CN111842015A - Printing device and printing method - Google Patents

Abstract

The invention discloses a printing device and a printing method, wherein the printing device comprises a printing plate, the printing plate comprises a printing plate body and a storage tank which are connected, the storage tank is provided with a feeding hole and a discharging hole which are separated from each other, the opening direction of the feeding hole faces to a first direction, the opening direction of the discharging hole faces to a second direction, the feeding hole is used for receiving paint, and the paint is output to a device to be printed through the discharging hole. The invention realizes the coating and printing operation of the device to be printed through a simple structure, can greatly simplify the process, can reduce the equipment development cost, can realize the uniform coating of the coating through the control of the structures of the feed inlet and the discharge outlet, the control of the flow rate of the coating and the like, and ensures the printing quality.

Description

Printing device and printing method

technical field

The present invention relates to the technical field of printing, and in particular, to a printing device and a printing method.

Background technique

In many fields, it is necessary to use the printing process to print and coat the surface of the product.

Taking the field of semiconductor packaging technology as an example, it is generally necessary to form an electromagnetic shielding layer on the outside of the packaging structure. At present, it is mainly achieved through the following two processes:

1. The manual spraying process has the following defects:

(1) The efficiency of manual operation is low, and stability cannot be guaranteed, resulting in the inability to effectively realize industrialization;

(2) Manual spraying cannot ensure coating uniformity and electrical continuity, and there is a high risk of electromagnetic leakage;

(3) The controllability of manual spraying is poor, the conductive materials are easily polluted, and the influence of artificial static electricity on the performance of electronic products cannot be avoided.

2. Electrostatic spraying process:

The principle of the electrostatic spraying process is to use the grounded device to be printed as the positive electrode, and the oil atomizer is connected to the high voltage as the negative electrode. The electrostatic spraying process has the following defects:

(1) The investment in equipment is high and there are environmental pollution problems caused by industrial ions;

(2) The danger of fire is high. When the spark discharge is caused by improper spray distance or operation error, it is easy to cause a fire;

(3) On the surface of the device to be printed with complex shape or deep contour, due to the tip current effect, the conductive adsorption ability of the distal end or gully area is weak, which makes it difficult to obtain a uniform coating by the electrostatic spraying process.

Therefore, how to overcome the above-mentioned defects is an urgent problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a printing device and a printing method which can simplify the process, reduce the cost and ensure the quality at the same time.

In order to achieve one of the above purposes of the invention, an embodiment of the present invention provides a printing device, including a printing board, the printing board includes a printing board body and a storage tank connected to each other, and the storage tank has a feeding port separated from each other and a discharge port, the opening direction of the feed port faces the first direction, and the opening direction of the discharge port faces the second direction, wherein the feed port is used to receive paint, and the paint passes through the The discharge port is output to the device to be printed.

As a further improvement of an embodiment of the present invention, there is a first included angle between the first direction and the second direction, and the first included angle is 90°.

As a further improvement of an embodiment of the present invention, the storage tank is formed by connecting a first side surface, a bottom surface, and a second side surface in sequence, and the side of the first side surface away from the bottom surface is connected to the printing board body, and the The second side surface and the printed board body are disconnected from each other, wherein the feed port is formed between the first side surface and the second side surface, and the discharge port is arranged at the second side surface .

As a further improvement of an embodiment of the present invention, the first side surface is perpendicular to the printed board body, the first side surface and the second side surface are parallel to each other, the bottom surface is a closed surface, and the bottom surface includes The first bottom surface and the second bottom surface are connected, an obtuse angle is formed between the first bottom surface and the second bottom surface toward the feed port, the first bottom surface is connected to the first side surface, and the first bottom surface is connected to the first side surface. The bottom surface is perpendicular to the first side surface, and the second bottom surface connects the first bottom surface and the second side surface.

As a further improvement of an embodiment of the present invention, the printing board body includes at least one opening window, the first side surface surrounds a boundary forming the opening window, and the feeding port is located at the orthographic projection of the opening window within the area.

As a further improvement of an embodiment of the present invention, the printing device further includes a stage, the stage is used to carry a device to be printed, and the device to be printed includes a first surface and a second surface arranged oppositely and connected to the a first surface, a side surface of the second surface, the second surface faces the stage, the second side surrounds an open cavity, wherein when the device to be printed is in the first position , the first surface faces the opening, the paint flows through the opening and the feeding port to the storage tank, and the paint is formed on the first surface, when the When the device to be printed is located at the second position, a relative displacement is generated between the side surface of the device to be printed and the outlet, and the paint is formed on the side surface from the outlet.

As a further improvement of an embodiment of the present invention, the printing board body includes a plurality of openings arranged in an array, the printing device includes a plurality of storage slots corresponding to the openings, and at least some of the storage slots corresponding to the adjacent openings The grooves are connected to each other.

As a further improvement of an embodiment of the present invention, a side of the printing plate body away from the storage tank is provided with a placement area for accommodating paint, and the printing device further includes a scraper, and the scraper is used to drive the paint in the placement area Enter the fenestration.

As a further improvement of an embodiment of the present invention, the device to be printed is a package structure, the coating material is a conductive material, and the conductive material is formed on the package structure as a shielding layer.

In order to achieve one of the above purposes of the invention, an embodiment of the present invention provides a printing method, comprising the steps of:

Provide the printing device and the device to be printed according to any one of the above, the device to be printed includes a first surface and a side surface disposed around the first surface;

driving paint to be formed on the first surface, and driving the paint to enter the storage tank from the feed port;

The side surface of the device to be printed is driven to face the outlet, and the paint is formed on the side surface from the outlet.

Compared with the prior art, the beneficial effect of the present invention is that: the feeding port of the storage tank according to an embodiment of the present invention receives the paint, and then cooperates with the discharge port of the storage tank to directly output the paint to the device to be printed, through The simple structure realizes the coating and printing operation of the device to be printed, which can greatly simplify the process and reduce the equipment development cost. The uniform coating ensures the printing quality. In addition, this embodiment eliminates the difficulty of manual operation and the lack of quality. The printing process of this embodiment is safe and environmentally friendly, and will not cause problems such as ion pollution, electrostatic discharge or fire.

Description of drawings

1 is a perspective view of a printing apparatus according to an embodiment of the present invention;

2 is a cross-sectional view of a device to be printed according to an embodiment of the present invention without being printed;

3 is a cross-sectional view of printing on the first surface of the device to be printed according to an embodiment of the present invention;

4 is a cross-sectional view of a side surface of a device to be printed that is printed on an embodiment of the present invention;

FIG. 5 is a cross-sectional view of the device to be printed after the printing is completed according to an embodiment of the present invention;

6 is a step diagram of a printing method according to an embodiment of the present invention.

Detailed ways

The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the protection scope of the present invention.

In various figures of the present application, some dimensions of structures or parts are exaggerated relative to other structures or parts for convenience of illustration, and thus, are only used to illustrate the basic structure of the subject matter of the present application.

Additionally, terms such as "upper," "over," "lower," "below," and the like, referring to spatially relative positions, are used herein for convenience of description to describe an element or feature as shown in the figures relative to one another. A relationship to another unit or feature. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

1 and 2 , it is a schematic diagram of a printing apparatus 100 according to an embodiment of the present invention.

The printing device 100 includes a printing board 10 , and the printing board 10 includes a printing board body 11 and a storage tank 12 which are connected to each other.

Here, the printing board body 11 may be a steel mesh body, and the printing board body 11 and the storage tank 12 may be integrally formed, or they may be formed separately and then assembled together.

The storage tank 12 has a feeding port 121 and a discharging port 122 separated from each other.

The opening direction of the feeding port 121 faces the first direction X, and the feeding port 121 is used for receiving the paint 200 .

The opening direction of the discharge port 122 faces the second direction Y, and the paint 200 is output to the device to be printed 300 through the discharge port 122 .

It should be noted that, corresponding to different to-be-printed parts of the device 300 to be printed, the discharge port 122 may have different opening directions, that is, the second direction Y may actually be defined as multiple directions.

Here, the feeding port 121 of the storage tank 12 receives the paint 200, and then cooperates with the discharge port 122 of the storage tank 12 to directly output the paint 200 to the device to be printed 300, and the device to be printed 300 is realized through a simple structure. The coating and printing operation can greatly simplify the process and reduce the cost of equipment development. At the same time, the uniform coating of the coating material 200 can be achieved by controlling the structure of the feeding port 121 and the discharging port 122, and controlling the flow rate of the coating material 200, ensuring that Printing quality, in addition, this embodiment eliminates the difficulty of manual operation and quality shortage, the printing process of this embodiment is safe and environmentally friendly, and will not cause problems such as ion pollution, electrostatic discharge or fire.

In this embodiment, the device 300 to be printed is an encapsulation structure and the paint 200 is a conductive material as an example for description.

In practical application, in order to avoid electromagnetic interference from the external environment to the chips inside the package structure, it is generally necessary to form an electromagnetic shielding layer on the outside of the package structure, that is, the conductive material here is formed on the package structure as a shielding layer.

In addition, in this embodiment, the front and side surfaces of the package structure are coated with conductive materials to realize three-dimensional printing as an example. In other embodiments, printing on other surfaces of the package structure is also possible.

It should be noted that the printing device 100 of this embodiment can also be used for coating and printing operations of other structures. The coating object is not limited to the package structure, and the coating material is not limited to the conductive material, which can be determined according to the actual situation.

In this embodiment, there is a first included angle between the first direction X and the second direction Y, and preferably, the first included angle is 90°.

That is, the first direction X is perpendicular to the second direction Y, where the first direction X is defined as a vertical direction, and the second direction Y is defined as a horizontal direction.

In a specific example, the device 300 to be printed includes a first surface 301, a second surface 302 and a side surface 303 connecting the first surface 301 and the second surface 302 as an example for illustration, that is, the device 300 to be printed is a For the block-like structure, the coating 200 needs to be formed at the first surface 301 and the side surface 303, and the side surface 303 generally includes four connected surfaces.

In this example, the storage tank 12 is formed by connecting the first side surface 123 , the bottom surface 124 and the second side surface 125 in sequence.

The side of the first side surface 123 away from the bottom surface 124 is connected to the printed board body 11 , and the second side surface 125 and the printed board body 11 are disconnected from each other.

That is, the first side surface 123 is connected to the printed board body 11 , and the side of the second side surface 125 away from the bottom surface 124 is a free end and is not connected to the printed board body 11 .

The feeding port 121 is formed between the first side surface 123 and the second side surface 125 , and the discharging port 122 is disposed at the second side surface 125 .

At this time, the storage tank 12 is roughly in the shape of a colander, the upper end of the colander-shaped structure is formed with a feed port 121 for receiving the paint 200 , and the side of the colander-shaped structure is formed with a discharge port 122 for outputting the paint 200 .

The first side surface 123 is perpendicular to the printed board body 11 , and the first side surface 123 and the second side surface 125 are parallel to each other.

The bottom surface 124 is a closed surface, and the bottom surface 124 includes a first bottom surface 1241 and a second bottom surface 1242 connected to each other, and an obtuse angle toward the feed port 121 is formed between the first bottom surface 1241 and the second bottom surface 1242 .

The first bottom surface 1241 is connected to the first side surface 123 , the first bottom surface 1241 is perpendicular to the first side surface 123 , and the second bottom surface 1242 is connected to the first bottom surface 1241 and the second side surface 125 .

That is to say, the first bottom surface 1241 is a plane extending in the horizontal direction, and the second bottom surface 1242 is an inclined surface arranged obliquely, that is, the opening diameter of the storage tank 12 tends to decrease from top to bottom. In this way, the storage tank can be made The paint 20 is stored as much as possible, and the second bottom surface 1242 is retracted relative to the second side surface 125 to prevent the second bottom surface 1242 from interfering with the device to be printed 300 during the coating and printing process.

It can be understood that, in order to adapt to the structure of the device 300 to be printed, the first side surface 123 and the second side surface 125 of the present example are configured as annular structures, that is, the storage tank 12 is an annular structure, corresponding to the side surface 303 of the device to be printed 300 . Both are provided with a discharge port 122, and at this time, the opening directions of the discharge port 122 are in multiple directions.

In actual operation, the storage tank 12 can also be a linear structure or other structures, for example, the coating and printing operation of the side surface 303 can be realized by rotating the device to be printed 300 .

The printing board body 11 includes at least one opening window 111 , the first side surface 123 surrounds the boundary forming the opening window 111 , and the feeding port 121 is located in the orthographic projection area of the opening window 111 .

That is to say, the storage tank 12 is located directly below the window 111, and the storage tank 12 is located at the edge area of the window 111. The window 111 is used to form the coating material 200 at the first surface 301 of the device 300 to be printed, and the storage tank 12 is located at the edge area of the window 111. The chute 12 is used to form the coating material 200 at the side surface 303 of the device 300 to be printed.

The window opening 111 is a fully open skylight or a semi-opening skylight, that is to say, the window opening 111 may be a fully open window opening that is completely hollow, or a structure such as a grille is formed in the window opening 111 so that the window opening 111 is formed. It is a semi-open skylight.

In actual operation, the printing device 100 further includes a stage and a base, the printing board body 11 includes a plurality of openings 111 arranged in an array, and the printing device 12 includes a plurality of storage tanks 12 corresponding to the openings 111 .

The stage is used for carrying the device to be printed 300, and the second surface 302 of the device to be printed 300 faces the stage.

Here, the stage may include a work area where the device to be printed 300 is placed.

The to-be-printed device 300 can be positioned at a corresponding position in the work area by the positioning member. Preferably, to avoid mutual interference between the stage and the printing plate 10 during the printing process, the to-be-printed device 300 can be fixed by vacuum adsorption.

An open cavity P is formed around the second side surface 125 of the storage tank 12 .

When the device to be printed 300 is in the first position, referring to FIG. 3 , the printing board 10 and the stage are fixed on the base, that is, the device to be printed 300 and the printing board 10 are relatively stationary at this time, and the first surface 301 of the device to be printed 300 is Facing the opening 111 , the paint 200 flows through the opening 111 and the feeding port 121 to the storage tank 12 , and the paint 200 is formed on the first surface 301 .

Here, the size of the device to be printed 300 is smaller than the size of the opening of the opening window 111 , when the device to be printed 300 is located at the first position, the device to be printed 300 is lower than the upper surface 112 of the printing board body 11 , and the device to be printed 300 corresponds to the opening window The middle position of 111 is set, there is an interval A between the device to be printed 300 and the first side 123 of the storage tank 12, and the interval A just exposes the feeding port 121. When the paint 200 enters the window 111, a part of the paint 200 directly contacts Formed on the first surface 301 of the device 300 to be printed, another part of the paint flows directly into the storage tank 12 through the interval A and the feeding port 121 under the action of gravity.

Preferably, the device to be printed 300 at this time is located above the open cavity P, that is, the device to be printed 300 has not yet entered the open cavity P, but not limited to this, for example, at least a part of the device to be printed at this time. 300 is located in the open cavity P, etc., which can be determined according to the actual situation.

It should be noted that, during this process, part of the paint 200 may also flow to the side surface 303 of the device to be printed 300 to ensure the interconnection between the paint 200 on the first surface 301 and the paint 200 on the side surface 303 .

The side of the printing board body 11 away from the storage tank 12 in this embodiment (ie, the upper surface 112 of the printing board body 11 ) is provided with a placement area 1121 for accommodating the paint 200 (refer to FIG. 1 and FIG. 2 ). The printing device 100 further includes The scraper 13 is used to drive the paint 200 in the placement area 1121 into the window 111 .

Here, a placement area 1121 can be provided on one side edge of the printing plate body 11, and the back and forth movement of the scraper 13 can transport the paint 200 into each of the openings 111, and can realize the removal of the paint 200 on the first surface 301 of the device 300 to be printed. Smoothing, that is, the uniform coating of the paint 200 is achieved.

When the to-be-printed device 300 is located at the second position (the to-be-printed device 300 is changed from the first position to the second position), referring to FIG. 4 , the printing board 10 is still fixed on the base, and the carrier moves relative to the base to drive the to-be-printed device 300 moves. At this time, a relative displacement occurs between the device to be printed 300 and the discharge port 122. During this process, the paint 200 in the storage tank 12 is gradually formed on the side surface 303 of the device to be printed 300 from the discharge port 122. , the uniform coating of the paint 200 on the side surface 303 can be achieved by controlling the moving speed of the device 300 to be printed.

It should be noted that, the paint 200 may be formed on the side surface 303 during the relative displacement of the device to be printed 300 and the discharge port 122, or the paint 200 may be formed on the side surface 303 after the device to be printed 300 is located in the open cavity P. side surface 303 .

Here, the size of the device to be printed 300 may be slightly smaller than the size of the open cavity P. When the device to be printed 300 moves relative to the discharge port 122 in the open cavity P, the side surface 303 of the to-be-printed device 300 and the discharge port 122 There is a small gap between them, and the paint 200 is a conductive material with a certain viscosity. Since the paint 200 has wettability, when the height of the paint 200 in the storage tank 12 reaches the discharge port 122, the paint 200 can actively flow out and form. On the side surface 303 of the device 300 to be printed, in this way, the coating and printing operation of the side surface 303 of the device 300 to be printed is completed.

Then, referring to FIG. 5 , after the printing is completed, continue to control the movement of the device to be printed 300 so that the device to be printed 300 is separated from the open cavity P, at this time, the device to be printed 300 printed with the paint 200 can be put into the baking device The coating material 200 is cured by heating and baking.

In this embodiment, the coating and printing operation is realized by the movement of the device to be printed 300 relative to the printing plate 10 . In other embodiments, the coating printing operation or other working modes may also be realized by the movement of the printing plate 10 relative to the device to be printed 300 . It can be determined according to the actual situation.

It can be seen that this embodiment can realize continuous coating and printing of the first surface 301 and the side surface 303 of the device 300 to be printed, and can ensure that the coatings 200 on the first surface 301 and the side surface 303 are interconnected and evenly distributed. A simple printing device 100 and a simple process can realize difficult three-dimensional printing, while meeting the requirements of efficiency, cost and quality.

In this embodiment, the storage tanks 12 and the windows 111 are provided in a one-to-one correspondence, that is, the storage tanks 12 of the adjacent windows 111 are arranged separately from each other.

In other embodiments, at least some of the storage tanks 12 corresponding to the adjacent windows 111 are connected to each other, that is to say, the adjacent windows 111 share the paint 200 in the storage tank 12, and the paint 200 is supplied from different outlets. 122 is output to a different device to be printed 300 .

An embodiment of the present invention also provides a printing method. With reference to the above description of the printing device 100 and FIGS. 2 to 5 , the printing method includes the steps:

S1: provide the printing device 100 and the device to be printed 300, the device to be printed 300 includes a first surface 301 and a side surface 303 disposed around the first surface 301;

S2: Referring to FIG. 3, the driving paint 200 is formed on the first surface 301, and the paint 200 is driven to enter the storage tank 12 from the feeding port 121;

Specifically, this step includes:

transporting the device 300 to be printed to the work area of the stage;

Install the printed board 10 on the base, and determine the position of the printed board 10 through optical point recognition and positioning, and fix the printed board 10 and the base to each other;

The stage moves to move the device to be printed 300 to the first position. At this time, the device to be printed 300 is approximately located above the open cavity P, and the first surface 301 of the device to be printed 300 is slightly lower than the upper surface of the printed board body 11 The surface 112 fixes the stage and the base to each other, that is, the relative stationary between the device 300 to be printed and the printing board 10;

The paint 200 is placed in the placement area 1121 of the printing plate body 11, and the scraper 13 reciprocates so that a part of the paint 200 is formed on the first surface 301, and another part of the paint 200 enters the storage tank 12 through the feeding port 121;

S3: Drive the side surface 303 of the device to be printed 300 to face the discharge port 122 , and the paint 200 is formed on the side surface 303 from the discharge port 122 .

Specifically, this step includes:

With reference to FIG. 4 , keep the printing board 10 fixed on the base, and drive the stage to move relative to the base, the device 300 to be printed gradually approaches and passes through the open cavity P, and a relative displacement occurs between the device 300 to be printed and the discharge port 122 , During this process, the paint 200 in the storage tank 12 is gradually formed on the side surface 303 of the device to be printed 300 from the discharge port 122 .

Here, referring to FIG. 5 , after the printing is completed, continue to control the stage to drive the device to be printed 300 to move so that the device to be printed 300 is separated from the open cavity P, and after the molding of the paint 200 is completed, the device to be printed is heated and baked The coating 300 at 300 cures to form the finished product.

The printing process of this embodiment realizes the coating and printing operation of the device to be printed 300 through a simple structure, which can greatly simplify the process and reduce the equipment development cost. The control of the paint 200, the flow rate control of the paint 200, etc. realize the uniform coating of the paint 200, which ensures the printing quality. In addition, this embodiment eliminates the difficulty of manual operation and the lack of quality. The printing process of this embodiment is safe and environmentally friendly, and will not Causes problems such as ionic contamination, electrostatic discharge or fire.

For other descriptions of the printing process in this embodiment, reference may be made to the descriptions of the aforementioned printing apparatus 100 , which will not be repeated here.

To sum up, the feeding port 121 of the storage tank 12 of the present invention receives the paint 200, and then cooperates with the discharge port 122 of the storage tank 12 to directly output the paint 200 to the device to be printed 300, which is realized by a simple structure. The coating and printing operation of the device 300 to be printed can be greatly simplified, and the equipment development cost can be reduced. The uniform coating ensures the printing quality. In addition, the present invention eliminates the difficulty of manual operation and the lack of quality. The printing process of this embodiment is safe and environmentally friendly, and will not cause problems such as ion pollution, electrostatic discharge or fire.

The present invention can realize continuous coating and printing of the first surface 301 and the side surface 303 of the device 300 to be printed, and can ensure that the coatings 200 on the first surface 301 and the side surface 303 are interconnected and evenly distributed, using a simple printing device 100 And the technology can realize the difficult 3D printing, and meet the needs of efficiency, cost and quality at the same time.

It should be understood that although this specification is described in terms of embodiments, not every embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, and each The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not used to limit the protection scope of the present invention. Changes should all be included within the protection scope of the present invention.

Claims (10)

1. A printing device, characterized in that it comprises a printing plate, and the printing plate comprises a connected printing plate body and a storage tank, and the storage tank has a feeding port and a discharging port that are separated from each other. The opening direction of the material port faces the first direction, and the opening direction of the material outlet port faces the second direction, wherein the material inlet port is used to receive paint, and the paint is output to the device to be printed through the discharge port superior. 2 . The printing apparatus according to claim 1 , wherein a first included angle is formed between the first direction and the second direction, and the first included angle is 90°. 3 . 3 . The printing device according to claim 2 , wherein the storage tank is formed by connecting a first side surface, a bottom surface and a second side surface in sequence, and a side of the first side surface away from the bottom surface is connected to the The printed board body, the second side surface and the printed board body are disconnected from each other, wherein the feed port is formed between the first side surface and the second side surface, and the discharge port is arranged at at the second side. 4 . The printing device according to claim 3 , wherein the first side surface is perpendicular to the printing board body, the first side surface and the second side surface are parallel to each other, and the bottom surface is a closed surface. 5 . , and the bottom surface includes a connected first bottom surface and a second bottom surface, an obtuse angle is formed between the first bottom surface and the second bottom surface toward the feed port, and the first bottom surface is connected to the first side surface , and the first bottom surface is perpendicular to the first side surface, and the second bottom surface connects the first bottom surface and the second side surface. 5 . The printing device according to claim 3 , wherein the printing board body comprises at least one opening window, the first side surface surrounds a boundary forming the opening window, and the feeding port is located at the opening. 6 . within the orthographic projection area of the window. 6 . The printing device according to claim 5 , wherein the printing device further comprises a stage, the stage is used to carry the device to be printed, the device to be printed comprises a first surface, a second surface and a second surface disposed opposite to each other. 7 . Two surfaces and a side surface connecting the first surface and the second surface, the second surface faces the stage, and the second side surrounds an open cavity, wherein when the to-be-printed When the device is in the first position, the first surface faces the opening, the paint flows through the opening and the feeding port to the storage tank, and the paint is formed on the first opening. a surface, when the device to be printed is located at the second position, a relative displacement is generated between the side surface of the device to be printed and the discharge port, and the paint is formed on the side surface from the discharge port . 7 . The printing device according to claim 5 , wherein the printing plate body includes a plurality of openings arranged in an array, and the printing device includes a plurality of storage slots corresponding to the openings, at least partially adjacent to each other. 8 . The storage tanks corresponding to the windows are connected to each other. 8 . The printing device according to claim 5 , wherein a side of the printing plate body away from the storage tank is provided with a placement area for accommodating paint, the printing device further comprises a scraper, and the scraper is used for the scraper. 9 . The paint in the drive placement area enters the fenestration. 9 . The printing apparatus according to claim 1 , wherein the device to be printed is a package structure, the paint is a conductive material, and the conductive material is formed on the package structure as a shielding layer. 10 . 10. A printing method, characterized in that, comprising the steps: Provide the printing apparatus and the device to be printed according to any one of claims 1-9, the device to be printed includes a first surface and a side surface disposed around the first surface; driving paint to be formed on the first surface, and driving the paint to enter the storage tank from the feed port; The side surface of the device to be printed is driven to face the outlet, and the paint is formed on the side surface from the outlet.

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