A flexible OLED screen hot-pressing bonding device

Abstract

This utility model relates to the field of screen hot pressing technology and discloses a flexible OLED screen hot pressing bonding device, including a processing table, an extension table on the back of the processing table, a limiting transmission component on the top of the processing table, a hot pressing component on the back of the top of the processing table, a screen on the top of the limiting transmission component, and a bonding substrate on the top of the screen. This flexible OLED screen hot pressing bonding device, by incorporating the hot pressing component, allows the screen and bonding substrate to move downwards when they are near the back end and below the hot pressing head and heat-conducting plate. Before moving, internal heating wires can be activated for heating, and a spring assembly stabilizes the pressure. Furthermore, a phase change material is provided on the front side, which helps maintain the temperature of the heat-conducting plate for a period of time, facilitating uniform bonding of the flexible OLED screen.

Description

Technical Field

[0001] This utility model relates to the field of screen hot pressing technology, specifically a flexible OLED screen hot pressing bonding device. Background Technology

[0002] Flexible OLED screens have become the mainstream display technology in fields such as smartphones, smart wearables, and automotive displays due to their advantages such as flexibility, thinness, high color gamut, and low power consumption. Hot-press bonding is the core process in the production of flexible OLED screens, which requires the flexible OLED panel to be precisely bonded to the touch layer and protective layer under high temperature and pressure using optical adhesive.

[0003] Existing flexible OLED screen hot-pressing bonding equipment uses a heating plate and a driving component to drive the hot pressing. However, the hot pressing component does not have an elastic connector between the driving mechanism and the hot pressing mechanism, which makes it impossible to stabilize the pressure. It also does not have a phase change material, which makes it impossible to keep the temperature of the heat-conducting plate stable for a period of time. This is not conducive to the uniform bonding of the flexible OLED screen and the performance is not good during use. This needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a flexible OLED screen hot-press bonding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flexible OLED screen hot-press bonding device, including a processing table, an extension table on the back of the processing table, a limiting transmission component on the top of the processing table, a hot-pressing component on the back of the top of the processing table, a screen on the top of the limiting transmission component, and a bonding substrate on the top of the screen.

[0006] The hot pressing assembly includes a connecting platform, which is fixedly connected to the surface of the processing table near the back. A placement plate is fixedly connected to the front of the connecting platform, and a hydraulic telescopic rod is fixedly connected to the bottom of the placement plate. A connecting cable is fixedly connected to the side of the hydraulic telescopic rod, and a connecting round seat is fixedly connected to the surface of the hydraulic telescopic rod. A limit seat is fixedly connected to the bottom of the connecting round seat, and a limit slider is fixedly connected to the bottom of the hydraulic telescopic rod. A connecting seat is fixedly connected to the bottom of the limit slider, and an inner spring is fixedly connected to the top of the connecting seat. A hot pressing head is fixedly connected to the bottom of the inner spring, and a placement frame is fixedly connected to both sides of the bottom of the inside of the hot pressing head. A heating wire is fixedly connected to the side of the placement frame, and a heat-conducting pressure plate is connected to the bottom of the heating wire. The heat-conducting pressure plate is fixedly connected to the bottom of the inside of the hot pressing head, and a phase change material placement groove is fixedly connected to the front of the hot pressing head.

[0007] Preferably, the limiting transmission assembly includes a limiting plate, a drive motor, and a conveyor belt. The limiting plate is fixedly connected to both sides of the top of the processing table, and the drive motor is fixedly connected to the inside left side of the processing table near the top.

[0008] Preferably, the top of the extension table is flush with the top of the processing table.

[0009] Preferably, the width of the limiting slider is adapted to the inner diameter of the limiting seat, and the length of the inner spring is greater than the width of the connecting seat.

[0010] Preferably, the interior of the hot press head has a rectangular hollowed-out groove, which serves to house the internal mounting frame, heating wire, and heat-conducting pressure plate hot pressing mechanism.

[0011] Preferably, the output shaft of the drive motor is fixedly connected to a rotating rod, and a conveying roller is fixedly connected to the surface of the rotating rod.

[0012] Preferably, the conveyor belt is driven to the surface of the conveyor rollers, and the inner back of the conveyor belt is driven to the transmission rollers.

[0013] Preferably, the limiting slider is slidably connected to the inside of the limiting seat, and the limiting slider slides against the inside of the limiting seat, which can avoid the displacement, ensure the vertical movement of the hot pressing mechanism, and ensure the quality of pressing.

[0014] Preferably, a bearing is fixedly connected to the inside right side of the processing table, and the right side of the surface of the rotating rod is fixedly connected to the inner ring of the bearing. The bearing ensures that the rotating rod rotates smoothly and avoids the rotating rod being suspended in the air, which would affect the stability of the rotation.

[0015] Preferably, the number of hydraulic telescopic rods is five, and the five hydraulic telescopic rods are evenly distributed at the bottom of the placement plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This flexible OLED screen hot-press bonding equipment is equipped with a hot-press component. When the screen and the bonding substrate move to the position near the back end and are below the hot-press head and the heat-conducting plate, the hydraulic telescopic rod can be activated to drive the hot-press head and the heat-conducting plate downward. Before moving, the internal heating wire can be activated to heat the screen. The pressure can be stabilized with the spring component. Furthermore, the front side is equipped with a phase change material, which can keep the temperature of the heat-conducting plate stable for a period of time, which is beneficial to the uniform bonding of the flexible OLED screen.

[0017] 2. This flexible OLED screen hot pressing bonding equipment, by setting a limit transmission component, places the screen to be pressed and the bonding substrate on the top of the conveyor belt, and ensures that both the left and right sides are in the position between the hot pressing heads. Then, the drive motor can be started to drive the conveyor rollers to rotate, and the conveyor belt is used to transport them backward. The limit plate set during the transport can limit the movement and prevent the deviation from affecting the integrity of the hot pressing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a three-dimensional structural diagram of the hot-pressing assembly of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Processing table; 2. Limiting and transmitting assembly; 201. Limiting plate; 202. Drive motor; 203. Conveyor belt; 3. Screen; 4. Hot pressing assembly; 401. Connecting table; 402. Placement plate; 403. Hydraulic telescopic rod; 404. Connecting cable; 405. Connecting round seat; 406. Limiting seat; 407. Limiting slider; 408. Connecting seat; 409. Inner spring; 410. Hot pressing head; 411. Heating wire; 412. Placement rack; 413. Heat-conducting pressure plate; 414. Phase change material placement groove; 5. Bonding substrate; 6. Extension table. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 The present invention provides the following technical solution: A flexible OLED screen hot-press bonding device includes a processing table 1, an extension stage 6 on the back of the processing table 1, a limiting transmission component 2 on the top of the processing table 1, a hot-pressing component 4 on the back of the top of the processing table 1, a screen 3 on the top of the limiting transmission component 2, a bonding substrate 5 on the top of the screen 3, and the top of the extension stage 6 is flush with the top of the processing table 1.

[0022] The hot pressing assembly 4 includes a connecting platform 401, which is fixedly connected to the surface of the processing table 1 near the back. A placement plate 402 is fixedly connected to the front of the connecting platform 401. A hydraulic telescopic rod 403 is fixedly connected to the bottom of the placement plate 402. A connecting cable 404 is fixedly connected to the side of the hydraulic telescopic rod 403. A connecting round seat 405 is fixedly connected to the surface of the hydraulic telescopic rod 403. A limit seat 406 is fixedly connected to the bottom of the connecting round seat 405. The bottom of the hydraulic telescopic rod 403 is fixedly... A limiting slider 407 is fixedly connected to the bottom of the limiting slider 407. A connecting seat 408 is fixedly connected to the top of the connecting seat 408. An inner spring 409 is fixedly connected to the bottom of the inner spring 409. A hot press head 410 is fixedly connected to both sides of the bottom of the hot press head 410. A heating wire 411 is fixedly connected to the side of the heating wire 411. A heat-conducting pressure plate 413 is connected to the bottom of the heating wire 411. The heat-conducting pressure plate 413 is fixedly connected to the inner part of the hot press head 410. At the bottom end, a phase change material placement groove 414 is fixedly connected to the front of the hot press head 410. There are five hydraulic telescopic rods 403, which are evenly distributed at the bottom of the placement plate 402. The width of the limiting slider 407 is adapted to the inner diameter of the limiting seat 406. The length of the inner spring 409 is greater than the width of the connecting seat 408. A rectangular hollowed-out groove is opened inside the hot press head 410. The rectangular hollowed-out groove serves to place the internal placement frame 412, heating wire 411 and heat-conducting pressure plate 413 hot pressing mechanism. The limiting slider 407 is slidably connected to the inside of the limiting seat 406. The limiting slider 407 slides against the inside of the limiting seat 406 to avoid displacement and ensure that the hot pressing mechanism moves vertically, thus ensuring the quality of pressing. A bearing is fixedly connected to the right side of the inside of the processing table 1. The right side of the surface of the rotating rod is fixedly connected to the inner ring of the bearing. The bearing ensures that the rotating rod rotates smoothly and also prevents the rotating rod from being suspended and affecting the stability of rotation.

[0023] The limiting transmission assembly 2 includes a limiting plate 201, a drive motor 202, and a conveyor belt 203. The limiting plate 201 is fixedly connected to the top two sides of the processing table 1. The drive motor 202 is fixedly connected to the inside left side of the processing table 1 near the top. The output shaft of the drive motor 202 is fixedly connected to a rotating rod. A conveying roller is fixedly connected to the surface of the rotating rod. The conveyor belt 203 is drivenly connected to the surface of the conveying roller. A transmission roller is drivenly connected to the back side of the inside of the conveyor belt 203.

[0024] In use, the screen 3 and bonding substrate 5 to be pressed are placed on top of the conveyor belt 203, ensuring that both sides are positioned between the hot press heads 410. Then, the drive motor 202 is started to rotate the conveyor rollers, which are then transported backward by the conveyor belt 203. The limiting plate 201 is set during transport to limit the movement and prevent deviation from affecting the integrity of the hot pressing. When the screen 3 and bonding substrate 5 are moved to the position near the back end and below the hot press head 410 and the heat-conducting plate 413, the hydraulic pressure can be activated. The telescopic rod 403 drives the limiting slider 407 to move downwards against the bottom of the limiting seat 406. Multiple hydraulic telescopic rods 403 are driven simultaneously by the connecting cable 404, smoothly driving the connecting seat 408 downwards. This ensures the smoothness and uniformity of the downward drive and avoids uneven pressure. During pressing, the heating wire 411 on the inner wall can be activated first to conduct heat to the heat-conducting pressure plate 413. The hot pressing head 410 moves downwards continuously until the bottom of the heat-conducting pressure plate 413 contacts the top of the bonding substrate 5. At this point, the heat-conducting pressure plate 413 has... After uniform heating, hot pressing can be performed. When the hot pressing head 410 and the heat-conducting plate 413 are pressed down, the inner spring 409 is compressed first. In the initial pressing stage, the inner spring 409 provides a small buffering force, allowing the heat-conducting plate 413 to slowly contact the flexible OLED screen and the bonding substrate. As the pressing depth increases, the compression of the inner spring 409 increases, and the buffering force also gradually increases, playing a role in stabilizing the pressure and ensuring the pressing quality. A phase change material placement groove 414 is provided on the front side of the hot pressing head 410, where the phase change material is placed... The interior of the groove 414 is filled with paraffin phase change material. The phase change material undergoes a solid-liquid phase change within a specific temperature range. During the phase change process, it absorbs or releases a large amount of heat while maintaining a relatively stable temperature. When the heat-conducting plate 413 is heated, the phase change material absorbs heat and gradually melts, which buffers the temperature rise and prevents the temperature of the heat-conducting plate 413 from becoming too high. When heating stops, the phase change material gradually solidifies and releases heat, keeping the temperature of the heat-conducting plate 413 stable for a period of time, which is beneficial for the uniform bonding of the flexible OLED screen.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible OLED screen thermo-compression bonding device comprising a processing table (1), characterized in that: An extension stage (6) is provided on the back of the processing table (1), a limit transmission component (2) is provided on the top of the processing table (1), a hot pressing component (4) is provided on the back of the top of the processing table (1), a screen (3) is provided on the top of the limit transmission component (2), and a bonding substrate (5) is provided on the top of the screen (3). The hot pressing assembly (4) includes a connecting platform (401), which is fixedly connected to the surface of the processing table (1) near the back. A placement plate (402) is fixedly connected to the front of the connecting platform (401), and a hydraulic telescopic rod (403) is fixedly connected to the bottom of the placement plate (402). A connecting cable (404) is fixedly connected to the side of the hydraulic telescopic rod (403), and a connecting round seat (405) is fixedly connected to the surface of the hydraulic telescopic rod (403). A limit seat (406) is fixedly connected to the bottom of the connecting round seat (405), and a limit slider (407) is fixedly connected to the bottom of the hydraulic telescopic rod (403). A connecting seat (408) is fixedly connected to the bottom of the slider (407). An inner spring (409) is fixedly connected to the top of the connecting seat (408). A hot press head (410) is fixedly connected to the bottom of the inner spring (409). A placement rack (412) is fixedly connected to both sides of the bottom of the hot press head (410). A heating wire (411) is fixedly connected to the side of the placement rack (412). A heat-conducting pressure plate (413) is connected to the bottom of the heating wire (411). The heat-conducting pressure plate (413) is fixedly connected to the bottom of the hot press head (410). A phase change material placement groove (414) is fixedly connected to the front of the hot press head (410). 2.The flexible OLED screen heat pressing and adhering device according to claim 1, wherein: The limiting transmission component (2) includes a limiting plate (201), a drive motor (202) and a conveyor belt (203). The limiting plate (201) is fixedly connected to the top two sides of the processing table (1), and the drive motor (202) is fixedly connected to the inside left side of the processing table (1) near the top.

3. The flexible OLED screen thermo-compression bonding device according to claim 1, characterized in that: The top of the extension table (6) is flush with the top of the processing table (1).

4. The flexible OLED screen thermo-compression bonding device according to claim 1, characterized in that: The width of the limiting slider (407) is adapted to the inner diameter of the limiting seat (406), and the length of the inner spring (409) is greater than the width of the connecting seat (408).

5. The flexible OLED screen thermo-compression bonding device according to claim 1, characterized in that: The hot press head (410) has a rectangular hollowed-out groove inside.

6. The flexible OLED screen thermo-compression bonding device according to claim 2, characterized in that: The output shaft of the drive motor (202) is fixedly connected to a rotating rod, and a conveying roller is fixedly connected to the surface of the rotating rod.

7. The flexible OLED screen thermo-compression bonding device according to claim 6, characterized in that: The conveyor belt (203) is driven to the surface of the conveying roller, and the inner back of the conveyor belt (203) is driven to the transmission roller.

8. The flexible OLED screen thermo-compression bonding device according to claim 1, wherein: The limiting slider (407) is slidably connected to the inside of the limiting seat (406).

9. The flexible OLED screen thermo-compression bonding device according to claim 1, wherein: The processing table (1) has a bearing component fixedly connected to the inside right side, and the rotating rod is fixedly connected to the inner ring of the bearing component on the right side of its surface.

10. The flexible OLED screen thermo-compression bonding device according to claim 1, wherein: The number of hydraulic telescopic rods (403) is five, and the five hydraulic telescopic rods (403) are evenly distributed at the bottom of the placement plate (402).

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