Coating method of coating for heat dissipation of chip

Abstract

The invention discloses a coating smearing method applied to chip heat dissipation, and the method comprises the steps: completely packaging a specified amount of coating in a containing groove, moving a mounting seat until a groove opening of the containing groove faces a smearing region, then removing the sealing of the groove opening of the containing groove, moving the mounting seat downwards, and smearing the coating on the mounting seat. The bottom surface of the mounting base is attached to the top surface of the to-be-coated part, so that the coating is located in a space defined by the coating area and the containing groove, then the surface, located above the containing groove, of the mounting base is pressed, and the pressing position is changed, so that elastic deformation of the bottom wall of the containing groove can drive the coating to be coated in the coating area; and compared with an existing mode that liquid metal is repeatedly smeared through a rolling brush for multiple times, the coating technology of the coating is simplified.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular to a method for applying a coating for chip heat dissipation. Background Art

[0002] With the development of electronic devices towards miniaturization, integration, and high frequency, the power consumption of electronic components has been continuously increasing, resulting in an increase in the temperature of electronic components. Excessive temperature will reduce the service life of electronic components or even cause failure. In order to efficiently dissipate the heat generated by electronic chips, thermal interface materials are usually used to fill the thermal exchange interface between the electronic chip and the radiator to reduce the contact thermal resistance between the electronic chip and the radiator.

[0003] Currently, the commonly used thermal interface materials are thermal conductive silicone grease, thermal conductive gaskets, etc. However, their thermal conductivity is low and cannot meet the heat dissipation requirements of electronic components under high power. The thermal conductivity of liquid metal is ten times or even dozens of times that of traditional thermal interface materials, and it can efficiently complete the heat transfer between the chip and the radiator.

[0004] However, liquid metal also has the characteristics of fluidity and conductivity. If it leaks due to improper sealing on the core board, it will cause short circuits of other electronic components. At the same time, the wettability between liquid metal and the surface material of the chip is poor. Currently, the application method of liquid metal is complex, and it requires multiple roller brush applications to complete the application of a specified amount of liquid metal.

[0005] In view of this, it is necessary to provide a new method for applying a coating for chip heat dissipation to solve or at least alleviate the above technical defects. Summary of the Invention

[0006] The main purpose of the present invention is to provide a method for applying a coating for chip heat dissipation, aiming to solve the technical problem of the complex existing liquid metal application process.

[0007] To achieve the above purpose, the present invention provides a method for applying a coating for chip heat dissipation, and the steps of the coating application method include:

[0008] Encapsulate the coating into the receiving groove of the mounting seat;

[0009] Move the mounting seat so that the opening of the receiving groove faces the coating area of the workpiece to be coated;

[0010] Release the seal of the opening of the receiving groove, and then move the mounting seat to make the mounting seat fit with the workpiece to be coated; so that the coating is located in the space surrounded by the coating area and the receiving groove;

[0011] Press the side of the mounting seat away from the workpiece to be coated and change the pressing position, so that the bottom wall of the receiving groove deforms and drives the coating to be applied in the coating area.

[0012] In one embodiment, the mounting base further includes a first cover plate for sealing or exposing the notch of the receiving groove. The steps of sealing or exposing the notch of the receiving groove include:

[0013] Moving the first cover plate to seal the notch of the receiving groove;

[0014] Or, moving the first cover plate to release the seal on the notch of the receiving groove.

[0015] In one embodiment, the plane of the mounting base on the side where the receiving groove is provided is in contact with the first cover plate. The steps of moving the first cover plate to release the seal on the notch of the receiving groove include:

[0016] Moving the first cover plate and keeping the plane of the first cover plate facing the receiving groove in contact with the side of the mounting base facing the workpiece to be coated until the first cover plate releases the seal on the notch of the receiving groove.

[0017] In one embodiment, the mounting base further includes a dust removal sticker. After the step of moving the mounting base so that the notch of the receiving groove faces the coating area of the workpiece to be coated, it includes:

[0018] Attaching one side of the dust removal sticker to the coating area;

[0019] Removing the dust removal sticker so that the dust removal sticker removes foreign matters in the coating area.

[0020] In one embodiment, the step of attaching one side of the dust removal sticker to the coating area includes:

[0021] Moving the dust removal sticker until one side of the dust removal sticker is in contact with the side of the first cover plate facing away from the receiving groove;

[0022] Fixing the mounting base to the workpiece to be coated and driving the dust removal sticker to move until the other side of the dust removal sticker is in contact with the coating area.

[0023] In one embodiment, an exhaust hole is formed through the bottom wall of the receiving groove. Before the step of encapsulating the coating material into the receiving groove of the mounting base, it includes:

[0024] Blocking the exhaust hole from the side of the mounting base facing away from the receiving groove;

[0025] Before the step of pressing the side of the mounting base away from the workpiece to be coated and changing the pressing position, it includes:

[0026] Removing the blockage of the exhaust hole from the side of the mounting base facing away from the receiving groove.

[0027] In one embodiment, the step of pressing the side of the mounting seat away from the workpiece to be coated and changing the pressing position comprises:

[0028] Press the mounting seat away from the side of the workpiece to be painted and change the pressing position until the paint overflows from the exhaust hole.

[0029] In one embodiment, the step of pressing the mounting seat away from the side of the workpiece to be coated and changing the pressing position until the coating overflows from the exhaust hole comprises:

[0030] The mounting seat is pressed away from a side of the workpiece to be coated, and the pressed position is moved toward the exhaust hole until the coating overflows from the exhaust hole.

[0031] In one embodiment, there are multiple exhaust holes, and the multiple exhaust holes are arranged along the first direction to form an exhaust hole group; the step of pressing the mounting seat away from a side of the workpiece to be coated and moving the pressing position toward the exhaust hole until the paint overflows from the exhaust hole comprises:

[0032] The mounting seat is pressed away from one side of the workpiece to be coated, and the pressed position is moved along a second direction toward the exhaust hole group until the paint overflows from a plurality of the exhaust holes in the exhaust hole group; wherein the second direction is perpendicular to the first direction.

[0033] In one embodiment, the step of pressing the mounting seat away from a side of the workpiece to be coated and moving the pressing position toward the exhaust hole until the coating overflows from the exhaust hole comprises:

[0034] Press the mounting seat away from the side of the workpiece to be coated, and move the pressing position toward the exhaust hole;

[0035] Determining whether the paint overflows from the exhaust hole on the side of the mounting seat away from the containing groove;

[0036] If not, repeat the steps of pressing the side of the mounting seat away from the workpiece to be coated and moving the pressing position toward the exhaust hole until the paint overflows from the exhaust hole.

[0037] In the above technical solution of the present invention, a specified amount of coating is completely encapsulated in the receiving groove. The mounting seat is moved so that the notch of the receiving groove faces the coating area, and then the seal of the notch of the receiving groove is released. The mounting seat is moved downward so that the bottom surface of the mounting seat fits against the top surface of the workpiece to be coated, so that the coating is located in the space enclosed by the coating area and the receiving groove. Then, the surface of the mounting seat above the receiving groove is pressed and the pressing position is changed, so that the elastic deformation of the bottom wall of the receiving groove can drive the coating to be applied in the coating area, thereby applying a specified amount of coating in the coating area at one time. Compared with the existing roller brush that repeatedly applies liquid metal multiple times, the coating application process is simplified. Among them, the coating can be liquid metal, and the workpiece to be coated can be a chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0039] Figure 1 It is a schematic flow chart of the first embodiment of the coating application method according to an embodiment of the present invention;

[0040] Figure 2 It is a schematic flow chart of the second embodiment of the coating application method according to an embodiment of the present invention;

[0041] Figure 3 It is a schematic flow chart of the third embodiment of the coating application method according to an embodiment of the present invention;

[0042] Figure 4 It is a schematic flow chart of the fourth embodiment of the coating application method according to an embodiment of the present invention;

[0043] Figure 5 It is a schematic flow chart of the fifth embodiment of the coating application method according to an embodiment of the present invention;

[0044] Figure 6 It is a schematic flow chart of the sixth embodiment of the coating application method according to an embodiment of the present invention;

[0045] Figure 7 It is a schematic structural diagram of a coating application device according to an embodiment of the present invention;

[0046] Figure 8 It is a schematic structural diagram of another perspective of a coating application device according to an embodiment of the present invention;

[0047] Figure 9 It is an exploded structural diagram of a coating application device according to an embodiment of the present invention;

[0048] Figure 10 Exploded structural schematic diagram of another perspective of the coating device according to an embodiment of the present invention;

[0049] Figure 11 Partial structural schematic diagram of the coating equipment according to an embodiment of the present invention;

[0050] Figure 12 Cross-sectional structural schematic diagram of the coating equipment according to an embodiment of the present invention;

[0051] Figure 13 is Figure 12 Partial enlarged schematic diagram at A;

[0052] Figure 14 is Figure 12 Partial enlarged schematic diagram at B;

[0053] Figure 15 is Figure 12 Partial enlarged schematic diagram at C.

[0054] Explanation of the reference numerals in the drawings:

[0055]

[0056]

[0057] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0059] It should be noted that all the directional indications (such as up, down, left, right) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (such as shown in the attached Figure 7 drawings). If the specific posture changes, the directional indications will also change accordingly.

[0060] In addition, the descriptions such as "first" and "second" in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features.

[0061] Furthermore, the technical solutions between the various embodiments of the present invention can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0062] The present invention provides a coating method for heat dissipation of a chip. In one embodiment, referring to Figure 1 , Figure 1 This is a schematic diagram of the process of the first embodiment of the coating application method according to an embodiment of the present invention, referring to Figures 7 to 12 As shown, the steps of the coating application method include:

[0063] S100, packaging the coating into a receiving groove of the mounting seat;

[0064] The paint is packaged into the receiving groove 1113 of the mounting seat 11 so as to transport the paint and prevent the paint from leaking and coming into contact with air during transportation to cause oxidation. The paint is packaged into the receiving groove 1113 of the mounting seat 11 by either packaging the paint into the receiving groove 1113 of the mounting seat 11 with a sealing structure, or loading the paint into the mounting groove 1113 and then sealing the notch of the receiving groove 1113 through an external sealing structure. There is no limitation here.

[0065] S200, moving the mounting seat to a coating area where the notch of the receiving groove faces the workpiece to be coated;

[0066] Since the paint needs to flow out from the notch of the receiving groove 1113 to the coating area 212 , the mounting base 11 needs to be moved so that the notch of the receiving groove 1113 faces the coating area.

[0067] S300, releasing the seal of the notch of the receiving groove, and then moving the mounting seat until the mounting seat is in contact with the object to be coated, so that the coating is located in the space enclosed by the coating area and the receiving groove;

[0068] In order to allow the paint to be applied to the coating area 212, it is necessary to release the seal on the notch of the receiving groove 1113. If the mounting seat 11 has a built-in sealing structure, the seal on the paint can be released by opening the corresponding sealing structure, or a through hole can be opened to connect the notch of the receiving groove 1113 to release the seal on the paint. If the notch of the receiving groove 1113 is sealed by an external sealing structure, the corresponding external sealing structure is removed; the mobile mounting seat 11 is fitted with the top surface of the part to be coated 21 so that the paint is located in the space enclosed by the coating area 212 and the groove wall of the receiving groove 1113 to prevent the paint from leaking out of the part to be coated 21. If the part to be coated 21 is a chip 21a and the paint is liquid metal, the short circuit caused by the liquid metal leaking out of the chip 21a can be effectively avoided.

[0069] S400, pressing the side of the mounting seat away from the workpiece to be coated and changing the pressing position, so that the bottom wall of the receiving groove is elastically deformed and drives the paint to be coated in the coating area.

[0070] The area on the top surface of the mounting seat 11 above the workpiece 21 to be coated is pressed to deform the bottom wall of the receiving groove 1113. The deformed bottom wall will push the paint to move. The pressing position is changed while pressing, thereby driving the paint to move in the coating area 212. Through multiple movements and pressing, the paint can be distributed as evenly as possible in the coating area 212. The mounting seat 11 can be made of elastic material or plastic material. Generally, an elastic material is selected so that the mounting seat 11 can restore its original shape after elastic deformation, thereby making the mounting seat 11 reusable.

[0071] The specified amount of paint is completely encapsulated into the receiving groove 1113, the mounting seat 11 is moved until the notch of the receiving groove 1113 faces the coating area 212, and then the seal of the notch of the receiving groove 1113 is released, and the mounting seat 11 is moved downward so that the bottom surface of the mounting seat 11 fits with the top surface of the part to be coated 21, so that the paint is located in the space surrounded by the coating area 212 and the receiving groove 1113, and then the surface of the mounting seat 11 located above the receiving groove 1113 is pressed and the pressing position is changed, so that the elastic deformation of the bottom wall of the receiving groove 1113 can drive the paint to be coated in the coating area 212, so that the specified amount of paint is coated in the coating area at one time, which simplifies the coating process compared to the existing roller brush repeatedly coating liquid metal. The paint can be liquid metal, and the part to be coated 21 can be a chip 21a.

[0072] Reference Figure 2 , Figure 2Schematic flowchart of the second embodiment of the coating application method according to an embodiment of the present invention. In one embodiment, the mounting base further includes a first cover plate for sealing or exposing the opening of the receiving groove. The steps of sealing or exposing the opening of the receiving groove include:

[0073] Moving the first cover plate to seal the opening of the receiving groove;

[0074] Or, moving the first cover plate to release the seal on the opening of the receiving groove.

[0075] Among them, the steps of S100 include: S110, loading the coating into the receiving groove of the mounting base and moving the first cover plate to seal the opening of the receiving groove; the steps of releasing the seal on the opening of the receiving groove include: moving the first cover plate to release the seal on the opening of the receiving groove. The coating is applied to the coating area 212 of the workpiece to be coated 21 by the coating device 1. The coating device 1 includes a mounting base 11, the mounting base 11 includes a cover plate assembly 12, a receiving groove 1113 is formed in the bottom surface of the mounting base 11 for receiving the coating, and the bottom surface of the mounting base 11 is used to fit against the top surface of the workpiece to be coated 21; the cover plate assembly 12 includes a first cover plate 121, and the first cover plate 121 can seal or expose the opening of the receiving groove 1113.

[0076] It should be noted that the mounting base 11 is turned over so that the notch of the receiving groove 1113 faces upward, the coating material is placed in the receiving groove 1113, and then the first cover plate 121 is pushed to seal the notch of the receiving groove 1113, so that the coating material in the receiving groove 1113 is in a closed space, thereby preventing the coating material from leaking and oxidizing during the movement of the mobile coating device 1; the mounting base 11 is turned over again so that the notch of the receiving groove 1113 faces downward, the first cover plate 121 is placed on the coating area 212, and the first cover plate 121 is withdrawn. The direction of withdrawing the first cover plate 121 can be the same as or opposite to the direction of pushing the first cover plate 121 to seal the notch of the receiving groove 1113, which is not limited herein; after the first cover plate 121 is withdrawn, the mounting base 11 is pressed downward so that the bottom surface of the mounting base 11 fits against the top surface of the workpiece to be coated 21. The top surface of the workpiece to be coated 21 can seal the notch of the receiving groove 1113 to prevent the liquid metal from leaking outside the mounting base 11. Since a small amount of air will inevitably enter the receiving groove 1113 during the process of withdrawing the first cover plate 121, the coating material can flow from the receiving groove 1113 into the coating area 212. Then, by pressing the top surface of the mounting base 11 above the receiving groove 1113 and sliding on the top surface of the mounting base 11, the area where the bottom wall 1114 of the receiving groove undergoes elastic deformation changes, so that the coating material is driven to move in the coating area 212 by the bottom wall 1114 of the receiving groove, so that the coating material is distributed as evenly as possible in the coating area 212. The coating material can include liquid metal, and the workpiece to be coated 21 can include a chip 21a. Since the coating device 1 can move all the specified amount of liquid metal to the coating area 212 at one time, the process of repeatedly moving the liquid metal by the existing roller brush is simplified; moreover, by pressing the top surface of the mounting base 11 above the receiving groove 1113 and moving the pressing position, the liquid metal is spread evenly. Compared with the existing roller brush that repeatedly applies the liquid metal multiple times, the coating process of the liquid metal is further simplified, and the coating device 1 has a simple structure and is convenient for processing and manufacturing. It should be noted that if the acting area of the force acting on the top surface of the mounting base 11 extends in the width direction of the receiving groove 1113, the moving direction of the acting force extends in the length direction of the receiving groove 1113. The acting force starts to move from one of the two groove walls of the receiving groove 1113 that are oppositely arranged along its length direction, and then moves to the position where the other groove wall is located, so as to apply the liquid metal as evenly as possible in the coating area 212. It should also be noted that the coating area 212 can be the entire top surface of the chip 21a or a partial area of the top surface of the chip 21a, which is not limited herein.

[0077] According to one embodiment of the present invention, the mounting seat 11 includes a seat body 111 and a mounting platform assembly 112 that are interconnected. The bottom surface 1111 of the seat body is provided with a receiving groove 1113. The bottom surface 1111 of the seat body is used to fit with the top surface of the workpiece 21 to be coated. The mounting platform assembly 112 is provided with a first through hole 11211 for slidingly cooperating with the first cover plate 121 and a second through hole 11221 for slidingly cooperating with the dust removal sticker 13. The first cover plate 121 is guided by the first through hole 11211 so that the first cover plate 121 can move smoothly in a determined direction; similarly, the dust removal sticker 13 is guided by the second through hole 11221 so that the dust removal sticker 13 can move smoothly in a determined direction; and the first through hole 11211 also plays a certain limiting role on the first cover plate 121, that is, it limits the downward movement of the first cover plate 121, thereby ensuring the reliability of the sealing of the notch of the accommodating groove 1113 by the first cover plate 121; the second through hole 11221 also plays a certain limiting role on the dust removal sticker 13, so as to limit the downward movement of the dust removal sticker 13, thereby ensuring the reliability of the fit between the dust removal sticker 13 and the first cover plate 121.

[0078] In one embodiment, the first cover plate is in contact with a plane of the mounting seat on one side of which the receiving groove is provided, and the step of moving the first cover plate to release the seal on the notch of the receiving groove comprises:

[0079] The first cover plate is moved and the plane of the first cover plate facing the receiving groove is kept in contact with the side of the mounting seat facing the part to be coated until the first cover plate releases the seal on the notch of the receiving groove.

[0080] In the process of releasing the notch seal of the receiving groove 1113, the first cover plate 121 during the movement remains in contact with the bottom surface of the mounting seat 11, on the one hand to prevent the liquid metal from leaking out of the chip 21a from the gap between the first cover plate 121 and the bottom surface of the mounting seat 11, and on the other hand to reduce the amount of liquid metal attached to the first cover plate 121; it should be noted that the top wall 11212 of the first through hole is flush with the bottom surface 1111 of the seat body, so that the top surface 1213 of the first cover plate can be in contact with the bottom surface 1111 of the seat body. The top surface 1213 of the first cover plate is in contact with the bottom surface 1111 of the seat body, so that the receiving groove 1113 can be effectively sealed to prevent the liquid metal in the receiving groove 1113 from leaking and oxidizing.

[0081] Reference Figure 3 , Figure 3 This is a flow chart of a third embodiment of a coating application method according to an embodiment of the present invention. In one embodiment, the mounting base further includes a dust removal sticker, and the following steps are included after step S200:

[0082] S210. Attach one side of the dust removal sticker to the application area.

[0083] S220. Remove the dust removal sticker so that the dust removal sticker removes foreign objects in the application area.

[0084] By setting the dust removal sticker 13 to fit with the application area 212, the dust removal sticker 13 can adhere to the dust and foreign objects in the application area 212. Then, by removing the dust removal sticker 13, the dust and foreign objects adhered to the dust removal sticker 13 will leave the application area 212 together with the dust removal sticker 13, thus effectively removing the dust and foreign objects in the application area 212.

[0085] According to an embodiment of the present invention, the mounting base 11 includes a base body 111 and a mounting table assembly 112 connected to each other. A receiving groove 1113 is formed on the bottom surface 1111 of the base body. The bottom surface 1111 of the base body is used to fit with the top surface of the workpiece to be coated 21. The mounting table assembly 112 is provided with a first through hole 11211 for slidably cooperating with the first cover plate 121 and a second through hole 11221 for slidably cooperating with the dust removal sticker 13. The first through hole 11211 guides the first cover plate 121 so that the first cover plate 121 can move smoothly along a determined direction. Similarly, the second through hole 11221 guides the dust removal sticker 13 so that the dust removal sticker 13 can move smoothly along a determined direction. And the first through hole 11211 also plays a certain limiting role on the first cover plate 121, that is, restricting the downward movement of the first cover plate 121, thereby ensuring the reliability of the sealing of the notch of the receiving groove 1113 by the first cover plate 121. The second through hole 11221 also plays a certain limiting role on the dust removal sticker 13 to restrict the downward movement of the dust removal sticker 13, thereby ensuring the reliability of the fit between the dust removal sticker 13 and the first cover plate 121.

[0086] Refer to Figure 4 , Figure 4 is a schematic flowchart of the fourth embodiment of the coating application method according to an embodiment of the present invention. In one embodiment, the steps of S210 include:

[0087] S211. Move the dust removal sticker until one side of the dust removal sticker fits with the side of the first cover plate away from the receiving groove.

[0088] S212. Fix the mounting base to the workpiece to be coated and drive the dust removal sticker to move until the other side of the dust removal sticker fits with the application area.

[0089] Refer to Figures 7 to 15As shown, the bottom surface 1214 of the first cover plate is in contact with the top surface 133 of the dust removal sticker, thus avoiding the influence of the air existing between the first cover plate 121 and the dust removal sticker on the uniform coating of the liquid metal, and effectively reducing the probability of bubble generation during the coating process; the bottom surface 134 of the dust removal sticker is used to be in contact with the coating area 212, so as to better remove dust and foreign matters in the coating area 212. It should be noted that since the top surface 133 of the dust removal sticker is in contact with the bottom surface 1214 of the first cover plate, when the dust removal sticker 13 is pulled out, the dust and foreign matters on the bottom surface 1214 of the first cover plate can also be removed. It should also be noted that the bottom wall 11213 of the first through hole is in contact with the bottom surface 1214 of the first cover plate, the top wall 11222 of the second through hole is in contact with the top surface 133 of the dust removal sticker, the bottom surface 1214 of the first cover plate and the top wall 11222 of the second through hole are arranged in the same plane, and the bottom wall 11213 of the first through hole and the top surface 133 of the dust removal sticker are arranged in the same plane, so that the bottom surface 1214 of the first cover plate can be in contact with the top surface 133 of the dust removal sticker. Among them, the first cover plate 121 slides along the axial direction of the first through hole 11211, and the dust removal sticker 13 slides along the axial direction of the second through hole 11221. Since the bottom surface 1214 of the first cover plate is in contact with the bottom wall 11213 of the first through hole, and the top surface 133 of the dust removal sticker is in contact with the top wall 11222 of the second through hole, in order to ensure that the bottom surface 1214 of the first cover plate can be in contact with the top surface 133 of the dust removal sticker, it is necessary to arrange the bottom surface 1214 of the first cover plate and the top wall 11222 of the second through hole in the same plane, and the bottom wall 11213 of the first through hole and the top surface 133 of the dust removal sticker in the same plane. It should be noted that the first through hole 11211 and the second through hole 11221 are respectively arranged on two different mounting platforms, and the two mounting platforms can be arranged at intervals relative to each other in a certain direction, or the extending directions of the two mounting platforms are perpendicular to each other.

[0090] According to an embodiment of the present invention, the dust removal sticker is slidably matched with the mounting seat, so that the mounting seat can drive the dust removal sticker to move together when moving. Specifically, the mounting platform assembly 112 includes a first mounting platform 1121 and a second mounting platform 1122. The first mounting platform 1121 and the second mounting platform 1122 are oppositely arranged on both sides of the receiving groove 1113 along the first direction. The first mounting platform 1121 is provided with a first through hole 11211, and the second mounting platform 1122 is provided with a second through hole 11221. Among them, the first direction is Figure 1In the left-right direction shown, if the first through hole 11211 and the second through hole 11221 are provided on the same mounting table, it will cause the parts of the first cover plate 121 and the dust removal sticker 13 exposed outside the seat body 111 to be on the same side. When it is necessary to pull out the dust removal sticker 13, the dust removal sticker 13 is pulled out from the second through hole 11221 by pulling the part of the dust removal sticker 13 exposed outside the seat body 111. However, since the parts of the first cover plate 121 and the dust removal sticker 13 exposed outside the seat body 111 are on the same side, when pulling the part of the dust removal sticker 13 exposed outside the seat body 111, it may accidentally touch the part of the first cover plate 121 exposed outside the seat body 111, resulting in the movement of the first cover plate 121 and further causing the leakage of liquid metal. In this embodiment, the first mounting table 1121 and the second mounting table 1122 are oppositely arranged on the left and right sides of the receiving groove 1113, and the first mounting table 1121 is provided with the first through hole 11211, and the second mounting table 1122 is provided with the second through hole 11221. When it is necessary to pull out the dust removal sticker 13 from the second through hole 11221, since one end of pulling out the first cover plate 121 and one end of pulling out the dust removal sticker 13 are respectively on the left and right sides of the receiving groove 1113, it is easier to operate and there will be no accidental touch phenomenon. According to an embodiment of the present invention, the first mounting table 1121 and the second mounting table 1122 can also be perpendicularly arranged, that is, the extending direction of the first mounting table 1121 is perpendicular to the extending direction of the second mounting table 1122.It should be noted that the first cover plate 121 includes a first handle portion 1212 and a first plate body 1211 that are interconnected. The top surface of at least part of the body of the first plate body 1211 is used to fit with the bottom surface 1111 of the seat body, so that the first plate body 1211 can cover the notch of the receiving groove 1113 to prevent the liquid metal in the receiving groove 1113 from leaking and oxidizing. When at least part of the body of the first plate body 1211 fits with the bottom surface 1111 of the seat body to cover the notch of the receiving groove 1113, the rest of the body of the first plate body 1211 can be located in the first through hole 11211, or at least part of the body of the first handle portion 1212 can be located in the first through hole 11211, thereby limiting the up and down movement of the first cover plate 121; the first handle portion 1212 is also at least partially exposed outside the seat body 111, which is convenient for users to draw Pulling the first handle portion 1212 drives the first plate 1211 to cover or expose the notch of the accommodating groove 1113; the dust removal sticker 13 includes a pull-out portion 131 and a dust removal portion 132 that are connected to each other, and at least part of the body of the dust removal portion 132 is fitted with the first plate 1211 located below the seat body 111. The remaining part of the body of the dust removal portion 132 may be located in the second through hole 11221, or part of the body of the pull-out portion 131 may be located in the second through hole 11221, thereby limiting the up and down movement of the dust removal sticker 13, and the bottom surface of the dust removal portion 132 and the area below the seat body 111 are used to fit with the application area 212, thereby removing dust and foreign matter in the application area 212, and at least part of the body of the pull-out portion 131 is exposed outside the seat body 111, so that the user can easily drive the dust removal portion 132 to move through the exposed part of the pull-out portion 131.

[0091] Reference Figure 5 , Figure 5 1 is a flow chart of a fifth embodiment of a coating application method according to an embodiment of the present invention. In one embodiment, a vent hole 1115 is formed through the bottom wall 1114 of the receiving groove. The vent hole is formed on the bottom wall of the receiving groove.

[0092] The steps of S100 previously include:

[0093] S90, shielding the exhaust hole from a side of the mounting seat away from the receiving groove;

[0094] The step of the position of S400 includes:

[0095] S390, removing the covering of the exhaust hole from the side of the mounting seat away from the receiving groove.

[0096] Among them, an exhaust hole 1115 is formed in the bottom wall 1114 of the receiving groove. By providing the exhaust hole 1115, when the top surface 1112 of the seat body located above the receiving groove 1113 is pressed and the pressing position is moved, the air in the receiving groove 1113 can be discharged from the exhaust hole 1115, thereby reducing the probability of bubbles appearing in the coating area 212; and the shielding of the exhaust hole 1115 can be achieved by filling the exhaust hole 1115 to shield the exhaust hole 1115, or by an external component to shield the orifice of the exhaust hole 1115, which is not limited herein; and the release of the shielding of the exhaust hole 1115 can be achieved by removing the filler in the exhaust hole 1115, or by removing the external component, which is also not limited herein; specifically, a groove 1116 is formed in the top surface of the mounting seat 11, the exhaust hole 1115 penetrates through the bottom wall 11162 of the groove, and the cover plate assembly 12 further includes a second cover plate 122 for shielding or exposing the exhaust hole 1115. Among them, a groove 1116 is formed in the top surface 1112 of the seat body. By providing the exhaust hole 1115, during the coating process of the liquid metal, the air in the receiving groove 1113 can be discharged from the exhaust hole 1115, thereby effectively reducing the probability of bubble generation. During the process of loading the liquid metal into the receiving groove 1113, since the second cover plate 122 seals the exhaust hole 1115, the leakage of the liquid metal from the exhaust hole 1115 is effectively avoided. It should be noted that a thin-wall structure exists between the bottom wall 11162 of the groove and the bottom wall 1114 of the receiving groove. By minimizing the distance between the bottom wall 11162 of the groove and the bottom wall 1114 of the receiving groove as much as possible, the elastic deformation of the bottom wall 1114 of the receiving groove can be more easily used to drive the liquid metal to move, so that the liquid metal is evenly distributed in the coating area 212. A communication hole 11161 communicating with the groove 1116 is formed in the side wall of the seat body 111. The bottom wall of the communication hole 11161 is coplanar with the bottom wall 11162 of the groove. The second cover plate 122 is slidably engaged with the communication hole 11161, and the bottom surface 1223 of the second cover plate can be attached to the bottom wall 11162 of the groove, so that the second cover plate 122 can shield or expose the exhaust hole 1115. When it is necessary to press the bottom wall 11162 of the groove to make the liquid metal evenly distributed, the second cover plate 122 is pulled out from the communication hole 11161, so that the acting force can directly act on the bottom wall 11162 of the groove. By providing the communication hole 11161, the movement of the second cover plate 122 is guided through the communication hole 11161, so that the second cover plate 122 can move stably along a determined direction. And when the second cover plate 122 shields the exhaust hole 1115, the communication hole 11161 can also play a certain limiting role on the second cover plate 122, that is, restricting the second cover plate 122 from moving away from the exhaust hole 1115 along the axial direction of the exhaust hole 1115.It should be noted that the second cover plate 122 includes a second handle portion 1222 and a second plate body 1221 that are connected to each other. The bottom surface of at least a part of the body of the second plate body 1221 is used to fit against the groove wall of the groove 1116 close to the accommodating groove 1113, so as to block the exhaust hole 1115 exposed on the groove wall, thereby preventing liquid metal from leaking from the exhaust hole 1115 during the process of filling the accommodating groove 1113 with liquid metal. When at least a part of the body of the second plate body 1221 is located in the groove 1116 and blocks the exhaust hole 1115, at least a part of the body of the second handle portion 1222 is exposed outside the seat body 111, so that the user can drive the second plate body 1221 to move through the second handle portion 1222.

[0097] According to an embodiment of the present invention, the first handle portion 1212 is provided with a first identifier 1215, the second handle portion 1222 is provided with a second identifier 1224, and the pulling portion 131 is provided with a pulling identifier 135, so as to facilitate the user to distinguish them.

[0098] In one embodiment, the steps of S400 include:

[0099] S410, press the side of the mounting seat away from the workpiece to be coated and change the pressing position until the coating material overflows from the exhaust hole.

[0100] By pressing the plane of the mounting seat 11 away from the side of the workpiece to be coated 21 and changing the pressing position, the gas that is also squeezed during the process of evenly applying the coating material can be discharged from the exhaust hole 1115. When most of the air is discharged, the coating material will overflow from the exhaust hole 1115. The occurrence of this phenomenon indicates that most of the air in the accommodating groove 1113 has been discharged through the exhaust hole 1115, thereby effectively reducing the probability of bubbles appearing in the coating area 212. It should be noted that the mounting seat can be pressed by fingers or by an external component. Specifically, the coating device 1 further includes a scraper 14, and the scraper 14 is used to apply the coating material on the coating area 212 through the groove wall of the groove 1116 facing the accommodating groove 1113. The scraper 14 acts on the first groove wall through the communication hole 11161, and by scraping the first groove wall with the scraper 14, the liquid metal can be more evenly distributed in the coating area 212. It should be noted that the extending direction of the scraper 14 is perpendicular to the sliding direction of the first cover plate 121, and the sliding direction of the scraper 14 is opposite to the moving direction when the first cover plate 121 is withdrawn from the first through hole 11211.

[0101] In one embodiment, the steps of S410 include:

[0102] S411, press the side of the mounting seat away from the workpiece to be coated and move the pressing position in the direction close to the exhaust hole until the coating material overflows from the exhaust hole.

[0103] Refer to Figure 6 , Figure 6 which is a schematic flow chart of the sixth embodiment of the coating application method according to an embodiment of the present invention. In one embodiment, the number of exhaust holes is multiple, and the multiple exhaust holes are arranged along a first direction to form an exhaust hole group; the step of S411 includes:

[0104] S4111, press the side of the mounting seat away from the workpiece to be coated, and move the pressing position along a second direction towards the direction close to the exhaust hole group until the coating material overflows from each of the multiple exhaust holes in the exhaust hole group; wherein the second direction is perpendicular to the first direction.

[0105] Among them, the number of the exhaust holes 1115 is multiple, and the multiple exhaust holes 1115 are arranged at intervals along a direction perpendicular to the sliding direction of the first cover plate 121, and the multiple exhaust holes 1115 are arranged close to the position where the second through hole 11221 is located. Taking the first through hole 11211 on the left side as an example, when the first cover plate 121 moves to the left, it is being pulled out, and during the pulling-out process, part of the liquid metal will move to the left together with the first cover plate 121. This will cause the volume of the liquid metal on the left side of the accommodation cavity to be larger than the volume of the liquid metal on the right side of the accommodation cavity after the first cover plate 121 is completely pulled out. In order to make the liquid metal evenly coated, the squeegee 14 needs to scrape the groove wall of the groove 1116 close to the accommodation groove 1113 along the direction opposite to the pulling-out direction of the first cover plate 121, so that the air in the accommodation groove 1113 moves from left to right and is discharged from the exhaust holes 1115. When the liquid metal flows out of the ventilation holes, it means that the air has been exhausted and the liquid metal is evenly distributed in the coating area 212. It should be noted that since the bottom surface 1111 of the seat body is attached to the top surface of the chip 21a during the coating process, the liquid metal during the coating process is in a sealed state, thus ensuring that the liquid metal will not deteriorate during the coating process. It should be noted that the volume of the accommodation groove 1113 is larger than the volume of the liquid metal. Thus, during the coating process, it helps to discharge the air in the accommodation groove 1113 through the exhaust holes 1115. It should also be noted that a direction mark 1118 is provided on the top surface 1112 of the seat body, and the pointing direction of the direction mark 1118 is opposite to the movement direction when the first cover plate 121 is pulled out of the first through hole 11211, so that the user can operate the squeegee 14 to scrape the groove wall of the groove 1116 close to the accommodation groove 1113 along the direction pointed by the direction mark 1118; a placement groove 1117 is provided on the seat body 111, and the placement groove 1117 is used to store the squeegee 14. By providing the placement groove 1117 for placing the squeegee 14, it is convenient for the storage of the squeegee 14.

[0106] According to an embodiment of the present invention, the seat body 111 is made of a transparent material; and / or, the seat body 111 is made of an elastic material. When the seat body 111 is made of a transparent material, the user can clearly see the distribution of the liquid metal in the coating area 212 through the seat body 111, which helps to understand the coating condition of the liquid metal and helps to evenly coat the liquid metal in the coating area 212; the seat body 111 is made of an elastic material, so as to ensure that the seat body 111 has good ductility, and the thin-walled structure between the first groove wall and the bottom wall 1114 of the receiving groove is matched, so that the thin-walled structure can produce greater deformation under the action of the scraper 14, which helps to coat the liquid metal more evenly, wherein the seat body 111 can be made of PVC (full name in English: Polyvinyl chloride, Chinese name: polyvinyl chloride). The first cover plate 121 and the second cover plate 122 are both made of materials that are not easy to adhere to paint. Similarly, the first cover plate 121 and the second cover plate 122 are both made of a material with poor wettability to liquid metal to prevent the first cover plate 121 and the second cover plate 122 from sticking to the liquid metal; the first cover plate 121 and the second cover plate 122 can also be made of PVC material.

[0107] According to another embodiment of the present invention, the mounting seat 11 further includes a plurality of positioning platforms 113, which are all mounted on the bottom surface 1111 of the seat body, and are used to position the workpiece 21 to be coated. The positioning platforms 113 are used to position the chip 21a to prevent the chip 21a from sliding relative to the seat body 111, thereby preventing the liquid metal from leaking out of the chip 21a. The second through hole 11221 passes through the positioning boss, and a support step 1131 is formed on the positioning boss, which is used to abut against the bottom surface of the dustproof sheet, thereby supporting the dustproof sheet.

[0108] In one embodiment, a preset position is provided on a side of the mounting seat away from the receiving groove, and the preset position is provided close to the exhaust hole; the step S411 includes:

[0109] S4111', pressing the mounting seat away from the side of the workpiece to be coated, and moving the pressing position toward the direction close to the exhaust hole;

[0110] S4112, determining whether the paint has overflowed from the exhaust hole on the side of the mounting seat away from the containing groove;

[0111] S4113, repeating the steps of pressing the mounting seat away from the side of the workpiece to be coated and moving the pressing position toward the exhaust hole until the paint overflows from the exhaust hole.

[0112] Pressing once and moving the position of the press may not be able to expel most of the air in the accommodation groove 1113. Therefore, it can be determined whether it is necessary to repeat the operation of pressing the top surface of the mounting seat 11 and moving it to a preset position by observing whether there is liquid metal discharging from the air vent 1115. When there is only one air vent 1115, as long as there is paint overflowing from the air vent 1115, it indicates that most of the air in the accommodation groove 1113 is discharged through the air vent 1115. If the number of air vents 1115 is multiple, it is necessary to determine whether there is paint overflowing from all the multiple air vents 1115. If not, repeat the step of pressing the plane on the side of the mounting seat 11 away from the workpiece to be coated 21 and moving it from a position away from the air vent 1115 to the preset position. If so, it also indicates that most of the air in the accommodation groove 1113 is discharged through the air vent 1115, and the pressing on the top surface of the mounting seat 11 can be stopped.

[0113] According to an embodiment of the present invention, the coating includes liquid metal, and the workpiece to be coated includes a chip. The step of applying liquid metal to the application area on the top surface of the chip may be as follows: The step of applying liquid metal to the application area 212 on the chip 21a may be to first place the second cover plate 122 in the groove 1116 to block the exhaust hole 1115, then drop the liquid metal into the receiving groove 1113. After the liquid metal is loaded, push the first cover plate 121 to slide relative to the first through hole 11211 so that the first cover plate 121 seals the notch of the receiving groove 1113 to prevent the liquid metal from leaking and oxidizing during the process of moving the coating device 1. Then push the dust removal sticker 13 to slide relative to the second through hole 11221 so that the top surface 133 of the dust removal sticker fits the bottom surface of the liquid metal. Then fix the seat body 111 on the chip 21a through the positioning boss. At this time, the side of the dust removal sticker 13 facing away from the first plate body 1211 fits the application area 212. Pull out the dust removal sticker 13 from the second through hole 11221, thereby taking away the dust and impurities in the application area 212. Then pull out the first cover plate 121 from the first through hole 11211, and press down the seat body 111 so that the bottom surface 1111 of the seat body fits the surface of the chip 21a to prevent the liquid metal from leaking outside the chip 21a. Without the shielding of the first cover plate 121, the liquid metal will flow from the receiving groove 1113 to the application area 212. Then remove the second cover plate 122, take out the scraper 14 from the placement groove 1117, and operate the scraper 14 to scrape and press the groove wall on the side of the groove 1116 facing the receiving groove 1113 in the direction opposite to the moving direction when the first cover plate 121 is pulled out, so that the bottom wall 1114 of the receiving groove undergoes elastic deformation, and the liquid metal in the receiving groove 1113 is evenly applied to the application area 212 under the extrusion of the bottom wall of the receiving groove 1113. During the application process, the air in the receiving groove 1113 will be discharged through the exhaust hole 1115. When liquid metal overflows from the exhaust hole 1115, it can be determined that the application of the application area 212 of the chip 21a has been completed. Remove the coating device 1, and the liquid metal will be evenly applied to the application area 212 of the chip 21a.

[0114] The above is only the preferred embodiment of the present invention, and it does not limit the patent scope of the present invention. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A method for applying a coating for chip heat dissipation, characterized in that, The steps of the coating application method include: Packing the coating into the receiving groove of the mounting seat; Move the mounting seat to a coating area where the notch of the receiving groove faces the workpiece to be coated; Unsealing the notch of the receiving groove, and then moving the mounting seat until the mounting seat is in contact with the object to be coated, so that the coating is located in the space enclosed by the coating area and the receiving groove; Press the mounting seat away from the side of the workpiece to be coated and change the pressing position, so that the bottom wall of the receiving groove is deformed and drives the coating to be coated in the coating area.

2. The method for applying the coating for chip heat dissipation according to claim 1, wherein The mounting seat further includes a first cover plate, the first cover plate being used to seal or expose the notch of the receiving groove, and the step of sealing or exposing the notch of the receiving groove includes: Move the first cover plate to seal the notch of the receiving groove; Alternatively, the first cover plate is moved to release the seal on the notch of the receiving groove.

3. The method for applying the coating for chip heat dissipation according to claim 2, characterized in that, The mounting seat is provided with a plane on one side of the receiving groove in contact with the first cover plate, and the step of moving the first cover plate to release the seal on the notch of the receiving groove includes: The first cover plate is moved and the plane of the first cover plate facing the receiving groove is kept in contact with the side of the mounting seat facing the object to be coated until the first cover plate releases the seal on the notch of the receiving groove.

4. The method for applying the coating for chip heat dissipation according to claim 2, characterized in that, The mounting seat further includes a dust removal sticker, and after the step of moving the mounting seat to a coating area where the notch of the receiving groove faces the coating area of ​​the piece to be coated, the step includes: Adhere one side of the dust removal sticker to the application area; The dust removal sticker is removed so that the dust removal sticker removes foreign matter in the application area.

5. The method for applying the coating for chip heat dissipation according to claim 4, wherein The step of attaching one side of the dust removal sticker to the application area comprises: Move the dust removal sticker until one side of the dust removal sticker is in contact with the side of the first cover plate facing away from the receiving groove; The mounting base is fixed to the workpiece to be coated, and the dust removal sticker is driven to move to the other side of the dust removal sticker to fit the coating area.

6. The method for applying the coating for chip heat dissipation according to any one of claims 1 to 5, characterized in that, The bottom wall of the receiving groove is penetrated with an exhaust hole, and the step of packaging the paint into the receiving groove of the mounting seat includes: shielding the exhaust hole from a side of the mounting seat away from the receiving groove; The step of pressing the mounting seat away from the side of the workpiece to be coated and changing the pressing position includes: The exhaust hole is unblocked from a side of the mounting seat away from the accommodating groove.

7. The method for applying the coating for chip heat dissipation according to claim 6, wherein The step of pressing the mounting seat away from the side of the workpiece to be coated and changing the pressing position comprises: Press the mounting seat away from the side of the workpiece to be painted and change the pressing position until the paint overflows from the exhaust hole.

8. The method for applying the coating for chip heat dissipation according to claim 7, wherein The step of pressing the mounting seat away from the side of the workpiece to be coated and changing the pressing position until the coating overflows from the exhaust hole comprises: The mounting seat is pressed away from a side of the workpiece to be coated, and the pressed position is moved toward the exhaust hole until the coating overflows from the exhaust hole.

9. The method for applying the coating for chip heat dissipation according to claim 8, wherein The number of the exhaust holes is multiple, and the multiple exhaust holes are arranged along a first direction to form an exhaust hole group; the step of pressing the side of the mounting seat away from the workpiece to be coated and moving the pressing position in a direction close to the exhaust holes until the paint overflows from the exhaust holes includes: Press the side of the mounting seat away from the workpiece to be coated, and move the pressing position in a second direction close to the exhaust hole group until the paint overflows from each of the multiple exhaust holes in the exhaust hole group; wherein the second direction is perpendicular to the first direction.

10. The method for applying the coating for chip heat dissipation according to claim 8, characterized in that, The step of pressing the side of the mounting seat away from the workpiece to be coated and moving the pressing position in a direction close to the exhaust holes until the paint overflows from the exhaust holes includes: Press the side of the mounting seat away from the workpiece to be coated, and move the pressing position in a direction close to the exhaust holes; Judge whether the paint overflows from the exhaust holes on the side of the mounting seat facing away from the receiving groove; If not, repeat the step of pressing the side of the mounting seat away from the workpiece to be coated and moving the pressing position in a direction close to the exhaust holes until the paint overflows from the exhaust holes.

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