Patent Publication Number: US-2020292580-A1

Title: Method for manufacturing probes

Description:
RELATED APPLICATIONS 
     This application claims priority to Taiwanese Application Serial Number 108108088 filed Mar. 11, 2019, which is herein incorporated by reference. 
     BACKGROUND 
     Technical Field 
     The present disclosure relates to methods for manufacturing probes. 
     Description of Related Art 
     The main function of a probe card is to directly contact with the welding pads or bumps on a device under test (such as a wafer, a chip or a die) with its probe, in order to achieve the purpose of testing the device under test with the configuration of a tester or software control, such that defective products can be screened. In general, a testing signal is generated from the tester, and the testing signal reaches the device under test through the probe card. Afterwards, a signal of testing result is transmitted back to the tester through the probe card for analysis. 
     Generally speaking, the probe card is equipped with a probe head in order to fix a certain number of probes. During testing, the device under test is held on a tester, and a number of probes contact with the device under test at the same time. 
     SUMMARY 
     A technical aspect of the present disclosure is to provide a method for manufacturing probes which can produce a plurality of probes from a plate by laser cutting in order to reduce the cost of production. 
     According to an embodiment of the present disclosure, a method for manufacturing probes is provided. The manufacturing method includes forming at least one recessed portion on a plate such that the plate has a first subsidiary plate, a second subsidiary plate and a third subsidiary plate mutually connected along a first direction. The first subsidiary plate has a first thickness along a second direction. The second direction is perpendicular to the first direction. The second subsidiary plate corresponds to the recessed portion and has a second thickness along the second direction. The first thickness is larger than the second thickness. The second subsidiary plate is located between the first subsidiary plate and the third subsidiary plate. The third subsidiary plate has a third thickness along the second direction. The third thickness is larger than the second thickness. Subsequently, the plate is held and cut by laser to form a plurality of probes. Each of the probes includes a probe tail formed from the first subsidiary plate, a probe body formed from the second subsidiary plate and a probe tip formed form the third subsidiary plate. A width of the probe body along a third direction is larger than a width of the probe tip and the probe tail along the third direction. The third direction is perpendicular to the first direction and the second direction. 
     According to an embodiment of the present disclosure, a method for manufacturing probes is provided. The manufacturing method includes forming a plurality of recessed portions on a plate such that the plate has a first subsidiary plate, a second subsidiary plate and a third subsidiary plate mutually connected along a first direction. The first subsidiary plate has a first thickness along a second direction. The second direction is perpendicular to the first direction. The first subsidiary plate and the third subsidiary plate respectively correspond to the recessed portions. The second subsidiary plate has a second thickness along the second direction. The second thickness is larger than the first thickness. The second subsidiary plate is located between the first subsidiary plate and the third subsidiary plate. The third subsidiary plate has a third thickness along the second direction. The third thickness is smaller than the second thickness. Subsequently, the plate is held and cut by laser to form a plurality of probes. Each of the probes includes a probe tail formed from the first subsidiary plate, a probe body formed from the second subsidiary plate and a probe tip formed form the third subsidiary plate. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosure can be more fully understood by reading the following detailed description of the embodiments, with reference made to the accompanying drawings as follows: 
         FIG. 1  is a flow diagram of a manufacturing method of probes according to an embodiment of the present disclosure; 
         FIG. 2  is a top view of the plate of  FIG. 1 ; 
         FIG. 3  is a schematic view of the plate of  FIG. 1 ; 
         FIG. 4  is a schematic view of a plurality of finished products cut from the plate of  FIG. 3  by laser; 
         FIG. 5  is a top view of a plate according to another embodiment of the present disclosure; 
         FIG. 6  is a schematic view of the plate of  FIG. 5 ; 
         FIG. 7  is a schematic view of a plurality of finished products cut from the plate of  FIG. 6  by laser; 
         FIG. 8  is a schematic view of a plate according to a further embodiment of the present disclosure; 
         FIG. 9  is a schematic view of a plurality of finished products cut from the plate of  FIG. 8  by laser; 
         FIG. 10  is a flow diagram of a manufacturing method of probes according to another embodiment of the present disclosure; 
         FIG. 11  is a top view of the plate of  FIG. 10 ; 
         FIG. 12  is a schematic view of the plate of  FIG. 11 ; 
         FIG. 13  is a schematic view of a plurality of finished products cut from the plate of  FIG. 12  by laser; 
         FIG. 14  is a top view of a plate according to another embodiment of the present disclosure; 
         FIG. 15  is a schematic view of the plate of  FIG. 14 ; 
         FIG. 16  is a schematic view of a plurality of finished products cut from the plate of  FIG. 15  by laser; 
         FIG. 17  is a schematic view of a plate according to a further embodiment of the present disclosure; 
         FIG. 18  is a schematic view of a plurality of finished products cut from the plate of  FIG. 17  by laser; 
         FIG. 19  is a schematic view of a plate according to another embodiment of the present disclosure; 
         FIG. 20  is a schematic view of a plurality of finished products cut from the plate of  FIG. 19  by laser; 
         FIG. 21  is a schematic view of a plate according to a further embodiment of the present disclosure; 
         FIG. 22  is a schematic view of a plurality of finished products cut from the plate of  FIG. 21  by laser; 
         FIG. 23  is a schematic view of a plate according to another embodiment of the present disclosure; 
         FIG. 24  is a schematic view of a plurality of finished products cut from the plate of  FIG. 23  by laser; 
         FIG. 25  is a schematic view of a plate according to a further embodiment of the present disclosure; and 
         FIG. 26  is a schematic view of a plurality of finished products cut from the plate of  FIG. 25  by laser. 
     
    
    
     DETAILED DESCRIPTION 
     Drawings will be used below to disclose embodiments of the present disclosure. For the sake of clear illustration, many practical details will be explained together in the description below. However, it is appreciated that the practical details should not be used to limit the claimed scope. In other words, in some embodiments of the present disclosure, the practical details are not essential. Moreover, for the sake of drawing simplification, some customary structures and elements in the drawings will be schematically shown in a simplified way. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Reference is made to  FIG. 1 .  FIG. 1  is a flow diagram of a manufacturing method of probes S 100  according to an embodiment of the present disclosure. As shown in  FIG. 1 , the manufacturing method of probes S 100  includes the following procedures (it should be noted that the sequence of the procedures and the subsidiary procedures as mentioned below, unless otherwise specified, can all be adjusted upon the actual needs, or even executed at the same time or partially at the same time): 
     (1) Forming a recessed portion P on a plate  210  (Procedure S 110 ). Reference is made to  FIGS. 2-3 .  FIG. 2  is a top view of the plate  210  of  FIG. 1 .  FIG. 3  is a schematic view of the plate  210  of  FIG. 1 . To specific, as shown in  FIGS. 2-3 , the plate  210  forming the recessed portion P has a first subsidiary plate  211  and a second subsidiary plate  212  mutually connected along a first direction D 1 . The first subsidiary plate  211  has a first thickness TK 1  along a second direction D 2 . The second direction D 2  is perpendicular to the first direction D 1 . The second subsidiary plate  212  corresponds to the recessed portion P and has a second thickness TK 2  along the second direction D 2 . The first thickness TK 1  is larger than the second thickness TK 2 . In other words, the first subsidiary plate  211  of the plate  210  is thicker than the second subsidiary plate  212 . 
     (2) Holding the plate  210  on a machine (not shown) (Procedure S 120 ). 
     (3) Cutting the plate  210  by laser, for example, cutting the first subsidiary plate  211  of the plate  210  along a first path R 1  (Procedure S 130 ). In this embodiment, as shown in  FIGS. 2-3 , the first path R 1  is parallel with the first direction D 1 , and the first path R 1  stops at the junction between the first subsidiary plate  211  and the second subsidiary plate  212 . 
     (4) Cutting a first specific length SL 1  along a second path R 2  between the first subsidiary plate  211  and the second subsidiary plate  212  by laser (Procedure S 140 ). In this embodiment, as shown in  FIGS. 2-3 , the second path R 2  is parallel with a third direction D 3 . The third direction D 3  is perpendicular to the first direction D 1  and the second direction D 2 . To be specific, the second path R 2  is connected with the first path R 1 . In other words, the laser cutting along the second path R 2  can substantially follow the laser cutting along the first path R 1  continuously. 
     (5) Cutting the second subsidiary plate  212  of the plate  210  along a third path R 3  (Procedure S 150 ). In this embodiment, as shown in  FIGS. 2-3 , the third path R 3  is parallel with the first direction D 1 , and is staggered from the first path R 1  by the first specific length SL 1 . To be specific, the third path R 3  is connected with the second path R 2 . In other words, the laser cutting along the third path R 3  can substantially follow the laser cutting along the second path R 2  continuously. This means, the laser cutting of the plate  210  can be carried out continuously along the first path R 1 , the second path R 2  and the third path R 3 . 
     In this way, in this embodiment, with regard to different thicknesses of the plate  210 , namely the first thickness TK 1  and the second thickness TK 2  as mentioned above, the user can adopt mutually connected paths for laser cutting, which are the first path R 1 , the second path R 2  and the third path R 3  as mentioned above, in order to carry out laser cutting to the plate  210  in a convenient manner. 
     In addition, as shown in  FIGS. 2-3 , the user can cut the plate  210  by laser along a first path R 1 ′, a second path R 2 ′ and a third path R 3 ′ based on the method mentioned above. It is worth to note that, the second path R 2  and the second path R 2 ′ extend towards opposite directions. The length of laser cutting along the second path R 2 ′ can be equal to the first specific length SL 1 . However, this does not intend to limit the present disclosure. 
     In practical applications, the procedure as mentioned above to form the recessed portion P on the plate  210  can adopt but not limit to the following three processing methods of non-laser cutting: 
     (1.1) Covering a photoresist material (not shown) on a position of plate  210  corresponding to the first subsidiary plate  211 , and carrying out wet etching to the plate  210 . As blocked by the photoresist material, the portion of the first subsidiary plate  211  is not etched by the etching solution. On the contrary, the portion not covered by the photoresist material, i.e., the portion corresponding to the second subsidiary plate  212 , is etched by the etching solution, such that the plate  210  forms the recessed portion P at the position corresponding to the second subsidiary plate  212 . Subsequently, the photoresist material is removed. 
     (1.2) Removing a portion of the plate  210  corresponding to the position of the second subsidiary plate  212  by mechanical cutting, such that the plate  210  forms the recessed portion P at the position corresponding to the second subsidiary plate  212 . To be specific, the mechanical cutting can be milling. However, this does not intend to limit the present disclosure. 
     (1.3) Sand blasting a surface of the plate  210  corresponding to the second subsidiary plate  212 , such that the plate  210  forms the recessed portion P at the position corresponding to the second subsidiary plate  212 . 
     In sum, the processing methods of non-laser cutting as mentioned above process on the plate  210  in the second direction D 2 , such that the plate  210  appears as regions of the first subsidiary plate  211  and the second subsidiary plate  212  with different thicknesses. That is, through the processing methods of non-laser cutting as mentioned above, the probes are first processed in the second direction D 2 , so as to meet the requirement of appearance of the probes in the second direction D 2  (i.e., formation of the recessed portion P). Meanwhile, the technique of laser cutting as mentioned above processes to the plate  210  in the first direction D 1  and the third direction D 3 , so as to meet the requirement of appearance of the probes in the first direction D 1  and the third direction D 3 . Thus, the present disclosure can define and manufacture three-dimensional finished products  250  from the plate  210 . Moreover, the finished products  250  can be used as probes to be installed at a probe head (not shown). In this way, through the combination of the processing methods of non-laser cutting and the technique of laser cutting, the probes can be manufactured in a simple and easy manner. In addition, the application of laser cutting can decrease the error rate of processing between the probes. 
     On the other hand, reference is made to  FIG. 4 .  FIG. 4  is a schematic view of a plurality of finished products  250  cut from the plate  210  of  FIG. 3  by laser. In this embodiment, through the simple and convenient method of laser cutting as mentioned above, the user can produce a finished product  250  from the plate  210  through laser cutting. By repeating the procedures as mentioned above, as shown in  FIG. 4 , the user can efficiently produce a plurality of finished products  250  from the plate  210  through laser cutting. 
     In practical applications, as mentioned above, the finished products  250  can be used as probes to be installed at the probe head. The portion of each of the finished products  250  originally formed from the first subsidiary plate  211 , which is the probe tail of a probe for example, can be snapped to the probe head as a stopping structure  251 . The portion of each of the finished products  250  originally formed from the second subsidiary plate  212  can be used as the probe body  252  of a probe. 
     Reference is made to  FIGS. 5-6 .  FIG. 5  is a top view of a plate  210  according to another embodiment of the present disclosure.  FIG. 6  is a schematic view of the plate  210  of  FIG. 5 . In this embodiment, as shown in  FIGS. 5-6 , the plate  210  further includes a third subsidiary plate  213 . The second subsidiary plate  212  is located between the first subsidiary plate  211  and the third subsidiary plate  213 . The third subsidiary plate  213  has a third thickness TK 3  along the second direction D 2 . The third thickness TK 3  is larger than the second thickness TK 2 . In other words, the third subsidiary plate  213  of the plate  210  is thicker than the second subsidiary plate  212 . 
     In this embodiment, the manufacturing method of probes S 100  further includes the following procedures (it should be noted that the sequence of the procedures and the subsidiary procedures as mentioned below, unless otherwise specified, can all be adjusted upon the actual needs, or even executed at the same time or partially at the same time): 
     (6) Cutting a second specific length SL 2  along a fourth path R 4  between the second subsidiary plate  212  and the third subsidiary plate  213  by laser (Procedure S 160 ). In this embodiment, as shown in  FIGS. 5-6 , the fourth path R 4  is parallel with the third direction D 3 , and the fourth path R 4  is connected with the third path R 3 . In other words, the laser cutting along the fourth path R 4  can substantially follow the laser cutting along the third path R 3  continuously. 
     (7) Cutting the third subsidiary plate  213  of the plate  210  along a fifth path R 5  (Procedure S 170 ). In this embodiment, as shown in  FIGS. 5-6 , the fifth path R 5  is parallel with the first direction D 1 , and the fifth path R 5  is connected with the fourth path R 4 . In other words, the laser cutting along the fifth path R 5  can substantially follow the laser cutting along the fourth path R 4  continuously. 
     In addition, as shown in  FIGS. 5-6 , the user can cut the plate  210  by laser along a fourth path R 4 ′ and a fifth path R 5 ′ based on the method mentioned above. It is worth to note that, the fourth path R 4  and the fourth path R 4 ′ extend towards opposite directions. The length of laser cutting along the fourth path R 4 ′ can be equal to the second specific length SL 2 . However, this does not intend to limit the present disclosure. 
     Reference is made to  FIG. 7 .  FIG. 7  is a schematic view of a plurality of finished products  250  cut from the plate  210  of  FIG. 6  by laser. In this embodiment, through the simple and convenient method of laser cutting as mentioned above, the user can produce a finished product  250  from the plate  210  through laser cutting. By repeating the procedures as mentioned above, as shown in  FIG. 7 , the user can efficiently produce a plurality of finished products  250  from the plate  210  through laser cutting. Similarly, the finished products  250  can be used as probes to be installed at the probe head. It is worth to note that, in practical applications, the first subsidiary plate  211 , the second subsidiary plate  212  and the third subsidiary plate  213  of the plate  210  at least have a common plane perpendicular to the second direction D 2 , such that a cross-section of the plate  210  perpendicular to the third direction D 3  can form a “U” shape. Moreover, each of the finished products  250  in this embodiment also has a side surface in a “U” shape. 
     Furthermore, according to the actual requirements for the finished products  250 , the second specific length SL 2  can be the same as the first specific length SL 1 , such that the portion of each of the finished products  250  originally formed from the first subsidiary plate  211 , which is the probe tail of a probe for example, and the portion of each of the finished products  250  originally formed from the third subsidiary plate  213 , which is the probe tip of a probe for example, have the same widths in the third direction D 3 . On the other hand, according to the actual requirements for the finished products  250 , the second specific length SL 2  can be different from the first specific length SL 1 , such that the portion of each of the finished products  250  originally formed from the first subsidiary plate  211 , which is the probe tail of a probe for example, and the portion of each of the finished products  250  originally formed from the third subsidiary plate  213 , which is the probe tip of a probe for example, have different widths in the third direction D 3 . 
     Reference is made to  FIGS. 8-9 .  FIG. 8  is a schematic view of a plate  210  according to a further embodiment of the present disclosure.  FIG. 9  is a schematic view of a plurality of finished products  250  cut from the plate  210  of  FIG. 8  by laser. In this embodiment, as shown in  FIGS. 8-9 , the first subsidiary plate  211 , the second subsidiary plate  212  and the third subsidiary plate  213  of the plate  210  do not have a common plane perpendicular to the second direction D 2 , such that a cross-section of the plate  210  perpendicular to the third direction D 3  can form a “H” shape. Moreover, each of the finished products  250  in this embodiment also has a side surface in a “H” shape. Moreover, through the paths R 1 , R 2 , R 3 , R 4 , R 5 , R 1 ′, R 2 ′, R 3 ′, R 4 ′, R 5 ′ of laser cutting as mentioned above, the central portion of each of the finished products  250 , which is the probe body for example, has a wider width in the third direction D 3 . This means, the distance between the third paths R 3 , R 3 ′ is larger than the distance between the first paths R 1 , R 1 ′, and is larger than the distance between the fifth paths R 5 , R 5 ′. Therefore, as viewed from the second direction D 2 , each of the finished products  250  has a “+” shape. 
     In addition, in this embodiment, as shown in  FIGS. 8-9 , the distance between the third paths R 3 , R 3 ′ is larger than the second thickness TK 2 . Therefore, when the two ends of each of the finished products  250  are compressed towards each other, the central portion tends to bend about the third direction D 3 , which is understood as bending towards the second direction D 2 . In this way, when a plurality of finished products  250  are used as probes to be installed at the probe head, and the two ends of each of the probes are compressed towards each other at the same time, the probes will bend about the third direction D 3 , such that the condition that the probes touch with each other because of bending due to compression is avoided. 
     Reference is made to  FIG. 10 .  FIG. 10  is a flow diagram of a manufacturing method of probes S 500  according to another embodiment of the present disclosure. As shown in  FIG. 10 , the manufacturing method of probes S 500  includes the following procedures (it should be noted that the sequence of the procedures and the subsidiary procedures as mentioned below, unless otherwise specified, can all be adjusted upon the actual needs, or even executed at the same time or partially at the same time): 
     (1) Forming a recessed portion P on a plate  610  (Procedure S 510 ). Reference is made to  FIGS. 11-12 .  FIG. 11  is a top view of the plate  610  of  FIG. 10 .  FIG. 12  is a schematic view of the plate  610  of  FIG. 11 . To be specific, as shown in  FIGS. 11-12 , the plate  610  has a first subsidiary plate  611  and a second subsidiary plate  612  mutually connected along a first direction D 1 . The first subsidiary plate  611  has a first thickness TK 1  along a second direction D 2 . The second direction D 2  is perpendicular to the first direction D 1 . The second subsidiary plate  612  has a second thickness TK 2  along the second direction D 2 . The first thickness TK 1  is different from the second thickness TK 2 . For example, in this embodiment, the first subsidiary plate  611  of the plate  610  is thicker than the second subsidiary plate  612 , and the second subsidiary plate  612  corresponds to the recessed portion P. 
     (2) Holding the plate  610  on a machine (not shown) (Procedure S 520 ). 
     (3) Cutting the plate  610  by laser, for example, cutting the first subsidiary plate  611  of the plate  610  along a first path R 1  (Procedure S 530 ). In this embodiment, as shown in  FIGS. 11-12 , the first path R 1  is parallel with the first direction D 1 . 
     (4) Cutting the second subsidiary plate  612  of the plate  610  along a second path R 2  by laser (Procedure S 540 ). In this embodiment, as shown in  FIGS. 11-12 , the second path R 2  is a curved path. To be specific, the second path R 2  is connected with the first path R 1 . In other words, the laser cutting along the second path R 2  can substantially follow the laser cutting along the first path R 1  continuously. 
     In this way, in this embodiment, with regard to different thicknesses of the plate  610 , namely the first thickness TK 1  and the second thickness TK 2  as mentioned above, the user can adopt mutually connected paths for laser cutting, which are the first path R 1  and the second path R 2  as mentioned above, in order to carry out laser cutting to the plate  610  in a simple and convenient manner. 
     In practical applications, the procedure as mentioned above to form the recessed portion P on the plate  610  can adopt but not limit to the following three processing methods of non-laser cutting: 
     (1.1) Covering a photoresist material (not shown) on a position of plate  610  corresponding to the first subsidiary plate  611 , and carrying out wet etching to the plate  610 . As blocked by the photoresist material, the portion of the first subsidiary plate  611  is not etched by the etching solution. On the contrary, the portion not covered by the photoresist material, i.e., the portion corresponding to the second subsidiary plate  612 , is etched by the etching solution, such that the plate  610  forms the recessed portion P at the position corresponding to the second subsidiary plate  612 . Subsequently, the photoresist material is removed. 
     (1.2) Removing a portion of the plate  610  corresponding to the position of the second subsidiary plate  612  by mechanical cutting, such that the plate  610  forms the recessed portion P at the position corresponding to the second subsidiary plate  612 . To be specific, the mechanical cutting can be milling. However, this does not intend to limit the present disclosure. 
     (1.3) Sand blasting a surface of the plate  610  corresponding to the second subsidiary plate  612 , such that the plate  610  forms the recessed portion P at the position corresponding to the second subsidiary plate  612 . 
     On the other hand, reference is made to  FIG. 13 .  FIG. 13  is a schematic view of a plurality of finished products  650  cut from the plate  610  of  FIG. 12  by laser. In this embodiment, through the simple and convenient method of laser cutting as mentioned above, the user can produce a finished product  650  from the plate  610  through laser cutting. By repeating the procedures as mentioned above, as shown in  FIG. 13 , the user can efficiently produce a plurality of finished products  650  from the plate  610  through laser cutting. 
     In practical applications, as mentioned above, the finished products  650  can be used as probes to be installed at a probe head. The portion of each of the finished products  650  originally formed from the first subsidiary plate  611 , which is the probe tail of a probe for example, can be snapped to the probe head as a stopping structure  651 . The portion of each of the finished products  650  originally formed from the second subsidiary plate  612  can be used as the probe body  652  of a probe. 
     Reference is made to  FIGS. 14-15 .  FIG. 14  is a top view of a plate  610  according to another embodiment of the present disclosure.  FIG. 15  is a schematic view of the plate  610  of  FIG. 14 . In this embodiment, as shown in  FIGS. 14-15 , the plate  610  further includes a third subsidiary plate  613 . The second subsidiary plate  612  is located between the first subsidiary plate  611  and the third subsidiary plate  613 . The third subsidiary plate  613  has a third thickness TK 3  along the second direction D 2 . The third thickness TK 3  is different from the second thickness TK 2 . For example, in this embodiment, the second thickness TK 2  is thinner than the first thickness TK 1  and the third thickness TK 3 . 
     In this embodiment, the manufacturing method of probes S 500  further includes the following procedures (it should be noted that the sequence of the procedures and the subsidiary procedures as mentioned below, unless otherwise specified, can all be adjusted upon the actual needs, or even executed at the same time or partially at the same time): 
     (5) Cutting the third subsidiary plate  613  of the plate  610  along a third path R 3  (Procedure S 550 ). In this embodiment, as shown in  FIGS. 14-15 , the third path R 3  is parallel with the first direction D 1 , and is staggered from the first path R 1 . To be specific, the third path R 3  is connected with the second path R 2 . In other words, the laser cutting along the third path R 3  can substantially follow the laser cutting along the second path R 2  continuously. This means, the laser cutting of the plate  610  can be carried out continuously along the first path R 1 , the second path R 2  and the third path R 3 . 
     In this way, in this embodiment, with regard to different thicknesses of the plate  610 , namely the first thickness TK 1 , the second thickness TK 2  and the third thickness TK 3  as mentioned above, the user can adopt mutually connected paths for laser cutting, which are the first path R 1 , the second path R 2  and the third path R 3  as mentioned above, in order to carry out laser cutting to the plate  610  in a simple and convenient manner. 
     Reference is made to  FIG. 16 .  FIG. 16  is a schematic view of a plurality of finished products  650  cut from the plate  610  of  FIG. 15  by laser. In this embodiment, through the simple and convenient method of laser cutting as mentioned above, the user can produce a finished product  650  from the plate  610  through laser cutting. By repeating the procedures as mentioned above, as shown in  FIG. 16 , the user can efficiently produce a plurality of finished products  650  from the plate  610  through laser cutting. 
     In addition, in this embodiment, as shown in  FIGS. 15-16 , the first subsidiary plate  611 , the second subsidiary plate  612  and the third subsidiary plate  613  of the plate  610  do not have a common plane perpendicular to the second direction D 2 . Moreover, as mentioned above, the second thickness TK 2  is thinner than the first thickness TK 1  and the third thickness TK 3 . Therefore, a cross-section of the plate  610  parallel with the first direction D 1  and the second direction D 2  can form a “H” shape. Moreover, each of the finished products  650  in this embodiment also has a side surface in a “H” shape. 
     Reference is made to  FIGS. 17-18 .  FIG. 17  is a schematic view of a plate  610  according to a further embodiment of the present disclosure.  FIG. 18  is a schematic view of a plurality of finished products  650  cut from the plate  610  of  FIG. 17  by laser. In this embodiment, as shown in  FIGS. 17-18 , the first subsidiary plate  611 , the second subsidiary plate  612  and the third subsidiary plate  613  of the plate  610  do not have a common plane perpendicular to the second direction D 2 . Moreover, the second thickness TK 2  is thicker than the first thickness TK 1  and the third thickness TK 3 , i.e., the first subsidiary plate  611  and the third subsidiary plate  613  respectively correspond to the recessed portions P, such that a cross-section of the plate  610  parallel with the first direction D 1  and the second direction D 2  can form a “+” shape. Moreover, each of the finished products  650  in this embodiment also has a side surface in a “+” shape. In this way, the portion of each of the finished products  650  originally formed from the second subsidiary plate  612  can be snapped to the probe head as a stopping structure  651 . To be specific, each of the probes includes a probe tail formed from the first subsidiary plate  611 , a probe body formed from the second subsidiary plate  612  and a probe tip formed form the third subsidiary plate  613 . Through the laser cutting of the second subsidiary plate  612  along curved paths, the bending direction of the probes can be effectively predetermined, such that the condition that the probes touch and collide with each other is avoided. 
     Reference is made to  FIGS. 19-20 .  FIG. 19  is a schematic view of a plate  710  according to another embodiment of the present disclosure.  FIG. 20  is a schematic view of a plurality of finished products  750  cut from the plate  710  of  FIG. 19  by laser. As shown in  FIGS. 19-20 , the plate  710  is formed with recessed portions respectively at the first subsidiary plate  711  and the third subsidiary  713 . The recessed portions are respectively located at the two sides of the first subsidiary plate  711  and the third subsidiary  713 . Relatively, the second subsidiary plate  712  in the middle has a thicker thickness in the second direction D 2 . After being cut along the cutting path  714  by laser, the finished product  750  can be formed, such that the first subsidiary plate  711  is formed as the probe tail of a probe, the second subsidiary plate  712  is formed as the probe body of a probe, and the third subsidiary plate  713  is formed as the probe tip of a probe. The probe is bent around a predetermined direction. For example, the direction of bending is determined by the difference between the thickness and the width of the probe body, such that the bending direction of the probes can be effectively predetermined and the condition that the probes touch and collide with each other is avoided. 
     Reference is made to  FIGS. 21-22 .  FIG. 21  is a schematic view of a plate  810  according to a further embodiment of the present disclosure.  FIG. 22  is a schematic view of a plurality of finished products  850  cut from the plate  810  of  FIG. 21  by laser. As shown in  FIGS. 21-22 , the plate  810  is formed with recessed portions respectively at a single side of the first subsidiary plate  811  and the third subsidiary  813 . Relatively, the second subsidiary plate  812  in the middle has a thicker thickness in the second direction D 2 . After being cut along the cutting path  814  by laser, the finished product  850  can be formed, such that the first subsidiary plate  811  is formed as the probe tail of a probe, the second subsidiary plate  812  is formed as the probe body of a probe, and the third subsidiary plate  813  is formed as the probe tip of a probe. The probe is bent around a predetermined direction. For example, the direction of bending is determined by the difference between the thickness and the width of the probe body, such that the bending direction of the probes can be effectively predetermined and the condition that the probes touch and collide with each other is avoided. 
     Reference is made to  FIGS. 23-24 .  FIG. 23  is a schematic view of a plate  910  according to another embodiment of the present disclosure.  FIG. 24  is a schematic view of a plurality of finished products  950  cut from the plate  910  of  FIG. 23  by laser. As shown in  FIGS. 23-24 , the plate  910  is formed with recessed portions at the two sides of the second subsidiary plate  912 . Relatively, the first subsidiary plate  911  and the third subsidiary plate  913  have a thicker thickness than the second subsidiary plate  912  in the middle. After being cut along the cutting path  914  by laser, the finished product  950  can be formed, such that the first subsidiary plate  911  is formed as the probe tail of a probe, the second subsidiary plate  912  is formed as the probe body of a probe, and the third subsidiary plate  913  is formed as the probe tip of a probe. The probe is bent around a predetermined direction, such as bending around the third direction D 3 . The bending direction of the probes can be effectively predetermined and the condition that the probes touch and collide with each other is avoided. 
     The plate  910  is a composite material plate formed from, for example, a core material  922 , an inner cladding layer  924  formed around the core material  922  and a protective layer  926  formed on the surface of the inner cladding layer  924 . 
     In some embodiments, the core material  922  can be formed from nickel, tungsten, cobalt, palladium or alloys thereof, such as nickel-manganese alloy, nickel-cobalt alloy, nickel-palladium, or nickel-tungsten. 
     In some embodiments, the core material  922  can be formed from non-conductive material, such as silicon core material. 
     In some embodiments, the inner cladding layer  924  can be formed from conductive material. The conductive material can be copper, silver, gold or alloys thereof. 
     In some embodiments, the protective layer  926  can be rhodium, gold, platinum, palladium or alloys thereof, and can be formed from conductive metals such as palladium-cobalt alloy, which do not depart from the spirit and scope of the present disclosure. 
     Reference is made to  FIGS. 25-26 .  FIG. 25  is a schematic view of a plate  960  according to a further embodiment of the present disclosure.  FIG. 26  is a schematic view of a plurality of finished products  990  cut from the plate  960  of  FIG. 25  by laser. As shown in  FIGS. 25-26 , the plate  960  is formed with recessed portions at the two sides of the first subsidiary plate  961  and the third subsidiary plate  963 . Relatively, the second subsidiary plate  962  has a thicker thickness than the first subsidiary plate  961  and the third subsidiary plate  963  in the second direction D 2 . After being cut along the cutting path  964  by laser, the finished product  990  can be formed, such that the first subsidiary plate  961  is formed as the probe tail of a probe, the second subsidiary plate  962  is formed as the probe body of a probe, and the third subsidiary plate  963  is formed as the probe tip of a probe. The probe is bent around a predetermined direction, such as bending around the second direction D 2 . The bending direction of the probes can be effectively predetermined and the condition that the probes touch and collide with each other is avoided. 
     The plate  960  is a composite material plate formed from, for example, a core material  972 , an inner cladding layer  974  formed around the core material  972  and a protective layer  976  formed on the surface of the inner cladding layer  974 . 
     In some embodiments, the core material  972  can be formed from nickel, tungsten, cobalt, palladium or alloys thereof, such as nickel-manganese alloy, nickel-cobalt alloy, nickel-palladium, or nickel-tungsten. 
     In some embodiments, the core material  972  can be formed from non-conductive material, such as silicon core material. 
     In some embodiments, the inner cladding layer  974  can be formed from conductive material. The conductive material can be copper, silver, gold or alloys thereof. 
     In some embodiments, the protective layer  976  can be rhodium, gold, platinum, palladium or alloys thereof, and can be formed from conductive metals such as palladium-cobalt alloy, which do not depart from the spirit and scope of the present disclosure. 
     In conclusion, when compared with the prior art, the aforementioned embodiments of the present disclosure have at least the following advantages: 
     (1) The user can carry out laser cutting to the plate of different thicknesses. Through the simple and convenient method of laser cutting, the user can produce a finished product from the plate through laser cutting. By repeating the procedures as mentioned above, the user can efficiently produce a plurality of finished products from the plate through laser cutting. In this way, the production of the probes become more efficient and the cost is effectively reduced. 
     (2) Through the combination of the processing methods of non-laser cutting and the technique of laser cutting, the probes can be manufactured in a simple and easy manner. In addition, the application of laser cutting can decrease the error rate of processing between the probes. 
     (3) Since the distance between the third paths of laser cutting is larger than the second thickness of the plate, each of the finished products has a side surface in a “+” shape. When the two ends of each of the finished products are compressed towards each other, the central portion tends to bend about the predetermined direction. In this way, when a plurality of finished products are used as probes to be installed at the probe head, and the two ends of each of the finished products are compressed towards each other at the same time, the finished products will bend about the predetermined direction, such that the condition that the probes touch with each other because of bending due to compression is avoided. 
     Although the present disclosure has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein. 
     It will be apparent to the person having ordinary skill in the art that various modifications and variations can be made to the structure of the present disclosure without departing from the scope or spirit of the present disclosure. In view of the foregoing, it is intended that the present disclosure cover modifications and variations of the present disclosure provided they fall within the scope of the following claims.