Inner and outer screen assembly process

Abstract

The application discloses an inner and outer screen assembling process and relates to the technical field of inner and outer screen assembling technology, wherein the inner and outer screen assembling process comprises the following steps: a first processing assembly pre-presses display flat cables, touch flat cables and an inner screen to obtain a first semi-finished product; a second processing assembly burns an OTP program into the first semi-finished product and checks whether the burned program is correct to obtain a second semi-finished product with a correct burned program; a third processing assembly press-bonds display flat cables and touch flat cables in the second semi-finished product with the inner screen to obtain a third semi-finished product; and a fourth processing assembly laminates the third semi-finished product with an outer screen to obtain a fourth semi-finished product. The technical scheme of the application can solve the problem that it is inconvenient to disassemble display flat cables or touch flat cables from the inner screen when repairing a product with a program burning error.

Description

Technical Field

[0001] This invention relates to the field of inner and outer screen assembly technology, and particularly to an inner and outer screen assembly process. Background Technology

[0002] The display part in electronic devices usually consists of an inner screen and an outer screen. The inner screen needs to have its program burned into the circuit during the assembly process.

[0003] Programming is often performed after the display and touch cables are fixed to the inner screen. At this point, damage to the display or touch cables can lead to programming errors. Because the connection points between the display and touch cables and the inner screen are fixed, it is inconvenient to remove the display or touch cables from the inner screen when repairing products with programming errors. Summary of the Invention

[0004] The main objective of this invention is to propose an assembly process for inner and outer screens, which aims to solve the problem that it is inconvenient to remove the display cable or touch cable from the inner screen when repairing products with programming errors.

[0005] To achieve the above objectives, the inner and outer screen assembly process proposed in this invention includes the following steps:

[0006] The first processing component pre-presses the display cable, touch cable, and inner screen to obtain the first semi-finished product;

[0007] The second processing component burns the OTP program into the first semi-finished product and checks whether the burning program is correct, thus obtaining a second semi-finished product with a correct burning program.

[0008] The third processing component presses the display cable and touch cable from the second semi-finished product with the inner screen to obtain the third semi-finished product;

[0009] The fourth processing component attaches the third semi-finished product to the outer screen to obtain the fourth semi-finished product.

[0010] In one embodiment, the inner and outer screen assembly line further includes a testing module; and before the step of the fourth processing component bonding the third semi-finished product to the outer screen to obtain the fourth semi-finished product, the following steps are also included:

[0011] The testing module performs FOG testing on the third semi-finished product.

[0012] In one embodiment, the fourth processing component includes a first bonding device and a vacuum bonding machine. The step of the fourth processing component bonding the third semi-finished product to the outer screen to obtain the fourth semi-finished product includes:

[0013] The first attaching device attaches a protective film to the front of the outer screen and an OCA to the back;

[0014] The vacuum laminating machine laminates the outer screen to the third semi-finished product via the OCA and performs vacuum defoaming on the laminated product.

[0015] In one embodiment, after the step of vacuum defoaming the bonded product, the method further includes:

[0016] The testing module performs FOG testing on the product after vacuum defoaming.

[0017] In one embodiment, the inner and outer screen assembly line further includes a fifth working component; after the step of the fourth processing component bonding the third semi-finished product to the outer screen to obtain the fourth semi-finished product, the line further includes:

[0018] The fifth working component loads the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product.

[0019] In one embodiment, the fifth working component includes a dispensing component and a second assembly component; the step of loading the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product includes:

[0020] The dispensing assembly dispenses adhesive onto the dispensing surface of the middle frame;

[0021] The second assembly component attaches the fourth semi-finished product to the adhesive surface.

[0022] In one embodiment, the inner and outer screen assembly line further includes a sixth working component, which includes a second attaching device and a bending device; prior to the step of loading the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product, the line further includes:

[0023] The second bonding device applies the fourth semi-finished product to the backing;

[0024] The bending device bends and attaches the display cable and the touch cable to the backing.

[0025] In one embodiment, the inner and outer screen assembly line further includes a detection module; the detection module is used to inspect the appearance of the inner screen, outer screen, middle frame, third semi-finished product, fourth semi-finished product, or fifth semi-finished product.

[0026] In one embodiment, the detection module includes a mounting frame, a driving component, a placement stage, and a camera assembly. The driving component is fixed to the mounting frame, and the placement stage is fixed to the driving component. The driving component is used to drive the placement stage to rotate. A placement area is provided on the placement stage. The camera assembly includes a camera, which is positioned facing the placement area.

[0027] In one embodiment, the placement platform has an installation groove inside, the top of the placement platform is a transparent structure, and the top of the placement platform is a placement area, and the top of the placement platform is provided with a negative pressure hole;

[0028] There are three cameras: a first camera, a second camera, and a third camera. The first camera is installed in the mounting slot, the second camera is located above the placement platform, and the third camera is located on the outer side of the placement platform.

[0029] The technical solution of this invention employs a first processing component to pre-press the display cable, touch cable, and inner screen to obtain a first semi-finished product. Pre-pressing involves connecting the cable and inner screen using adhesive. After pre-pressing, the OTP program is burned into the first semi-finished product. The program is then checked for correctness to obtain a second semi-finished product with a correctly burned program. Because the display cable and touch cable are pre-pressed with the inner screen (i.e., connected by adhesive), removing the display cable or touch cable from the inner screen is simple. It only requires heating the connection point to melt the adhesive, allowing for easy removal. This solves the problem in the prior art where it is inconvenient to remove the display cable or touch cable from the inner screen when repairing products with incorrect program burning. Attached Figure Description

[0030] 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 A process flow diagram of an embodiment of the inner and outer screen assembly process provided by the present invention;

[0032] Figure 2 This is a schematic diagram of a structure of an embodiment of the inner and outer screen assembly production line provided by the present invention;

[0033] Figure 3 This is a schematic diagram of a structure of an embodiment of the detection module in the inner and outer screen assembly production line provided by the present invention;

[0034] Figure 4 This is a schematic diagram of an embodiment of the second processing component in the inner and outer screen assembly production line provided by the present invention.

[0035] Explanation of icon numbers:

[0036] 100. First bonding machine; 200. First transport component; 300. Second bonding machine; 400. Press; 500. Vacuum bonding machine;

[0037] 600. Detection module; 610. Mounting bracket; 620. Driver; 630. Placement platform; 631. Mounting slot; 632. Negative pressure hole; 640. Camera; 641. First camera; 642. Second camera; 643. Third camera; 650. Mounting base;

[0038] 700, Second processing component; 710, OTP programmer; 720, Material placement area; 730, Insertion and removal robotic arm; 740, Touch robotic arm; 750, Camera component.

[0039] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0043] The display component in electronic devices typically consists of an inner screen and an outer screen. During assembly, the inner screen requires programming to be burned into the circuitry. Electronic devices include tablets and mobile phones. Programming often occurs after the display and touch cables are fixed to the inner screen. However, damage to these cables can lead to programming errors. Damage to the display or touch cables can result in damage to the cables themselves or misalignment at the connection point between the cables and the inner screen. Because the connection points are fixed, it's inconvenient to remove the display or touch cables from the inner screen when repairing products with programming errors. Often, the inner screen and the damaged cables must be scrapped together, or considerable time must be spent removing the cables from the inner screen. Furthermore, current inner and outer screen assembly processes lack control over the yield rate of manufactured products, leading to a decrease in product yield and impacting the company's production efficiency.

[0044] This invention proposes an inner and outer screen assembly process using an inner and outer screen assembly line, solving the problem of inconvenience in removing the display cable or touch cable from the inner screen when repairing products with programming errors. The inner and outer screen assembly line includes a first processing component, a second processing component, a third processing component, and a fourth processing component.

[0045] Please see Figure 1 , Figure 2 In one embodiment of the present invention, the inner and outer screen assembly process includes the following steps:

[0046] S10. The first processing component pre-presses the display cable, touch cable, and inner screen to obtain a first semi-finished product. The first processing component includes a first bonding machine 100, a second bonding machine 300, and a first transport component 200. The inner screen enters the first bonding machine 100, where the display cable is first connected to the inner screen and the connection is pre-pressed. The pre-pressing is achieved by using adhesive to connect the display cable and the inner screen. After the display cable and the inner screen are connected, the cable passes through the first transport component 200 and enters the second bonding machine 300. The second bonding machine 300 connects the touch cable to the inner screen and pre-presses the connection, thus obtaining the first semi-finished product, which includes the inner screen, the display cable, and the touch cable.

[0047] S20. The second processing component 700 burns the OTP program into the first semi-finished product and checks whether the burning program is correct, obtaining a second semi-finished product with a correct burning program. When repairing a first semi-finished product with an incorrect burning program, since the display cable and touch cable are pre-pressed to the inner screen (i.e., connected by adhesive), when it is necessary to remove the display cable or touch cable from the inner screen, it is only necessary to heat the connection point between the display cable or touch cable and the inner screen at a certain temperature to melt the adhesive. At this time, the display cable or touch cable can be easily removed from the inner screen. This solves the problem in the prior art where it is inconvenient to remove the display cable or touch cable from the inner screen when repairing products with incorrect burning programs. In this embodiment, refer to... Figure 4 The second processing component 700 includes a material placement area 720, an OTP programmer 710, a plug-in robotic arm 730, a touch robotic arm 740, a camera component 750, and a computing device. A first semi-finished product is placed in the material placement area 720, which has a limiting groove to hold the first semi-finished product in place. The plug-in robotic arm 730 then inserts the programming connector from the OTP programmer 710 into the first semi-finished product and activates the OTP programmer 710 to program the first semi-finished product. After programming is complete, the first semi-finished product is touched via the touch robotic arm 740 to check if the display and touch functionality are normal. When the robotic arm 740 touches the first semi-finished product, the camera component 750 records a video of it. The video recording time is 3s-6s, usually 3s. The video is then fed back to the computing device, which uses the video to determine whether the program is burned correctly. If the screen of the first semi-finished product remains still for 2s when the touch occurs in the video, or if the delay is high (600ms to 900ms), the program is considered to have failed to burn. Otherwise, the program is considered to have burned correctly.

[0048] S30. The third processing component presses the display cable and touch cable in the second semi-finished product with the inner screen to obtain the third semi-finished product. The third processing component includes a press 400. The second semi-finished product enters the press 400. The press 400 presses the connection between the display cable and the inner screen, and the connection between the touch cable and the inner screen. The pressing permanently fixes the connection between the display cable and the touch cable and the inner screen.

[0049] S40. The fourth processing component attaches the third semi-finished product to the outer screen to obtain the fourth semi-finished product. In this embodiment, there are no restrictions on the fourth processing component.

[0050] The technical solution of this invention employs a first processing component to pre-press the display cable, touch cable, and inner screen to obtain a first semi-finished product. Pre-pressing involves connecting the cable and inner screen using adhesive. After pre-pressing, the OTP program is burned into the first semi-finished product. The program is then checked for correctness to obtain a second semi-finished product with a correctly burned program. Because the display cable and touch cable are pre-pressed with the inner screen (i.e., connected by adhesive), removing the display cable or touch cable from the inner screen is simple. It only requires heating the connection point to melt the adhesive, allowing for easy removal. This solves the problem in the prior art where it is inconvenient to remove the display cable or touch cable from the inner screen when repairing products with incorrect program burning.

[0051] In one embodiment, the inner and outer screen assembly line further includes a testing module; and before the step of the fourth processing component bonding the third semi-finished product to the outer screen to obtain the fourth semi-finished product, the following steps are also included:

[0052] S50. The testing module performs FOG testing on the third semi-finished product. The testing module is a device capable of performing FOG testing; its specific structure is not limited here, and it can be a visual inspection device or a resistance testing device. In this embodiment, FOG testing includes visual inspection and electrical inspection. Visual inspection includes checking whether the ribbon cable and inner screen are connected correctly and whether they are skewed or offset. Electrical inspection includes contact resistance and open / short circuit testing. In this embodiment, after the third semi-finished product is inspected in step S50, any abnormal products are scrapped, and the number of abnormal products in each batch is counted. When the number of abnormal products exceeds a certain percentage, the precision of the first and third processing components needs to be checked to see if there are any precision abnormalities. If precision abnormalities occur, timely repair by staff can prevent low product yield due to abnormalities in the first and third processing components. Monitoring the first and third processing components by the percentage of abnormal products can further improve the precision of the produced products, ensuring a good yield rate even during full-load and high-speed production.

[0053] In one embodiment, the fourth processing component includes a first bonding device and a vacuum bonding machine 500. The step of the fourth processing component bonding the third semi-finished product to the outer screen to obtain the fourth semi-finished product includes:

[0054] S41. The first attaching device attaches a protective film to the front of the outer screen and an OCA (Optical Clear Adhesive) to the back, wherein the first attaching device is configured as a film attaching machine, which attaches a protective film to the front of the outer screen and an OCA to the back.

[0055] S42. The vacuum laminating machine 500 laminates the outer screen to the third semi-finished product, wherein the back of the outer screen is laminated to the third semi-finished product, and performs vacuum defoaming on the laminated product. In this embodiment, the third semi-finished product and the outer screen with OCA attached to the back are placed into the vacuum laminating machine 500; this step can be completed by a handling robot. After the third semi-finished product and the outer screen with OCA attached to the back are placed into the vacuum laminating machine 500, the vacuum laminating machine 500 applies uniform pressure to both in a vacuum environment, causing the OCA to melt at high temperature and evenly fill the gaps between the screens. After completion, it cools and hardens to form a firm bond. In this way, the lamination efficiency of the outer screen and the third semi-finished product can be improved, thereby increasing the production efficiency of the production line.

[0056] In one embodiment, after the step of vacuum defoaming the bonded product, the method further includes:

[0057] S44. The test module performs FOG testing on the product after vacuum defoaming.

[0058] In one embodiment, the inner and outer screen assembly line further includes a fifth working component, and after the step of the fourth processing component bonding the third semi-finished product to the outer screen to obtain the fourth semi-finished product, the line further includes:

[0059] S60. The fifth working component loads the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product. This is done to accommodate different electronic devices, where the inner and outer screens of some electronic devices need to be combined with the middle frame. For electronic devices that require the inner and outer screens to be combined with the middle frame, step S60 is required. For electronic devices that do not require the inner and outer screens to be combined with the middle frame, step S60 is not required.

[0060] In one embodiment, the fifth working component includes a dispensing component and a second assembly component; the step of loading the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product includes:

[0061] S61. The dispensing assembly dispenses adhesive onto the dispensing surface of the middle frame, wherein hot melt adhesive is dispensed onto the dispensing surface of the middle frame. During the dispensing process, it is necessary to ensure that the adhesive path is correct, the adhesive path is full, and there is no adhesive overflow on the outer frame. In this embodiment, the dispensing assembly includes a dispensing area and a dispensing robotic arm. In use, the middle frame is placed in the dispensing area, and the dispensing robotic arm dispenses adhesive onto the dispensing surface of the middle frame. The movement trajectory of the dispensing robotic arm can be designed according to the structure of the middle frame, so that the dispensing robotic arm moves on the dispensing surface of the middle frame at a certain speed.

[0062] S62. The second assembly component attaches the fourth semi-finished product to the adhesive surface, wherein the fourth semi-finished product is completely inserted into the middle frame without gaps, offset, or excess adhesive. This is to improve the assembly accuracy of the fourth semi-finished product and the middle frame, while also reducing the difficulty of operation. Automated adhesive dispensing equipment can be used for dispensing adhesive on the adhesive surface of the middle frame. In this embodiment, the second assembly component is configured as a robotic arm with a suction nozzle. The robotic arm picks up the fourth semi-finished product through the suction nozzle and then presses it into the middle frame.

[0063] In one embodiment, the inner and outer screen assembly line further includes a sixth working component, which includes a second attaching device and a bending device; prior to the step of inserting the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product, the line further includes:

[0064] S70. The second attaching device attaches the fourth semi-finished product to the backing plate. This is to facilitate the bending of the ribbon cable and the attachment of the fourth semi-finished product, enabling it to be used in the production of different electronic devices. The second attaching device is configured as a backing plater, which attaches the fourth semi-finished product to the backing plate, resulting in high operating efficiency and good accuracy.

[0065] S80. The bending device bends and attaches the display cable and the touch cable to the backing. By attaching the cable to the backing, the cable can be effectively positioned before the fourth semi-finished product is installed into the middle frame, preventing damage to the cable during installation. In this embodiment, the bending device can be a bending robotic arm with grippers. The grippers hold the display cable or touch cable and then bend and attach it to the backing, thereby fixing the display cable and touch cable to the backing.

[0066] In one embodiment, reference Figure 3 To further improve the quality of the inner and outer screen assembly process and ensure product yield under full load and high speed, appearance inspection can be performed on the inner screen, outer screen, or semi-finished product before it enters the next step. This reduces the problem of decreased final product yield due to appearance damage. In this embodiment, the inspection structure for inspecting the inner screen, outer screen, or semi-finished product can adopt the following structure. The inner and outer screen assembly line also includes an inspection module 600; the inspection module 600 is used to inspect the appearance of the inner screen, outer screen, third semi-finished product, fourth semi-finished product, fifth semi-finished product, or mid-frame. In this embodiment, when the inner and outer screens do not need to be combined with the mid-frame, the fifth semi-finished product is not produced, and therefore, appearance inspection of the fifth semi-finished product is not required.

[0067] In this embodiment, the detection module 600 includes a mounting frame 610, a driving component 620, a placement stage 630, and an imaging component. The driving component 620 is fixed to the mounting frame 610, and the placement stage 630 is fixed to the driving component 620. The driving component 620 is configured as a rotary motor, which drives the placement stage 630 to rotate. The placement stage 630 is mounted on the output end of the rotary motor, and a placement area is provided on the placement stage 630. The imaging component includes a camera 640, which is positioned facing the placement area. In this embodiment, the detection module 600 further includes at least one processor and a storage device communicatively connected to the at least one processor. The storage device stores appearance comparison images. The processor is electrically connected to the drive unit 620 and the camera 640. When the processor controls the drive unit 620 to rotate the placement platform 630 by a preset angle, the camera 640 acquires image information of the inner screen, outer screen, third semi-finished product, fourth semi-finished product, fifth semi-finished product, or mid-frame. The image information is then fed back to the processor, which compares the image information with the appearance comparison images stored in the storage device and determines whether the appearance of the item under test is perfect. This structure makes appearance inspection of the inner screen, outer screen, third semi-finished product, fourth semi-finished product, fifth semi-finished product, or mid-frame very convenient and more accurate than manual inspection. It further reduces the workload of manual labor. For commonly used electronic devices, such as mobile phones, when the processor controls the drive unit 620 to rotate the placement platform 630 by ninety degrees, the camera 640 acquires image information of the inner screen, outer screen, third semi-finished product, fourth semi-finished product, fifth semi-finished product, or mid-frame.

[0068] In this embodiment, the placement platform 630 has an internal mounting groove 631. The top of the placement platform 630 is transparent and serves as a placement area. A negative pressure hole 632 is provided on the top of the placement platform 630. The negative pressure hole 632 is used to confine the object to be tested on the placement platform 630, preventing the object from shifting when the placement platform 630 rotates, which would cause deviations in the image information captured by the camera 640. A negative pressure tube is installed on the top of the placement platform 630, and the negative pressure tube is connected to the negative pressure hole 632. The camera 640 comprises three cameras: a first camera 641, a second camera 642, and a third camera 643. The first camera 641 is mounted in the mounting slot 631, the second camera 642 is located above the placement platform 630, and the third camera 643 is located on the outer side of the placement platform 630. All three cameras are mounted in the designated positions using mounting brackets 650, which are electrically adjustable to facilitate focus adjustment, resulting in clearer images and improved applicability of the detection module 600. Furthermore, this adjustment method reduces the cost of the first camera 641, second camera 642, and third camera 643, thereby lowering the overall cost of the detection module 600.

[0069] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A process for assembling inner and outer screens, characterized in that, The inner and outer screen assembly line includes a first processing component, a second processing component, a third processing component, and a fourth processing component. The assembly process for the inner and outer screens includes the following steps: The first processing component connects the display cable, touch cable, and inner screen using adhesive pre-pressing to obtain the first semi-finished product; The second processing component burns the OTP program into the first semi-finished product and touches the first semi-finished product through a touch robotic arm. At the same time, it uses a camera component to record video. The correctness of the burning program is checked by whether there is a screen delay of 600ms to 900ms or a screen that remains still for 2 seconds in the video. If the burning program is correct, a second semi-finished product with a correct burning program is obtained. If the programming process fails, the first semi-finished product with the failed programming process is repaired. The repair includes melting the adhesive by heating it and removing the display cable or touch cable from the inner screen. The third processing component presses the display cable and touch cable from the second semi-finished product with the inner screen to obtain the third semi-finished product; The fourth processing component attaches the third semi-finished product to the outer screen to obtain the fourth semi-finished product.

2. The inner and outer screen assembly process as described in claim 1, characterized in that, The inner and outer screen assembly line also includes a testing module; prior to the step where the fourth processing component bonds the third semi-finished product to the outer screen to obtain the fourth semi-finished product, the following steps are also included: The testing module performs FOG testing on the third semi-finished product.

3. The inner and outer screen assembly process as described in claim 2, characterized in that, The fourth processing component includes a first bonding device and a vacuum bonding machine. The step of bonding the third semi-finished product to the outer screen to obtain the fourth semi-finished product includes: The first attaching device attaches a protective film to the front of the outer screen and an OCA to the back; The vacuum laminating machine laminates the outer screen to the third semi-finished product via the OCA and performs vacuum defoaming on the laminated product.

4. The inner and outer screen assembly process as described in claim 3, characterized in that, Following the vacuum defoaming step of the bonded product, the following steps are also included: The testing module performs FOG testing on the product after vacuum defoaming.

5. The inner and outer screen assembly process as described in any one of claims 1 to 4, characterized in that, The inner and outer screen assembly line further includes a fifth working component; after the step of the fourth processing component bonding the third semi-finished product to the outer screen to obtain the fourth semi-finished product, the line further includes: The fifth working component loads the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product.

6. The inner and outer screen assembly process as described in claim 5, characterized in that, The fifth working component includes a dispensing component and a second assembly component; The steps of loading the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product include: The dispensing assembly dispenses adhesive onto the dispensing surface of the middle frame; The second assembly component attaches the fourth semi-finished product to the adhesive surface.

7. The inner and outer screen assembly process as described in claim 5, characterized in that, The inner and outer screen assembly line also includes a sixth working component, which includes a second attaching device and a bending device; before the step of loading the fourth semi-finished product into the middle frame to obtain the fifth semi-finished product, the line further includes: The second bonding device applies the fourth semi-finished product to the backing; The bending device bends and attaches the display cable and the touch cable to the backing.

8. The inner and outer screen assembly process as described in claim 5, characterized in that, The inner and outer screen assembly line also includes a detection module; the detection module is used to inspect the appearance of the inner screen, outer screen, middle frame, third semi-finished product, fourth semi-finished product, or fifth semi-finished product.

9. The inner and outer screen assembly process as described in claim 8, characterized in that, The detection module includes a mounting frame, a driving component, a placement platform, and a camera assembly. The driving component is fixed to the mounting frame, and the placement platform is fixed to the driving component. The driving component drives the placement platform to rotate, and a placement area is provided on the placement platform. The camera assembly includes a camera, which is positioned facing the placement area.

10. The inner and outer screen assembly process as described in claim 9, characterized in that, The placement platform has an installation groove inside, the top of the placement platform is a transparent structure, and the top of the placement platform is a placement area. The top of the placement platform is provided with a negative pressure hole. There are three cameras: a first camera, a second camera, and a third camera. The first camera is installed in the mounting slot, the second camera is located above the placement platform, and the third camera is located on the outer side of the placement platform.

Images