EMI backing plate

Abstract

The present invention relates to an electromagnetic shielding plate. According to an embodiment of the present invention, the invention comprises a body plate having at least one opening and a channel connecting the opening on an upper surface, and a top plate having the same shape as the upper surface of the body plate and coupled to the upper surface.

Description

Technology Field

[0001] The present invention relates to an electromagnetic shielding plate for shielding electromagnetic waves introduced into raw materials. Background Technology

[0002] Semiconductor devices are commonly found in modern electronic products. They perform a wide range of functions, such as signal processing, high-speed computing, electromagnetic signal transmission and reception, electronic device control, conversion of sunlight into electricity, and generation of visual images for television displays. Semiconductor devices can be found in the fields of communications, power conversion, networks, computers, entertainment, and consumer products. They are also seen in military applications, aviation, automobiles, industrial controllers, and office equipment.

[0003] Semiconductor devices are often susceptible to interference between other devices, such as electromagnetic interference (EMI), radio frequency interference (RFI), harmonic distortion, or capacitive, inductive, or conductive coupling also known as crosstalk, which can disrupt their operation. High-speed switching in digital circuits also generates interference.

[0004] A conductive layer is typically formed on a semiconductor package to shield electronic components within the package from EMI and other interference. The shielding layer absorbs EMI before signals reach the semiconductor dies and discrete components within the package, which could otherwise cause device malfunction. The shielding layer is also formed on a package containing components expected to generate EMI to prevent malfunction of peripheral devices.

[0005] Many factors can make proper EMI shielding difficult. Many conventional shielding methods do not allow for sufficient heat dissipation and cannot produce semiconductor packages with a low enough profile to meet today's consumer demands. Therefore, new solutions for EMI shielding are required.

[0006] The technology forming the background of the present invention is disclosed in Korean Published Patent No. 10-2022-0027894 (published on March 8, 2022). The problem to be solved

[0007] The present invention was developed to solve the above problems and aims to provide an electromagnetic shielding plate that shields electromagnetic waves while simultaneously rapidly removing heat generated during the shielding of electromagnetic waves. means of solving the problem

[0008] According to an embodiment of the present invention, the invention comprises a body plate having at least one opening and a channel connecting the opening on an upper surface, and a top plate having the same shape as the upper surface of the body plate and coupled to the upper surface.

[0009] The above body plate includes a first plate, a second plate, and a third plate, and the second plate may be formed to be smaller in size than the first plate.

[0010] The third plate is formed on the upper surface of the second plate and can form the flow path.

[0011] The third plate above includes an inlet and a discharge, and the flow path may be formed as a curve connecting the inlet and the discharge.

[0012] The above-mentioned flow path may include a first flow path extending from the inlet portion to the center portion of the second plate, a second flow path including a first curve perpendicular to the end of the first flow path, a third flow path including a second curve in the shape of an 'S' in the second flow path, and a fourth flow path including a third curve formed in the vertical direction of the third flow path.

[0013] The above-mentioned Euro includes a fourth bend that is vertical at the end of the fourth Euro, a fifth Euro formed such that the center of the fourth bend is drawn into the center portion of the second plate, and a sixth Euro including a fifth bend formed in a hairpin shape at the end of the fifth Euro, and the end of the sixth Euro can be connected to the discharge portion.

[0014] It includes a flow prevention member formed in each of the first, second, and third bends; wherein the flow prevention member may be formed at the center of the width of the second, third, and fourth flow paths.

[0015] The above body plate and the above top plate may be formed from any one of copper, aluminum, nickel, stainless steel, or silver.

[0016] According to another embodiment of the present invention, the body plate comprises at least one opening and a flow plate coupled to the rear surface of the body plate and comprising a flow path.

[0017] The above flow plate includes an inlet and a discharge, and the flow path may be formed as a curve connecting the inlet and the discharge.

[0018] The above-mentioned flow path may include a first flow path extending from the inlet portion to the center portion of the flow plate, a second flow path including a first curve perpendicular to the end of the first flow path, a third flow path including a second curve in the shape of an 'S' in the second flow path, and a fourth flow path including a third curve formed in the vertical direction of the third flow path.

[0019] The above-mentioned Euro includes a fourth bend that is vertical at the end of the fourth Euro, a fifth Euro formed such that the center of the fourth bend is drawn into the center portion of the flow plate, and a sixth Euro including a fifth bend formed in a hairpin shape at the end of the fifth Euro, and the end of the sixth Euro can be connected to the discharge portion.

[0020] A flow prevention portion formed in the curved portions of the second, third, and fourth euros; wherein the flow prevention portion is an electromagnetic shielding plate formed at the center of the width of the second, third, and fourth euros. Effects of the invention

[0021] According to the present invention having the above method and features, it is attached to the rear surface of a raw material and can shield electromagnetic waves generated during the operation of a device.

[0022] In addition, by forming an internal flow path and cooling the heat generated during the operation of the device as the refrigerant flows through the path, electromagnetic waves can be shielded more effectively. Brief explanation of the drawing

[0023] FIG. 1 is a drawing for explaining an electromagnetic shielding plate according to an embodiment of the present invention. FIG. 2 is a drawing for explaining in detail a body plate according to an embodiment of the present invention. FIG. 3 is a drawing for explaining an electromagnetic shielding plate according to another embodiment of the present invention. FIG. 4 is a drawing for explaining a flow plate according to another embodiment of the present invention. FIG. 5 is a drawing showing the shape of an electromagnetic shielding plate and a raw material combined according to an embodiment of the present invention. Specific details for implementing the invention

[0024] The present invention is capable of various modifications and may take various forms, and embodiments (aspects or examples) are to be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed forms, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0025] The terms used in this specification are used merely to describe specific embodiments (aspects or examples) and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “comprising” or “consisting of” are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0026] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0027] The terms "~1~," "~2~," etc., described in this specification are used merely to distinguish different components and are not bound by the order of manufacture; furthermore, the names may not match those in the detailed description of the invention and the claims.

[0028] delete

[0029] FIG. 1 is a drawing for explaining an electromagnetic shielding plate according to an embodiment of the present invention, FIG. 2 is a drawing for explaining in detail a body plate according to an embodiment of the present invention, FIG. 3 is a drawing for explaining an electromagnetic shielding plate according to another embodiment of the present invention, FIG. 4 is a drawing for explaining a flow plate according to another embodiment of the present invention, and FIG. 5 is a drawing showing the shape of an electromagnetic shielding plate and a raw material combined according to an embodiment of the present invention.

[0030] The electromagnetic shielding plate (100) is attached to the target raw material (300) and used.

[0031] As shown in FIGS. 1 and 2, the electromagnetic shielding plate (100) according to an embodiment of the present invention includes a top plate (110) and a body plate (120). First, as shown in FIG. 5, the electromagnetic shielding plate (100) is formed so that the front surface of the raw material (300) is joined to the rear surface. Although FIGS. 1 to 5 show a triangular shape with a circular vertex, it can be changed according to the shape of the raw material (300).

[0032] As shown in FIG. 1, the top plate (110) according to an embodiment of the present invention has the same shape as the body plate (120) so as to be attached to the upper surface of the body plate (120). The top plate (110) is joined to the third plate (123) of the body plate (120) and joined through a brazing joining method. At this time, the brazing joining method is a technique that joins the base material by heating the joint area to melt only the filler material without melting the base material, and when the top plate (110) is joined to the body plate (120) using this method, the top plate (110) can maintain the strength of the body plate (120) while minimizing deformation and damage.

[0033] Next, the body plate (120) is formed from a plurality of plates, including a first plate (121), a second plate (122), and a third plate (133) as shown in FIGS. 1 and 2. The first plate (121) is formed in a triangular shape with rounded vertices and is formed to have a certain height. The second plate (122) is formed on the upper side of the first plate (121) and is formed to have a size smaller than that of the first plate (121), and the height of the second plate (122) is formed to be longer than the height of the first plate (121). By having different sizes for the first plate (121) and the second plate (122), the raw material (300) described later can be fitted into the second plate (122). Then, a step portion is formed between the first plate (121) and the second plate (122), and the side of the raw material (300) is fitted into the step portion. By fitting the raw material (300) into the step portion, the raw material (300) and the electromagnetic shielding plate (100) can be combined. By combining in this way, heat and electromagnetic waves generated in the raw material when the raw material (300) is in operation can be removed to the maximum extent.

[0034] Next, the third plate (123) includes an inlet section (123-1), a discharge section (123-2), and a flow path (123-3). First, the third plate (123) is attached to the upper surface of the second plate (122). Since the third plate (123) is formed to fit into the second plate (122), a flow path (123-3) can be formed on the second plate (122). An inlet section (123-1) and a discharge section (123-2) are formed at each end of the flow path (123-3), respectively, to allow refrigerant to be introduced or discharged. Although the inlet section (123-1) and the discharge section (123-2) are shown as being formed on the lower and upper sides, respectively, in FIGS. 1 and 2, the positions where they are formed may vary depending on the direction of refrigerant flow and the shape of the flow path (123-3). These first plate (121), second plate (122) and third plate (123) can be combined using the same method as the top plate (110) was combined with the body plate (120) previously.

[0035] Then, the top plate (110) is coupled to the upper surface of the third plate (123), and the second plate (122), the third plate (123), and the top plate (110) can form a flow path (123-3) through which refrigerant flows.

[0036] As shown in FIG. 2, the formed Euro (123-3) includes a first Euro (123-3a), a second Euro (123-3b), a third Euro (123-3c), a fourth Euro (123-3d), a fifth Euro (123-3e), a sixth Euro (123-3f), and a flow prevention part (123-3g).

[0037] First, as shown in FIG. 2, the first flow path (123-3a) is formed at one end of the previously described inlet section (123-1). At this time, the first flow path (123-3a) proceeds with an inclination toward the center of the second plate (122). Here, the first flow path (123-3a) proceeding toward the center is formed so as to proceed toward the center of the second plate (122) in order to cool the maximum area of ​​the top plate (110). Then, a second flow path (123-3b) including a first bend (123-3ba) is formed at the other end of the first flow path (123-3a). The first bend (123-3ba) is formed so as to bend at the other end of the first flow path (123-3a) such that the interior angle is a right angle. Then, the first curve (123-3ba) forms a second channel (123-3b) in a straight line so as to be spaced apart by a certain length. Next, the third channel (123-3c) includes a second curve (123-3ca) having an 'S' shape at the other end of the second channel (123-3b), and is formed so that one end of the second curve (123-3ca) extends by a certain length parallel to the previously described inlet (123-1). Next, the fourth channel (123-3d) includes a third curve (123-3da) formed in the vertical direction of the third channel (123-3c) and is formed so as to extend upward by a certain length.

[0038] Next, the fifth channel (123-3e) includes a fourth bend (123-3ea) that is vertical from the end of the fourth channel (123-3d) and is formed to one side from one end of the fourth bend (123-3ea). At this time, the fourth bend (123-3ea) is formed so that its central portion is drawn into the center side of the second plate (122). And the sixth channel (123-3f) includes a fifth bend (123-3fa) that is formed in a hairpin shape from the end of the fifth channel (123-3e) and is connected to the discharge portion (123-2) side from the end of the fifth bend (123-3fa). At this time, the length of the flow path formed by the 5th flow path (123-3e) and the 6th flow path (123-3f) is formed to be longer than or equal to the length formed by the 1st flow path (123-3a) to the 4th flow path (123-3d).

[0039] Here, as shown in FIG. 2, the first (123-3a), second (123-3b), third (123-3c) and fourth (123-3d) are formed to have more bends than the portion where the fifth (123-3e) and sixth (123-3e) are formed. This is done to have multiple bends to reduce the flow rate of the refrigerant introduced through the inlet (123-1). That is, by having multiple bends, the flow rate of the refrigerant introduced through the inlet (123-1) is slowed down, and the time the refrigerant stays in the flow path (123-3) increases, thereby allowing the temperature of the top plate (110) to be lowered efficiently. Additionally, as the refrigerant moves through the path (123-3), the temperature of the top plate (110) decreases, and the shielding degree of the electromagnetic wave shield plate (100) increases.

[0040] And a flow blocking section (123-3g) is formed in the first bend (123-3ba), the second bend (123-3ca), and the third bend (123-3da) respectively to reduce the flow rate of the incoming refrigerant. Here, the flow blocking section (123-3g) is formed in the center of the width of the second flow path (123-3b), the third flow path (123-3c), and the fourth flow path (123-3d), and is formed to have the same bend as the first bend (123-3ba), the second bend (123-3ca), and the third bend (123-3da). The reason for forming the flow blocking section (123-3g) in this way is to reduce the flow rate of the refrigerant introduced into the flow path (123-3), thereby increasing the time the refrigerant exists in the corresponding flow path and rapidly lowering the temperature of the top plate (110). For this effect, a flow prevention section (123-3g) is formed only in the bend adjacent to the inlet section (123-1), and is not formed in the bend adjacent to the discharge section (123-2). This is because if the flow speed of the refrigerant inside the flow path (123-3) is slower than the reference speed, it causes the temperature of the top plate (110) to increase rather than decrease.

[0041] And the body plate (120) is formed by combining the first plate (121), the second plate (122), and the third plate (123), and when the shape of the third plate (123) is changed, the shape of the flow path may be formed in a shape other than the shape shown in FIG. 2.

[0042] Hereinafter, an electromagnetic shielding plate (200) according to another embodiment of the present invention will be described using FIGS. 3 and FIGS. 4.

[0043] As shown in FIG. 3, the electromagnetic shielding plate (200) includes a body plate (210) and a flow plate (220). As shown in FIG. 3, the body plate (210) includes an inlet section (211) and an outlet section (212). Here, the inlet section (211) and the outlet section (212) provide the same function as the inlet section (123-1) and the outlet section (123-2) formed in the body plate (120) described above.

[0044] As shown in FIG. 3, the body plate (210) is formed by combining the previously described first plate (121) and second plate (122), and a space exists inside the first plate (121), into which a flow plate (220) is inserted and combined. At this time, a flow path is formed on one side of the flow plate (220). As shown in FIG. 4, this flow path may include a first flow path (221) to a sixth flow path (226) and a flow prevention part (227).

[0045] At this time, as shown in FIG. 4, the second to sixth channels (222) to sixth channels (226) each include the first curve (223-1) to fifth curve (226-2). The first to sixth channels (221) to sixth channels (226) as shown in FIG. 4 have the same shape as the first channels (123-3a) to sixth channels (123-3f) described above through FIG. 2, and the first curve (222-1) to fifth curve (226-2) are also formed with the same shape as the first curve (123-3ba) to fifth curve (123-3fa) as shown in FIG. 2.

[0046] And, as shown in FIG. 4, the first Euro (221) and the sixth Euro (226) are formed such that their sides are indented inwardly so as to be connected to the inlet (211) and the outlet (212), respectively.

[0047] And as shown in FIG. 3, the inlet part (211) and the discharge part (212) are formed to protrude from one side of the body plate (210), respectively.

[0048] Through the flow path (123-3) formed in this way and the flow path formed in the flow plate (220), the temperature of the top plate (110) and the body plate (210) can be rapidly lowered, and as the temperature of each surface is lowered, the temperature of the raw material (300) is also lowered to achieve an optimal electromagnetic shielding temperature, and deformation of the raw material (300) occurring at high temperatures can be minimized. In addition, the flow path (123-3) formed as shown in FIGS. 1 to 4 is formed so as to cool the maximum area. That is, the flow path (123-3) is formed to include a plurality of curves and straight lines as described above in order to cool the maximum area of ​​the top plate (110) and the body plate (210).

[0049] As shown in FIG. 5, the raw material (300) is combined with the shielding plate (100, 200). By combining the raw material (300) with the electromagnetic shielding plate (100, 200) in this way, the raw material (300) can be removed from the electromagnetic shielding plate (100, 200) and combined with a new raw material (300) depending on usage time and wear, and conversely, if the electromagnetic shielding plate (100, 200) is damaged or needs to be replaced, only the electromagnetic shielding plate (100, 200) can be replaced and used.

[0050] And the top plate (110), body plate (120, 210) and flow plate (220) of the electromagnetic shielding plate (100, 200) can be formed from any one of copper, aluminum, nickel, stainless steel or silver to effectively provide electromagnetic shielding, and these metals can effectively shield electromagnetic waves.

[0051] The present invention, as described above with reference to the attached drawings, is susceptible to various modifications and alterations by a person skilled in the art, and such modifications and alterations not limited by the claims should be interpreted as being included within the scope of the rights of the present invention. Explanation of the symbols

[0052] 100, 200: Electromagnetic shielding plate 110: Top Plate 120: Bodyplate 121: First plate 122: Second plate 123: Third Plate 123-1: Inlet 123-2: Discharge section 123-3: Euro 123-3a: 1st Euro 123-3b: 2nd Euro 123-3ba: First bend 123-3c: 3rd Euro 123-3ca: Second bend 123-3d: 4th Euro 123-3da: Third bend 123-3e: 5th Euro 123-3ea: 4th bend 123-3f: 6th Euro 123-3fa: Fifth bend 123-3g: Flow prevention part 210: Bodyplate 211: Inlet 212: Discharge section 220: Flowplate 221: The 1st Euro 222: 2nd Euro 222-1: First bend 223: The 3rd Euro 223-1: Second bend 224: The 4th Euro 224-1: Third bend 225: The 5th Euro 225-1: Fourth bend 226: 6th Euro 226-1: Fifth bend 227: Flow prevention unit

Claims

Claim 1 A body plate (120) having at least one opening and a channel (123-3) connecting the opening on the upper surface; and a top plate (110) having the same shape as the upper surface of the body plate (120) and brazing joined to the upper surface;In an electromagnetic shielding plate comprising, the body plate (120) comprises a lower first plate (121), a second plate (122) formed on the upper side of the first plate (121) with a size smaller than that of the first plate (121), and a third plate (123) formed on the upper side of the second plate (122) and forming the flow path (123-3), wherein the flow path (123-3) connects an inlet part (123-1) and an outlet part (123-2) formed on the third plate (123), a first flow path (123-3a) proceeding from the inlet part (123-1) to the center part of the second plate (122), a second flow path (123-3b) including a first curve (123-3ba) perpendicular to the end of the first flow path (123-3a), and The second euro (123-3b) includes a third euro (123-3c) including an 'S'-shaped second curve (123-3ca), and a fourth euro (123-3d) including a third curve (123-3da) formed vertically to the third euro (123-3c); furthermore, the euro (123-3) includes a fourth curve (123-3ea) vertically at the end of the fourth euro (123-3d), wherein the center of the fourth curve (123-3ea) is formed to be drawn into the center portion of the second plate (122), and a sixth euro (123-3f) including a fifth curve (123-3fa) formed in a hairpin shape at the end of the fifth euro (123-3e), and the An electromagnetic shielding plate characterized in that the end of the sixth euro (123-3f) is connected to the discharge portion (123-2), and a flow prevention portion (123-3g) is formed at the center of the width of the second euro (123-3b), third euro (123-3c), and fourth euro (123-3d) corresponding to the first bend (123-3ba), second bend (123-3ca), and third bend (123-3da). Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 delete Claim 9 A body plate (210) including at least one opening; In an electromagnetic shielding plate comprising: a flow plate (220) which is coupled to the rear surface of the body plate (210) and includes a flow path, wherein the body plate (210) has a space formed inside and the flow plate (220) is inserted into and coupled to the space, the flow plate (220) includes an inlet section (211) and an outlet section (212), and the flow path connects the inlet section (211) and the outlet section (212), and there is a first flow path (221) proceeding from the inlet section (211) to the center of the flow plate (220), a second flow path (222) including a first curve (222-1) vertically at the end of the first flow path (221), a third flow path (223) including a second curve (223-1) in the shape of an 'S' in the second flow path (222), and the third flow path (223) The electromagnetic shielding plate is characterized by including a fourth channel (224) including a third curve (224-1) formed in a vertical direction, and further, the channel includes a fourth curve (225-1) that is vertical at the end of the fourth channel (224), wherein the center of the fourth curve (225-1) is formed to be drawn into the center of the flow plate (220), and a sixth channel (226) including a fifth curve (226-1) formed in a hairpin shape at the end of the fifth channel (225), wherein the end of the sixth channel (226) is connected to the discharge part (212), and a flow prevention part (227) is formed at the center of the width of the curved parts of the second channel (222), the third channel (223), and the fourth channel (224). Claim 10 delete Claim 11 delete Claim 12 delete Claim 13 delete

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