip hole 331 and the first metal strip 333 embedded in the first strip hole 331 have a gap between the first metal strip 333 and the side wall of the first strip hole 331 .
  • the open end of the second slot penetrates through the edge of the first metal layer 33 and faces the first end of the feeding portion 22;
  • a third slit is formed on the second metal layer 34 to divide the second metal layer 34 into a second metal plate 342 having a second strip hole 341 and a second metal strip embedded in the second strip hole 341 343, there is a gap between the second metal strip 343 and the side wall of the second strip hole 341, and the open end of the third gap penetrates the edge of the second metal layer 34 and faces the feed source;
  • the first LCP substrate 31 has metal vias 311 disposed therethrough, and the metal vias 311 are electrically connected to the first metal strip 333 and the second metal strip 343 .
  • the LCP board has the properties of low high frequency loss, good stability, easy to bend, etc., which is convenient to carry the antenna feeder on the LCP board, and can reduce the high frequency loss of the antenna feeder.
  • the first metal strip 333 may be connected to the feeding portion 22 of the first antenna feeder 2 by welding.
  • the millimeter-wave radio frequency signal enters the second metal strip 343 through the radio frequency path.
  • the second metal strip 343 has a stripline structure, which is a fully enclosed feeding structure. In this way, the second metal strip 343 can be reduced in size.
  • the leakage of the electromagnetic wave transmitted on the metal strip 343 avoids the electromagnetic interference of the electromagnetic wave transmitted on the second metal strip 343 to other components in the electronic device.
  • the second metal strip 343 is transformed into the upper-layer coplanar waveguide (Co- Planar Waveguide, CPW) (ie, the first metal strip 333 ), so that the reference ground of the LCP feeder 3 and the reference ground of the first antenna feeder 2 (ie, the ITO patch antenna) are well grounded.
  • CPW Co- Planar Waveguide
  • the LCP feeder 3 adopts the LCP feeder structure based on strip line to coplanar waveguide to feed the antenna.
  • the LCP feeding structure of the electrical and other feeding methods feeds the antenna, which is not specifically limited here.
  • impedance control can be performed on the LCP feeder 3, and the length of the LCP feeder 3 can be shortened as much as possible, so as to further reduce the path loss of the radio frequency signal.
  • the feed source is located in a radio frequency integrated circuit (Radio Frequency Integrated Circuit, RFIC), and the radio frequency integrated circuit is integrated on the LCP board connected to the first antenna feeder 2 .
  • RFIC Radio Frequency Integrated Circuit
  • the above-mentioned LCP board may be the LCP board 4 where the LCP feeder 3 is located, that is, the LCP board 4 and the LCP feeder 3 have an integrated structure, and specifically, the radio frequency integrated circuit can be welded on the LCP feeder 3.
  • the integrated circuit is integrated on the LCP board 4 .
  • the LCP board 4 also carries a touch chip 61
  • the touch panel with integrated antenna further includes a connector 62 connected to the LCP board 4 , the touch The control chip 61 is connected to the connector 62 .
  • the above-mentioned LCP board 4 and the connector 62 may be connected through a flexible printed circuit (Flexible Printed Circuit, FPC) 63 .
  • FPC Flexible Printed Circuit
  • the above-mentioned connector 62 may be a board-to-board (BTB) connector carried by the touch layer 1 .
  • BTB board-to-board
  • the BTB connector of the touch layer 1 can be reused to realize the connection between the antenna and the internal circuit of the electronic device, and there is no need to provide a separate connector for the antenna, which can reduce the space occupied by the connector.
  • the touch panel with integrated antenna provided in the embodiment of the present application may be located in the touch display screen, for example: an active matrix organic light emitting diode or an active matrix organic light emitting diode ( Active-matrix organic light-emitting diode, AMOLED) full-screen module, the full-screen module may include stacking from top to bottom: cover glass 71, first optical adhesive layer 72, polarizer 73, touch Layer 1 , the second optical adhesive layer 74 , the upper glass layer 75 , the lower glass layer 76 and the foam layer 77 .
  • AMOLED Active-matrix organic light-emitting diode
  • the slot antenna 10 is integrated on the touch layer 1 by opening the first through hole 12 and the first slot 11 on the touch layer 1 and correspondingly disposing the first antenna feeder 2 .
  • the above-mentioned full-screen module is connected to the connector 62 through the flexible circuit board 63 connected to the LCP board 4 , so as to be assembled to the electronic device 60 through the connector 62 .
  • the flexible circuit board 63 is connected to the LCP board 4 where the LCP feeder 3 is located, and the radio frequency integrated circuit, the display chip 64 and the touch control chip 61 can be integrated on the LCP board 4 respectively, thereby multiplexing the LCP board 4 of the display screen.
  • the connector 62 realizes the feeding of the slot antenna 10 and the setting of the radio frequency integrated circuit, and it is not necessary to separately set the LCP board and the connector for the slot antenna 10, which effectively saves space.
  • the touch panel with integrated antenna provided by the embodiment of the present application has a small footprint, multiplexed touch layer as the wiring layer of the slot antenna 10, and carries the radio frequency integrated circuit on the LCP of the touch panel itself.
  • the board On the board, and can reuse the connector connected to the LCP board to be assembled on the electronic device, so that the slot antenna 10 does not need to be separately provided with the wiring layer, the LCP board and the connector, thereby simplifying the manufacturing process of the slot antenna 10 , the occupied space of the slot antenna 10 is reduced, and the production cost of the slot antenna 10 is reduced.
  • the antenna system provided by the embodiments of the present application also has the characteristics of being conformal to the touch panel and the characteristics of concealment, and can greatly expand the design space of the antenna, avoid leakage of the antenna and limit the shape of the electronic device, thereby making the electronic device
  • the shape design is more flexible.
  • the following takes as an example the integration of a single broadband slot antenna 10 on the ITO touch layer of the touch display screen (that is, it is set as a wide-slot slot antenna to increase the bandwidth of the slot antenna 10 ) to illustrate the operation of the broadband slot antenna 10 provided in the embodiment of the present application.
  • Antenna performance :
  • FIG. 8 is a graph of the reflection coefficient (also referred to as the S parameter) of the broadband slot antenna 10 provided in this embodiment with -10 dB as the standard. It can be seen from FIG. 8 that the reflection coefficient of the broadband slot antenna 10 is relatively small, so it has good transmission performance.
  • FIG. 9 is a diagram of the transmission efficiency of the broadband slot antenna 10 provided by this embodiment. It can be seen from FIG. 9 that the impedance bandwidth of the broadband slot antenna 10 integrated on the ITO touch layer provided by the embodiment of the present application can cover 57.3- 66.7GHz frequency band, and the transmission efficiency of the broadband slot antenna 10 based on the ITO touch layer within the impedance bandwidth meets the signal transmission requirements.
  • FIG. 10 is a radiation pattern of the broadband slot antenna 10 provided in this embodiment.
  • the antenna surface is covered with a glass cover.
  • the glass cover due to the glass cover The existence of the antenna will cause obvious surface waves, so the radiation pattern of the antenna has obvious fluctuations.
  • the broadband slot antenna 10 based on the ITO touch layer provided in the embodiment of the present application has good antenna radiation performance.
  • Embodiments of the present application further provide an electronic device, where the electronic device includes the touch panel with integrated antenna provided by the embodiments of the present application.
  • the electronic device in this embodiment of the present application may be a mobile electronic device or a non-mobile electronic device.
  • the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (personal digital assistant).
  • assistant, PDA personal digital assistant
  • the non-mobile electronic device may be a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • the touch layer is a transparent conductive film (eg, an ITO touch layer).
  • the light-transmitting ITO touch layer can be disposed on the display layer to avoid blocking the display content of the display layer.
  • the broadband slot antenna system integrated in the ITO touch layer has light transmittance, so that it can be arranged on the display screen without blocking the display content of the display screen, Therefore, it can be applied to smart wearable devices such as smart glasses, virtual reality (Virtual Reality, VR) devices, and augmented reality (Augmented Reality, AR) devices.
  • smart wearable devices such as smart glasses, virtual reality (Virtual Reality, VR) devices, and augmented reality (Augmented Reality, AR) devices.
  • the broadband slot antenna system integrated in the ITO touch layer provided in the embodiment of the present application can also be used on the glass or display screen of mobile terminal devices such as the Internet of Things, smart homes, automobiles, and mobile phones.

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Abstract

一种集成天线的触控面板和电子设备，属于通信技术领域。其中，集成天线的触控面板包括：触控层（1），所述触控层（1）由导电材料制成，所述触控层（1）上开设有第一通孔（12）和第一缝隙（11），所述第一缝隙（11）第一端贯穿所述触控层（1）的边缘，所述第一缝隙（11）的第二端与所述第一通孔（12）连通；第一天线馈线（2），所述第一天线馈线（2）与所述第一缝隙（11）的相对两侧壁之间具有间隙，且所述第一天线馈线（2）的第一端经所述第一缝隙（11）延伸至所述第一通孔（12）内，所述第一天线馈线（2）的第二端用于与馈源连接。

Description

集成天线的触控面板和电子设备
相关申请的交叉引用
本申请主张在2020年10月30日在中国提交的中国专利申请No.202011197975.X的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种集成天线的触控面板和电子设备。
背景技术
随着无线通信技术的应用越来越广泛，对于电子设备上的天线的要求越来越高，同一电子设备上安装的天线数量也越来越多。
在电子设备向大屏幕的发展趋势下，电子设备上用于安装天线的空间越来越小，在相关技术中，为了便于天线集成于电子设备的显示屏上，可以在电视机等不支持触控功能的电子设备的显示屏上设置由透明导电材料制成的毫米波天线，且为了防止金属层降低天线性能，该显示屏上不能够设置触控层。
由此可知，相关技术中的毫米波天线仅能够设置于无触控功能的显示屏上。
发明内容
本申请实施例的目的是提供一种集成天线的触控面板和电子设备，能够解决相关技术中的毫米波天线存在的仅能够设置于无触控功能的显示屏上的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提供了一种集成天线的触控面板，包括：
触控层，所述触控层上开设有第一通孔和第一缝隙，所述第一缝隙的第一端贯穿所述触控层的边缘，所述第一缝隙的第二端与所述第一通孔连通；
第一天线馈线，所述第一天线馈线与所述第一缝隙的相对两侧壁之间具有间隙，且所述第一天线馈线的第一端经所述第一缝隙延伸至所述第一通孔内，所述第一天线馈线的第二端用于与馈源连接。
第二方面，本申请实施例提供了一种电子设备，包括第一方面所述的集成天线的触控面板。
在本申请实施例中，通过在触控层上开设第一通孔和第一缝隙，并使天线馈线沿第一缝隙延伸入第一通孔内部，以构成缝隙天线，从而实现在触控面板上集成缝隙天线，避免了增设缝隙天线的金属载体，能够减小缝隙天线的占用空间。
附图说明
图1是本申请实施例提供的一种集成天线的触控面板的结构图之一；
图2是本申请实施例提供的一种集成天线的触控面板的拆分图；
图3是本申请实施例提供的一种集成天线的触控面板的结构图之二；
图4a是本申请实施例提供的一种集成天线的触控面板的第一天线馈线的结构图之一；
图4b是本申请实施例提供的一种集成天线的触控面板的第一天线馈线的结构图之二；
图4c是本申请实施例提供的一种集成天线的触控面板的第一天线馈线的结构图之三；
图5是本申请实施例提供的集成天线的触控面板中液晶高分子聚合物(Liquid Crystal Polymer，LCP)馈线的拆分图；
图6是本申请实施例提供的集成天线的触控面板在电子设备上的安装示意图；
图7是包括本申请实施例提供的集成天线的触控面板的显示屏的结构图；
图8是本申请实施例提供的集成天线的反射系数曲线图；
图9是本申请实施例提供的集成天线的传输效率曲线图；
图10是本申请实施例提供的集成天线的辐射方向图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的集成天线的触控面板和电子设备进行详细地说明。
请参阅图1，是本申请实施例提供的一种集成天线的触控面板的结构图，如图1所示，该集成天线的触控面板包括：触控层1和第一天线馈线2。
其中，触控层1由导电材料制成，所述触控层1上开设有第一缝隙11和第一通孔12，所述第一缝隙11的第一端贯穿所述触控层1的边缘，所述第一缝隙11的第二端与所述第一通孔12连通；
另外，所述第一天线馈线2与所述第一缝隙11的相对两侧壁之间具有间隙，且所述第一天线馈线2的第一端经所述第一缝隙11延伸至所述第一通孔12内，所述第一天线馈线2的第二端用于与馈源连接。
在具体实施中，第一通孔12和第一缝隙11可以开设于触控层1的非敏感区域，该非敏感区域可以理解为被触控的频率较小的区域，例如：若该触控面板集成于手机上的触控显示屏内(触控显示屏包括显示层和叠设于显示层上的触控层)的情况下，该非敏感区域可以是靠近手机的左侧边或者右侧边的触控区域。在实际应用中，第一通孔12的长度与第一通孔12的宽度可 以接近，且具体可以是辐射波长的1/2长度，该辐射波长的1/2的尺寸较小，往往仅有1-2mm，在触控面板上开设1-2mm的第一通孔，对触控层的灵敏度的干扰较小。
需要说明的是，第一通孔12的形状并不限定为如图1所示的正方形结构，其还可以是圆形、椭圆形、菱形等长度和宽度接近的任意形状，在此不作具体限定。另外，所述第一天线馈线2的对称轴分别与所述第一通孔12的对称轴，以及第一缝隙11的对称轴重叠，具体可以是：第一缝隙11与第一通孔12连接的位置位于第一通孔12的对称轴上，以使沿所述第一缝隙11延伸入第一通孔12内的第一天线馈线2馈入第一通孔12内的位置位于第一通孔12的对称轴上或者位于第一通孔12的中心位置处。
另外，第一天线馈线2与触控层1可以位于同一平面内，或者，该第一天线馈线2还可以比触控层1略厚，例如：如图2所示，在触控层1上由下至上依次叠设有光学胶层20和盖板玻璃30的情况下，可以使第一天线馈线2的厚度等于光学胶层20和触控层1的厚度之和。
其中，光学胶层20就可以是光学胶带(Optically Clear Adhesive，OCA)层或者光学透明树脂(Optical Clear Resin，OCR)层。且所述触控层可以是为透明导电膜，例如：薄膜即铟锡氧化物半导体(Indium Tin Oxide，ITO)透明导电膜。
本实施方式中，可以在显示层40上集成透明的触控层1，并通过在触控层1上开设第一通孔12和第一缝隙11，并在该第一缝隙11内设置第一天线馈线2的方式形成缝隙天线10，其中，触控层1构成缝隙天线10的参考地，从而使得能够在触控显示屏上集成缝隙天线，且不遮挡显示屏的显示内容。且无需增设缝隙天线的载体，从而简化了集成天线的触控面板的制造工艺，并降低成本，可用于实现天线功能的同时不干扰触控功能。
在相关技术中，毫米波天线的设计方案主要是：采用封装天线(Antenna in package，AIP)的技术与工艺，把毫米波的阵列天线、射频集成电路(Radiao Frquency Intergarted Circuit，RFIC)以及集成电源管理电路(Power Management  Intergarted Circuit，PMIC)集成在一个模块内。在装配于手机上使，便将此模块置入手机内部，这样会占用其他天线的安装空间，导致其他天线的性能的下降。
本申请实施例中，上述天线功能可以是毫米波天线，当然，其还可以是其他类型的天线，且在具体实施中，还可以改变缝隙天线10的缝隙宽度等，以改变天线的带宽或者频段等，为便于说明，以下仅以所述缝隙天线10为毫米波天线为例进行举例说明，在此并不限定本申请实施例提供的触控面板上仅能够集成毫米波天线。
进一步的，还可以在触控层1上开设多个阵列分布的第一缝隙11和第一通孔12，并分别在各个第一缝隙11内布置天线馈线，以形成毫米波天线阵列，这样，无需单独设置毫米波天线模组(如AIP模组)，有效节省了毫米波天线的安装空间。
在实际应用中，鉴于触控层1和光学胶层20的厚度均较薄，使得第一天线馈线2的厚度也比较薄，从而限制了第一天线馈线2的带宽覆盖，为了解决该问题，可以采用以下实施方案：
如图1所示，所述第一天线馈线2包括：
端部21，端部21为所述第一天线馈线2的第一端，且端部21位于第一通孔12内；
馈电部22，馈电部22的第一端连接于端部21，馈电部22的第二端延伸至第一缝隙11的第一端，并用于与所述馈源连接；其中，馈电部22的相对两侧分别与第一缝隙11的侧壁之间具有间隙，且馈电部22与触控层1位于同一平面，以与触控层1的位于第一缝隙11相对两侧的部分构成共面波导结构50。
在具体实施中，可以将第一通孔12设置为长宽比接近的形状(例如：正方形、圆形等中心对称结构)，以与第一天线馈线2构成宽缝天线，并利用宽缝天线本身的宽带特性来有效的扩展天线的带宽。
本实施方式中，使宽缝天线利用共面波导结构进行馈电。其中，宽缝天 线的长度和宽度的尺寸相近，使得缝隙的尺寸较大，其提供了更多的电流路径，因此其能实现较宽的带宽，这样，利用共面波导馈电激励起宽缝天线辐射，能够有效的扩展天线的带宽，使毫米波宽缝天线能够覆盖57.3-66.7GHz频段。
进一步的，如图3所示，在第一通孔12包括垂直的第一对称轴和第二对称轴的情况下，触控层1上还开设有第四缝隙13，所述集成天线的触控面板还包括：第二天线馈线3，第二天线馈线3与第一天线馈线2具有相同的结构；
第四缝隙13的第一端贯穿触控层1的边缘，第四缝隙13的第二端与第一通孔12连通，且第一缝隙11沿所述第一对称轴延伸，第四缝隙13沿所述第二对称轴延伸。
上述第二天线馈线3与第一天线馈线2具有相同的结构，可以理解为：第二天线馈线3与第一天线馈线2的外形结构相同；且与第一天线馈线2的第一端沿第一缝隙11延伸入第一通孔12内，并与第一缝隙11的相对两侧边之间具有间隙的位置结构相同的：第二天线馈线3的第一端沿第四缝隙13延伸入第一通孔12内，并与第四缝隙13的相对两侧边之间具有间隙。
另外，与第一天线馈线2的馈电部22为共面波导线相同的，该第二天线馈线3的馈电部也是共面波导线。
进一步的，第一通孔12的平面结构可以是正方形或者圆形等中心对称图像，则第一天线馈线2和第一缝隙11沿第一通孔12的中心点旋转90度后分别与第二天线馈线3和第四缝隙13重叠。
本实施方式中，宽缝天线的开槽形状优选为正方形、圆形等对称形状，从而很容易通过相互垂直的天线馈线口去激励天线，从而可以实现天线的双极化性能。
可选的，如图1所示，所述端部21沿所述第一缝隙11的宽度方向的宽度为第一尺寸，所述馈电部22沿所述第一缝隙11的宽度方向的宽度为第二尺寸，所述第一尺寸大于所述第二尺寸。
其中，所述第一尺寸大于所述第二尺寸表示第一天线馈线2的第一端呈“T”型结构，在具体实施中，上述第一天线馈线2的端部21的形状并不限定为如图1所示的矩形，其还可以是如图4a所示的圆形、如图4b所示的矩形或者如图4c所示的等腰三角形等等，在此并不穷举。
本实施方式中，其可以通过时端部21的宽度大于馈电部22的宽度，以实现更好的阻抗匹配效果。
作为一种可选的实施方式，如图5所示，触控面板还包括：连接于所述馈电部22的第二端与所述馈源之间的馈线3，LCP馈线3包括：依次叠设的第一金属层33、第一液晶高分子聚合物(Liquid Crystal Polymer，LCP)基板31、第二金属层34、第二LCP基板32和第三金属层35。
LCP馈线3中各层之间的具体结构为：第三金属层35与触控层1电连接；第一金属层33上开设有第二缝隙，以将第一金属层33分割为具有第一条形孔331的第一金属板332和嵌设于第一条形孔331内的第一金属带333，第一金属带333与第一条形孔331的侧壁之间具有间隙，所述第二缝隙的开口端贯穿第一金属层33的边缘，且朝向馈电部22的第一端；
第二金属层34上开设有第三缝隙，以将第二金属层34分割为具有第二条形孔341的第二金属板342和嵌设于第二条形孔341内的第二金属带343，第二金属带343与第二条形孔341的侧壁之间具有间隙，所述第三缝隙的开口端贯穿第二金属层34的边缘，且朝向馈源；
第一LCP基板31上贯穿设置有金属过孔311，金属过孔311电连接第一金属带333和第二金属带343。
其中，LCP板具有高频损耗低，稳定性好，易弯折等性能，便于在该LCP板上承载天线馈线，且能够降低天线馈线的高频损耗。在具体实施中，可以将第一金属带333通过焊接的方式与第一天线馈线2的馈电部22连接。
在工作中，毫米波射频信号通过射频通路进入到第二金属带343中，该第二金属带343呈带状线结构，为一种全封闭的馈电结构，这样，能够减小该第二金属带343上传输的电磁波的泄露，从而避免了该第二金属带343上 传输的电磁波对电子设备中其他元器件的电磁干扰。
另外，毫米波射频信号在传输至LCP馈线3的靠近第一天线馈线2的位置处时，第二金属带343通过第一LCP基板31上的金属过孔311变换到上层共面波导(Co-Planar Waveguide，CPW)(即第一金属带333)上传输从而实现LCP馈线3的参考地与第一天线馈线2(即ITO贴片天线)的参考地良好共地。
本实施例中，LCP馈线3采用的是基于带状线(strip line)转共面波导的LCP馈线结构给天线馈电，在其他实施方式中，还可以采用同轴馈电，微带线馈电等馈电方式的LCP馈电结构给天线馈电，在此不作具体限定。
在实际应用中，可以对LCP馈线3做阻抗控制，且尽可能缩短LCP馈线3的长度，以进一步减少射频信号的路径损耗。
进一步的，所述馈源位于射频集成电路(Radio Frequency Integrated Circuit，RFIC)中，且所述射频集成电路集成于与所述第一天线馈线2连接的LCP板上。
在具体实施中，上述LCP板可以是LCP馈线3所在的LCP板4，即LCP板4与LCP馈线3为一体结构，且具体可以通过将射频集成电路焊接于LCP馈线3上的方式实现将射频集成电路集成于LCP板4上。
更进一步的，如图6所示，所述LCP板4上还承载有触控芯片61，且所述集成天线的触控面板还包括与所述LCP板4连接的连接器62，所述触控芯片61与所述连接器62连接。
在具体实施中，上述LCP板4与连接器62之间可以通过柔性电路板(Flexible Printed Circuit，FPC)63连接。
另外，上述连接器62可以是触控层1所携带的板对板(Board-to-board，BTB)连接器。
这样，可以复用触控层1的BTB连接器实现天线与电子设备内部电路的连接，无需为天线独立设置一个连接器，能够减小连接器的占用空间。
在具体实施中，本申请实施例提供的集成天线的触控面板可以位于触控 显示屏内，例如：如图7所示的有源矩阵有机发光二极体或主动矩阵有机发光二极体(Active-matrix organic light-emitting diode，AMOLED)全面屏模组，该全面屏模组可以包括由上至下依次叠设的：盖板玻璃71、第一光学胶层72、偏光片73、触控层1、第二光学胶层74、上玻璃层75、下玻璃层76以及泡棉层77。
这本实施方式中，通过在触控层1上开设第一通孔12和第一缝隙11，并对应设置第一天线馈线2，以在触控层1上集成缝隙天线10。
在具体实施中，如图6所示，上述全面屏模组通过与LCP板4连接的柔性电路板63与连接器62连接，以通过该连接器62装配于电子设备60。其中，柔性电路板63与LCP馈线3所在的LCP板4连接，且可以将射频集成电路、显示芯片64以及触控芯片61分别集成于该LCP板4上，从而复用显示屏的LCP板4和连接器62实现缝隙天线10的馈电，以及实现射频集成电路的设置，无需为缝隙天线10单独设置LCP板和连接器，有效的节省了空间。
综上可知，本申请实施例提供的集成天线的触控面板具有占用空间小、且复用触控层作为缝隙天线10的走线层，并将射频集成电路承载于触控面板本身具有的LCP板上，且能够复用与该LCP板连接的连接器以装配于电子设备上，从而无须为缝隙天线10单独设置走线层、LCP板以及连接器，从而具有简化了缝隙天线10的制造工艺、减小了缝隙天线10的占用空间，且降低了缝隙天线10的生产成本的有益效果。
另外，本申请实施例提供的天线系统还具有与触控面板共形的特性和隐蔽的特性，且能够大大拓展天线的设计空间，能够避免天线外漏而限制电子设备的外形，从而使得电子设备的外形设计更加灵活。
下面以在触控显示屏的ITO触控层上集成单个宽带缝隙天线10(即设置为宽缝缝隙天线以增加缝隙天线10的带宽)为例，说明本申请实施例提供的宽带缝隙天线10的天线性能：
请参阅图8，为本实施例提供的宽带缝隙天线10以-10dB为标准的反射 系数(也可以称之为S参数)的曲线图，由图8可知，该宽带缝隙天线10的反射系数较小，从而具有良好的传输性能。
请参阅图9，为本实施例提供的宽带缝隙天线10的传输效率图，由图9可知，本申请实施例提供的在ITO触控层上集成的宽带缝隙天线10的阻抗带宽能够覆盖57.3-66.7GHz频段，且阻抗带宽内的基于ITO触控层的宽带缝隙天线10的传输效率满足信号传输要求。
请参阅图10，为本实施例提供的宽带缝隙天线10的辐射方向图，本申请实施例提供的集成天线的触控面板中天线表面覆盖有玻璃盖板，由图9可知，由于玻璃盖板的存在会引起较明显的表面波，故天线的辐射方向图具有比较明显的起伏。
由图8至图10可知，本申请实施例提供的基于ITO触控层的宽带缝隙天线10具有良好的天线辐射性能。
本申请实施例还提供一种电子设备，该电子设备包括本申请实施例提供的集成天线的触控面板。
本申请实施例中的电子设备可以是移动电子设备，也可以为非移动电子设备。示例性的，移动电子设备可以为手机、平板电脑、笔记本电脑、掌上电脑、车载电子设备、可穿戴设备、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本或者个人数字助理(personal digital assistant，PDA)等，非移动电子设备可以为个人计算机(personal computer，PC)、电视机(television，TV)、柜员机或者自助机等，本申请实施例不作具体限定。
在具体实施中，在所述电子设备的显示屏集成有所述集成天线的触控面板的情况下，所述触控层为透明导电膜(例如：ITO触控层)。
这样，可以将具有透光性的ITO触控层叠设于显示层上，避免遮挡显示层的显示内容。
本实施方式中，鉴于ITO触控层为透明导电层，使得集成于ITO触控层的宽带缝隙天线系统具备透光性，从而能够设置于显示屏上，且不会遮挡显示屏的显示内容，因而可以应用在智能眼镜、虚拟现实(Virtual Reality，VR) 设备、增强现实(Augmented Reality，AR)设备等智能穿戴设备上。
当然，在具体实施中，本申请实施例提供的集成于ITO触控层的宽带缝隙天线系统也可用于物联网、智能家居、汽车、手机等移动终端设备的玻璃或者显示屏幕上面。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (10)

  1. 一种集成天线的触控面板，包括：
    触控层，所述触控层上开设有第一通孔和第一缝隙，所述第一缝隙的第一端贯穿所述触控层的边缘，所述第一缝隙的第二端与所述第一通孔连通；
    第一天线馈线，所述第一天线馈线与所述第一缝隙的相对两侧壁之间具有间隙，且所述第一天线馈线的第一端经所述第一缝隙延伸至所述第一通孔内，所述第一天线馈线的第二端用于与馈源连接。
  2. 根据权利要求1所述的触控面板，其中，所述第一天线馈线包括：
    端部，所述端部位于所述第一天线馈线的第一端，且位于所述第一通孔内；
    馈电部，所述馈电部的第一端连接于所述端部，所述馈电部的第二端延伸至所述第一缝隙的第一端，并用于与所述馈源连接；其中，所述馈电部与所述第一缝隙之间具有间隙，且所述馈电部与所述触控层位于同一平面，以构成共面波导结构。
  3. 根据权利要求2所述的触控面板，其中，还包括：连接于所述馈电部的第二端与所述馈源之间的LCP馈线，所述LCP馈线包括：依次叠设的第一金属层、第一液晶高分子聚合物LCP基板、第二金属层、第二LCP基板和第三金属层；
    所述第三金属层与所述触控层电连接；
    所述第一金属层上开设有第二缝隙，以将所述第一金属层分割为具有第一条形孔的第一金属板和嵌设于所述第一条形孔内的第一金属带，所述第一金属带与所述第一条形孔的侧壁之间具有间隙，所述第二缝隙的开口端贯穿所述第一金属层的边缘，且朝向所述馈电部；
    所述第二金属层上开设有第三缝隙，以将所述第二金属层分割为具有第二条形孔的第二金属板和嵌设于所述第二条形孔内的第二金属带，所述第二金属带与所述第二条形孔的侧壁之间具有间隙，所述第三缝隙的开口端贯穿所述第二金属层的边缘，且朝向所述馈源；
    所述第一LCP基板上贯穿设置有金属过孔，所述金属过孔电连接所述第 一金属带和所述第二金属带。
  4. 根据权利要求2所述的触控面板，其中，所述端部沿所述第一缝隙的宽度方向的宽度为第一尺寸，所述馈电部沿所述第一缝隙的宽度方向的宽度为第二尺寸，所述第一尺寸大于所述第二尺寸。
  5. 根据权利要求2所述的触控面板，其中，所述第一天线馈线的对称轴与所述第一缝隙的对称轴、以及所述第一通孔的对称轴重叠。
  6. 根据权利要求1所述的触控面板，其中，所述馈源位于射频集成电路中，且所述射频集成电路集成于与所述第一天线馈线连接的LCP板上。
  7. 根据权利要求6所述的触控面板，其中，所述LCP板上还承载有触控芯片，且所述集成天线的触控面板还包括与所述LCP板连接的连接器，所述触控芯片与所述连接器连接。
  8. 根据权利要求1所述的触控面板，其中，所述触控层为透明导电膜。
  9. 根据权利要求1-8中任一项所述的触控面板，其中，所述第一通孔包括垂直的第一对称轴和第二对称轴，所述触控层上还开设有第四缝隙，所述集成天线的触控面板还包括：第二天线馈线，所述第二天线馈线与所述第一天线馈线具有相同的结构；
    所述第四缝隙的第一端贯穿所述触控层的边缘，所述第四缝隙的第二端与所述第一通孔连通，且所述第一缝隙沿所述第一对称轴延伸，所述第四缝隙沿所述第二对称轴延伸。
  10. 一种电子设备，包括如权利要求1-9中任一项所述的集成天线的触控面板。
PCT/CN2021/127283 2020-10-30 2021-10-29 集成天线的触控面板和电子设备 WO2022089567A1 (zh)

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