Thin film transistor (TFT) display screen substrate alignment film friction device

Abstract

The utility model discloses a TFT (thin film transistor) display screen substrate alignment film friction device, which belongs to the technical field of TFT liquid crystal display screen manufacture and comprises a base, electric sliding tables are fixedly mounted on two sides of the top of the base, a supporting seat is arranged between the two groups of electric sliding tables, and two sides of the supporting seat are fixedly connected with moving ends of the two groups of electric sliding tables respectively. A positioning groove is formed in the top of the supporting seat; the electric sliding table drives the positioned base plate and the oriented film layer to move, the base plate and the oriented film layer rub with the friction roller in the moving process, so that the friction feathers generate oriented grooves in the surface of the oriented film layer, the positions of the base plate and the oriented film layer can be positioned through the arrangement of the positioning grooves, and the positioning accuracy is improved. The substrate and the orientation film layer can be ejected out of the positioning groove through the auxiliary discharging assembly, so that a user can discharge the substrate and the orientation film layer conveniently, and the substrate and the orientation film layer can be ejected out of the positioning groove through the auxiliary discharging assembly after friction machining is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of TFT liquid crystal display screen manufacturing, in particular to a TFT display screen substrate orientation film friction device. Background Art

[0002] The TFT liquid crystal display manufacturing project is mainly composed of three parts, namely ARRAY project, CELL project and MODULE project. The CELL project is the process of mounting the display substrate and the color film substrate and injecting liquid crystal material between the two substrates. The above two substrates also need to undergo corresponding surface treatment (friction treatment) before mounting. The operation steps are as follows: first, apply an orientation film on the substrate, and then use a friction cloth to rub the orientation film to produce directional grooves on the orientation film layer, so that the liquid crystal material has a certain degree of guidance when injected.

[0003] A Chinese patent with announcement number CN209215822U discloses a friction device for an orientation film of a substrate of a TFT liquid crystal display screen, comprising a bracket and a fixed bottom plate, wherein the fixed bottom plate is mounted on the inner bottom end of the bracket, and the top end of the fixed bottom plate is slidably connected to a movable bottom plate, a substrate is mounted on the top end of the movable bottom plate, and an orientation film is applied to the surface of the substrate, a movable mounting plate is mounted on the inner part of the bracket at a position above the substrate, and a plurality of unit devices are mounted on the bottom end of the movable mounting plate. The utility model is provided with a fixed plate, a positioning connecting plate, a connecting rod and a positioning ring. When the overall friction device is used, the friction operation of substrates of different sizes can be effectively satisfied by assembling and using a plurality of unit devices, so that the unit devices can be standardized and mass-produced without making corresponding changes according to the size of the substrate, so as to reduce production costs.

[0004] The friction device for the orientation film of the TFT liquid crystal display substrate involved in the above patent still has some obvious shortcomings in actual use. The device moves the substrate and the orientation film by moving the bottom plate, and rubs the orientation film during the movement. However, the orientation film and the substrate are very likely to move during the friction process, resulting in changes in the direction of the grooves generated by the friction, affecting the processing quality. Therefore, we need to propose a friction device for the orientation film of the TFT display substrate. Utility Model Content

[0005] The utility model aims to provide a TFT display screen substrate orientation film friction device, which has the advantage of being able to fix the positions of the substrate and the orientation film to prevent them from shifting during the moving friction process, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a TFT display screen substrate orientation film friction device, comprising a base, electric slides are fixedly installed on both sides of the top of the base, a support seat is arranged between the two groups of the electric slides, the two sides of the support seat are respectively fixedly connected to the movable ends of the two groups of the electric slides, a positioning groove is opened on the top of the support seat, a substrate is clamped in the inner cavity of the positioning groove, an orientation film layer is coated on the surface of the substrate, an auxiliary unloading component for facilitating the ejection of the substrate from the positioning groove is installed inside the support seat, and a friction component for rubbing the orientation film layer is also installed on the top of the base.

[0007] Preferably, the auxiliary unloading assembly includes two groups of through holes opened at the bottom of the inner cavity of the positioning groove, the inner cavity of the through holes is slidably connected with a push rod, and the bottom end of the push rod passes through the positioning groove and extends to the inner cavity of the support seat.

[0008] Preferably, a top plate is fixedly mounted on the bottom end of the push rod, a compression spring is fixedly mounted on the top of the top plate and outside the push rod, and the top end of the compression spring is fixedly connected to the inner wall of the support seat.

[0009] Preferably, the friction assembly includes a friction roller arranged above the base, the surface of the friction roller is provided with a friction cloth, the surface of the friction cloth has friction feathers, a lifting assembly is arranged between the friction roller and the base, and the friction roller is movably mounted on the top of the base through the lifting assembly.

[0010] Preferably, the lifting assembly includes a fixed frame fixedly mounted on the top of the base, a lifting cylinder is fixedly mounted on the top of the fixed frame, the telescopic end of the lifting cylinder passes through the fixed frame and extends to the inner cavity of the fixed frame where a connecting frame is fixedly mounted, a detachable connecting assembly is arranged between the friction roller and the connecting frame, and the friction roller is detachably mounted on the inner cavity of the connecting frame via the detachable connecting assembly.

[0011] Preferably, the detachable connecting assembly includes a support shaft arranged in the inner cavity of the connecting frame, the friction roller is rotatably mounted on the surface of the support shaft, both ends of the support shaft pass through the connecting frame and extend to the external threaded connection of the connecting frame and are connected with a locking nut, and one side of the locking nut is in contact with the surface of the connecting frame.

[0012] Preferably, fixing grooves are provided on both sides of the fixing frame, and the surface of the supporting shaft is slidably connected to the inner cavity of the fixing groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model drives the positioned substrate and the oriented film layer to move by an electric slide, and rubs with the friction roller during the movement, so that the friction feathers generate directional grooves on the surface of the oriented film layer. The position of the substrate and the oriented film layer can be positioned by setting the positioning groove to prevent them from being offset during the friction process and causing the groove to change direction. After the friction process is completed, the substrate and the oriented film layer can be ejected from the positioning groove by an auxiliary unloading component, so that the user can unload the substrate and the oriented film layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the friction assembly of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the substrate and the orientation film layer of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the auxiliary blanking component of the utility model.

[0019] In the figure: 1. base; 2. electric slide; 3. support seat; 4. positioning groove; 5. substrate; 6. orientation film layer; 7. through hole; 8. push rod; 9. top plate; 10. compression spring; 11. friction roller; 12. friction cloth; 13. friction feather; 14. fixing frame; 15. lifting cylinder; 16. connecting frame; 17. support shaft; 18. locking nut; 19. fixing groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4 The utility model provides a TFT display screen substrate orientation film friction device, comprising a base 1, electric slides 2 are fixedly installed on both sides of the top of the base 1, a support seat 3 is arranged between the two groups of electric slides 2, the two sides of the support seat 3 are respectively fixedly connected to the moving ends of the two groups of electric slides 2, a positioning groove 4 is opened on the top of the support seat 3, a substrate 5 is clamped in the inner cavity of the positioning groove 4, and an orientation film layer 6 is coated on the surface of the substrate 5.

[0022] In this embodiment, a positioning groove 4 for positioning the substrate 5 and the orientation film layer 6 is provided on the top of the support seat 3. When it is necessary to rub the orientation film layer 6 on the surface of the substrate 5, the substrate 5 can be inserted into the inner cavity of the positioning groove 4 to prevent the substrate 5 and the orientation film layer 6 from being displaced during the rubbing process.

[0023] Preferably, an auxiliary material removal component is installed inside the support seat 3 for facilitating the ejection of the substrate 5 from the positioning groove 4. The auxiliary material removal component includes two groups of through holes 7 opened at the bottom of the inner cavity of the positioning groove 4. The inner cavity of the through hole 7 is slidably connected with a push rod 8. The bottom end of the push rod 8 passes through the positioning groove 4 and extends to the inner cavity of the support seat 3. A top plate 9 is fixedly installed at the bottom end of the push rod 8. A compression spring 10 is fixedly installed on the top of the top plate 9 and outside the push rod 8. The top end of the compression spring 10 is fixedly connected to the inner wall of the support seat 3.

[0024] After the friction processing is completed, the user can push the top plate 9 upwards, and the movement of the top plate 9 will drive the push rod 8 to move upwards to push the substrate 5 out of the positioning groove 4, so as to facilitate the unloading. In addition, when the top plate 9 is pushed upwards, the compression spring 10 will be squeezed. After the unloading is completed, the user can release the push plate. At this time, the reaction force generated by the contraction of the compression spring 10 will push the push rod 8 to reset. The setting of the through hole 7 can provide a moving space for the push rod 8.

[0025] Among them, a friction component for rubbing the oriented film layer 6 is also installed on the top of the base 1, and the friction component includes a friction roller 11 arranged above the base 1, and a friction cloth 12 is provided on the surface of the friction roller 11, and a friction feather 13 is provided on the surface of the friction cloth 12. A lifting component is arranged between the friction roller 11 and the base 1, and the friction roller 11 is movably installed on the top of the base 1 through the lifting component. The lifting component includes a fixed frame 14 fixedly installed on the top of the base 1, and a lifting cylinder 15 is fixedly installed on the top of the fixed frame 14. The telescopic end of the lifting cylinder 15 passes through the fixed frame 14 and extends to the inner cavity of the fixed frame 14, where a connecting frame 16 is fixedly installed.

[0026] Through the setting of the friction component, after positioning the substrate 5 and the orientation film layer 6, the user can open the lifting cylinder 15 through the external controller, and the telescopic end of the lifting cylinder 15 will drive the friction roller 11 to move downward through the connecting frame 16 so that its bottom position is at the same horizontal height as the top position of the orientation film layer 6. When the electric slide 2 drives the substrate 5 and the orientation film layer 6 to move, the friction roller 11 will roll on the surface of the orientation film layer 6, and the friction feathers 13 will generate directional grooves on the surface of the orientation film layer 6.

[0027] It is worth mentioning that a detachable connecting assembly is provided between the friction roller 11 and the connecting frame 16, and the friction roller 11 is detachably installed in the inner cavity of the connecting frame 16 through the detachable connecting assembly. The detachable connecting assembly includes a support shaft 17 provided in the inner cavity of the connecting frame 16, and the friction roller 11 is rotatably installed on the surface of the support shaft 17. Both ends of the support shaft 17 pass through the connecting frame 16 and extend to the external thread of the connecting frame 16 and are connected with a locking nut 18, and one side of the locking nut 18 is in contact with the surface of the connecting frame 16.

[0028] By setting up the detachable connecting assembly, the user can conveniently disassemble the friction roller 11 and replace the friction cloth 12 on its surface. During disassembly, the user can loosen the locking nut 18 and pull out the support shaft 17, and then remove the friction roller 11 to replace the friction cloth 12 on its surface.

[0029] Furthermore, fixing grooves 19 are provided on both sides of the fixing frame 14, and the surface of the support shaft 17 is slidably connected to the inner cavity of the fixing groove 19. Through the setting of the fixing groove 19, it is convenient for the user to turn the locking rod, and the support shaft 17 can be installed or removed through the fixing groove 19.

[0030] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A TFT display screen substrate alignment film rubbing device, comprising a base (1), characterized in that: Electric slides (2) are fixedly installed on both sides of the top of the base (1), a support seat (3) is arranged between the two groups of electric slides (2), and the two sides of the support seat (3) are respectively fixedly connected to the movable ends of the two groups of electric slides (2), a positioning groove (4) is opened on the top of the support seat (3), a substrate (5) is clamped in the inner cavity of the positioning groove (4), and the surface of the substrate (5) is coated with an oriented film layer (6), and an auxiliary unloading component is installed inside the support seat (3) for facilitating the ejection of the substrate (5) from the positioning groove (4), and a friction component for rubbing the oriented film layer (6) is also installed on the top of the base (1).

2. The TFT display screen substrate alignment film rubbing device according to claim 1, characterized in that: The auxiliary material removal assembly comprises two groups of through holes (7) formed at the bottom of the inner cavity of the positioning groove (4); the inner cavity of the through holes (7) is slidably connected to a push rod (8); the bottom end of the push rod (8) passes through the positioning groove (4) and extends to the inner cavity of the support seat (3).

3. The TFT display screen substrate alignment film rubbing device according to claim 2, characterized in that: A top plate (9) is fixedly mounted on the bottom end of the top rod (8), a compression spring (10) is fixedly mounted on the top of the top plate (9) and outside the top rod (8), and the top end of the compression spring (10) is fixedly connected to the inner wall of the support seat (3).

4. The TFT display screen substrate alignment film rubbing device according to claim 1, characterized in that: The friction assembly comprises a friction roller (11) arranged above a base (1); a friction cloth (12) is arranged on the surface of the friction roller (11); the surface of the friction cloth (12) has friction feathers (13); a lifting assembly is arranged between the friction roller (11) and the base (1); the friction roller (11) is movably mounted on the top of the base (1) via the lifting assembly.

5. The TFT display screen substrate alignment film rubbing device according to claim 4, characterized in that: The lifting assembly comprises a fixing frame (14) fixedly mounted on the top of the base (1); a lifting cylinder (15) is fixedly mounted on the top of the fixing frame (14); a telescopic end of the lifting cylinder (15) passes through the fixing frame (14) and extends to the inner cavity of the fixing frame (14) where a connecting frame (16) is fixedly mounted; a detachable connecting assembly is provided between the friction roller (11) and the connecting frame (16); the friction roller (11) is detachably mounted on the inner cavity of the connecting frame (16) via the detachable connecting assembly.

6. The TFT display screen substrate alignment film rubbing device according to claim 5, characterized in that: The detachable connection assembly comprises a support shaft (17) arranged in the inner cavity of the connection frame (16); the friction roller (11) is rotatably mounted on the surface of the support shaft (17); both ends of the support shaft (17) penetrate the connection frame (16) and extend to the outer thread of the connection frame (16) and are connected with a locking nut (18); one side of the locking nut (18) is in contact with the surface of the connection frame (16).

7. The TFT display screen substrate alignment film rubbing device according to claim 6, characterized in that: Both sides of the fixing frame (14) are provided with fixing grooves (19), and the surface of the support shaft (17) is slidably connected with the inner cavity of the fixing groove (19).

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