WO2018149058A1 - Fingerprint device, and terminal apparatus - Google Patents
Fingerprint device, and terminal apparatus Download PDFInfo
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- WO2018149058A1 WO2018149058A1 PCT/CN2017/087590 CN2017087590W WO2018149058A1 WO 2018149058 A1 WO2018149058 A1 WO 2018149058A1 CN 2017087590 W CN2017087590 W CN 2017087590W WO 2018149058 A1 WO2018149058 A1 WO 2018149058A1
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- fingerprint
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- antenna radiator
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
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- the present application relates to the field of electronic technologies, and in particular, to a fingerprint device and a terminal device.
- a fingerprint recognition function is generally provided.
- the fingerprint device that implements the fingerprint recognition function is disposed at the start home key position or below the back camera. These positions usually coincide with the antenna radiator position of the antenna.
- the home key position usually coincides with the position of the far-field antenna of the terminal device, and the position below the back camera is usually the NFC (Near Field Communication) antenna.
- the position coincides.
- the antenna radiators of the fingerprint device and the antenna are usually separately disposed, occupying a large thickness in the overlapping positions of the two, and the installation of the two separately is not conducive to improving the integration degree of the device, and is internal to the terminal device. The space is occupied more.
- the embodiment of the present application provides a fingerprint device and a terminal device, which can multiplex the fingerprint device with the antenna radiator of the antenna to improve the integration degree of the device, thereby reducing the occupation of the internal space of the terminal device, and facilitating the small terminal device.
- a fingerprint device comprising: a fingerprint sensor portion and a flexible circuit board portion, wherein the fingerprint sensor portion is connected to the main board of the terminal through the flexible circuit board portion; the fingerprint sensor portion and the flexible circuit board portion are covered with low loss of communication
- the metal conductor forms an antenna radiator; the fingerprint sensor portion includes a touch circuit, and the antenna radiator corresponds to the touch surface of the touch circuit; the flexible circuit board portion is provided with a conductive reinforcing plate, and the conductive reinforcing plate is electrically connected to the antenna radiator, and is electrically conductive.
- the stiffener is used as the feed portion of the antenna radiator.
- the solution provided by the present application forms an antenna radiator by covering a low loss metal conductor connected in a portion of the fingerprint sensor portion and the flexible circuit board portion, and a conductive reinforcing plate is disposed on the flexible circuit board portion as an antenna radiator.
- the feeding portion, and the antenna radiator is hollowed out at the touch surface of the touch circuit corresponding to the fingerprint sensor portion, thereby not affecting the touch function of the fingerprint device, thereby realizing effective multiplexing of the fingerprint device and the antenna radiator of the antenna,
- the space occupied by the fingerprint device is effectively utilized, the integration degree of the device is improved, and the occupation of the internal space of the terminal device is reduced, which is advantageous for miniaturization, thinning and thinning of the terminal device.
- the fingerprint sensor portion includes a touch circuit and a support plate located below the touch circuit, wherein the antenna radiator serves as a support plate for the touch circuit.
- the support plate under the touch circuit is multiplexed into an antenna radiator, so that the antenna radiator and the touch circuit share the support plate, which can effectively reduce the thickness of the fingerprint device and the antenna radiation combined portion.
- the flexible circuit board portion is plated with a low loss metal conductor.
- the feed portion includes a feed point and/or a location.
- a PIFA (Planar Inverted F Antenna) antenna has a feed point and a location
- a monopole antenna has only one feed point
- a PIFA antenna plus a parasitic antenna has two feed points and one location.
- the fingerprint device further includes a fingerprint chip attached to the flexible circuit board portion.
- a shielding cover is disposed outside the fingerprint chip, and the shielding cover is grounded, wherein the shielding cover is electrically connected to the ground through the conductive cloth.
- the fingerprint chip mainly processes the touch signal generated by the fingerprint sensor part in a manner of detection, conversion, etc., and shielding the fingerprint chip through the shield cover to avoid interference of the external signal on the fingerprint chip.
- a terminal device including any of the above fingerprint devices.
- the fingerprint device is disposed in a non-display area of the display panel of the terminal device.
- the main board of the terminal device is provided with a spring foot, and the conductive reinforcing plate is electrically connected with the elastic foot; the elastic foot is used for grounding, or the elastic foot is connected to the main board The RF circuit on it.
- the foot is specifically configured to be coupled to a feed point or location.
- the PIFA antenna two bullets are required, one for connecting the feed point and the other for connecting the foot.
- the monopole antenna only one foot is needed to connect the feed point; for the PIFA antenna Parasitic antennas require three footers to connect two feed points and one location.
- the main board of the terminal device is provided with a positioning bracket, and the conductive reinforcing plate is fixed on the positioning bracket.
- the fingerprint sensor portion is fixed to the main board of the terminal device by bonding or by a support frame.
- FIG. 1 is a schematic structural diagram of a fingerprint device provided by the present application.
- FIG. 2 is a schematic structural view of a cross section of AA' of a fingerprint device provided in FIG. 1 of the present application;
- FIG. 3 is a schematic structural view of a BB' cross section of a fingerprint device provided in FIG. 1 of the present application;
- FIG. 4 is a schematic structural view of a BB' cross section of the fingerprint device shown in FIG. 1 according to another embodiment of the present application;
- FIG. 5 is a schematic structural diagram of a terminal device according to the present application.
- FIG. 6 is a schematic diagram of simulation of return loss of an antenna radiator of a fingerprint device provided by the present application.
- FIG. 7 is a schematic diagram of simulation of antenna efficiency of an antenna radiator of a fingerprint device provided by the present application.
- the antenna radiator provided by the embodiment of the present application may be an antenna radiator of a far-field antenna or a near-field antenna of the terminal device, and the far-field antenna may be a single input single output (SISO) antenna, multiple input multiple output. (Multiple-Input Multiple-Output, MIMO) antenna, Planar Invert F Antenna (PIFA) antenna, near-field antenna may be an NFC antenna, etc., and the solution provided by the embodiments of the present application is not limited to the above antenna. It can be understood that any antenna structure including an antenna radiator should be applicable.
- the terminal device provided by the embodiment of the present application may be a mobile device with a fingerprint detection function, such as a mobile phone or a tablet computer.
- An embodiment of the present application provides a fingerprint device 10, as shown in FIGS. 1, 2, and 3, comprising: a fingerprint sensor portion 11 and a flexible circuit board portion 12, wherein the fingerprint sensor portion 11 is connected to the terminal through the flexible circuit board portion 12.
- the main board; the fingerprint sensor portion 11 and the flexible circuit board portion 12 are covered with the connected low-loss metal conductor 13 to form an antenna radiator;
- the fingerprint sensor portion 11 includes a touch circuit 111, and the antenna radiator corresponds to the hollow surface of the touch surface of the touch circuit 111;
- the circuit board portion 12 is provided with a conductive reinforcing plate 121 electrically connected to the antenna radiator, and the conductive reinforcing plate 121 serves as a feeding portion 14 of the antenna radiator.
- the fingerprint sensor portion 11 can be implemented in the following two manners: Method 1: Referring to FIG. 3, the fingerprint sensor portion 11 includes a touch circuit 111. The touch circuit 111 is wrapped with a low-loss metal conductor 13 except for the touch surface. The antenna radiator corresponds to the hollow at the touch surface of the touch circuit 111. In this scheme, the touch surface of the touch circuit 111 is used to detect a touch operation, and thus needs to be exposed. Or, the second method: as shown in FIG. 4, the fingerprint sensor portion 11 includes a touch circuit 111 and a support plate 112 under the touch circuit, wherein the antenna radiator is used as a support plate of the touch circuit 111, so that the support plate 112 adopts low loss. A metal conductor is formed. In the solution, the support plate under the touch circuit is multiplexed into an antenna radiator, so that the antenna radiator and the touch circuit share the support plate, which can effectively reduce the thickness of the fingerprint device and the antenna radiation combined portion.
- Method 1 Referring to FIG. 3, the fingerprint sensor portion 11 includes a touch
- a low loss metal conductor may be formed on the outside of the flexible circuit board portion 12 by electroplating. As shown in FIG. 2, the outer side of the flexible circuit board portion 12 is plated with a low loss metal conductor 13.
- the solution provided by the present application forms an antenna radiator by covering a low loss metal conductor connected in a portion of the fingerprint sensor portion and the flexible circuit board portion, and a conductive reinforcing plate is disposed on the flexible circuit board portion as an antenna radiator.
- the feeding portion, and the antenna radiator is hollowed out at the touch surface of the touch circuit corresponding to the fingerprint sensor portion, thereby not affecting the touch function of the fingerprint device, thereby realizing effective multiplexing of the fingerprint device and the antenna radiator of the antenna,
- the space occupied by the fingerprint device is effectively utilized, the integration degree of the device is improved, and the occupation of the internal space of the terminal device is reduced, which is advantageous for miniaturization, thinning and thinning of the terminal device.
- the feed portion 14 includes feed points and/or locations.
- a PIFA (Planar Inverted F Antenna) antenna has a feed point and a location
- a monopole antenna has only one feed point
- a PIFA antenna plus a parasitic antenna has two feed points and one location.
- the fingerprint device further includes a fingerprint chip attached to the flexible circuit board portion 12. 15.
- a shield cover 16 is disposed outside the fingerprint chip, and the shield cover 16 is grounded, wherein the shield cover is electrically connected to the ground through the conductive cloth.
- the fingerprint chip mainly processes the touch signal generated by the fingerprint sensor part in a manner of detection, conversion, etc., and shielding the fingerprint chip through the shield cover to avoid interference of the external signal on the fingerprint chip.
- An embodiment of the present application further provides a terminal device, including any of the above fingerprint devices.
- the fingerprint device 10 is disposed in the non-display area 20 of the display panel of the terminal device.
- An example is where the fingerprint device 10 is placed at the starting home key location of the non-display area.
- the main board of the terminal device is provided with a spring foot, and the conductive reinforcing plate is electrically connected with the elastic foot, the elastic foot is used for grounding, or the elastic foot is connected to the radio frequency circuit on the main board.
- the foot is specifically configured to be coupled to a feed point or location.
- a feed point or location Exemplarily, for the PIFA antenna, two bullets are required, one for connecting the feed point and the other for connecting the foot.
- the monopole antenna only one foot is needed to connect the feed point; for the PIFA antenna Parasitic antennas require three footers to connect two feed points and one location.
- a positioning bracket is disposed on the main board of the terminal device, and the conductive reinforcing plate is fixed on the positioning bracket.
- the positioning of the bracket is not limited.
- the positioning bracket may be a plurality of positioning posts, which are fixed by being matched with the through holes of the conductive reinforcing plate, or the positioning bracket is a card slot that is shaped to match the outer edge of the conductive reinforcing plate.
- the fingerprint sensor portion is fixed to the main board of the terminal device by bonding or by a support frame.
- the performance of the antenna radiator included in the fingerprint device of the above structure is tested under the 5G (5th-generation, fifth generation mobile communication technology) wireless communication condition, and the test results are shown in FIGS. 6 and 7, wherein
- Figure 6 shows the return loss of the antenna at different frequencies, where the vertical axis is: return loss (in dB), the horizontal axis is: frequency (in GHz);
- Figure 7 shows the antenna of the antenna at different frequencies Efficiency, where the vertical axis is: antenna efficiency (in dB), and the horizontal axis is: frequency (in GHz); where, in the 5G free band 5.150GHz-5.825GHz, the return loss is less than -2.25dB, which corresponds to The antenna efficiency is greater than -5dB, and the antenna efficiency of this structural design meets the requirements.
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Abstract
The present invention relates to the technical field of electronics, and relates to a fingerprint device and terminal apparatus enabling a fingerprint device to also serve as an antenna radiator, thus improving device integration, and accordingly reducing space occupation within a terminal apparatus. The fingerprint device (10) comprises: a fingerprint sensor portion (11) and a flexible circuit board portion (12), wherein the fingerprint sensor portion (11) is connected to a main board of a terminal via the flexible circuit board portion (12). The fingerprint sensor portion (11) and the flexible circuit board portion (12) are covered with a low-loss metal conductor (13) to form an antenna radiator. The fingerprint sensor portion (11) comprises a touch circuit (111), and the antenna radiator has an opening at a location corresponding to a touch surface of the touch circuit (111). A conductive strengthening board (121) is provided on the flexible circuit board portion (12), and electrically connected to the antenna radiator. The conductive strengthening board (121) is used as a power feed portion (14) of the antenna radiator.
Description
本申请涉及电子技术领域,尤其涉及一种指纹器件及终端设备。The present application relates to the field of electronic technologies, and in particular, to a fingerprint device and a terminal device.
在移动终端设备中,通常都设置有指纹识别功能,目前实现指纹识别功能的指纹器件都设置于起始home键位置或者背部摄像头下方。而上述这些位置通常与天线的天线辐射体位置重合,例如:home键位置通常与终端设备的远场天线的位置重合,背部摄像头下方的位置通常与NFC(Near Field Communication,近距离无线通信)天线的位置重合。而现有技术中,指纹器件与天线的天线辐射体通常是单独设置的,在两者重合位置占用了较大的厚度,此外两者分别安装也不利于提高器件的集成度,对终端设备内部空间的占用较大。In the mobile terminal device, a fingerprint recognition function is generally provided. Currently, the fingerprint device that implements the fingerprint recognition function is disposed at the start home key position or below the back camera. These positions usually coincide with the antenna radiator position of the antenna. For example, the home key position usually coincides with the position of the far-field antenna of the terminal device, and the position below the back camera is usually the NFC (Near Field Communication) antenna. The position coincides. In the prior art, the antenna radiators of the fingerprint device and the antenna are usually separately disposed, occupying a large thickness in the overlapping positions of the two, and the installation of the two separately is not conducive to improving the integration degree of the device, and is internal to the terminal device. The space is occupied more.
发明内容Summary of the invention
本申请的实施例提供一种指纹器件及终端设备,能够将指纹器件与天线的天线辐射体复用,以提高器件的集成度,进而减小对终端设备内部空间的占用,有利于终端设备小型化、轻薄化。The embodiment of the present application provides a fingerprint device and a terminal device, which can multiplex the fingerprint device with the antenna radiator of the antenna to improve the integration degree of the device, thereby reducing the occupation of the internal space of the terminal device, and facilitating the small terminal device. Chemical, thin and light.
为达到上述目的,本申请的实施例采用如下技术方案:To achieve the above objective, the embodiment of the present application adopts the following technical solutions:
第一方面,提供一种指纹器件,包括:指纹传感器部分和柔性电路板部分,其中指纹传感器部分通过柔性电路板部分连接至终端的主板;指纹传感器部分和柔性电路板部分覆盖有连通的低损耗金属导体,形成天线辐射体;指纹传感器部分包括触摸电路,天线辐射体对应触摸电路的触摸面处镂空;柔性电路板部分上设置有导电补强板,导电补强板电连接天线辐射体,导电补强板用作天线辐射体的馈电部分。相对于现有技术,本申请提供的方案通过在指纹传感器部分和柔性电路板部分覆盖连通的低损耗金属导体形成天线辐射体,并在柔性电路板部分上设置导电补强板用作天线辐射体的馈电部分,并且,天线辐射体对应指纹传感器部分的触摸电路的触摸面处镂空,从而并不影响指纹器件的触摸功能,因此实现了将指纹器件与天线的天线辐射体有效的复用,有效利用了指纹器件占用的空间,提高了器件的集成度,进而减小了对终端设备内部空间的占用,有利于终端设备小型化、轻薄化。In a first aspect, a fingerprint device is provided, comprising: a fingerprint sensor portion and a flexible circuit board portion, wherein the fingerprint sensor portion is connected to the main board of the terminal through the flexible circuit board portion; the fingerprint sensor portion and the flexible circuit board portion are covered with low loss of communication The metal conductor forms an antenna radiator; the fingerprint sensor portion includes a touch circuit, and the antenna radiator corresponds to the touch surface of the touch circuit; the flexible circuit board portion is provided with a conductive reinforcing plate, and the conductive reinforcing plate is electrically connected to the antenna radiator, and is electrically conductive. The stiffener is used as the feed portion of the antenna radiator. Compared with the prior art, the solution provided by the present application forms an antenna radiator by covering a low loss metal conductor connected in a portion of the fingerprint sensor portion and the flexible circuit board portion, and a conductive reinforcing plate is disposed on the flexible circuit board portion as an antenna radiator. The feeding portion, and the antenna radiator is hollowed out at the touch surface of the touch circuit corresponding to the fingerprint sensor portion, thereby not affecting the touch function of the fingerprint device, thereby realizing effective multiplexing of the fingerprint device and the antenna radiator of the antenna, The space occupied by the fingerprint device is effectively utilized, the integration degree of the device is improved, and the occupation of the internal space of the terminal device is reduced, which is advantageous for miniaturization, thinning and thinning of the terminal device.
结合第一方面,在第一种可能的实现方式中,指纹传感器部分包括触摸电路和位于所述触摸电路下方的支撑板,其中,所述天线辐射体用作所述触摸电路的支撑板。该方案中将触摸电路下方的支撑板复用为天线辐射体,这样天线辐射体以及触摸电路共用支撑板,可以有效降低指纹器件与天线辐射体重合部分的厚度。In conjunction with the first aspect, in a first possible implementation, the fingerprint sensor portion includes a touch circuit and a support plate located below the touch circuit, wherein the antenna radiator serves as a support plate for the touch circuit. In the solution, the support plate under the touch circuit is multiplexed into an antenna radiator, so that the antenna radiator and the touch circuit share the support plate, which can effectively reduce the thickness of the fingerprint device and the antenna radiation combined portion.
结合第一方面,在第二种可能的实现方式中,柔性电路板部分外侧镀有低损耗金属导体。
In conjunction with the first aspect, in a second possible implementation, the flexible circuit board portion is plated with a low loss metal conductor.
结合第一方面,在第三种可能的实现方式中,馈电部分包括馈点和/或地点。例如:PIFA(Planar Inverted F Antenna,平板倒置F天线)天线具有馈点和地点,单极天线只具有一个馈点,PIFA天线加寄生天线具有两个馈点和一个地点。In conjunction with the first aspect, in a third possible implementation, the feed portion includes a feed point and/or a location. For example, a PIFA (Planar Inverted F Antenna) antenna has a feed point and a location, a monopole antenna has only one feed point, and a PIFA antenna plus a parasitic antenna has two feed points and one location.
结合第一方面,在第四种可能的实现方式中,所述指纹器件还包括贴附于所述柔性电路板部分的指纹芯片。指纹芯片外设置有屏蔽罩,并且所述屏蔽罩接地,其中屏蔽罩与地通过导电布电连接。这里指纹芯片主要对指纹传感器部分生成的触摸信号进行检测、转换等方式的处理,通过屏蔽罩对指纹芯片进行屏蔽可以避免外部信号对指纹芯片的干扰。In conjunction with the first aspect, in a fourth possible implementation, the fingerprint device further includes a fingerprint chip attached to the flexible circuit board portion. A shielding cover is disposed outside the fingerprint chip, and the shielding cover is grounded, wherein the shielding cover is electrically connected to the ground through the conductive cloth. Here, the fingerprint chip mainly processes the touch signal generated by the fingerprint sensor part in a manner of detection, conversion, etc., and shielding the fingerprint chip through the shield cover to avoid interference of the external signal on the fingerprint chip.
第二方面,提供一种终端设备,包括上述任一指纹器件。In a second aspect, a terminal device is provided, including any of the above fingerprint devices.
结合第二方面,在第一种可能的实现方式中,指纹器件设置在终端设备的显示面板的非显示区域。In conjunction with the second aspect, in a first possible implementation, the fingerprint device is disposed in a non-display area of the display panel of the terminal device.
结合第二方面,在第二种可能的实现方式中,所述终端设备的主板上设置有弹脚,导电补强板与弹脚电连接;弹脚用于接地,或者弹脚连接所述主板上的射频电路。结合第一方面,弹脚具体用于与馈点或地点连接。示例性的,针对PIFA天线,则需要设置两个弹脚,一个弹脚连接馈点、另一弹脚连接地点,针对单极天线则只需要设置一个弹脚,连接馈点;针对PIFA天线加寄生天线则需要设置三个弹脚,分别连接两个馈点和一个地点。With reference to the second aspect, in a second possible implementation manner, the main board of the terminal device is provided with a spring foot, and the conductive reinforcing plate is electrically connected with the elastic foot; the elastic foot is used for grounding, or the elastic foot is connected to the main board The RF circuit on it. In combination with the first aspect, the foot is specifically configured to be coupled to a feed point or location. Exemplarily, for the PIFA antenna, two bullets are required, one for connecting the feed point and the other for connecting the foot. For the monopole antenna, only one foot is needed to connect the feed point; for the PIFA antenna Parasitic antennas require three footers to connect two feed points and one location.
结合第二方面,在第三种可能的实现方式中,终端设备的主板上设置有定位支架,导电补强板固定于定位支架上。In combination with the second aspect, in a third possible implementation manner, the main board of the terminal device is provided with a positioning bracket, and the conductive reinforcing plate is fixed on the positioning bracket.
结合第二方面,在第四种可能的实现方式中,指纹传感器部分通过粘接方式或者通过支撑架方式固定于终端设备的主板上。In conjunction with the second aspect, in a fourth possible implementation, the fingerprint sensor portion is fixed to the main board of the terminal device by bonding or by a support frame.
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below.
图1为本申请提供的一种指纹器件的结构示意图;1 is a schematic structural diagram of a fingerprint device provided by the present application;
图2为本申请图1提供的一种指纹器件的AA’截面的结构示意图;2 is a schematic structural view of a cross section of AA' of a fingerprint device provided in FIG. 1 of the present application;
图3为本申请图1提供的一种指纹器件的BB’截面的结构示意图;3 is a schematic structural view of a BB' cross section of a fingerprint device provided in FIG. 1 of the present application;
图4为本申请的另一实施例提供的如图1所示的指纹器件的BB’截面的结构示意图;4 is a schematic structural view of a BB' cross section of the fingerprint device shown in FIG. 1 according to another embodiment of the present application;
图5为本申请提供的一种终端设备的结构示意图;FIG. 5 is a schematic structural diagram of a terminal device according to the present application;
图6为本申请提供的指纹器件的天线辐射体的回波损耗仿真示意图;6 is a schematic diagram of simulation of return loss of an antenna radiator of a fingerprint device provided by the present application;
图7为本申请提供的指纹器件的天线辐射体的天线效率仿真示意图。FIG. 7 is a schematic diagram of simulation of antenna efficiency of an antenna radiator of a fingerprint device provided by the present application.
下面结合附图,对本申请的实施例进行描述。Embodiments of the present application will be described below with reference to the accompanying drawings.
在本申请的实施例中使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本发明。在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。还应当理解,本文中使用的术语“和/或”是指并包含一个或多
个相关联的列出项目的任何或所有可能组合。本文中字符“/”,一般表示前后关联对象是一种“或”的关系。The terms used in the embodiments of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the invention. The singular forms "a", "the" and "the" It should also be understood that the term "and/or" as used herein refers to and includes one or more.
Associated with any or all possible combinations of listed items. The character "/" in this article generally indicates that the contextual object is an "or" relationship.
本申请的实施例提供的天线辐射体可以为终端设备的远场天线或近场天线的天线辐射体,远场天线可以为单输入单输出(single input single output,SISO)天线、多输入多输出(Multiple-Input Multiple-Output,MIMO)天线、平面倒F天线(Planar Invert F Antenna,PIFA)天线,近场天线可以为NFC天线等等,本申请的实施例所提供的方案不限于上述的天线,可以理解的是只要是包含天线辐射体的任意天线结构均应适用。本申请的实施例所提供的终端设备可以为手机、平板电脑等具有指纹检测功能的移动设备。The antenna radiator provided by the embodiment of the present application may be an antenna radiator of a far-field antenna or a near-field antenna of the terminal device, and the far-field antenna may be a single input single output (SISO) antenna, multiple input multiple output. (Multiple-Input Multiple-Output, MIMO) antenna, Planar Invert F Antenna (PIFA) antenna, near-field antenna may be an NFC antenna, etc., and the solution provided by the embodiments of the present application is not limited to the above antenna. It can be understood that any antenna structure including an antenna radiator should be applicable. The terminal device provided by the embodiment of the present application may be a mobile device with a fingerprint detection function, such as a mobile phone or a tablet computer.
本申请的实施例提供一种指纹器件10,参照图1、2、3所示,包括:指纹传感器部分11和柔性电路板部分12,其中指纹传感器部分11通过柔性电路板部分12连接至终端的主板;指纹传感器部分11和柔性电路板部分12覆盖有连通的低损耗金属导体13,形成天线辐射体;指纹传感器部分11包括触摸电路111,天线辐射体对应触摸电路111的触摸面处镂空;柔性电路板部分12上设置有导电补强板121,导电补强板121电连接天线辐射体,导电补强板121用作天线辐射体的馈电部分14。An embodiment of the present application provides a fingerprint device 10, as shown in FIGS. 1, 2, and 3, comprising: a fingerprint sensor portion 11 and a flexible circuit board portion 12, wherein the fingerprint sensor portion 11 is connected to the terminal through the flexible circuit board portion 12. The main board; the fingerprint sensor portion 11 and the flexible circuit board portion 12 are covered with the connected low-loss metal conductor 13 to form an antenna radiator; the fingerprint sensor portion 11 includes a touch circuit 111, and the antenna radiator corresponds to the hollow surface of the touch surface of the touch circuit 111; The circuit board portion 12 is provided with a conductive reinforcing plate 121 electrically connected to the antenna radiator, and the conductive reinforcing plate 121 serves as a feeding portion 14 of the antenna radiator.
其中,指纹传感器部分11的实现方式可以采用如下两种方式:方式一:参照图3所示,指纹传感器部分11包括触摸电路111,触摸电路111除触摸面均包裹有低损耗金属导体13,即天线辐射体对应触摸电路111的触摸面处镂空。该方案中,触摸电路111的触摸面用于检测触摸操作,因此需要露出。或者,方式二:如图4所示,指纹传感器部分11包括触摸电路111和位于触摸电路下方的支撑板112,其中,天线辐射体用作触摸电路111的支撑板,这样支撑板112采用低损耗金属导体形成。该方案中将触摸电路下方的支撑板复用为天线辐射体,这样天线辐射体以及触摸电路共用支撑板,可以有效降低指纹器件与天线辐射体重合部分的厚度。The fingerprint sensor portion 11 can be implemented in the following two manners: Method 1: Referring to FIG. 3, the fingerprint sensor portion 11 includes a touch circuit 111. The touch circuit 111 is wrapped with a low-loss metal conductor 13 except for the touch surface. The antenna radiator corresponds to the hollow at the touch surface of the touch circuit 111. In this scheme, the touch surface of the touch circuit 111 is used to detect a touch operation, and thus needs to be exposed. Or, the second method: as shown in FIG. 4, the fingerprint sensor portion 11 includes a touch circuit 111 and a support plate 112 under the touch circuit, wherein the antenna radiator is used as a support plate of the touch circuit 111, so that the support plate 112 adopts low loss. A metal conductor is formed. In the solution, the support plate under the touch circuit is multiplexed into an antenna radiator, so that the antenna radiator and the touch circuit share the support plate, which can effectively reduce the thickness of the fingerprint device and the antenna radiation combined portion.
提供一种示例,低损耗金属导体可以采用电镀方式形成于柔性电路板部分12外侧,如图2所示,柔性电路板部分12外侧镀有低损耗金属导体13。To provide an example, a low loss metal conductor may be formed on the outside of the flexible circuit board portion 12 by electroplating. As shown in FIG. 2, the outer side of the flexible circuit board portion 12 is plated with a low loss metal conductor 13.
相对于现有技术,本申请提供的方案通过在指纹传感器部分和柔性电路板部分覆盖连通的低损耗金属导体形成天线辐射体,并在柔性电路板部分上设置导电补强板用作天线辐射体的馈电部分,并且,天线辐射体对应指纹传感器部分的触摸电路的触摸面处镂空,从而并不影响指纹器件的触摸功能,因此实现了将指纹器件与天线的天线辐射体有效的复用,有效利用了指纹器件占用的空间,提高了器件的集成度,进而减小了对终端设备内部空间的占用,有利于终端设备小型化、轻薄化。Compared with the prior art, the solution provided by the present application forms an antenna radiator by covering a low loss metal conductor connected in a portion of the fingerprint sensor portion and the flexible circuit board portion, and a conductive reinforcing plate is disposed on the flexible circuit board portion as an antenna radiator. The feeding portion, and the antenna radiator is hollowed out at the touch surface of the touch circuit corresponding to the fingerprint sensor portion, thereby not affecting the touch function of the fingerprint device, thereby realizing effective multiplexing of the fingerprint device and the antenna radiator of the antenna, The space occupied by the fingerprint device is effectively utilized, the integration degree of the device is improved, and the occupation of the internal space of the terminal device is reduced, which is advantageous for miniaturization, thinning and thinning of the terminal device.
此外,馈电部分14包括馈点和/或地点。例如:PIFA(Planar Inverted F Antenna,平板倒置F天线)天线具有馈点和地点,单极天线只具有一个馈点,PIFA天线加寄生天线具有两个馈点和一个地点。In addition, the feed portion 14 includes feed points and/or locations. For example, a PIFA (Planar Inverted F Antenna) antenna has a feed point and a location, a monopole antenna has only one feed point, and a PIFA antenna plus a parasitic antenna has two feed points and one location.
参照图1所示,指纹器件还包括贴附于柔性电路板部分12的指纹芯片
15。指纹芯片外设置有屏蔽罩16,并且屏蔽罩16接地,其中屏蔽罩与地通过导电布电连接。这里指纹芯片主要对指纹传感器部分生成的触摸信号进行检测、转换等方式的处理,通过屏蔽罩对指纹芯片进行屏蔽可以避免外部信号对指纹芯片的干扰。Referring to FIG. 1, the fingerprint device further includes a fingerprint chip attached to the flexible circuit board portion 12.
15. A shield cover 16 is disposed outside the fingerprint chip, and the shield cover 16 is grounded, wherein the shield cover is electrically connected to the ground through the conductive cloth. Here, the fingerprint chip mainly processes the touch signal generated by the fingerprint sensor part in a manner of detection, conversion, etc., and shielding the fingerprint chip through the shield cover to avoid interference of the external signal on the fingerprint chip.
本申请的实施例还提供一种终端设备,包括上述任一指纹器件。如图5所示,指纹器件10设置在终端设备的显示面板的非显示区域20。一种示例为:指纹器件10设置于非显示区域的起始home键位置。An embodiment of the present application further provides a terminal device, including any of the above fingerprint devices. As shown in FIG. 5, the fingerprint device 10 is disposed in the non-display area 20 of the display panel of the terminal device. An example is where the fingerprint device 10 is placed at the starting home key location of the non-display area.
终端设备的主板上设置有弹脚,导电补强板与弹脚电连接,弹脚用于接地,或者弹脚连接主板上的射频电路。结合第一方面,弹脚具体用于与馈点或地点连接。示例性的,针对PIFA天线,则需要设置两个弹脚,一个弹脚连接馈点、另一弹脚连接地点,针对单极天线则只需要设置一个弹脚,连接馈点;针对PIFA天线加寄生天线则需要设置三个弹脚,分别连接两个馈点和一个地点。The main board of the terminal device is provided with a spring foot, and the conductive reinforcing plate is electrically connected with the elastic foot, the elastic foot is used for grounding, or the elastic foot is connected to the radio frequency circuit on the main board. In combination with the first aspect, the foot is specifically configured to be coupled to a feed point or location. Exemplarily, for the PIFA antenna, two bullets are required, one for connecting the feed point and the other for connecting the foot. For the monopole antenna, only one foot is needed to connect the feed point; for the PIFA antenna Parasitic antennas require three footers to connect two feed points and one location.
终端设备的主板上设置有定位支架,导电补强板固定于定位支架上。本申请对定位支架的方式不作限定,例如:定位支架可以为若干定位柱,通过与导电补强板上的过孔配合固定,或者定位支架为与导电补强板外缘形状配合的卡槽。此外,指纹传感器部分通过粘接方式或者通过支撑架方式固定于终端设备的主板上。A positioning bracket is disposed on the main board of the terminal device, and the conductive reinforcing plate is fixed on the positioning bracket. The positioning of the bracket is not limited. For example, the positioning bracket may be a plurality of positioning posts, which are fixed by being matched with the through holes of the conductive reinforcing plate, or the positioning bracket is a card slot that is shaped to match the outer edge of the conductive reinforcing plate. In addition, the fingerprint sensor portion is fixed to the main board of the terminal device by bonding or by a support frame.
对上述结构的指纹器件所包含的天线辐射体的性能在5G(5th-Generation,第五代移动通信技术)无线通通信条件下进行测试,测试结果如图6、7所示,其中,The performance of the antenna radiator included in the fingerprint device of the above structure is tested under the 5G (5th-generation, fifth generation mobile communication technology) wireless communication condition, and the test results are shown in FIGS. 6 and 7, wherein
图6示出了在不同频率下天线的回波损耗,其中纵轴为:回波损耗(单位dB),横轴为:频率(单位GHz);图7示出了在不同频率下天线的天线效率,其中纵轴为:天线效率(单位dB),横轴为:频率(单位GHz);其中,在5G的免费频段5.150GHz-5.825GHz范围内,回波损耗小于-2.25dB,其对应的天线效率大于-5dB,这种结构设计的天线效率满足要求。Figure 6 shows the return loss of the antenna at different frequencies, where the vertical axis is: return loss (in dB), the horizontal axis is: frequency (in GHz); Figure 7 shows the antenna of the antenna at different frequencies Efficiency, where the vertical axis is: antenna efficiency (in dB), and the horizontal axis is: frequency (in GHz); where, in the 5G free band 5.150GHz-5.825GHz, the return loss is less than -2.25dB, which corresponds to The antenna efficiency is greater than -5dB, and the antenna efficiency of this structural design meets the requirements.
以上,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以权利要求的保护范围为准。
The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It is within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims (11)
- 一种指纹器件,其特征在于,包括:指纹传感器部分和柔性电路板部分,其中所述指纹传感器部分通过所述柔性电路板部分连接至终端的主板;A fingerprint device, comprising: a fingerprint sensor portion and a flexible circuit board portion, wherein the fingerprint sensor portion is connected to a main board of the terminal through the flexible circuit board portion;所述指纹传感器部分和所述柔性电路板部分覆盖有低损耗金属导体,形成天线辐射体,所述指纹传感器部分包括触摸电路,所述天线辐射体对应所述触摸电路的触摸面处镂空;The fingerprint sensor portion and the flexible circuit board portion are covered with a low loss metal conductor to form an antenna radiator, and the fingerprint sensor portion includes a touch circuit, and the antenna radiator is hollowed out corresponding to the touch surface of the touch circuit;所述柔性电路板部分上设置有导电补强板,所述导电补强板电连接所述天线辐射体,所述导电补强板用作所述天线辐射体的馈电部分。The flexible circuit board portion is provided with a conductive reinforcing plate electrically connected to the antenna radiator, and the conductive reinforcing plate is used as a feeding portion of the antenna radiator.
- 根据权利要求1所述的指纹器件,其特征在于,所述指纹传感器部分包括触摸电路和位于所述触摸电路下方的支撑板,其中,所述天线辐射体用作所述触摸电路的支撑板。The fingerprint device according to claim 1, wherein the fingerprint sensor portion includes a touch circuit and a support plate located under the touch circuit, wherein the antenna radiator serves as a support plate of the touch circuit.
- 根据权利要求1所述的指纹器件,其特征在于,所述柔性电路板部分外侧镀有低损耗金属导体。The fingerprint device of claim 1 wherein the flexible circuit board portion is plated with a low loss metal conductor.
- 根据权利要求1所述的指纹器件,其特征在于,所述馈电部分包括馈点和/或地点。The fingerprint device of claim 1 wherein the feed portion comprises a feed point and/or a location.
- 根据权利要求1所述的指纹器件,其特征在于,所述指纹器件还包括贴附于所述柔性电路板部分的指纹芯片。The fingerprint device of claim 1 wherein said fingerprint device further comprises a fingerprint chip attached to said flexible circuit board portion.
- 根据权利要求5所述的指纹器件,其特征在于,所述指纹芯片外设置有屏蔽罩,并且所述屏蔽罩接地。The fingerprint device according to claim 5, wherein a shield cover is disposed outside the fingerprint chip, and the shield is grounded.
- 一种终端设备,其特征在于,包括如权利要求1-6任一项所述的指纹器件。A terminal device, comprising the fingerprint device according to any one of claims 1-6.
- 根据权利要求7所述的终端设备,其特征在于,所述指纹器件设置在所述终端设备的显示面板的非显示区域。The terminal device according to claim 7, wherein the fingerprint device is disposed in a non-display area of a display panel of the terminal device.
- 根据权利要求7所述的终端设备,其特征在于,所述终端设备的主板上设置有弹脚,所述导电补强板与所述弹脚电连接;The terminal device according to claim 7, wherein a mechanical foot is disposed on a main board of the terminal device, and the conductive reinforcing plate is electrically connected to the elastic foot;所述弹脚用于接地,或者,所述弹脚连接所述主板上的射频电路。The foot is used for grounding, or the foot is connected to a radio frequency circuit on the main board.
- 根据权利要求7所述的终端设备,其特征在于,所述终端设备的主板上设置有定位支架,所述导电补强板固定于所述定位支架上。The terminal device according to claim 7, wherein a positioning bracket is disposed on the main board of the terminal device, and the conductive reinforcing plate is fixed on the positioning bracket.
- 根据权利要求7所述的终端设备,其特征在于,所述指纹传感器部分通过粘接方式或者通过支撑架方式固定于所述终端设备的主板上。 The terminal device according to claim 7, wherein the fingerprint sensor portion is fixed to the main board of the terminal device by bonding or by a support frame.
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CN201780003925.3A CN108323205A (en) | 2017-02-16 | 2017-06-08 | A kind of fingerprint device and terminal device |
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