Laminating method of liquid crystal display module

Abstract

The invention relates to a laminating method of a liquid crystal display module. The attaching method of the liquid crystal display module comprises the following steps that a liquid crystal screen and a backlight source are provided, and the backlight source is provided with a bearing hole penetrating in the thickness direction of the backlight source; the dispensing mechanism is used for coating sealant along the contour edge of the backlight source; the bending mechanism is used for bending an FPC (Flexible Printed Circuit) in the liquid crystal screen; the transferring mechanism transfers the liquid crystal screen to the position above the backlight source, and in the process that the transferring mechanism drives the liquid crystal screen to move downwards to be attached to the backlight source, a bent FPC in the liquid crystal screen penetrates through the bearing hole. By means of the arrangement, the FPC in the liquid crystal screen intelligently penetrates through the bearing hole after being bent, so that attachment of the liquid crystal screen and the backlight source is guaranteed, the production efficiency is improved, and the labor intensity of workers and the labor cost of enterprises are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of liquid crystal display module production, and in particular to a method for bonding a liquid crystal display module. Background Art

[0002] The LCD module includes a liquid crystal display (LCD) and a backlight. The market has put forward requirements for thinner, narrower bezels, and larger display areas for LCD modules. The backlight has a receiving hole, and the FPC (Flexible Printed Circuit) in the LCD screen is bent and passed through the receiving hole to facilitate the subsequent connection between the FPC and the PCB (Printed Circuit Board) in the backlight. Based on this, in the process of bonding the LCD screen and the backlight, it is also necessary to ensure that the FPC of the LCD screen can pass through the receiving hole of the backlight.

[0003] The current automated bonding method is difficult to meet the assembly requirements of the above-mentioned liquid crystal display module, but the manual assembly method has the problems of low production efficiency and high labor costs. Summary of the invention

[0004] Based on this, it is necessary to provide a method for bonding a liquid crystal display module, as the current automated bonding method is difficult to meet the assembly requirements of the above-mentioned liquid crystal display module, while the manual assembly method has problems such as low production efficiency and high labor costs.

[0005] A method for bonding a liquid crystal display module comprises the following steps:

[0006] A liquid crystal screen and a backlight source are provided, wherein the backlight source is provided with a receiving hole penetrating along the thickness direction of the backlight source;

[0007] The glue dispensing mechanism applies the sealant along the contour edge of the backlight source;

[0008] The bending mechanism bends the FPC in the liquid crystal screen;

[0009] The transfer mechanism transfers the liquid crystal screen to above the backlight source. When the transfer mechanism drives the liquid crystal screen to move downward to fit the backlight source, the FPC bent in the liquid crystal screen passes through the receiving hole.

[0010] In one of the embodiments, before the "transfer mechanism transfers the LCD screen to above the backlight source", it also includes a collection module that collects first position information of the backlight source and second position information of the LCD screen, and transmits the first position information and the second position information to a control module, and the control module controls the operation of the transfer mechanism according to the first position information and the second position information.

[0011] In one embodiment, the bending mechanism includes a base and a bearing seat rotatable relative to the base, and the step of "the bending mechanism bends the FPC in the liquid crystal screen" specifically includes the following steps:

[0012] Positioning the liquid crystal screen in a horizontal state on the base, and the FPC in the liquid crystal screen is located on the bearing seat;

[0013] The supporting seat absorbs the FPC and drives the FPC to rotate 90° together, so that the FPC is bent 90° relative to the main body in the liquid crystal screen.

[0014] In one embodiment, the step of "the FPC bent in the liquid crystal screen passes through the receiving hole" specifically includes the following steps:

[0015] A guide mechanism is provided, the guide mechanism comprising a bottom plate and two clamping plates slidably arranged on the base, and the bottom end of the clamping plate has a limit block;

[0016] The two clamping plates move toward each other to clamp the two sides of the FPC, and the two limit blocks at the bottom of the two clamping plates move to the two ends of the receiving hole;

[0017] The FPC moves downward along the height direction of the clamping plate and passes through the receiving hole.

[0018] In one of the embodiments, after the step of "the FPC bent in the liquid crystal screen passes through the receiving hole", the following steps are also included:

[0019] Provide clamping and traction mechanism and lifting mechanism;

[0020] The lifting mechanism lifts the clamping and traction mechanism to the first end of the FPC passing through the receiving hole;

[0021] After the clamping and traction mechanism clamps the first end, the lifting mechanism descends and separates from the clamping and traction mechanism, so that the FPC is straightened under the gravity of the clamping and traction mechanism.

[0022] In one embodiment, when the first length of the FPC passing through the receiving hole is not less than half of the total length of the FPC, the transfer mechanism releases the LCD screen, and the LCD screen moves down to the backlight source under the action of the clamping and traction mechanism.

[0023] In one of the embodiments, the pressing platform moves down to the liquid crystal screen and pre-presses for a set time.

[0024] In one embodiment, a pressure-holding mold is provided, the pressure-holding mold comprising a pressure-holding lower mold and a pressure-holding upper mold, after the liquid crystal screen and the backlight source are bonded to form a liquid crystal display module;

[0025] The liquid crystal display module is transferred to the pressure-maintaining lower mold, and the pressure-maintaining upper mold is covered on the pressure-maintaining lower mold to press the liquid crystal screen and the backlight source.

[0026] In one of the embodiments, a limited height block is provided between the pressure-maintaining upper mold and the pressure-maintaining lower mold.

[0027] In one of the embodiments, the pressure-holding mold with the liquid crystal display module pressed is transferred to a static rack for static placement, and the static placement time ranges from 0.5h to 24h.

[0028] The above-mentioned method for bonding the liquid crystal display module is to set a dispensing mechanism to apply sealant along the contour edge of the backlight source; the bending mechanism bends the FPC in the liquid crystal screen; the transfer mechanism transfers the liquid crystal screen to the top of the backlight source, and in the process of the transfer mechanism driving the liquid crystal screen to move down and bond with the backlight source, the bent FPC in the liquid crystal screen passes through the receiving hole. The FPC in the liquid crystal screen passes through the receiving hole after being bent, and the subsequent bonding of the liquid crystal screen and the backlight source is realized intelligently. The production efficiency is improved, the labor intensity of workers and the labor cost of the enterprise are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a schematic diagram of the structure of a liquid crystal display module provided in the present application.

[0030] FIG. 2 is an enlarged schematic diagram of the structure at point A in FIG. 1 .

[0031] FIG. 3 is a flowchart of a method for bonding a liquid crystal display module.

[0032] FIG. 4 is a schematic diagram of the bending mechanism provided in the present application.

[0033] FIG. 5 is a schematic diagram of the guide mechanism provided in the present application.

[0034] in:

[0035] 10. LCD module; 100. LCD screen; 110. body; 120. FPC;

[0036] 200, backlight source; 210, receiving hole; 220, PCB;

[0037] 20. Bending mechanism; 21. Base; 22. Bearing seat; 23. Adsorption hole;

[0038] 30. Guide mechanism; 31. Bottom plate; 32. Clamping plate; 33. Limit block; 34. Clamping groove. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] The technical solution provided by the implementation mode of this application is introduced below in conjunction with the accompanying drawings.

[0046] Referring to FIG. 1 and FIG. 2 , FIG. 1 is a schematic diagram of the structure of the liquid crystal display module 10 provided by the present application, and FIG. 2 is an enlarged schematic diagram of the structure at A in FIG. 1 . In order for the liquid crystal display module 10 to meet the market requirements of thinness, narrow frame, and expanded display area, etc. The liquid crystal display module 10 includes a liquid crystal screen 100 and a backlight source 200, wherein the liquid crystal screen 100 includes a body 110 and an FPC 120 vertically arranged with the body 110, the backlight source 200 is provided with a receiving hole 210 penetrating along the thickness direction thereof, and a PCB 220 is arranged on the side of the backlight source 200 away from the liquid crystal screen 100, and the FPC 120 is connected to the PCB 220 after passing through the receiving hole 210.

[0047] It should be noted that the FPC 120 is parallel to the body 110 in the initial state, so it can be seen that in the process of assembling the LCD screen 100 and the backlight source 200 in the LCD display module 10, the FPC 120 in the LCD screen 100 needs to be bent 90°, and in the subsequent process of attaching the LCD screen 100 to the backlight source 200, it is also necessary to ensure that the bent FPC 120 can pass through the receiving hole 210 of the backlight source 200 to facilitate the subsequent connection between the FPC 120 and the PCB 220 in the backlight source 200. However, the current automated attachment method is difficult to meet the assembly requirements of the above-mentioned LCD display module 10, and the manual assembly method has the problems of low production efficiency and high labor costs.

[0048] Based on this, referring to FIG. 3 , FIG. 3 provides a method for bonding a liquid crystal display module 10 according to an embodiment of the present application. The method for bonding a liquid crystal display module 10 includes the following steps:

[0049] Step S1, providing a liquid crystal screen 100 and a backlight source 200, wherein the backlight source 200 is provided with a receiving hole 210 penetrating along the thickness direction thereof;

[0050] Step S2, the glue dispensing mechanism applies sealant along the contour edge of the backlight source 200. In the specific setting, the sealant can be hot melt glue or structural glue, which has good sealing and shock resistance effect. Step S2 specifically includes the following steps: Step S21, before the formal glue dispensing, the backlight source 200 is first plasma cleaned to ensure that the dyne value of the glue dispensing area is ≥36; Step S22, the backlight source 200 after plasma cleaning is then ultrasonically cleaned to enhance the cleaning effect; Step S23, the glue dispensing mechanism is used to apply sealant along the contour edge of the backlight source 200. It should be noted that the glue dispensing mechanism is a mature technology and will not be introduced in detail. To ensure the emphasis on subsequent bonding, the wide band range of the sealant is 0.4mm-3mm, and the height range of the sealant is 0.3mm-3mm; Step S24, after the glue dispensing is completed, the glue path formed by the sealant is subjected to AOI inspection (Automated Optical Inspection, automatic optical inspection), specifically, the width, thickness, position and other information of the sealant are inspected by AOI testing equipment. When the measured data is within the range of preset data, the glue dispensing is qualified. When the measured data is not within the range of preset data, the glue dispensing is unqualified. At this time, the backlight source 200 with unqualified glue dispensing is automatically thrown into the first waste area by a robot arm to facilitate manual re-inspection or processing.

[0051] Step S3, the bending mechanism 20 bends the FPC 120 in the liquid crystal screen 100. Referring to FIG. 4 , FIG. 4 is a schematic diagram of the bending mechanism 20 provided in an embodiment of the present application. The bending mechanism 20 includes a base 21 and a bearing seat 22 that can rotate relative to the base 21. The specific steps of the bending process are as follows:

[0052] Step S31, the LCD screen 100 is positioned horizontally on the base 21, and the FPC 120 in the LCD screen 100 is located on the bearing seat 22. It should be noted that a positioning groove is provided on the base 21, and the positioning groove and the bearing seat 22 have fixed position dimensions when designed to ensure that when the LCD screen 100 is horizontally set in the positioning groove, the FPC 120 in the LCD screen 100 is located on the bearing seat 22, and two clamping cylinders arranged opposite to each other are also slidably provided on the base. In specific operation, after the LCD screen 100 is placed in the positioning groove, the two clamping cylinders move toward each other to clamp the LCD screen 100, so that the LCD screen 100 is positioned on the base 21;

[0053] Step S32, the support base 22 absorbs the FPC 120. In a specific configuration, the support base 22 is provided with an absorption hole 23, and the support base 22 fixes the FPC 120 on the support base 22 by vacuum absorption;

[0054] Step S33, the support base 22 rotates 90° to drive the FPC 120 to rotate 90° together, so that the FPC 120 is bent 90° relative to the body 110 in the LCD screen 100. It should be emphasized that in order to facilitate the subsequent passing through the receiving hole 210, the FPC 120 is bent downward 90° relative to the body 110;

[0055] Step S34, the bent LCD screen 100 is transferred to an ultrasonic cleaning machine through a robot arm for ultrasonic cleaning, and then the FOG film of the LCD screen 100 is removed by a film removal mechanism, and then the optical fiber sensor detects whether the FOG film is removed from the LCD screen 100. If the film removal fails, it is transferred to the second waste area through a robot arm for convenient processing by workers. It should be noted that the film removal mechanism and the robot arm are mature technologies and will not be introduced in detail.

[0056] It should be emphasized that the above steps S2 and S3 are two production lines operating simultaneously and are performed at the same time.

[0057] Step S4, the transfer mechanism transfers the LCD screen 100 to the top of the backlight source 200. When the transfer mechanism drives the LCD screen 100 to move down and fit the backlight source 200, the bent FPC 120 in the LCD screen 100 passes through the receiving hole 210. In the specific setting, the transfer mechanism can be a combination of a three-way drive mechanism and a vacuum adsorption platform, which is a common mechanical structure and will not be elaborated in detail. In specific use, the vacuum adsorption platform is used to adsorb or release the LCD screen 100, and the three-way drive mechanism is used to drive the LCD screen 100 to move.

[0058] The bonding method of the above-mentioned liquid crystal display module 10 is to apply sealant along the contour edge of the backlight source 200 by setting a dispensing mechanism; the bending mechanism 20 bends the FPC 120 in the liquid crystal screen 100; the transfer mechanism transfers the liquid crystal screen 100 to the top of the backlight source 200, and the transfer mechanism drives the liquid crystal screen 100 to move down to bond with the backlight source 200, and the bent FPC 120 in the liquid crystal screen 100 passes through the receiving hole 210. The FPC 120 in the liquid crystal screen 100 passes through the receiving hole 210 after being bent, and the subsequent bonding of the liquid crystal screen 100 and the backlight source 200 is realized intelligently. The production efficiency is improved, the labor intensity of workers and the labor cost of the enterprise are reduced.

[0059] In order to ensure the accuracy of FPC120 passing through the receiving hole 210, a preferred embodiment includes a collection module that collects the first position information of the backlight source 200 and the second position information of the LCD screen 100 before the "transfer mechanism transfers the LCD screen 100 to the top of the backlight source 200", and transmits the first position information and the second position information to the control module, and the control module controls the operation of the transfer mechanism according to the first position information and the second position information. In a specific setting, the collection module can be an industrial camera, such as a CCD (charge coupled device) camera or other collector.

[0060] Specifically, step S4 includes the following steps: step S41, after the sealant is subjected to AOI inspection, the backlight source 200 is transferred to the working platform by a manipulator, and two clamping cylinders arranged opposite to each other are slidably arranged on the working platform, and the two clamping cylinders move toward each other to clamp the backlight source 200, so that the backlight source 200 is positioned on the working platform;

[0061] Step S42: The transfer mechanism transfers the LCD screen 100 to the top of the working platform;

[0062] Step S43: the acquisition module acquires the first position information of the backlight source 200 and the second position information of the liquid crystal screen 100, and transmits the first position information and the second position information to the control module;

[0063] Step S44: the control module controls the transfer mechanism to move the LCD screen 100 to the top of the backlight source 200 according to the first position information, or controls the plane drive mechanism connected to the working platform to move according to the second position information, so as to achieve accurate compensation of the backlight source 200 on the working platform in X, Y, and θ, and finally the backlight source 200 is arranged opposite to the LCD screen 100;

[0064] Step S45 : When the transfer mechanism drives the LCD screen 100 to move downward to fit the backlight source 200 , the bent FPC 120 in the LCD screen 100 passes through the receiving hole 210 .

[0065] Referring to FIG. 5 , FIG. 5 is a schematic diagram of a guide mechanism 30 provided in an embodiment of the present application. In order for the FPC 120 to pass through the receiving hole 210 smoothly, a preferred implementation manner, in the step of “the FPC 120 bent in the liquid crystal screen 100 passes through the receiving hole 210 ”, specifically includes the following steps:

[0066] A guiding mechanism 30 is provided, which includes a bottom plate 31 and two clamping plates 32 slidably arranged on the bottom plate. The bottom end of the clamping plate 32 has a limit block 33. During specific operation, the two clamping plates 32 move toward each other to clamp the two sides of the FPC 120, and the two limit blocks 33 at the bottom of the two clamping plates 32 move to the two ends of the receiving hole 210. During specific settings, clamping grooves 34 are arranged on the two opposite sides of the two clamping plates 32. During the process of the transfer mechanism driving the LCD screen 100 to move down to fit the backlight source 200 in step S45, the FPC 120 moves down along the height direction of the clamping groove 34 in the clamping plate 32 and can smoothly pass through the receiving hole 210.

[0067] In order to ensure that the bending effect of FPC120 is stable and rebound is not likely to occur, specifically, after the step of "the bent FPC120 in the LCD screen 100 passes through the receiving hole 210", the following steps are also included: providing a clamping and traction mechanism and a lifting mechanism; the lifting mechanism lifts the clamping and traction mechanism to the first end of the FPC120 passing through the receiving hole 210; after the clamping and traction mechanism clamps the first end, the lifting mechanism descends and separates from the clamping and traction mechanism, so that the FPC120 is straightened under the gravity of the clamping and traction mechanism.

[0068] It should be noted that the clamping and traction mechanism can be a clamp that can be opened and closed. For example, the clamp includes two spaced apart jaws, a double-acting cylinder is provided between the two jaws, the double-acting cylinder has two piston rods, and the ends of the two piston rods are respectively connected to the two jaws. The air pressure in the double-acting cylinder drives the two piston rods to drive the corresponding two jaws to move, so that the clamps can clamp and release the PTC more conveniently. The lifting mechanism can be a common lifting platform, which will not be elaborated here.

[0069] In specific operation, after the FPC 120 passes through the receiving hole 210, the clamping and traction mechanism reaches the first end under the transportation of the lifting mechanism and clamps the first end of the FPC 120 through the cylinder. The clamping claw is also provided with a reverse optical fiber sensor, which is used to detect whether the clamping claw successfully clamps the FPC 120; when the clamping claw clamps the FPC 120, the lifting mechanism descends, and the clamping and traction mechanism is in a free fall state, straightening the FPC 120 to form traction. In this process, the two clamping plates 32 in the guide mechanism 30 are opened to move away in translation.

[0070] More specifically, when the first length of FPC120 passing through the receiving hole 210 is not less than half of the total length of FPC120, the vacuum adsorption platform in the transfer mechanism releases the LCD screen 100, and the LCD screen 100 moves down to the backlight source 200 under the action of the clamping and traction mechanism to achieve the bonding between the LCD screen 100 and the backlight source 200.

[0071] In order to strengthen the bonding between the LCD screen 100 and the backlight source 200, the pressing platform is moved down to the LCD screen 100 and pre-pressurized for a set time. In the specific setting, the pressing platform is a common device in the bonding field and will not be described in detail. During the pressing process of the pressing platform, the pre-pressurization time is ≥45s to ensure that the shapes of the LCD screen 100 and the backlight source 200 are stable. After the pre-pressurization is completed, the lifting mechanism takes over the clamping and traction mechanism, and the clamping and traction mechanism releases the FPC 120.

[0072] In order to ensure the bonding effect between the LCD screen 100 and the backlight source 200, a preferred embodiment provides a pressure-holding mold, which includes a pressure-holding lower mold and a pressure-holding upper mold. After the LCD screen 100 and the backlight source 200 are bonded to form the LCD display module 10, that is, after the pre-pressurization is completed, the LCD display module 10 is transferred to the pressure-holding lower mold, and then the pressure-holding upper mold is covered on the pressure-holding lower mold to press the LCD screen 100 and the backlight source 200. The pressure-holding lower mold and the pressure-holding upper mold are positioned by positioning pins.

[0073] In the specific setting, a height limiting block is also provided between the pressure-maintaining upper mold and the pressure-maintaining lower mold, and the thickness of the assembled LCD screen 100 and the backlight source 200 is controlled by the height limiting block. In order to solidify the sealant in a stable environment, the pressure-maintaining mold with the liquid crystal display module 10 pressed is further transferred to a static rack for static placement, and the static placement time ranges from 0.5h to 24h. Preferably, the pressure-maintaining mold is transferred to the static rack for static placement by a robot.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for bonding a liquid crystal display module, characterized in that: The steps include: A liquid crystal screen and a backlight source are provided, wherein the backlight source is provided with a receiving hole penetrating along the thickness direction of the backlight source; The glue dispensing mechanism applies the sealant along the contour edge of the backlight source; The bending mechanism bends the FPC in the liquid crystal screen; The transfer mechanism transfers the liquid crystal screen to above the backlight source. When the transfer mechanism drives the liquid crystal screen to move downward to fit the backlight source, the FPC bent in the liquid crystal screen passes through the receiving hole.

2. The method for bonding a liquid crystal display module according to claim 1, characterized in that: Before the "transfer mechanism transfers the LCD screen to the top of the backlight source", it also includes a collection module that collects the first position information of the backlight source and the second position information of the LCD screen, and transmits the first position information and the second position information to the control module, and the control module controls the operation of the transfer mechanism according to the first position information and the second position information.

3. The method for bonding a liquid crystal display module according to claim 1, characterized in that: The bending mechanism includes a base and a bearing seat that can rotate relative to the base. In the step of "the bending mechanism bends the FPC in the liquid crystal screen", the following steps are specifically included: Positioning the liquid crystal screen in a horizontal state on the base, and the FPC in the liquid crystal screen is located on the bearing seat; The supporting seat absorbs the FPC and drives the FPC to rotate 90° together, so that the FPC is bent 90° relative to the main body in the liquid crystal screen.

4. The method for bonding a liquid crystal display module according to claim 1, characterized in that: The step of "the FPC bent in the liquid crystal screen passes through the receiving hole" specifically includes the following steps: A guide mechanism is provided, the guide mechanism comprising a bottom plate and two clamping plates slidably arranged on the base, and the bottom end of the clamping plate has a limit block; The two clamping plates move toward each other to clamp the two sides of the FPC, and the two limit blocks at the bottom of the two clamping plates move to the two ends of the receiving hole; The FPC moves downward along the height direction of the clamping plate and passes through the receiving hole.

5. The method for bonding a liquid crystal display module according to claim 4, characterized in that: After the step of "the FPC bent in the liquid crystal screen passes through the receiving hole", the following steps are also included: Provide clamping and traction mechanism and lifting mechanism; The lifting mechanism lifts the clamping and traction mechanism to the first end of the FPC passing through the receiving hole; After the clamping and traction mechanism clamps the first end, the lifting mechanism descends and separates from the clamping and traction mechanism, so that the FPC is straightened under the gravity of the clamping and traction mechanism.

6. The method for bonding a liquid crystal display module according to claim 5, characterized in that: When the first length of the FPC passing through the receiving hole is not less than half of the total length of the FPC, the transfer mechanism releases the LCD screen, and the LCD screen moves down to the backlight source under the action of the clamping and traction mechanism.

7. The method for bonding a liquid crystal display module according to claim 6, characterized in that: The pressing platform moves down to the liquid crystal screen and pre-presses for a set time.

8. The method for bonding a liquid crystal display module according to claim 1, characterized in that: Providing a pressure-holding mold, the pressure-holding mold comprising a pressure-holding lower mold and a pressure-holding upper mold, after the liquid crystal screen and the backlight source are bonded to form a liquid crystal display module; The liquid crystal display module is transferred to the pressure-maintaining lower mold, and the pressure-maintaining upper mold is covered on the pressure-maintaining lower mold to press the liquid crystal screen and the backlight source.

9. The method for bonding a liquid crystal display module according to claim 8, characterized in that: A limited height block is arranged between the pressure-maintaining upper mold and the pressure-maintaining lower mold.

10. The method for bonding a liquid crystal display module according to claim 9, characterized in that: The pressure-holding mold with the liquid crystal display module pressed together is transferred to a static rack for static placement, and the static placement time ranges from 0.5h to 24h.

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