Method for manufacturing contact tip, and electrically conductive pin including contact tip

Abstract

Provided are a method for manufacturing a contact tip, and an electrically conductive pin including contact tips and tip parts of various shapes, the method comprising: a preparation step for preparing a contact member to be machined in order to form a contact tip and a tip part in various shapes for inspecting the electrical characteristics of an object under inspection; a tip part formation step for forming a tip part by cutting one surface in the lengthwise direction of the contact member; a flat part formation step for forming a flat surface, to which the tip part is connected, by cutting the one surface; and a contact tip formation step for forming the exterior of a contact tip by machining the side surface of the contact member.

Description

Method for manufacturing a contact tip and an electrically conductive pin including a contact tip

[0001] The present invention relates to a method for manufacturing a contact tip and an electrically conductive pin including a contact tip, and more specifically, to a method for manufacturing a contact tip through cutting processing and an electrically conductive pin including a contact tip manufactured through cutting processing.

[0002] Electrically conductive pins refer to pins that can be used in testing devices such as probe cards and test sockets that come into contact with the test object and test the test object.

[0003] Inspection of semiconductor devices is performed by contacting a test socket or probe card having a number of electrically conductive pins on an inspection object such as a semiconductor package or semiconductor wafer to provide an electrical signal.

[0004] Here, the electrically conductive pin plays a role in transmitting an electrical signal between the object to be inspected and the inspection device, and the contact tip is located at the end of the electrically conductive pin and directly contacts the inspection device to transmit an electrical signal.

[0005] In this regard, prior art document No. 10-2023-0119383 discloses 'Pogo pin and its manufacturing method'. The prior art document describes forming a contact tip by forming a groove in a shape corresponding to a contact tip on one surface of a sacrificial substrate and then filling the groove with a metal layer through plating.

[0006] Thus, contact tips manufactured using the MEMS process have limited geometries. When etching a substrate with an etchant, the grooves are structured with a specific slope, depth, and shape, depending on the crystal orientation of the substrate.

[0007] That is, since the home part with a limited structure cannot help but form a contact tip with a limited structure (e.g., a square pyramid and a square pyramidal frustum structure), a problem arises in that it cannot respond to various environments.

[0008] [Prior Art Literature]

[0009] [Patent Document]

[0010] (Patent Document 1) Patent Publication No. 10-2023-0119383

[0011] In order to solve the above-described problem, the present invention aims to provide a method for manufacturing a contact tip capable of forming various shapes of the contact tip and the tip end.

[0012] In addition, the present invention aims to provide an electrically conductive pin including a contact tip and a tip end of various shapes.

[0013] In order to achieve the above-described object, a method for manufacturing a contact tip according to an embodiment of the present invention may include a preparation step of preparing a contact member to be processed, a tip forming step of cutting and processing one longitudinal surface of the contact member to form a tip portion, a flat surface forming step of cutting and processing the one surface to form a flat surface to which the tip portion is connected, and a contact tip forming step of forming an outer surface of the contact tip by processing a side surface of the contact member.

[0014] Additionally, in the step of forming the tip portion according to an embodiment of the present invention, a mirror finish may be performed on the surface forming the tip portion.

[0015] Additionally, in the step of forming the tip according to an embodiment of the present invention, the tip may be formed in a pyramidal or cone shape.

[0016] In addition, in the step of forming the tip portion according to an embodiment of the present invention, the tip portion may be formed in multiple numbers, each tip portion having a pyramidal shape, and each tip portion may be formed such that at least one vertex is in contact with the edge of the flat portion.

[0017] Additionally, in the step of forming the tip portion according to an embodiment of the present invention, the tip portion may be formed as a plurality of tip portions spaced apart from each other.

[0018] Additionally, in an embodiment of the present invention, the contact tip forming step may process a side surface of the flat portion to bring the edge of the flat surface into contact with the contact tip.

[0019] Additionally, in an embodiment of the present invention, the contact tip forming step may remove a portion of the contact tip on the flat surface by processing the side surface of the flat portion.

[0020] In addition, the method for manufacturing a contact tip according to an embodiment of the present invention may further include a plating layer forming step of forming a plating layer on the contact tip.

[0021] Meanwhile, an electrically conductive pin according to an embodiment of the present invention may include a contact tip manufactured by the contact tip manufacturing method; a barrel portion having one side connected to the contact tip; an elastic portion positioned in a hollow portion of the barrel portion and having one side supported by the contact tip; and a movable tip that moves in the longitudinal direction according to compression and extension of the elastic portion.

[0022] Additionally, in an embodiment of the present invention, the contact tip may include a single tip having a triangular pyramidal shape.

[0023] Additionally, in an embodiment of the present invention, the contact tip includes a plurality of pointed ends in a quadrangular pyramid shape and a flat surface on which the plurality of pointed ends are formed, and an edge of the flat surface can be brought into contact with the plurality of pointed ends.

[0024] Additionally, in an embodiment of the present invention, the contact tip may include a tip portion having a square pyramid shape with one vertex area removed and a flat surface on which the tip portion is formed.

[0025] The present invention can provide contact tips of various shapes by manufacturing contact tips through processing and adjusting the height of the tip, the inclination of the tip, the spacing between the tip, etc.

[0026] The present invention can provide various electrically conductive pins by forming contact tips of various shapes through processing.

[0027] FIG. 1 is a cross-sectional view of an electrically conductive pin including a contact tip according to an embodiment of the present invention.

[0028] FIG. 2 is a drawing showing a flow chart of a method for manufacturing a contact tip according to an embodiment of the present invention.

[0029] FIG. 3a is a drawing showing a contact tip including one square pyramidal tip in an embodiment of the present invention.

[0030] FIG. 3b is a drawing showing a contact tip including one triangular pyramidal tip in an embodiment of the present invention.

[0031] FIG. 3c is a drawing showing a contact tip including one conical tip in an embodiment of the present invention.

[0032] FIG. 4a is a drawing showing a plurality of tip portions formed in a non-contact state with the edge of a flat surface in an embodiment of the present invention.

[0033] FIG. 4b is a drawing showing a plurality of tip portions formed in contact with the edge of a flat surface in an embodiment of the present invention.

[0034] FIG. 4c is a drawing showing a plurality of tip portions formed with some areas of the tip portions removed in an embodiment of the present invention.

[0035] FIG. 5 is a drawing showing a plated contact tip in an embodiment of the present invention.

[0036] Those skilled in the art will be able to develop various devices that embody the principles of the invention and fall within the scope and spirit of the invention, even if not explicitly described or illustrated in this specification. Furthermore, all conditional terms and embodiments listed herein are expressly intended, in principle, to facilitate understanding of the invention's concept and should be understood as being in no way limiting to the specifically listed embodiments and conditions.

[0037] The above-described objects, features and advantages will become more apparent through the following detailed description of the invention in conjunction with the accompanying drawings, so that those skilled in the art will be able to easily implement the technical idea of ​​the invention.

[0038] The embodiments described herein will be described with reference to cross-sectional and / or perspective views, which are ideal illustrations of the present invention. The dimensions of components depicted in these drawings may be exaggerated for the purpose of effectively explaining the technical content. The form of the illustrations may be altered due to manufacturing techniques and / or tolerances.

[0039] When describing various embodiments, components that perform the same function will be given the same names and reference numbers for convenience even if the embodiments are different. In addition, the expression "at least one of A, B, and C" means that it is composed of one, two, or three of A, B, and C. In addition, a cross-section or cross-sectional area may mean a cross-section perpendicular to the longitudinal direction unless otherwise specified. In addition, the longitudinal direction may mean the direction of extension and compression of the elastic member (400). Furthermore, for convenience, the configuration and operation already described in other embodiments will be omitted.

[0040] First, the structure of an electrically conductive pin (10) including a contact tip (100) according to an embodiment of the present invention will be examined.

[0041] FIG. 1 is a cross-sectional view of an electrically conductive pin (10) including a contact tip (100) according to an embodiment of the present invention.

[0042] Referring to FIG. 1, an electrically conductive pin (10) according to an embodiment of the present invention may include a contact tip (100); a barrel portion (200) having one side connected to the contact tip (100); an elastic portion (400) positioned in a hollow portion (201) of the barrel portion (200) and having one side supported by the contact tip (100); and a moving tip (300) that moves in the longitudinal direction according to compression and extension of the elastic portion (400).

[0043] The contact tip (100) can contact a test object (not shown) and exchange electrical signals with the test object. The contact tip (100) can be fixed to the barrel portion (200) by having a portion positioned in the hollow portion (201) of the barrel portion (200).

[0044] The contact tip (100) may include a tip portion (110), a flat portion (120) having a flat surface (125) that contacts the bottom surface of the tip portion (110), and a main body portion (130) that extends lengthwise from the flat portion (120) and is positioned in a hollow (201).

[0045] The contact tip (100) can be manufactured by the contact tip manufacturing method described below.

[0046] At least one tip (110) may be provided. The tip (110) may be provided so as to protrude from a flat surface (125) forming one side of the flat portion (120). The tip (110) may be provided so that the cross-sectional area thereof narrows in the longitudinal direction. However, the shape of the tip (110) is not limited to that described above.

[0047] The tip portion (110) may be provided in one shape among a cylinder, a cylindrical shape, a pyramid, a cone, a truncated pyramid, and a truncated cone. The plurality of tip portions (110) may each be provided in one shape among a cylinder, a cylindrical shape, a pyramid, a cone, a truncated pyramid, and a truncated cone. However, the shape of the tip portion (110) is not limited to the above-described shape. The plurality of tip portions (110) may be provided on a flat surface (125) while being independently spaced apart from each other.

[0048] The contact tip (100) may include a single tip (110) having a triangular pyramid shape, a polygonal pyramid shape, or a cone shape. The contact tip (100) may include a plurality of tip portions (110) having a square pyramid shape, a polygonal pyramid shape, or a cone shape.

[0049] The contact tip (100) may include a flat portion (120) having a flat surface (125) on which a single or multiple tips (110) are formed. The edge of the flat surface (125) may come into contact with the multiple tips (110).

[0050] The contact tip (100) may include a tip (110) having a square pyramid shape or a polygonal pyramid shape with one vertex area removed (see FIG. 4c). The removal surface of the tip (110) with one vertex area removed may be formed to extend from the flat portion (120) while having the same curvature as the side surface of the flat portion (120).

[0051] The main body (130) may have a cross-sectional area smaller than that of the flat portion (120). The main body (130) may have the same central axis as the flat portion (120). The main body (130) may include a first main body (131), a second main body (132), a third main body (133), and a fourth main body (134).

[0052] The first main body (131) may extend longitudinally from the flat portion (120). The first main body (131) may have a cross-sectional area smaller than the cross-sectional area of ​​the flat portion (120).

[0053] The second main body part (132) may extend longitudinally from the first main body part (131). The second main body part (132) may have a cross-sectional area smaller than that of the first main body part (131).

[0054] The third main body part (133) may extend longitudinally from the second main body part (132). The third main body part (133) may have a cross-sectional area larger than that of the second main body part (132). The third main body part (133) may have a cross-sectional area equal to that of the first main body part (131).

[0055] The fourth main body part (134) may extend longitudinally from the third main body part (133). The cross-sectional area of ​​the fourth main body part (134) may gradually decrease in the longitudinal direction. The fourth main body part (134) may support the elastic part (400) in the longitudinal direction.

[0056] The first main body part (131) and the second main body part (132) can form a first step (135) due to the difference in cross-sectional area. The second main body part (132) and the third main body part (133) can form a second step (136) due to the difference in cross-sectional area. The first separation prevention part (210) of the barrel part (200) is located between the first step (135) and the second step (136) to prevent separation of the barrel part (200) and the contact tip (100).

[0057] The moving tip (300) can contact an inspection device (not shown) or an electric circuit (not shown) to exchange electric signals with the inspection device or the electric circuit.

[0058] The moving tip (300) may include a moving tip portion (310) and a moving main body portion (320).

[0059] The movable tip (310) may be provided to extend from the movable main body (320). The movable tip (310) may be provided so that the cross-sectional area thereof becomes narrower in the longitudinal direction. However, the shape of the movable tip (310) is not limited to that described above.

[0060] The moving body part (320) may include a first moving body part (321), a second moving body part (322), a third moving body part (323), and a fourth moving body part (324).

[0061] The first movable body part (321) can extend longitudinally from the movable tip part (310). Depending on the compression and extension of the elastic part (400), a portion of the first movable body part (321) can move longitudinally along the hollow part (201) and the remainder can move longitudinally outside the hollow part (201).

[0062] The second moving body part (322) can extend in the longitudinal direction from the first moving body part (321). The cross-sectional area of ​​the second moving body part (322) can gradually increase in the longitudinal direction.

[0063] The second moving body part (322) can be positioned in the hollow (201) and can move longitudinally along the hollow (201) according to the compression and expansion of the elastic part (400). The outer surface of the second moving body part (322) can contact the inner surface of the second separation prevention part (220) of the barrel part (200), thereby preventing the separation of the moving tip (300) from the barrel part (200).

[0064] The third moving body part (323) may extend longitudinally from the second moving body part (322). The third moving body part (323) may have a larger cross-sectional area than the first moving body part (321).

[0065] The fourth movable body part (324) may extend longitudinally from the third movable body part (323). The cross-sectional area of ​​the fourth movable body part (324) may gradually decrease in the longitudinal direction. The fourth movable body part (324) may support the elastic part (400) in the longitudinal direction.

[0066] The barrel portion (200) may have a hollow portion (201) and may accommodate an elastic portion (400) through the hollow portion (201). The barrel portion (200) may accommodate a portion of the contact tip (100) in the hollow portion (201) to fix the contact tip (100). The barrel portion (200) may accommodate a portion of the moving tip (300) in the hollow portion (201) to provide a space for the moving tip (300) to move in the longitudinal direction.

[0067] The barrel portion (200) may include a first anti-separation portion (210) and a second anti-separation portion (220). The first anti-separation portion (210) may be formed by being recessed in the direction of the central axis from the side of the barrel portion (200) between both ends of the barrel portion (200). The second anti-separation portion (220) may be formed by being bent in the direction of the central axis from one end of the barrel portion (200).

[0068] The first detachment prevention part (210) can prevent detachment of the contact tip (100) from the barrel part (200) by narrowing the cross-sectional area of ​​the hollow part (201). The second detachment prevention part (220) can prevent detachment of the moving tip (300) from the barrel part (200) by narrowing the cross-sectional area of ​​the hollow part (201).

[0069] The barrel portion (200) may include a fixing portion (230). The fixing portion (230) may be formed to protrude radially from the outer surface of the barrel portion (200) between both ends of the barrel portion (200). The fixing portion (230) may be formed along the circumferential direction from the barrel portion (200) and may have a larger outer diameter than other areas of the barrel portion (200). The fixing portion (230) may fix the electrically conductive pin (10) or the barrel portion (200) within the inspection device.

[0070] The elastic member (400) may be positioned in the hollow portion (201) of the barrel portion (200). The elastic member (400) may include a spring. The elastic member (400) may be compressed when the contact tip (100) comes into contact with the inspection object and receives pressure. The elastic member (400) may be stretched (restored) again when the contact tip (100) and the inspection object are released.

[0071] The elastic member (400) may be supported longitudinally at one end by the contact tip (100) and / or the fourth main body part (134). The elastic member (400) may be supported longitudinally at the other end by the moving tip (300) and / or the fourth moving main body part (324).

[0072] An electrically conductive pin (10) according to an embodiment of the present invention may include a contact tip (100), a moving tip (300), a barrel portion (200), and an elastic portion (400). The contact tip (100) and the barrel portion (200) may be combined as independent components to form an electrically conductive pin (10).

[0073] The electrically conductive pin (10) may be manufactured as a single component, with the contact tip (100) and the barrel portion (200) integrally formed to form the electrically conductive pin (10). In this case, the contact tip (100) may be formed to extend integrally from one end of the barrel portion (200), including only the tip portion (110), the flat surface (125), and the flat portion (120).

[0074] According to an embodiment of the present invention, the electrically conductive pin (10) can have an elastic part (400) that can be compressed when the contact tip (100) comes into contact with the inspection object and receives longitudinal pressure, and the moving tip (300) can move in the longitudinal direction according to the compression of the elastic part (400).

[0075] According to an embodiment of the present invention, the electrically conductive pin (10) can have an elastic part (400) that can be extended when the contact tip (100) and the inspection object are released from contact, and the moving tip (300) can be moved in the longitudinal direction according to the extension of the elastic part (400).

[0076] Next, a method for manufacturing a contact tip according to another embodiment of the present invention will be examined.

[0077] FIG. 2 is a drawing showing a flow chart of a method for manufacturing a contact tip according to an embodiment of the present invention.

[0078] Referring to FIG. 2, a method for manufacturing a contact tip according to an embodiment of the present invention may include a preparation step (S100) of preparing a contact member to be processed, a tip forming step (S200) of forming a tip (110) by cutting and processing one longitudinal surface of the contact member, a flat surface forming step (S300) of forming a flat surface (125) to which the tip (110) is connected by cutting and processing one longitudinal surface of the contact member, and a contact tip forming step (S400) of forming the exterior of the contact tip (100) by processing a side surface of the contact member.

[0079] First, a preparatory step (S100) for preparing a contact member to be processed can be performed.

[0080] The contact member may refer to a state before the contact tip (100) is processed. When the contact tip (100) and the barrel portion (200) are formed integrally, the contact member may refer to a state before the contact tip (100) and the barrel portion (200) are processed.

[0081] The contact member may be formed in the form of a cylinder or a prism, but is not limited thereto. The contact member may be machined using a cutting tool such as a lathe, milling machine, machining center, drilling machine, or grinding machine. The contact member may include a hollow portion formed by drilling at least in a portion of its length.

[0082] Next, a cutting-point forming step (S200) of forming a cutting-point (110) by cutting one side of the longitudinal direction of the contact member and a flat-point forming step (S300) of forming a flat surface (125) to which the cutting-point (110) is connected by cutting one side of the longitudinal direction of the contact member can be performed.

[0083] When the contact member is in the shape of a column, the contact member may have at least one side surface and two bottom surfaces. Here, one of the bottom surfaces may be expressed as a longitudinal surface as described below.

[0084] A longitudinal side of a contact member may be cut to form a cutting edge (110). The cutting means may move relative to the contact member and cut the contact member to form the cutting edge (110).

[0085] The tip (110) may be formed in at least one shape among a triangular pyramid, a square pyramid, a cone, a triangular pyramid, a square pyramid, a truncated cone, a triangular prism, a square prism, and a cylinder. However, the shape of the tip (110) is not limited to those described above.

[0086] Since the tip (110) is formed by cutting processing, the tip (110) can be formed into various shapes without limitation in terms of number, shape of the bottom surface, edge length of the bottom surface, radius of the bottom surface, shape of the side surface, edge length of the side surface, etc. Mirror processing can be performed on the surface forming the tip (110).

[0087] A flat surface (120) can be formed by cutting one longitudinal side of the contact member. The cutting means can cut the contact member while moving relative to the contact member to form the flat surface (120).

[0088] The flat portion (120) may have a flat surface (125) on one side to support the tip portion (110). That is, the contact tip (100) may have a flat shape on one side, excluding the tip portion (110). The flat portion (120) may be formed to extend in the longitudinal direction from the main body portion (130).

[0089] The flat portion (120) can contact the end of the barrel portion (200) from the other side, and in the contact state, the first detachment prevention portion (210) is located between the first step (135) and the second step (136), so that the contact tip (100) can be combined with the barrel portion (200).

[0090] The cutting edge forming step (S200) and the flat surface forming step (S300) can be performed simultaneously. The cutting means can form the cutting edge (110) by cutting a portion of the contact member and at the same time form the flat surface (120) by cutting another portion of the contact member.

[0091] As a comparative example, according to the MEMS method of manufacturing a contact tip, since the shape of the groove where the substrate is etched is limited, the contact tip (100) formed by plating the groove also cannot but have a limited shape.

[0092] Since the method for manufacturing a contact tip according to an embodiment of the present invention manufactures the contact tip (100) through cutting processing, the shape of the tip (110) can be implemented more freely.

[0093] Next, a contact tip forming step (S400) of forming the exterior of the contact tip (100) by processing the side surface of the contact member can be performed.

[0094] The side surface of the contact member may be cut to form the outer appearance of the contact tip (100). The contact member may be machined by the cutting means moving along the periphery of the contact member, or the contact member may be machined by the cutting means while rotating.

[0095] The contact member may be processed into a flat portion (120) and a main body portion (130) by cutting off the side surface. Specifically, the contact member may be processed into a flat portion (120), a first main body portion (131), a second main body portion (132), a third main body portion (133), and a fourth main body portion (134) by cutting off the side surface.

[0096] The flat portion (120) may have an outer diameter of a cross-section that is the same as the outer diameter of the barrel portion (200). The main body portion (130) may have an outer diameter of a cross-section that is smaller than or equal to the inner diameter of the barrel portion (200). The first main body portion (131) may have an outer diameter of a cross-section that is smaller than that of the flat portion (120). The second main body portion (132) may have an outer diameter of a cross-section that is smaller than that of the first main body portion (131). The third main body portion (133) may have an outer diameter of a cross-section that is larger than that of the second main body portion (132). The fourth main body portion (134) may have an outer diameter of a cross-section that becomes smaller in the longitudinal direction from the third main body portion (133).

[0097] The first main body part (131) and the third main body part (133) may have the same outer diameter of the cross section, and may be the same as or smaller than the inner diameter of the barrel part (200). The inner diameter of the first detachment prevention part (210) may be smaller than the outer diameters of the first main body part (131) and the third main body part (133), and larger than the outer diameter of the second main body part (132).

[0098] As described above, the cutting means can cut the side surface of the contact member to process the flat portion (120) and the main body portion (130).

[0099] The contact member can adjust the radius of the flat surface by cutting the side surface. Depending on the degree to which the side surface of the contact member is cut, the outer diameter of the flat portion (120) and the radius of the flat surface (125) can be reduced. As the degree to which the side surface of the contact member is cut increases, the edge of the flat surface (125) can come closer to the tip portion (110).

[0100] When the side surface of the contact member is cut in the direction of the central axis to the starting position of the tip (110), the tip (110) can contact the edge of the flat surface (125). At this time, when looking at the contact tip (100) in the longitudinal direction, the shape of the tip (110) in a complete shape contacting the edge of the flat surface (125) of the flat portion (120) can be seen.

[0101] When the side surface of the contact member is cut to the inner position of the tip (110) in the direction of the central axis, the tip (110) may be partially removed and may contact the edge of the flat surface (125). At this time, when looking at the contact tip (100) in the longitudinal direction, the tip (110) may appear as a shape in which a portion of the flat surface (125) of the flat portion (120) is contacted. That is, the tip (110) does not protrude radially from the flat surface (125) of the flat portion (120), and when looking at the contact tip (100) in the longitudinal direction, the shape of the contact tip (100) may be circular.

[0102] The contact tip forming step (S400) may include a flat part side forming step of forming a side surface of a flat part (120) by processing a side surface of a contact member, and a main body side forming step of forming a side surface of a main body (130) by processing a side surface of a contact member.

[0103] In the step of forming the side surface of the flat portion, the side surface of the flat portion (120) of the contact member can be cut to narrow the area of ​​the flat surface (125), and in this process, the edge of the flat portion (120) can come into contact with the already formed tip portion (110).

[0104] In the step of forming the side surface of the flat portion, the side surface of the flat portion (120) of the contact member can be further cut to narrow the surface area of ​​the flat surface (125), and in this process, a part of the flat portion (120) can be removed together with a part of the already formed tip portion (110).

[0105] In the main body side surface forming step, the side surface of the main body (130) of the contact member can be cut so that each region (first main body (131) to fourth main body (134)) of the main body (130) can be formed to have the cross-sectional area or outer diameter described above.

[0106] Next, the shape of the contact tip (100) manufactured by the contact tip manufacturing method according to the embodiment of the present invention will be examined.

[0107] Description of the same content as described above with respect to the contact tip (100) is omitted, and the different configuration is described.

[0108] FIG. 3A is a drawing showing a contact tip (100) including a single square pyramidal tip (110) according to an embodiment of the present invention. FIG. 3B is a drawing showing a contact tip (100) including a single triangular pyramidal tip (110) according to an embodiment of the present invention. FIG. 3C is a drawing showing a contact tip (100) including a single conical tip (110) according to an embodiment of the present invention. FIG. 4A is a drawing showing a plurality of tip portions (110) formed in a non-contact state with an edge of a flat surface (125) according to an embodiment of the present invention. FIG. 4B is a drawing showing a plurality of tip portions (110) formed in a contact state with an edge of a flat surface (125) according to an embodiment of the present invention. FIG. 4C is a drawing showing a plurality of tip portions (110) formed in a state in which a part of the tip portions (110) are removed according to an embodiment of the present invention.

[0109] The first line (L1) refers to the edge of the flat portion (120) or the edge of the flat surface (125), and the second line (L2) refers to a virtual edge having the same shape as the first line (L1), but connecting the outermost points of at least one tip portion (110) (if a part of the tip portion (110) is removed, the complete shape before removal is used as the standard).

[0110] Referring to FIG. 3a, a single tip (110) may be formed on a flat portion (120). At this time, the tip (110) may have a quadrangular pyramid shape. The contact tip (100) according to an embodiment of the present invention may include a tip (110), a flat portion (120), and a main body (130).

[0111] In the cutting edge forming step (S200) and the flat part forming step (S300), the contact member can be cut and processed into a single cutting edge (110) in the shape of a square pyramid, and can be processed into a flat part (120) including a flat surface (125) that supports the single cutting edge (110).

[0112] In the contact tip forming step (S400), the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the flat portion (120). Furthermore, the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the main body portion (130).

[0113] As shown in Fig. 3a, the first line (L1) may be located on the outside of the second line (L2). Alternatively, the first line (L1) may be located on the same side as the second line (L2) (see Fig. 4b), or the first line (L1) may be located on the inside of the second line (L2) (see Fig. 4c).

[0114] The flat portion (120) may include a first portion (121) and a second portion (122). The first portion (121) may be a region extending longitudinally from the main body portion (130). The second portion (122) may be a region extending longitudinally from the first portion (121). The second portion (122) may be formed to have a smaller cross-sectional area or outer diameter than the first portion (121). The second portion (122) may include a flat surface (125) supporting the tip portion (110).

[0115] In the contact tip forming step (S400), the side surface of the contact member may be processed to form a second portion (122). The flat portion (120) is not necessarily formed as a first portion (121) and a second portion (122) having different cross-sectional areas or outer diameters. Alternatively, the flat portion (120) may be formed as a single shape having the same cross-sectional area or outer diameter.

[0116] Referring to Fig. 3b, a single tip (110) can be formed on a flat portion (120). At this time, the tip (110) can have a triangular pyramid shape.

[0117] In the tip forming step (S200) and the flat part forming step (S300), the contact member can be cut and processed into a single tip (110) in the shape of a triangular pyramid, and can be processed into a flat part (120) including a flat surface (125) that supports the single tip (110).

[0118] In the contact tip forming step (S400), the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the flat portion (120). Furthermore, the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the main body portion (130).

[0119] As shown in Fig. 3b, the first line (L1) may be located on the outside of the second line (L2). Alternatively, the first line (L1) may be located on the same side as the second line (L2) (see Fig. 4b), or the first line (L1) may be located on the inside of the second line (L2) (see Fig. 4c).

[0120] As described above, the flat portion (120) includes a first portion (121) and a second portion (122) having different cross-sectional areas or outer diameters. Furthermore, as described above, the flat portion (120) can be formed into a single shape having the same cross-sectional area or outer diameter.

[0121] Referring to Fig. 3c, a single tip (110) can be formed on a flat portion (120). At this time, the tip (110) can have a cone shape.

[0122] In the cutting edge forming step (S200) and the flat part forming step (S300), the contact member can be cut and processed into a single cutting edge (110) having a cone shape, and can be processed into a flat part (120) including a flat surface (125) that supports the single cutting edge (110).

[0123] In the contact tip forming step, the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the flat portion (120). Furthermore, the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the main body portion (130).

[0124] As shown in Fig. 3c, the first line (L1) may be located on the outside of the second line (L2). Alternatively, the first line (L1) may be located at the same location as the second line (L2) (see Fig. 4b), or the first line (L1) may be located on the inside of the second line (L2) (see Fig. 4c).

[0125] As described above, the flat portion (120) includes a first portion (121) and a second portion (122) having different cross-sectional areas or outer diameters. Furthermore, as described above, the flat portion (120) can be formed into a single shape having the same cross-sectional area or outer diameter.

[0126] Referring to Fig. 4a, a plurality of tip portions (110) may be formed on a flat portion (120). At this time, the tip portions (110) may have a square pyramid shape. However, the shape of the tip portions (110) is not limited to the shape described above.

[0127] A contact tip (100) according to an embodiment of the present invention may include a plurality of tip portions (110), a flat portion (120), and a main body portion (130), and the plurality of tip portions (110) may be spaced apart from the edge of the flat surface (125) in the direction of the central axis.

[0128] In the cutting edge forming step (S200) and the flat part forming step (S300), the contact member can be cut and processed into a plurality of cutting edges (110) in a quadrangular pyramid shape, and can be processed into a flat part (120) including a flat surface (125) that supports the plurality of cutting edges (110).

[0129] In the contact tip forming step (S400), the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the flat portion (120). Furthermore, the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the main body portion (130).

[0130] The edge of the flat surface (125) of the flat portion (120) may be spaced apart from the plurality of cutting edges (110). That is, an empty space may be formed between the edge of the flat surface (125) and the closest point among the plurality of cutting edges (110).

[0131] As shown in Fig. 4a, the first line (L1) may be located on the outside of the second line (L2). Alternatively, the first line (L1) may be located on the same side as the second line (L2) (see Fig. 4b), or the first line (L1) may be located on the inside of the second line (L2) (see Fig. 4c).

[0132] As described above, the flat portion (120) includes a first portion (121) and a second portion (122) having different cross-sectional areas or outer diameters. Furthermore, as described above, the flat portion (120) can be formed into a single shape having the same cross-sectional area or outer diameter.

[0133] Referring to Fig. 4b, a plurality of tip portions (110) may be formed on a flat portion (120). At this time, the tip portions (110) may have a square pyramid shape. However, the shape of the tip portions (110) is not limited to the shape described above.

[0134] A contact tip (100) according to an embodiment of the present invention may include a plurality of tip portions (110), a flat portion (120), and a main body portion (130), and the plurality of tip portions (110) may be in contact with the edge of the flat surface (125).

[0135] In the contact tip forming step (S400), the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the flat portion (120). Furthermore, the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the main body portion (130).

[0136] The edge of the flat surface (125) of the flat portion (120) can be in contact with the plurality of cutting edges (110). That is, the edge of the flat surface (125) and the closest point among the plurality of cutting edges (110) can be in contact.

[0137] As shown in Fig. 4b, the first line (L1) may be positioned identically to the second line (L2). Alternatively, the first line (L1) may be positioned on the outside of the second line (L2) (see Fig. 4a), or the first line (L1) may be positioned on the inside of the second line (L2) (see Fig. 4c).

[0138] As described above, the flat portion (120) includes a first portion (121) and a second portion (122) having different cross-sectional areas or outer diameters. Furthermore, as described above, the flat portion (120) can be formed into a single shape having the same cross-sectional area or outer diameter.

[0139] Referring to Fig. 4c, a plurality of tip portions (110) may be formed on a flat portion (120). At this time, the tip portions (110) may have a shape in which a portion of the original shape, which is a square pyramid shape, is removed. However, the original shape before the portion is removed is not limited to a square pyramid. The original shape may be at least one of a square pyramid, a triangular pyramid, and a cone, but is not limited thereto.

[0140] A contact tip (100) according to an embodiment of the present invention may include a plurality of tip portions (110), a flat portion (120), and a main body portion (130), and each of the plurality of tip portions (110) may have a shape in which a portion of the area is removed. Some of the areas may be areas including one vertex.

[0141] In the tip forming step (S200) and the flat part forming step (S300), the contact member can be cut and processed into a plurality of pointed parts in a square pyramid shape, and can be processed into a flat part (120) including a flat surface (125) that supports a plurality of tip parts (110).

[0142] In the contact tip forming step (S400), the side surface of the contact member may be processed to determine the cross-sectional area or outer diameter of the flat portion (120). The side surface of the contact member may be processed up to the area of ​​the tip portion (110), so that a portion of the tip portion (110) may be removed. Specifically, the portion of the tip portion (110) may be an area including one of the plurality of vertices forming the bottom surface of the tip portion (110).

[0143] Furthermore, the side surface of the contact member can be processed to determine the cross-sectional area or outer diameter of the main body (130).

[0144] As shown in Fig. 4c, the first line (L1) may be located on the inner side of the second line (L2). Alternatively, the first line (L1) may be located on the outer side of the second line (L2) (see Fig. 4a), or the first line (L1) may be located identically to the second line (L2) (see Fig. 4b).

[0145] The flat portion (120) may be formed as a single shape having the same cross-sectional area or outer diameter. Furthermore, as described above, the flat portion (120) may be formed as a first portion (121) and a second portion (122) having different cross-sectional areas or outer diameters.

[0146] FIG. 5 is a drawing showing a plated contact tip (100) in an embodiment of the present invention.

[0147] Referring to FIG. 5, the method for manufacturing a contact tip according to an embodiment of the present invention may further include a plating layer forming step (S500) of forming a plating layer (500) on the contact tip (100).

[0148] A contact tip (100) including a tip (110), a flat portion (120), and a main body (130) is formed through a tip forming step (S200), a flat portion forming step (S300), and a contact tip forming step (S400), and a plating layer (500) is formed on the formed contact tip (100) to improve the electrical conductivity of the contact tip (100).

[0149] The plating layer (500) may include Au. The contact member may include at least one of NiB, NiP, and BeCu, but is not limited thereto.

[0150] Since the method for manufacturing a contact tip according to an embodiment of the present invention forms a contact tip (100) and a tip (110) by cutting a contact member before processing, contact tips (100) and tip (110) of various shapes can be formed without limitation.

[0151] The method for manufacturing a contact tip according to an embodiment of the present invention can freely set the relative positions of the first line (L1) and the second line (L2) by cutting the side surface of the contact member.

[0152] The method for manufacturing a contact tip according to an embodiment of the present invention can provide a contact tip (100) having various shapes by manufacturing the number of tips (110), the length of the edges constituting the tips (110), the angle of the side surfaces, etc. in various ways.

[0153] The method for manufacturing a contact tip according to an embodiment of the present invention can provide a contact tip (100) more quickly by omitting the PR application process, exposure process, and plating process that are repeated in the MEMS process.

[0154] The electrically conductive pin (10) including the contact tip (100) according to the embodiment of the present invention can easily respond to the request of the user and provide the electrically conductive pin (10) of various shapes because the contact tip (100) is manufactured by cutting.

[0155] As described above, the present invention has been described with reference to preferred embodiments thereof, but it will be apparent to those skilled in the art that various modifications or variations may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the following claims.

[0156] [Explanation of symbols]

[0157] 10: Electrically conductive pin

[0158] 100: Contact tip

[0159] 110: Cutting edge

[0160] 120: Flat area

[0161] 121: Part 1

[0162] 122: Part 2

[0163] 125: Flat surface

[0164] 130: Main body

[0165] 131: First Main Body

[0166] 132: Second Main Body

[0167] 133: Third Main Body

[0168] 134: 4th Main Body Department

[0169] 135: First step

[0170] 136: Second step

[0171] 200: Barrel

[0172] 201: Hollow

[0173] 210: First Departure Prevention Unit

[0174] 220: Second Departure Prevention Unit

[0175] 230: Fixed part

[0176] 300: Moving Tips

[0177] 310: Mobile tip section

[0178] 320: Mobile body

[0179] 400: Elasticity

[0180] 500: plating layer

Claims

1. A method for manufacturing a contact tip used as an electrically conductive pin for testing the electrical characteristics of a test object, A preparatory step for preparing a contact member to be processed; A cutting edge forming step of forming a cutting edge by cutting one side of the longitudinal direction of the above contact member; A flat part forming step of cutting the above surface to form a flat surface to which the cutting edge is connected; and A method for manufacturing a contact tip, comprising: a contact tip forming step of forming the outer appearance of the contact tip by processing the side surface of the contact member; 2. In paragraph 1, In the above-mentioned cutting edge formation step, A method for manufacturing a contact tip, wherein a surface forming the above-mentioned cutting edge is subjected to a hard surface treatment.

3. In paragraph 1, In the above-mentioned cutting edge formation step, A method for manufacturing a contact tip, wherein the above-mentioned cutting edge is formed in a pyramidal or conical shape.

4. In paragraph 1, In the above-mentioned cutting edge formation step, The above-mentioned cutting edges are formed in multiples, and each cutting edge has a pyramidal shape. A method for manufacturing a contact tip, wherein each of the above-mentioned cutting edges is formed such that at least one vertex contacts an edge of the above-mentioned flat portion.

5. In paragraph 1, In the above-mentioned cutting edge formation step, A method for manufacturing a contact tip, wherein the above-mentioned cutting edge is formed of a plurality of cutting edges spaced apart from each other.

6. In paragraph 1, The above contact tip forming step is: A method for manufacturing a contact tip, wherein the side surface of the flat portion is processed to bring the edge of the flat surface into contact with the contact tip.

7. In paragraph 1, The above contact tip forming step is: A method for manufacturing a contact tip, wherein a side surface of the flat portion is processed to remove a portion of the contact tip on the flat surface.

8. In paragraph 1, A method for manufacturing a contact tip, further comprising a plating layer forming step of forming a plating layer on the contact tip.

9. A contact tip manufactured by the method according to paragraph 1; A barrel portion having one end connected to the contact tip; An elastic member located in the hollow portion of the above barrel and having one side supported by the contact tip; and An electrically conductive pin including a movable tip that moves in the longitudinal direction according to the compression and elongation of the elastic member.

10. In paragraph 9, The above contact tips are, An electrically conductive pin comprising a single tip having a triangular pyramidal shape.

11. In paragraph 9, The above contact tips are, It comprises a plurality of pointed ends in the shape of a square pyramid and a flat surface on which the plurality of pointed ends are formed. An electrically conductive pin, the edge of which of the above flat surfaces is in contact with the plurality of cutting edges.

12. In paragraph 9, The above contact tips are, An electrically conductive pin comprising a tip portion having a square pyramid shape with one vertex area removed and a flat surface on which the tip portion is formed.

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