Mobile phone liquid crystal screen and production process thereof

Abstract

The invention relates to the technical field of liquid crystal screens, in particular to a mobile phone liquid crystal screen and a production process thereof.The mobile phone liquid crystal screen comprises a liquid crystal display layer, the upper surface of the liquid crystal display layer is connected with a touch layer in an attached mode through a first attaching layer, and the lower surface of the liquid crystal display layer is connected with a backlight layer in an attached mode through a second attaching layer; the upper surface of the touch control layer is connected with a glass cover plate through a third attaching layer in an attached mode, and the upper surface of the glass cover plate is connected with an anti-scratch protection layer through a fourth attaching layer in an attached mode. The whole screen structure is more stable, the phenomenon of position deviation or layering caused by external factors among the layers is reduced, and the integrity and durability of the screen are improved; the anti-scratch protective layer is additionally arranged above the glass cover plate, so that slight scratch in daily use can be effectively resisted, the surface of the screen is prevented from being damaged, and the service life of the screen is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal screens, and more specifically, to a mobile phone liquid crystal screen and its production process. Background Art

[0002] The mobile phone screen, also known as the display screen, is used to display images and colors. The screen size is calculated based on the diagonal of the screen and is usually measured in inches, referring to the length of the diagonal of the screen. As the color screens of mobile phones have become increasingly common, the screen materials have become more and more important. The color screens of mobile phones vary due to different LCD qualities and R & D technologies. Their types are roughly TFT, TFD, UFB, STN, and OLED. Generally speaking, the more colors that can be displayed, the more complex images can be shown, and the richer the levels of the picture. Currently, mobile phones on the market generally use liquid crystal screens. The liquid crystal screens have good display effects, but they are quite sensitive and are easily scratched physically, especially without proper protection, and their scratch resistance performance is poor. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a mobile phone liquid crystal screen and its production process.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A mobile phone liquid crystal screen includes: a liquid crystal display layer, a touch layer is adhesively connected to the upper surface of the liquid crystal display layer through a first adhesive layer, and a backlight layer is adhesively connected to the lower surface of the liquid crystal display layer through a second adhesive layer; a glass cover plate is adhesively connected to the upper surface of the touch layer through a third adhesive layer, and an anti-scratch protection layer is adhesively connected to the upper surface of the glass cover plate through a fourth adhesive layer.

[0006] Further, the first adhesive layer, the second adhesive layer, the third adhesive layer, and the fourth adhesive layer are all optical transparent adhesive layers.

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

[0008] Further, the glass cover plate is tempered glass.

[0009] Further, the mobile phone liquid crystal screen further includes: a screen frame, and the screen frame includes: a frame structure and a back frame structure provided on the lower surface of the frame structure; the frame structure surrounds and connects the glass cover plate and the backlight layer around, the upper surface of the glass cover plate is coplanar with the upper surface of the frame structure, the backlight layer is adhesively connected to the upper surface of the back frame structure, and an annular groove is provided on the upper surface of the back frame structure, and the heat dissipation silica gel assembled in the annular groove abuts and cooperates with the lower surface of the backlight layer.

[0010] A production process, applied to the mobile phone liquid crystal screen described above, includes the following steps:

[0011] The first laminating layer and the second laminating layer are coated on the upper surface and the lower surface of the liquid crystal display layer respectively by a glue coating machine, and the backlight layer and the touch control layer are respectively laminated on the second laminating layer and the first laminating layer by a laminating machine;

[0012] Coating a third bonding layer on the upper surface of the touch layer by a glue coating machine, and bonding the glass cover plate to the third bonding layer by a bonding machine;

[0013] Coating a fourth bonding layer on the upper surface of the glass cover plate by a glue coating machine, and bonding the anti-scratch protective layer on the fourth bonding layer by a bonding machine;

[0014] Place in a UV curing machine to cure the first laminating layer, the second laminating layer, the third laminating layer and the fourth laminating layer to form a mobile phone LCD screen;

[0015] The mobile phone LCD screen is placed in the AOI optical inspection equipment to detect whether there are bubbles and impurities in the mobile phone LCD screen. The mobile phone LCD screen is divided into qualified and unqualified products according to whether the inspection results meet the preset standards. Unqualified products should be marked and subsequently processed or returned for repair.

[0016] Furthermore, the laminating machine includes: a workbench, a screen assembly structure and a lifting platform structure are connected to the workbench, the screen assembly structure includes: a loading frame with a laminating station on the top, the loading frame is slid in a track groove of a horizontal guide rail, and the horizontal guide rail is assembled on the workbench; the loading frame is threadedly connected to an adjusting screw rotated on the horizontal guide rail, and the adjusting screw is connected to an adjusting motor fixed on the workbench; the piece picking and laminating structure installed on the lifting platform structure is located above the loading frame.

[0017] Furthermore, three limit blocks with interference grooves and a movable interference component are arranged around the four corners of the loading frame fitting station, and the movable interference component includes: a locking block with a interference groove, the locking block is fixed on one side of multiple transverse sliding shafts, the multiple transverse sliding shafts are slidably arranged in the transverse through holes of the rotating arm, and multiple buffer compression springs are fixed between the locking block and the rotating arm; the rotating arm is connected to the top of the rotating shaft rotated 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 installed on the workbench and a base installed on the top of the two electric push rods; the picking and fitting structure includes: a top plate installed 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 is connected to the fixed end of the driving push rod, the assembly base connected to the movable end of the driving push rod is connected to two adsorption control components, the two adsorption control components are relatively connected to the two side hanging plates, and the two adsorption control components are both connected to the negative pressure pump.

[0019] Further, the adsorption control component includes: a control connecting rod rotatably connected to the assembly seat, one end of the control connecting rod away from the assembly seat is rotatably connected to the assembly frame, the assembly frame is fixed on the control pressure seat, the control pressure seat is fixed at the inner ends of multiple horizontal guide rods, the middle parts of the multiple horizontal guide rods are slidably arranged on the side suspension plate, and multiple springs fixed between the side suspension plate and the control pressure seat are sleeved on the multiple horizontal guide rods; a rotating sleeve is rotatably connected in the longitudinal hole in the middle of the control pressure seat, the rotating sleeve is sleeved on the movable air pipe, a convex block fixedly connected in the rotating sleeve is slidably arranged in the limiting groove on the side wall of the movable air pipe, a suction cup is fixedly connected to the bottom of the movable air pipe, the suction cup is located in the open groove at the bottom of the control pressure seat, and when the convex block 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 hermetically and slidably connected in the lower pipe orifice of the fixed air pipe, and the upper pipe orifice of the fixed air pipe installed on the assembly frame is connected to a negative pressure pump; one end of a linkage seat is rotatably connected to the pipe body of the movable air pipe above the rotating sleeve, the linkage seat is rotatably connected to the upper end of a linkage connecting rod, and the lower end of the linkage connecting rod is rotatably connected to the side suspension plate; a pressing inclined surface is arranged at one end of the bottom of the control pressure seat away from the side suspension plate.

[0020] Further, a stabilizing rack is fixed between the two side suspension plates, and the stabilizing rack is arranged in the horizontal sliding holes of the two assembly frames; the stabilizing rack meshes with a gear fixedly arranged on the rotating sleeve.

[0021] Further, one end of a horizontal air pipe is fixedly connected to the side of the fixed air pipe, the other end of the horizontal air pipe is fixedly connected to a control air disk which is hermetically and slidably arranged in a horizontal air cylinder, a plurality of limiting protrusions for clamping on the inner side of the control air disk are arranged at the open end of the horizontal air cylinder, and the closed end of the horizontal air cylinder is fixed on the side suspension plate.

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

[0023] For a mobile phone liquid crystal screen and its production process of the present invention, the liquid crystal display layer, the touch control layer, the backlight layer, the glass cover plate and the anti-scratch protection layer are organically combined through the first bonding layer, the second bonding layer, the third bonding layer and the fourth bonding layer, so that the whole screen structure is more stable, reducing the position offset or delamination phenomenon between layers caused by external factors, and improving the integrity and durability of the screen; an anti-scratch protection layer is added above the glass cover plate, which can effectively resist slight scratches in daily use, protect the screen surface from damage, and thus extend the service life of the screen.

[0024] To make the above objects, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given below in conjunction with the accompanying drawings for detailed description. Description of the Drawings

[0025] The drawings are used to provide further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0026] Figure 1 Schematic diagram of a mobile phone liquid crystal screen provided by an embodiment of the present invention Figure 1 ;

[0027] Figure 2 Schematic diagram of a mobile phone liquid crystal screen provided by an embodiment of the present invention Figure 2 ;

[0028] Figure 3 Schematic diagram of the laminator used in the production process provided by an embodiment of the present invention Figure 1 ;

[0029] Figure 4 Schematic diagram of the laminator used in the production process provided by an embodiment of the present invention Figure 2 ;

[0030] Figure 5 Schematic diagram of the screen assembly structure provided by an embodiment of the present invention;

[0031] Figure 6 Schematic diagram of the lifting table structure provided by an embodiment of the present invention

[0032] Figure 7 Schematic diagram of the pick-up and lamination structure provided by an embodiment of the present invention Figure 1 ;

[0033] Figure 8 Schematic diagram of the pick-up and lamination structure provided by an embodiment of the present invention Figure 2 ;

[0034] Figure 9 Schematic diagram of the adsorption control component provided by an embodiment of the present invention Figure 1 ;

[0035] Figure 10 Schematic diagram of the adsorption control component provided by an embodiment of the present invention Figure 2 ;

[0036] Figure 11 Cross-sectional view of the adsorption control component provided by an embodiment of the present invention

[0037] Figure 12 Schematic diagram of the rotating sleeve provided by an embodiment of the present invention

[0038] Figure 13 Schematic diagram of the movable air pipe provided by an embodiment of the present invention.

[0039] Icons: Liquid crystal display layer 010; Touch control layer 020; Backlight layer 030; Glass cover plate 040; Anti-scratch protection layer 050; Screen frame 060; Mobile phone liquid crystal screen 070; Workbench 1; Screen assembly structure 2; Loading rack 201; Horizontal guide rail 202; Adjusting lead screw 203; Adjusting motor 204; Limit block 205; Locking pressure block 206; Horizontal sliding shaft 207; Rotating arm 208; Buffer compression spring 209; Rotating shaft 210; Lifting table structure 3; Pick-up and fitting structure 4; Top plate 401; Side hanging plate 402; Driving push rod 403; Assembly seat 404; Adsorption control component 405; Control connecting rod 406; Assembly frame 407; Control pressure seat 408; Horizontal guide rod 409; Rotating sleeve 410; Movable air pipe 411; Convex block 412; Limit groove 413; Suction cup 414; Fixed air pipe 415; Linkage seat 416; Linkage connecting rod 417; Pressing inclined plane 418; Stable rack 419; Gear 420; Horizontal air pipe 421; Air control disc 422; Horizontal air cylinder 423. Detailed implementation mode

[0040] In the following, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

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

[0042] Embodiment 1

[0043] Please refer to Figures 1 - 13 , A mobile phone liquid crystal screen provided by the present invention includes: a liquid crystal display layer 010, the upper surface of the liquid crystal display layer 010 is adhesively connected to the touch control layer 020 through a first adhesive layer, and the lower surface of the liquid crystal display layer 010 is adhesively connected to the backlight layer 030 through a second adhesive layer; the upper surface of the touch control layer 020 is adhesively connected to the glass cover plate 040 through a third adhesive layer, and the upper surface of the glass cover plate 040 is adhesively connected to the anti-scratch protection layer 050 through a fourth adhesive layer. The first adhesive layer, the second adhesive layer, the third adhesive layer and the fourth adhesive layer are all optical 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 effect of the above technical solution are:

[0045] In a mobile phone liquid crystal screen of the present invention, the glass cover plate 040 is made of tempered glass, which has high impact resistance and wear resistance, can effectively protect the internal structure from external impacts, improve the durability of the screen, and extend the service life of the device; the first bonding layer, the second bonding layer, the third bonding layer and the fourth bonding layer are all made of optically transparent adhesive layers. This material not only provides good bonding effect, but also can maintain the transparency of light, ensuring that the resolution and color display of the screen are not affected, and guaranteeing the high definition and color restoration of the screen; an anti-polarization layer is provided between the touch layer 020 and the liquid crystal display layer 010, which can effectively reduce the reflection of ambient light on the screen, improve the readability of the screen, enable users to clearly see the screen content under various light conditions, and improve the user experience; the addition of the anti-scratch protection layer 050 further enhances the surface protection of the screen. Whether it is daily slight friction or accidental scratching by hard objects, it can be well resisted, reducing the probability of screen damage; the close fitting between the layers and the use of optically transparent adhesive layers ensure the stability between the layers, are not easy to delaminate, improve the structural strength and reliability of the screen, and are suitable for a wider range of application scenarios; the touch layer 020 is directly and tightly bonded to the liquid crystal display layer 010 through an optically transparent adhesive layer. This design helps to reduce the delay of touch signals and improve the user experience. Especially for games and applications that require quick response, this is particularly important.

[0046] The described mobile phone liquid crystal screen further includes: a screen frame 060, and the screen frame 060 includes: a border structure and a back frame structure provided on the lower surface of the border structure; the border structure surrounds and connects to the periphery of 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 border structure. The backlight layer 030 is adhesively connected to the upper surface of the back frame structure. An annular groove is provided on the upper surface of the back frame structure, and the heat dissipation silica gel assembled 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 solutions are as follows:

[0048] Based on the original mobile phone liquid crystal screen design, a screen frame 060 is introduced, including a border 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 durable, and enables it to better resist external impacts and pressures, reducing the risk of damage. The upper surface of the glass cover plate 040 is coplanar with the upper surface of the border structure, ensuring a smooth transition on the screen surface, which is not only aesthetically pleasing but also improves the user's tactile experience. At the same time, the coplanar design also helps prevent the accumulation of dust and dirt. The upper surface of the back frame structure is provided with an annular groove, in which a heat-dissipating silica gel is assembled. This silica gel directly contacts and cooperates with the lower surface of the backlight layer 030, helping to conduct the heat generated by the backlight layer out more quickly and dissipate heat through the heat-dissipation mechanism of the screen frame, thereby effectively reducing the working temperature of the screen and improving the stability and lifespan of the screen. The design of the screen frame 060 enables the backlight layer 030 to be directly attached and connected to the upper surface of the back frame structure. This modular design facilitates assembly and disassembly during the production process, improving production efficiency. In summary, the addition of the screen frame 060 not only enhances the physical strength and heat-dissipation performance of the mobile phone liquid crystal screen but also optimizes the assembly process and user experience.

[0049] Embodiment 2

[0050] Please refer to Figures 1 - 13 , the present invention provides a production process applied to the above-mentioned mobile phone liquid crystal screen, including the following steps:

[0051] A first bonding layer and a second bonding layer are respectively coated on the upper surface and the lower surface of the liquid crystal display layer 010 by a glue applicator, and the backlight layer 030 and the touch layer 020 are respectively bonded to the second bonding layer and the first bonding layer by a laminator.

[0052] A third bonding layer is coated on the upper surface of the touch layer 020 by a glue applicator, and the glass cover plate 040 is bonded to the third bonding layer by a laminator.

[0053] A fourth bonding layer is coated on the upper surface of the glass cover plate 040 by a glue applicator, and the anti-scratch protection layer 050 is bonded to the fourth bonding layer by a laminator.

[0054] It is placed in a UV curing machine to cure the first bonding layer, the second bonding layer, the third bonding layer, and the fourth bonding layer to form a mobile phone liquid crystal screen 070.

[0055] The mobile phone liquid crystal screen 070 is placed in an AOI optical detection device to detect whether there are bubbles and impurities in the mobile phone liquid crystal screen 070. According to whether the detection results meet the preset standards, the mobile phone liquid crystal screen 070 is divided into qualified products and unqualified products. The unqualified products should be marked for subsequent processing or repair.

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

[0057] Throughout the production process, a variety of automated equipment such as glue applicators, laminators, and UV curing machines are used, reducing the errors that may be brought about by manual operations, improving production efficiency and product consistency; using a laminator for laminating each layer can ensure that the layers are tightly laminated, without bubbles and impurities, ensuring the high quality and good visual effects of the screen; adopting the UV curing process can quickly cure the lamination layer, improve production efficiency, and at the same time ensure that the layers are firmly connected, enhancing the durability of the screen; by using AOI optical detection equipment to detect the finished products, problems such as bubbles and impurities can be finely detected, ensuring that the product quality meets the preset standards. Timely detection and classification processing improve product quality and customer satisfaction; by classifying the products according to the detection results, unqualified products can be marked, processed or repaired in a timely manner, ensuring the quality of the final products, reducing the outflow of defective products, and increasing the yield rate.

[0058] Embodiment 3

[0059] Please refer to Figures 1 - 13 , in order to improve the production and processing effect of mobile phone liquid crystal screens, the laminator adopted in the production process of the present invention is a customized laminating device according to actual needs, effectively improving the lamination effect of each layer in the mobile phone liquid crystal screen; the laminator includes: a workbench 1, on which a screen assembly structure 2 and a lifting table structure 3 are connected. The screen assembly structure 2 includes: a loading rack 201 with a lamination station at the top, the loading rack 201 is slidably arranged in the track groove of a horizontal guide rail 202, and the horizontal guide rail 202 is assembled on the workbench 1; the loading rack 201 is threadedly connected to an adjustment lead screw 203 rotatably arranged on the horizontal guide rail 202, and the adjustment lead screw 203 is connected to an adjustment motor 204 fixed on the workbench 1; a pick-up and lamination structure 4 installed on the lifting table structure 3 is located above the loading rack 201.

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

[0061] When the laminator laminates the mobile phone liquid crystal screen 070, a film layer to be laminated is installed on the loading rack 201, and another film layer to be laminated is picked up by the picking and laminating structure 4. Then, the film layer on the picking and laminating structure 4 is controlled by the lifting table structure 3 to move towards the film layer on the loading rack 201, so that the two film layers are closely laminated. For example, the liquid crystal display layer 010 coated with the first lamination layer is installed on the loading rack 201, and then the backlight layer 030 is picked up by the picking and laminating structure 4, and the backlight layer 030 is controlled to be laminated on the liquid crystal display layer 010. After lamination, the two film layers can also be pressed and flattened by the picking and laminating structure 4, so that the lamination effect is better. In the present invention, the loading rack 201 is used to place the film layer to be laminated (such as the liquid crystal display layer 010 coated with the first lamination layer). The loading rack 201 can slide on the horizontal guide rail 202. By the cooperation of the adjusting lead screw 203 and the adjusting motor 204, when the adjusting motor 204 starts to drive the adjusting lead screw 203 to rotate, the rotation of the adjusting lead screw 203 changes its contact position with the loading rack 201, driving the loading rack 201 to slide on the horizontal guide rail 202, realizing the precise position adjustment of the loading rack 201 and the film layer thereon; the picking and laminating structure 4 is located above the loading rack 201 and is used to pick up another film layer to be laminated (such as the backlight layer 030). The picking and laminating structure 4 can move up and down through the lifting table structure 3, so as to accurately place the film layer on the film layer on the loading rack 201; the lifting table structure 3 is responsible for controlling the up and down movement of the picking and laminating structure 4 to ensure that the film layers can be laminated together smoothly and accurately. By precisely controlling the lifting table structure 3, close lamination between the film layers can be achieved; after the film layers are laminated, the picking and laminating structure 4 can also press and flatten the two film layers to further improve the lamination effect and ensure that there are no defects such as bubbles and wrinkles; through the cooperation of the adjusting lead screw 203 and the adjusting motor 204, high-precision positioning of the loading rack 201 can be achieved, ensuring that the position of the film layer before lamination is accurate; the entire lamination process is automatically completed by the picking and laminating structure 4 and the lifting table structure 3, reducing manual operation and improving production efficiency and consistency; by precisely controlling the up and down movement and the pressing and flattening step of the picking and laminating structure 4, close lamination between the film layers can be ensured, reducing bad phenomena such as bubbles and wrinkles and improving the yield rate of products; this laminator can be customized according to actual needs, is suitable for the production and processing of mobile phone liquid crystal screens of different sizes and types, and has strong flexibility and adaptability.

[0062] Three limit blocks 205 with interference grooves and a movable interference component are arranged around the four corners of the loading frame 201 fitting station. The movable interference component includes: a locking block 206 with a interference groove, the locking block 206 is fixed on one side of multiple horizontal sliding shafts 207, and the multiple horizontal sliding shafts 207 are slidably arranged in the horizontal through holes of the rotating arm 208. Multiple buffer compression 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 rotated 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 laminating station of the loading rack 201 is used to place the film layer to be laminated, and can be fitted at the four corners of the film layer through the abutment grooves of the three limit blocks 205 and the abutment grooves of the locking block 206, so as to achieve accurate fixation of the film layer and ensure stability during assembly and lamination. In order to facilitate the placement and removal of the film layer after the laminating process, a movable locking block 206 is designed. When placing and removing the film layer, the locking control motor is controlled to drive the rotating shaft 210 to rotate so that the rotating shaft 210 drives the rotating arm 208 to move away from the film. The direction of the layer is flipped, so that the rotating arm 208 drives the multiple horizontal sliding shafts 207 and the locking block 206 connected to one end of the multiple horizontal sliding shafts 207 to be separated from the fixation of the membrane layer. When the membrane layer needs to be fixed, the abutment groove of the locking block 206 is controlled to abut and cooperate with the membrane layer. A plurality of buffer springs 209 are fixedly connected between the locking block 206 and the rotating arm 208, which play the role of elastic buffering, which can not only ensure the stable fixation of the membrane layer, but also reduce the damage impact of the locking block 206 on the membrane layer when it moves.

[0065] In the present invention, through the abutment grooves of the three fixed limit blocks 205 and the movable locking and pressing block 206, the four corners of the film layer can be accurately abutted, realizing the precise fixation of the film layer, effectively preventing the film layer from shifting or jittering during the laminating process, and ensuring the stability and precision of lamination; by setting fixed points at the four corners of the film layer, the problems of warping or deformation of the film layer due to uneven stress distribution during the laminating process are avoided. The locking and pressing block 206 is connected to the rotating arm 208 through multiple horizontal sliding shafts 207 and is controlled by the rotating shaft 210 and the locking and pressing control motor below it, so that the locking and pressing block 206 can be separated from the film layer when needed, facilitating the placement and removal of the film layer and avoiding additional damage to the film layer; the rotating arm 208 realizes a flipping motion through the rotating shaft 210, driving the locking and pressing block 206 to move away from or close to the film layer, making the operation more flexible; the locking and pressing block 206 and the rotating arm 208 are connected through multiple buffer compression springs 209, which can provide an elastic buffering effect when the locking and pressing block 206 moves, effectively reducing the impact force of the locking and pressing block 206 on the film layer and avoiding damage to the film layer caused by the fixing action. During the laminating process, the material of the film layer is often relatively fragile (such as the liquid crystal layer or the backlight layer), and the design of the buffer compression springs 209 can maximize the integrity of the film layer while ensuring the fixing effect; the flexible movement mechanism of the locking and pressing block 206 makes the loading and unloading of the film layer more convenient, shortening the operation time and improving the production efficiency.

[0066] The lifting table structure 3 includes: two electric push rods assembled on the workbench 1 and a pedestal installed on the tops of the two electric push rods; the picking and laminating structure 4 includes: a top plate 401 installed at the bottom of the pedestal, two side hanging plates 402 fixed to both sides of the bottom of the top plate 401, the middle of the bottom of the top plate 401 is connected to the fixed end of the driving push rod 403, and the assembly seat 404 connected to the movable end of the driving push rod 403 is connected to two adsorption control components 405, the two adsorption control components 405 are relatively connected to the two side hanging plates 402, and both two adsorption control components 405 are connected to a negative pressure pump.

[0067] The working principle and technical effects of the above technical solution are as follows: When the two electric push rods are started, they can drive the pedestal at their tops to move in the up and down directions. When the pedestal moves, it can drive the top plate 401 to move up and down, thereby realizing the control of the horizontal height of the picking and laminating structure 4, so that the film layer picked up by the picking and laminating structure 4 can be laminated. The two adsorption control components 405 in the picking and laminating structure 4 are both connected to the negative pressure pump, facilitating the control of the two adsorption control components 405 to adsorb on both sides of the film layer through the negative pressure pump, and then controlling the film layer to contact the film layer installed on the loading rack 201. After lamination, the negative pressure pump is controlled to release the control of the two adsorption control components 405, facilitating the two adsorption control components 405 to separate from the film layer.

[0068] In the present invention, both of the two adsorption control components 405 are connected to the negative pressure pump, which can conveniently control the adsorption and release of the film layer through the negative pressure pump, 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 film layer, which can effectively balance the force on the film layer during the adsorption and fitting processes, and avoid the deformation or damage of the film layer caused by single-point adsorption.

[0069] The adsorption control component 405 includes: a control connecting rod 406 rotatably connected to the assembly seat 404, one end of the control connecting rod 406 away from the assembly seat 404 is rotatably connected to the assembly frame 407, the assembly frame 407 is fixed on the control pressing seat 408, the control pressing seat 408 is fixed at the inner ends of multiple transverse guide rods 409, the middle parts of the multiple transverse guide rods 409 are slidably arranged on the side hanging plate 402, and multiple springs fixedly arranged between the side hanging plate 402 and the control pressing seat 408 are sleeved on the multiple transverse guide rods 409; a rotating sleeve 410 is rotatably connected in the longitudinal hole in the middle of the control pressing seat 408, the rotating sleeve 410 is sleeved on the movable air pipe 411, a convex block 412 fixedly connected in the rotating sleeve 410 is slidably arranged in the limiting groove 413 on the side wall of the movable air pipe 411, a suction cup 414 is fixedly connected to the bottom of the movable air pipe 411, the suction cup 414 is located in the open groove at the bottom of the control pressing seat 408, and when the convex block 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 pressing seat 408; the top of the movable air pipe 411 is hermetically and slidably connected in the lower pipe orifice of the fixed air pipe 415, and the upper pipe orifice of the fixed air pipe 415 installed on the assembly frame 407 is connected to the negative pressure pump; one end of a linkage seat 416 is rotatably connected to the pipe body of the movable air pipe 411 above the rotating sleeve 410, the linkage seat 416 is rotatably connected to the upper end of a linkage connecting rod 417, and the lower end of the linkage connecting rod 417 is rotatably connected to the side hanging plate 402; a pressing inclined surface 418 is arranged at one end of the bottom of the control pressing seat 408 away from the side hanging plate 402.

[0070] The working principle and technical effects of the above technical solution are as follows: The first function of the adsorption control component 405 is to adsorb and release the film layer. At this time, the inner ends of the two adsorption control components 405 are in contact with each other, that is, the two control pressure seats 408 are in a fitting state. The bottoms of the two control pressure seats 408 are used to limit the film layer. The upper end nozzle of the fixed air pipe 415 is connected to the negative pressure pump. The negative pressure pump can control the suction cup 414 to suck or release the film layer through the cooperation of the fixed air pipe 415 and the movable air pipe 411, so as to realize the convenient control of the film layer. The suction cups 414 of the two adsorption control components 405 are relatively adsorbed on both sides of the film layer, with good stability. The second function of the adsorption control component 405 is to level and remove bubbles from the adhered film layer. After the two film layers are adhered together, after the negative pressure pump releases the control of the suction cup 414, the control driving push rod 403 is extended, so as to control the assembly seat 404 to move downward, that is, to control 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, so that the two adsorption control components 405 move towards the side suspension plates 402 on both sides, so as to realize the leveling treatment of the film layer. The specific movement is as follows: When the assembly seat 404 moves downward, it drives the connection end of it and the control connecting rod 406 to move downward. The other end of the control connecting rod 406 pushes the assembly frame 407 to move towards the side suspension plate 402 close to it, so as to drive the control pressure seat 408 to move towards the side suspension plate 402. The control pressure seat 408 drives multiple horizontal guide rods 409 to slide on the side suspension plate 402, and compresses multiple springs sleeved on the multiple horizontal guide rods 409, so as to level and scrape the film layer through the pressing inclined surface 418 at the bottom of the control pressure seat 408, effectively improving the adhesion effect of the film layer and removing bubbles in 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 of sticking between the suction cup 414 and the film layer. This situation will affect the adsorption effect of the film layer, easily lift the film layer, and affect the leveling effect of the film layer. Therefore, a structure for controlling the suction cup 414 to better separate from the film layer is also designed, that is: the lower end of the linkage connecting rod 417 is rotatably connected to the side suspension plate 402, and the upper end of the linkage connecting rod 417 is connected to the linkage seat 416 rotatably arranged on the movable air pipe 411. The setting of this structure makes the movable air pipe 411 and the linkage seat 416 drive the upper end of the linkage connecting rod 417 to move towards the side suspension plate 402 when the control pressure seat 408 moves towards the side suspension plate 402. The linkage connecting rod 417 reacts on the linkage seat 416, so that the linkage seat 416 drives the movable air pipe 411 to slide upward. When the movable air pipe 411 slides upward, the length of the movable air pipe 411 inserted into the upper end nozzle of the fixed air pipe 415 becomes larger, and the movable air pipe 411 slides upward in the rotating sleeve 410, so as to drive the suction cup 414 at the bottom of the movable air pipe 411 to effectively separate from the film layer, so that the suction cup 414 is received into the open slot at the bottom of the control pressure seat 408, without affecting the subsequent scraping effect.

[0071] A stabilizing rack 419 is fixed between two side suspension plates 402. The stabilizing rack 419 is disposed in the horizontal sliding holes of two assembly frames 407. The stabilizing rack 419 meshes with a gear 420 fixed on a rotating sleeve 410.

[0072] A stabilizing rack 419 is fixed between two side suspension plates 402. The stabilizing rack 419 is disposed in the horizontal sliding holes of two assembly frames 407, which can improve the stability of the two assembly frames 407 during movement and enhance the effect of the two control pressing seats 408 on the flatness of the film layer. In addition, when the control pressing seat 408 moves towards the side suspension plate 402, the contact position between the gear 420 on the rotating sleeve 410 and the stabilizing rack 419 can be changed, causing the gear 420 to rotate about its own axis. When the gear 420 rotates, it drives the rotating sleeve 410 to rotate. When the rotating sleeve 410 rotates, it drives the movable air pipe 411 to rotate through the cooperation of a convex block 412 and a limiting groove 413, thereby controlling the rotation of the suction cup 414, making it easier to control the suction cup 414 to disengage from the film layer and improving the disengagement effect. Among them, when the convex block 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 pressing seat 408. The limiting groove 413 can also play a limiting role, making the lowest position of the lower surface of the suction cup 414 the position coplanar with the lower surface of the control pressing seat 408, ensuring the adsorption control effect on the film layer.

[0073] One end of a transverse air pipe 421 is fixedly connected to the side of a fixed air pipe 415. The other end of the transverse air pipe 421 is fixedly connected to a gas control disc 422, which is hermetically slidable in a transverse air cylinder 423. The open end of the transverse air cylinder 423 is provided with a plurality of limiting protrusions for being clamped inside the gas control disc 422. The closed end of the transverse air cylinder 423 is fixed on the side suspension plate 402. When the control pressing seat 408 moves towards the side suspension plate 402, it can also control the transverse air pipe 421 to drive the gas control disc 422 to slide in the transverse air cylinder 423, thereby pressing the gas in the transverse air cylinder 423 into the transverse air pipe 421. Part of the gas enters the movable air pipe 411 and the suction cup 414 through the fixed air pipe 415. When the suction cup 414 disengages from the film layer, it can also exert a certain pressure on the film layer to a certain extent, improving the bonding stability between multiple film layers.

[0074] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0075] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. A mobile phone LCD screen, characterized in that: include: Liquid crystal display layer, the upper surface of the liquid crystal display layer is bonded to the touch layer through the first bonding layer, and the lower surface of the liquid crystal display layer is bonded to the backlight layer through the second bonding layer; the upper surface of the touch layer is bonded to the glass cover plate through the third bonding layer, and the upper surface of the glass cover plate is bonded to the anti-scratch protection layer through the fourth bonding layer.

2. A mobile phone LCD screen according to claim 1, characterized in that: The first bonding layer, the second bonding layer, the third bonding layer and the fourth bonding layer are all optically transparent adhesive layers.

3. A mobile phone LCD screen according to claim 1, characterized in that: An anti-polarization layer is also arranged between the touch control layer and the liquid crystal display layer.

4. A mobile phone LCD screen according to claim 1, characterized in that: The glass cover plate is tempered glass.

5. A mobile phone LCD screen according to claim 1, characterized in that: Also includes: The screen frame includes: a frame structure and a back frame structure arranged on the lower surface of the frame structure; The frame structure is connected around the glass cover and the backlight layer. The upper surface of the glass cover is coplanar with the upper surface of the frame 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 dissipating silicone installed in the annular groove is in contact with the lower surface of the backlight layer.

6. A production process, applied to a mobile phone liquid crystal screen according to any one of claims 1 to 5, characterized in that: The following steps are involved: The first laminating layer and the second laminating layer are coated on the upper surface and the lower surface of the liquid crystal display layer respectively by a glue coating machine, and the backlight layer and the touch control layer are respectively laminated on the second laminating layer and the first laminating layer by a laminating machine; Coating a third bonding layer on the upper surface of the touch layer by a glue coating machine, and bonding the glass cover plate to the third bonding layer by a bonding machine; Coating a fourth bonding layer on the upper surface of the glass cover plate by a glue coating machine, and bonding the anti-scratch protective layer on the fourth bonding layer by a bonding machine; Place in a UV curing machine to cure the first laminating layer, the second laminating layer, the third laminating layer and the fourth laminating layer to form a mobile phone LCD screen; The mobile phone LCD screen is placed in the AOI optical inspection equipment to detect whether there are bubbles and impurities in the mobile phone LCD screen. The mobile phone LCD screen is divided into qualified and unqualified products according to whether the inspection results meet the preset standards. Unqualified products should be marked and subsequently processed or returned for repair.

7. The production process according to claim 6, characterized in that: The laminating machine comprises: a workbench, a screen assembly structure and a lifting platform structure are connected to the workbench, the screen assembly structure comprises: a loading frame with a laminating station on the top, the loading frame is slid in a track groove of a horizontal guide rail, and the horizontal guide rail is assembled on the workbench; the loading frame is threadedly connected to an adjusting screw rotatably arranged on the horizontal guide rail, and the adjusting screw is connected to an adjusting motor fixed on the workbench; a piece picking and laminating structure installed on the lifting platform structure is located above the loading frame.

8. The production process according to claim 7, characterized in that: Three limit blocks with interference grooves and a movable interference component are arranged around the four corners of the loading frame fitting station. The movable interference component includes: a locking block with a interference groove, the locking block is fixed on one side of multiple transverse sliding shafts, the multiple transverse sliding shafts are slidably arranged in the transverse through holes of the rotating arm, and multiple buffer compression springs are fixedly connected between the locking block and the rotating arm; the rotating arm is connected to the top of the rotating shaft rotated on the loading frame, and the bottom of the rotating shaft is connected to the locking control motor.

9. The production process according to claim 7, characterized in that: The lifting platform structure includes: two electric push rods assembled on the workbench and a base installed on the top of the two electric push rods; the picking and fitting structure includes: a top plate installed 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 is connected to the fixed end of the driving push rod, the assembly base connected to the movable end of the driving push rod is connected to two adsorption control components, the two adsorption control components are relatively connected to the two side hanging plates, and the two adsorption control components are both connected to the negative pressure pump.

10. The production process according to claim 9, characterized in that: The adsorption control component includes: a control link rotatably connected to the assembly seat, one end of the control link away from the assembly seat is rotatably connected to the assembly frame, the assembly frame is fixed on the control pressure seat, the control pressure seat is fixed on the inner ends of multiple cross-guide rods, the middle parts of the multiple cross-guide rods are slid on the side hanging plates, and multiple springs fixed between the side hanging plates and the control pressure seat are sleeved on the multiple cross-guide rods; a rotating sleeve is rotatably connected in the longitudinal hole in the middle of the control pressure seat, the rotating sleeve is sleeved on the active air pipe, the protrusion fixed in the rotating sleeve is slid in the limit groove of the side wall of the active air pipe, and the bottom of the active air pipe is fixed A suction cup is connected, and the suction cup is located in an open groove at the bottom of the control pressure seat. When the protrusion contacts the top surface of the limit 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 pipe opening of the fixed air pipe, and the upper end pipe opening of the fixed air pipe installed on the assembly frame is connected to the negative pressure pump; the movable air pipe is located on the tube body above the rotating sleeve and is rotatably connected to one end of the linkage seat, the linkage seat is rotatably connected to the upper end of the linkage connecting rod, and the lower end of the linkage connecting rod is rotatably connected to the side hanging plate; a pressing inclined surface is provided at the end of the bottom of the control pressure seat away from the side hanging plate.

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