A method and system for identifying the fitting state of a curved display screen and a cover plate

Abstract

The present application relates to a method and a system for identifying the fitting state of a curved display screen and a cover plate. The method includes: after the central control console receives the confirmation adsorption signal of the adsorption mechanism of the lower fixture, acquiring the image of the curved display screen captured by the first camera, where the image of the curved display screen includes the image of a preset marking pattern on the curved display screen; after the central control console receives the confirmation adsorption signal of the adsorption mechanism of the upper fixture, acquiring the fitting image captured by the first camera, where the fitting image includes the image of the preset marking pattern on the cover plate overlapping with the preset marking pattern on the curved display screen; calculating the coincidence degree between the fitting image and the image of the curved display screen according to a preset calculation rule; comparing the coincidence degree with a preset standard value, and if the coincidence degree is not less than the preset standard value, determining that the curved display screen and the cover plate are centered and aligned. The effect of the present application is to improve the overall yield rate after the cover plate and the curved display screen are fitted.

Description

Technical Field

[0001] The present invention relates to the technical field of curved screens, and in particular, to a method and a system for identifying the fitting state of a curved display screen and a cover plate. Background Art

[0002] At present, devices with display functions such as computers and televisions are often equipped with liquid crystal display screens. With the continuous development of technology, curved screens have become very popular display screens in recent years due to their unique beauty. A curved screen is assembled by multiple curved functional screens. During the processing, a suitable transparent cover plate needs to be attached to the outer surface of the curved display screen to protect the curved display screen.

[0003] In the related art, the clamping device for realizing the fitting between the curved display screen and the cover plate mainly includes a support table, a lower clamp, an upper clamp, a lifting mechanism, and two adsorption mechanisms. The lower clamp is fixedly arranged on the upper surface of the support table. A circular arc convex surface is formed at the top of the lower clamp. The upper clamp is arranged on the lifting mechanism. The lifting mechanism is used to drive the upper clamp to lift and lower in the vertical direction, and the upper clamp is located directly above the lower clamp. A circular arc concave surface is formed at the bottom of the upper clamp. One of the adsorption mechanisms is installed on the upper clamp, and the other adsorption mechanism is installed on the lower clamp. When attaching the cover plate to the curved display screen, the worker first adsorbs the curved display screen on the circular arc convex surface of the lower clamp, so that the straight edges on both opposite sides of the curved display screen are in contact with the upper surface of the support table, and the arc edges on both opposite sides of the curved display screen are in contact with the circular arc convex surface. Then, the worker adjusts the position of the cover plate on the upper clamp by experience and uses the adsorption mechanism to adsorb the cover plate on the circular arc concave surface of the upper clamp. Then, OCA glue is coated on the peripheral side of the upper surface of the curved display screen, and then the lifting mechanism is used to drive the upper clamp to move vertically downward until the cover plate is attached to the curved display screen.

[0004] In the process of implementing the present application, the inventors found that the above technology has at least the following problems: Since the worker attaches the cover plate to the circular arc concave surface of the upper clamp by experience, there is a possibility of relative misalignment between the cover plate and the curved display screen during the attachment, that is, it is difficult to ensure the centering alignment degree after the curved display screen and the cover plate are attached, resulting in a low overall yield rate after the cover plate and the curved display screen are attached. Summary of the Invention

[0005] In order to improve the problem of low overall yield rate after the cover plate and the curved display screen are attached, the present application provides a method and a system for identifying the fitting state of a curved display screen and a cover plate.

[0006] In a first aspect, the present application provides a method for identifying the fitting state of a curved display screen and a cover plate, adopting the following technical solution:

[0007] A method for identifying the fitting state of a curved display screen and a cover plate. The method is based on an assembly system, which includes a curved display screen, a cover plate, a console, a first camera, and a clamping device. Marking patterns are preset at the same positions on the side surfaces of the curved display screen and the cover plate that are away from each other. The center point of the marking pattern on the curved display screen is on the axis of the first camera, and the axis of the first camera is perpendicular to the upper surface of the support table in the clamping device. The method includes:

[0008] After the console receives the confirmation adsorption signal of the adsorption mechanism of the lower fixture, obtain the image of the curved display screen captured by the first camera. The image of the curved display screen includes the image of the preset marking pattern on the curved display screen;

[0009] After the console receives the confirmation adsorption signal of the adsorption mechanism of the upper fixture, obtain the fitting image captured by the first camera. The fitting image includes the image of the preset marking pattern on the cover plate overlapping with the preset marking pattern on the curved display screen;

[0010] According to the preset calculation rule, calculate the coincidence degree between the fitting image and the image of the curved display screen;

[0011] Compare the coincidence degree with the preset standard value. If the coincidence degree is not less than the preset standard value, it is determined that the curved display screen and the cover plate are centered and aligned.

[0012] By adopting the above technical solution, when the worker fixes the curved display screen on the lower fixture, the first camera captures the image of the preset marking pattern on the curved display screen. When the worker uses the adsorption mechanism on the upper fixture to adsorb the cover plate on the upper fixture, and then uses the first camera to capture the image of the preset marking image on the cover plate overlapping with the preset marking pattern on the curved display screen. If the coincidence degree between the fitting image and the image of the curved display screen is not less than the preset standard value, it indicates that the curved display screen and the cover plate are centered and aligned, thus ensuring the centering and alignment degree of the curved display screen and the cover plate, and further improving the overall yield rate after the cover plate and the curved display screen are fitted.

[0013] Optionally, the assembly system further includes a second camera, and the second camera is facing the arc edge of the cover plate. The step of determining that the curved display screen and the cover plate are centered and aligned if the coincidence degree is not less than the preset standard value includes:

[0014] If the coincidence degree is not less than the preset standard value, the console obtains and identifies the edge image captured by the second camera. The edge image includes the end face image of the cover plate;

[0015] Compare the curvature of the end face image of the cover plate with the preset standard curvature of the cover plate. If the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, it is determined that the curved surface display screen and the cover plate are centered and aligned.

[0016] By adopting the above technical solution, since there is a situation where the two sides of the cover plate adjacent to its own arc edge are separated from the upper fixture under the action of gravity, and at this time the coincidence degree may still be not less than the preset standard value, so the edge image captured by the second camera is used to compare the curvature of the end face image of the cover plate with the preset standard curvature of the cover plate. The preset standard curvature of the cover plate is the standard curvature during the processing of the cover plate. If the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, it indicates that the cover plate is attached to the upper fixture, thereby improving the accuracy of the centered alignment of the curved surface display screen and the cover plate.

[0017] Optionally, the center console obtains and identifies the edge image captured by the second camera, including: identifying the number of shadow areas in the fitting image and the curved surface display screen image. If the number of shadow areas in the fitting image is equal to the number of shadow areas in the curved surface display screen image, the center console obtains and identifies the edge image captured by the second camera; otherwise, a cleaning prompt is issued.

[0018] By adopting the above technical solution, since when there are other impurities such as dust on the curved surface display screen or the cover plate, there will be shadow areas other than the marked graphics in the curved surface display screen image or the fitting image, so the number of shadow areas in the fitting image is compared with the number of shadow areas in the curved surface display screen image. By default, the number of shadow areas in the curved surface display screen image is equal to the number of marked graphics. Then, when the number of shadow areas in the fitting image is equal to the number of shadow areas in the curved surface display screen image, it indicates that the cover plate and the curved surface display screen are centered and aligned, thereby improving the accuracy of the centered alignment determination of the cover plate and the curved surface display screen.

[0019] Optionally, the step of determining that the curved surface display screen and the cover plate are centered and aligned if the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate includes:

[0020] If the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, calculate the width value of the end face of the cover plate according to the preset shooting ratio;

[0021] Compare the width value of the end face of the cover plate with the actual thickness value of the cover plate. If the absolute value of the difference between the width value of the end face of the cover plate and the actual thickness value of the cover plate is less than the preset threshold value, it is determined that the cover plate and the curved surface display screen are centered and aligned.

[0022] By adopting the above technical solution, since the second camera is arranged on one side of one of the arc-shaped edges of the cover plate, and the side of the cover plate away from the second camera sags under its own gravity, resulting in the width value of the arc-shaped end face on the side of the cover plate close to the second camera being greater than the actual thickness value of the cover plate. Therefore, when the absolute value of the difference between the width value of the arc-shaped end face on the side of the cover plate close to the second camera and the actual thickness value of the cover plate is less than a preset threshold, it is determined that the cover plate is centered and aligned with the curved display screen, thereby improving the accuracy of determining the centering and alignment of the cover plate and the curved display screen.

[0023] Optionally, the center console obtaining and recognizing the edge image captured by the second camera includes: when the upper fixture descends to a preset height, the center console obtains and recognizes the edge image captured by the second camera.

[0024] By adopting the above technical solution, when the upper fixture descends to a preset height, the distance between the cover plate and the curved display screen is relatively close. Then, using the center console to obtain and recognize the edge image helps to improve the effectiveness of determining the centering and alignment of the cover plate and the curved display screen, and helps to reduce resource waste.

[0025] Optionally, the method further includes:

[0026] There are multiple preset marking graphics on the curved display screen and the cover plate, and the distribution positions of the multiple marking graphics do not coincide with each other. The first camera corresponds to the preset marking graphics one by one.

[0027] By adopting the above technical solution, setting multiple marking graphics helps to improve the accuracy of determining the centering and alignment of the cover plate and the curved display screen.

[0028] Optionally, calculating the coincidence degree of the fitting image and the curved display screen image according to the preset calculation rule includes:

[0029] Comparing the edge of the fitting image with the edge of the curved display screen image. If the edge of the fitting image completely coincides with the edge of the curved display screen image, the coincidence degree is 100%; otherwise, according to the preset calculation rule, calculate the coincidence degree of the fitting image and the curved display screen image.

[0030] By adopting the above technical solution, when determining whether the cover plate is centered and aligned with the curved display screen, first judge whether the edge of the fitting image completely coincides with the edge of the curved display screen image. If it completely coincides, it indicates that the coincidence degree is 100%; otherwise, calculate the coincidence degree of the fitting image and the curved display screen image according to the preset calculation rule to determine whether the cover plate is centered and aligned with the curved display screen.

[0031] In a second aspect, the present application provides an assembly system, adopting the following technical solution: The system includes:

[0032] The curved surface display screen and the cover plate to be bonded;

[0033] The central control console is configured to obtain the image of the curved surface display screen captured by the first camera after receiving the confirmation adsorption signal from the adsorption mechanism of the lower fixture. The image of the curved surface display screen includes the image of a preset marking pattern on the curved surface display screen;

[0034] The central control console is further configured to obtain the bonding image captured by the first camera after receiving the confirmation adsorption signal from the adsorption mechanism of the upper fixture. The bonding image includes the image of the preset marking pattern on the cover plate overlapping with the preset marking pattern on the curved surface display screen;

[0035] The central control console is further configured to calculate the coincidence degree between the bonding image and the image of the curved surface display screen according to a preset calculation rule;

[0036] The central control console is further configured to compare the coincidence degree with a preset standard value. If the coincidence degree is not less than the preset standard value, it is determined that the curved surface display screen and the cover plate are centered and aligned;

[0037] The first camera is configured to capture the image of the curved surface display screen and the bonding image;

[0038] The clamping device includes a support table, an upper fixture, a lower fixture, a lifting mechanism and an adsorption mechanism, and is used to fix the curved surface display screen and the cover plate.

[0039] By adopting the above technical solution, when the worker fixes the curved surface display screen on the lower fixture, since the center of the preset marking pattern on the curved surface display screen is on the axis of the first camera, and the axis of the first camera is perpendicular to the upper surface of the support table, the image of the curved surface display screen captured by the first camera can be used as a reference image. When the worker then adsorbs the cover plate on the upper fixture, the first camera is used to capture the bonding image, and then the bonding image is compared with the image of the curved surface display screen. If the coincidence degree between the bonding image and the image of the curved surface display screen is not less than the preset standard value, it is determined that the cover plate and the curved surface display screen are centered and aligned.

[0040] In a third aspect, the present application provides a computer device, adopting the following technical solution: including a memory and a processor, and a computer program capable of being loaded and executed by the processor to implement any one of the above-mentioned methods for identifying the bonding state of the curved surface display screen and the cover plate is stored on the memory.

[0041] By adopting the above technical solution, after the worker fixes the curved display screen on the lower fixture, since the center of the preset marking pattern on the curved display screen is on the axis of the first camera, and the axis of the first camera is perpendicular to the upper surface of the support table, the image of the curved display screen captured by the first camera can be used as a reference image. After the worker adsorbs the cover plate on the upper fixture, the first camera is used to capture the fitting image, and then the fitting image is compared with the image of the curved display screen. If the coincidence degree of the fitting image and the image of the curved display screen is not less than the preset standard value, it is determined that the cover plate and the curved display screen are centered and aligned.

[0042] In a fourth aspect, the present application provides a storage medium, adopting the following technical solution: storing a computer program that can be loaded and executed by a processor to perform any one of the above methods for identifying the fitting state of a curved display screen and a cover plate.

[0043] By adopting the above technical solution, after the worker fixes the curved display screen on the lower fixture, since the center of the preset marking pattern on the curved display screen is on the axis of the first camera, and the axis of the first camera is perpendicular to the upper surface of the support table, the image of the curved display screen captured by the first camera can be used as a reference image. After the worker adsorbs the cover plate on the upper fixture, the first camera is used to capture the fitting image, and then the fitting image is compared with the image of the curved display screen. If the coincidence degree of the fitting image and the image of the curved display screen is not less than the preset standard value, it is determined that the cover plate and the curved display screen are centered and aligned.

[0044] In summary, the present application includes at least one of the following beneficial technical effects:

[0045] 1. Since both the curved display screen and the cover plate have a certain curvature and flexibility, the coincidence degree of the marking pattern on the curved display screen and the corresponding marking pattern on the cover plate is used to determine whether the cover plate and the curved display screen are centered and aligned, which saves time and effort; and helps to improve the accuracy of determining the centering and alignment of the cover plate and the curved display screen, thereby improving the overall yield rate after the cover plate and the curved display screen are fitted.

[0046] 2. Considering that when the two opposite straight edges of the cover plate collapse downward, there is also a possibility that the coincidence degree is not less than the preset standard value. Therefore, the second camera is used to capture the arc edge of one end of the cover plate, and then the curvature of the cover plate is calculated based on the edge image, and the calculated curvature is compared with the preset standard curvature of the cover plate. When the two are equal, it indicates that the cover plate is fitted with the upper fixture, thereby improving the accuracy of determining the centering and alignment of the cover plate and the curved display screen.

[0047] 3. By default, the number of shadow regions in the image of the curved display screen is equal to the number of preset marking patterns. When the number of shadow regions in the fitting image is different from the number of shadow regions in the image of the curved display screen, it indicates that there are impurities such as dust on the cover plate, and a cleaning prompt is issued.

[0048] 4. When the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, use the second camera to obtain the edge image of the cover plate, calculate the width value of the end face of the cover plate according to the preset shooting ratio, and then compare the width value of the end face of the cover plate with the actual thickness value of the cover plate. If the absolute value of the difference between the width value of the end face of the cover plate and the actual thickness value of the cover plate is less than the preset threshold, it is determined that the cover plate is centered and aligned with the curved surface display screen, further improving the accuracy of the determination. Description of the Drawings

[0049] Figure 1 It is a schematic diagram of the scene architecture of the assembly system in the embodiment of the present application.

[0050] Figure 2 It is a flowchart of the method for identifying the fitting state of the curved surface display screen and the cover plate in the embodiment of the present application. Detailed Description of the Embodiment

[0051] The following will further describe the present application in detail Figure 1-2 with reference to the accompanying drawings.

[0052] The embodiment of the present application discloses a method for identifying the fitting state of a curved surface display screen and a cover plate. This method can be applied in an assembly system, and the assembly system is a system that can be applied in the processing process of a curved surface screen. As Figure 1 shown, the assembly system may include a clamping device, a central control console, a first camera, and a second camera. Among them, the clamping device includes a support table, a lower clamp, an upper clamp, a lifting mechanism, and an adsorption mechanism. And the clamping device in the embodiment of the present application is the same as the clamping device in the prior art. The central control console is used to control the lifting mechanism to drive the upper clamp to lift in the vertical direction, control the adsorption mechanism to pick up and place the cover plate or the curved surface display screen, and determine whether the cover plate is centered and aligned with the curved surface display screen.

[0053] When processing the curved surface display screen and the cover plate, marking patterns are preset at the same positions on the curved surface display screen and the cover plate. The marking pattern can be a regular pentagon or a regular hexagon tearable sticker. When a worker adsorbs a curved surface display screen of the same batch and the same model on the lower clamp through the adsorption mechanism on the lower clamp, the center of the preset marking pattern on the curved surface display screen is on the axis of the first camera, and the axis of the first camera is perpendicular to the upper surface of the support table. The first camera and the second camera in the embodiment of the present application are preferably telecentric lenses. The second camera is directly opposite to the arc edge on one side of the cover plate. The first camera and the second camera are both installed on the lifting mechanism.

[0054] As Figure 2 shown, the method includes the following steps:

[0055] S100. After the central control console receives the confirmation adsorption signal of the adsorption mechanism of the lower fixture, obtain the curved display screen image captured by the first camera.

[0056] Specifically, after the worker places the curved display screen on the lower fixture, use the adsorption mechanism on the lower fixture to fix the curved display screen. After the worker confirms the adsorption, press the confirmation button in the adsorption mechanism so that the central control console receives the confirmation adsorption signal sent by the adsorption mechanism. At this time, the central control console obtains the curved display screen image captured by the first camera, and the curved display screen image includes the image of the preset marking pattern on the curved display screen.

[0057] S200. After the central control console receives the confirmation adsorption signal of the adsorption mechanism of the upper fixture, obtain the fitting image captured by the first camera.

[0058] Specifically, after the worker places the curved display screen on the lower fixture, then use the adsorption mechanism on the upper fixture to adsorb the cover plate. After the worker confirms the adsorption, press the confirmation button in the adsorption mechanism so that after the central control console receives the confirmation adsorption signal of the adsorption mechanism on the upper fixture, the central control console obtains the fitting image captured by the first camera, and the fitting image includes the image where the preset marking pattern on the cover plate overlaps with the preset marking pattern on the curved display screen.

[0059] S300. Calculate the coincidence degree between the fitting image and the curved display screen image according to the preset calculation rules.

[0060] Specifically, the central control console first compares the edge of the fitting image with the edge of the curved display screen image. Since the curved display screen image is used as the reference standard, the edge of the curved display screen image is the edge of the marking pattern. If the edge of the fitting image is completely coincident with the edge of the curved display screen image, the coincidence degree between the fitting image and the curved display screen image is 100%.

[0061] If the edge of the fitting image is not completely coincident with the edge of the curved display screen image, the central control console needs to calculate the coincidence degree between the fitting image and the curved display screen image according to the preset calculation rules.

[0062] When calculating, the central control console can calculate the area of the fitting image and the image of the curved display screen based on the existing image recognition algorithm, and then according to the preset coincidence degree calculation formula: Calculate the coincidence degree, where S1 is the area of the fitting image and S2 is the area of the curved display screen image. For example, when the area S1 of the fitting image is 10.05 cm 2 , and the area S2 of the curved display screen image is 10 cm 2 , the coincidence degree obtained according to the coincidence degree calculation formula is 95%.

[0063] In S400, the coincidence degree is compared with a preset standard value. If the coincidence degree is not less than the preset standard value, it is determined that the curved surface display screen and the cover plate are centered and aligned.

[0064] Specifically, in the embodiment of the present application, the preset standard value takes 95% as an example, which can be obtained by the manufacturer according to the processing data of the curved surface screens of the same model. When the coincidence degree is not less than the preset standard value, it indicates that the coincidence degree between the fitting image and the curved surface display screen image is relatively high, which can provide an accurate reference value for the determination of the centered alignment of the curved surface display screen and the cover plate.

[0065] Optionally, considering that when the arc-shaped edge of the cover plate collapses under its own gravity or when the suction force of the adsorption mechanism suddenly becomes insufficient, there is still a possibility that the coincidence degree is not less than the preset standard value, resulting in an error in the determination of the centered alignment of the curved surface display screen and the cover plate. Therefore, when the coincidence degree is not less than the preset standard value, the following processing can be selected when determining the centered alignment of the curved surface display screen and the cover plate:

[0066] When the coincidence degree is not less than the preset standard value, the central control console acquires and identifies the edge image captured by the second camera. If the curvature of the edge image is equal to the preset standard curvature of the cover plate, it is determined that the cover plate and the curved surface display screen are centered and aligned.

[0067] Among them, since the second camera is directly opposite to the end face of the arc-shaped end on one side of the cover plate, the edge image is the end face image of the arc-shaped end on one side of the cover plate. The preset standard curvature of the cover plate has been determined during the processing and forming of the cover plate, and the preset standard curvature of the cover plate can be pre-stored in the central control console.

[0068] Specifically, when the coincidence degree is not less than the preset standard value, the central control console calculates the curvature of the end face image of the cover plate through the image recognition system, and then compares the curvature with the preset standard curvature of the cover plate. If the curvature is equal to the preset standard curvature of the cover plate, it is determined that the curved surface display screen and the cover plate are centered and aligned.

[0069] Optionally, since there may be shadow areas in the fitting image and the curved surface display screen image due to the presence of dust and other impurities, there is still a possibility that the coincidence degree is not less than the preset standard value. Therefore, when the central control console acquires and identifies the edge image captured by the second camera, the following processing can be selected:

[0070] When the number of shadow areas in the fitting image is equal to the number of shadow areas in the curved surface display screen image, the central control console acquires and identifies the edge image captured by the second camera.

[0071] Specifically, after the worker places the curved surface display screens of the same batch and the same model on the lower fixture, it is defaulted that the number of shadow areas in the curved surface display screen image captured by the first camera is equal to the number of preset marked graphics on the curved surface display screen.

[0072] The center console identifies the number of shadow regions in the fitting image of the center console and the curved display screen image. If the number of shadow regions in the fitting image is equal to the number of shadow regions in the curved display screen image, the center console acquires and identifies the edge image captured by the second camera; otherwise, it indicates that there are impurities such as dust on the cover plate, and the center console issues a cleaning prompt.

[0073] Optionally, since the second camera is arranged on one side of one of the arc-shaped edges of the cover plate, and when the cover plate is under its own gravity or the adsorption force of the adsorption mechanism is insufficient on the side away from the second camera, one end of the cover plate away from the second camera collapses downward, making it possible that the curvature of the end face image of the cover plate is still equal to the preset standard curvature of the cover plate. Therefore, when the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, the following processing can be performed when it is determined that the curved display screen and the cover plate are centered and aligned: Calculate the width value of the end face of the cover plate. When the absolute value of the difference between the width value of the end face of the cover plate and the actual thickness value of the cover plate is less than the preset threshold, it is determined that the cover plate and the curved display screen are centered and aligned.

[0074] Wherein, the actual thickness value of the cover plate is the actual thickness value during the production of the cover plate, and this actual thickness value can be pre-stored in the center console.

[0075] Specifically, if the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, the center console calculates the width value of the end face of the cover plate according to the preset shooting ratio. When calculating, the center console calculates the shooting ratio based on the length of the arc-shaped edge of the cover plate in the end face image of the cover plate and the actual length of the arc-shaped edge of the cover plate, and then calculates the width value of the end face of the cover plate according to the width of the end face of the cover plate in the end face image of the cover plate and the shooting ratio.

[0076] Then compare the width value of the end face of the cover plate with the actual thickness value of the cover plate. If the absolute value of the difference between the width value of the end face of the cover plate and the actual thickness value of the cover plate is less than the preset threshold, it is determined that the cover plate and the curved display screen are centered and aligned.

[0077] Optionally, in order to reduce resource waste, when the center console acquires and identifies the edge image captured by the second camera, the following processing can be performed:

[0078] When the upper fixture descends to the preset height, the center console acquires and identifies the edge image captured by the second camera.

[0079] Specifically, the preset height can be 10 cm from the center of the upper surface of the lower fixture, that is, when the upper fixture descends until the center of its lower surface is 10 cm from the center of the upper surface of the lower fixture, the center console acquires and identifies the edge image captured by the second camera.

[0080] In another embodiment, in order to improve the accuracy and efficiency of determining the centered alignment between the cover plate and the curved display screen, the number of preset marking patterns on the curved display screen and the cover plate can be multiple, and the distribution positions of the multiple marking patterns do not overlap. Taking two marking patterns as an example in the embodiments of the present application, the number of corresponding first cameras is also two, and the first cameras correspond to the marking patterns one by one.

[0081] The implementation principle of the embodiments of the present application is as follows: After the console receives the confirmation adsorption signal from the adsorption mechanism on the lower fixture, it acquires the image of the curved display screen captured by the first camera. After receiving the confirmation adsorption signal from the adsorption mechanism on the upper fixture, it acquires the fitting image captured by the first camera at this time, and compares the fitting image with the image of the curved display screen. If the coincidence degree between the fitting image and the image of the curved display screen is not less than the preset standard value, it is determined that the cover plate and the curved display screen are centered and aligned, which helps to improve the accuracy of determining the centered alignment between the cover plate and the curved display screen, and thus improves the overall yield rate after the cover plate and the curved display screen are fitted.

[0082] Based on the above method, the embodiments of the present application also disclose an assembly system for assembling a curved screen. The assembly system includes:

[0083] A curved display screen and a cover plate to be fitted;

[0084] A console for acquiring the image of the curved display screen captured by the first camera after receiving the confirmation adsorption signal from the adsorption mechanism of the lower fixture;

[0085] It is also used to acquire the fitting image captured by the first camera after receiving the confirmation adsorption signal from the adsorption mechanism of the upper fixture;

[0086] It is also used to calculate the coincidence degree between the fitting image and the image of the curved display screen according to the preset calculation rule;

[0087] It is also used to compare the coincidence degree with the preset standard value. If the coincidence degree is not less than the preset standard value, it is determined that the curved display screen and the cover plate are centered and aligned;

[0088] A first camera for capturing the image of the curved display screen and the fitting image;

[0089] A second camera for capturing the end face of the arc edge of the cover plate;

[0090] A clamping device, including a support table, an upper fixture, a lower fixture, a lifting mechanism and an adsorption mechanism, for fixing the curved display screen and the cover plate.

[0091] The embodiments of the present application also disclose a computer device.

[0092] Specifically, the device includes a memory and a processor, and a computer program capable of being loaded and executed by the processor for the above-mentioned method for identifying the fitting state of a curved display screen and a cover plate is stored on the memory.

[0093] An embodiment of the present application also discloses a computer-readable storage medium.

[0094] Specifically, the computer-readable storage medium stores a computer program capable of being loaded and executed by a processor for the above-mentioned method for identifying the fitting state of a curved display screen and a cover plate. The computer-readable storage medium includes, for example: various media such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs that can store program codes.

[0095] The embodiments of the specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A method for identifying the fitting state of a curved display screen and a cover plate, characterized in that, the method is based on an assembly system, the assembly system includes a curved display screen, a cover plate, a central control console, a first camera, and a clamping device. Marking patterns are preset at the same positions on the side surfaces of the curved display screen and the cover plate that are away from each other. The center point of the marking pattern on the curved display screen is on the axis of the first camera, and the axis of the first camera is perpendicular to the upper surface of the support platform in the clamping device. The method includes: After the central control console receives the confirmation adsorption signal of the adsorption mechanism of the lower clamp, obtain the image of the curved display screen captured by the first camera. The image of the curved display screen includes the image of the preset marking pattern on the curved display screen; After the central control console receives the confirmation adsorption signal of the adsorption mechanism of the upper clamp, obtain the fitting image captured by the first camera. The fitting image includes the image of the overlapping of the preset marking pattern on the cover plate and the preset marking pattern on the curved display screen; Calculate the coincidence degree of the fitting image and the curved display screen image according to the preset calculation rule; Compare the coincidence degree with the preset standard value. If the coincidence degree is not less than the preset standard value, it is determined that the curved display screen and the cover plate are centered and aligned; Wherein, the assembly system further includes a second camera, and the second camera is directly opposite to the arc edge of the cover plate. The step of determining that the curved display screen and the cover plate are centered and aligned when the coincidence degree is not less than the preset standard value includes: If the coincidence degree is not less than the preset standard value, the central control console acquires and identifies the edge image captured by the second camera. The edge image includes the end face image of the cover plate; Compare the curvature of the end face image of the cover plate with the preset standard curvature of the cover plate. If the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, it is determined that the curved display screen and the cover plate are centered and aligned.

2. A method for identifying the fitting state of a curved display screen and a cover plate according to claim 1, characterized in that, the step that the central control console acquires and identifies the edge image captured by the second camera includes: Identify the number of shadow areas in the fitting image and the curved display screen image. If the number of shadow areas in the fitting image is equal to the number of shadow areas in the curved display screen image, the central control console acquires and identifies the edge image captured by the second camera; otherwise, a cleaning prompt is issued.

3. A method for identifying the fitting state of a curved display screen and a cover plate according to claim 1, characterized in that, the step of determining that the curved display screen and the cover plate are centered and aligned when the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate includes: If the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, calculate the width value of the end face of the cover plate according to the preset shooting ratio; Compare the width value of the end face of the cover plate with the actual thickness value of the cover plate. If the absolute value of the difference between the width value of the end face of the cover plate and the actual thickness value of the cover plate is less than the preset threshold value, it is determined that the cover plate and the curved display screen are centered and aligned.

4. A method for identifying the fitting state of a curved display screen and a cover plate according to claim 1, characterized in that, the center console obtains and identifies the edge image captured by the second camera, including: when the upper clamp descends to a preset height, the center console obtains and identifies the edge image captured by the second camera.

5. A method for identifying the fitting state of a curved display screen and a cover plate according to claim 1, characterized in that, the method further includes: there are multiple preset marking patterns on the curved display screen and the cover plate, and the distribution positions of the multiple marking patterns do not overlap each other, and the first camera corresponds to the preset marking patterns one by one.

6. A method for identifying the fitting state of a curved display screen and a cover plate according to claim 1, characterized in that, calculating the degree of coincidence between the fitting image and the curved display screen image according to a preset calculation rule includes: comparing the edge of the fitting image with the edge of the curved display screen image. If the edge of the fitting image completely coincides with the edge of the curved display screen image, the degree of coincidence is 100%; otherwise, according to the preset calculation rule, calculate the degree of coincidence between the fitting image and the curved display screen image.

7. An assembly system, characterized in that, the system includes: a curved display screen and a cover plate to be fitted, and preset marking patterns are provided at the same positions on the side surfaces of the curved display screen and the cover plate that are away from each other; a center console for obtaining a curved display screen image captured by a first camera after receiving a confirmation adsorption signal from the adsorption mechanism of the lower clamp, and the curved display screen image includes an image of a preset marking pattern on the curved display screen; the center console is further configured to obtain a fitting image captured by the first camera after receiving a confirmation adsorption signal from the adsorption mechanism of the upper clamp, and the fitting image includes an image in which a preset marking pattern on the cover plate overlaps with a preset marking pattern on the curved display screen; the center console is further configured to calculate the degree of coincidence between the fitting image and the curved display screen image according to a preset calculation rule; the center console is further configured to compare the degree of coincidence with a preset standard value. If the degree of coincidence is not less than the preset standard value, it is determined that the curved display screen and the cover plate are centered and aligned; a first camera for capturing a curved display screen image and a fitting image, and the center point of the marking pattern on the curved display screen is on the axis of the first camera; a clamping device, including a support table, an upper clamp, a lower clamp, a lifting mechanism and an adsorption mechanism, for fixing the curved display screen and the cover plate, and the axis of the first camera is perpendicular to the upper surface of the support table in the clamping device; wherein, the assembly system further includes a second camera, and the second camera is directed at the arc edge of the cover plate; the center console is further configured to, if the degree of coincidence is not less than the preset standard value, the center console obtains and identifies the edge image captured by the second camera, and the edge image includes an end face image of the cover plate; The center console is also used to compare the curvature of the end face image of the cover plate with a preset standard curvature of the cover plate. If the curvature of the end face image of the cover plate is equal to the preset standard curvature of the cover plate, it is determined that the curved surface display screen and the cover plate are centered and aligned.

8. A computer device, characterized in that: It includes a memory and a processor, and a computer program capable of being loaded and executed by the processor for the method for identifying the fitting state of the curved surface display screen and the cover plate according to any one of claims 1 to 6 is stored on the memory.

9. A computer-readable storage medium, characterized in that a computer program capable of being loaded and executed by the processor for the method for identifying the fitting state of the curved surface display screen and the cover plate according to any one of claims 1 to 6 is stored.

Images