Positioning structure and electronic device

Abstract

The present disclosure provides a positioning structure and an electronic device, and relates to the technical field of electronics. The positioning structure comprises a first matching surface of a first component and a second matching surface of a second component. The first matching surface is provided with a first fluid, and the second matching surface is provided with a second adhesion area. The first fluid corresponds to the position of the second adhesion area. At least one of the first adhesion area and the second adhesion area is attached with a fluid droplet. The positioning structure is configured to, when the first matching surface and the second matching surface are close to each other, the fluid droplet is in contact with the first adhesion area and the second adhesion area respectively, and the first component and the second component are pulled to a target positioning state by the surface tension effect. The positioning structure of the present disclosure realizes accurate positioning of the first component and the second component before direct contact.

Description

Technical Field

[0001] This disclosure relates to the field of electronic technology, and in particular to a positioning structure and electronic device. Background Technology

[0002] In-display optical fingerprint scanners hide the fingerprint reader under the screen, collecting and matching the user's fingerprint information through the screen.

[0003] The fingerprint recognition module of the under-display optical fingerprint technology needs to be manually assembled into the mid-frame with high precision. In the current assembly process, due to the structural tolerance of the assembly equipment fixture and the error of the alignment equipment, the final assembly precision of the fingerprint recognition module is low. Summary of the Invention

[0004] This disclosure provides a positioning structure and electronic device that can solve the problem of low assembly accuracy of fingerprint recognition modules.

[0005] The technical solution is as follows: On the one hand, a positioning structure is provided, the positioning structure comprising: Located on the first mating surface of the first component, and located on the second mating surface of the second component; The first mating surface is provided with a first attachment area, and the second mating surface is provided with a second attachment area; The positions of the first attachment area and the second attachment area correspond; At least one of the first attachment region and the second attachment region is attached with fluid droplets; The positioning structure is configured such that when the first mating surface and the second mating surface are close to each other, the fluid droplets contact and adhere to the first attachment area and the second attachment area respectively, and use surface tension to pull the first component and the second component to the target positioning state.

[0006] In some embodiments, the contact angle θ between the first attachment region and the fluid droplet is less than or equal to 90°; The contact angle θ between the second attachment area and the fluid droplet is less than or equal to 90°.

[0007] In some embodiments, the first mating surface is provided with a flow guide groove, the flow guide groove extends to the location of the first attachment area, and the flow guide groove is used to discharge the fluid droplets when the first mating surface and the second mating surface are pressed together; And / or, The second mating surface is provided with a flow guide groove, which extends to the location of the second attachment area. The flow guide groove is used to discharge the fluid droplets when the first mating surface and the second mating surface are pressed together.

[0008] In some embodiments, the flow channel includes a first flow guide portion and a second flow guide portion; The first guide portion is arranged around the first attachment area or the second attachment area, and the second guide portion is connected to the first guide portion and extends to the outside of the first mating surface or the second mating surface.

[0009] In some embodiments, the first mating surface is further provided with a drain groove, the drain groove is connected to the guide groove on the first mating surface, and the drain groove is used to accommodate the fluid droplets flowing out of the guide groove; and / or, The second mating surface is also provided with a drain groove, which is connected to the guide groove on the second mating surface. The drain groove is used to accommodate the fluid droplets flowing out of the guide groove.

[0010] In some embodiments, both the first attachment region and the second attachment region are circular regions.

[0011] In some embodiments, the fluid droplets are emulsion fluids.

[0012] In some embodiments, the number of the first attachment region and the number of the second attachment region are each at least two; At least two first attachment regions are arranged at intervals on the first mating surface, and at least two second attachment regions are arranged at intervals on the second mating surface, with the positions of the first attachment regions and the second attachment regions corresponding one-to-one.

[0013] In some embodiments, at least two of the first attachment region arrays are arranged on the first mating surface, and at least two of the second attachment region arrays are arranged on the second mating surface.

[0014] On the other hand, an electronic device is provided, the electronic device including the positioning structure described in this disclosure, as well as a first component and a second component; The first mating surface of the first component and the second mating surface of the second component are mated and connected.

[0015] In some embodiments, at least one of the first mating surface and the second mating surface is provided with an adhesive layer; the first attachment area or the second attachment area is located on the outer surface of the adhesive layer; The first mating surface and the second mating surface come into contact with each other and press together to activate the adhesive layer and expel the fluid droplets.

[0016] The beneficial effects of the technical solution provided in this disclosure include at least the following: In the positioning structure disclosed herein, during the assembly and positioning process of the first component and the second component, fluid droplets are attached to the first attachment area of ​​the first mating surface and the second attachment area of ​​the second mating surface. The fluid droplets can be simultaneously adsorbed on the first attachment area and the second attachment area. Under the action of the surface tension of the liquid, the two mating surfaces are pulled towards the equilibrium point, causing the first component and the second component to move relative to each other. Since the positions of the first attachment area and the second attachment area correspond, the first component and the second component can be pulled to the target positioning state, thereby achieving precise positioning of the first component and the second component before direct contact. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of the positioning structure provided in the embodiments of this disclosure; Figure 2 This is a schematic diagram of the adhesion state between the fluid droplet and the first and second adhesion regions provided in the embodiments of this disclosure; Figure 3 This is a schematic diagram of the unbalanced surface tension of a fluid droplet provided in an embodiment of this disclosure; Figure 4 This is a surface tension force analysis diagram of the positioning structure provided in the embodiments of this disclosure; Figure 5 This is a schematic diagram showing that the surface tension of a fluid droplet has reached equilibrium according to an embodiment of this disclosure; Figure 6 This is a schematic diagram of the contact angle between the first or second attachment region and the fluid droplet provided in the embodiments of this disclosure; Figure 7 This is a schematic diagram of the shape of the first attachment region or the second attachment region provided in Embodiment 1 of this disclosure; Figure 8 This is a schematic diagram of the shape of the first attachment region or the second attachment region provided in Embodiment 2 of this disclosure; Figure 9 This is a schematic diagram of the shape of the first attachment region or the second attachment region provided in Embodiment 3 of this disclosure; Figure 10 This is a schematic diagram of the structure of the guide channel provided in the embodiment of this disclosure; Figure 11 This is an exploded view of the positioning structure provided in another embodiment of this disclosure.

[0019] The reference numerals in the figure are respectively: 1. First component; 11. First mating surface; 111. Mark line; 12. First attachment area; 2. Second component; 21. Second mating surface; 22. Second attachment area; 3. Flow guide channel; 31. First flow guide section; 32. Second flow guide section; 4. Drainage channel; 5. Fluid droplets. Detailed Implementation

[0020] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0021] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this disclosure and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0022] Unless otherwise defined, all technical terms used in the embodiments of this disclosure have the same meaning as commonly understood by one of ordinary skill in the art.

[0023] In related technologies, fingerprint modules need to be pasted and assembled in a specific area with high positioning accuracy. However, during the current assembly process, due to the structural tolerance of the assembly equipment fixture and the error of the alignment equipment, the final fingerprint module will be offset when pasted onto the middle frame. Furthermore, once the adhesive is activated, the fingerprint module cannot be moved, making it difficult to adjust the position of the fingerprint recognition module later.

[0024] Therefore, this disclosure provides a positioning structure that utilizes the surface tension of a liquid to pull the first component and the second component to move relative to each other, enabling the first component and the second component to be accurately positioned before they come into direct contact.

[0025] The electronic devices in the embodiments of this disclosure may be mobile phones, tablets, laptops, smart bracelets, smartwatches, smart helmets, smart glasses, etc., and the embodiments of this disclosure are not limited thereto.

[0026] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0027] Figure 1 This is an exploded view of the positioning structure provided in this embodiment. To clearly illustrate the structure of the first mating surface 11 of the first component 1, the first component 1 is flipped in the direction indicated by arrow a. When positioning the first component 1 and the second component 2 is required, the first component 1 is flipped so that the first mating surface 11 and the second mating surface 21 are opposite each other. For example, in the direction shown in the figure, the first mating surface 11 faces downwards, and the second mating surface 21 faces upwards.

[0028] On the one hand, combined with Figure 1 As shown, this embodiment provides a positioning structure, which includes: The first mating surface 11 of the first component 1 and the second mating surface 21 of the second component 2 are located therein; the first mating surface 11 is provided with a first attachment area 12 and the second mating surface 21 is provided with a second attachment area 22; the positions of the first attachment area 12 and the second attachment area 22 are corresponding; at least one of the first attachment area 12 and the second attachment area 22 is attached with a fluid droplet 5.

[0029] The positioning structure is configured such that when the first mating surface 11 and the second mating surface 21 approach each other, the fluid droplets 5 contact and adhere to the first attachment area 12 and the second attachment area 22 respectively, and use surface tension to pull the first component 1 and the second component 2 to the target positioning state.

[0030] In the positioning structure of this embodiment, during the assembly and positioning of the first component 1 and the second component 2, fluid droplets 5 are attached to the first attachment area 12 of the first mating surface 11 and the second attachment area 22 of the second mating surface 21. The fluid droplets 5 can be simultaneously adsorbed on the first attachment area 12 and the second attachment area 22. Under the action of the surface tension of the liquid, the two mating surfaces are pulled towards the equilibrium point, causing the first component 1 and the second component 2 to move relative to each other. Since the positions of the first attachment area 12 and the second attachment area 22 are corresponding, the first component 1 and the second component 2 can be pulled to the target positioning state, realizing the precise positioning of the first component 1 and the second component 2 before direct contact.

[0031] For example, fluid droplets 5 may be attached only to the first attachment region 12, or only to the second attachment region 22, or fluid droplets 5 may be attached to both the first attachment region 12 and the second attachment region 22.

[0032] The target positioning state can be understood as the first component 1 and the second component 2 being in the positioning position required for assembly or in the positioning position within the allowable error range.

[0033] In some possible implementations, the first mating surface 11 and the second mating surface 21 have auxiliary marks, which are made by printing or laser engraving.

[0034] For example, the auxiliary markings include, but are not limited to, adsorption markings and Mark lines, etc., wherein the adsorption markings are used to mark the position and area of ​​the first attachment area 12 or the second attachment area 22, etc., and the Mark lines are used to mark the target positioning positions of the first component 1 and the second component 2.

[0035] Taking the first component 1 as a fingerprint recognition module and the second component 2 as a mid-frame module as an example, the target positioning state of the first component 1 and the second component 2 is that the first component 1 is positioned at the installation position of the second component 2, the edge of the first component 1 coincides with the Mark line of the second component 2, or the entire first component 1 is located within the area marked by the Mark line.

[0036] It is understood that the positioning method disclosed herein is not limited to the assembly positioning of the fingerprint recognition module and the mid-frame module, but can be applied to the assembly positioning between any two components.

[0037] Furthermore, the positioning method disclosed herein can also be applied to other application scenarios that require precise positioning of two components, and is not limited to application scenarios for assembly purposes.

[0038] In some possible implementations, the first component 1 and the second component 2 are bonded together using an adhesive layer. This adhesive layer needs to be activated by pressure. Before the first component 1 and the second component 2 come into direct contact, i.e., before the adhesive layer is activated, their relative positions can be adjusted. However, once the adhesive layer is activated, they cannot be adjusted. Therefore, the positioning structure of this disclosure achieves self-positioning by utilizing the surface tension of the fluid droplet 5 before the first component 1 and the second component 2 come into contact. This structure has advantages such as simple structure, high positioning accuracy, and convenient operation.

[0039] In some other possible implementations, firstly, according to the design requirements, attachment points are marked on the first mating surface 11 and the second mating surface 21 respectively. The attachment points of the first mating surface 11 and the second mating surface 21 are aligned. When the two attachment points are aligned, the first component 1 and the second component 2 reach the target positioning state.

[0040] The first attachment region 12 is attached to the attachment point of the first mating surface 11, and the second attachment region 22 is attached to the attachment point of the second mating surface 21. Optionally, the first attachment region 12 and the second attachment region 22 are respectively spot-attached to the first mating surface 11 or the second mating surface 21 using automated equipment.

[0041] The following combination Figure 1-5 The working principle of the positioning structure disclosed herein is analyzed in detail: First, when the first mating surface 11 and the second mating surface 21 approach each other, and the first attachment region 12 and the second attachment region 22 approach each other, the fluid droplet 5 contacts the first attachment region 12 and the second attachment region 22 respectively, so that the upper end of the fluid droplet 5 is attached to the first attachment region 12 and the lower end is attached to the second attachment region 22, as shown. Figure 2 As shown.

[0042] At this time, since the first component 1 and the second component 2 have not reached the target positioning state, from Figure 2 It is clearly visible that the Mark line of the first component 1 is significantly shifted to the right relative to the second component 2. Therefore, the upper attachment position of the fluid droplet 5 is offset to the right compared to the lower attachment position.

[0043] like Figure 3 As shown, the surface tension of fluid droplet 5 is analyzed. σ1, σ2, σ3, and σ4 represent the surface tension vectors at the four corners of fluid droplet 5, respectively. The mechanical model of fluid droplet 5 is as follows: Figure 4 As shown, mechanical analysis reveals that the four surface tensions can combine to form a horizontal resultant force σ5 and a vertical resultant force σ6. The resultant forces in both the vertical and horizontal directions tend to move in the direction that forces the first attachment region 12 and the second attachment region 22 to align.

[0044] The vertical resultant force is responsible for pulling the two mating surfaces closer together in the vertical direction, while the horizontal resultant force straightens and aligns the two mating surfaces.

[0045] Ultimately, along the direction of the effective resultant force, the first component 1 and the second component 2 will move relative to each other, such as... Figure 4 As indicated by the middle arrow b, the force continues to decrease until the two attachment areas become increasingly aligned, and the resultant force decreases until it reaches zero, at which point the resultant force is in internal equilibrium. Figure 5 As shown, the edge of the first component 1 is located between the two Mark lines of the second component 2, which means that the first component 1 and the second component 2 have reached the target positioning state.

[0046] Combination Figure 6As shown, in some embodiments, the contact angle θ between the first attachment region 12 and the fluid droplet 5 is less than or equal to 90°; the contact angle θ between the second attachment region 22 and the fluid droplet 5 is less than or equal to 90°.

[0047] When the contact angle θ of the first attachment area 12 and the second attachment area 22 is less than or equal to 90°, the horizontal correction pull generated by the fluid droplet 5 is the largest, and the self-positioning effect of the first component 1 and the second component 2 is the best.

[0048] For example, the contact angle θ can be 90°, 80°, 70°, 60°, 50°, 40°, etc. Optionally, the contact angle θ between the first attachment region 12 and the fluid droplet 5, and the contact angle θ between the second attachment region 22 and the fluid droplet 5 can be equal or unequal.

[0049] In some possible implementations, the contact angle θ of the first attachment region 12 and the second attachment region 22 is less than or equal to 90° by using a high-tension fluid material and polishing the attachment position of the mating surface.

[0050] It needs to be explained that, Figure 6 The contact angles shown are measured in the scenario of a stationary fluid droplet 5. For example, the contact angle between the first attachment region 12 and the fluid droplet 5 is in the scenario where the fluid droplet 5 is only attached to the first attachment region 12, and the contact angle between the second attachment region 22 and the fluid droplet 5 is in the scenario where the fluid droplet 5 is only attached to the second attachment region 22.

[0051] The contact angle disclosed herein depends on the surface properties of the first attachment region 12 and the second attachment region 22, as well as the fluid characteristics of the fluid droplet 5.

[0052] Combination Figure 10 As shown, in some embodiments, the first mating surface 11 is provided with a guide groove 3, which extends to the location of the first attachment area 12. The guide groove 3 is used to discharge the fluid droplets 5 when the first mating surface 11 and the second mating surface 21 are pressed together.

[0053] In another embodiment, the second mating surface 21 is provided with a guide groove 3, which extends to the location of the second attachment area 22. The guide groove 3 is used to discharge the fluid droplets 5 when the first mating surface 11 and the second mating surface 21 are pressed together.

[0054] In this embodiment, after the fluid droplet 5 formed by the fusion of the first attachment region 12 and the second attachment region 22 completes the self-positioning of the first component 1 and the second component 2, it is necessary to discharge the fluid droplet 5. On the one hand, this maintains the cleanliness between the first mating surface 11 and the second mating surface 21 and ensures the mating performance. On the other hand, the discharge of the fluid droplet can realize the reuse of fluid materials, which is beneficial to reducing production costs.

[0055] Combination Figure 10 As shown, in some embodiments, the guide groove 3 includes a first guide portion 31 and a second guide portion 32; the first guide portion 31 is arranged around the first attachment region 12 or the second attachment region 22, and the second guide portion 32 communicates with the first guide portion 31 and extends to the outside of the first mating surface 11 or the second mating surface 21.

[0056] The fluid material is discharged from the fluid droplet 5 by using the first guide section 31 to surround the first attachment area 12 or the second attachment area 22, and using the second guide section 32 to guide the fluid material to the outside of the first mating surface 11 or the second mating surface 21.

[0057] For example, such as Figure 10 As shown, the first attachment area 12 or the second attachment area 22 is a circular droplet, the first guide part 31 is annular around the first attachment area 12 or the second attachment area 22, and the second guide part 32 is arranged radially to discharge the fluid material radially.

[0058] Combination Figure 11 As shown, in some embodiments, the first mating surface 11 is further provided with a drain groove 4, which is connected to the guide groove 3 on the first mating surface 11. The drain groove 4 is used to accommodate the fluid droplets 5 flowing out of the guide groove 3.

[0059] In some other embodiments, the second mating surface 21 is also provided with a drain groove 4, which is connected to the guide groove 3 on the second mating surface 21. The drain groove 4 is used to accommodate the fluid droplets 5 flowing out of the guide groove 3.

[0060] In this embodiment, the fluid material containing the fluid droplets 5 is collected by the discharge channel 4 connected to the guide channel 3, which facilitates the collection and recycling of the fluid material and reduces production costs.

[0061] Combination Figure 7 , 8 As shown, in some embodiments, both the first attachment region 12 and the second attachment region 22 are circular. By using circular first attachment regions 12 and 22, and ensuring that the fluid droplet 5 is also circular, the horizontal correction pull generated in the circumferential direction is the same, resulting in better self-positioning.

[0062] The circular first attachment area 12 and the second attachment area 22 conform to the basic physical properties of fluids and facilitate the addition and attachment of fluid droplets 5, thus reducing the application difficulty of the positioning structure in this embodiment.

[0063] In other possible implementations, the shapes of the first attachment region 12 and the second attachment region 22 include, but are not limited to, various shapes such as circles, elongations, and combinations thereof. For example... Figure 9As shown, the first attachment area 12 or the second attachment area 22 is composed of a circle and a strip shape, respectively.

[0064] It should be understood that the shapes of the first attachment region 12 and the second attachment region 22 of this disclosure can be reasonably selected according to different mating surface conditions, and this disclosure does not limit them.

[0065] In some embodiments, the fluid droplet 5 is an emulsion fluid.

[0066] The function of an emulsion is to reduce the unbalanced surface tension of the product when there is a deviation between two contact surfaces. The surface tension tends to pull the two attachment points together to achieve a balance of surface tension forces.

[0067] An emulsion is a dispersion system composed of two immiscible liquids, that is, a mixture formed by one liquid being dispersed in the form of small droplets in another liquid.

[0068] Combination Figure 7-9 As shown, in some embodiments, the number of first attachment regions 12 and second attachment regions 22 are at least two; at least two first attachment regions 12 are arranged at intervals on the first mating surface 11, and at least two second attachment regions 22 are arranged at intervals on the second mating surface 21, and the positions of the first attachment regions 12 and the second attachment regions 22 correspond one-to-one.

[0069] Using at least two first attachment areas 12 and second attachment areas 22 for self-positioning is beneficial to improving the automatic positioning accuracy of the first component 1 and the second component 2.

[0070] At least two first attachment regions 12 and second attachment regions 22 respectively form multiple fluid droplets 5, thereby generating multiple horizontal correction tensions, which improves the correction capability of the positioning structure of this disclosure and improves the self-positioning efficiency.

[0071] For example, the number of the first attachment region 12 and the second attachment region 22 may be two, three, four, etc.

[0072] refer to Figure 8 , 9 As shown, at least two first attachment regions 12 and second attachment regions 22 can be arranged in various ways, and can be reasonably arranged according to the actual situation of the mating surfaces.

[0073] In other embodiments, at least two first attachment regions 12 are arrayed on the first mating surface 11, and at least two second attachment regions 22 are arrayed on the second mating surface 21.

[0074] By utilizing the array-arranged first attachment area 12 and second attachment area 22, the horizontal correction pull directions of all fluid droplets 5 can be made basically parallel, thereby improving the positioning effect of the positioning structure in this embodiment.

[0075] In some possible implementations, only the second mating surface 21 is provided with a guide channel 3 and a drain channel 4. The guide channel 3 is arranged in a grid pattern with the second attachment area 22, and the drain channel 4 surrounds the second mating surface 21 and is connected to the guide channel 3 extending to the periphery of the second mating surface 21.

[0076] On the other hand, combining Figure 1 As shown, this embodiment provides an electronic device, which includes the positioning structure of this disclosure, as well as a first component 1 and a second component 2; the first mating surface 11 of the first component 1 and the second mating surface 21 of the second component 2 are mated and connected.

[0077] The electronic device in this embodiment adopts the positioning structure disclosed herein and has all the beneficial technical effects of all embodiments herein.

[0078] The terminal devices in this embodiment include portable terminal devices, such as smartphones, tablets, MP3 players (Moving Picture Experts Group Audio Layer III), MP4 players (Moving Picture Experts Group Audio Layer IV), laptops, or desktop computers, as well as other products such as electric shavers, electric toothbrushes, point-of-service terminals, wearable devices, and automotive, medical, and industrial products.

[0079] In some embodiments, an adhesive layer is provided on at least one of the first mating surface 11 and the second mating surface 21; the first attachment region 12 or the second attachment region 22 is located on the outer surface of the adhesive layer; the first mating surface 11 and the second mating surface 21 contact each other and press together to activate the adhesive layer and discharge the fluid droplets 5.

[0080] Therefore, in the electronic device of this embodiment, the first mating surface 11 and the second mating surface 21 are bonded together using an adhesive layer. During the process of the first mating surface 11 and the second mating surface 21 pressing against each other to activate the adhesive layer, the fluid droplets 5 are squeezed out together, thereby realizing a continuous operation of positioning and bonding.

[0081] For example, the adhesive layer is a double-sided adhesive material.

[0082] Taking the first component 1 as a fingerprint recognition module and the second component 2 as a mid-frame as an example, the assembly method of the electronic device in this embodiment includes: S1, add fluid droplets 5 to the first attachment area 12 of the first mating surface 11 of the fingerprint recognition module, and add fluid droplets 5 to the second attachment area 22 of the second mating surface 21 of the middle frame.

[0083] S2, after pre-aligning the fingerprint recognition module with the mid-frame, release the fingerprint recognition module.

[0084] S3, the fluid droplets 5 on the first attachment area 12 and the fluid droplets 5 on the second attachment area 22 come into contact and fuse. The fluid droplets 5 contact and attach with the first attachment area 12 and the second attachment area 22 respectively, generating a horizontal correction pulling force to pull the fingerprint recognition module to self-position relative to the middle frame.

[0085] S4. Use a detection device to measure the positioning deviation between the fingerprint recognition module and the mid-frame. If the positioning deviation exceeds the threshold, return to step S2; if the positioning deviation is less than the threshold, proceed to step S5.

[0086] S5 uses a pressing tool to press the fingerprint recognition module downwards.

[0087] S6, the fluid material of the fluid droplet 5 flows into the discharge tank 4 through the guide channel 3, and the fluid material in the discharge tank 4 is recycled.

[0088] S7, continue pressing down and use a pressure holding tool to hold the pressure until the adhesive layer is activated, and the fingerprint recognition module and the mid-frame are successfully bonded and assembled.

[0089] The assembly method of this embodiment differs most from conventional designs in that it adds an automatic tension correction position function. If the measurement positioning error exceeds the threshold, the fingerprint recognition module can be repositioned and the emulsion can be re-injected to release the tension and automatically correct the alignment. It can be adjusted multiple times before pressing and activating the double-sided adhesive, which helps to reduce the rework rate.

[0090] In some possible implementations, the electronic device may include radio frequency (RF) circuitry, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a Wi-Fi module, a processor including one or more processing cores, and a power supply, among other components.

[0091] It should be noted that in this article, "several" and "at least one" refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0092] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0093] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0094] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this disclosure.

[0095] The above description is merely an embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A positioning structure, characterized in that, The positioning structure includes: The first mating surface (11) is located on the first component (1), and the second mating surface (21) is located on the second component (2); The first mating surface (11) is provided with a first attachment area (12), and the second mating surface (21) is provided with a second attachment area (22); the positions of the first attachment area (12) and the second attachment area (22) correspond to each other; At least one of the first attachment region (12) and the second attachment region (22) is attached with fluid droplets (5); The positioning structure is configured such that when the first mating surface (11) and the second mating surface (21) are close to each other, the fluid droplets (5) contact and adhere to the first attachment area (12) and the second attachment area (22) respectively, and use surface tension to pull the first component (1) and the second component (2) to the target positioning state. The first mating surface (11) is provided with a guide groove (3), which extends to the location of the first attachment area (12). The guide groove (3) is used to discharge the fluid droplets (5) when the first mating surface (11) and the second mating surface (21) are pressed together. And / or, The second mating surface (21) is provided with a guide groove (3), which extends to the location of the second attachment area (22). The guide groove (3) is used to discharge the fluid droplets (5) when the first mating surface (11) and the second mating surface (21) are pressed together. The guide groove (3) includes a first guide section (31) and a second guide section (32); the first guide section (31) is arranged around the first attachment area (12) or the second attachment area (22), and the second guide section (32) communicates with the first guide section (31) and extends to the outside of the first mating surface (11) or the second mating surface (21).

2. The positioning structure according to claim 1, characterized in that, The contact angle θ between the first attachment area (12) and the fluid droplet (5) is less than or equal to 90°; The contact angle θ between the second attachment area (22) and the fluid droplet (5) is less than or equal to 90°.

3. The positioning structure according to claim 1, characterized in that, The first mating surface (11) is also provided with a drain groove (4), which is connected to the guide groove (3) on the first mating surface (11). The drain groove (4) is used to accommodate the fluid droplets (5) flowing out of the guide groove (3). and / or, The second mating surface (21) is also provided with a drain groove (4), which is connected to the guide groove (3) on the second mating surface (21). The drain groove (4) is used to accommodate the fluid droplets (5) flowing out of the guide groove (3).

4. The positioning structure according to claim 1, characterized in that, Both the first attachment area (12) and the second attachment area (22) are circular areas.

5. The positioning structure according to claim 1, characterized in that, The fluid droplet (5) is an emulsion fluid.

6. The positioning structure according to claim 1, characterized in that, The number of the first attachment region (12) and the second attachment region (22) are both at least two; At least two first attachment regions (12) are arranged at intervals on the first mating surface (11), and at least two second attachment regions (22) are arranged at intervals on the second mating surface (21), and the positions of the first attachment regions (12) and the second attachment regions (22) correspond one-to-one.

7. The positioning structure according to claim 6, characterized in that, At least two of the first attachment regions (12) are arranged in an array on the first mating surface (11), and at least two of the second attachment regions (22) are arranged in an array on the second mating surface (21).

8. An electronic device, characterized in that, The electronic device includes the positioning structure according to any one of claims 1-7, and the first component (1) and the second component (2); The first mating surface (11) of the first component (1) and the second mating surface (21) of the second component (2) are mated together.

9. The electronic device according to claim 8, characterized in that, An adhesive layer is provided on at least one of the first mating surface (11) and the second mating surface (21); the first attachment area (12) or the second attachment area (22) is located on the outer surface of the adhesive layer; The first mating surface (11) and the second mating surface (21) come into contact with each other and press together to activate the adhesive layer and discharge the fluid droplets (5).

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