Patent Publication Number: US-2023138545-A1

Title: Test connector device and manufacturing method of terminal block thereof

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application claims priority to Taiwanese Application Serial Number 110140851, filed on Nov. 2, 2021, which is herein incorporated by reference. 
     FIELD OF DISCLOSURE 
     The present invention provides a connector device, in particular, a test connector device for a semiconductor integrated circuit with contact pads or bumps and a manufacturing method of a terminal block thereof. 
     DESCRIPTION OF RELATED ART 
     Generally, in manufacturing processes of semiconductor chips and integrated circuits, in order to test the characteristics and parameters of the integrated circuits of each chip (IC), before the chips are packaged, the chips with poor electrical functions must be filtered out to ensure that the integrated circuits can function normally and prevent defective products from entering subsequent processes to increase the manufacturing costs. This testing process must take into account the design and density of current and future chips, so electrical connectors must also keep pace with technological development. 
     In recent years, with the rapid development of integrated circuit technology, a size of semiconductor integrated circuits has been gradually reduced, a chip capacity per unit area has increased, and an operation speed has been increasing. A space or pitch of a conventional probe array has to satisfy an increasing demand for electrical connection of pads or bumps, as well as an increasing demand for planarity. Although a size of a probe of the conventional probe array can be made quite small and close to micron-scale, pitches of the probe cards and scratching between tips of the probes and the contact pads/bumps of the chip will cause the probes to be worn unevenly to reduce a service life of the probes, thereby reducing the test reliability and yield. 
     In view of this, the inventor of the present invention has devoted himself to study the foregoing conventional techniques and aimed to solve the above-mentioned problems to make improvement. 
     SUMMARY 
     It is an objective of the present invention to provide a test connector device and a manufacturing method of a terminal block thereof, which can be used for testing or connecting operations of very fine-pitch semiconductor integrated circuits, thereby improving the test reliability, stability, and transmission efficiency. 
     It is another objective of the present invention to provide a test connector device and a manufacturing method of a terminal block thereof, which can maintain a direction of each terminal and prevent each terminal from being crooked due to collision by external force, and provide a good support and a restoring structure for restoring the component to be tested after it is tested. 
     Accordingly, the present invention provides a test connector device for testing a component to be tested, the component to be tested including a plurality of conductive portions, the test connector device including: a base, a terminal block, and a limiting member. The terminal block is disposed on the base. The terminal block includes a substrate and a plurality of terminal rows, and the substrate and the terminal rows have an integral form. Each of the terminal rows includes multiple terminals, and each of the terminals includes a first contact end and a second contact end arranged corresponding to each other. The limiting member positions the component to be tested and is movably assembled to one side of the base. The limiting member includes a positioning assembly and a plurality of rows of limiting slots, and the first contact ends protrude out of the limiting slots. The positioning assembly is movably positioned on the base, and each of the first contact ends contacts one of the conductive portions. 
     According to one embodiment, the positioning assembly includes a plurality of hooks, a plurality of limit pins, and a plurality of first elastic pieces, each of the hook passes through an open groove of the base and is positioned in the open groove, each of the limit pins is inserted into a limit hole of the base, and each of the first elastic pieces is sleeved on one of the limit pins and accommodated in one of the limit holes to elastically restore the limiting member. 
     According to one embodiment, when the first elastic pieces restore and push the limiting member, the first contact ends of each of the terminal rows are separated from the conductive portions of the component to be tested, and the limiting member is located at a first position; and when the component to be tested and the limiting member move toward the base, each of the conductive portions abuts one of the first contact ends, and the limiting member is located at a second position. 
     According to one embodiment, the present invention further includes a guide member disposed on another side of the base, and the guide member includes a plurality of rows of guide through grooves disposed corresponding to the second contact ends, wherein the second contact ends are limited by and protrude from the plurality rows of guide through grooves. 
     According to one embodiment, the guide member further includes a plurality of elastic buckles, a plurality of guide pins, and a plurality of second elastic pieces, each of the elastic buckles is engaged with a guide groove of the base, each of the guide pins is arranged corresponding to a guide hole of the base, and each of the second elastic pieces is sleeved on one of the guide pins and accommodated in one of the guide holes to elastically restore the guide member. 
     According to one embodiment, the present invention further includes a carrier plate supporting the base, and the carrier plate includes multiple conductive pads arranged in a plurality of rows and contacting the second contact ends respectively, wherein the guide member is disposed between the base and the carrier plate. 
     According to one embodiment, the terminal rows form a plurality of terminal groups, the terminal groups are arranged at intervals, and a distance between any two adjacent terminals in each terminal group ranges from 0.4 millimeters (mm) to 0.8 mm, and a distance between the terminal groups ranges from 1.8 to 2.2 mm. 
     According to one embodiment, a number of the terminal groups is 4, each of the terminal groups is arranged to form an array of 5×10, and in two adjacent terminal groups along the longitudinal direction, the terminals of one terminal group are provided in a face-to-face arrangement with respect to the terminals of the other terminal group. 
     According to one embodiment, a distance between any two adjacent ones of the terminals in each of the terminal rows ranges from 0.2 mm to 0.9 mm, and a distance between any two adjacent ones of the terminal rows ranges from 0.4 mm to 1 mm. 
     According to one embodiment, the first contact end of each of the terminals includes a first extension portion and a first top portion connected to the first extension portion, and the second contact end of each of the terminals includes a second extension portion and a second top portion connected to the second extension portion. 
     According to one embodiment, the limiting member further includes a limit groove on one side facing away from the base, the limit groove accommodates and positions the component to be tested, and a shape of the limit groove corresponds to a shape of the component to be tested. 
     A manufacturing method of a terminal block, including following steps:
     providing at least one base portion;   forming a conductive layer on the at least one base portion, and forming a patterned structure on the conductive layer, so that the patterned structure forms a plurality of terminals arranged in an array on the at least one base portion; and   providing an adhesive layer on the terminals, wherein the above steps are repeated to form the terminal block assembled on a substrate and including a plurality of terminal rows.   

     According to one embodiment, the patterned structure forms a spacer pad and terminal groups located at two sides of the spacer pad by exposure, development, and etching, and the terminals of the terminal groups of the patterned structure are provided in a face-to-face arrangement. 
     According to one embodiment, a distance between any two adjacent terminals in each terminal group ranges from 0.4 millimeters (mm) to 0.8 mm, a distance between the terminal groups ranges from 1.8 mm to 2.2 mm, and in two adjacent terminal groups along the longitudinal direction, the terminals of one terminal group are provided in a face-to-face arrangement with respect to the terminals of the other terminal group. 
     According to one embodiment, a distance between any two adjacent terminals in each of the terminal rows ranges from 0.2 mm to 0.9 mm, and a distance between any two adjacent terminal rows ranges from 0.4 mm to 1 mm. 
     The test connector device of the present invention not only has the convenience of assembly and design flexibility, but also can be quickly used in current package test equipment and various electronic equipment. The terminal block and the base can be integrally formed or assembled. The terminals of the terminal block have small-spacing, high-strength, high-conductivity, and low-impedance, and therefore, when transmitting signals or currents, the present invention can alleviate a temperature rising problem caused by high impedance, which improves the overall transmission efficiency and prolongs a service life. In addition to that, the various elastic designs of the terminals can also be adapted to the current application of various current testing equipment. Furthermore, the test connector device of the embodiment has a good supporting and elastic structure, which can well restore the component to be tested disposed on the limiting plate, thereby improving the test yield and production efficiency. 
     According to the requirements of the component to be tested, the manufacturing method of the terminal block can perform modular lamination, so that the base portions, the conductive layer, and the adhesive layer are repeatedly stacked to form a structure in which the terminals and the substrate are formed in an integral form. The terminals have good mechanical and electrical properties, such as good conductivity, and prevent the first contact ends and the second contact ends from being damaged due to excessive bending when subjected to force. The terminals have advantages such as high strength, low impedance, and greatly reduced pitches. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       In order to make the above-mentioned content of the present invention easy to understand, the present invention is described below with reference to the preferred embodiments and in combination with the accompanying drawings: 
         FIG.  1    is a schematic view of a test connector device according to a first embodiment of the present invention. 
         FIG.  2    is a schematic view of the test connector device according to a second embodiment of the present invention. 
         FIG.  3 A  is a cross-sectional view of  FIG.  2    taken along line A-A. 
         FIG.  3 B  is an enlarged view of  FIG.  3 A  at position B. 
         FIGS.  4 A to  4 F  are schematic views illustrating terminals according to various embodiments of the present invention. 
         FIG.  5 A  is a cross-sectional view taken along line C-C illustrating the test connector device of the present invention. 
         FIG.  5 B  is a schematic operation view at another position of  FIG.  5 A . 
         FIG.  6 A  is a schematic view illustrating the terminal in a state of not being compressed according to the first embodiment of the present invention. 
         FIG.  6 B  is a schematic view illustrating the terminal in a state of being compressed according to the first embodiment of the present invention. 
         FIG.  7    is a schematic view of the test connector device according to a third embodiment of the present invention. 
         FIG.  8    is another assembled perspective view of  FIG.  7   . 
         FIG.  9    is an enlarged schematic view of  FIG.  8    at position D. 
         FIG.  10 A  is a cross-sectional view taken along line E-E illustrating the test connector device of the present invention. 
         FIG.  10 B  is a cross-sectional view of  FIG.  10 A  taken along line F-F. 
         FIGS.  11 A to  11 I  are schematic structural views illustrating a manufacturing process of a terminal block of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     Please refer to the drawings. The same reference numerals are used to denote the same or similar component. Working principles of the present disclosure are described by examples implemented in a suitable environment. The following description is based on some embodiments of the present disclosure and should not be construed as limiting other embodiments of the present disclosure not detailed herein. 
     As shown in  FIG.  1   , the present invention provides a test connector device  100  for testing a component to be tested  1  including a plurality of conductive portions  11 . In a first embodiment of  FIG.  1   , the component to be tested  1  is preferably a computer CPU chip with a ball grid array (BGA) package technology or other chip (IC) with solder balls  11 . However, in a second embodiment as shown in  FIG.  2   , the component to be tested  1  can also be a computer CPU chip or a dynamic random access memory (DRAM) with a land grid array (LGA) package technology or other chips with a flat surface (not illustrated). 
     The test connector device  100  includes a base  110 , a terminal block  120 , and a limiting member  140 . The terminal block  120  is disposed on the base  110 . In the embodiment shown in  FIG.  1   , the terminal block  120  is preferably fixed to the base  110  by being assembled to the base  10 . However, in alternative embodiments, the terminal block  120  can also be combined with the base  110  by insert molding, which can be changed as needed. The terminal block  120  includes a substrate  122  and a plurality of rows of terminals  124  integrally formed with the substrate  122 . A manufacturing method of the terminal block  120  is described in detail below. 
     The positioning assembly  142  includes at least one hook  1423 , at least one limit pin  1421  and at least one first elastic piece  170 . The hook  1423  is inserted through a open groove  118  of the base  110  and is positioned in the open groove  118 . The limit pin  1421  is inserted into a limit hole  114  of the base  110 . The first elastic piece  170  is sleeved on the limit pin  1421  and accommodated in the limit hole  114  to elastically restore the limiting member  140 . In the embodiment shown in  FIG.  1   , the numbers of the hooks  1423 , the limit pins  1421 , and the first elastic pieces  170  are respectively four, but the present embodiment is not limited in this regard. Specifically, the first elastic piece  170  can be sleeved on the limit pin  1421  of the positioning assembly  142  and accommodated in the limit hole  114  of the base  110  so as to be limited in the limit hole  114 . 
     In the embodiment shown in  FIG.  2   , the component to be tested  1  with the LGA package technology also has a foolproof mechanism (not illustrated). Accordingly, in order to facilitate assembling, the limiting member  140  further includes a plurality of positioning notches  141  arranged correspondingly. The base  110  comprises a plurality of positioning ribs  123  arranged corresponding to the positioning notches  141 , which facilitates more convenient and rapid assembling or testing operations, and prevents wrong assembly or testing errors. 
     Referring to  FIG.  3 A  and  FIG.  3 B  together, each of the terminals in each row  124  includes a first contact end  125  and a second contact end  128  corresponding to each other. The component to be tested  1  is disposed on one side of the limiting member  140 , and the limiting member  140  is movably assembled on one side of the base  110 . The limiting member  140  includes a positioning assembly  142  and a plurality of rows of limiting slots  146 . The first contact ends  125  protrude out of the limiting slots  146 . Each limiting slot  146  further includes a plurality of through holes  148  that are spaced apart and communicate with each other, and the through holes  148  are arranged corresponding to the first contact ends  125 , respectively. A shape of each limiting slot  146  is preferably an elongated through hole, and a shape of each through hole  148  is preferably a circle; however, the present invention is not limited in this regard. A diameter of each through hole  148  is greater than a width of a portion connecting the limiting slots  146 , so that a first top portion  127  of each first contact end  125  can be easily inserted through the corresponding through hole  148  and be limited therein, so as to maintain a direction of each first contact end  125  and prevent the first contact end  125  from being crooked due to collision by external force, thereby prolonging a service life of the terminals  124  and the terminal block  120 . 
     In the embodiment shown in  FIG.  1   , the present invention further includes a guide member  150  disposed on another side of the base  110  and/or the terminal block  120 . The guide member  150  includes a plurality of rows of guide through grooves  152  corresponding to the second contact ends  128 . The second contact ends  128  are limited by and protrude from the plurality of rows of guide through grooves  152 . The guide member  150  further includes at least one elastic buckle  154 , at least one guide pin  156 , and at least one second elastic piece  172 . The elastic buckle  154  is engaged with a guide groove  112  of the base  110 , the guide pin  156  is disposed corresponding to a guide hole  116  of the base  110 , and the second elastic piece  172  is sleeved on the guide pin  156  and accommodated in the guide hole  116  to elastically restore the guide member  150 . In the embodiment shown in  FIG.  1   , the numbers of the elastic buckles  154 , the guide pins  156 , and the second elastic pieces  172  are respectively two; however, the present embodiment is not limited in this regard. In addition, the first elastic piece  170  and the second elastic piece  172  described herein are, for example, compression springs, elastic sheets, or other suitable elements, and the present invention is not limited in this regard. 
     The limiting member  140  is downwardly assembled to one side of the base  110  by means of the positioning assembly  140 . The guide member  150  is assembled to another side of the base  110  by means of the elastic buckle  154  and the guide pin  156 , and an assembling direction of the guide member  150  is opposite to an assembling direction of the limiting member  140 . The limiting slots  146  of the limiting member  140  and the guide through grooves  152  of the guide member  150  can effectively maintain directions of the terminals  124  and prevent the terminals  124  from being crooked due to collision by external force. In addition, an overall structural design of the limiting member  140 , the guide member  150 , and the terminal base  120  can be quickly adjusted and modified according to the testing requirements of the component to be tested  1 . 
     As shown in  FIG.  2   , the second embodiment of the present invention further includes a carrier plate  160  for supporting the base  110 . The carrier plate  160  includes a plurality of rows of conductive pads  162  in contact with the respective second contact ends  128 . The guide member  150  is disposed between the base  110  and the carrier plate  160 . In the present embodiment, the carrier plate  160  is preferably a mother board, which is connected to a testing machine (not illustrated) through the conductive pads  162  for detecting and transmitting signals. 
     In the embodiment shown in  FIG.  1    and  FIG.  2   , terminal rows  130  form a plurality of terminal groups  132  according to the corresponding conductive portions  11 . For example, four terminal groups  132  having an array of 5×10, that is, 200 terminals  124  in total; however, the present embodiment is not limited in this regard. The terminal groups  132  are spaced apart from each other, wherein in two adjacent terminal groups  132  along the longitudinal direction, the terminals  124  of one terminal group  132  are arranged facing the terminals of the other terminal group  132 . A distance between any two adjacent terminals  124  in each terminal row  130  is 0.4 to 0.8 millimeters (mm), and is preferably 0.65 mm in this embodiment. A distance between the terminal groups  132  ranges from 1.8 to 2.2 mm, and is preferably 1.95 mm in this embodiment. However, in alternative embodiments, the distance between the terminals  124  and the distance between the terminal groups  132  can be changed according to needs or designs, and the present invention is not limited in this regard. 
     In the present embodiment, each terminal  124  can be changed according to needs for being used, as shown in  FIG.  4 A  to  FIG.  4 F . In the embodiment shown in  FIG.  4 A  and  FIG.  4 B , the first top portion  127  and a second top portion  131  of each terminal  124  can be designed to be circular, flat, or a combination thereof according to requirements. As shown in  FIG.  4 C , the second contact end  128  can use surface mount technology (SMT) and is electrically welded to, for example, the conductive pad  162 . As shown in  FIG.  4 D , the first contact end  125  is capable of piercing, which can directly pierce a wire (not illustrated). The first contact end  125  in  FIG.  4 E  is capable of clamping, and can clamp a metal part (not illustrated). The second contact end  128  in  FIG.  4 F  employs a dual in-line package (DIP), which can be inserted and fixed to the circuit board (not illustrated). In addition to the above-mentioned various structures of the terminals  124 , the embodiment also includes, for example, a spring connector (POGO Pin) or other pogo pins, etc., and the present embodiment is not limited in this regard. 
     The first contact end  125  of each terminal  124  includes a first extension portion  126  and a first top portion  127  connected to the first extension portion  126 . The second contact end  128  includes a second extension portion  129  and a second top portion  131  connected to the second extension portion  129 . A fastening portion  133  connecting the first contact end  125  and the second contact end  128  can be positioned in the substrate  122 , as shown in  FIGS.  6 A and  6 B . 
     When the component to be tested  1  is positioned on the limiting member  140  and tested, the limiting member  140  can provide an elastic restoration function required for repeated pressing, and the guide member  150  can also provide elasticity to protect each terminal  124 . Specifically, referring to  FIGS.  3 A,  3 B,  5 A, and  5 B  together, when the first elastic piece  170  pushes the limiting member  140  elastically (releasing an elastic restoration force), the first contact ends  125  of each row of the terminals  124  are separated from the conductive portions  11  of the component to be tested  1 , and at this point, the limiting member  140  is located at a first position  180  (as shown in  FIG.  6 A ). When the component to be tested  1  and the limiting member  140  move toward the base  110  together, each conductive portion  11  presses down against one of the first contact ends  125 , and at this point, the limiting member  140  is located at a second position  182  (as shown in  FIG.  6 B ). When the limiting member  140  is located at the second position  182 , signals of the conductive portions  11  of the component to be tested  1  can be transmitted to the conductive pads  162  of the carrier plate  160  through the first contact ends  125  and the second contact ends  128  of the terminals  124 , so that the present invention can test whether each conductive portion  11  has good electrical characteristics or circuit connection. 
     The plurality rows of terminals  124  of the terminal block  120  have small-spacing, high-strength, high-conductivity, and low-impedance. Therefore, when transmitting signals or currents, the present invention can alleviate a temperature rising problem caused by high impedance, which improves the overall transmission efficiency and prolongs a service life. In addition to that, the various elastic designs of the terminals  124  can also be adapted to the current application of various current testing equipment. Furthermore, the test connector device  100  of the embodiment has a good supporting and elastic structure, which can well restore the component to be tested  1  disposed on the limiting plate  140 , thereby improving the test yield and production efficiency. 
     Please refer to  FIG.  7    and  FIG.  8    together, which are exploded perspective views according to a third embodiment of the present invention. The present embodiment and the first two embodiments are mainly different in the components to be tested (not illustrated). Specifically, the component to be tested in this embodiment is preferably an integrated circuit (application specific integrated circuit; ASIC) or a chip with other special specifications; however, the present embodiment is not limited in this regard. The overall structural design of a limiting member  240 , a guide member  250 , and a terminal block  220  in the present embodiment can be adjusted and changed according to the testing requirements of the component to be tested  1 , as described below. For other structural details and connection relationships of the present embodiment, please refer to the descriptions in the foregoing embodiments, and details are not repeated here. 
     The conductive portions (not illustrated) of the component to be tested  1  are more densely arranged and have finer pitches, and a manufacturing method of the terminal block  120  in this embodiment is the same as that in the previous embodiment, but the arrangement of terminal rows  230  has a different design based on the arrangement of the conductive portions (not illustrated). Please also refer to  FIG.  9   , which is an enlarged schematic view at position D of  FIG.  8   . Specifically, the terminals  224  of any two adjacent terminal rows  230  are arranged facing opposite directions, and the distance between any two adjacent terminals  224  in each terminal row  230  is 0.2 to 0.9 mm, preferably 0.65 mm. In addition, the distance between any two adjacent terminal rows  230  is 0.4 to 1 mm, preferably 0.8 mm. However, in alternative embodiments, the distance between the terminals  124  and the distance between any two adjacent terminal rows  230  can be adjusted as required. 
     In particular, the base  210  further includes a plurality of probe sets  212  and a plurality of positioning holes  216  for different designs and structures of the component to be tested  1 . In the embodiment shown in  FIG.  7    and  FIG.  8   , the probe sets  212  are preferably disposed at four corners of the base  210  respectively. In alternative embodiments, each probe set  212  can also be changed into the terminal structure of the foregoing embodiment according to different requirements, and the present invention is not limited in this regard. The limiting member  240  and the guide member  250  assembled on the base  210  are respectively provided with first probe through holes  249  and second probe through holes (not labeled) corresponding to the probe sets  212 , so that each probe set  212  transmits signals or currents from the conductive portions of the component to be tested to the conductive pads (not illustrated) on the carrier plate of a testing machine. In addition, the guide member  250  is also provided with limit pins  256  corresponding to the positioning holes  216 , so as to be accurately positioned on the base  110 . It should be noted that the terminals  224  in this embodiment have a structure similar to the terminals  124  in the previous two embodiments, and are arranged in different ways according to the component to be tested  1 . For the rest of the structure of this embodiment, please refer to the descriptions in the previous embodiment, and details are not repeated here. 
     In addition, in the embodiment shown in  FIG.  7    and  FIG.  8   , the limiting member  240  further includes a limit groove  244  for accommodating the component to be tested  1 , so as to increase the positioning effect and prevent the component to be tested  1  from being crooked. A shape of the limit groove  244  corresponds to a shape of the component to be tested  1  and is, for example, rectangular or circular; however, the present invention is not limited herein. In addition to the various structures of the terminals  124  of the foregoing embodiments, each terminal row  230  in this embodiment also includes, for example, a spring connector (POGO pin) or other pogo pins, and the present invention is not limited in this regard. 
     Please refer to  FIG.  10 A  and  FIG.  10 B  together. Similarly, when a first elastic piece  270  restores the limiting member  240  (releases the elastic restoration force), the first contact ends  225  of the terminals  224  are detached from the conductive portions  11  of the component to be tested. At this point, the limiting member  240  is located at a first position (not illustrated). When the component to be tested  1  and the limiting member  240  move toward the base  210 , the conductive portions  11  press down against the first contact ends  225 . At this point, the limiting member  240  is located at a second position (not illustrated). When the limiting member  240  is located at the second position, signals of the conductive portions  11  of the component to be tested  1  can be transmitted to the conductive pads (not illustrated) of a motherboard (not illustrated) of the testing machine through the first contact ends  225  and the second contact ends of the terminals  224 , so as to test whether the electrical characteristics or circuit connections of the conductive portions  11  are good or not. 
     The test connector device  200  of the present embodiment not only has the convenience of assembly and design flexibility, but also can be quickly used in the current package test equipment and various electronic equipment. The terminals  124  of the terminal block  120  have small-spacing, high-strength, high-conductivity, and low-impedance. Therefore, when transmitting signals or currents, the present invention can alleviate a temperature rising problem caused by high impedance, which improves the overall transmission efficiency and prolongs a service life. In addition to that, the various elastic designs of the terminals  124  can also be adapted to the current application of various current testing equipment. Furthermore, the test connector device  100  of the embodiment has a good supporting and elastic structure, which can well restore the component to be tested  1  disposed on the limiting plate  240 , thereby improving the test yield and production efficiency. 
     Referring to  FIGS.  11 A to  11 I  together, the present invention further provides a manufacturing method of the terminal block  120 , and the terminal block  120  of the first embodiment is described below as an example. The manufacturing method of the terminal block  120  includes the following steps. Step S1: providing at least one base portion  1221 . Step S2: forming a conductive layer  134  on the at least one base portion  1221 , and forming a patterned structure  136  on the conductive layer  134 , wherein the patterned structure  136  forms a plurality of terminals  124  distributed in an array on the base portion  1221 . Step S3: providing an adhesive layer  138  on the terminals  124 , wherein the above steps S1 to S3 are repeated to form the terminal block  120  assembled on a substrate  122  and including the terminals  124  arranged in a plurality of rows. The first contact end  125  of each terminal  124  includes a first extension portion  126  and a first top portion  127  connected to the first extension portion  126 . The second contact end  128  includes a second extension portion  129  and a second top portion  131  connected to the second extension portion  129 . A fastening portion  133  connects the first contact end  125  and the second contact end  128 , and the fastening portion  133  can be positioned in the substrate  122 . 
     It should be noted here that a material of the conductive layer  134  is selected from a group consisting of beryllium copper alloy, phosphor bronze, nickel titanium alloy, or copper alloy. Materials of the base portions  1221  and  1222  are selected from a group of glass cloth materials with epoxy resin (FR4), polyimide, ceramic, or other suitable insulating materials. The patterned structure  136  is formed by chemical processes such as exposure, development, and etching to form a spacer pad  137 , terminal groups (not labeled) at two sides of the spacer pad  137 , and positioning pads (not labeled) at an edge of each terminal group. The spacer pad  137  and the positioning pads can effectively separate the terminal groups to avoid short-circuit due to contact between the terminals. The terminals  124  of the respective terminal groups are arranged face-to-face, that is, the first contact ends  125  and the first contact ends  128  of the respective terminal groups are bent to have a face-to-face arrangement. However, in the third embodiment shown in  FIGS.  7  to  9   , the terminals  224  of the terminal block  222  can also be arranged to face a same direction, and the configuration may vary as required or designed. A distance between any two adjacent terminals  124  in each terminal group is 0.4 to 0.8 mm, and a distance between the terminal groups is 1.8 to 2.2 mm. The terminals  124  of any two adjacent terminal groups face opposite directions, and a distance between any two adjacent terminals  124  in each row of the terminals is 0.2 to 0.9 mm, and a distance between any two adjacent terminal rows is 0.4 to 1 mm. 
     According to the requirements of the component to be tested  1 , the present embodiment can perform a modular lamination manufacturing process, so that the base portions  1221 ,  1222 , the conductive layer  134 , and the adhesive layer  138  are repeatedly stacked to form a structure in which a plurality of terminals  124  and the substrate  122  are formed in an integral form. The terminals  124  have good mechanical and electrical properties, such as good conductivity, and prevent the first contact ends  125  and the second contact ends  128  from being damaged due to excessive bending when subjected to force. The terminals  124  have advantages such as high strength, low impedance, and greatly reduced pitches. 
     The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Other equivalent changes based on the present invention shall all fall within the protection scope of the present invention.