A water-based glue bonding process for liquid crystal display panels with anti-leakage glue

Abstract

The invention discloses a water-glue bonding process for a liquid crystal display panel with anti-leakage glue, comprising a step of formulating an external anti-leakage glue pattern, a step of dispensing the external anti-leakage glue pattern, a step of semi-curing the external anti-leakage glue, a step of dispensing the W-shaped pattern, a bonding and pressing step, and a step of curing, etc. The process of the invention is simple, easy to implement in mass production, and has low mass production cost. In the mass production process of water-glue bonding, glue leakage of the liquid crystal display panel can be effectively avoided, process steps can be reduced, production efficiency can be improved, and production cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of display panels of Generation 6 and above, and in particular to a water-glue bonding process for liquid crystal display panels that prevents glue leakage. Background Art

[0002] In the prior art, for liquid crystal display panels of generation 6 and above that adopt a water-glue bonding process during mass production, firstly, glue is spotted in the middle of the functional sheet, and then the cover plate is bonded to the SENSOR functional sheet. During the bonding process, glue often overflows from all sides of the SENSOR functional sheet. Therefore, a manual glue wiping process step is required in the mass production process of water-glue bonding of liquid crystal display panels. The manual glue wiping process step requires a large number of workers. The workers first wipe the edge of the liquid crystal display panel manually to clean the overflowed glue, resulting in extremely low production efficiency during mass production. Therefore, it is necessary to improve it. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a water-glue bonding process for liquid crystal display panels that prevents glue leakage, which can effectively avoid glue leakage of liquid crystal display panels during the mass production of water-glue bonding, reduce process steps, improve production efficiency, and reduce production costs.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a water-gluing process for liquid crystal display panels to prevent glue leakage, comprising the following steps:

[0005] The steps for making the external anti-leakage glue pattern are to first make the corresponding anti-leakage glue pattern for the SENSOR functional sheet through the drawing software of the glue dispensing machine, and generate the glue dispensing path of the glue dispensing machine. The glue dispensing path is a rectangular pattern that is 1-3cm inward from the outer edge of the SENSOR functional sheet;

[0006] The step of dispensing the outer leak-proof glue pattern is to put the ENSOR functional sheet into the positioning fixture, and then transfer it to the dispensing platform of the dispensing machine, and start the dispensing machine. The dispensing gun of the dispensing machine automatically moves along the dispensing path determined by the leak-proof glue pattern. The dispensing machine uses LOCA optical liquid glue to dispense glue on the outer edge area of ​​the front of the SENSOR functional sheet, and a closed liquid outer leak-proof glue strip with the same shape as the leak-proof glue pattern is applied to the edges of the front of the SENSOR functional sheet. The width of the liquid outer leak-proof glue strip is controlled at 1-3 cm, and the height of the liquid outer leak-proof glue strip relative to the SENSOR functional sheet is controlled at 2-3 mm, and the outer side of the liquid outer leak-proof glue strip is 0.5-1.5 cm away from the corresponding side of the SENSOR functional sheet.

[0007] External anti-leakage glue semi-curing step: A rectangular positioning chamber enclosed by the first LED cold light UV curing strips is set on the upper part of the positioning jig. The light-emitting surfaces of the first LED cold light UV curing strips face the outer sides of the liquid external anti-leakage glue strips on the corresponding sides of the SENSOR functional chip. After dispensing the glue, power is supplied to the first LED cold light UV curing strips. The four first LED cold light UV curing strips irradiate UV curing light towards the corresponding side liquid external anti-leakage glue strips respectively to perform semi-curing treatment on the anti-leakage glue pattern. The UV irradiation energy of each first LED cold light UV curing strip is controlled at 100 - 200 MJ / CM2, and the irradiation time is controlled at 3 - 5 seconds, so that the liquid external anti-leakage glue strip is in an incompletely cured state, the surface glue on the outer side of the liquid external anti-leakage glue strip turns into a preliminarily cured state, forming a semi-cured outer wall, and the basic shape and basic height of the liquid external anti-leakage glue strip remain unchanged;

[0008] King-shaped pattern dispensing step: The "King" - shaped glue pattern is made through the dispensing machine drawing software to obtain the dispensing path of the "King" - shaped glue pattern. The SENSOR functional chip is transferred to the dispensing platform of the dispensing machine. The dispensing machine uses LOCA optical liquid glue to perform dispensing in the middle area on the front side of the SENSOR functional chip. The dispensing gun automatically walks along the dispensing path determined by the "King" - shaped glue pattern, and a "King" - shaped glue pattern is coated in the middle area on the front side of the SENSOR functional chip. The height of the "King" - shaped glue pattern is controlled at 1 - 2 CM, and the total volume of the glue of the "King" - shaped glue pattern is equal to the area enclosed by the liquid external anti-leakage glue strip × the height enclosed by the liquid external anti-leakage glue strip;

[0009] Laminating and pressing glue step: The SENSOR functional chip is transferred to the pre-laminating machine, and the cover plate is pressed on top of the SENSOR functional chip. Automatic lamination is carried out through the pre-laminating machine. During the lamination process, the "King" - shaped glue pattern automatically flows towards the surroundings and fills the area enclosed by the liquid external anti-leakage glue strip, forming a LOCA glue pool within the area enclosed by the liquid external anti-leakage glue strip. The incompletely cured liquid external anti-leakage glue strip restricts the LOCA optical liquid glue within the liquid external anti-leakage glue strip. After automatic lamination, the liquid level of the LOCA glue pool is flush with the upper edge of the liquid external anti-leakage glue, and the bottom surface of the cover plate is completely flat with the liquid level of the LOCA glue pool at the same time, obtaining a pre-laminated display panel;

[0010] Curing step: Within 2 hours after completing the external anti-leakage glue semi-curing step, the laminated display panel is transferred to the UV curing machine for full curing treatment. The UV irradiation energy of the UV curing machine is controlled at 9300 - 9700 MJ / CM2, completely curing all the LOCA optical liquid glue in the liquid external anti-leakage glue strip and the LOCA glue pool. The LOCA optical liquid glue that makes up the liquid external anti-leakage glue strip and the LOCA optical liquid glue that makes up the LOCA glue pool are compounded into one body after UV curing;

[0011] The finished product is a liquid crystal display panel.

[0012] Compared with the prior art, the advantages of the present invention are: the process of the present invention is simple, it is easy to implement mass production, and the mass production cost is low. During the bonding process, the glue just overflows to the inner side of the edges of the functional sheet, and the glue just fills the gap between the cover plate and the functional sheet. In the mass production process of water-glue bonding, glue leakage of the liquid crystal display panel is effectively avoided, and manual glue wiping is no longer required. The original manual glue wiping process steps are cancelled, which reduces both personnel input and production time, speeds up production, and improves production efficiency. In particular, for the mass production of large-size liquid crystal display panels using the water-glue bonding process, the production cost is further reduced by 30% on the basis of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the dispensing pattern of the SENSOR functional sheet of the present invention.

[0014] Figure 2 It is a schematic diagram of the structure of the laminated cover plate and the sensor functional sheet.

[0015] Markings in the figure:

[0016] 1. SENSOR function chip

[0017] 11. Liquid external leak-proof tape

[0018] 12. "King" graphic glue

[0019] 13. LOCA glue pool

[0020] 2. Glue gun

[0021] 3. Positioning fixture

[0022] 31. The first LED cold light UV curing strip

[0023] 32. Second LED cold light UV curing strip

[0024] 33. Chassis

[0025] 34. Light guide cover

[0026] 35. LED cold light UV lamp board

[0027] 36. Light guide strip

[0028] 37. LED cold light UV lamp beads DETAILED DESCRIPTION

[0029] A leak-proof liquid crystal display panel water-based glue bonding process. Figure 1 and2 As shown, the following steps are included:

[0030] The steps for making the external leak-proof glue pattern are: first make the corresponding leak-proof glue pattern for the SENSOR functional sheet 1 through the drawing software of the glue dispensing machine, and generate the glue dispensing path of the glue dispensing machine. The glue dispensing path is a rectangular pattern that is indented 1-3 cm relative to the outer edge of the SENSOR functional sheet 1.

[0031] The step of dispensing the outer leak-proof glue pattern is to place the ENSOR functional sheet into the positioning fixture 3, and then transfer it to the dispensing platform of the dispensing machine, start the dispensing machine, and the dispensing gun 2 of the dispensing machine automatically moves along the dispensing path determined by the leak-proof glue pattern. The dispensing machine uses LOCA optical liquid glue to dispense glue on the outer edge area of ​​the front side of the SENSOR functional sheet 1, and apply a closed liquid outer leak-proof adhesive strip 11 with the same shape as the leak-proof glue pattern on the four edges of the front side of the SENSOR functional sheet 1. The width of the liquid outer leak-proof adhesive strip 11 is controlled at 1-3cm, and the height of the liquid outer leak-proof adhesive strip 11 relative to the SENSOR functional sheet 1 is controlled at 2-3mm, and the outer side of the liquid outer leak-proof adhesive strip 11 has a spacing of 0.5-1.5cm from the corresponding side of the SENSOR functional sheet 1.

[0032] In the semi-curing step of the outer leak-proof glue, a rectangular positioning chamber surrounded by a first LED cold light UV curing strip 31 is set on the upper part of the positioning fixture 3, and the light-emitting surfaces of the first LED cold light UV curing strip 31 are respectively facing the outer side surfaces of the liquid outer leak-proof glue strip 11 on the corresponding sides of the SENSOR functional sheet 1. After the dispensing is completed, power is provided to the first LED cold light UV curing strip 31, and the four first LED cold light UV curing strips 31 irradiate UV curing light toward the liquid outer leak-proof glue strip 11 on the corresponding side to semi-curing the leak-proof glue pattern. The UV irradiation energy of each first LED cold light UV curing strip 31 is controlled at 100-200MJ / CM2, and the irradiation time is controlled at 3-5 seconds, so that the liquid outer leak-proof glue strip 11 is in an incompletely cured state, and the surface glue on the outer side of the liquid outer leak-proof glue strip 11 is converted into a preliminary cured state to form a semi-cured outer side wall, so that the basic shape and basic height of the liquid outer leak-proof glue strip 11 remain unchanged.

[0033] The UV light emitted by the first LED cold light UV curing strip 31 is a UV light band perpendicular to the corresponding side of the liquid external leak-proof rubber strip 11. The UV light band covers the outer side surface of the corresponding side of the liquid external leak-proof rubber strip 11. The width of the liquid outer side wall formed after the semi-curing step of the external leak-proof glue is 0.5-1mm in the horizontal direction.

[0034] The first LED cold light UV curing strip 31 includes a base frame 33, a light guide cover 34 fixed to the base frame 33, and an LED cold light UV lamp board 35 fixed to the base frame 33. The LED cold light UV lamp board 35 is installed in the cavity of the light guide cover 34. A light guide light strip 36 is fixed on the back of the light guide cover 34. The light guide light strip 36 is arranged between the light-emitting surface and the LED cold light UV lamp board 35. The LED cold light UV lamp is fixed with a plurality of LED cold light UV lamp beads 37 at equal intervals. The light guide light strip 36 is integrally formed with a plurality of convex lenses arranged at equal intervals. A LED cold light UV lamp bead 37 is correspondingly arranged at the focal position behind each convex lens of the light guide light strip 36, which is used to convert the light of each LED cold light UV lamp bead 37 into parallel light and irradiate it through the light-emitting surface, so as to cure the liquid external leak-proof adhesive strip 11.

[0035] Four mounting grooves are provided on the upper part of the positioning fixture 3, and a second LED cold light UV curing strip 32 is embedded in each mounting groove. The second LED cold light UV curing strip 32 has the same structure as the first LED cold light UV curing strip 31. The top surface of each second LED cold light UV curing strip 32 is not higher than the top surface of the positioning fixture 3. The four second LED cold light UV curing strips 32 are respectively located directly below one of the side edges of the liquid outer leak-proof adhesive strip 11. The top surfaces of the four second LED cold light UV curing strips 32 are set as light-emitting surfaces. The light-emitting surfaces of the four second LED cold light UV curing strips 32 are respectively Towards the bottom surface of the corresponding side of the liquid outer leak-proof rubber strip 11, power is provided to the second LED cold light UV curing strip 32 in the semi-curing step of the outer leak-proof glue, and the second LED cold light UV curing strip 32 irradiates UV curing light toward the bottom surface of the liquid outer leak-proof rubber strip 11 respectively. The UV irradiation energy of each second LED cold light UV curing strip 32 is controlled at 100-200MJ / CM2, and the irradiation time is controlled at 3-5 seconds, so that the surface glue at the bottom of the liquid outer leak-proof rubber strip 11 is converted into a preliminary cured state to form a semi-cured bottom wall, which is bonded and fixed to the top surface of the ENSOR functional sheet.

[0036] The top surface of the positioning fixture 3 is used as the bottom surface of the positioning chamber, and the four second LED cold light UV curing strips 32 are respectively located at the four edges of the bottom surface of the positioning chamber. The light-emitting surfaces of the four first LED cold light UV curing strips 31 are respectively used as the four side surfaces of the positioning chamber. In the step of dispensing the external leak-proof glue pattern, the four side edges of the SENSOR functional sheet 1 are respectively pressed against the light-emitting surfaces of the four first LED cold light UV curing strips 31, and the light-emitting surfaces of every five first LED cold light UV curing strips 31 have a spacing of 0.5-1.5 cm from the corresponding side edges of the liquid external leak-proof glue strip 11.

[0037] The dispensing steps for the Chinese character "王" shape pattern: Use the dispensing machine's drawing software to create a glue pattern in the shape of the Chinese character "王", obtaining the dispensing path of the glue pattern in the shape of the Chinese character "王". Transfer the SENSOR functional chip 1 to the dispensing platform of the dispensing machine. The dispensing machine uses LOCA optical liquid glue to dispense glue in the middle area on the front side of the SENSOR functional chip 1. The dispensing gun 2 automatically moves along the dispensing path determined by the glue pattern in the shape of the Chinese character "王", and applies a glue pattern in the shape of the Chinese character "王" (glue 12) in the middle area on the front side of the SENSOR functional chip 1. The height of the glue pattern in the shape of the Chinese character "王" (glue 12) is controlled within 1 - 2 cm. The total volume of the glue of the glue pattern in the shape of the Chinese character "王" (glue 12) is equal to the area enclosed by the liquid outer anti-leakage glue strip 11 × the height enclosed by the liquid outer anti-leakage glue strip 11;

[0038] Set the bottom of the dispensing gun 2 to be flat, and open a glue outlet at the middle position of the bottom of the dispensing gun 2. The cross-sectional shape of the glue outlet of the dispensing gun 2 selected in the dispensing step for the outer anti-leakage glue pattern is the same as the cross-sectional shape of the liquid outer anti-leakage glue strip 11. The shape of the glue outlet of the dispensing gun 2 selected in the dispensing steps for the Chinese character "王" shape pattern is the same as the cross-sectional shape of the glue in the shape of the Chinese character "王". Determine the dispensing amount by calculating the length of the glue in the shape of the Chinese character "王", and at the same time, combine with the control of the dispensing amount by the dispensing machine to ensure precise control of the dispensing amount.

[0039] The fitting and pressing glue step: Transfer the SENSOR functional chip 1 to the pre-pressing machine, press the cover plate above the SENSOR functional chip 1, and perform automatic fitting through the pre-pressing machine. During the fitting process, the glue pattern in the shape of the Chinese character "王" (glue 12) automatically flows towards the surroundings and fills the area enclosed by the liquid outer anti-leakage glue strip 11, forming a LOCA glue pool 13 within the area enclosed by the liquid outer anti-leakage glue strip 11. The liquid outer anti-leakage glue strip 11 in an incompletely cured state restricts the LOCA optical liquid glue within the liquid outer anti-leakage glue strip 11. After automatic fitting, the liquid level of the LOCA glue pool 13 is flush with the upper edge of the liquid outer anti-leakage glue, and the bottom surface of the cover plate is completely flat with the liquid level of the LOCA glue pool 13 at the same time, obtaining a pre-fitted display panel;

[0040] The liquid outer anti-leakage glue strip 11 prevents the LOCA optical liquid glue from flowing to areas outside the liquid outer anti-leakage glue strip 11, effectively avoiding the LOCA optical liquid glue from adhering to positions such as the edge or back of the SENSOR functional chip 1. By controlling the dispensing amount of the glue pattern in the shape of the Chinese character "王" (glue 12), the dispensing amount of the glue pattern in the shape of the Chinese character "王" (glue 12) just fills the space enclosed by the liquid outer anti-leakage glue strip 11. During the fitting process, the entire bottom surface of the cover plate is just flat against the liquid level of the entire LOCA glue pool 13, avoiding overflow of the LOCA optical liquid glue.

[0041] Curing step: within 2 hours after the completion of the semi-curing step of the outer leak-proof glue, the bonded display panel is transferred to the UV curing machine for full curing treatment. The UV irradiation energy of the UV curing machine is controlled at 9300-9700MJ / CM2 to completely cure the liquid outer leak-proof glue strip 11 and all the LOCA optical liquid glue in the LOCA glue pool 13. The LOCA optical liquid glue constituting the liquid outer leak-proof glue strip 11 and the LOCA optical liquid glue constituting the LOCA glue pool 13 are compounded into one after UV curing.

[0042] In the curing step, a set of pre-curing machine parameters and a set of full-curing parameters are set in the UV curing machine. In the curing step, the UV curing machine first performs pre-curing treatment on the liquid outer leakproof adhesive strip 11 and all the LOCA optical liquid adhesive in the LOCA glue pool 13 according to the pre-curing machine parameters, and then performs full-curing treatment on the liquid outer leakproof adhesive strip 11 and all the LOCA optical liquid adhesive in the LOCA glue pool 13 according to the full-curing parameters. The pre-curing treatment time is controlled within 3-5 seconds, and the full-curing time is controlled within 30-50 seconds. In the pre-curing treatment, the UV irradiation energy of the UV curing machine is controlled within 3500±2000MJ / CM2. Through the pre-curing treatment, the surface materials of all the LOCA optical liquid adhesives in the liquid outer leakproof adhesive strip 11 and the LOCA glue pool 13 are first cured and connected into one body, and the liquid outer leakproof adhesive strip 11 and the LOCA glue pool 13 are melted into one body and inseparable from each other.

[0043] The finished product is a liquid crystal display panel.

[0044] The process of the present invention is simple, easy to implement mass production, and has low mass production cost. During the laminating process, the glue just overflows to the inner side of the edges of the functional sheet, and the glue just fills the gap between the cover plate and the functional sheet. The filling area and filling height of the LOCA optical liquid glue are determined by the liquid outer anti-leakage adhesive strip 11. The "W"-shaped pattern glue 12 can well control the flow direction, flow rate and leveling degree of the glue in each area coated with the LOCA optical liquid glue in each direction on the front side of the SENSOR functional sheet 1, so that the glue in each area of ​​the LOCA optical liquid glue flows uniformly and smoothly in the laminating process and is connected to each other. No bubbles are generated during the laminating process, and no Flow pattern, during the dispensing process, the dispensing machine itself controls the amount of glue injected and the "W"-shaped glue pattern to accurately control the amount of LOCA optical liquid glue injected, so that the LOCA optical liquid glue just perfectly fills the gap between the cover plate and the SENSOR functional sheet 1. The control of the amount of glue injected is more precise, ensuring a more stable bonding quality. During the bonding process, there is no gap between the bottom surface of the cover plate and the top surface of the SENSOR functional sheet 1, and the glue is fully filled without overflowing. In the mass production process of water-based glue bonding, it is effective to avoid glue leakage on the liquid crystal display panel, and manual glue wiping is no longer required. The original manual glue wiping process steps are cancelled, which not only reduces personnel input, but also reduces production time, speeds up production, and improves production efficiency.

[0045] For the mass production of large-size LCD panels using the water-based glue laminating process, taking a 60-inch LCD panel as an example, a medium-volume production line reduces the number of manual glue erasing workers by about 10, and reduces the manual glue erasing time by about 10-20 minutes per panel, further reducing production costs by 30% based on existing technology.

Claims

1. A leak-proof liquid crystal display panel water-based glue bonding process, characterized in that: It includes the following steps: The step of formulating the outer leak-proof glue pattern: First, use the drawing software of the dispenser to make a corresponding leak-proof glue pattern for the SENSOR functional chip, generating the dispensing path of the dispenser. The dispensing path is a rectangular pattern that is 1-3 cm inward from the outer edge of the SENSOR functional chip. The step of dispensing the outer leak-proof glue pattern: Place the SENSOR functional chip in the positioning fixture, and then transfer it to the dispensing platform of the dispenser. Start the dispenser, and the dispensing gun of the dispenser automatically walks along the dispensing path determined by the leak-proof glue pattern. The dispenser uses LOCA optical liquid glue to dispense on the outer edge area of the front side of the SENSOR functional chip, applying a closed liquid outer leak-proof glue strip with the same shape as the leak-proof glue pattern on the four peripheral edges of the front side of the SENSOR functional chip. The width of the liquid outer leak-proof glue strip is controlled within 1-3 cm, the height of the liquid outer leak-proof glue strip relative to the SENSOR functional chip is controlled within 2-3 mm, and there is a spacing of 0.5-1.5 cm between the outer side of the liquid outer leak-proof glue strip and the corresponding side of the SENSOR functional chip. In the step of semi-curing the outer leak-proof glue, a rectangular positioning chamber surrounded by the first LED cold light UV curing strip is arranged on the upper part of the positioning fixture, and the light-emitting surfaces of the first LED cold light UV curing strip are respectively oriented toward the outer side surfaces of the liquid outer leak-proof glue strip on the corresponding sides of the SENSOR functional sheet. After the glue is dispensed, power is provided to the first LED cold light UV curing strip, and the four first LED cold light UV curing strips irradiate UV curing light toward the liquid outer leak-proof glue strip on the corresponding sides, and semi-curing treatment is performed on the leak-proof glue pattern. The UV irradiation energy of each first LED cold light UV curing strip is controlled at 100-200MJ / CM 2 The irradiation time is controlled within 3-5 seconds, so that the liquid outer leak-proof rubber strip is in an incompletely cured state, and the outer surface glue of the liquid outer leak-proof rubber strip is converted into a preliminary cured state to form a semi-cured outer wall, so that the basic shape and basic height of the liquid outer leak-proof rubber strip remain unchanged; The step of dispensing the "king" character pattern: Use the drawing software of the dispenser to make a "king" character glue pattern, obtaining the dispensing path of the "king" character glue pattern. Transfer the SENSOR functional chip to the dispensing platform of the dispenser. The dispenser uses LOCA optical liquid glue to dispense in the middle area of the front side of the SENSOR functional chip, and the dispensing gun automatically walks along the dispensing path determined by the "king" character glue pattern, applying a "king" character glue pattern in the middle area of the front side of the SENSOR functional chip. The height of the "king" character glue pattern is controlled within 1-2 cm, and the total volume of the glue of the "king" character glue pattern is equal to the area enclosed by the liquid outer leak-proof glue strip × the height enclosed by the liquid outer leak-proof glue strip. The step of laminating and pressing the glue: Transfer the SENSOR functional chip to the pre-laminating machine, press the cover plate above the SENSOR functional chip, and perform automatic lamination through the pre-laminating machine. During the lamination process, the "king" character glue pattern automatically flows towards the surroundings and fills the area enclosed by the liquid outer leak-proof glue strip, forming a LOCA glue pool within the area enclosed by the liquid outer leak-proof glue strip. The liquid outer leak-proof glue strip in an incompletely cured state restricts the LOCA optical liquid glue within the liquid outer leak-proof glue strip. After automatic lamination, the liquid level of the LOCA glue pool is flush with the upper edge of the liquid outer leak-proof glue, and the bottom surface of the cover plate is completely flat with the liquid level of the LOCA glue pool, obtaining a pre-laminated display panel. Curing step: within 2 hours after the completion of the semi-curing step of the external anti-leakage glue, the bonded display panel will be transferred to the UV curing machine for full curing. The UV irradiation energy of the UV curing machine is controlled at 9300-9700MJ / CM 2 , completely solidify the liquid outer leakproof adhesive strip and all the LOCA optical liquid adhesive in the LOCA adhesive pool, and the LOCA optical liquid adhesive constituting the liquid outer leakproof adhesive strip and the LOCA optical liquid adhesive constituting the LOCA adhesive pool are compounded into one after UV curing; Finished product: Obtain a liquid crystal display panel.

2. The process for bonding liquid crystal display panels with water-based adhesive to prevent glue leakage according to claim 1, characterized in that: In the curing step, a set of pre-curing machine parameters and a set of full-curing parameters are set in the UV curing machine. In the curing step, the UV curing machine first performs pre-curing treatment on the liquid external leak-proof adhesive strip and all LOCA optical liquid adhesive in the LOCA glue pool according to the pre-curing machine parameters, and then performs full-curing treatment on the liquid external leak-proof adhesive strip and all LOCA optical liquid adhesive in the LOCA glue pool according to the full-curing parameters. The pre-curing treatment time is controlled within 3-5 seconds, and the full-curing time is controlled within 30-50 seconds. In the pre-curing treatment, the UV irradiation energy of the UV curing machine is controlled within 3500±2000MJ / CM 2 Through the pre-curing treatment, the surface materials of the liquid outer leak-proof adhesive strip and all the LOCA optical liquid adhesive in the LOCA adhesive pool are first cured and connected into one body, and the liquid outer leak-proof adhesive strip and the LOCA adhesive pool are melted into one body and are inseparable.

3. The process for bonding liquid crystal display panels with water-based adhesive to prevent glue leakage according to claim 2, characterized in that: The UV light emitted by the first LED cold light UV curing strip is a UV light band perpendicular to the corresponding side of the liquid outer leak-proof glue strip. The UV light band covers the outer side surface of the corresponding side of the liquid outer leak-proof glue strip. The width of the outer side wall formed after the outer leak-proof glue semi-curing step is 0.5-1 mm in the horizontal direction.

4. The process for bonding liquid crystal display panels with water-based adhesive to prevent glue leakage according to claim 3, characterized in that: Four mounting grooves are provided on the upper part of the positioning fixture, each mounting groove is embedded with a second LED cold light UV curing strip, the top surface of each second LED cold light UV curing strip is not higher than the top surface of the positioning fixture, the four second LED cold light UV curing strips are respectively located directly below one of the side edges of the liquid outer leak-proof adhesive strip, the top surfaces of the four second LED cold light UV curing strips are set as light-emitting surfaces, the light-emitting surfaces of the four second LED cold light UV curing strips are respectively facing the bottom surfaces of the corresponding sides of the liquid outer leak-proof adhesive strip, power is provided to the second LED cold light UV curing strips in the semi-curing step of the outer leak-proof adhesive, the second LED cold light UV curing strips irradiate UV curing light toward the bottom surface of the liquid outer leak-proof adhesive strip, and the UV irradiation energy of each second LED cold light UV curing strip is controlled at 100-200MJ / CM 2 The irradiation time is controlled within 3-5 seconds, so that the surface glue at the bottom of the liquid outer leak-proof strip is converted into a preliminary solidified state, forming a semi-solidified bottom wall, and the bottom wall is bonded and fixed to the top surface of the SENSOR functional sheet.

5. The process for bonding liquid crystal display panels with water-based adhesive to prevent glue leakage according to claim 4, characterized in that: The top surface of the positioning fixture is used as the bottom surface of the positioning chamber, and the four second LED cold light UV curing strips are respectively located at the four edges of the bottom surface of the positioning chamber, and the light-emitting surfaces of the four first LED cold light UV curing strips are respectively used as the four side surfaces of the positioning chamber. In the step of dispensing the external leak-proof glue pattern, the four side edges of the SENSOR functional sheet are respectively pressed against the light-emitting surfaces of the four first LED cold light UV curing strips, and the light-emitting surfaces of every five first LED cold light UV curing strips are spaced 0.5-1.5 cm from the corresponding side edges of the liquid external leak-proof glue strip.

6. The process for bonding liquid crystal display panels with water-based adhesive to prevent glue leakage according to claim 5, characterized in that: The first LED cold light UV curing strip includes a base frame, a light guide cover fixed to the base frame, and an LED cold light UV lamp board fixed to the base frame. The LED cold light UV lamp board is installed in the cavity of the light guide cover, and a light guide light strip is fixed on the back of the light guide cover. The light guide light strip is arranged between the light-emitting surface and the LED cold light UV lamp board. The LED cold light UV lamp is fixed with a plurality of LED cold light UV lamp beads at equal intervals. The light guide light strip is integrally formed with a plurality of convex lenses arranged at equal intervals. An LED cold light UV lamp bead is arranged at a focal position behind each convex lens of the light guide light strip, which is used to convert the light of each LED cold light UV lamp bead into parallel light and irradiate it through the light-emitting surface.

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