Touch detection module and electronic equipment

Abstract

The embodiment of the utility model discloses a touch detection module and electronic equipment. The touch detection module comprises a plurality of ultrasonic modules, the ultrasonic modules are linearly arranged, a gap is formed between detection areas of every two adjacent ultrasonic modules, each ultrasonic module comprises a substrate, a lower electrode layer is arranged on the substrate, the lower electrode layer comprises a plurality of electrodes, and the electrodes are arranged on the substrate. The area where the plurality of electrodes are located forms a detection area. The multiple ultrasonic modules are arranged in the linear queue, the detection length can be increased, and the single size of the multiple modules is not too long, so that the manufacturing difficulty of the ultrasonic modules is reduced, the electronic equipment is easier to carry out man-machine interaction operation through the frame, and the man-machine interaction scene of the equipment is enriched.

Description

Technical Field

[0001] The utility model relates to the field of touch technology. More specifically, the present application relates to a touch detection module and an electronic device. Background Art

[0002] Setting a detection module on the frame of an intelligent terminal can provide a new interaction method. However, limited by the frame size, the size of a single sensor will be in a slender structure. Generally, the width of the sensor will be less than 3 mm, and the length of the detection area will reach 30 mm.

[0003] Since a single sensor is too long, limited by the attenuation and interference of the wiring, the signal difference on both sides of the sensor will increase, and the performance will deteriorate significantly. Therefore, for the detection length of a single sensor, the optimal performance length is usually <15 mm; since a single sensor is too long, its slender shape will be easily broken, resulting in poor mechanical strength. Considering mechanical reliability, when the width is only 3 mm, the length should not exceed 15 mm either.

[0004] Currently, there is no sensor suitable for the terminal frame. Summary of the Utility Model

[0005] In view of the deficiencies of the prior art, the present application innovatively provides a touch detection module and an electronic device, which can solve at least some of the above technical problems.

[0006] To achieve the above technical purpose, the first aspect of the present application discloses a touch detection module, including:

[0007] A plurality of ultrasonic modules, the plurality of ultrasonic modules are arranged in a straight line, and a gap is formed between the detection areas of two adjacent ultrasonic modules.

[0008] Each ultrasonic module in the plurality of ultrasonic modules includes a substrate, a lower electrode layer is provided on the substrate, the lower electrode layer includes a plurality of electrodes, and the area where the plurality of electrodes are located constitutes the detection area.

[0009] Further, a piezoelectric layer covering the lower electrode is provided on the upper surface of the lower electrode, and a common electrode layer is covered on the piezoelectric layer.

[0010] Further, the gap between the detection areas of two adjacent ultrasonic modules is 4 mm - 7 mm.

[0011] Further, there is a physical gap between two adjacent ultrasonic modules.

[0012] Further, the ultrasonic module includes a queue module, and the plurality of electrodes on the queue module are arranged in a straight-line queue.

[0013] Further, the operating frequency of the queue module is 1 MHz - 25 MHz.

[0014] Further, the ultrasonic module includes an array module, and the multiple electrodes on the array module are arranged in a multi-column array.

[0015] Further, the operating frequency of the array module is 10 MHz - 25 MHz.

[0016] Further, the ultrasonic module includes a queue module and an array module, wherein

[0017] the multiple electrodes on the queue module are arranged in a linear queue;

[0018] the multiple electrodes on the array module are arranged in a multi-column array.

[0019] Further, the operating frequency of the queue module is 1 MHz - 25 MHz, and the operating frequency of the array module is 10 MHz - 25 MHz.

[0020] Further, the queue module is electrically connected to the array module, and an output terminal is provided on the array module, and the output terminal is used to connect to a controller.

[0021] Further, two array modules are provided.

[0022] A second aspect of the present application discloses an electronic device, including a frame, and the above-mentioned touch detection module is provided on the frame.

[0023] Further, a button is provided on the frame, and the touch detection module is provided on the inner wall of the button.

[0024] Further, a plurality of buttons are provided, and one ultrasonic module is provided on the inner wall of each button.

[0025] The beneficial effects of the present application are as follows:

[0026] In the present application, multiple ultrasonic modules are arranged in a linear queue, which can increase the detection length, and the single size of multiple modules will not be too long, thereby reducing the manufacturing difficulty of the ultrasonic module, making it easier for the electronic device to achieve human-computer interaction operations through the frame, and enriching the human-computer interaction scenarios of the device. Description of the Drawings

[0027] Figure 1 Showing a schematic structural diagram of an ultrasonic module according to an embodiment of the present application;

[0028] Figure 2 Showing a schematic structural diagram of a touch detection module according to an embodiment of the present application;

[0029] Figure 3 Schematic diagram showing the electrode distribution structure of the queue module according to an embodiment of the present application;

[0030] Figure 4 Schematic diagram showing the structure of the queue module according to an embodiment of the present application;

[0031] Figure 5 Schematic diagram showing the electrode distribution structure of the array module according to an embodiment of the present application;

[0032] Figure 6 Schematic diagram showing the structure of the array module according to an embodiment of the present application;

[0033] Figure 7 Schematic diagram showing the structure of the touch detection module according to an embodiment of the present application;

[0034] Figure 8 Schematic diagram showing the structure of the touch detection module according to an embodiment of the present application;

[0035] Figure 9 Schematic diagram showing the structure of the touch detection module according to an embodiment of the present application;

[0036] Figure 10 Schematic diagram showing the structure of the touch detection module according to an embodiment of the present application;

[0037] Figure 11 Schematic diagram showing the structure of the touch detection module according to an embodiment of the present application;

[0038] Figure 12 Schematic diagram showing the structure of the touch detection module according to an embodiment of the present application;

[0039] Figure 13 Schematic diagram showing the structure of the touch detection module according to an embodiment of the present application;

[0040] Figure 14 Schematic diagram showing the structure of the touch detection module according to an embodiment of the present application;

[0041] Figure 15 Schematic diagram showing the installation state of the touch detection module on the border according to an embodiment of the present application;

[0042] Figure 16 Schematic diagram showing the structure of the electronic device with the touch detection module installed according to an embodiment of the present application;

[0043] Figure 17 Schematic diagram showing the structure of the electronic device with the touch detection module installed according to an embodiment of the present application;

[0044] Figure 18 Schematic diagram showing the structure of the electronic device with the touch detection module installed according to an embodiment of the present application;

[0045] Figure 19Schematic diagram showing the structure of a touch detection module installed on an electronic device according to an embodiment of the present application;

[0046] Figure 20 Schematic diagram showing the structure of a touch detection module installed on an electronic device according to an embodiment of the present application.

[0047] In the figure,

[0048] 1. Queue module; 2. Array module; 101. Substrate; 102. Lower electrode layer; 103. Piezoelectric layer; 104. Common electrode layer; 105. Electrode; 3. Frame; 4. Adhesive layer. Detailed implementation manners

[0049] The following clearly and completely describes the technical solutions of the touch detection module and the electronic device provided by the present utility model with reference to the accompanying drawings of the specification, and detailed explanations and descriptions are provided.

[0050] According to the first aspect of the embodiments of the present application, a touch detection module is provided, which is applicable to the side frame of a mobile terminal. Users can perform human-computer interaction operations through the frame, enriching the interaction scenario and improving the convenience of terminal operations.

[0051] In some embodiments, the touch detection module of the present application includes: as Figure 1 shown, a plurality of ultrasonic modules. Each ultrasonic module includes a lower electrode layer 102. The lower electrode layer 102 includes a plurality of electrodes 105. A piezoelectric layer 103 covering the lower electrode layer 102 is provided on the upper surface of the lower electrode layer 102. A common electrode layer 104 is covered on the piezoelectric layer 103. Among them, the piezoelectric layer 103 is made of a material with piezoelectric effect. The ultrasonic module further includes a substrate 101. The substrate 101 is disposed below the lower electrode layer 102 for carrying the lower electrode layer 102 and setting circuits. A driving circuit and an echo detection circuit can be integrated on the substrate 101, so that it can cooperate with the common electrode layer 104, the piezoelectric layer 103 and the lower electrode layer 102 in the ultrasonic wave to realize the basic function of touch detection through ultrasonic signals. The area where a plurality of electrodes are provided on the substrate 101 of the ultrasonic module constitutes a detection area. This area is a rectangular area, and the plurality of electrodes are distributed in the detection area in a queue or a rectangular array. As Figure 2As shown, multiple ultrasonic modules 1 and 2 are arranged in a line. A physical gap is formed between adjacent ultrasonic modules, and a gap H is formed between the detection areas of adjacent ultrasonic modules. This gap will form a detection blind area, so the gap cannot be too large. However, due to assembly process limitations, there must be a physical gap between the two ultrasonic modules. Therefore, there must be a gap H between the detection areas of the two ultrasonic modules. The pressing diameter of a finger is generally greater than 10 mm, and the gap H between the detection areas of adjacent two ultrasonic modules is set to 4 mm - 7 mm. This can ensure that when the finger slides between the two ultrasonic modules, the finger can effectively press on at least one ultrasonic module's detection area. For example, the gap between adjacent two ultrasonic modules is set to 6 mm, ensuring that in extreme cases, the finger can press on the areas 2 mm from the edges of the detection areas of both ultrasonic modules, ensuring that when the finger slides back and forth between the two ultrasonic modules, the finger will not go undetected.

[0052] In some embodiments, the ultrasonic module includes a queue module 1, as Figure 3 , Figure 4 shown. On the queue module 1, multiple electrodes 105 of the lower electrode layer 102 are arranged in a linear queue, enabling the ultrasonic module to further have the functions of finger pressing detection or finger sliding detection. The operating frequency of the queue module 1 is 1 MHz - 25 MHz. By judging the position corresponding to the finger pressing different electrodes 105, the position of the finger can be judged. Further, it can also be judged whether the finger slides and the direction and speed of the sliding, etc. The length of the detection area of the queue module 1, i.e., the detection length, is 5 mm - 15 mm. For example, it can be set to 10 mm. When two queue modules 1 are set, the two queue modules 1 are arranged in a line, the gap between them is set to 5 mm, and the sum of the detection lengths of the two queue modules 1 is 20 mm. The total detection length can reach 25 mm, which can meet the detection length requirements of the touch detection module.

[0053] In some embodiments, the ultrasonic module includes an array module 2, as Figure 5 , Figure 6As shown, multiple electrodes 105 of the lower electrode layer 102 of the array module 2 are arranged in a multi-column array. In the embodiments of the present application, there is no limitation on the specific image array presented by the multiple electrodes 105, and a rectangular array is preferably used. Since the ultrasonic module includes the array module 2, the ultrasonic module further has the ability of two-dimensional imaging. Optionally, the pixel size is between 40um and 100um, and it has the ability of fingerprint imaging. Further, the operating frequency of the array module 2 is 10MHz - 25MHz. The detection area length of the array module 2, that is, the detection length, is 5mm - 15mm. For example, it can be set to 10mm. When two array modules 2 are set, the two array modules 2 are arranged in a straight line, the gap between them is set to 5mm, and the sum of the detection lengths of the two array modules 2 is 20mm, and the total detection length can reach 25mm, which can meet the detection length requirements of the touch detection module.

[0054] In some embodiments, as Figure 2 shown, the ultrasonic module includes the queue module 1 and the array module 2. For example, setting one array module 2 and one queue module 1 can simultaneously have the functions of detecting finger pressing or sliding and fingerprint detection. Both the queue module 1 and the array module 2 are connected to the terminal controller, and the queue module 1 and the array module 2 independently transmit signals to the terminal controller. Optionally, as Figure 7 shown, the queue module 1 is electrically connected to the array module 2. An output end is set on the array module 2, and it is electrically connected to the terminal controller through the output end of the array module 2, that is, the signal of the queue module 1 is processed by the array module 2 and then transmitted to the terminal controller.

[0055] In some embodiments, the ultrasonic module can also be provided with two queue modules 1, as Figure 8 shown, to achieve the function of only detecting pressing or sliding touch, enriching the touch scenario and reducing costs at the same time. Or, two array modules 2 can also be set, as Figure 9 shown, the two array modules 2 enable the entire detection area to perform sliding touch detection and fingerprint recognition. When two array modules 2 are set, finger sliding detection can be realized, and at the same time, large-area fingerprint detection can be realized, which is beneficial to improving the performance of fingerprint recognition. At the same time, this solution can also detect finger pressing and finger patterns throughout the process, with more information, so the judgment accuracy of finger sliding can be improved. And the two array modules 2 can detect the fingerprints of two fingers at the same time, achieving higher fingerprint application flexibility and security level.

[0056] In some embodiments, three ultrasonic modules can also be set, as Figures 10 - 14As shown, the detection range can be further increased. For example, two queue modules 1 and one array module 2 can be set, or one queue module 1 and two array modules 2, or three array modules 2 or three queue modules 1 are all acceptable. The three ultrasonic modules are arranged in a straight line.

[0057] In some embodiments, two queue modules 1 and one array module 2 are set, as Figure 12 and Figure 13 shown. The two queue modules 1 and the array module 2 can be independently electrically connected to the terminal controller. Or, as Figure 14 shown, the two queue modules 1 are electrically connected to the array module 2, and the array module 2 is electrically connected to the terminal controller. Optionally, the two queue modules 1 are arranged adjacent to each other, the array module 2 is arranged at one end of the two queue modules 1, or the array module 2 is arranged in the middle of the two queue modules 1. Different arrangement methods can be selected according to different functional requirements.

[0058] In some embodiments, two array modules 2 and one queue module 1 are set. Among them, as Figure 10 shown, the queue module 1 is arranged between the two array modules 2, or, as Figure 11 shown, the two array modules 2 are arranged adjacent to each other, and the queue module 1 is arranged at one end of the two array modules 2. Different arrangement methods can be selected according to different functional requirements.

[0059] According to the second aspect of the embodiments of the present application, an electronic device is provided, as Figure 15As shown, it includes a frame 3. Optionally, the thickness of the frame 3 is greater than 0.5 mm and less than 2 mm. A touch detection module is provided on the frame 3, and the touch detection module is adhered to the inner wall of the frame 3 through an adhesive layer 4. The touch detection module includes a plurality of ultrasonic modules, and the plurality of ultrasonic modules are arranged in a straight line. The setting of the ultrasonic modules enables the electronic device to have the function of human-computer interaction through the side frame 3, such as pressing control, sliding control, fingerprint unlocking, etc. The ultrasonic module includes a lower electrode layer 102, the lower electrode layer 102 includes a plurality of electrodes 105, the ultrasonic module further includes a substrate 101 for carrying the plurality of electrodes 105, a piezoelectric layer 103 covering the upper surfaces of the plurality of electrodes 105 of the lower electrode layer 102 is provided on the upper surface of the lower electrode layer 102, and a common electrode layer 104 is covered on the piezoelectric layer 103. A plurality of ultrasonic modules are provided, and a physical gap is formed between two adjacent ultrasonic modules. There is a gap H between the detection areas. The plurality of ultrasonic modules are electrically connected to the controller of the electronic device, and finger touch information is collected through the ultrasonic modules for human-computer interaction. Optionally, the frame 3 includes buttons, and the touch detection module is provided on the inner wall of the button. Optionally, a plurality of buttons are provided, and one ultrasonic module is provided on each button. For example, the buttons include a power button, a volume button, etc. The combination of the touch detection module and the button can make it compatible with the existing structure on the frame 3 without changing the existing structure of the frame 3. Optionally, when two array modules 2 are provided, the electronic device can implement the functions and applications of double-finger fingerprint unlocking or recognition, further improving the security of fingerprint recognition. At the same time, double fingers can trigger different application entrances, enhancing the interactivity.

[0060] In some embodiments, as Figures 16 - 20 shown, the button includes a power button, the ultrasonic module includes an array module 2 and a queue module 1, the queue module 1 and the array module 2 are adhered to the inner wall of the power button through an adhesive layer 4, and the fingerprint recognition function can be realized through the power button. The queue module 1 can be provided on the frame 3 on the side of the power button, or the button further includes a volume button, and the queue module 1 is provided on the volume button. When two queue modules 1 are provided, one queue module 1 can be provided on each of the volume up and volume down buttons.

[0061] In some embodiments, as Figure 18 shown, array modules 2 are provided on the volume up and volume down keys of the volume button, and a queue module 1 is provided on the power button. The combination of the two array modules 2 and the volume button is compatible with the button arrangement of the existing mobile phone, and double fingerprint recognition can be realized, achieving higher fingerprint application flexibility and security level. Or, as Figure 19 shown, the two array modules 2 can also be provided on the volume up and power buttons, and the queue module 1 is provided on the volume down, that is, the queue module 1 is provided between the two array modules 2. Or, as Figure 20As shown, two queue modules 1 and one array module 2 can also be set. Among them, the array module 2 is set between the two queue modules 1. Optionally, the two queue modules 1 can be set on the volume up and power keys, and the middle array module 2 is set on the volume down key. The volume down key also serves as a fingerprint recognition key for fingerprint recognition.

[0062] Optionally, multiple ultrasonic modules can be electrically connected to the controller of the electronic device respectively. Or, when the array module 2 and the queue module 1 are set at the same time, the queue module 1 can be electrically connected to the array module 2. The array module 2 processes the detection signals of the queue module 1 and then transmits them to the controller.

[0063] In some embodiments, the ultrasonic module only includes the queue module 1, which is set on the volume keys and the power key, so that the volume keys and the power key simultaneously have the function of sliding touch control. Or, as Figure 16 shown, the ultrasonic module only includes the array module 2, which is set on the volume keys and the power key, so that the volume keys and the power key simultaneously have the functions of sliding touch control and fingerprint recognition.

[0064] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and simple improvements made to the substantial content of the present application shall be included in the protection scope of the present application.

[0065] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0066] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the description of this specification, the descriptions referring to terms such as "this embodiment", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any at least one embodiment or example. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0068] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and simple improvements made to the substantial content of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A touch detection module, characterized in that, Including: A plurality of ultrasonic modules, which are arranged in a straight line. A gap is formed between the detection areas of two adjacent ultrasonic modules. Each ultrasonic module of the plurality of ultrasonic modules includes a substrate, on which a lower electrode layer is provided. The lower electrode layer includes a plurality of electrodes, and the area where the plurality of electrodes are located constitutes the detection area.

2. The touch detection module according to claim 1, wherein A piezoelectric layer covering the lower electrode is provided on the upper surface of the lower electrode, and a common electrode layer is covered on the piezoelectric layer.

3. The touch detection module according to claim 1, wherein The gap between the detection areas of two adjacent ultrasonic modules is 4 mm - 7 mm.

4. The touch detection module according to claim 3, wherein There is a physical gap between two adjacent ultrasonic modules.

5. The touch detection module according to claim 1, wherein The ultrasonic module includes a queue module, and the plurality of electrodes on the queue module are arranged in a straight-line queue.

6. The touch detection module according to claim 5, wherein, The operating frequency of the queue module is 1 MHz - 25 MHz.

7. The touch detection module according to claim 1, wherein The ultrasonic module includes an array module, and the plurality of electrodes on the array module are arranged in a multi-column array distribution.

8. The touch detection module according to claim 7, wherein, The operating frequency of the array module is 10 MHz - 25 MHz.

9. The touch detection module according to claim 3, wherein, The ultrasonic module includes a queue module and an array module, where the plurality of electrodes on the queue module are arranged in a straight-line queue; the plurality of electrodes on the array module are arranged in a multi-column array distribution.

10. The touch detection module according to claim 9, wherein, The operating frequency of the queue module is 1 MHz - 25 MHz, and the operating frequency of the array module is 10 MHz - 25 MHz.

11. The touch detection module according to claim 9, wherein, The queue module is electrically connected to the array module, and an output terminal is provided on the array module for connecting to a controller.

12. The touch detection module according to any one of claims 7-11, wherein There are two array modules.

13. An electronic device, characterized in that, Including a frame, on which the touch detection module according to any one of claims 1 - 12 is provided.

14. The electronic device according to claim 13, characterized in that, A button is provided on the frame, and the touch detection module is provided on the inner wall of the button.

15. The electronic device according to claim 14, wherein A plurality of buttons are provided, and one ultrasonic module is provided on the inner wall of each button.

Images