Dispensing quality detection method, device and electronic equipment

Abstract

The application discloses a dispensing quality detection method and device and electronic equipment. The method comprises the following steps: obtaining a first image of a device to be detected after dispensing, wherein the first image comprises a dispensing area on the device to be detected; determining the similarity between the first image and a second image of the device to be detected before dispensing, wherein the second image comprises the dispensing area, at least one feature mark is arranged on the dispensing area, the second image comprises the at least one feature mark, and the area of the feature mark at least partially overlaps with the dispensing area; and determining whether the dispensing quality of the device to be detected is qualified according to the similarity between the first image and the second image. In this way, whether the dispensing quality is qualified can be determined based on the similarity between the feature mark before dispensing and the feature mark after dispensing. For example, the dispensing area is a dispensing area corresponding to dam glue, so that the method can be used to determine whether the dam glue is missing.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment assembly technology, and in particular relates to a method, apparatus and electronic equipment for dispensing quality inspection. Background Technology

[0002] Currently, electronic devices are trending towards larger screens, and with this trend, the assembly technology for displays is also constantly evolving. Taking curved-screen phones as an example, a curved-screen phone generally consists of a display screen, a mid-frame, and a back cover. The display screen and mid-frame are typically assembled together using adhesive.

[0003] Once the display screen and mid-frame are properly glued together, a seal is achieved, preventing the phone from being submerged in liquid. However, current display assembly processes make it difficult to effectively detect any glue leakage.

[0004] Therefore, how to detect whether there is any glue leakage during the assembly process of the display screen is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a method, apparatus, and electronic device for dispensing quality testing. The method can determine whether the dispensing quality of the device under test is qualified.

[0006] In a first aspect, this application provides a method for inspecting dispensing quality. The method includes: acquiring a first image of a device under test after dispensing, the first image including a dispensing area on the device under test; determining the similarity between the first image and the second image based on a second image of the device under test before dispensing, the second image including the dispensing area, the dispensing area having at least one feature identifier, the second image including the at least one feature identifier, the area of ​​the feature identifier at least partially overlapping the dispensing area; and determining whether the dispensing quality of the device under test is qualified based on the similarity between the first image and the second image.

[0007] In this way, the similarity between images before and after dispensing can be used to determine whether the dispensing quality is acceptable. For example, if the dispensing area corresponds to the dispensing area for the damming adhesive, this method can be used to determine whether there is any leakage of the damming adhesive.

[0008] In one possible implementation, determining whether the dispensing quality of the device under test is qualified based on the similarity between the first image and the second image includes: if the similarity between the first image and the second image is less than a first preset threshold, then the dispensing quality of the device under test is determined to be qualified; if the similarity between the first image and the second image is greater than or equal to the first preset threshold, then the dispensing quality of the device under test is determined to be unqualified.

[0009] For example, the dispensing area is the same as the dispensing area for the damming adhesive. Thus, if the similarity is less than a first preset threshold, it indicates that the damming adhesive dispensing is normal; if the similarity is greater than or equal to the first preset threshold, it indicates that the damming adhesive dispensing is abnormal.

[0010] In one possible implementation, determining the similarity between the first image and the second image includes: extracting a first contour of the feature identifier in the first image; extracting a second contour of the feature identifier in the second image; and determining the similarity between the first image and the second image based on the first contour and the second contour.

[0011] In one possible implementation, the dispensing area includes multiple sub-dispensing areas, wherein each sub-dispensing area is provided with at least one feature identifier; the step of determining whether the dispensing quality of the device under test is qualified based on the similarity between the first image and the second image includes: determining whether the dispensing quality of each sub-dispensing area is qualified based on the similarity between each sub-dispensing area in the first image and the second image.

[0012] In this way, the dispensing quality corresponding to each sub-dispensing path can be determined separately, so as to achieve precise detection of dispensing quality.

[0013] In one possible implementation, the device to be tested is the mid-frame of an electronic device, the mid-frame includes a sound outlet, and the dispensing area includes two sub-dispensing areas, which are respectively located on both sides of the sound outlet.

[0014] In one possible implementation, the feature identifier is one or more countersunk holes disposed along the dispensing area on the device under test.

[0015] In one possible implementation, the feature identifier is one or more patterns disposed on the device under test along the dispensing area.

[0016] Secondly, this application provides a dispensing quality detection device, the device including a data collector and a processor;

[0017] The collector is used to acquire a first image of the device under test after dispensing, the first image including the dispensing area on the device under test; the processor is used to determine the similarity between the first image and the second image based on a second image of the device under test before dispensing, the second image including the dispensing area, the dispensing area having at least one feature identifier, the second image including the at least one feature identifier, the area of ​​the feature identifier at least partially overlapping the dispensing area; and to determine whether the dispensing quality of the device under test is qualified based on the similarity between the first image and the second image.

[0018] Thirdly, this application provides an electronic device, the electronic device including a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program code, the computer program code including computer instructions, which, when the processor executes the computer instructions, cause the electronic device to perform the method as described in any of the first aspects.

[0019] Fourthly, this application provides a computer-readable storage medium storing a computer program or instructions that, when executed, perform the method described in any of the first aspects.

[0020] Fifthly, this application provides a computer program product comprising a computer program or instructions that, when executed on a computer, cause the computer to perform the method as described in any one of the first aspects.

[0021] Sixthly, this application provides an electronic device, including: a display screen, a mid-frame, and a back cover; the mid-frame is located between the display screen and the back cover; the mid-frame includes a middle plate and a frame; the frame has a sound outlet hole; the mid-frame and the display screen are bonded together using adhesive, sealant, and damming adhesive; wherein the adhesive is located on the surface of the middle plate, the sealant is disposed along the edge of the frame, and the damming adhesive is located on both sides of the sound outlet hole and fills the space between the adhesive and the sealant; wherein at least one feature mark is provided on the dispensing area corresponding to the damming adhesive, the feature mark at least partially overlaps with the dispensing area, and the area of ​​the at least one feature mark that overlaps with the dispensing area is covered by the damming adhesive.

[0022] In one possible implementation, the feature identifier is one or more countersunk holes disposed along the dispensing area.

[0023] In one possible implementation, the feature identifier is one or more patterns disposed along the dispensing area.

[0024] In summary, this application provides a method, apparatus, and electronic device for dispensing quality inspection. First, at least one feature identifier is provided on the dispensing area, wherein the area of ​​the feature identifier at least partially overlaps with the dispensing area. Then, before assembling the display screen and the mid-frame, a first image and a second image, including the dispensing area, are acquired before and after dispensing. The second image corresponding to the dispensing before dispensing includes the complete feature identifier. If dispensing is normal, the feature identifier is at least partially covered, and correspondingly, the feature identifier in the obtained first image is incomplete. Based on this, this application determines whether the dispensing quality of the device under test is qualified by calculating the similarity between the first image and the second image. If the similarity between the first image and the second image is less than a first preset threshold, the dispensing quality of the device under test is determined to be qualified; if the similarity between the first image and the second image is greater than or equal to the first preset threshold, the dispensing quality of the device under test is determined to be unqualified. Thus, the dispensing status of the dammed adhesive can be determined using the above dispensing quality inspection method. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This application provides a schematic diagram of the structure of an electronic device;

[0027] Figure 2 This is a schematic diagram of the structure of the middle frame provided in an embodiment of this application;

[0028] Figure 3 for Figure 1 Sectional view along line AA;

[0029] Figure 4 A flowchart of a dispensing process provided for an embodiment of this application;

[0030] Figure 5A This is a schematic diagram of another type of middle frame provided in an embodiment of this application;

[0031] Figure 5B for Figure 5A Enlarged view at point M;

[0032] Figure 6 A flowchart of a dispensing quality detection method provided in this application embodiment;

[0033] Figure 7 A flowchart of a dispensing process provided for an embodiment of this application;

[0034] Figure 8 To and Figure 5B The corresponding first image;

[0035] Figure 9 To and Figure 5B Another corresponding first image;

[0036] Figure 10 This is a schematic diagram of a dispensing quality testing device provided in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures

[0038] 10 - Electronic equipment; 20 - Dispensing equipment;

[0039] 11-Display screen, 12-Middle frame, 13-Back cover;

[0040] 21-Conveyor belt, 22-Dispensing inlet, 23-Dispensing outlet, 24-Dispensing station, 25-Data collector, 26-Alarm device;

[0041] 111-Cover plate, 112-Touch sensing layer, 113-LCD layer, 114-Backlight layer;

[0042] 121-Middle plate, 122-Frame, 123-Sound hole, 124-Glue application area, 125-Feature marking;

[0043] 1221 - Sealant, 1211 - Backing adhesive, 1222 - Damping adhesive. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] This application relates to an electronic device, which may be a mobile phone, tablet computer, personal digital assistant, laptop computer, or other electronic device with a display screen.

[0046] In the following embodiments, a mobile phone is used as an example for illustration.

[0047] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 1 As shown, the electronic device 10 includes a display screen 11, a mid-frame 12, and a back cover 13, wherein the mid-frame 12 is located between the display screen 11 and the back cover 13.

[0048] In this embodiment, the display screen 11 can be a curved screen, and the display screen 11 and the middle frame 12 can be assembled together by adhesive. In one possible implementation, adhesive is first applied to a preset position on the middle frame 12; then, the display screen 11 and the middle frame 12 are connected together using the applied adhesive.

[0049] The assembly process of the display screen 11 and the middle frame 12 will be described in detail below.

[0050] Figure 2 This is a schematic diagram of the structure of the middle frame provided in an embodiment of this application. For example... Figure 2 As shown, the middle frame 12 may include a middle plate 121 and a frame 122 surrounding the middle plate 121. The periphery of the middle plate 121 extends toward the frame 122 and is connected to the frame 122.

[0051] In one possible implementation, such as Figure 2 As shown, an adhesive backing 1211 can be provided on the surface of the middle plate 121, and a ring of sealant 1221 can be provided along the edge of the frame 122. In this way, the adhesive backing 1211 is located on the surface of the middle plate 121 and can be bonded to the inner surface of the display screen 11; the sealant 1221 is located on the edge of the frame 122 and can be sealed and bonded to the edge of the display screen 11.

[0052] Figure 3 for Figure 1 Sectional view along line AA. (See example) Figure 3 As shown, the display screen 11 includes a multi-layer structure. For example, from top to bottom, the display screen 11 may include: a cover plate 111, a touch sensing layer 112, a liquid crystal layer 113, and a backlight layer 114. Adhesive 1211 is connected to the backlight layer 114, and sealant 1221 is connected to the cover plate 111. Therefore, adhesive 1211 and sealant 1221 are not on the same plane, resulting in a gap between them.

[0053] Please combine Figure 2 A sound outlet 123 is provided on the frame 122, which can communicate with the side of the middle plate 121 where the adhesive 1211 is provided. To prevent external liquid from flowing into the phone through the sound outlet 123, this application provides a damming adhesive 1222 near the sound outlet 123. The damming adhesive 1222 is used to connect the adhesive 1211 and the sealant 1221 near the sound outlet 123, thereby filling the gap between the adhesive 1211 and the sealant 1221. In this way, the display screen 11 and the middle frame 12 are sealed together through the adhesive 1211, the sealant 1221 and the damming adhesive 1222, preventing external liquid from flowing into the phone through the sound outlet 123 and causing a risk of liquid immersion.

[0054] The middle frame 12 can be pre-installed with adhesive 1211 before leaving the factory, or it can be set during the assembly process of the display screen 11 and the middle frame 12. This application does not limit this.

[0055] For example, the adhesive backing 1211 can be double-sided adhesive, which is already included with the mid-frame 12 before it leaves the factory. In this way, the release liner on the adhesive backing 1211 can be used before assembling the display screen 11 and the mid-frame 12.

[0056] For example, the adhesive 1222 can be glue. Before assembling the display screen 11 and the middle frame 12, the adhesive 1211 is applied to the middle frame 12 in advance. Then, the inner surface of the display screen 11 is bonded to the middle plate 121 of the middle frame 12 using the adhesive 1211.

[0057] Figure 4 This is a flowchart illustrating a dispensing process provided in an embodiment of this application. Figure 4 As shown, the dispensing equipment 20 includes a conveyor belt 21, a dispensing inlet 22, a dispensing outlet 23, and a dispensing station 24.

[0058] The dispensing equipment 20 is used to apply sealant 1221 and damming adhesive 1222 to the mid-frame 12. The dispensing process is as follows: The mid-frame 12 with backing adhesive 1211 is conveyed from the dispensing inlet 22 to the dispensing outlet 23 of the dispensing equipment 20 via the conveyor belt 21. During the conveying process, after reaching the dispensing station 24, damming adhesive 1222 is first applied to the dispensing area corresponding to the damming adhesive on the mid-frame 12; then, sealant 1221 is applied to the dispensing area corresponding to the sealant. Thus, the mid-frame 12 conveyed from the dispensing outlet 23 includes backing adhesive 1211, damming adhesive 1222, and sealant 1221. Furthermore, the mid-frame 12 including backing adhesive 1211, damming adhesive 1222, and sealant 1221 can be assembled with the display screen 11.

[0059] When assembling the mid-frame 12 and the display screen 11, the pressure exerted by the display screen 11 on the sealant 1221 generally leaves residual sealant on the outer surfaces of both the assembled display screen 11 and the mid-frame 12. The presence of this residual sealant indicates whether there is any leakage of sealant 1221. As for the backing adhesive 1211, since it is already applied to the mid-frame 12 before entering the dispensing equipment 20, it is easy to determine whether any backing adhesive 1211 is missing.

[0060] However, regarding the dammed adhesive 1222, on the one hand, it cannot be observed after the middle frame 12 and the display screen 11 are assembled, therefore, it is impossible to determine whether the dammed adhesive 1222 is properly applied. On the other hand, even before assembling the middle frame 12 and the display screen 11, operators can visually inspect to determine whether the dammed adhesive 1222 is properly applied. However, because the area of ​​the dammed adhesive 1222 is very small, and the entire production line assembling the middle frame 12 and the display screen 11 operates at a high speed, it is difficult for operators to detect abnormalities in the application of the dammed adhesive 1222 in actual operation. If the abnormality in the application of the dammed adhesive 1222 is not detected, the assembled electronic device is at risk of liquid immersion. To solve this technical problem, embodiments of this application provide a method for detecting the application quality, which can determine whether the dammed adhesive 1222 is properly applied.

[0061] To implement the dispensing quality inspection method provided in the embodiments of this application, the middle frame 12 has been improved. Before describing the dispensing quality inspection method provided in the embodiments of this application, the improved middle frame 12 provided in the embodiments of this application will be described first.

[0062] Figure 5A This is a schematic diagram of the structure of a middle frame 12 provided in an embodiment of this application. Figure 5B for Figure 5A Enlarged view of point M in the middle frame. The improved middle frame in this embodiment is similar to the one described above. Figure 2 The middle frame is basically the same, the difference is that, for example, Figure 5A and Figure 5B As shown, in the improved middle frame 12 of this embodiment, at least one feature mark 125 is provided on the dispensing area 124 corresponding to the damming adhesive 1222, wherein the area of ​​the feature mark 125 at least partially overlaps with the dispensing area 124. Thus, before dispensing adhesive on the dispensing area 124, the feature mark 125 on the dispensing area 124 can be clearly seen; after dispensing adhesive on the dispensing area 124, the feature mark 125 may be completely or partially covered. Therefore, by comparing the similarity of the feature mark 125 on the dispensing area 124 before and after dispensing, the dispensing quality of the damming adhesive 1222 on the dispensing area 124 can be determined.

[0063] This application does not limit the specific implementation of the feature identifier 125. In one possible implementation, the feature identifier 125 may be one or more countersunk holes provided along the dispensing area 124; in another possible implementation, the feature identifier 125 may also be one or more patterns provided along the dispensing area 124.

[0064] For example, such as Figure 5A and 5BAs shown, the dispensing area 124 on the middle frame 12 includes two sub-dispensing areas, which are located on both sides of the sound outlet 123. Specifically, the sub-dispensing area on the left side of the sound outlet 123 has one circular countersunk hole and one square countersunk hole; the sub-dispensing area on the right side of the sound outlet 123 has two circular countersunk holes of different diameters. These one circular countersunk hole and one square countersunk hole on the left side of the sound outlet 123, and the two circular countersunk holes of different diameters on the right side of the sound outlet 123, serve as feature identifiers 125 on the dispensing area 124.

[0065] It should be noted that the shape of the countersunk hole is not limited in the embodiments of this application. For example, it can be a regular shape such as square or round, or it can be a countersunk hole of other irregular shape. If feature identifier 125 includes multiple countersunk holes, the multiple countersunk holes can be countersunk holes of the same or different shapes, and the multiple countersunk holes can be countersunk holes of the same or different sizes.

[0066] For example, the dispensing area 124 on the middle frame 12 includes two sub-dispensing areas, which are respectively located on both sides of the sound outlet 123. Specifically, a circular pattern and a square pattern are etched on the sub-dispensing area on the left side of the sound outlet 123; two circular patterns of different diameters are etched on the sub-dispensing area on the right side of the sound outlet 123. These one circular pattern and one square pattern on the left side of the sound outlet 123, and the two circular patterns of different diameters on the right side of the sound outlet 123, serve as feature identifiers 125 on the dispensing area 124.

[0067] It should be noted that the pattern selected for feature identifier 125 is not limited in this application embodiment. For example, it can be a regular shape such as a square or a circle, or it can be a pattern of other irregular shapes. If feature identifier 125 includes multiple patterns, the multiple patterns can be patterns of the same or different shapes, and the multiple patterns can be patterns of the same or different sizes.

[0068] It should also be noted that the feature identifier 125 in the embodiments of this application can also be a combination of countersunk holes and patterns. For example, a circular pattern and a square pattern are etched on the sub-dispensing area on the left side of the sound hole 123; two circular countersunk holes of different diameters are provided on the sub-dispensing area on the right side of the sound hole 123.

[0069] It should also be noted that in this embodiment, the area of ​​feature identifier 125 at least partially overlaps with the dispensing area 124. For example, after normal dispensing of adhesive into the dispensing area 124, the outer contour of feature identifier 125 can be completely covered by the damming adhesive 1222. As another example, after normal dispensing of adhesive into the dispensing area 124, the outer contour of feature identifier 125 can be partially covered by the damming adhesive 1222, while another portion of the outer contour of feature identifier 125 is not covered by the damming adhesive 1222 and remains exposed.

[0070] The dispensing detection method provided in the embodiments of this application will be described below.

[0071] Figure 6 This is a flowchart illustrating the dispensing quality inspection method provided in an embodiment of this application. Figure 6 As shown, the method may include the following steps:

[0072] Step S101: Obtain a first image of the device under test after dispensing, the first image including the dispensing area on the device under test.

[0073] The dispensing quality testing method provided in this application can be applied to any dispensing quality testing scenario, and this application does not limit it.

[0074] For example, in this embodiment, the device to be tested can be the mid-frame of an electronic device, such as the mid-frame 12 of the mobile phone in the above embodiment. The dispensing area can be the dispensing area 124 corresponding to the dammed adhesive 1222. The feature identifier 125 on the dispensing area 124 can be found in the above description of the mid-frame 12, and will not be repeated here.

[0075] Figure 7 This is a flowchart illustrating a dispensing process provided in an embodiment of this application. Figure 7 As shown, the dispensing equipment 20 includes a conveyor belt 21, a dispensing inlet 22, a dispensing outlet 23, a dispensing station 24, and a data acquisition device 25. The data acquisition device 25 is located between the dispensing station 24 and the dispensing outlet 23. In this way, the data acquisition device 25 can acquire images of the dispensing area on the device to be tested after dispensing at the dispensing station 24, and obtain a first image.

[0076] In practice, the device to be tested is placed on conveyor belt 21. Conveyor belt 21 may be equipped with a fixture for positioning the target device, ensuring consistency in the orientation of the target device during each dispensing operation, thereby improving dispensing efficiency and quality. Taking the middle frame 12 as an example, the middle frame 12 with backing adhesive 1211 is conveyed from the dispensing inlet 22 of the dispensing equipment 20 to a preset position on the dispensing station 24 via conveyor belt 21. The dispensing system at the dispensing station 24 sequentially applies damming adhesive 1222 and sealant 1221 to the middle frame 12. Then, the image acquisition device 25 captures an image of the dispensing area 124 of the damming adhesive 1222 on the dispensed middle frame 12, obtaining a first image. Finally, the dispensed middle frame 12 is conveyed out from the dispensing outlet 23 via conveyor belt 21, thus completing the dispensing operation.

[0077] It should be noted that, in this embodiment, the image acquisition device 25 can be located inside or outside the dispensing equipment 20; this application does not limit this. The image acquisition device 25 can be any electronic device with image acquisition capabilities, such as a camera.

[0078] It should also be noted that when the dispensing station 24 normally dispenses glue to the preset dispensing area 124, it typically dispenses glue continuously from one end of the dispensing area 124 to the other. Therefore, in order to improve the accuracy of detection, in this embodiment, the feature identifier 125 can be set at the end of the dispensing area 124. If the dispensing area includes multiple segments, the feature identifier 125 on each segment can be set at the end of the corresponding segment.

[0079] Step S102: Obtain a second image of the device under test before dispensing, the second image including the dispensing area on the device under test.

[0080] In this embodiment, an image including the dispensing area 124 can be acquired before dispensing the device under test to obtain a second image. At least one feature identifier 125 is provided on the dispensing area 124 in the second image, and the second image includes at least one feature identifier 125, the area of ​​the feature identifier 125 at least partially overlapping with the dispensing area.

[0081] It should be noted that the second image in the embodiments of this application can be pre-stored in an electronic device or can be acquired before each dispensing; this application does not limit this.

[0082] It should be noted that the dispensing area 124 in the embodiments of this application can be a continuous dispensing area or a dispensing area composed of multiple separate sub-dispensing areas. This application does not limit this.

[0083] It should also be noted that the above embodiments are merely illustrative examples of acquiring the first image first and then the second image, and do not imply a limitation on the execution order of steps S101 and S102. For example, this application may also acquire the second image first and then the first image. As another example, this application may also acquire the first image and the second image simultaneously.

[0084] Step S103: Based on the second image of the device under test before dispensing, determine the similarity between the first image and the second image.

[0085] The second image includes complete feature identifier 125. Therefore, in this embodiment of the application, the second image can be used as a reference image to calculate the similarity between the first image and the second image.

[0086] It should be noted that for devices under test of the same specifications, the same second image can be used as the reference image.

[0087] It should be understood that if the dispensing station 24 dispenses glue normally to the dispensing area 124, the feature marker 125 in the first image will be completely or partially covered by glue, resulting in a relatively low similarity between the first and second images. If the dispensing station 24 dispenses glue abnormally to the dispensing area 124, for example, if the dispensing station 24 does not dispense glue to the dispensing area 124 (i.e., glue is missed), the feature marker 124 in the first image will not be covered and will be identical to the feature marker in the first image, resulting in a relatively high similarity between the first and second images. Furthermore, if the dispensing station 24 does not dispense glue completely to the dispensing area 124, the feature marker 125 in the first image may not be covered or may be partially covered, resulting in a relatively high similarity between the first and second images.

[0088] For example, with Figure 5B As a reference image, Figure 8 To and Figure 5B The corresponding first image. For example... Figure 5B As shown, in the reference image, the complete feature marker 125 can be seen on the dispensing area 124. (As...) Figure 8 As shown, in the first image acquired, the feature marker 125 on the glue application area 124 can be seen, part of which is covered by glue and part of which is not covered by glue.

[0089] For example, Figure 9 To and Figure 5B Another type of first image. Figure 9 The dashed line indicates the covered feature identifier 125, such as... Figure 9 As shown in the first image, the feature marker 125 on the glue-dispensing area 124 is completely covered by glue.

[0090] Therefore, this application can determine whether the dispensing quality is qualified by determining the similarity of the feature identifiers in the first image and the second image.

[0091] Step S104: If the similarity between the first image and the second image is less than the first preset threshold, then the dispensing quality of the device to be tested is determined to be qualified.

[0092] Step S105: If the similarity between the first image and the second image is greater than or equal to the first preset threshold, then the dispensing quality of the device to be tested is determined to be unqualified.

[0093] In one possible approach, determining the similarity between a first image and a second image can be achieved by: firstly extracting a first contour of feature identifiers from the first image; then extracting a second contour of feature identifiers from the second image; and finally, determining the similarity between the first image and the second image based on the extracted first and second contours.

[0094] It should be noted that for each feature identifier, this application can extract a first contour and a second contour, and then determine the similarity between the first image and the second image based on the similarity between the first contour and the second contour of feature identifiers with the same position among all feature identifiers. Alternatively, this application can calculate the similarity value corresponding to each feature identifier for its corresponding first contour and second contour; then, using the calculated similarity values, calculate the overall similarity of the feature identifiers. Finally, the overall similarity of the feature identifiers is used as the similarity between the first image and the second image.

[0095] If the similarity between the first image and the second image is less than the first preset threshold, it indicates that the area covered by feature identifier 125 after dispensing is large enough to meet the dispensing quality requirements, and thus the dispensing quality is deemed acceptable. If the similarity between the first image and the second image is greater than or equal to the first preset threshold, it indicates that the area covered by feature identifier 125 after dispensing is too small or not covered at all, and thus the dispensing quality does not meet the requirements, and thus the dispensing quality is deemed unacceptable.

[0096] It should be noted that if the similarity is 100%, it indicates that there is a problem with glue dispensing, that is, the glue dispensing device 20 did not actually dispense glue to the glue dispensing area 124.

[0097] In one possible implementation, if the dispensing area 124 includes multiple sub-dispensing areas, wherein each sub-dispensing area is provided with one or more feature identifiers, then determining the similarity between the first image and the second image can also be achieved by: determining whether the dispensing quality of each sub-dispensing area is qualified based on the similarity between each sub-dispensing area in the first image and the second image.

[0098] For example, such as Figure 5BAs shown, the dispensing area 124 consists of two sub-dispensing areas located on both sides of the sound outlet 123, each sub-dispensing area having a corresponding feature identifier 125. This allows for the determination of the similarity between the feature identifier 125 located to the left of the sound outlet 123 in the first image and the feature identifier 125 located to the left of the sound outlet 123 in the second image, as well as the similarity between the feature identifier 125 located to the right of the sound outlet 123 in the first image and the feature identifier 125 located to the right of the sound outlet 123 in the second image. Finally, the similarity of the feature identifiers on each sub-dispensing area is calculated. Sub-dispensing areas with a similarity less than a second preset threshold are considered to have acceptable dispensing quality; sub-dispensing areas with a similarity greater than or equal to the second preset threshold are considered to have unacceptable dispensing quality.

[0099] This application does not limit the first preset threshold and the second preset threshold, wherein the first preset threshold and the second preset threshold may be the same or different. For example, both the first preset threshold and the second preset threshold are 60%.

[0100] Furthermore, if the dispensing is determined to be substandard, an alarm device 26 can be triggered to alert the operator that the dispensing on the current target inspection piece is substandard. The alarm device 26 can be installed on the dispensing equipment 20.

[0101] In summary, the dispensing quality detection method provided in this application firstly involves setting at least one feature identifier on the dispensing area, wherein the area of ​​the feature identifier at least partially overlaps with the dispensing area. Then, before assembling the display screen and the mid-frame, a first image and a second image, including the dispensing area, are acquired before and after dispensing. The second image corresponding to the dispensing before dispensing includes the complete feature identifier. If dispensing is normal, the feature identifier area is at least partially covered, and correspondingly, the feature identifier in the obtained first image is incomplete. Based on this, this application determines whether the dispensing quality is acceptable by calculating the similarity between the first image and the second image. If the similarity is less than a first preset threshold, the dispensing quality is determined to be acceptable; if the similarity is greater than or equal to the first preset threshold, the dispensing quality is determined to be unacceptable. Thus, the dispensing status of the dammed adhesive can be determined using the above dispensing quality detection method.

[0102] The various method embodiments described herein can be independent solutions or combinations based on internal logic, and all such solutions fall within the protection scope of this application.

[0103] It is understood that the methods and operations implemented by electronic devices in the above-described method embodiments can also be implemented by components (such as chips or circuits) that can be used in electronic devices.

[0104] The above embodiments describe the dispensing quality inspection method provided in this application. It is understood that, in order to achieve the above functions, the electronic device includes corresponding hardware structures and / or software modules to perform each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0105] The methods provided in the embodiments of this application have been described in detail above. The following, in conjunction with... Figure 10 The apparatus provided in the embodiments of this application is described in detail. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments. Therefore, for content not described in detail, please refer to the method embodiments above. For the sake of brevity, it will not be repeated here.

[0106] Figure 10 This is a schematic diagram of the structure of a dispensing quality inspection device provided in an embodiment of this application. In one embodiment, the electronic device can... Figure 10 The hardware device shown implements the corresponding function. For example... Figure 10 As shown, the device 1000 may include: a data acquisition unit 1001, a processor 1002, and a memory 1003. The data acquisition unit 1001 may be a device for receiving or acquiring images, such as a camera. The processor 1002 may include one or more processing units, such as an application processor, a modem processor, a graphics processor, an image signal processor, a controller, a video codec, a digital signal processor, a baseband processor, and / or a neural network processor. Different processing units may be independent devices or integrated into one or more processors. The memory 1003 is coupled to the processor 1002 and is used to store various software programs and / or multiple sets of instructions. The memory 1003 may include volatile memory and / or non-volatile memory.

[0107] The device 1000 can perform the operations described in the above method embodiments.

[0108] For example, in an optional embodiment of this application, the collector 1001 can acquire a first image of the device under test after dispensing, the first image including the dispensing area on the device under test; the processor 1002 can be used to determine the similarity between the first image and the second image based on a second image of the device under test before dispensing, the second image including the dispensing area, the dispensing area being provided with at least one feature identifier, the second image including the at least one feature identifier, the area of ​​the feature identifier at least partially overlapping the dispensing area; and determine whether the dispensing quality of the device under test is qualified based on the similarity between the first image and the second image.

[0109] In one possible implementation, the processor 1002 can be configured to determine that the dispensing quality of the device under test is qualified if the similarity between the first image and the second image is less than a first preset threshold; and to determine that the dispensing quality of the device under test is unqualified if the similarity between the first image and the second image is greater than or equal to the first preset threshold.

[0110] In one possible implementation, the processor 1002 can be used to extract a first contour of the feature identifier in the first image; extract a second contour of the feature identifier in the second image; and determine the similarity between the first image and the second image based on the first contour and the second contour.

[0111] In one possible implementation, the dispensing area includes multiple sub-dispensing areas, each of which has at least one feature identifier; the processor 1002 can be used to determine whether the dispensing quality of each sub-dispensing area is qualified based on the similarity between each sub-dispensing area in the first image and the second image.

[0112] In one possible implementation, the device to be tested is the mid-frame of an electronic device, the mid-frame includes a sound outlet, and the dispensing area includes two sub-dispensing areas, which are respectively located on both sides of the sound outlet.

[0113] In one possible implementation, the feature identifier is one or more countersunk holes disposed along the dispensing area on the device under test.

[0114] In one possible implementation, the feature identifier is one or more patterns disposed on the device under test along the dispensing area.

[0115] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware processor, or by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0116] It should be noted that the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by the integrated logic circuitry in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above methods.

[0117] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0118] According to the method provided in the embodiments of this application, the embodiments of this application also provide a computer program product, which includes: a computer program or instructions, which, when run on a computer, cause the computer to perform the method of any one of the embodiments of the method embodiments.

[0119] According to the method provided in the embodiments of this application, the embodiments of this application also provide a computer-readable storage medium storing a computer program or instructions that, when executed on a computer, cause the computer to perform the method of any one of the embodiments of the method.

[0120] According to the method provided in the embodiments of this application, the embodiments of this application also provide an electronic device, including a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program code, the computer program code including computer instructions, and when the processor executes the computer instructions, the electronic device performs the method of any one of the embodiments of the method embodiments.

[0121] Those skilled in the art will recognize that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0122] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0123] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0124] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0125] In addition, the functional modules in the various embodiments of this application can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit.

[0126] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0127] The dispensing quality inspection device, chip, computer storage medium, computer program product, and electronic device provided in the embodiments of this application are all used to execute the methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects corresponding to the methods provided above, and will not be repeated here.

[0128] It should be understood that in the various embodiments of this application, the execution order of each step should be determined by its function and internal logic, and the size of the step number does not mean the order of execution, and does not constitute a limitation on the implementation process of the embodiments.

[0129] The various parts of this specification are described in a progressive manner. Similar or identical parts between the various embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, the embodiments for the synchronization frame transmitting device, chip, computer storage medium, computer program product, and electronic device are basically similar to the method embodiments, so the descriptions are relatively simple, and relevant details can be found in the descriptions within the method embodiments.

[0130] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0131] The embodiments described above do not constitute a limitation on the scope of protection of this application.

Claims

1. A method for detecting the quality of adhesive dispensing, characterized in that, The method includes: At least one feature mark is provided in the dispensing area of ​​the device under test, wherein the device under test includes the mid-frame of an electronic device, the dispensing area is used to provide a first sealant, the first sealant is used to bond the device under test and the display screen of the electronic device, the display screen includes a curved screen, and when the device under test and the display screen are bonded, the first sealant is covered by the display screen and is not visible. The first sealant is applied to the dispensing area of ​​the device under test, wherein, if the dispensing is successful, the first sealant at least partially covers the feature mark. A first image is obtained after the device under test is dispensed with adhesive, and the first image is used to display the dispensing area of ​​the device under test after dispensing with adhesive. Based on the second image of the device under test before dispensing, the similarity between the feature identifiers of the first image and the second image is determined, wherein the second image is used to display the dispensing area of ​​the device under test before dispensing. Based on the similarity of the feature identifiers between the first image and the second image, it is determined whether the dispensing quality of the device under test is qualified.

2. The method according to claim 1, characterized in that, The step of determining whether the dispensing quality of the device under test is qualified based on the similarity of the feature identifiers of the first image and the second image includes: If the similarity between the feature identifiers of the first image and the second image is less than a first preset threshold, then the dispensing quality of the device to be tested is determined to be qualified. If the similarity between the feature identifiers of the first image and the second image is greater than or equal to the first preset threshold, then the dispensing quality of the device to be tested is determined to be unqualified.

3. The method according to claim 1, characterized in that, Determining the similarity of the feature identifiers of the first image and the second image includes: Extract the first contour of the feature identifier from the first image; Extract the second contour of the feature identifier from the second image; Based on the first contour and the second contour, the similarity of the feature identifiers of the first image and the second image is determined.

4. The method according to claim 1 or 3, characterized in that, The dispensing area includes multiple sub-dispensing areas, wherein each sub-dispensing area is provided with at least one feature identifier; The step of determining whether the dispensing quality of the device under test is qualified based on the similarity of the feature identifiers of the first image and the second image includes: Based on the similarity of the feature identifiers of each sub-dispensing region in the first image and the second image, it is determined whether the dispensing quality of each sub-dispensing region is qualified.

5. The method according to claim 4, characterized in that, The device under test is the mid-frame of an electronic device. The mid-frame includes a sound outlet. The dispensing area includes two sub-dispensing areas, which are located on both sides of the sound outlet.

6. The method according to claim 1, characterized in that, The feature identifier is one or more countersunk holes disposed along the dispensing area on the device under test.

7. The method according to claim 1, characterized in that, The feature identifier is one or more patterns disposed on the device under test along the dispensing area.

8. A dispensing quality detection device, characterized in that, The device includes a dispensing device and a processor; The dispensing device is used to dispense a first sealant into a dispensing area of ​​a device under test, wherein the dispensing area is provided with at least one feature mark, the device under test includes a mid-frame of an electronic device, the dispensing area is used to apply the first sealant, the first sealant is used to bond the device under test and the display screen of the electronic device, the display screen includes a curved screen, when the device under test and the display screen are bonded, the first sealant is obscured by the display screen and is not visible, and when the dispensing is successful, the first sealant at least partially covers the feature mark; The dispensing equipment includes a collector; The collector is used to acquire a first image of the device under test after dispensing adhesive, and the first image is used to display the dispensing area of ​​the device under test after dispensing adhesive. The processor is configured to determine the similarity between the feature identifiers of the first image and the second image based on a second image of the device under test before dispensing, wherein the second image is used to display the dispensing area of ​​the device under test before dispensing. The processor is further configured to determine whether the dispensing quality of the device under test is qualified based on the similarity of the feature identifiers of the first image and the second image.

9. An electronic device, characterized in that, include: The display screen, the mid-frame, and the back cover, wherein the display screen includes a curved screen; The middle frame is located between the display screen and the back cover, and the shape of the middle frame matches that of the display screen; The middle frame includes a middle plate and a side frame; The frame is provided with a sound outlet; The middle frame and the display screen are bonded together using adhesive backing, sealant, and damming adhesive; wherein, the adhesive backing is located on the surface of the middle plate, the sealant is provided along the edge of the frame, and the damming adhesive is located on both sides of the sound outlet and fills the space between the adhesive backing and the sealant. The dammed adhesive has at least one feature mark on the dispensing area corresponding to it. The dammed adhesive is used to bond the middle frame and the display screen. When the middle frame and the display screen are bonded, the dammed adhesive is obscured by the display screen and is not visible. The dammed adhesive at least partially covers the feature mark.

10. The electronic device according to claim 9, characterized in that, The feature identifier is one or more countersunk holes disposed along the dispensing area.

11. The electronic device according to claim 9, characterized in that, The feature identifier is one or more patterns set along the dispensing area.

Images