Processing device for television screen production and use method

Abstract

The invention relates to the technical field of liquid crystal display panels, and particularly discloses a processing device for television screen production, which is used for assembling the liquid crystal display panels and comprises an operation table and a clamping piece, a first sliding rail is embedded in the surface of the operation table, and a first sliding block is slidably arranged in the first sliding rail; the first sliding block is provided with a gluing piece used for assisting in forming frame sealing glue. The clamping piece comprises a mounting base, two clamping jaws are symmetrically arranged in the mounting base, and the clamping piece is also used for assisting in forming the frame sealing glue. According to the invention, by adopting the mode of side gluing and matching with the reference surface, the regularity of the cured frame sealing glue can be improved, the stability of the structure after the color film substrate and the array substrate are bonded and paired can be further improved, and the prefabricated part is used as a separator to prevent liquid crystal from being polluted, and is also used as a spraying reference of the post-coating part to prevent liquid crystal from being polluted. And the composite material can be well integrated with the prefabricated part after thermocuring.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid crystal display panels, and in particular relates to a processing device for producing television screens and a method for using the same. Background Art

[0002] The TV screen is one of the core components of a television set, playing a vital role in displaying images and providing a visual experience. Currently, most flat-panel TVs use liquid crystal display panels (LCDs). LCDs utilize the physical properties of liquid crystals to control the passage of light, thereby displaying images. LCDs consist of two parallel glass substrates with liquid crystal material sandwiched between them. When current passes through the liquid crystals, the arrangement of the liquid crystal molecules changes, altering the polarization of light and controlling the passage of light to display images.

[0003] Among them, after the color filter substrate and the array substrate are aligned, liquid crystal is poured into them to form a liquid crystal layer. This is inseparable from the bonding of the frame sealant between the color filter substrate and the array substrate. However, after the color filter substrate and the array substrate are currently aligned, the liquid crystal is easily in contact with the incompletely cured frame sealant. After long-term contact, small molecules can easily enter the liquid crystal and cause contamination, resulting in poor display conditions such as yellow edges and afterimages, affecting the picture quality of the liquid crystal display panel. Summary of the Invention

[0004] The purpose of the present invention is to provide a processing device and a method for use in the production of television screens, so as to solve the problem in the prior art that the screen needs to be pre-cured by ultraviolet light and then completely cured by thermal curing, which requires a long cycle and the small molecular substances in the liquid crystal easily enter the liquid crystal and cause pollution.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A processing device for producing television screens is used to assemble liquid crystal display panels. The liquid crystal display panels are composed of a color film substrate, an array substrate, a liquid crystal layer and a frame sealant. The device includes an operating table and a clamping member. A first slide rail is embedded and installed on the surface of the operating table. A first slider is slidably arranged in the first slide rail. A glue coating member for assisting in the formation of the frame sealant is installed on the first slider. The clamping member includes a mounting seat. Two clamping claws are symmetrically arranged in the mounting seat. The clamping member is also used to assist in the formation of the frame sealant.

[0007] Preferably, the glue coating member includes a second slide rail fixed on the top of the first slide rail, a second slide rail is slidably mounted on the second slide rail along its length direction, and nozzles are mounted in the second slide rail and pass through both sides of the second slide rail.

[0008] Preferably, the first slide rail is arranged in a U-shaped structure on the surface of the operating table and is larger than the surface area of ​​the liquid crystal display panel.

[0009] Preferably, the frame-sealing glue is specifically divided into two components, namely four prefabricated parts arranged on the inner side and a post-coating part arranged on the outer side; and the four prefabricated parts are assembled into a whole and form a rectangular structure, which is slightly smaller than the surface area of ​​the array substrate, so as to facilitate the subsequent supplementary spraying of the post-coating part, thereby forming a complete frame-sealing glue, helping the color film substrate and the array substrate to achieve alignment and bonding to complete the box-matching operation.

[0010] Preferably: the prefabricated part is pre-processed with the help of a forming mold, and is hoisted on the array substrate through a clamping part after curing. The post-coating part is formed by spraying a glue coating part on the outside of the rectangular structure composed of four prefabricated parts. In this way, when vacuum-injecting liquid crystal, the uncured post-coating part can be prevented from long-term contact with the liquid crystal, avoiding pollution and causing adverse conditions such as yellow edges and afterimages.

[0011] Preferably, the cross-section of the prefabricated portion is set to be U-shaped, and the protruding ends thereof are set to be shallower, thereby expanding the contact area between the bottom and top of the rear coating portion and the color filter substrate and the array substrate, ensuring a strong bonding effect of the rear coating portion on the color filter substrate and the array substrate after subsequent thermal curing.

[0012] Preferably, a plurality of dot-shaped grooves arranged in an array are provided on a side of the prefabricated portion facing away from the liquid crystal layer, and at least two strip-shaped grooves are provided on inner side walls of both protruding ends of the prefabricated portion.

[0013] In addition, the present invention also provides the following technical solutions:

[0014] A method for using a processing device for producing a television screen comprises the following steps:

[0015] Step 1: Place the array substrate on the operating table, use the clamping claws to pick up the four prefabricated parts assembled into a whole and place them in the center of the array substrate;

[0016] Step 2: The first slider moves along the track in sequence in the first slide rail, and the second slider is adaptively adjusted on the second slide rail, so that a layer of post-coating can be sprayed on the periphery of the four prefabricated parts using a nozzle;

[0017] Step 3: Cover the color filter substrate and complete the bonding of the color filter substrate and the array substrate. After that, the rear coating part is pre-cured by UV light and then fully cured by heat curing.

[0018] Step 4: Punch a hole in the sealant to leave an injection port, and then pour liquid crystal into the space formed by the color filter substrate, array substrate and sealant under a vacuum environment to finally form a liquid crystal layer.

[0019] Preferably, in step 1, the four prefabricated parts can be spliced ​​and fixed by bonding or clamping.

[0020] Preferably, in step 2, the array of dot grooves on the prefabricated part and the two groups of strip grooves symmetrically arranged up and down can improve the connection tightness between the prefabricated part and the post-sprayed part, reducing the risk of separation between the two later.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention changes the one-time spraying of the frame sealing glue in the prior art into an operation step of using four assembled prefabricated parts as a skeleton and then spraying a layer of the post-coating part. The spraying of the post-coating part uses the rectangular structure composed of the four prefabricated parts as a coordinate reference, which can improve the regularity of the frame sealing glue after curing. Compared with the current frame sealing glue formed by one-time spraying using the top gluing method, this solution adopts the side gluing method with a reference surface, which can avoid the distortion and twisting of the frame sealing glue, thereby improving the stability of the structure after the color filter substrate and the array substrate are bonded and boxed, and reducing the loose connection caused by uneven force.

[0023] 2. In the present invention, the cross-section of the prefabricated portion is set to be U-shaped, and the protruding ends thereof are set to be shallower. This can expand the contact area between the bottom and top of the rear coating portion and the color filter substrate and the array substrate, thereby ensuring the strong bonding effect of the rear coating portion to the color filter substrate and the array substrate after subsequent thermal curing.

[0024] 3. The present invention improves the connection tightness between the prefabricated part and the post-sprayed part by means of the dot grooves arranged in an array on the prefabricated part and the two groups of strip grooves arranged symmetrically up and down, and interlocking the joints, thereby reducing the risk of peeling between the two in the later stage.

[0025] 4. The prefabricated part of the inner layer in the present invention is prefabricated, which can avoid the contact between the injected liquid crystal and the uncured post-coating part, but directly contact the cured prefabricated part. In this way, small molecules in the uncured post-coating part, such as coupling agents, curing agents, etc., will not enter the liquid crystal and will not cause contamination of the liquid crystal, thereby greatly improving the yield rate of the liquid crystal display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a construction schematic diagram of the present invention;

[0027] Figure 2 A diagram showing the specific structure of the liquid crystal display panel of the present invention;

[0028] Figure 3 This is a schematic diagram of the state where the prefabricated part of the present invention is placed on the array substrate;

[0029] Figure 4This is a state diagram of the present invention after the glue coating member is sprayed on the periphery of the prefabricated portion on the array substrate;

[0030] Figure 5 is a three-dimensional schematic diagram of the prefabricated portion of the present invention;

[0031] Figure 6 Schematic diagram of the position of the first slide rail on the operating table of the present invention.

[0032] In the picture:

[0033] 1. Liquid crystal display panel; 11. Color filter substrate; 12. Array substrate; 13. Liquid crystal layer; 14. Frame sealant; 141. Prefabrication unit; 1411. Dot groove; 1412. Strip groove; 142. Post-coating unit;

[0034] 2. Operating table; 21. First slide rail; 22. First slide block;

[0035] 3. Clamping member; 31. Mounting seat; 32. Clamping claw;

[0036] 4. Glue coating part; 41. Second slide rail; 42. Second slide block; 43. Nozzle. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Reference Figure 1 、 Figure 2 and Figure 6As shown, the present invention provides a processing device for producing a television screen, which is used to assemble a liquid crystal display panel 1. The liquid crystal display panel 1 is composed of a color film substrate 11, an array substrate 12, a liquid crystal layer 13 and a sealing glue 14. It includes an operating table 2 and a clamping member 3. The surface of the operating table 2 is embedded with a first slide rail 21. The first slide rail 21 is arranged in a square shape on the surface of the operating table 2 and is larger than the surface area of ​​the liquid crystal display panel 1. It is convenient for the glue coating member 4 to carry out post-coating along the outer edge of the array substrate 12. 142 spraying, a first slider 22 is slidably provided in the first slide rail 21, and a glue coating member 4 for assisting in forming the sealing glue 14 is installed on the first slider 22; the glue coating member 4 includes a second slide rail 41 fixed to the top of the first slider 22, and a second slider 42 is slidably installed on the second slide rail 41 along its length direction, wherein the first slide rail 21 and the second slide rail 41 are both electric slide rails, and the first slide rail 21 is driven by a flexible drive shaft transmission method, which facilitates the first slider 22 to move along the mouth shape, and the corner setting of the first slide rail 21 is as follows Figure 6 As shown, it is set to have a curved corner with a smooth transition, which facilitates the circulation of the first slider 22 therein and avoids the occurrence of jamming. The second slide rail 41 is driven by a linear motor, and the second slider 42 is equipped with a nozzle 43 running through both sides thereof; the clamping member 3 includes a mounting seat 31, and two clamping claws 32 are symmetrically arranged in the mounting seat 31. Specifically, the clamping and releasing actions of the clamping claws 32 are realized by an electric push rod (not shown in the figure) in the mounting seat 31, which is an existing mature technology and will not be described in detail here. The clamping member 3 is also used to assist in the formation of the frame sealing glue 14.

[0039] In a further embodiment, referring to Figure 2-Figure 4 As shown, the frame sealing glue 14 is specifically divided into two components, namely four prefabricated parts 141 arranged on the inner side and the post-coating part 142 arranged on the outer side; and the four prefabricated parts 141 are assembled into a whole and form a rectangular structure, which can be used as a reference base surface for spraying the post-coating part 142. This measure adopts a side gluing method with a reference surface to replace the current one-time spraying method of top gluing, which can form a more regular frame sealing glue 14, which is convenient for better bonding of the color filter substrate 11 and the array substrate 12. The rectangular structure is slightly smaller than the surface area of ​​the array substrate 12, which is convenient for the subsequent supplementary spraying of the post-coating part 142, thereby forming a complete frame sealing glue 14, which helps the color filter substrate 11 and the array substrate 12 to achieve alignment and bonding to complete the box alignment operation.

[0040] In this embodiment, the traditional sealing glue 14 formed by one-time spraying is divided into two parts, and the post-spraying of the post-coating part 142 is based on the prefabricated part 141, which can improve the regularity of the frame sealing glue 14 after curing and forming, and facilitate the post-coating part 142 to rely on the prefabricated part 141 with a rectangular structure for spraying, so as to promote the regular formation of the frame sealing glue 14. Compared with the current frame sealing glue 14 formed by one-time spraying by the upper gluing method, this solution adopts the side gluing method with a reference surface, which can avoid the distortion and twisting of the frame sealing glue 14, thereby improving the stability of the structure after the color filter substrate 11 and the array substrate 12 are bonded together.

[0041] In a further embodiment, the prefabricated portion 141 is pre-processed with the aid of a forming mold, that is, the raw materials are injected into the mold and taken out after being cured and formed. The cured prefabricated portion 141 serves as a spraying reference for the post-coating portion 142, is reliable, will not deform, and is prefabricated and pre-processed, so it can be used immediately, which is convenient and reliable. After the prefabricated portion 141 is cured, it is hoisted on the array substrate 12 via the clamping member 3. The clamping member 3 can be set into two groups, which is convenient for hoisting the four prefabricated portions 141 that are assembled into a rectangle from both sides, ensuring that the workpiece is evenly stressed during clamping, making the clamping process more stable and reliable. The post-coating portion 142 is formed by spraying the glue coating member 4 outside the rectangular structure composed of the four prefabricated portions 141. In this way, when vacuum-injecting the liquid crystal, the uncured post-coating portion 142 can be avoided from long-term contact with the liquid crystal, thereby avoiding pollution and causing adverse conditions such as yellow edges and afterimages.

[0042] In this embodiment, the clamping part 3 can be connected to a robotic arm (not shown in the figure) to achieve the lifting and alignment release of the four assembled rectangular prefabricated parts 141. The inner layer prefabricated part 141 is prefabricated and has high structural strength. It can avoid the injected liquid crystal from contacting with the uncured post-coating part 142, but directly contacting with the cured prefabricated part 141. In this way, small molecules in the uncured post-coating part 142, such as coupling agents, curing agents, etc., will not enter the liquid crystal and will not cause contamination of the liquid crystal, thereby greatly improving the yield of the liquid crystal display panel 1 and reducing display defects such as yellow edges and afterimages.

[0043] In a further embodiment, referring to Figure 2 and Figure 5As shown, the cross section of the prefabricated portion 141 is set to be U-shaped, and its protruding ends are set to be shallower. The length of the protruding ends is approximately twice the thickness of the prefabricated portion 141, so that it can maintain the supporting capacity of the two ends for the color filter substrate 11 and the array substrate 12, and will not cause the loss of effective bonding strength between the bottom and top of the post-coating portion 142 and the color filter substrate 11 and the array substrate 12 due to excessive extension, so as to give full play to the bonding ability of the frame sealant 14 and ensure the stability after the box is assembled. That is, the prefabricated portion 141 serves as a separator to prevent the liquid crystal from being contaminated, and as a reference for the spraying of the post-coating portion 142. It can also be well integrated with the prefabricated portion 141 after thermal curing. The properties and materials of the two are consistent, and there is basically no repulsion and separation. Therefore, the contact area between the bottom and top of the post-coating portion 142 and the color filter substrate 11 and the array substrate 12 is expanded, ensuring the strong bonding effect of the post-coating portion 142 on the color filter substrate 11 and the array substrate 12 after subsequent thermal curing.

[0044] Furthermore, a plurality of dot-shaped grooves 1411 arranged in an array are provided on the side of the preformed portion 141 facing away from the liquid crystal layer 13, and at least two strip grooves 1412 are provided on the inner side walls of the protruding ends of the preformed portion 141. In this way, the connection tightness between the preformed portion 141 and the post-coating portion 142 sprayed afterward can be improved by interlocking the connection parts, thereby reducing the risk of separation between the two later. Specifically, the side of the nozzle 43 can be connected to a scraper (not shown in the figure) through a telescopic member. The scraper can be set as a metal sheet. In this way, after the nozzle 43 is assembled around the four preformed portions 141 that are rectangular, and the post-coating portion 142 is formed by spraying, the telescopic member can be controlled to extend to cause the scraper to extend to the front of the nozzle 43. Then, the first slider 22 is used to move in another circle in the first slide rail 21 to drive the scraper to spray the post-coating portion 142. For the purpose of compaction and shaping, the nozzle 43 in this circle no longer sprays glue, and the pressure generated by the scraper during the movement of the glue-coated part 4 can make the post-coating part 142 produced by the previous circle of spraying and the dot grooves 1411 and the strip grooves 1412 in the prefabricated part 141 more tightly embedded, and the colloid in the post-coating part 142 close to the end of the prefabricated part 141 is pressed into the gap between the micropores of the dot grooves 1411 and the strip grooves 1412, further improving the connection tightness between the prefabricated part 141 and the post-coating part 142 after spraying, thereby avoiding the possibility of peeling between the two later; then the telescopic part retracts, driving the scraper to retract behind the nozzle 43, making it convenient for the nozzle 43 to be put into the next spraying step to form the post-coating part 142, and the telescopic part can be specifically set to a common electric push rod, which is easy to assemble, flexible and easy to control, and highly reliable.

[0045] In this embodiment, the colloidal post-coating portion 142 is sprayed onto the prefabricated portion 141. The colloidal material in the post-coating portion 142 is embedded in the dot-shaped grooves 1411 and the strip-shaped grooves 1412. Subsequently, during the thermal curing process of the post-coating portion 142, the post-coating portion 142 can be well embedded with the prefabricated portion 141, thereby forming a single body and achieving a good fusion. Compared to the prior art method of spraying the frame sealant 14 in one step, the present invention divides the frame sealant 14 into an inner, cured prefabricated portion 141 and an outer, sprayed-first, then cured post-coating portion 142. However, during the curing process of the post-coating portion 142, the unique U-shaped structure of the prefabricated portion 141, and the arrangement of the dot-shaped grooves 1411 and the strip-shaped grooves 1412 thereon, ultimately achieve the structural effect of the frame sealant 14 sprayed in one step. Subsequently, the possibility of the prefabricated portion 141 and the post-coating portion 142 peeling off is extremely low and controllable. This is superior to the prior art in terms of construction process, liquid crystal pollution prevention, and ease of operation. At the same time, the thickness of the prefabricated part 141 only accounts for a small part of the thickness of the formed frame sealant 14, and has little effect on the bonding effect of the frame sealant 14 on the color filter substrate 11 and the array substrate 12. The advantages of the prefabricated part 141 are obvious, and the disadvantages can be ignored.

[0046] The present invention also provides a method for using a processing device for producing a television screen, comprising the following steps:

[0047] Step 1: Place the array substrate 12 on the operating table 2, and use the clamping claws 32 to clamp the four prefabricated parts 141 assembled into a whole and place them in the center of the array substrate 12;

[0048] Step 2: The first slider 22 moves along the track in the first slide rail 21 , and the second slider 42 is adaptively adjusted on the second slide rail 41 , so that a layer of post-coating portion 142 can be sprayed on the periphery of the four prefabricated portions 141 using the nozzle 43 ;

[0049] Step 3: Cover the color filter substrate 11 and complete the bonding of the color filter substrate 11 and the array substrate 12. Then, the rear coating portion 142 is pre-cured by ultraviolet light and then fully cured by thermal curing.

[0050] Step 4: Punch a hole in the sealant 14 to leave an injection port, and then pour liquid crystal into the space formed by the color filter substrate 11, the array substrate 12 and the sealant 14 under a vacuum environment to finally form a liquid crystal layer 13.

[0051] In step 1, the four prefabricated parts 141 can be spliced ​​and fixed by bonding or clamping. In step 2, the array of dot-shaped grooves 1411 and the two groups of strip-shaped grooves 1412 symmetrically arranged on the prefabricated parts 141 can improve the connection between the prefabricated parts 141 and the post-sprayed post-coating parts 142, reducing the risk of separation between the two parts later.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A processing device for producing television screens, used for assembling liquid crystal display panels, wherein the liquid crystal display panels are composed of a color filter substrate, an array substrate, a liquid crystal layer, and a frame sealant, characterized in that: It includes an operating table and a clamping member, a first slide rail is embedded in the surface of the operating table, a first slider is slidably arranged in the first slide rail, and a glue coating member for assisting in the formation of a sealing glue is installed on the first slider; the clamping member includes a mounting seat, two clamping claws are symmetrically arranged in the mounting seat, and the clamping member is also used to assist in the formation of a sealing glue.

2. A processing device for producing television screens according to claim 1, characterized in that: The glue coating component includes a second slide rail fixed on the top of the first slide rail, a second slide rail is slidably mounted on the second slide rail along its length direction, and nozzles penetrating both sides of the second slide rail are mounted in the second slide rail.

3. The processing device for producing a television screen according to claim 1, characterized in that: The first slide rail is arranged in a U-shaped structure on the surface of the operating table and is larger than the surface area of ​​the liquid crystal display panel.

4. The processing device for producing a television screen according to claim 2, characterized in that: The frame-sealing adhesive is specifically divided into two components, namely four prefabricated parts arranged on the inner side and a post-coating part arranged on the outer side; and the four prefabricated parts are assembled into a whole to form a rectangular structure, which is slightly smaller than the surface area of ​​the array substrate to facilitate the subsequent supplementary spraying of the post-coating part, thereby forming a complete frame-sealing adhesive, helping the color film substrate and the array substrate to achieve alignment and bonding to complete the box-fitting operation.

5. The processing device for producing a television screen according to claim 4, characterized in that: The prefabricated part is pre-processed with the help of a forming mold, and is hoisted on the array substrate through a clamping part after curing. The post-coating part is formed by spraying a glue coating part on the outside of the rectangular structure composed of the four prefabricated parts. In this way, when vacuum-injecting liquid crystal, the uncured post-coating part can be prevented from long-term contact with the liquid crystal, avoiding contamination and causing adverse conditions such as yellow edges and afterimages.

6. The processing device for producing a television screen according to claim 5, characterized in that: The cross section of the prefabricated portion is set to be U-shaped, and its protruding ends are set shallower, thereby expanding the contact area between the bottom and top of the rear coating portion and the color filter substrate and the array substrate, ensuring the strong bonding effect of the rear coating portion to the color filter substrate and the array substrate after subsequent thermal curing.

7. The processing device for producing a television screen according to claim 6, characterized in that: A plurality of dot-shaped grooves arranged in an array are provided on a side of the prefabricated portion facing away from the liquid crystal layer, and at least two strip-shaped grooves are provided on inner side walls of both protruding ends of the prefabricated portion.

8. A method for using a processing device for producing a television screen according to any one of claims 1 to 7, characterized in that: The steps include: Step 1: Place the array substrate on the operating table, use the clamping claws to pick up the four prefabricated parts assembled into a whole and place them in the center of the array substrate; Step 2: The first slider moves along the track in sequence in the first slide rail, and the second slider is adaptively adjusted on the second slide rail, so that a layer of post-coating can be sprayed on the periphery of the four prefabricated parts using a nozzle; Step 3: Cover the color filter substrate and complete the bonding of the color filter substrate and the array substrate. After that, the rear coating part is pre-cured by UV light and then fully cured by heat curing. Step 4: Punch a hole in the sealant to leave an injection port, and then pour liquid crystal into the space formed by the color filter substrate, array substrate and sealant under a vacuum environment to finally form a liquid crystal layer.

9. The method for using the processing device for producing television screens according to claim 8, characterized in that: In step one, the four prefabricated parts can be spliced ​​and fixed by bonding or clamping.

10. The method for using the processing device for producing television screens according to claim 8, characterized in that: In step 2, the array of dot grooves on the prefabricated part and the two groups of strip grooves symmetrically arranged up and down can improve the connection tightness between the prefabricated part and the post-sprayed part, reducing the risk of separation between the two later.

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