Fingerprint module and electronic device

Abstract

This application discloses a fingerprint module and an electronic device. The fingerprint module includes: a substrate; a detection module disposed on the substrate, the detection module including at least two detection units, the orthographic projections of each detection unit at least partially overlapping in a first direction, and the detection directions of each detection unit being staggered, the first direction being the thickness direction of the substrate; and an ultrasonic circuit module disposed on the substrate and electrically connected to the detection module. By setting at least two detection units in the detection module whose orthographic projections at least partially overlap in the first direction, and the detection directions of each detection unit being staggered, the integration of each detection unit in the detection module is improved, and the area ratio of the detection module on the substrate surface is reduced. This allows the detection module to provide multi-directional pressure-sensitive detection without increasing the overall size of the fingerprint module, and also increases the area ratio of the ultrasonic circuit module on the substrate surface, thereby improving the performance of the fingerprint module.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to a fingerprint module and an electronic device. Background Technology

[0002] With technological advancements and increasing demands for multi-scenario functionality in mobile phones, the application of under-display pressure-sensitive ultrasonic fingerprint technology is gaining popularity. In the design of under-display pressure-sensitive ultrasonic fingerprint sensors, given the growing demand for improved pressure sensitivity, the fingerprint detection module needs to enhance its multi-directional pressure detection performance. This often leads to an increase in the area occupied by the detection module within the fingerprint module, resulting in a decrease in overall performance. Summary of the Invention

[0003] This application provides a fingerprint module and an electronic device that can solve the problem in the prior art where, in order to improve the multi-directional pressure sensing performance of the fingerprint module, the area of ​​the detection module on the substrate surface of the fingerprint module increases, while the area of ​​the ultrasonic circuit module is low, resulting in a decrease in the performance of the fingerprint module.

[0004] In a first aspect, embodiments of this application provide a fingerprint module, comprising: a substrate; a detection module disposed on the substrate, the detection module including at least two detection units, the orthographic projections of each detection unit in a first direction at least partially overlapping, and the detection directions of each detection unit being staggered, the first direction being the thickness direction of the substrate; and an ultrasonic circuit module disposed on the substrate and electrically connected to the detection module.

[0005] Secondly, embodiments of this application provide an electronic device including the fingerprint module described in the first aspect embodiment above.

[0006] Thus, in the fingerprint module and electronic device provided in this application embodiment, the fingerprint module includes a substrate, a detection module and an ultrasonic circuit module. The detection module and the ultrasonic circuit module are disposed on the substrate. The detection module includes at least two detection units. The orthographic projections of each detection unit in the first direction at least partially overlap, and the detection directions of each detection unit are staggered, so that the detection module can provide multi-directional pressure-sensitive detection function, improve the user's pressure-sensitive experience, and reduce the area ratio of the detection module on the substrate surface.

[0007] Therefore, in this embodiment of the application, by setting at least two detection units in the detection module whose orthographic projections in the first direction at least partially overlap, and the detection directions of each detection unit are staggered, the integration of each detection unit in the detection module is improved, the area ratio of the detection module on the substrate surface is reduced, and the detection module can provide multi-directional pressure sensing without increasing the overall size of the fingerprint module. In addition, the area ratio of the ultrasonic circuit module on the substrate surface can be increased, thereby improving the performance of the fingerprint module. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is an exploded view of a fingerprint module according to some embodiments of this application;

[0010] Figure 2 This is a partial structural diagram of a fingerprint module according to some embodiments of this application;

[0011] Figure 3 This is a schematic diagram of the detection direction of the detection unit of the fingerprint module in some embodiments of this application;

[0012] Figure 4 This is a partial structural diagram of a fingerprint module according to some embodiments of this application;

[0013] Figure 5 This is a partial structural side view of a fingerprint module according to some embodiments of this application;

[0014] Figure 6 This is a schematic diagram of the structure of the detection module in some embodiments of this application;

[0015] Figure 7 This is a schematic diagram of the structure of the detection module of the fingerprint module in some other embodiments of this application;

[0016] Figure 8 This is a partial structural diagram of a fingerprint module according to some embodiments of this application;

[0017] Figure 9 This is a circuit diagram of the detection module of a fingerprint module according to some embodiments of this application;

[0018] Figure 10 This is a circuit diagram of the detection module of a fingerprint module in some other embodiments of this application.

[0019] Explanation of icon numbers:

[0020] 100. Fingerprint module;

[0021] 110. Substrate;

[0022] 120. Detection module; 121. Detection unit; 122. Insulating layer; 1211. First detection unit; 1212. Second detection unit; 123. Bridge arm; 124. Intersection point; 125. Switch assembly; 1251. Switching element; 1231. First part; 1232. Second part; 126. Resistor;

[0023] 130. Ultrasonic circuit module;

[0024] 140. Cover plate. Detailed Implementation

[0025] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "middle", "rear", "left", "right", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] The first direction X mentioned below is specifically shown by the arrow in the figure. The setting of the first direction X is only to more clearly illustrate the structure of the connecting member and electronic device provided in the embodiments of this application, and does not limit the direction of the embodiments of this application.

[0030] Please see Figure 1 and Figure 2 , Figure 1This is an exploded view of a fingerprint module according to some embodiments of this application; Figure 2 This is a partial structural diagram of a fingerprint module according to some embodiments of this application.

[0031] Firstly, such as Figure 1 and Figure 2 As shown, this application embodiment provides a fingerprint module 100, which includes a substrate 110, a detection module 120, and an ultrasonic circuit module 130. The detection module 120 is disposed on the substrate 110 and includes at least two detection units 121. The orthographic projections of each detection unit 121 on a first direction X at least partially overlap, and the detection directions of each detection unit 121 are staggered. The first direction X is the thickness direction of the substrate 110. The ultrasonic circuit module 130 is disposed on the substrate 110 and electrically connected to the detection module 120.

[0032] In the fingerprint module 100 and electronic device provided in this application embodiment, the fingerprint module 100 includes a substrate 110, a detection module 120 and an ultrasonic circuit module 130. The detection module 120 and the ultrasonic circuit module 130 are disposed on the substrate. The detection module 120 includes at least two detection units 121. The orthographic projections of each detection unit 121 in the first direction X at least partially overlap, and the detection directions of each detection unit 121 are staggered so that the detection module 120 can provide multi-directional pressure-sensitive detection function, improve the user's pressure-sensitive experience, and reduce the area ratio of the detection module 120 on the surface of the substrate 110. By setting at least two detection units 121 in the detection module 120 whose orthogonal projections in the first direction X at least partially overlap, and the detection directions of each detection unit 121 are staggered, the integration of each detection unit 121 in the detection module 120 is increased, the area ratio of the detection module 120 on the surface of the substrate 110 is reduced, and the detection module 120 can provide multi-directional pressure sensing without increasing the overall size of the fingerprint module 100. It can also increase the area ratio of the ultrasonic circuit module 130 on the surface of the substrate 110, thereby improving the performance of the fingerprint module 100.

[0033] In the fingerprint module 100 of this application embodiment, the fingerprint module 100 includes a substrate 110 and a detection module 120. The substrate 110 can be a TFT (Thin Film Transistor) glass substrate. In some embodiments, the detection unit 121 is a Wheatstone bridge. The Wheatstone bridge unit generates a voltage change when subjected to external pressure, and its voltage change is most significant when subjected to pressure in a specific direction, thereby realizing the pressure-sensitive detection function of the detection unit 121. The detection direction of the detection unit 121 is the pressure direction when the voltage change is most significant. Different Wheatstone bridge units include different detection directions. The Wheatstone bridge includes bridge arms (not shown in the figure), and the pressure-sensitive detection direction can be a direction parallel to the bridge arms. The detection directions of the detection units 121 in the detection module 120 are staggered so that the detection module 120 can provide pressure-sensitive detection functions in multiple directions.

[0034] The fingerprint module 100 also includes an ultrasonic circuit module 130, which can be used to control the on / off state of the TFT switch in the substrate 110 to receive pressure-sensitive signals and transmit data with the control unit of the device. Both the ultrasonic circuit module 130 and the detection module 120 are disposed on the surface of the substrate 110. By reducing the area ratio of the detection module 120 on the surface of the substrate 110, the area ratio of the ultrasonic circuit module 130 on the surface of the substrate 110 can be increased, thereby improving the performance of the fingerprint module 100. For example, the control unit of the device is a CPU (Central Processing Unit). The fingerprint module 100 also includes a cover plate 140 that covers the substrate 110.

[0035] "The orthographic projections of each detection unit 121 on the first direction X at least partially overlap", and the size and shape of each detection unit 121 located in the same detection module 120 are the same or different.

[0036] The same detection module 120 includes at least two detection units 121 with different detection directions.

[0037] Please see Figure 3 , Figure 3 This is a schematic diagram of the detection direction of the detection unit of the fingerprint module in some embodiments of this application.

[0038] In some embodiments, such as Figure 2 and Figure 3 As shown, the detection unit 121 is rectangular, and the detection direction is parallel to the side of the rectangle. The detection directions of each detection unit 121 are in an arithmetic sequence.

[0039] In these embodiments, the detection directions of each detection unit 121 are arranged in an arithmetic sequence to improve the detection reliability of the fingerprint module 100.

[0040] The detection unit 121 is rectangular, and includes a length direction and a width direction. The detection direction of the detection unit 121 is the length direction and the width direction of the rectangular detection unit 121, that is, the detection direction is parallel to the side of the rectangular detection unit 121. (See attached image) Figure 3 As shown, a detection unit 121 includes a first detection direction Y1 and a second detection direction Y2. In actual manufacturing, the specific shape of the detection unit 121 can be set according to actual needs.

[0041] "The detection directions of each detection unit 121 are in an arithmetic sequence" means that in the same detection module 120, the angles between the detection directions of each detection unit 121 and one edge of the substrate 110 are in an arithmetic sequence. For example, in the same detection module 120, the detection directions of each detection unit 121 are 0°, 45°, 90° and 135°.

[0042] Optionally, in the same detection module 120, the angular difference between the detection directions of adjacent detection units 121 in the first direction X is an arithmetic sequence. Alternatively, in the same detection module 120, the detection directions of each detection unit 121 increase sequentially from the detection unit 121 closest to the substrate 110 to the detection unit 121 furthest from the substrate 110.

[0043] Optionally, the detection directions of each detection unit 121 located within the same detection module 120 are different, so that the same detection module 120 can provide multiple different pressure sensing direction detection effects.

[0044] When a user presses the fingerprint module 100, the device's control unit initiates pressure detection of the fingerprint module 100. The CPU sends a detection command to the ultrasonic circuit module 130, which then activates pressure detection in one detection unit 121. The detection unit 121 then feeds back pressure information to the ultrasonic circuit module 130, which in turn transmits it to the CPU. The CPU then initiates pressure detection in another detection unit 121 through the ultrasonic circuit module 130 and obtains the pressure detection data from that unit. This process continues, allowing for the acquisition of pressure detection information from multiple directions. Different detection units 121 have different detection directions.

[0045] Optional, such as Figure 2 As shown, the detection units 121 located within the same detection module 120 are coaxially arranged. This increases the overlapping area of ​​the orthographic projection of each detection unit 121 in the first direction X, which helps to reduce the area ratio of the detection module 120 on the surface of the substrate 110.

[0046] Each detection unit 121 has the same size and shape. The detection units 121 located in the same detection module 120 are coaxially stacked along the first direction X to reduce the area ratio of the detection module 120 on the surface of the substrate 110 and reduce the process difficulty of the detection module 120.

[0047] Please see Figure 4 and Figure 5 , Figure 4 This is a partial structural diagram of a fingerprint module according to some embodiments of this application; Figure 5 This is a partial structural side view of a fingerprint module according to some embodiments of this application.

[0048] In some embodiments, such as Figures 2 to 5 As shown, each detection unit 121 is stacked along the first direction X, and an insulating layer 122 is provided between adjacent detection units 121.

[0049] In these embodiments, each detection unit 121 is stacked along the first direction X, and an insulating layer 122 is provided between adjacent detection units 121 to improve the insulation performance of the detection module 120, reduce the risk of short circuit between adjacent detection units 121, and improve the reliability of the fingerprint module 100.

[0050] Optionally, the orthographic projection of the detection unit 121 in the first direction X is located within the insulating layer 122 to improve the insulation performance between adjacent detection units 121.

[0051] Optionally, each detection unit 121 is electrically connected to an external component. The CPU sequentially initiates pressure sensing detection on each detection unit 121 and obtains the pressure sensing data of each detection unit 121. The pressure sensing data includes the direction and intensity of the pressure applied to the fingerprint module 100.

[0052] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of the detection module in some embodiments of this application.

[0053] In some embodiments, such as Figure 2 and Figure 6 As shown, the detection unit 121 includes a first detection unit 1211 and at least one second detection unit 1212, wherein the orthographic projection of the second detection unit 1212 in the first direction X is located within the first detection unit 1211.

[0054] In these embodiments, the detection unit 121 includes a first detection unit 1211 and at least one second detection unit 1212. The orthographic projection of the second detection unit 1212 in the first direction X is located within the first detection unit 1211. That is, the area of ​​the detection module 120 on the surface of the substrate 110 is the area of ​​the first detection unit 1211, so as to reduce the area ratio of the detection module 120 on the surface of the substrate 110 and improve the performance of the fingerprint module 100.

[0055] The area of ​​the first detection unit 1211 is larger than the area of ​​the second detection unit 1212. The first detection unit 1211 and at least one second detection unit 1212 are stacked so that the area occupied by the detection module 120 on the surface of the substrate 110 is the area of ​​the first detection unit 1211. The areas of each second detection unit 1212 may be the same or different.

[0056] Optionally, the first detection unit 1211 is disposed on the surface of the substrate 110, and the second detection unit 1212 is stacked on the side of the first detection unit 1211 away from the substrate 110, so as to improve the stability of the detection module 120.

[0057] Please see Figures 7 to 9 , Figure 7 This is a schematic diagram of the structure of the detection module of the fingerprint module in some other embodiments of this application; Figure 8 This is a partial structural diagram of a fingerprint module according to some embodiments of this application; Figure 9 This is a circuit diagram of the detection module of a fingerprint module according to some embodiments of this application.

[0058] In some embodiments, such as Figures 7 to 9 As shown, the detection unit 121 includes four interconnected bridge arms 123 and four intersections 124. Two adjacent bridge arms 123 are connected at the intersections 124, and the intersections 124 are electrically connected to the substrate 110. The detection module 120 includes n detection units 121. The (n-1)th detection unit 121 is sleeved outside the nth detection unit 121, and the intersection 124 of the nth detection unit 121 is electrically connected to the bridge arms 123 of the (n-1)th detection unit 121, and n≥2. The detection module 120 also includes a switch assembly 125, which is used to control the on / off state of each detection unit 121.

[0059] In these embodiments, the detection module 120 includes n detection units 121, the (n-1)th detection unit is sleeved outside the nth detection unit, and the intersection 124 of the nth detection unit is electrically connected to the bridge arm 123 of the (n-1)th detection unit, and n≥2, so as to improve the integration of each detection unit 121 in the detection module 120, reduce the area ratio of the detection module 120 on the surface of the substrate 110, and not increase the size of the fingerprint module 100 in the first direction X, thereby improving the performance of the fingerprint module 100.

[0060] The detection unit 121 is a Wheatstone bridge, which includes four interconnected bridge arms 123, namely the first arm, second arm, third arm, and fourth arm. The first and second arms are connected in series to form the first circuit, and the third and fourth arms are connected in series to form the second circuit. The first and second circuits are connected in parallel. The intersection 124 between the first and second arms is the first intersection 124, the intersection 124 between the second and third arms is the second intersection 124, the intersection 124 between the third and fourth arms is the third intersection 124, and the intersection 124 between the fourth and first arms is the fourth intersection 124. The first intersection 124 is connected to the power supply, and the third intersection 124 is grounded. During pressure sensing, the pressure difference between the second and fourth intersections 124 will change.

[0061] Multiple detection units 121 are nested together. The first detection unit is located on the outermost side, and a connecting line directly connects the first detection unit to the substrate 110. The second detection unit is located inside the first detection unit, and its intersection point 124 is connected to the electrical bridge arm 123 of the first detection unit. The second detection unit is electrically connected to the substrate 110 through at least a portion of the electrical bridge arm 123 of the first detection unit and the connecting line. The extension directions of the electrical bridge arm 123 of the second detection unit and the electrical bridge arm 123 of the first detection unit intersect, meaning the detection directions of the first and second detection units are different. Similarly, a third detection unit is connected within the second detection unit, and so on, to the nth detection unit. Furthermore, the detection directions of the first to the nth detection units are different.

[0062] The switch components 125 are respectively disposed in each detection unit 121 and are used to control the circuit and open circuit states of each detection unit 121. When the user presses the fingerprint module 100, the CPU obtains the pressure data of each detection unit 121 in sequence. When the CPU obtains the pressure data of one detection unit 121, the switch components 125 located in other detection units 121 are turned on so that the detection unit 121 is in the open circuit state.

[0063] In some embodiments, such as Figures 7 to 9As shown, the switch assembly 125 includes a switch element 1251, and the bridge arm 123 includes a first part 1231 and a second part 1232 that are connected to each other. In a detection unit 121, the two ends of the first part 1231 of each bridge arm 123 are respectively connected to the two second parts 1232. The switch element 1251 is disposed in the second part 1232. When the second part 1232 of the nth detection unit is in the closed state, the second part 1232 of the (n-1)th detection unit is in the open state. The bridge arm 123 of the nth detection unit and the first part 1231 of the (n-1)th detection unit are electrically connected.

[0064] In these embodiments, the bridge arm 123 includes a first part 1231 and a second part 1232 that are interconnected. A switch 1251 is disposed on the second part 1232. When the second part 1232 of the nth detection unit 121 is in the on state, the second part 1232 of the (n-1)th detection unit 121 is in the off state. The bridge arm 123 of the nth detection unit 121 and the first part 1231 of the (n-1)th detection unit 121 are electrically connected to facilitate the control of each detection unit 121 and the on / off state of each bridge arm 123, thereby improving the control accuracy of the detection unit 121.

[0065] When a user presses the fingerprint module 100, when the CPU obtains the pressure data of the nth detection unit 121, the switch 1251 of the second part 1232 of the nth detection unit 121 is closed, and the switches 1251 of the other detection units 121 are opened. The nth detection unit 121 is electrically connected to external components through the first part 1231 of the first detection unit 121 to the (n-1)th detection unit 121.

[0066] In some embodiments, such as Figure 8 and Figure 9 As shown, the resistance values ​​of each first part 1231 of the same detection unit 121 are the same, and / or the resistance values ​​of each second part 1232 of the same detection unit 121 are the same.

[0067] In these embodiments, the resistance values ​​of each first portion 1231 of the same detection unit 121 are the same, and / or the resistance values ​​of each second portion 1232 of the same detection unit 121 are the same, so as to facilitate the design and differentiation of the detection direction of each detection unit 121, and to facilitate the acquisition of the differential pressure data of each detection unit 121, thereby reducing the manufacturing difficulty of the fingerprint module 100.

[0068] Optionally, the detection unit 121 is square, and the first part 1231 and the second part 1232 of each bridge arm 123 have the same size ratio.

[0069] Please see Figure 10 , Figure 10This is a circuit diagram of the detection module of a fingerprint module in some other embodiments of this application.

[0070] In some embodiments, such as Figures 7 to 10 As shown, the bridge arm 123 includes a resistor 126, which is located in the second part 1232.

[0071] In these embodiments, the bridge arm 123 includes a resistor 126 located in the second portion 1232 to reduce the manufacturing difficulty of the detection unit 121 and the processing difficulty of the pressure-sensitive data of the detection unit 121, thereby improving the practicality of the fingerprint module 100.

[0072] Secondly, embodiments of this application provide an electronic device including the fingerprint module described in the first aspect embodiment above.

[0073] Since the electronic device provided in the second aspect of this application includes the fingerprint module of any of the embodiments of the first aspect described above, the electronic device provided in the second aspect of this application has the beneficial effects of the fingerprint module of any of the embodiments of the first aspect described above, which will not be repeated here.

[0074] The electronic devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, laptops, televisions, dashcams, and other devices with camera functions.

[0075] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A fingerprint module, characterized in that, include: substrate; A detection module is disposed on the substrate. The detection module includes at least two detection units. The orthographic projections of each detection unit in a first direction at least partially overlap, and the detection directions of each detection unit are staggered. The first direction is the thickness direction of the substrate. An ultrasonic circuit module is mounted on the substrate and electrically connected to the detection module. The detection unit includes four interconnected bridge arms and four intersections. Adjacent bridge arms are connected at the intersections, and the intersections are electrically connected to the substrate. The detection module includes n detection units, with the (n-1)th detection unit nested outside the nth detection unit, and the intersection of the nth detection unit is electrically connected to the bridge arm of the (n-1)th detection unit, where n ≥ 2. The detection module further includes a switch assembly, which is used to control the on / off states of each detection unit.

2. The fingerprint module according to claim 1, characterized in that, The detection unit is a Wheatstone bridge.

3. The fingerprint module according to claim 2, characterized in that, The detection unit is rectangular, and the detection direction is parallel to the side of the rectangle. The detection directions of each detection unit form an arithmetic sequence.

4. The fingerprint module according to any one of claims 1-3, characterized in that, Each of the detection units is stacked along the first direction, and an insulating layer is provided between adjacent detection units.

5. The fingerprint module according to claim 4, characterized in that, The detection unit includes a first detection unit and at least one second detection unit, wherein the orthographic projection of the second detection unit in the first direction is located within the first detection unit.

6. The fingerprint module according to claim 1, characterized in that, The switching assembly includes a switching element, and the bridge arm includes a first part and a second part that are connected to each other. In one detection unit, the two ends of the first part of each bridge arm are respectively connected to two second parts, and the switching element is disposed in the second part. When the second part of the nth detection unit is in a closed state, the second part of the (n-1)th detection unit is in a closed state, and the bridge arm of the nth detection unit and the first part of the (n-1)th detection unit are electrically connected.

7. The fingerprint module according to claim 6, characterized in that, The resistance values ​​of each of the first portions of the same detection unit are the same, and / or the resistance values ​​of each of the second portions of the same detection unit are the same.

8. The fingerprint module according to claim 6, characterized in that, The bridge arm includes a resistor, which is located in the second part.

9. An electronic device, characterized in that, Includes the fingerprint module described in any one of claims 1-8.

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