A mobile phone LCD screen and its manufacturing process

Abstract

This invention relates to the field of liquid crystal display technology, and more specifically, to a mobile phone liquid crystal display screen and its manufacturing process, comprising: a liquid crystal display layer, the upper surface of which is bonded to a touch layer via a first bonding layer, and the lower surface of which is bonded to a backlight layer via a second bonding layer; the upper surface of which is bonded to a glass cover via a third bonding layer, and the upper surface of which is bonded to a scratch-resistant protective layer via a fourth bonding layer. The entire screen structure is more stable, reducing positional shifts or delamination between layers caused by external factors, thus improving the screen's integrity and durability; the addition of a scratch-resistant protective layer above the glass cover effectively resists minor scratches during daily use, protecting the screen surface from damage and extending the screen's lifespan.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display technology, and more specifically, to a mobile phone liquid crystal display screen and its manufacturing process. Background Technology

[0002] A mobile phone screen, also known as a display screen, is used to display images and colors. Screen size is measured diagonally and is usually measured in inches, referring to the length of the diagonal. With the increasing prevalence of color screens in mobile phones, the material of the screen has become increasingly important. Color screens in mobile phones vary due to differences in LCD quality and R&D technology. The main types include TFT, TFD, UFB, STN, and OLED. Generally, the more colors a screen can display, the more complex the images it can display, and the richer the image's detail. Currently, most mobile phones on the market use LCD screens. LCD screens offer better display quality, but they are more sensitive and easily scratched, especially without proper protection, resulting in poor scratch resistance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a mobile phone LCD screen and its manufacturing process.

[0004] The technical solution adopted in this invention is:

[0005] A mobile phone LCD screen includes: a liquid crystal display layer, a touch control layer bonded to the upper surface of the liquid crystal display layer via a first bonding layer, and a backlight layer bonded to the lower surface of the liquid crystal display layer via a second bonding layer; a glass cover plate bonded to the upper surface of the touch control layer via a third bonding layer, and a scratch-resistant protective layer bonded to the upper surface of the glass cover plate via a fourth bonding layer.

[0006] Furthermore, the first bonding layer, the second bonding layer, the third bonding layer, and the fourth bonding layer are all optically transparent adhesive layers.

[0007] Furthermore, an anti-polarization layer is provided between the touch layer and the liquid crystal display layer.

[0008] Furthermore, the glass cover is made of tempered glass.

[0009] Furthermore, the aforementioned mobile phone LCD screen further includes: a screen frame, the screen frame including: a bezel structure and a back frame structure disposed on the lower surface of the bezel structure; the bezel structure surrounds and connects to the glass cover and the backlight layer, the upper surface of the glass cover is coplanar with the upper surface of the bezel structure, the backlight layer is bonded to the upper surface of the back frame structure, the upper surface of the back frame structure is provided with an annular groove, and the heat dissipation silicone installed in the annular groove abuts against the lower surface of the backlight layer.

[0010] The manufacturing process, applied to the aforementioned mobile phone LCD screen, includes the following steps:

[0011] A first bonding layer and a second bonding layer are applied to the upper and lower surfaces of the liquid crystal display layer using a glue coating machine, and a backlight layer and a touch layer are bonded to the second bonding layer and the first bonding layer using a bonding machine.

[0012] A third bonding layer is applied to the upper surface of the touch layer using an adhesive applicator, and the glass cover is then bonded to the third bonding layer using a bonding machine.

[0013] The fourth bonding layer is applied to the upper surface of the glass cover using an adhesive applicator, and the scratch-resistant protective layer is then bonded to the fourth bonding layer using a bonding machine.

[0014] Placed inside a UV curing machine, the first, second, third, and fourth bonding layers are cured to form a mobile phone LCD screen;

[0015] The mobile phone LCD screen is placed in an AOI optical inspection device to detect whether there are bubbles and impurities in the screen. Based on whether the test results meet the preset standards, the mobile phone LCD screen is divided into qualified and unqualified products. Unqualified products should be marked for subsequent processing or rework.

[0016] Furthermore, the bonding machine includes: a worktable, on which a screen assembly structure and a lifting platform structure are connected; the screen assembly structure includes: a loading frame with a bonding station on top, the loading frame slidingly in the track groove of a horizontal guide rail, the horizontal guide rail being assembled on the worktable; the loading frame being threadedly connected to an adjusting screw mounted on the horizontal guide rail, the adjusting screw being connected to an adjusting motor fixed on the worktable; and a part-picking bonding structure installed on the lifting platform structure located above the loading frame.

[0017] Furthermore, three limiting blocks with abutment grooves and a movable abutment component are arranged around the four corners of the loading frame fitting station. The movable abutment component includes: a locking block with abutment groove, the locking block is fixed to one side of multiple transverse sliding shafts, the multiple transverse sliding shafts are slidably installed in the transverse through holes of the rotating arm, and multiple buffer springs are fixed between the locking block and the rotating arm; the rotating arm is connected to the top of the rotating shaft mounted on the loading frame, and the bottom of the rotating shaft is connected to the locking control motor.

[0018] Furthermore, the lifting platform structure includes: two electric push rods mounted on the worktable and a base mounted on top of the two electric push rods; the part-picking and fitting structure includes: a top plate mounted on the bottom of the base, two side hanging plates fixed on both sides of the bottom of the top plate, the middle of the bottom of the top plate connected to the fixed end of the drive push rod, the mounting base connected to the movable end of the drive push rod connected to two adsorption control components, the two adsorption control components connected to the two side hanging plates, and both adsorption control components connected to a negative pressure pump.

[0019] Furthermore, the adsorption control component includes: a control linkage rotatably connected to the mounting base, the end of the control linkage away from the mounting base being rotatably connected to the mounting frame, the mounting frame being fixed on the control pressure base, the control pressure base being fixed to the inner ends of multiple horizontal guide rods, the middle of the multiple horizontal guide rods being slidably mounted on the side hanging plate, and multiple springs fixed between the side hanging plate and the control pressure base being sleeved on the multiple horizontal guide rods; a rotating sleeve being rotatably connected to the longitudinal hole in the middle of the control pressure base, the rotating sleeve being sleeved on the movable air tube, and a protrusion fixed inside the rotating sleeve being slidably mounted in the limiting groove on the side wall of the movable air tube, and the bottom of the movable air tube... A suction cup is fixedly attached to the control pressure seat. The suction cup is located in the open groove at the bottom of the control pressure seat. When the protrusion contacts the top surface of the limiting groove, the lower surface of the suction cup is coplanar with the lower surface of the control pressure seat. The top of the movable air pipe is sealed and slidably connected to the lower end of the fixed air pipe. The upper end of the fixed air pipe, which is mounted on the assembly frame, is connected to the negative pressure pump. One end of the movable air pipe is rotatably connected to the linkage seat on the pipe body above the rotating sleeve. The linkage seat is rotatably connected to the upper end of the linkage rod. The lower end of the linkage rod is rotatably connected to the side hanging plate. A pressing slope is provided at the bottom of the control pressure seat away from the side hanging plate.

[0020] Furthermore, a stabilizing rack is fixed between the two side hanging plates, and the stabilizing rack passes through the transverse sliding holes of the two assembly frames; the stabilizing rack meshes with a gear fixed on the rotating sleeve.

[0021] Furthermore, the side of the fixed air tube is fixedly connected to one end of the horizontal air tube, and the air control plate fixed at the other end of the horizontal air tube slides in a sealed manner inside the horizontal air cylinder. The open end of the horizontal air cylinder is provided with multiple limiting protrusions for locking inside the air control plate, and the closed end of the horizontal air cylinder is fixed to the side hanging plate.

[0022] As can be seen from the above solution, the beneficial effects of the present invention are as follows:

[0023] The present invention discloses a mobile phone LCD screen and its manufacturing process, which organically combines the liquid crystal display layer, touch layer, backlight layer, glass cover plate, and scratch-resistant protective layer through a first bonding layer, a second bonding layer, a third bonding layer, and a fourth bonding layer, making the entire screen structure more stable, reducing the positional displacement or delamination between layers caused by external factors, and improving the integrity and durability of the screen; the addition of a scratch-resistant protective layer above the glass cover plate can effectively resist minor scratches during daily use, protect the screen surface from damage, and thus extend the screen's lifespan.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 A schematic diagram of a mobile phone LCD screen provided in an embodiment of the present invention. Figure 1 ;

[0027] Figure 2 A schematic diagram of a mobile phone LCD screen provided in an embodiment of the present invention. Figure 2 ;

[0028] Figure 3 A schematic diagram of the laminating machine used in the production process provided in the embodiments of the present invention. Figure 1 ;

[0029] Figure 4 A schematic diagram of the laminating machine used in the production process provided in the embodiments of the present invention. Figure 2 ;

[0030] Figure 5 This is a schematic diagram of the screen assembly structure provided in an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the lifting platform structure provided in an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the component-attaching structure provided in an embodiment of the present invention. Figure 1 ;

[0033] Figure 8 A schematic diagram of the component-attaching structure provided in an embodiment of the present invention. Figure 2 ;

[0034] Figure 9 Schematic diagram of the adsorption control component provided in the embodiments of the present invention Figure 1 ;

[0035] Figure 10 Schematic diagram of the adsorption control component provided in the embodiments of the present invention Figure 2 ;

[0036] Figure 11 A cross-sectional view of the adsorption control component provided in an embodiment of the present invention;

[0037] Figure 12 A schematic diagram of the rotating sleeve provided in an embodiment of the present invention;

[0038] Figure 13 This is a schematic diagram of an active trachea provided in an embodiment of the present invention.

[0039] Icons: LCD display layer 010; Touch layer 020; Backlight layer 030; Glass cover 040; Scratch-resistant protective layer 050; Screen frame 060; Mobile phone LCD screen 070; Workbench 1; Screen assembly structure 2; Loading rack 201; Horizontal guide rail 202; Adjusting screw 203; Adjusting motor 204; Limit block 205; Locking block 206; Horizontal sliding shaft 207; Rotating arm 208; Buffer spring 209; Rotating shaft 210; Lifting platform structure 3; Parts picking and fitting structure 4; Top Plate 401; Side hanging plate 402; Drive push rod 403; Assembly seat 404; Adsorption control component 405; Control linkage 406; Assembly frame 407; Control pressure seat 408; Horizontal guide rod 409; Rotary sleeve 410; Movable air pipe 411; Protrusion 412; Limiting groove 413; Suction cup 414; Fixed air pipe 415; Linkage seat 416; Linkage linkage 417; Pressing inclined surface 418; Stabilizing rack 419; Gear 420; Horizontal air pipe 421; Air control plate 422; Horizontal air cylinder 423. Detailed Implementation

[0040] To ensure a clear and complete description of the technical solutions in the embodiments of the present invention, which will be presented below with reference to the accompanying drawings, it is important to understand that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0042] Example 1

[0043] Please see Figures 1-13 This invention provides a mobile phone LCD screen, comprising: a liquid crystal display layer 010, a touch control layer 020 bonded to the upper surface of the liquid crystal display layer 010 via a first bonding layer, and a backlight layer 030 bonded to the lower surface of the liquid crystal display layer 010 via a second bonding layer; a glass cover plate 040 bonded to the upper surface of the touch control layer 020 via a third bonding layer, and a scratch-resistant protective layer 050 bonded to the upper surface of the glass cover plate 040 via a fourth bonding layer. The first, second, third, and fourth bonding layers are all optically transparent adhesive layers. An anti-polarization layer is also provided between the touch control layer 020 and the liquid crystal display layer 010. The glass cover plate 040 is tempered glass.

[0044] The working principle and technical effects of the above technical solution are as follows:

[0045] In a mobile phone LCD screen of the present invention, the glass cover 040 is made of tempered glass, which has high impact resistance and wear resistance, effectively protecting the internal structure from external impacts, improving the screen's durability, and extending the device's lifespan. The first, second, third, and fourth bonding layers all use optically transparent adhesive layers. This material not only provides good adhesion but also maintains light transparency, ensuring that the screen's resolution and color display are not affected, guaranteeing high definition and color reproduction. An anti-polarization layer is provided between the touch layer 020 and the liquid crystal display layer 010, which effectively reduces ambient light reflection on the screen, improving readability and allowing users to enjoy various... The screen content remains clearly visible under various lighting conditions, enhancing the user experience. The addition of the scratch-resistant protective layer 050 further strengthens the screen's surface protection, effectively resisting both minor daily friction and accidental scratches from hard objects, reducing the probability of screen damage. The tight bonding between layers and the use of an optically transparent adhesive layer ensure the stability of each layer, preventing delamination and improving the screen's structural strength and reliability, making it suitable for a wider range of applications. The touch layer 020 is directly bonded to the liquid crystal display layer 010 via an optically transparent adhesive layer. This design helps reduce touch signal latency, improving the user experience, which is especially important for games and applications that require fast response times.

[0046] The aforementioned mobile phone LCD screen further includes: a screen frame 060, which includes: a bezel structure and a back frame structure disposed on the lower surface of the bezel structure; the bezel structure surrounds and connects to the glass cover plate 040 and the backlight layer 030, the upper surface of the glass cover plate 040 is coplanar with the upper surface of the bezel structure, the backlight layer 030 is attached to the upper surface of the back frame structure, the upper surface of the back frame structure is provided with an annular groove, and the heat dissipation silicone installed in the annular groove abuts against the lower surface of the backlight layer 030.

[0047] The working principle and technical effects of the above technical solution are as follows:

[0048] Based on the original mobile phone LCD screen design, a screen frame 060 is introduced, including a bezel structure and a back frame structure. The introduction of the screen frame 060 provides additional support for the entire screen, enhances the overall structural strength of the screen, makes the screen more robust and durable, and can better resist external impacts and pressure, reducing the risk of damage. The upper surface of the glass cover 040 is coplanar with the upper surface of the bezel structure, ensuring a smooth transition of the screen surface, which is not only aesthetically pleasing but also improves the user's tactile experience. Meanwhile, the coplanar design also helps prevent the accumulation of dust and dirt; the upper surface of the back frame structure has an annular groove in which thermal silicone is fitted. This silicone directly abuts against the lower surface of the backlight layer 030, which helps to conduct the heat generated by the backlight layer away more quickly. Heat is dissipated through the heat dissipation mechanism of the screen frame, thereby effectively reducing the operating temperature of the screen and improving the stability and lifespan of the screen; the design of the screen frame 060 allows the backlight layer 030 to be directly attached to the upper surface of the back frame structure. This modular design facilitates assembly and disassembly during the production process and improves production efficiency; in summary, the addition of the screen frame 060 not only improves the physical strength and heat dissipation performance of the mobile phone LCD screen, but also optimizes the assembly process and user experience.

[0049] Example 2

[0050] Please see Figures 1-13 This invention provides a manufacturing process for a mobile phone LCD screen, comprising the following steps:

[0051] The first bonding layer and the second bonding layer are coated on the upper and lower surfaces of the liquid crystal display layer 010 by a glue coating machine, and the backlight layer 030 and the touch layer 020 are bonded to the second bonding layer and the first bonding layer by a bonding machine.

[0052] The third bonding layer is applied to the upper surface of the touch layer 020 using an adhesive applicator, and the glass cover plate 040 is bonded to the third bonding layer using a bonding machine.

[0053] The fourth bonding layer is applied to the upper surface of the glass cover plate 040 using an adhesive applicator, and the scratch-resistant protective layer 050 is bonded to the fourth bonding layer using a bonding machine.

[0054] Placed in a UV curing machine, the first, second, third, and fourth bonding layers are cured to form a mobile phone LCD screen 070.

[0055] The mobile phone LCD screen 070 is placed in the AOI optical inspection equipment to detect whether there are bubbles and impurities in the mobile phone LCD screen 070. According to whether the test results meet the preset standards, the mobile phone LCD screen 070 is divided into qualified products and unqualified products. Unqualified products should be marked for subsequent processing or rework.

[0056] The working principle and technical effects of the above technical solution are as follows:

[0057] The entire production process utilizes a variety of automated equipment, including glue applicators, laminators, and UV curing machines, reducing errors that may arise from manual operation and improving production efficiency and product consistency. The laminator ensures tight bonding between layers, eliminating bubbles and impurities, thus guaranteeing high screen quality and excellent visual effects. The UV curing process rapidly cures the lamination layers, improving production efficiency while ensuring strong connections between layers and enhancing screen durability. AOI optical inspection equipment precisely detects bubbles and impurities, ensuring product quality meets preset standards. Timely inspection and classification improve product quality and customer satisfaction. By classifying products based on inspection results, non-conforming products can be promptly marked, processed, or reworked, ensuring final product quality, reducing defective products, and increasing yield.

[0058] Example 3

[0059] Please see Figures 1-13 To improve the production and processing effect of mobile phone LCD screens, the bonding machine used in the production process of this invention is a customized bonding equipment according to actual needs, which effectively improves the bonding effect of each layer in the mobile phone LCD screen. The bonding machine includes: a worktable 1, on which a screen assembly structure 2 and a lifting platform structure 3 are connected. The screen assembly structure 2 includes: a loading frame 201 with a bonding station on the top, the loading frame 201 sliding in the track groove of a horizontal guide rail 202, the horizontal guide rail 202 being assembled on the worktable 1; the loading frame 201 is threadedly connected to an adjusting screw 203 rotating on the horizontal guide rail 202, the adjusting screw 203 being connected to an adjusting motor 204 fixed on the worktable 1; the part picking bonding structure 4 installed on the lifting platform structure 3 is located above the loading frame 201.

[0060] The working principle and technical effects of the above technical solution are as follows:

[0061] When bonding a mobile phone LCD screen 070, the bonding machine installs one film layer to be bonded on the loading rack 201, and picks up another film layer to be bonded through the part-picking bonding structure 4. Then, the lifting platform structure 3 controls the film layer on the part-picking bonding structure 4 to move towards the film layer on the loading rack 201, so that the two film layers are tightly bonded. For example, the LCD display layer 010 coated with the first bonding layer is installed on the loading rack 201, and then the backlight layer 030 is picked up through the part-picking bonding structure 4 and controlled to bond the backlight layer 030 onto the LCD display layer 010. After bonding, the part-picking bonding structure 4 can also be used to press the two film layers flat, so that the bonding effect is better. In this invention, the loading rack 201 is used to place the film layer to be bonded (such as the liquid crystal display layer 010 coated with the first bonding layer). The loading rack 201 can slide on the horizontal guide rail 202. Through the cooperation of the adjusting screw 203 and the adjusting motor 204, the adjusting motor 204 starts and drives the adjusting screw 203 to rotate. The rotation of the adjusting screw 203 changes its contact position with the loading rack 201, driving the loading rack 201 to slide on the horizontal guide rail 202, thereby realizing the precise position adjustment of the loading rack 201 and the film layer on it. The picking and bonding structure 4 is located above the loading rack 201 and is used to pick up another film layer to be bonded (such as the backlight layer 030). The picking and bonding structure 4 can move up and down through the lifting platform structure 3, thereby accurately placing the film layer on the film layer on the loading rack 201. The lifting platform structure 3 is responsible for controlling the up and down movement of the picking and bonding structure 4 to ensure that the film layer can be bonded smoothly and accurately. Together, through precise control of the lifting platform structure 3, a tight bond between the film layers can be achieved. After the film layers are bonded, the picking and bonding structure 4 can also press and flatten the two film layers, further improving the bonding effect and ensuring that there are no defects such as bubbles or wrinkles. By adjusting the lead screw 203 and the adjusting motor 204, high-precision positioning of the loading frame 201 can be achieved, ensuring that the film layers are accurately positioned before bonding. The entire bonding process is automatically completed by the picking and bonding structure 4 and the lifting platform structure 3, reducing manual operation and improving production efficiency and consistency. By precisely controlling the up and down movement and the pressing and flattening steps of the picking and bonding structure 4, a tight bond between the film layers can be ensured, reducing defects such as bubbles and wrinkles and improving the product yield. This bonding machine can be customized according to actual needs and is suitable for the production and processing of mobile phone LCD screens of different sizes and types, with strong flexibility and adaptability.

[0062] The loading frame 201 is surrounded by three limiting blocks 205 with abutment grooves and a movable abutment component at the four corners of the contact station. The movable abutment component includes a locking block 206 with abutment groove, which is fixed to one side of multiple transverse sliding shafts 207. The multiple transverse sliding shafts 207 are slidably disposed in the transverse through holes of the rotating arm 208. Multiple buffer springs 209 are fixedly connected between the locking block 206 and the rotating arm 208. The rotating arm 208 is connected to the top of the rotating shaft 210 mounted on the loading frame 201, and the bottom of the rotating shaft 210 is connected to the locking control motor.

[0063] The working principle and technical effects of the above technical solution are as follows:

[0064] The bonding station of the loading frame 201 is used to place the film layer to be bonded. It can be precisely fixed to the film layer by engaging with the four corners of the film layer through the contact grooves of three limiting blocks 205 and the contact groove of the locking block 206, ensuring stability during assembly and bonding. To facilitate the placement and removal of the film layer after bonding, a movable locking block 206 is designed. When placing or removing the film layer, the locking control motor drives the rotating shaft 210 to rotate, causing the rotating shaft 210 to drive the rotating arm 208 away from the film. The direction of the layer is flipped, thereby driving multiple transverse sliding shafts 207 and locking blocks 206 connected to one end of the multiple transverse sliding shafts 207 to disengage from the fixation of the membrane layer through the rotating arm 208. When it is necessary to fix the membrane layer, the abutting groove of the locking block 206 is controlled to abut against the membrane layer. Multiple buffer springs 209 are fixed between the locking block 206 and the rotating arm 208 to play an elastic buffering role, which can not only ensure the stable fixation of the membrane layer, but also reduce the damage and impact on the membrane layer when the locking block 206 moves.

[0065] In this invention, the contact grooves of three fixed limiting blocks 205 and movable locking blocks 206 can precisely contact the four corners of the film layer, achieving precise fixation of the film layer. This effectively prevents the film layer from shifting or shaking during the bonding process, ensuring the stability and accuracy of the bonding. Fixing points are set at the four corners of the film layer to avoid the problem of warping or deformation of the film layer due to uneven stress distribution during the bonding process. The locking block 206 is connected to the rotating arm 208 via multiple transverse sliding shafts 207 and is controlled by the rotating shaft 210 and the locking control motor below it. This allows the locking block 206 to detach from the film layer when needed, facilitating the placement and removal of the film layer and avoiding additional damage to it. The rotating arm 208 achieves a flipping motion via the rotating shaft 210, moving the locking block 206 away from or closer to the film layer, making operation more flexible. The locking block 206 and the rotating arm 208 are connected by multiple buffer springs 209, which provide elastic cushioning during the movement of the locking block 206. This effectively reduces the impact force of the locking block 206 on the film layer, preventing damage to the film layer caused by fixing actions. During the bonding process, the material of the film layer is often relatively fragile (such as the liquid crystal layer or backlight layer). The design of the buffer springs 209 can maximize the protection of the integrity of the film layer while ensuring the fixing effect. The flexible movement mechanism of the locking block 206 makes the loading and unloading of the film layer more convenient, shortens the operation time, and improves production efficiency.

[0066] The lifting platform structure 3 includes: two electric push rods mounted on the worktable 1 and a base mounted on the top of the two electric push rods; the part-picking and fitting structure 4 includes: a top plate 401 mounted on the bottom of the base, two side hanging plates 402 fixed on both sides of the bottom of the top plate 401, the middle of the bottom of the top plate 401 connected to the fixed end of the drive push rod 403, the mounting base 404 connected to the movable end of the drive push rod 403 connected to two adsorption control components 405, the two adsorption control components 405 being connected to the two side hanging plates 402 respectively, and both adsorption control components 405 being connected to a negative pressure pump.

[0067] The working principle and technical effect of the above technical solution are as follows: When the two electric push rods are started, they can drive the platform on top to move up and down. When the platform moves, it can drive the top plate 401 to move up and down, thereby controlling the horizontal height of the picking and bonding structure 4, so that the film layer picked up by the picking and bonding structure 4 can be bonded. The two adsorption control components 405 in the picking and bonding structure 4 are connected to the negative pressure pump, so that the two adsorption control components 405 can be adsorbed on both sides of the film layer by controlling the negative pressure pump. Then, the film layer is controlled to contact the film layer installed on the loading frame 201. After bonding, the negative pressure pump is controlled to release the control of the two adsorption control components 405, so that the two adsorption control components 405 can detach from the film layer.

[0068] In this invention, both adsorption control components 405 are connected to a negative pressure pump, which can conveniently control the adsorption and release of the membrane layer, ensuring the reliability of the adsorption process and the convenience of the release process. The two adsorption control components 405 are respectively adsorbed on both sides of the membrane layer, which can effectively balance the force on the membrane layer during the adsorption and bonding process, and avoid membrane layer deformation or damage caused by single-point adsorption.

[0069] The adsorption control component 405 includes: a control link 406 rotatably connected to the mounting base 404; one end of the control link 406 away from the mounting base 404 is rotatably connected to the mounting frame 407; the mounting frame 407 is fixed on the control pressure base 408; the control pressure base 408 is fixed to the inner ends of multiple horizontal guide rods 409; the middle of the multiple horizontal guide rods 409 is slidably mounted on the side hanging plate 402; multiple springs fixed between the side hanging plate 402 and the control pressure base 408 are sleeved on the multiple horizontal guide rods 409; a rotating sleeve 410 is rotatably connected to the longitudinal hole in the middle of the control pressure base 408; the rotating sleeve 410 is sleeved on the movable air pipe 411; a protrusion 412 fixed inside the rotating sleeve 410 is slidably mounted in the limiting groove 413 on the side wall of the movable air pipe 411; the movable air pipe 411... A suction cup 414 is fixedly attached to the bottom. The suction cup 414 is located in the open groove at the bottom of the control pressure seat 408. When the protrusion 412 contacts the top surface of the limiting groove 413, the lower surface of the suction cup 414 is coplanar with the lower surface of the control pressure seat 408. The top of the movable air pipe 411 is slidably and sealed in the lower end of the fixed air pipe 415. The upper end of the fixed air pipe 415, which is installed on the assembly frame 407, is connected to the negative pressure pump. The movable air pipe 411 is rotatably connected to one end of the linkage seat 416 on the pipe body above the rotating sleeve 410. The linkage seat 416 is rotatably connected to the upper end of the linkage rod 417. The lower end of the linkage rod 417 is rotatably connected to the side hanging plate 402. A pressing slope 418 is provided at the bottom of the control pressure seat 408 away from the side hanging plate 402.

[0070] The working principle and technical effect of the above technical solution are as follows: The first function of the adsorption control component 405 is to adsorb and release the membrane layer. At this time, the inner ends of the two adsorption control components 405 are in contact, that is, the two control pressure seats 408 are in contact. The bottom of the two control pressure seats 408 is used to limit the membrane layer and fix the upper end of the air pipe 415 to the negative pressure pump. The negative pressure pump can control the suction cup 414 to suck or release the membrane layer through the cooperation of the fixed air pipe 415 and the movable air pipe 411, thereby realizing convenient control of the membrane layer. The suction cups 414 of the two adsorption control components 405 are relatively adsorbed on both sides of the membrane layer, with good stability. The second function of the adsorption control component 405 is to smooth and defoam the membrane layer after it is bonded. After the membrane layers are bonded together, the negative pressure pump releases control of the suction cup 414, and the control drive push rod 403 extends, thereby controlling the assembly seat 404 to move downward, that is, controlling the assembly seat 404 to move away from the top plate 401. At this time, the assembly seat 404 drives the two adsorption control components 405 to separate, causing the two adsorption control components 405 to move towards the side hanging plates 402 on both sides, thereby achieving the flattening treatment of the membrane layers. The specific movement is as follows: when the assembly seat 404 moves downward, it drives the connection end with the control link 406 to move downward. The other end of the control link 406 pushes the assembly frame 407 to move towards the side hanging plate 402 that is close to it, thereby driving the control pressure seat 408 to move towards the side hanging plate 402. The control pressure seat 408 drives multiple horizontal The guide rod 409 slides on the side hanging plate 402, compressing multiple springs sleeved on the multiple horizontal guide rods 409. This, in turn, controls the pressing slope 418 at the bottom of the pressure seat 408 to perform a flattening and scraping treatment on the film layer, effectively improving the adhesion of the film layer and removing air bubbles from the film layer. Since the suction cup 414 is made of elastic rubber, even if the negative pressure pump releases the control of the suction cup 414, there is still a possibility that the suction cup 414 and the film layer may stick together. This situation will affect the adsorption effect of the film layer, easily lifting the film layer and affecting the flatness of the film layer. Therefore, a structure is also designed to control the suction cup 414 to better detach from the film layer, namely: the lower end of the linkage rod 417 is rotatably connected to the side hanging plate 402, and the upper end of the linkage rod 417 is rotatably connected to the side hanging plate 402. The movable air tube 411 is connected to the linkage seat 416. This structure allows the movable air tube 411 and the linkage seat 416 to move the upper end of the linkage rod 417 towards the side hanging plate 402 when the control pressure seat 408 moves towards the side hanging plate 402. The linkage rod 417 then reacts to the linkage seat 416, causing the linkage seat 416 to drive the movable air tube 411 to slide upward. When the movable air tube 411 slides upward, the length inserted into the upper end of the fixed air tube 415 increases. Furthermore, the movable air tube 411 slides upward within the rotating sleeve 410, thereby effectively detaching the suction cup 414 at the bottom of the movable air tube 411 from the membrane layer. This allows the suction cup 414 to retract into the open groove at the bottom of the control pressure seat 408, without affecting the subsequent leveling effect.

[0071] A stabilizing rack 419 is fixed between the two side hanging plates 402. The stabilizing rack 419 passes through the transverse sliding holes of the two mounting brackets 407. The stabilizing rack 419 meshes with the gear 420 fixed on the rotating sleeve 410.

[0072] A stabilizing rack 419 is fixed between the two side hanging plates 402. The stabilizing rack 419 passes through the transverse sliding holes of the two assembly frames 407, which can improve the stability of the two assembly frames 407 during movement and improve the effect of the two control pressure seats 408 on the flatness of the film layer. In addition, when the control pressure seat 408 moves towards the side hanging plate 402, the contact position between the gear 420 on the rotating sleeve 410 and the stabilizing rack 419 can be changed, so that the gear 420 rotates around its own axis. When the gear 420 rotates, it drives the rotating sleeve 410 to rotate. When the sleeve 410 rotates, the movable air tube 411 rotates through the cooperation of the protrusion 412 and the limiting groove 413, thereby controlling the rotation of the suction cup 414, making it easier to control the suction cup 414 to detach from the membrane layer and improving the detachment effect. When the protrusion 412 contacts the top surface of the limiting groove 413, the lower surface of the suction cup 414 is coplanar with the lower surface of the control pressure seat 408. The limiting groove 413 also plays a limiting role, so that the lowest position of the lower surface of the suction cup 414 is coplanar with the lower surface of the control pressure seat 408, ensuring the adsorption control effect on the membrane layer.

[0073] A fixed air tube 415 is fixedly connected to one end of a horizontal air tube 421. A control plate 422, fixed to the other end of the horizontal air tube 421, slides within a sealed horizontal air cylinder 423. The open end of the horizontal air cylinder 423 has multiple limiting protrusions for locking onto the inner side of the control plate 422. The closed end of the horizontal air cylinder 423 is fixed to a side hanging plate 402. When the control pressure seat 408 moves towards the side hanging plate 402, the horizontal air tube 421 can also be controlled to drive the control plate 422 to slide within the horizontal air cylinder 423, thereby pressurizing the gas within the horizontal air cylinder 423 into the horizontal air tube 421. Some gas passes through the fixed air tube 415 into the movable air tube 411 and the suction cup 414, allowing the suction cup 414 to detach from the membrane layer while simultaneously exerting pressure on the membrane layer to a certain extent, thus improving the adhesion stability between multiple membrane layers.

[0074] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0075] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A laminating machine for laminating various film layers of a mobile phone LCD screen, wherein the film layers include a liquid crystal display layer, a touch layer, a backlight layer, a glass cover, and a scratch-resistant protective layer; the laminating machine includes a worktable, a screen assembly structure, a lifting platform structure, and a component picking and laminating structure; the screen assembly structure and the lifting platform structure are connected on the worktable; characterized in that: The lifting platform structure includes: two electric push rods mounted on the worktable and a base installed on top of the two electric push rods; The part-removal bonding structure includes: a top plate, two side hanging plates, a drive push rod, an assembly base, and two adsorption control components. The top plate is installed at the bottom of the platform, and two side hanging plates are fixed on both sides of the bottom of the top plate. The middle of the bottom of the top plate is connected to the fixed end of the drive push rod. The assembly base connected to the movable end of the drive push rod is connected to the two adsorption control components. The two adsorption control components are connected to the two side hanging plates, and both adsorption control components are connected to a negative pressure pump. The adsorption control component is used for adsorbing and releasing the membrane layer, as well as smoothing and defoaming the laminated membrane layer. The adsorption control component includes: a control rod rotatably connected to the mounting base; one end of the control rod away from the mounting base is rotatably connected to the mounting frame; the mounting frame is fixed to the control pressure base; the control pressure base is fixed to the inner ends of multiple horizontal guide rods; the middle of the multiple horizontal guide rods slides on a side hanging plate; multiple springs fixed between the side hanging plate and the control pressure base are sleeved on the multiple horizontal guide rods; a rotating sleeve is rotatably connected to a longitudinal hole in the middle of the control pressure base; the rotating sleeve is sleeved on a movable air tube; a protrusion fixed inside the rotating sleeve slides on the movable air tube. Inside the limiting groove on the side wall of the trachea, a suction cup is fixedly connected to the bottom of the movable trachea. The suction cup is located in the open groove at the bottom of the control pressure seat. When the protrusion contacts the top surface of the limiting groove, the lower surface of the suction cup is coplanar with the lower surface of the control pressure seat. The top of the movable trachea is sealed and slidably connected to the lower end of the fixed trachea. The upper end of the fixed trachea, which is mounted on the assembly frame, is connected to the negative pressure pump. One end of the movable trachea is rotatably connected to the linkage seat on the tube body above the rotating sleeve. The linkage seat is rotatably connected to the upper end of the linkage rod, and the lower end of the linkage rod is rotatably connected to the side hanging plate. A pressing slope is provided at the bottom of the control pressure seat away from the side hanging plate.

2. The bonding machine according to claim 1, characterized in that, The screen assembly structure includes: a loading frame with a fitting station on the top, the loading frame sliding in the track groove of a horizontal guide rail, the horizontal guide rail being mounted on a worktable; the loading frame being threadedly connected to an adjusting screw mounted on the horizontal guide rail, the adjusting screw being connected to an adjusting motor fixed on the worktable; and a part-picking fitting structure installed on the lifting platform structure located above the loading frame.

3. The bonding machine according to claim 2, characterized in that, The four corners of the loading frame fitting station are surrounded by three limiting blocks with abutment grooves and a movable abutment component. The movable abutment component includes: a locking block with abutment groove, which is fixed to one side of multiple transverse sliding shafts. The multiple transverse sliding shafts are slidably installed in the transverse through holes of the rotating arm. Multiple buffer springs are fixed between the locking block and the rotating arm. The rotating arm is connected to the top of the rotating shaft mounted on the loading frame, and the bottom of the rotating shaft is connected to the locking control motor.

4. The bonding machine according to claim 3, characterized in that, The upper surface of the liquid crystal display layer is bonded to the touch layer via a first bonding layer, and the lower surface of the liquid crystal display layer is bonded to the backlight layer via a second bonding layer; the upper surface of the touch layer is bonded to the glass cover via a third bonding layer, and the upper surface of the glass cover is bonded to the scratch-resistant protective layer via a fourth bonding layer.

5. The bonding machine according to claim 4, characterized in that, The first, second, third, and fourth bonding layers are all optically transparent adhesive layers.

6. The bonding machine according to claim 4, characterized in that, An anti-polarization layer is also provided between the touch layer and the liquid crystal display layer.

7. The laminating machine according to claim 4, characterized in that, The glass cover is made of tempered glass.

8. The laminating machine according to claim 4, characterized in that, The mobile phone LCD screen also includes a screen frame, which includes a bezel structure and a back frame structure disposed on the lower surface of the bezel structure. The bezel structure surrounds and connects to the glass cover and the backlight layer. The upper surface of the glass cover is coplanar with the upper surface of the bezel structure. The backlight layer is bonded to the upper surface of the back frame structure. The upper surface of the back frame structure is provided with an annular groove. The heat dissipation silicone installed in the annular groove abuts against the lower surface of the backlight layer.

9. A method for producing a mobile phone LCD screen using a laminating machine according to any one of claims 1-8, characterized in that, Includes the following steps: A first bonding layer and a second bonding layer are applied to the upper and lower surfaces of the liquid crystal display layer using a glue coating machine, and a backlight layer and a touch layer are bonded to the second bonding layer and the first bonding layer using a bonding machine. A third bonding layer is applied to the upper surface of the touch layer using an adhesive applicator, and the glass cover is then bonded to the third bonding layer using a bonding machine. The fourth bonding layer is applied to the upper surface of the glass cover using an adhesive applicator, and the scratch-resistant protective layer is then bonded to the fourth bonding layer using a bonding machine. Placed inside a UV curing machine, the first, second, third, and fourth bonding layers are cured to form a mobile phone LCD screen; The mobile phone LCD screen is placed in an AOI optical inspection device to detect whether there are bubbles and impurities in the LCD screen. Based on whether the test results meet the preset standards, the mobile phone LCD screen is divided into qualified products and unqualified products.

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