Alignment laminating equipment for liquid crystal display panel

Abstract

The invention discloses a liquid crystal display panel alignment fitting device which comprises vacuum press fit mechanisms, a feeding mechanism, a visual positioning mechanism and a pre-pressing mechanical arm mechanism which are connected to a supporting rack, and the two opposite sides of the pre-pressing mechanical arm mechanism are each provided with one vacuum press fit mechanism. The vacuum pressing mechanism comprises a lower pressing unit and an upper pressing unit; the lower press-fit unit is used for receiving the feeding of the first substrate and can move between the upper press-fit unit and the pre-pressing manipulator mechanism, and the upper press-fit unit can abut against the lower press-fit unit for vacuum press-fit; the feeding mechanism is used for receiving feeding of the second substrate and transferring the feeding to the position above the lower pressing unit through the pre-pressing mechanical arm mechanism. The lower pressing unit adjusts the position of the first substrate to enable the first substrate to be accurately aligned with the second substrate on the basis of visual positioning information obtained by the visual positioning mechanism, and the pre-pressing mechanical arm mechanism further pre-presses and fits the second substrate to the first substrate. According to the scheme, the waiting time of equipment can be shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid crystal display screen manufacturing equipment, and in particular relates to an alignment and bonding equipment for a liquid crystal display panel. Background Art

[0002] In the assembly (cell) process of the liquid crystal display panel, it is necessary to align and bond the thin film transistor array substrate (TFT substrate) and the color filter substrate (CF substrate) to form a liquid crystal display panel. With the development of industrial automation technology, the industry has developed some automatic alignment and bonding equipment for aligning and bonding TFT substrates and color filter substrates. The bonding process includes substrate loading, substrate alignment, pre-pressing bonding, vacuum pressure bonding and other processes. Among them, the vacuum pressure bonding process takes a relatively long time. Therefore, the efficiency of the existing automatic alignment and bonding equipment needs to be further improved. Summary of the invention

[0003] In view of this, the present invention provides an alignment and lamination device for a liquid crystal display panel to solve the problem of how to improve production efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A liquid crystal display panel alignment and bonding device, comprising a vacuum pressing mechanism, a feeding mechanism, a visual positioning mechanism and a pre-pressing robot mechanism connected to a support frame, wherein one vacuum pressing mechanism is respectively arranged on two opposite sides of the pre-pressing robot mechanism, and the vacuum pressing mechanism comprises a lower pressing unit and an upper pressing unit;

[0006] The lower pressing unit is used to receive the first substrate and is configured to be able to move between the upper pressing unit and the pre-pressing robot mechanism, and the upper pressing unit is configured to be able to press onto the lower pressing unit for vacuum pressing;

[0007] The loading mechanism is used to receive the loading of the second substrate, and the pre-pressing robot mechanism is used to grab the second substrate from the loading mechanism and transfer it to the top of the lower pressing unit;

[0008] The visual positioning mechanism is disposed between the lower pressing unit and the pre-pressing robot mechanism, and is used to perform visual positioning on the first substrate on the lower pressing unit and the second substrate on the pre-pressing robot mechanism;

[0009] The lower pressing unit adjusts the position of the first substrate to make it precisely aligned with the second substrate based on the visual positioning information obtained by the visual positioning mechanism, and the pre-pressing robot mechanism also pre-presses and bonds the second substrate to the first substrate.

[0010] In a preferred embodiment, the vacuum pressing mechanism further includes a first linear driving module, the first linear driving module is connected between the upper pressing unit and the pre-pressing robot mechanism, and the lower pressing unit is movably connected to the first linear driving module.

[0011] In a preferred solution, the first linear drive module is a double-motor linear drive module, the two vacuum pressing mechanisms share one first linear drive module, the first linear drive module is connected between the two upper pressing units, and the two lower pressing units are respectively movably connected to the first linear drive module.

[0012] In a preferred solution, the lower pressing unit includes a UVW platform, a lower pressing platform and a substrate carrier, the UVW platform is connected to the mover of the first linear drive module, the lower pressing platform is connected to the UVW platform, the lower pressing platform is provided with a lower vacuum cavity, and the substrate carrier is connected to the lower vacuum cavity;

[0013] The upper pressing unit includes a first lifting module, a second lifting module, an upper pressing platform, a main pressing platform and a vacuum exhaust pipe; the first lifting module is connected to the supporting frame through a first bracket, the second lifting module and the upper pressing platform are respectively liftably connected to the output end of the first lifting module, the upper pressing platform is provided with an upper vacuum cavity, the main pressing platform is located in the upper vacuum cavity and is liftably connected to the output end of the second lifting module, and the vacuum exhaust pipe is connected to the upper vacuum cavity and to an external vacuum pumping mechanism.

[0014] In a preferred embodiment, the lower pressing unit further comprises a heating plate, the heating plate is connected to the lower vacuum chamber, and the substrate carrier is connected to the heating plate; an avoidance groove is provided on the edge of the lower pressing platform located at the lower vacuum chamber.

[0015] In a preferred solution, the output end of the first lifting module is connected to a first driving plate, the second lifting module is liftably connected to the lower surface of the first driving plate, and the upper pressing platform is liftably connected to the first driving plate through a first connecting assembly and is located relatively below the second lifting module;

[0016] The first connecting component includes two connecting vertical plates and a connecting horizontal plate, the first ends of the two connecting vertical plates are respectively connected to the two ends of the first driving plate, the connecting horizontal plate is connected between the second ends of the two connecting vertical plates, and the upper pressing platform is connected below the connecting horizontal plate; the first connecting component also includes sliding rails connected to the side walls on both sides of the supporting frame, and the connecting vertical plates are slidably connected to the sliding rails through sliders.

[0017] In a preferred solution, the output end of the second lifting module is connected to the second driving plate, the lower surface of the second driving plate is connected to the lifting connecting shaft, the first end of the lifting connecting shaft is connected to the lower surface of the second driving plate, the second end of the lifting connecting shaft passes through the upper pressing platform and extends into the upper vacuum chamber, the pressing platform is connected to the second end of the lifting connecting shaft, and the vacuum exhaust pipe is a telescopic tube and is sleeved on the lifting connecting shaft.

[0018] In a preferred embodiment, the loading mechanism includes a loading flipping platform and a transfer mechanism, wherein the transfer mechanism is connected between the loading flipping platform and the pre-pressing robot mechanism, the loading flipping platform is used to receive the second substrate and flip it, and the transfer mechanism is used to receive the flipped second substrate from the loading flipping platform and transfer the second substrate to the pre-pressing robot mechanism.

[0019] In a preferred embodiment, the pre-pressing robot mechanism includes a gantry, a second linear drive module, a third lifting module and a grabbing assembly, the gantry is connected to the supporting frame and is erected between the vacuum pressing mechanism and the feeding mechanism, the second linear drive module is connected to the gantry, the third lifting module is movably connected to the second linear drive module, and the grabbing assembly is connected to the output end of the third lifting module.

[0020] In a preferred solution, the visual positioning mechanism includes a fourth lifting module, a third linear drive module and a fourth linear drive module connected to a supporting frame, the supporting frame is connected to the supporting frame and is located on the side of the pre-pressing robot mechanism, the fourth lifting module is connected to the bottom of the supporting frame, the third linear drive module is located at the top of the supporting frame and is liftably connected to the output end of the fourth lifting module, and the fourth linear drive module is movably connected to the output end of the third linear drive module; the output end of the fourth linear drive module is provided with a first drive block and a second drive block which can move in opposite directions to each other, the first drive block and the second drive block are respectively connected to support arms, and the end of each support arm is connected to a first CCD camera with a lens facing upward and a second CCD camera with a lens facing downward.

[0021] The alignment and bonding equipment for liquid crystal display panels provided by the embodiment of the present invention has a vacuum pressing mechanism arranged on two opposite sides of a pre-pressing robot mechanism, and the lower pressing unit in the vacuum pressing mechanism can move between the upper pressing unit and the pre-pressing robot mechanism, and has two vacuum pressing stations that can share a loading mechanism, a visual positioning mechanism and a pre-pressing robot mechanism. When one of the vacuum pressing mechanisms is performing a vacuum pressure-maintaining bonding operation, the equipment can simultaneously perform substrate loading, substrate alignment, substrate pre-pressing bonding and vacuum pressure-maintaining bonding operations for the other vacuum pressing mechanism, thereby reducing the waiting time of the equipment and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top view of the structure of the alignment and bonding device in the present invention;

[0023] Figure 2 is a three-dimensional diagram of the alignment and lamination device in the present invention;

[0024] Figure 3 is a three-dimensional diagram of the alignment and laminating device of the present invention from another perspective;

[0025] Figure 4 It is a diagram of the connection structure between the lower pressing unit and the first linear driving module in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the lower pressing unit in the present invention;

[0027] Figure 6 It is a structural schematic diagram of the upper pressing unit in the present invention;

[0028] Figure 7 is a structural schematic diagram of the upper pressing unit in the present invention from another perspective;

[0029] Figure 8 is a cross-sectional view of the upper pressing unit in the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the pre-pressing manipulator mechanism in the present invention;

[0031] Fig.10 It is a structural schematic diagram of the visual positioning mechanism in the present invention;

[0032] Fig.11 is a top view of the visual positioning mechanism in the present invention;

[0033] Fig.12 It is a structural schematic diagram of the feeding turning platform in the present invention;

[0034] Fig.13 It is a structural schematic diagram of the transfer mechanism in the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present invention clearer, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the present invention shown in the accompanying drawings and described according to the accompanying drawings are merely exemplary, and the present invention is not limited to these embodiments.

[0036] It should be noted that the same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0038] An embodiment of the present invention provides a liquid crystal display panel alignment and bonding device, referring to Figures 1 to 13 The alignment and bonding equipment mainly includes a supporting frame 1 and a vacuum pressing mechanism 2, a feeding mechanism 3, a visual positioning mechanism 4 and a pre-pressing robot mechanism 5 connected to the supporting frame 1. One vacuum pressing mechanism 2 is respectively arranged on the opposite sides of the pre-pressing robot mechanism 5.

[0039] The vacuum lamination mechanism 2 includes a lower lamination unit 21 and an upper lamination unit 22. The lower lamination unit 21 is used to receive the loading of the first substrate 100 and is configured to be able to move between the upper lamination unit 22 and the pre-pressing robot mechanism 5, and the upper lamination unit 22 is configured to be able to press onto the lower lamination unit 21 for vacuum lamination. The loading mechanism 3 is used to receive the loading of the second substrate 200, and the pre-pressing robot mechanism 5 is used to grab the second substrate 200 from the loading mechanism 3 and transfer it to the top of the lower lamination unit 21. The visual positioning mechanism 4 is arranged between the lower lamination unit 21 and the pre-pressing robot mechanism 5, and is used to visually position the first substrate 100 on the lower lamination unit 21 and the second substrate 200 on the pre-pressing robot mechanism 5. The lower pressing unit 21 adjusts the position of the first substrate 100 to precisely align it with the second substrate 200 based on the visual positioning information obtained by the visual positioning mechanism 4 , and the pre-pressing robot mechanism 5 also pre-presses and bonds the second substrate 200 to the first substrate 100 .

[0040] In this embodiment, the first substrate 100 is a thin film transistor array substrate (TFT substrate), and the second substrate 200 is a color film substrate (CF substrate).

[0041] In a specific solution, the vacuum pressing mechanism 2 also includes a first linear drive module 23, which is connected between the upper pressing unit 22 and the pre-pressing robot mechanism 5, and the lower pressing unit 21 is movably connected to the first linear drive module 23. When the first substrate 100 is loaded, the first linear drive module 23 drives the lower pressing unit 21 to move out from under the upper pressing unit 22 to facilitate loading. After the first substrate 100 is loaded, the first linear drive module 23 drives the lower pressing unit 21 to move to the bottom of the pre-pressing robot mechanism 5 to perform subsequent visual positioning, alignment adjustment, and pre-pressing and bonding operations. After the pre-pressing and bonding is completed, the first linear drive module 23 drives the lower pressing unit 21 to move to the bottom of the upper pressing unit 22 to perform subsequent vacuum pressure-maintaining bonding operations.

[0042] As a preferred solution, in this embodiment, Figure 3 and Figure 4As shown, the first linear drive module 23 is a double-motor linear drive module, the two vacuum pressing mechanisms 2 share one first linear drive module 23, the first linear drive module 23 is connected between the two upper pressing units 22, the first linear drive module 23 passes under the pre-pressing robot mechanism 5, the two lower pressing units 21 are respectively and movably connected to the first linear drive module 23, and each of the lower pressing units 21 can independently move between the corresponding upper pressing unit 22 and the pre-pressing robot mechanism 5.

[0043] Specifically, Figure 5 As shown, the lower pressing unit 21 includes a UVW platform 211, a lower pressing platform 212 and a substrate carrier 213. The UVW platform 211 is connected to the mover of the first linear drive module 23, the lower pressing platform 212 is connected to the UVW platform 211, the lower pressing platform 212 is provided with a lower vacuum cavity 214, and the substrate carrier 213 is connected to the lower vacuum cavity 214. The substrate carrier 213 is a vacuum adsorption platform, which fixes the first substrate 100 loaded on the upper side by vacuum adsorption. The lower pressing platform 212 is used as a supporting structure. When performing vacuum pressure bonding, the upper pressing unit 22 is pressed against the surface of the lower pressing platform 212 to seal the lower vacuum cavity 214 therein. The UVW platform 211 is used to adjust the positions of the lower pressing platform 212 and the substrate stage 213 thereon, and further adjust the specific position of the first substrate 100 on the substrate stage 213, so that the first substrate 100 and the second substrate 200 can be accurately aligned.

[0044] In this embodiment, the lower lamination unit 21 further includes a heating plate 215, and the heating plate 215 is connected to the lower vacuum chamber 214, and the substrate carrier 213 is connected to the heating plate 215. When vacuum pressure bonding is performed, the heating plate 215 heats the substrate carrier 213, and then heats the first substrate 100, which can improve the bonding efficiency. Furthermore, the lower lamination platform 212 is provided with an avoidance groove 216 at the edge of the lower vacuum chamber 214. Usually, some circuit modules are connected to the periphery of the TFT substrate. When vacuum pressure bonding is performed, the avoidance groove 216 can be used to accommodate the circuit module.

[0045] Specifically, Figure 3 , Figures 6 to 8As shown, the upper pressing unit 22 mainly includes a first lifting module 221, a second lifting module 222, an upper pressing platform 223, a main pressing platform 224 and a vacuum exhaust pipe 225. The first lifting module 22 is connected to the support frame 1 through a first bracket 220, the second lifting module 222 and the upper pressing platform 223 are respectively connected to the output end of the first lifting module 221 in a liftable manner, the upper pressing platform 223 is provided with an upper vacuum cavity 226, the main pressing platform 224 is located in the upper vacuum cavity 226 and is connected to the output end of the second lifting module 222 in a liftable manner, and the vacuum exhaust pipe 225 is connected to the upper vacuum cavity 226 and is connected to an external vacuum pumping mechanism.

[0046] When the upper lamination unit 22 is pressed onto the lower lamination unit 21 for vacuum pressure-maintaining lamination, the upper lamination platform 223 is pressed onto the lower lamination platform 212, the upper vacuum chamber 226 and the lower vacuum chamber 214 are combined to form a closed chamber, the external vacuum pumping mechanism evacuates the closed chamber through the vacuum exhaust pipe 225 to form a vacuum lamination environment, and the main pressing platform 224 is pressed onto the pre-laminated second substrate 200 to provide lamination pressure. Among them, the first lifting module 221 drives the lifting and lowering of the second lifting module 222 and the upper lamination platform 223, so that the upper lamination platform 223 and the lower lamination platform 212 are hard-to-hard lamination, and at the same time, the second lifting module 222 can independently drive the lifting and lowering of the main pressing platform 224, and can adjust the pressure applied by the main pressing platform 224 on the second substrate 200, adjust the lamination pressure during vacuum pressure-maintaining lamination, and avoid excessive pressure and damage to the substrate.

[0047] It should be noted that Figure 3 and Figure 7 In the upper pressing unit 22 shown in the figure, in order to better illustrate the structural components inside the first bracket 220, some structural components that connect the first bracket 220 and the supporting frame 1 are omitted in the figure.

[0048] In this embodiment, the output end of the first lifting module 221 is connected to the first driving plate 227, the second lifting module 222 is liftably connected to the lower surface of the first driving plate 227, and the upper pressing platform 223 is liftably connected to the first driving plate 227 through the first connecting component 6 and is located relatively below the second lifting module 222.

[0049] The first connection assembly 6 includes two connection vertical plates 61 and a connection horizontal plate 62, the first ends of the two connection vertical plates 61 are respectively connected to the two ends of the first driving plate 227, the connection horizontal plate 62 is connected between the second ends of the two connection vertical plates 61, and the upper pressing platform 223 is connected below the connection horizontal plate 62. Further, the first connection assembly 6 also includes a slide rail 63 connected to the side walls of the support frame 1, and the connection vertical plates 61 are slidably connected to the slide rail 63 through a slider 64. By setting the first connection assembly 6, the lifting and lowering drive of the upper pressing platform 223 can be made more stable.

[0050] Among them, a plurality of guide posts 65 are slidably connected to the connecting transverse plate 62, and the plurality of guide posts 65 are arranged on the connecting transverse plate 62, and the upper pressing platform 223 is connected to the lower ends of the plurality of guide posts 65. Furthermore, the guide posts 64 are provided with limit portions 66 on both sides of the connecting transverse plate 62. By providing the guide posts 65 and the corresponding limit portions 66, the lifting and lowering drive of the upper pressing platform 223 has a certain buffer stroke.

[0051] In this embodiment, the output end of the second lifting module 222 is connected to the second driving plate 228 , and the main pressing platform 224 is connected to the lower surface of the second driving plate 228 in a liftable manner.

[0052] Further, the lower surface of the second driving plate 228 is connected with a lifting connecting shaft 229, the first end of the lifting connecting shaft 229 is connected to the lower surface of the second driving plate 228, the second end of the lifting connecting shaft 229 passes through the upper pressing platform 223 and extends into the upper vacuum chamber 226, the main pressing platform 224 is connected to the second end of the lifting connecting shaft 229, and the vacuum exhaust pipe 225 is a telescopic pipe and is sleeved on the lifting connecting shaft 229. That is, a through hole (not shown in the drawings) is provided on the upper pressing platform 223, the second end of the lifting connecting shaft 229 extends into the upper vacuum chamber 226 through the through hole, thereby realizing the lifting and lowering drive of the main pressing platform 224 located in the upper vacuum chamber 226, and the vacuum exhaust pipe 225 is sleeved on the lifting connecting shaft 229, and the through hole is used as a gas channel for vacuuming.

[0053] Specifically, Fig. 9As shown, the pre-pressing robot mechanism 5 includes a gantry 51, a second linear drive module 52, a third lifting module 53 and a grabbing assembly 54, the gantry 51 is connected to the supporting frame 1 and is erected between the vacuum pressing mechanism 2 and the feeding mechanism 3, the second linear drive module 52 is connected to the gantry 51, the third lifting module 53 is movably connected to the second linear drive module 52, and the grabbing assembly 54 is connected to the output end of the third lifting module 53.

[0054] The grabbing assembly 54 is used to grab the second substrate 200, and the grabbing assembly 54 is, for example, a vacuum adsorption grabbing assembly. The third lifting module 53 is used to drive the lifting of the grabbing assembly 54, and the second linear driving module 52 drives the third lifting module 53 to move, thereby driving the grabbing assembly 54 to move, thereby the second substrate 200 grabbed from the feeding mechanism 3 can be transferred to the top of the lower pressing unit 21.

[0055] Specifically, Figure 1 , Fig.10 and Fig.11 As shown, the visual positioning mechanism 4 includes a fourth lifting module 42, a third linear drive module 43 and a fourth linear drive module 44 connected to a support frame 41. The support frame 41 is connected to the support frame 1 and is located on the side of the pre-pressing manipulator mechanism 5, the fourth lifting module 42 is connected to the bottom of the support frame 41, the third linear drive module 43 is located at the top of the support frame 41 and is liftably connected to the output end of the fourth lifting module 42, and the fourth linear drive module 44 is movably connected to the output end of the third linear drive module 43. Among them, the output end of the fourth linear drive module 44 is provided with a first drive block 441 and a second drive block 442 that can move in opposite directions to each other, the first drive block 441 and the second drive block 442 are respectively connected to support arms 45, and the end of each support arm 45 is connected to a first CCD camera 46 with a lens facing upward and a second CCD camera 47 with a lens facing downward.

[0056] When the lower pressing unit 21 is loaded with the first substrate 100 and moves to the bottom of the pre-pressing robot mechanism 5, and the pre-pressing robot mechanism 5 grabs the second substrate 200 and transfers it to the top of the lower pressing unit 21, the third linear driving module 43 drives the support arm 45 to move between the lower pressing unit 21 and the pre-pressing robot mechanism 5, and the second CCD camera 47 with a lens facing downward connected to the support arm 45 performs visual positioning on the first substrate 100, and the first CCD camera 46 with a lens facing upward connected to the support arm 45 performs visual positioning on the second substrate 200. Based on the above visual positioning information, the lower pressing unit 21 adjusts the position of the first substrate 100 so that it is precisely aligned with the second substrate 200. After the alignment is completed, the third linear driving module 43 drives the support arm 45 to withdraw from the position between the lower pressing unit 21 and the pre-pressing robot mechanism 5, and then the pre-pressing robot mechanism 5 pre-presses and bonds the second substrate 200 to the first substrate 100.

[0057] Among them, the fourth lifting module 42 is mainly used to adjust the height of the first CCD camera 46 and the second CCD camera 47, and the fourth linear drive module 44 is mainly used to adjust the distance between the two first CCD cameras 46 and the two second CCD cameras 47, so that it can be suitable for visual positioning of substrates of different specifications.

[0058] As shown in the above-mentioned visual positioning mechanism 4, the second CCD camera 47 for visually positioning the first substrate 100 and the first CCD camera 46 for visually positioning the second substrate 200 are synchronously displacement driven and can share the same reference position, thereby making the alignment adjustment of the first substrate 100 and the second substrate 200 more precise.

[0059] In this embodiment, as 1 and Figure 2 As shown, the loading mechanism 3 includes a loading flip platform 31 and a transfer mechanism 32, the transfer mechanism 32 is connected between the loading flip platform 31 and the pre-pressing robot mechanism 5, the loading flip platform 31 is used to receive the second substrate 200 and flip it, and the transfer mechanism 32 is used to receive the flipped second substrate 200 from the loading flip platform 31 and transfer the second substrate 200 to the pre-pressing robot mechanism 5.

[0060] Specifically, Fig.12As shown, the loading and turning platform 31 includes a second bracket 311, a fifth lifting module 312, a turning drive motor 313 and a turning table 314. The second bracket 311 is connected to the supporting frame 1, the fifth lifting module 312 is connected to the second bracket 311, the turning drive motor 313 is connected to the output end of the fifth lifting module 312, and the turning table 314 is connected to the output end of the turning drive motor 313.

[0061] The flip table 314 is a vacuum adsorption platform. The flip table 314 receives the second substrate 200 and adsorbs and fixes it. The flip drive motor 313 drives the flip table 314 to flip so that the bonding surface of the second substrate 200 faces downward. The fifth lifting module 312 drives the flip drive motor 313 to descend, driving the flip table 314 to deliver the second substrate 200 to the transfer mechanism 32 below.

[0062] Specifically, Fig.13 As shown, the transfer mechanism 32 includes a carrying platform 321 and a fifth linear drive module 322, the fifth linear drive module 322 is connected between the loading and turning platform 31 and the pre-pressing robot mechanism 5, the carrying platform 321 is movably connected to the fifth linear drive module 322, and the fifth linear drive module 322 can drive the carrying platform 321 to move between the loading and turning platform 31 and the pre-pressing robot mechanism 5, thereby realizing the transfer of the second substrate 200 to the pre-pressing robot mechanism 5.

[0063] The alignment and lamination equipment provided in the above embodiment is used to perform alignment and lamination operations on a TFT substrate and a CF substrate, and the process includes the following steps:

[0064] S1 , loading the TFT substrate onto the lower pressing unit 21 of the first vacuum pressing mechanism 2 .

[0065] S2 , driving the lower pressing unit 21 loaded with the TFT substrate to move to below the first end of the pre-pressing robot mechanism 5 .

[0066] S3 , loading the CF substrate onto the loading and flipping platform 31 , and the loading and flipping platform 31 flips the CF substrate and then sends it to the transfer mechanism 32 .

[0067] S4 : The transfer mechanism 32 transfers the CF substrate to below the second end of the pre-pressing robot mechanism 5 .

[0068] S5 , the pre-pressing robot mechanism 5 grabs the CF substrate from the transfer mechanism 32 at the second end, and moves to the first end thereof so that the CF substrate is located above the TFT substrate.

[0069] S6, the visual positioning mechanism 4 drives the first CCD camera 46 and the second CCD camera 47 to move between the lower pressing unit 21 and the pre-pressing robot mechanism 5, and the CF substrate on the pre-pressing robot mechanism 5 is positioned through the image information obtained by the first CCD camera 46, and the TFT substrate on the lower pressing unit 21 is positioned through the image information obtained by the second CCD camera 47.

[0070] S7. The lower pressing unit 21 adjusts the position of the TFT substrate to be precisely aligned with the CF substrate based on the visual positioning information of the above step S6.

[0071] S8. After the alignment is completed, the visual positioning mechanism 4 drives the first CCD camera 46 and the second CCD camera 47 to withdraw from the position between the lower pressing unit 21 and the pre-pressing robot mechanism 5, and the pre-pressing robot mechanism 5 pre-presses and bonds the CF substrate to the TFT substrate.

[0072] S9, after the pre-pressing and laminating is completed, the lower pressing unit 21 is driven to move to the bottom of the upper pressing unit 22, and the upper pressing unit 22 is driven to press onto the lower pressing unit 21 to perform vacuum pressure-maintaining laminating.

[0073] S10 , while the first vacuum laminating mechanism 2 is performing vacuum pressure-maintaining laminating operation, the TFT substrate is loaded onto the lower laminating unit 21 of the second vacuum laminating mechanism 2 .

[0074] S11, repeat the above steps S2 to S9, and also perform vacuum pressure-maintaining lamination operation in the second vacuum laminating mechanism 2.

[0075] In the alignment and bonding equipment for the liquid crystal display panel provided in the above embodiment, a vacuum pressing mechanism is respectively arranged on the two opposite sides of the pre-pressing robot mechanism, and the lower pressing unit in the vacuum pressing mechanism can move between the upper pressing unit and the pre-pressing robot mechanism, and has two vacuum pressing stations that can share a loading mechanism, a visual positioning mechanism and a pre-pressing robot mechanism. When one of the vacuum pressing mechanisms is performing a vacuum pressure-maintaining bonding operation, the equipment can simultaneously perform substrate loading, substrate alignment, substrate pre-pressing bonding and vacuum pressure-maintaining bonding operations for the other vacuum pressing mechanism, thereby reducing the waiting time of the equipment and improving production efficiency.

[0076] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A liquid crystal display panel alignment and bonding device, characterized in that: It includes a vacuum pressing mechanism, a feeding mechanism, a visual positioning mechanism and a pre-pressing manipulator mechanism connected to a supporting frame, wherein one vacuum pressing mechanism is respectively arranged on two opposite sides of the pre-pressing manipulator mechanism, and the vacuum pressing mechanism includes a lower pressing unit and an upper pressing unit; The lower pressing unit is used to receive the first substrate and is configured to be able to move between the upper pressing unit and the pre-pressing robot mechanism, and the upper pressing unit is configured to be able to press onto the lower pressing unit for vacuum pressing; The loading mechanism is used to receive the loading of the second substrate, and the pre-pressing robot mechanism is used to grab the second substrate from the loading mechanism and transfer it to the top of the lower pressing unit; The visual positioning mechanism is disposed between the lower pressing unit and the pre-pressing robot mechanism, and is used to perform visual positioning on the first substrate on the lower pressing unit and the second substrate on the pre-pressing robot mechanism; The lower pressing unit adjusts the position of the first substrate to make it precisely aligned with the second substrate based on the visual positioning information obtained by the visual positioning mechanism, and the pre-pressing robot mechanism also pre-presses and bonds the second substrate to the first substrate.

2. The alignment and laminating device according to claim 1, characterized in that: The vacuum pressing mechanism further includes a first linear driving module, which is connected between the upper pressing unit and the pre-pressing robot mechanism, and the lower pressing unit is movably connected to the first linear driving module.

3. The alignment and laminating device according to claim 2, characterized in that: The first linear drive module is a double-motor linear drive module, the two vacuum pressing mechanisms share one first linear drive module, the first linear drive module is connected between the two upper pressing units, and the two lower pressing units are respectively movably connected to the first linear drive module.

4. The alignment and laminating device according to claim 2, characterized in that: The lower pressing unit comprises a UVW platform, a lower pressing platform and a substrate carrier, the UVW platform is connected to the mover of the first linear drive module, the lower pressing platform is connected to the UVW platform, the lower pressing platform is provided with a lower vacuum cavity, and the substrate carrier is connected to the lower vacuum cavity; The upper pressing unit includes a first lifting module, a second lifting module, an upper pressing platform, a main pressing platform and a vacuum exhaust pipe; the first lifting module is connected to the supporting frame through a first bracket, the second lifting module and the upper pressing platform are respectively liftably connected to the output end of the first lifting module, the upper pressing platform is provided with an upper vacuum cavity, the main pressing platform is located in the upper vacuum cavity and is liftably connected to the output end of the second lifting module, and the vacuum exhaust pipe is connected to the upper vacuum cavity and to an external vacuum pumping mechanism.

5. The alignment and laminating device according to claim 4, characterized in that: The lower pressing unit further comprises a heating plate, the heating plate is connected to the lower vacuum chamber, the substrate carrier is connected to the heating plate; an avoidance groove is provided on the edge of the lower pressing platform located at the lower vacuum chamber.

6. The alignment and laminating device according to claim 4, characterized in that: The output end of the first lifting module is connected to the first driving plate, the second lifting module is liftably connected to the lower surface of the first driving plate, and the upper pressing platform is liftably connected to the first driving plate through a first connecting assembly and is located relatively below the second lifting module; The first connecting component includes two connecting vertical plates and a connecting horizontal plate, the first ends of the two connecting vertical plates are respectively connected to the two ends of the first driving plate, the connecting horizontal plate is connected between the second ends of the two connecting vertical plates, and the upper pressing platform is connected below the connecting horizontal plate; the first connecting component also includes sliding rails connected to the side walls on both sides of the supporting frame, and the connecting vertical plates are slidably connected to the sliding rails through sliders.

7. The alignment and laminating device according to claim 4, characterized in that: The output end of the second lifting module is connected to the second driving plate, the lower surface of the second driving plate is connected to the lifting connecting shaft, the first end of the lifting connecting shaft is connected to the lower surface of the second driving plate, the second end of the lifting connecting shaft passes through the upper pressing platform and extends into the upper vacuum chamber, the pressing platform is connected to the second end of the lifting connecting shaft, and the vacuum exhaust pipe is a telescopic tube and is sleeved on the lifting connecting shaft.

8. The alignment and laminating device according to claim 1, characterized in that: The loading mechanism includes a loading flipping platform and a transfer mechanism, wherein the transfer mechanism is connected between the loading flipping platform and the pre-pressing robot mechanism, the loading flipping platform is used to receive the loading of the second substrate and flip it, and the transfer mechanism is used to receive the flipped second substrate from the loading flipping platform and transfer the second substrate to the pre-pressing robot mechanism.

9. The alignment and laminating device according to claim 1, characterized in that: The pre-pressing robot mechanism includes a gantry, a second linear drive module, a third lifting module and a grabbing assembly. The gantry is connected to the supporting frame and is erected between the vacuum pressing mechanism and the feeding mechanism. The second linear drive module is connected to the gantry. The third lifting module is movably connected to the second linear drive module. The grabbing assembly is connected to the output end of the third lifting module.

10. The alignment and laminating device according to any one of claims 1 to 9, characterized in that: The visual positioning mechanism includes a fourth lifting module, a third linear drive module and a fourth linear drive module connected to a support frame, wherein the support frame is connected to the support frame and is located on the side of the pre-pressing manipulator mechanism, the fourth lifting module is connected to the bottom of the support frame, the third linear drive module is located at the top of the support frame and is liftably connected to the output end of the fourth lifting module, and the fourth linear drive module is movably connected to the output end of the third linear drive module; The output end of the fourth linear drive module is provided with a first drive block and a second drive block which can move in opposite directions to each other, the first drive block and the second drive block are respectively connected to a support arm, and the end of each support arm is connected to a first CCD camera with a lens facing upward and a second CCD camera with a lens facing downward.

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