Preparation method of encapsulation layer and inkjet printing platform

Abstract

The present application discloses a method for preparing an encapsulation layer and an inkjet printing platform, wherein the method for preparing the encapsulation layer comprises: placing encapsulation layer ink droplets on the surface to be encapsulated of a display component; driving the display component to vibrate through a transmission mechanism to diffuse the ink droplets on the encapsulation surface; and obtaining the encapsulation layer after drying. The method for preparing the encapsulation layer provided in the present application can improve the flatness of the encapsulation layer formed by inkjet printing, thereby improving the light extraction efficiency and encapsulation effect of the display device.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a method for preparing an encapsulation layer and an inkjet printing platform. Background Art

[0002] Organic Light Emitting Display (OLED) display devices have many advantages such as self-luminescence, low driving voltage, high luminous efficiency, short response time, and wide operating temperature range. They are recognized by the industry as the display device with the most development potential. The electrodes and organic layers of the OLED display panel are easily corroded by water and oxygen, resulting in a reduction in their lifespan, so it is necessary to encapsulate the OLED display panel. In the prior art, common encapsulation methods include FritSeal encapsulation, UV glue combined with getter encapsulation, face seal encapsulation, atomic layer deposition encapsulation (Atomic Layer Deposition, ALD) and thin film encapsulation (Thin Film Encapsulation, TFE) and other methods. Among them, the encapsulation layer is usually prepared by inkjet printing.

[0003] Inkjet printing can make the encapsulation layer denser, but the surface of the encapsulation layer is uneven after curing, which leads to scattering and diffuse reflection at the interface of the encapsulation layer after the OLED emits light, affecting the light output efficiency of the OLED. At the same time, the uneven surface of the encapsulation layer will also affect the encapsulation effect. The encapsulation effect is poor in thin areas, thus affecting the life of the OLED device. Summary of the invention

[0004] The present application provides a method for preparing an encapsulation layer and an inkjet printing platform to solve the technical problem of uneven surface of the encapsulation layer formed by inkjet printing in the prior art.

[0005] The present application provides a method for preparing an encapsulation layer, which comprises:

[0006] Placing encapsulation layer ink droplets on the surface of the display component to be encapsulated;

[0007] The display assembly is driven to vibrate by a transmission mechanism so that the ink droplets spread on the packaging surface;

[0008] After drying, the encapsulation layer is obtained.

[0009] Optionally, in some embodiments of the present application, the transmission mechanism drives the display assembly to vibrate for a time period of 0.5 min-4 min.

[0010] Optionally, in some embodiments of the present application, the step of driving the display assembly to vibrate by a transmission mechanism to diffuse the ink droplets on the packaging surface includes:

[0011] The concave parts between the adjacent ink droplets are solidified, and at the same time, the display component is driven to vibrate by the transmission mechanism, so that the ink droplets are diffused on the packaging surface.

[0012] Optionally, in some embodiments of the present application, the step of curing the concave portion between adjacent ink droplets includes:

[0013] The strip-shaped curing light is moved, and when the strip-shaped curing light corresponds to the concave portion between the adjacent ink droplets, the strip-shaped curing light is turned on, and when the curing light corresponds to the ink droplets, the strip-shaped curing light is turned off.

[0014] Optionally, in some embodiments of the present application, the energy of the strip curing lamp is 1500 mJ / cm 2 -2000mJ / cm 2 The opening time of the strip curing lamp is 1s-2s.

[0015] Optionally, in some embodiments of the present application, the step of curing the concave portion between adjacent ink droplets includes:

[0016] Fixing the curing lamp so that the light outlet of the curing lamp corresponds to the concave portion between adjacent ink droplets;

[0017] The curing light is repeatedly turned on and off until the transmission mechanism is turned off, so as to use the curing light to cure the concave portion between adjacent ink droplets, wherein the turning-on time of the curing light is 1s-2s, and the turning-off time of the curing light is 3s-5s.

[0018] The present application provides an inkjet printing platform, which comprises:

[0019] A base for supporting a display assembly; and

[0020] A vibration device is arranged on at least one side of the base and contacts the base, and is turned on after the ink droplets of the encapsulation layer of the display component are printed.

[0021] Optionally, in some embodiments of the present application, the base includes a first side surface and a second side surface that are arranged opposite to each other, and the first side surface and the second side surface are both provided with the vibration device.

[0022] Optionally, in some embodiments of the present application, the vibration device located on the first side and the vibration device located on the second side are symmetrically arranged.

[0023] Optionally, in some embodiments of the present application, the vibration device includes an ultrasonic control box and a transducer;

[0024] The ultrasonic control box is connected to a power supply voltage and amplifies the electric energy frequency of the power supply voltage. The transducer is connected to the ultrasonic control box, receives the power supply voltage after the electric energy frequency is amplified, and converts the power supply voltage into mechanical vibration.

[0025] Optionally, in some embodiments of the present application, the vibration device further includes an amplitude transformer, one end of the amplitude transformer is connected to the transducer, and the other end of the amplitude transformer is in contact with the base, and the amplitude transformer receives the mechanical vibration and is used to adjust the amplitude of the mechanical vibration.

[0026] Optionally, in some embodiments of the present application, the inkjet printing platform further includes a curing lamp, and the curing lamp is used to cure the concave portions between adjacent ink droplets.

[0027] Optionally, in some embodiments of the present application, the curing light is a strip-shaped light tube, and the curing light is movably disposed on a side of the base away from the display assembly.

[0028] Optionally, in some embodiments of the present application, the curing light is a light box, the curing light is arranged on a side of the base away from the display component, the curing light has a plurality of light emitting slits, and each of the light emitting slits is arranged corresponding to a recess between two adjacent columns of ink droplets.

[0029] Optionally, in some embodiments of the present application, the curing light includes a plurality of LED chips arranged in an array, the curing light is disposed on a side of the base away from the display component, and each of the LED chips is disposed corresponding to a recess between adjacent ink droplets.

[0030] Optionally, in some embodiments of the present application, the material of the base is transparent quartz.

[0031] The present application provides a method for preparing an encapsulation layer and an inkjet printing platform, wherein the method for preparing the encapsulation layer comprises: placing encapsulation layer ink droplets on the surface to be encapsulated of a display component; driving the display component to vibrate through a transmission mechanism to diffuse the ink droplets on the encapsulation surface; and obtaining the encapsulation layer after drying. The present application drives the display component to vibrate through a transmission mechanism to improve the liquid surface fluidity of the ink droplets, thereby improving the flatness of the encapsulation layer formed by inkjet printing, and improving the light extraction efficiency and encapsulation effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 is a first structural schematic diagram of the inkjet printing platform provided in the present application;

[0034] Figure 2 is a schematic diagram of the structure of the display assembly provided by the present application;

[0035] Figure 3 It is a schematic diagram of the working principle of the inkjet printing platform provided in this application;

[0036] Figure 4 is a second structural schematic diagram of the inkjet printing platform provided by the present application;

[0037] Figure 5 is a third structural schematic diagram of the inkjet printing platform provided in the present application;

[0038] Figure 6 is a fourth structural schematic diagram of the inkjet printing platform provided by the present application;

[0039] Figure 7 is a first structural schematic diagram of an inkjet printing platform and a display assembly provided by the present application;

[0040] Figure 8 yes Figure 7 A schematic top view of an inkjet printing platform and a display assembly is shown;

[0041] Fig. 9 is a second structural schematic diagram of the inkjet printing platform and display assembly provided by the present application;

[0042] Fig.10 It is a structural schematic diagram of a curing lamp;

[0043] Fig.11 It is another structural schematic diagram of a curing lamp;

[0044] Fig.12 This is a first flow chart of the method for preparing the encapsulation layer provided in this application.

[0045] Fig.13 is a second schematic flow chart of the method for preparing an encapsulation layer provided in the present application;

[0046] Fig.14 It is a schematic diagram of the process of preparing the encapsulation layer provided in this application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words used, such as "up", "down", "left", and "right", generally refer to the up, down, left, and right of the device in actual use or working state, specifically the direction of the drawing in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0048] The present application provides a method for preparing an encapsulation layer and an inkjet printing platform. The following are detailed descriptions. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0049] See also Figure 1-Figure 3 , Figure 1 is a first structural schematic diagram of the inkjet printing platform provided in this application, Figure 2 is a schematic diagram of the structure of the display assembly provided by this application, Figure 3 Schematic diagram of the working principle of the inkjet printing platform provided in the present application. In the present application, the inkjet printing platform 100 includes a base 10 and a vibration device 20. The base 10 is used to carry the display component 300. The vibration device 20 is arranged on at least one side of the base 10 and contacts the base 10. The vibration device 20 is turned on after the encapsulation layer ink droplets 330 of the display component 300 are printed to improve the flatness of the encapsulation layer 33 formed by the ink droplets 330.

[0050] The base 10 is formed of a hard material to facilitate carrying the printed matter, such as carrying the display assembly 300. The hard material forming the base 10 can be a transparent material or a non-transparent material, and this application does not make specific restrictions on this. For example, the hard material can be a transparent quartz material. In addition, the shape and size of the base 10 can be designed according to actual needs, and this application does not make specific restrictions on this.

[0051] Specifically, Figure 2As shown, in some embodiments of the present application, the display component 300 includes a hard substrate 31 and a display device 32. The display device 32 can be a flexible display device. The hard substrate 31 can be a glass substrate, but the present application is not limited thereto. For example, the hard substrate 31 can also be a hard resin substrate, etc. The hard substrate 31 has strong rigidity and serves as a carrier of the display device 32 to play a supporting role in the process of manufacturing the display device 32, so as to improve the manufacturing accuracy of the display device 32. After the display device 32 is manufactured, the hard substrate 31 can be peeled off by a process such as laser peeling.

[0052] In some embodiments, the display device 32 includes but is not limited to a flexible substrate, an array layer, a light-emitting layer, etc., which are sequentially stacked on the hard substrate 31. The specific film structure of the display device 32 is a technology well known to those skilled in the art and will not be described in detail here.

[0053] The material of the ink droplet 330 may be a polymer material. The polymer material may be a thermosetting plastic, a UV curing adhesive, etc. The polymer material may specifically be one of phenolic resin, urea-formaldehyde resin, melamine resin, unsaturated polyester resin, epoxy resin, silicone resin, polyurethane, polymethyl methacrylate, polyethyl methacrylate, and UV curing resin.

[0054] The vibration device 20 may be a device that can generate vibration, such as an ultrasonic vibrator, a high-frequency vibrator, an electromagnetic vibrator, etc. The vibration device 20 may be provided in multiple units. For example, the vibration device 20 may be provided in 1 unit, 2 units, 3 units or more units to provide a better vibration effect.

[0055] It can be understood that the vibration device 20 is used to vibrate the base 10 to accelerate the flow of the ink droplets 30. Specifically, Figure 3 As shown, after the ink droplets 330 are printed on the side of the display device 32 away from the hard substrate 31, since the ink droplets 330 are formed by inkjet printing, there is a certain gap between adjacent ink droplets 330, and the liquid surface of the ink droplets 330 themselves is uneven. When the ink droplets 330 flow automatically, the encapsulation layer 33 formed is uneven. The present application uses the vibration device 20 to vibrate the base 10 after printing the ink droplets 330 on the display device 32, which can promote the liquid surface fluidity of the ink droplets 330, thereby improving the flatness of the encapsulation layer 33.

[0056] It should be noted that the installation method of the vibration device 20 can be set according to the specific structure of the vibration device 20, as long as the vibration device 20 can transmit mechanical vibration to the base 10, and this application does not make any specific limitations on this.

[0057] The inkjet printing platform 100 provided in the present application includes a base 10 and a vibration device 20 in contact with the base 10. In the process of forming the encapsulation layer 33 of the display device 32 on the inkjet printing platform 100, after the ink droplets 330 are printed on the display device 32, the base 10 can be vibrated by the vibration device 20 to enhance the fluidity of the liquid surface of the ink droplets 330, so as to improve the flatness of the encapsulation layer 33 formed by the ink droplets 330, thereby improving the light extraction efficiency and encapsulation effect of the display device 32.

[0058] In some embodiments of the present application, when the size of the base 10 is small, the vibration device 20 can be set only on one side of the base 10 to achieve the effect of vibrating the base 10, thereby reducing production costs.

[0059] In some embodiments of the present application, when the size of the base 10 is large, vibration devices 20 can be set on the surrounding sides of the base 10 to improve the uniformity of vibration, meet the demand for uniform vibration of the base 10, and further improve the flatness of the packaging layer 33.

[0060] In some embodiments of the present application, the vibration devices 20 are arranged on opposite sides of the base 10, which improves the vibration uniformity of the base 10 and reduces the number of vibration devices 20. Figure 3 and Figure 4 , Figure 4 1 is a second structural schematic diagram of the inkjet printing platform 100 provided in the present application. The base 10 includes a first side surface 101 and a second side surface 102 which are arranged opposite to each other. The first side surface 101 and the second side surface 102 are both provided with a vibration device 20 .

[0061] Among them, the first side surface 101 and the second side surface 102 are each provided with 2 to 8 vibration devices 20. For example, the first side surface 101 and the second side surface 102 are each provided with 2 vibration devices 20, 3 vibration devices 20, 6 vibration devices 20, 8 vibration devices 20, etc. It should be noted that the first side surface 101 and the second side surface 102 shown in the figure are the left and right sides of the base 10, but they should not be understood as limitations on the present application. For example, in other embodiments, the first side surface 101 and the second side surface 102 can be the front and rear sides of the base 10.

[0062] It is understood that the printing direction of inkjet printing is generally the direction extending from the first side surface 101 to the second side surface 102, or the direction extending from the second side surface 102 to the first side surface 101. The concave and convex surfaces of the ink droplets 330 formed thereby are consistent with the printing direction. Therefore, by respectively arranging the vibration device 20 on the first side surface 101 and the second side surface 102, a vibration direction parallel to the inkjet printing direction can be formed, so that the lateral flow of the liquid surface of the ink droplets 330 is increased, and the flatness of the encapsulation layer 33 formed by the ink droplets 330 is further improved.

[0063] In addition, in this embodiment, vibration devices 20 are respectively disposed on opposite sides of the base 10, and the number of vibration devices 20 disposed on the first side 101 and the second side 102 is the same, which can improve the uniformity of vibration and further improve the flatness of the encapsulation layer 33 formed by the ink droplets 330. Of course, in other embodiments, the number of vibration devices 20 disposed on the first side 101 and the second side 102 may also be different.

[0064] Further, in some embodiments of the present application, the vibration device 20 located on the first side 101 and the vibration device 20 located on the second side 102 are symmetrically arranged. It can be understood that the base 10 has a central axis. The central axis is parallel to the first side 101 or the second side 102. The vibration device 20 is symmetrically arranged relative to the central axis. This design makes the lateral vibration generated by the vibration device 20 more uniform, so as to improve the flow uniformity of the ink droplet 330.

[0065] In some embodiments of the present application, the vibration device 20 is an ultrasonic vibrator. The vibration frequency generated by the ultrasonic vibrator is higher, but the vibration amplitude is not too large, and will not cause vibration damage to the base 10.

[0066] For details, please refer to Figure 5 , Figure 5 : is a third structural schematic diagram of the inkjet printing platform provided by the present application. The vibration device 20 includes an ultrasonic control box 21 and a transducer 22. The ultrasonic control box 21 is connected to a power supply voltage V and amplifies the power frequency of the power supply voltage V. The transducer 22 is connected to the ultrasonic control box 21. The transducer 22 receives the power supply voltage V after the power frequency is amplified, and converts the high-frequency power supply voltage V into mechanical vibration, thereby generating ultrasonic waves. Then, the transducer 22 transmits the mechanical vibration to the base 10.

[0067] In one embodiment, the voltage value of the power supply voltage V is 220V. The power frequency of the power supply voltage V is 60Hz. The ultrasonic control box 21 amplifies the power frequency of the power supply voltage V. The amplified power frequency is 20Hz, 35Hz or 40Hz. The transducer 22 is provided with a material having a piezoelectric effect such as piezoelectric ceramics, which can convert the high-frequency power supply voltage V into high-frequency mechanical vibration.

[0068] For further information, see Figure 6 , Figure 6 is a fourth structural schematic diagram of the inkjet printing platform provided in this application. Figure 5The difference of the inkjet printing platform 100 shown is that, in the present embodiment, the vibration device 20 further includes an amplitude transformer 23. One end of the amplitude transformer 23 is connected to the transducer 22. The other end of the amplitude transformer 23 is in contact with the base 10. The amplitude transformer 23 receives the mechanical vibration generated by the transducer 22 and is used to adjust the amplitude of the mechanical vibration. It is understandable that after the transducer 22 converts the high-frequency power supply voltage V into mechanical vibration, the amplitude of the mechanical vibration may not meet the vibration amplitude required by the base 10. Therefore, by adding the amplitude transformer 23 to the vibration device 20, the amplitude of the mechanical vibration generated by the transducer 22 can be adjusted to obtain a suitable mechanical vibration.

[0069] See also Figure 7 , Figure 7 is a first structural schematic diagram of an inkjet printing platform and a display assembly provided by the present application. Figure 4 The difference of the inkjet printing platform 100 shown is that, in this embodiment, the inkjet printing platform 100 further includes a curing lamp 30. The curing lamp 30 is used to cure the concave portion 33A between adjacent ink droplets 330.

[0070] It is understandable that, since the ink droplets 330 are formed by inkjet printing, there is a certain gap between adjacent ink droplets 330, and the liquid surface of the ink droplets 330 itself is uneven. Therefore, the surface of the encapsulation layer 33 formed by the ink droplets 330 is uneven, forming concave portions 33A and convex portions 33B. In this embodiment, the concave portions 33A between adjacent ink droplets 330 are cured by the curing lamp 30 to reduce the fluidity of the ink in the concave portions 33A, so that the ink in the convex portion 33B flows to the concave portions 33A, thereby accelerating the speed of achieving the liquid surface flattening effect.

[0071] In some embodiments, the curing lamp 30 can be disposed above the inkjet printing platform 100. That is, the curing lamp 30 can cure the concave portion 33A between adjacent ink droplets 330 from the side of the display assembly 300 away from the base 10. This arrangement can improve the curing efficiency and extend the service life of the curing lamp 30.

[0072] In some embodiments, the curing lamp 30 can be disposed at the bottom of the inkjet printing platform 100. That is, the curing lamp 30 can cure the concave portion 33A between adjacent ink droplets 330 from the side of the base 10 away from the display assembly 300. This arrangement can avoid the problem that when the power of the curing lamp 30 is too large, the surface of the ink droplet 330 is quickly cured, resulting in poor fluidity of the ink droplet 330.

[0073] Furthermore, when the curing lamp 30 is disposed at the bottom of the inkjet printing platform 100, the base 10 is made of a transparent material. For example, the base 10 is made of quartz material. Quartz is a light-transmitting mirror material. In the present application, the light transmittance of the base 10 made of quartz is greater than 99%, and the surface roughness is less than ±20 μm, thereby improving the utilization rate of the curing lamp 30 and the curing efficiency.

[0074] In the present application, when the material of the ink droplet 330 is a thermosetting material, the curing lamp 30 may be a thermosetting box or a thermosetting lamp with a heating filament. When the material of the ink droplet 330 is a UV curing material, the curing lamp 30 may be an ultraviolet lamp tube, an ultraviolet lamp box or an ultraviolet LED chip.

[0075] In the present application, the curing lamp 30 may be a strip-shaped lamp tube, a light box, or an array-arranged LED chip, and may be specifically arranged according to the actual structural requirements of the inkjet printing platform 100. When the curing lamp 30 is a strip-shaped lamp tube, the curing lamp 30 may be movably arranged on a side of the base 10 away from the display assembly 300. When the curing lamp 30 is a light box or an array-arranged LED chip, the curing lamp 30 may be fixedly arranged on a side of the base 10 away from the display assembly 300.

[0076] Specifically, in one embodiment of the present application, the material of the ink droplet 330 is a UV curing glue doped with a desiccant. The desiccant material is selected from at least one of alkaline earth metals, alkaline earth metal oxides, zeolites, metal alcoholates with long-chain hydrocarbons, sulfates, halides, and perchlorates. The size and volume percentage content of the desiccant can be adjusted to meet the light transmittance requirements of the display device 32. The curing lamp 30 is a UV curing lamp. The following embodiments of the present application are described by taking the curing lamp 30 as a UV curing lamp as an example, but it cannot be understood as a limitation of the present application.

[0077] For further information, see Figure 8 , Figure 8 yes Figure 7 The top view of the inkjet printing platform and the display assembly is shown. When the curing lamp 30 is a UV strip lamp, the curing lamp 30 is movably disposed on a side of the base 10 away from the display assembly 300 .

[0078] The curing lamp 30 can be movably arranged on a side of the base 10 away from the display assembly 300 by means of components well known to those skilled in the art, such as a driving element, a slide rail, and an elastic component, which will not be described in detail in this application. In addition, the curing lamp 30 can be directly arranged on the bottom surface of the base 10, or can be non-contactly arranged on a side of the base 10 away from the display assembly 300.

[0079] The corresponding program can be set by the external device to control the movement of the curing lamp 30. Figure 7As shown, when the curing light 30 moves to the position corresponding to the concave portion 33A, the curing light 30 is turned on. When the curing light 30 moves to the position corresponding to the convex portion 33B, the curing light 30 is turned off. In this way, the curing light 30 quickly scans the ink droplets 330 on the display device 32 in sequence.

[0080] It is understandable that the ink droplets 330 are sprayed onto the display device 32 in rows, with a certain gap between adjacent ink droplets 330. Therefore, the size of the curing lamp 30 is adapted to the gap between the ink droplets 330 formed by inkjet printing, so as to achieve the effect of curing the concave portion 33A between adjacent ink droplets 330.

[0081] In some embodiments of this application, please refer to Fig. 9 and Fig.10 , Fig. 9 is a second structural schematic diagram of the inkjet printing platform and display assembly provided in the present application, Fig.10 30 is a schematic diagram of the structure of the curing lamp provided by the present application. In this embodiment, the curing lamp 30 is a UV lamp box. The curing lamp 30 is arranged on a side of the base 10 away from the display component 300. The curing lamp 30 has a plurality of light emitting slits 301 (only one is shown in the figure), and each light emitting slit 301 is arranged corresponding to the concave portion 33A between two adjacent columns of ink droplets 330.

[0082] The curing lamp 30 includes a light emitting slit 301, a UV lamp 302, a condenser 303 and a lampshade 304. The UV lamp 302 is disposed in the lampshade 304. The condenser 303 is disposed between the UV lamp 302 and the lampshade 304 to focus the light emitted by the UV lamp 302 to the light emitting slit 301, thereby improving the light utilization rate.

[0083] This embodiment uses an ultraviolet light box as the curing lamp 30, and the curing lamp 30 can be directly fixed on the side of the base 10 away from the display assembly 300 to improve the working stability of the curing lamp 30, while omitting the scanning process and saving power consumption.

[0084] In some embodiments of this application, please refer to Fig. 9 and Fig.11 , Fig.11 3 is another structural schematic diagram of the curing lamp provided by the present application. The curing lamp 30 includes a plurality of LED chips 310 arranged in an array. The curing lamp 30 is disposed on a side of the base 10 away from the display assembly 300. Each LED chip 310 is disposed corresponding to a concave portion 33A between adjacent ink droplets 330.

[0085] The LED chip 310 may be an ultraviolet LED chip to emit ultraviolet light to cure the ink droplets 330. The LED chip 310 is a technology well known to those skilled in the art and will not be described in detail herein.

[0086] Similarly, this embodiment uses LED chips 310 arranged in an array as the curing lamp 30, and the curing lamp 30 can be directly fixed on the side of the base 10 away from the display component 300 to improve the working stability of the curing lamp 30, while eliminating the scanning process and saving power consumption.

[0087] See also Fig.12 , Fig.12 1 is a schematic diagram of the first process of the method for preparing the encapsulation layer provided in the present application. Specifically, the method for preparing the encapsulation layer provided in the present application comprises the following steps:

[0088] 101. Place encapsulation layer ink droplets on the surface of the display component to be encapsulated.

[0089] Specifically, ink droplets of the encapsulation layer may be placed on the surface of the display component to be encapsulated by inkjet printing technology. For example, an inkjet printing platform may be provided, the display component may be placed on the base of the inkjet printing platform by a transfer device such as a robotic arm, and then inkjet printing may be performed on the surface of the display component to be encapsulated to form ink droplets of the encapsulation layer.

[0090] Of course, the encapsulation layer ink droplets may also be placed on the surface to be encapsulated of the display component by other ink droplet printing devices or ink droplet printing methods, and this application does not make any specific limitation on this.

[0091] The material of the ink droplets may be a polymer material. The polymer material may be a thermosetting plastic, a UV curing adhesive, etc. The polymer material may specifically be one of phenolic resin, urea-formaldehyde resin, melamine resin, unsaturated polyester resin, epoxy resin, silicone resin, polyurethane, polymethyl methacrylate, polyethyl methacrylate, and UV curing resin.

[0092] The display assembly includes a hard substrate and a display device. The display device may be a flexible display device. The hard substrate may be a glass substrate, but the present application is not limited thereto. For example, the hard substrate may also be a hard resin substrate, etc. The encapsulation layer is used to encapsulate and protect the display device.

[0093] 102. Drive the display component to vibrate through a transmission mechanism to make the ink droplets diffuse on the packaging surface.

[0094] Specifically, the transmission mechanism is turned on, and the transmission mechanism transmits the vibration to the display component, causing the display component to vibrate, thereby causing the ink droplets to spread on the packaging surface, thereby achieving the effect of leveling the ink droplet liquid surface.

[0095] The transmission mechanism may be a device that can generate vibrations, such as an ultrasonic vibrator, a high-frequency vibrator, or an electromagnetic vibrator. The transmission mechanism may be in direct contact with the display component to vibrate the display component. The transmission mechanism may also transmit the vibrations to the display component through an intermediate medium such as a base, which is not specifically limited in this application.

[0096] The transmission mechanism drives the display component to vibrate for a time period of 0.5 min to 4 min, which can be specifically set according to the thickness of the encapsulation layer and the viscosity of the ink droplets. For example, the transmission mechanism drives the display component to vibrate for a time period of 0.5 min, 1 min, 2 min, 3 min, 4 min, etc.

[0097] Specifically, when the encapsulation layer is too thick or the viscosity of the ink droplets is high, the liquid surface flow speed of the ink droplets is slow. Therefore, a longer vibration time is required to ensure that the ink droplets flow fully and quickly achieve the effect of leveling the liquid surface. When the encapsulation layer is thin or the viscosity of the ink droplets is low, a shorter vibration time can meet the flow requirements of the ink droplets. This application sets the vibration time to 0.5min-4min, which can basically meet the requirements and achieve the effect of leveling the encapsulation layer.

[0098] 103. After drying, the encapsulation layer is obtained.

[0099] Specifically, after the ink droplets are spread and flattened, a curing device such as a curing lamp may be used to dry the ink droplets, and a packaging layer may be obtained after the ink droplets are cured.

[0100] When the material of the ink droplet is a thermosetting material, the curing lamp may be a thermosetting box or a thermosetting lamp. When the material of the ink droplet is a UV curing material, the curing lamp may be a UV curing lamp, such as an ultraviolet lamp tube, an ultraviolet lamp box, and the like.

[0101] In one embodiment of the present application, the material of the ink droplets is a UV curing glue mixed with a desiccant. The desiccant material is selected from at least one of alkaline earth metals, alkaline earth metal oxides, zeolites, metal alcoholates with long-chain hydrocarbons, sulfates, halides, and perchlorates. The size and volume percentage content of the desiccant can be adjusted to meet the light transmittance requirements of the display component. The curing lamp is a UV curing lamp.

[0102] The present application provides a method for preparing an encapsulation layer. During the preparation of the encapsulation layer, a transmission mechanism is used to drive a display component to vibrate so that ink droplets diffuse on the encapsulation surface. This can improve the liquid surface fluidity of the ink droplets, thereby improving the flatness of the encapsulation layer formed by inkjet printing, and improving the light extraction efficiency and encapsulation effect of the display device.

[0103] Furthermore, in some embodiments of the present application, the step of driving the display component to vibrate through a transmission mechanism to diffuse the ink droplets on the packaging surface includes: solidifying the recesses between adjacent ink droplets, and simultaneously driving the display component to vibrate through a transmission mechanism to diffuse the ink droplets on the packaging surface.

[0104] It is understandable that in the process of the transmission mechanism driving the display component to vibrate, a curing device such as a curing lamp can be used to cure the concave parts between adjacent ink droplets to reduce the ink fluidity in the concave parts and make the ink in the convex parts flow to the concave parts, thereby quickly achieving the effect of leveling the liquid surface.

[0105] In the present application, when the material of the ink droplet is a thermosetting material, the curing lamp can be a thermosetting box or a thermosetting lamp. When the material of the ink droplet is a UV curing material, the curing lamp can be a UV curing lamp, such as an ultraviolet lamp tube, an ultraviolet lamp box, etc.

[0106] In some embodiments of the present application, when the curing light is a strip curing light, the step of curing the concave portions between adjacent ink droplets includes: moving the strip curing light, turning on the strip curing light when the strip curing light corresponds to the concave portions between adjacent ink droplets, and turning off the strip curing light when the strip curing light corresponds to the ink droplets.

[0107] Among them, the energy of the strip curing lamp is 1500mJ / cm 2 -2000mJ / cm 2 For example, the energy of a strip curing lamp can be 1500mJ / cm 2 、1600mJ / cm 2 、1800mJ / cm 2 、1800mJ / cm 2 、2000mJ / cm 2 It is understandable that if the energy of the strip curing lamp is too low, the curing effect on the concave part between adjacent ink droplets is poor and the curing time is long. If the energy of the strip curing lamp is too high, it is easy to damage other film layers of the display component or cause the convex part adjacent to the concave part to cure, which is not conducive to the flow of ink. The energy of the strip curing lamp is set to 1500mJ / cm 2 -2000mJ / cm 2 , while achieving solidification of the concave parts, adverse effects on the convex parts or other film layers can be avoided.

[0108] Specifically, a corresponding program can be set through an external device according to the spacing between adjacent ink droplets to control the movement of the strip curing light, thereby turning on the scanning mode of the strip curing light. When the strip curing light moves and scans the concave parts between adjacent ink droplets, the strip curing light is turned on, and the turning-on time of the strip curing light is 1s-2s. The turning-on time of the strip curing light in this embodiment is set to 1s-2s mainly based on the length of the concave parts between adjacent ink droplets and the moving speed of the strip curing light. During the 1s-2s time when the strip curing light is turned on, the strip curing light irradiates the concave parts between adjacent ink droplets, and while curing the concave parts, avoids irradiating the convex parts, thereby increasing the speed of flattening the encapsulation layer.

[0109] In some embodiments of the present application, when the curing lamp has a plurality of light emitting slits or the curing lamp includes a plurality of LED chips arranged in an array, the step of curing the recesses between adjacent ink droplets includes: fixing the curing lamp so that the light outlet of the curing lamp corresponds to the recesses between adjacent ink droplets; repeatedly turning the curing light on and off until the transmission mechanism is closed, so as to use the curing light to cure the recesses between adjacent ink droplets, wherein the turning-on time of the curing lamp is 1s-2s, and the turning-off time of the curing lamp is 3s-5s.

[0110] First, the curing lamp is turned on to cure the concave parts between adjacent ink droplets, and the turning-on time is 1s-2s.

[0111] Specifically, when the transmission mechanism is turned on to vibrate the display component, the curing lamp is turned on to cure the concave parts between adjacent ink droplets 3 to reduce the ink fluidity in the concave parts and make the ink in the convex parts flow to the concave parts, thereby quickly achieving the effect of leveling the liquid surface.

[0112] In addition, the on time of the curing lamp is set to 1s-2s mainly to take into account the fluidity of the ink. If the on time is too long, it is not conducive to the flow of the ink. If the on time is too short, the concave part cannot be cured, thereby reducing the ink fluidity effect of the concave part.

[0113] Then, turn off the curing light for 3s-5s.

[0114] Specifically, after the curing light is turned on for 1s-2s, it is turned off for 3s-5s. During the time when the curing light is turned off, the transmission mechanism is still in the on state. At this time, after the concave parts between adjacent ink droplets are cured for 1s-2s, the surface is solidified and the fluidity becomes poor, while the convex parts are enhanced in fluidity under the action of vibration and flow toward the concave parts, thereby quickly achieving the effect of flattening the liquid surface.

[0115] Finally, while the transmission mechanism vibrates the display assembly, the above-mentioned action of turning on and off the curing light is repeated.

[0116] From the above embodiment, it can be known that the transmission mechanism vibrates the display assembly for 0.5min-4min. During this period, the above-mentioned turning on and off of the curing lamp can be repeated to continuously cure the concave portion and the ink flowing to the concave portion, thereby increasing the speed of flattening the encapsulation layer.

[0117] Accordingly, the inkjet printing platform provided in the above embodiments of the present application can be used to form a packaging layer on the surface to be packaged of the display component. Fig.13 and Fig.14 , Fig.13 is a second schematic flow chart of the method for preparing the encapsulation layer provided in the present application, Fig.14 Schematic diagram of the process of preparing the encapsulation layer provided in the present application. The method of preparing the encapsulation layer provided in the present application comprises the following steps:

[0118] 201. Place the display component on the base.

[0119] Specifically, the display component 300 can be placed on the base 10 of the inkjet printing platform 100. The inkjet printing platform 100 is the inkjet printing platform 100 described in any of the above embodiments, which will not be described in detail here. In addition, the inkjet printing platform 100 and the display component 300 in the accompanying drawings are only used to illustrate the method of inkjet printing encapsulation layer of the present application, and cannot be understood as limiting the present application.

[0120] Specifically, the display assembly 300 can be transferred to the base 10 by a transfer device such as a robotic arm. The display assembly 300 includes a hard substrate 31 and a display device 32. The hard substrate 31 contacts the base 10 on the side away from the display device 32. The display device 32 can be a flexible display device. The hard substrate 31 can be a glass substrate, but the present application is not limited thereto. For example, the hard substrate 31 can also be a hard resin substrate, etc. The hard substrate 31 has a strong rigidity and serves as a carrier of the display device 32. It is used to play a supporting role in the process of manufacturing the display device 32 to improve the manufacturing accuracy of the display device 32.

[0121] In some embodiments, the display device 32 includes but is not limited to a flexible substrate, an array layer, a light-emitting layer, etc., which are sequentially stacked on the hard substrate 31. The specific film structure of the display device 32 is a technology well known to those skilled in the art and will not be described in detail here.

[0122] 202. Print encapsulation layer ink droplets on the surface to be encapsulated of the display component.

[0123] Specifically, the surface to be packaged is a surface of the display device 32 away from the base 10. The ink droplets 330 are sprayed onto the display device 32 in rows. The packaging layer 33 obtained after the ink droplets 330 flow covers the display device 32 to package the display device 32.

[0124] Since there is a certain gap between adjacent ink droplets 330 and the liquid surface of the ink droplets 330 itself is uneven, the surface of the encapsulation layer 33 obtained after the ink droplets 330 flow is uneven, forming a concave portion 33A and a convex portion 33B.

[0125] The material of the ink droplet 330 may be a polymer material. The polymer material may be one of thermosetting plastics, UV curing glue, etc. The polymer material may specifically be one of phenolic resin, urea-formaldehyde resin, melamine resin, unsaturated polyester resin, epoxy resin, silicone resin, polyurethane, polymethyl methacrylate, polyethyl methacrylate, and UV curing resin.

[0126] 203. Turn on the vibration device to vibrate the base, and the ink droplets diffuse under the vibration of the base.

[0127] Specifically, after the ink droplets 330 are printed on the display component 300, the vibration device 20 is turned on, and the ink droplets 330 are diffused under the vibration of the base 10, so that the liquid surface fluidity of the entire encapsulation layer 33 is enhanced, and the liquid surface is flattened as soon as possible to improve the flatness of the encapsulation layer 33. The activation time of the vibration device 20 is 0.5min-4min, which can be specifically set according to the thickness of the encapsulation layer 33 and the viscosity of the ink droplets 330. For example, the activation time of the vibration device 20 can be 0.5min, 1min, 2min, 3min, 4min, etc.

[0128] Specifically, when the encapsulation layer 33 is too thick or the viscosity of the ink droplet 330 is relatively high, the liquid surface flow speed of the ink droplet 330 is relatively slow. Therefore, the vibration device 20 needs to be turned on for a relatively long time to ensure that the ink droplet 330 flows fully and quickly achieves the effect of leveling the liquid surface. When the encapsulation layer 33 is relatively thin or the viscosity of the ink droplet 330 is relatively low, the vibration device 20 can be turned on for a relatively short time to meet the flow requirements of the ink droplet 330. The present application sets the on time of the vibration device 20 to 0.5min-4min, which can basically meet the requirements and achieve the effect of leveling the encapsulation layer 33.

[0129] It should be noted that in order to improve the packaging effect of the display device 32, the display device 32 often adopts an inorganic / organic / inorganic overlapping packaging structure. Among them, the inorganic packaging layer serves as a water and oxygen barrier layer to block water and isolate oxygen. The organic packaging layer serves as a buffer layer to slowly release the stress generated by the inorganic packaging layer and enhance the flexibility of the display device 32. The inorganic packaging layer can be formed by deposition and other processes, which will not be repeated here. Among them, the organic packaging layer is formed by the preparation method of the packaging layer provided in this application.

[0130] In addition, in the present application, the encapsulation structure may be a single-layer or multi-layer organic encapsulation layer structure. The encapsulation structure may also be an inorganic / organic / inorganic structure, which may be specifically designed according to the actual encapsulation requirements of the display device 32 .

[0131] Further, in some embodiments of the present application, when the encapsulation layer 33 is prepared using the inkjet printing platform 100 including the curing lamp 30, the step of turning on the curing lamp 30 and using the curing lamp 30 to cure the concave portion 33A between adjacent ink droplets 330 includes: turning on the curing lamp 30 and using the curing lamp 30 to cure the concave portion 33A between adjacent ink droplets 330. At the same time, turning on the vibration device 20 to vibrate the base 10, and the ink droplets 330 diffuse under the vibration of the base 10.

[0132] It can be understood that, when the vibration device 20 is turned on to vibrate the base 10, the curing lamp 13 can be used to cure the concave portion 33A between adjacent ink droplets 330 to reduce the fluidity of the ink in the concave portion 33A, so that the ink in the convex portion 33B flows to the concave portion 33A, thereby quickly achieving the effect of leveling the liquid surface.

[0133] In the present application, when the material of the ink droplet 330 is a thermosetting material, the curing lamp 30 may be a thermosetting box or a thermosetting lamp. When the material of the ink droplet 330 is a UV curing material, the curing lamp 30 may be an ultraviolet lamp tube or an ultraviolet lamp box.

[0134] In the present application, the curing lamp 30 may be a strip-shaped lamp tube, a light box, or an array-arranged LED chip, and may be specifically arranged according to the actual structural requirements of the inkjet printing platform 100. When the curing lamp 30 is a strip-shaped lamp tube, the curing lamp 30 is movably arranged on a side of the base 10 away from the display assembly 300. When the curing lamp 30 is a light box or an array-arranged LED chip, the curing lamp 30 is fixedly arranged on a side of the base 10 away from the display assembly 300.

[0135] Specifically, in one embodiment of the present application, the material of the ink droplet 330 is a UV curing glue mixed with a desiccant. The desiccant material is selected from at least one of alkaline earth metals, alkaline earth metal oxides, zeolites, metal alcoholates with long-chain hydrocarbons, sulfates, halides, and perchlorates. The size and volume percentage content of the desiccant can be adjusted to meet the light transmittance requirements of the display device 32. The curing lamp 30 is a UV curing lamp. The following embodiments of the present application are described by taking the curing lamp 30 as a UV curing lamp as an example, but it cannot be understood as a limitation of the present application.

[0136] In some embodiments of this application, please also refer to Figure 7 and Figure 8When the curing lamp 30 is a strip-shaped ultraviolet lamp tube, the curing lamp 30 is turned on, and the step of using the curing lamp 30 to cure the concave portion 33A between adjacent ink droplets 330 includes: moving the curing lamp 30, when the curing lamp 30 corresponds to the concave portion 33A between adjacent ink droplets 330, turning on the curing lamp 30, and when the curing lamp 30 corresponds to the ink droplet 330, turning off the curing lamp 30.

[0137] The energy of the curing lamp 30 is 1500 mJ / cm 2 -2000mJ / cm 2 For example, the energy of the curing lamp 30 may be 1500 mJ / cm 2 、1600mJ / cm 2 、1800mJ / cm 2 、1800mJ / cm 2 、2000mJ / cm 2 It is understandable that if the energy of the curing lamp 30 is too low, the curing effect on the concave portion 33A between adjacent ink droplets 330 is poor, and the curing time is long. If the energy of the curing lamp 30 is too high, it is easy to damage other film layers of the display component 300, or cause the convex portion 33B adjacent to the concave portion 33A to cure, which is not conducive to the flow of ink. The energy of the curing lamp 30 is set to 1500mJ / cm 2 -2000mJ / cm 2 , while achieving solidification of the concave portion 33A, adverse effects on the convex portion 33B or other film layers can be avoided.

[0138] Specifically, a corresponding program can be set through an external device according to the spacing between adjacent ink droplets 330 to control the movement of the curing light 30, thereby turning on the scanning mode of the curing light 30. When the curing light 30 moves and scans the concave portion 33A between adjacent ink droplets 330, the curing light 30 is turned on, and the turning-on time of the curing light 30 is 1s-2s. In this embodiment, the turning-on time of the curing light 30 is set to 1s-2s mainly based on the length of the concave portion 33A between adjacent ink droplets 330 and the moving speed of the curing light 30. During the 1s-2s time when the curing light 30 is turned on, the curing light 30 irradiates the concave portion 33A between adjacent ink droplets 330, and while curing the concave portion 33A, avoids irradiating the convex portion 33B, thereby increasing the speed of planarization of the encapsulation layer 33.

[0139] In some embodiments of this application, please also refer to Fig. 9 and Fig.10When the curing lamp 30 is a UV light box or the curing lamp 30 includes a plurality of LED chips 310 arranged in an array, the step of turning on the curing lamp 30 and using the curing lamp 30 to cure the concave portions 33A between adjacent ink droplets 330 includes: repeatedly turning on and off the curing lamp 30 to use the curing lamp 30 to cure the concave portions 33A between adjacent ink droplets 330, wherein the turning-on time of the curing lamp 30 is 1s-2s, and the turning-off time of the curing lamp 30 is 3s-5s.

[0140] First, the curing lamp 30 is turned on to cure the concave portion 33A between adjacent ink droplets 330 , and the turning-on time is 1 s-2 s.

[0141] Specifically, when the vibration device 20 is turned on to vibrate the base 10, the curing lamp 13 is turned on to cure the concave portion 33A between adjacent ink droplets 330 to reduce the fluidity of the ink in the concave portion 33A, so that the ink in the convex portion 33B flows to the concave portion 33A, thereby quickly achieving the effect of leveling the liquid surface.

[0142] In addition, the on time of the curing lamp 30 is set to 1s-2s mainly in consideration of the fluidity of the ink. A too long on time is not conducive to the flow of the ink, and a too short on time cannot cure the concave portion 33A, thereby reducing the ink fluidity effect of the concave portion 33A.

[0143] Then, the curing lamp 30 is turned off for 3s-5s.

[0144] Specifically, after the curing lamp 30 is turned on for 1s-2s, the curing lamp 30 is turned off for 3s-5s. During the time when the curing lamp 30 is turned off, the vibration device 20 is still in the on state. At this time, after the concave portion 33A between adjacent ink droplets 330 is cured for 1s-2s, the surface is cured and the fluidity becomes poor, while the convex portion 33B is vibrated by the vibration device 20, and the fluidity is enhanced and flows toward the concave portion 33A, thereby quickly achieving the effect of leveling the liquid surface.

[0145] Finally, while the vibration device 20 is turned on, the above-mentioned operation of turning on and off the curing lamp 30 is repeated.

[0146] From the above embodiment, it can be known that the activation time of the vibration device 20 is 0.5min-4min. During this period of time, the above-mentioned activation and deactivation of the curing lamp 30 can be repeated to continuously cure the concave portion 33A and the ink flowing to the concave portion 33A, thereby increasing the speed of planarization of the encapsulation layer 33.

[0147] In the method for preparing the encapsulation layer provided in the present application, when forming the encapsulation layer 33 of the display device 32 on the inkjet printing platform 100, after printing the ink droplets 330 on the display device 32, the base 10 can be vibrated by the vibration device 20, so that the liquid surface fluidity of the ink droplets 330 is enhanced, and the flatness of the encapsulation layer 33 formed by the ink droplets 330 is improved. Further, in the process of turning on the vibration device 20 to vibrate the base 10, the concave portion 33A between adjacent ink droplets 330 can be cured by using the curing lamp 13 to reduce the liquid surface fluidity of the concave portion 33A, so that the convex portion 33B flows to the concave portion 33A, thereby quickly achieving the effect of flattening the liquid surface, and further improving the light extraction efficiency and encapsulation effect of the display device 200.

[0148] The above is a detailed introduction to the preparation method of the encapsulation layer and the inkjet printing platform provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for preparing an encapsulation layer, characterized in that: include: Placing encapsulation layer ink droplets on the surface of the display component to be encapsulated; The display assembly is driven to vibrate by a transmission mechanism so that the ink droplets spread on the packaging surface; After drying, the encapsulation layer is obtained; Among them, the step of driving the display component to vibrate through the transmission mechanism to make the ink droplets diffuse on the packaging surface includes: solidifying the concave parts between adjacent ink droplets so that the ink in the convex parts flows to the concave parts, and at the same time driving the display component to vibrate through the transmission mechanism to make the ink droplets diffuse on the packaging surface.

2. The method for preparing the encapsulation layer according to claim 1, characterized in that: The transmission mechanism drives the display assembly to vibrate for a time period of 0.5 min to 4 min.

3. The method for preparing the encapsulation layer according to claim 1, characterized in that: The step of curing the concave portion between adjacent ink droplets comprises: The strip-shaped curing light is moved, and when the strip-shaped curing light corresponds to the concave portion between the adjacent ink droplets, the strip-shaped curing light is turned on, and when the strip-shaped curing light corresponds to the ink droplets, the strip-shaped curing light is turned off.

4. The method for preparing the encapsulation layer according to claim 3, characterized in that: The energy of the strip curing lamp is 1500mJ / cm 2 -2000mJ / cm 2 The opening time of the strip curing lamp is 1s-2s.

5. The method for preparing the encapsulation layer according to claim 1, characterized in that: The step of curing the concave portion between adjacent ink droplets comprises: Fixing the curing lamp so that the light outlet of the curing lamp corresponds to the concave portion between adjacent ink droplets; The curing light is repeatedly turned on and off until the transmission mechanism is turned off, so as to use the curing light to cure the concave portion between adjacent ink droplets, wherein the turning-on time of the curing light is 1s-2s, and the turning-off time of the curing light is 3s-5s.

6. An inkjet printing platform, characterized in that: include: A base, used for carrying a display component; as well as A vibration device, the vibration device is arranged on at least one side of the base and contacts the base, and the vibration device is turned on after the ink droplets of the encapsulation layer of the display component are printed; The inkjet printing platform further includes a curing lamp, which is used to cure the concave portions between adjacent ink droplets; The curing light is a strip light, which is movably arranged on a side of the base away from the display component. When the curing light moves to a position corresponding to the recessed portion, the curing light is turned on, and when the curing light moves to a position corresponding to the protruding portion, the curing light is turned off; or, the curing light is a light box, which is arranged on a side of the base away from the display component, and has a plurality of light emitting slits, each of which corresponds to a recessed portion between two adjacent columns of ink droplets; or, the curing light comprises a plurality of LED chips arranged in an array, which are arranged on a side of the base away from the display component, and each of which corresponds to a recessed portion between adjacent ink droplets.

7. The inkjet printing platform according to claim 6, characterized in that: The base comprises a first side surface and a second side surface which are arranged opposite to each other, and the first side surface and the second side surface are both provided with the vibration device.

8. The inkjet printing platform according to claim 7, characterized in that: The vibration device located on the first side surface and the vibration device located on the second side surface are symmetrically arranged.

9. The inkjet printing platform according to any one of claims 6 to 8, characterized in that: The vibration device includes an ultrasonic control box and a transducer; The ultrasonic control box is connected to a power supply voltage and amplifies the electric energy frequency of the power supply voltage. The transducer is connected to the ultrasonic control box, receives the power supply voltage after the electric energy frequency is amplified, and converts the power supply voltage into mechanical vibration.

10. The inkjet printing platform according to claim 9, characterized in that: The vibration device also includes an amplitude transformer, one end of which is connected to the transducer, and the other end of which is in contact with the base. The amplitude transformer receives the mechanical vibration and is used to adjust the amplitude of the mechanical vibration.

11. The inkjet printing platform according to claim 6, characterized in that: The base is made of transparent quartz.

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