TWM642475U - Detection device - Google Patents

Abstract

This case relates to a detection device, which is arranged on a circuit board and is used to detect wafers. The detection device includes a housing and an elastic conductor. The housing has a shaft hole that penetrates the housing. inside the hole, and includes a first connecting portion, a second connecting portion and an engaging portion, the engaging portion is located between the first connecting portion and the second connecting portion, and has a first outer diameter, wherein the first outer diameter of the engaging portion The diameter is equal to the inner diameter of the shaft hole, so that the engaging part of the elastic conductor is in contact with and engaged with the wall surface of the shaft hole.

Description

Detection device

This case relates to a detection device, especially a detection device with an elastic conductor.

Chips of integrated circuits are usually tested using a testing device, such as a chip testing socket (IC socket). The detection device is arranged on the circuit board and accommodates the detection chip, and the detection device includes an upper casing, a lower casing and an elastic conductor. The upper casing is in contact with the detection chip, and the lower casing is in contact with the circuit board. The elastic conductor is composed of a spring connector (pogo pin) or a shrapnel, and its maximum outer diameter is consistent, that is, the maximum outer diameter of the elastic conductor in each axial direction is equal, and the elastic conductor is arranged on the upper shell and the lower shell. In the shaft hole formed between the housings, the upper wall surface of the upper housing and the lower wall surface of the lower housing are respectively contacted and pressed to the two ends of the elastic conductor, so that the elastic conductor is fixedly clamped on the upper housing Between the body and the lower casing, the signal of the detection chip is transmitted to the circuit board through the elastic conductor. However, in order to fix the elastic conductor, the overall casing of the traditional detection device must have two parts, an upper case and a lower case, which makes the installation cost of the traditional detection device relatively high. In addition, the maximum outer diameter of the elastic conductor of the conventional detection device is smaller than the minimum inner diameter of the shaft hole formed between the upper case and the lower case, therefore, the shaft formed between the elastic conductor and the upper case and the lower case There is a gap between the holes, so that the elastic conductor cannot be in contact with the side wall of the upper casing or the side wall of the lower casing, resulting in high resistance of the elastic conductor and reducing the transmission speed of the signal.

Therefore, how to develop a kind of detecting device that overcomes the above-mentioned shortcoming is actually an urgent need at present.

The purpose of this case is to provide a detection device. The first outer diameter of the engaging part of the elastic conductor of the detection device is equal to the second inner diameter of the second accommodation area of the shaft hole of the casing, so that the engaging part contacts and engages It is fixed on the wall surface of the second accommodating area of the shaft hole of the casing 4. Therefore, the casing of the detection device of this case only needs to be a single part, and the wall surface of the shaft hole of the casing can be used to buckle the elastic conductor. The method of fixing the elastic conductor on the shell makes the installation cost of the detection device of the present case relatively low. In addition, since the engaging portion of the elastic conductor of the detection device of the present application is in contact with the wall of the shaft hole of the casing, the signal on the chip has more transmission paths, thereby increasing the speed of signal transmission of the detection device of the present application.

To achieve the above purpose, an embodiment of the present application is a detection device, which is arranged on a circuit board and used for detecting chips, wherein the detection device includes a casing and an elastic conductor. The housing has a shaft hole extending through the housing, wherein the shaft hole has an inner diameter. The elastic conductor is arranged in the shaft hole, and includes a first connecting portion, a second connecting portion and an engaging portion, the engaging portion is located between the first connecting portion and the second connecting portion, and has a first outer diameter, wherein the engaging The first outer diameter of the portion is equal to the inner diameter of the shaft hole, so that the engaging portion of the elastic conductor contacts and is engaged and fixed on the wall surface of the shaft hole.

Some typical embodiments embodying the features and advantages of the present application will be described in detail in the description in the following paragraphs. It should be understood that this case can have various changes in different aspects without departing from the scope of this case, and the descriptions and drawings therein are used as illustrations in nature rather than limiting this case.

Please refer to Figures 1 to 3, wherein Figure 1 is a schematic diagram of the structure of the detection device installed on the circuit board in this case, and Figure 2 is a schematic diagram of the exploded structure of the detection device, chip and circuit board shown in Figure 1, Fig. 3 is a partial cross-sectional structural schematic diagram of the detection device shown in Fig. 1 . As shown in Fig. 1, Fig. 2 and Fig. 3, the detection device 1 of this embodiment is arranged on the circuit board 2, and is used to accommodate the wafer 3 for detection, wherein the detection device 1 further takes the wafer 3 The signal is transmitted to the circuit board 2. The detection device 1 includes a housing 4 and an elastic conductor 5 . As shown in FIG. 2 , the housing 4 includes an upper surface 41 , a lower surface 42 , a receiving groove 43 and a plurality of shaft holes 44 . The upper surface 41 and the lower surface 42 of the casing 4 are arranged oppositely, and the casing 4 is arranged on the circuit board 2 by using the lower surface 42, the accommodating groove 43 is formed by the concave of the upper surface 41, and the bottom of the accommodating groove 43 431 is used to accommodate the wafer 3 .

For ease of description, only three shaft holes 44 and one elastic conductor 5 are shown in Fig. 3, and the number of shaft holes 44 is not limited to three as shown in Fig. A corresponding elastic conductor 5 is placed in one shaft hole 44 , but it can be clearly seen that a corresponding elastic conductor 5 can be placed in each shaft hole 44 . As shown in FIG. 3 , each shaft hole 44 runs through between the bottom 431 and the lower surface 42 of the accommodation groove 43 of the housing 4 , and the shaft hole 44 includes a first accommodation area 441 and a second accommodation area 442 . The first accommodating area 441 is adjacent to the bottom 431 of the accommodating groove 43 compared with the second accommodating area 442 , and the first accommodating area 441 has a first inner diameter r1. The second accommodating area 442 is adjacent to the lower surface 42 of the casing 4 compared with the first accommodating area 441, and the second accommodating area 442 has a second inner diameter r2, wherein the second inner diameter r2 is larger than the first inner diameter r2. diameter r1.

The elastic conductor 5 is disposed in the corresponding shaft hole 44 of the housing 4 and includes a first connecting portion 51 , a second connecting portion 52 , an engaging portion 53 , a first conducting portion 54 and a second conducting portion 55 . Please refer to FIG. 4 together with FIG. 2 and FIG. 3 , wherein FIG. 4 is a structural schematic diagram of the elastic conductor of the detection device shown in FIG. 1 . The first connection part 51 is made of a spiral conductive metal, and is adjacent to the bottom 431 of the accommodation groove 43, and is located in the second accommodation area 442 of the shaft hole 44. The first connection part 51 has a second outer diameter. 51a. The second connecting portion 52 is made of a spiral conductive metal, and is adjacent to the lower surface 42 of the casing 4, and is located in the second accommodating area 442 of the shaft hole 44. The second connecting portion 52 has a third outer diameter 52a. The engaging portion 53 is located between the first connecting portion 51 and the second connecting portion 52 and is located in the second accommodating area 442 of the shaft hole 44, and the engaging portion 53 has a first outer diameter 53a, wherein the engaging portion 53 The first outer diameter 53 a of the shaft hole 44 is equal to the second inner diameter r2 of the second accommodation area 442 of the shaft hole 44 , so that the engaging portion 53 contacts and is engaged with the wall surface of the second accommodation area 442 of the shaft hole 44 . The second outer diameter 51a of the first connecting portion 51 is smaller than the first outer diameter 53a of the engaging portion 53 , which means that the second outer diameter 51a of the first connecting portion 51 is smaller than the second diameter of the second accommodating area 442 of the shaft hole 44 . Therefore, the first connecting portion 51 does not contact the wall surface of the second accommodating area 442 of the shaft hole 44 , so that the first connecting portion 51 has an elastic restoring force. Similarly, the third outer diameter 52a of the second connecting portion 52 is smaller than the first outer diameter 53a of the engaging portion 53 , which means that the third outer diameter 52a of the second connecting portion 52 is smaller than the second accommodating area 442 of the shaft hole 44 Therefore, the second connecting portion 52 is not in contact with the wall surface of the second accommodating area 442 of the shaft hole 44 , so that the second connecting portion 52 has an elastic restoring force.

The first conductive part 54 and the second conductive part 55 are respectively located at both ends of the elastic conductor 5. In this embodiment, the first conductive part 54 is made of a linear conductive metal, and the first conductive part 54 is connected to the first The connecting portion 51, and the first connecting portion 51 is located between the first conductive portion 54 and the engaging portion 53, and at least part of the first conductive portion 54 is located in the second accommodating area 442, and at least another part of the first conductive portion 54 Protruding from the bottom 431 of the accommodating groove 43 , the elastic conductor 5 makes contact with the chip 3 in the accommodating groove 43 through the first conductive portion 54 . In this embodiment, the second conductive portion 55 is made of spiral conductive metal, the second conductive portion 55 is connected to the second connecting portion 52 , and the second connecting portion 52 is located between the second conductive portion 55 and the engaging portion 53 Between, at least part of the second conductive portion 55 protrudes from the lower surface 42 of the housing 4, so that the elastic conductor 5 is in contact with the circuit board 2 by the second conductive portion 55, and then the detection device 1 uses the elastic conductor 5 to place the wafer The signal on 3 is transmitted to the circuit board 2.

It can be seen from the above that the first outer diameter 53a of the engagement portion 53 of the elastic conductor 5 of the detection device 1 of the present case is equal to the second inner diameter r2 of the second accommodation area 442 of the shaft hole 44 of the housing 4, so that the engagement The part 53 is in contact with and engaged with the wall surface of the second accommodating area 442 of the shaft hole 44 of the housing 4. Therefore, compared with the shell of the elastic conductor of the traditional detection device, it must have two parts, the upper housing and the lower housing. In order to fix the elastic conductor, the housing 4 of the detection device 1 of this case only needs to be a single part, and the wall surface of the shaft hole 44 of the housing 4 can be used to buckle the engaging portion 53 of the elastic conductor 5, so that the elastic conductor 5 is fixed on the housing 4, so that the installation cost of the detection device 1 of this case is relatively low. In addition, since the engaging portion 53 of the elastic conductor 5 of the detection device 1 of this case is in contact with the wall of the shaft hole 44 of the casing 4, the signal on the chip 3 has more transmission paths, which improves the detection device 1 of this case. The speed at which the signal is transmitted.

Please refer to Figure 3 again, the detection device 1 may further include a conductive layer 6, taking the shaft hole 44 on the right side in Figure 3 as an example, the conductive layer 6 is attached to the wall of the shaft hole 44, and the conductive layer 6 is located Between the engaging portion 53 of 5 and the wall surface of the shaft hole 44, the elastic conductor 5 uses the conductive layer 6 to reduce the overall resistance, thereby increasing the signal transmission speed of the detection device 1 of this case.

In some embodiments, the first conductive portion 54 can be formed not only in a straight line, but also in a spiral shape. Of course, the second conductive portion 55 can also be formed in a linear shape besides a spiral shape. In the following, the first conductive portion 54 will be exemplarily described as a linear shape. Please refer to FIG. 5A together with FIG. 4 , wherein FIG. 5A is a partial structural diagram of the first conductive part of the elastic conductor of the detection device shown in FIG. 1 . As shown in the figure, the end of the first conductive portion 54 of the elastic conductor 5 in this embodiment that is in contact with the wafer 3 is a chamfered structure. In some embodiments, the end of the first conductive portion 54 of the elastic conductor 5 in contact with the chip 3 is a planar structure, as shown in FIG. 5B . In some other embodiments, the end of the second conductive portion 55 of the elastic conductor 5 that is in contact with the circuit board 2 can be a chamfered structure or a planar structure, and the detection device of this case can use different aspects of the above-mentioned conductive portion. structures to more precisely attach to wafers or circuit boards.

Certainly, there may be different forms when the conductive portion is in a spiral shape, and the second conductive portion 55 will be illustrated as an example in the following. Please refer to FIG. 6A together with FIG. 4 , wherein FIG. 6A is a partial structural diagram of the second conductive part of the elastic conductor of the detection device shown in FIG. 1 . As shown in the figure, the end of the second conductive portion 55 of the elastic conductor 5 in contact with the circuit board 2 has a cross-sectional structure. In some embodiments, the end of the second conductive portion 55 of the elastic conductor 5 in contact with the circuit board 2 is an inwardly folded structure, as shown in FIG. 6B . In some other embodiments, the end of the first conductive part 54 of the elastic conductor 5 that is in contact with the wafer 3 is a cross-sectional structure or an inwardly folded structure, and the detection device of this case utilizes the structure of different aspects of the above-mentioned conductive part to More precise connection to die or circuit board.

In some embodiments, the first conductive portion 54 of the elastic conductor 5 can be made of conical conductive metal, as shown in FIG. 7A . In some other embodiments, the first conductive portion 54 of the elastic conductor 5 may be formed of a crown-shaped conductive metal, as shown in FIG. 7B . In other embodiments, the first conductive portion 54 of the elastic conductor 5 can be made of conductive glue, as shown in FIG. 7C . Of course, the second conductive portion 55 of the elastic conductor 5 can also be made of conical or crown-shaped conductive metal or conductive glue, which will not be repeated here.

To sum up, the first outer diameter of the engaging portion of the elastic conductor of the detection device of the present case is equal to the second inner diameter of the second accommodation area of the shaft hole of the casing, so that the engaging portion contacts and is engaged and fixed on the The wall surface of the second accommodating area of the shaft hole of the casing 4, therefore, the casing of the detection device of this case only needs to be a single part, and the wall surface of the shaft hole of the casing can be used to buckle the engaging part of the elastic conductor. In this way, the elastic conductor is fixed on the casing, so that the installation cost of the detection device of the present application is relatively low. In addition, since the engaging portion of the elastic conductor of the detection device of the present application is in contact with the wall of the shaft hole of the casing, the signal on the chip has more transmission paths, thereby increasing the speed of signal transmission of the detection device of the present application.

1: Detection device

2: circuit board

3: Wafer

4: Shell

41: upper surface

42: lower surface

43: storage tank

431: bottom

44: shaft hole

441: The first storage area

r1: the first inner diameter

442:Second storage area

r2: second inner diameter

5: Elastic conductor

51: The first connecting part

51a: second outer diameter

52: The second connecting part

52a: third outer diameter

53:Catching part

53a: first outer diameter

54: The first conductive part

55: The second conductive part

6: Conductive layer

Fig. 1 is a structural schematic diagram of the detection device of this case arranged on the circuit board. Figure 2 is a schematic diagram of the exploded structure of the detection device, chip and circuit board shown in Figure 1 . Fig. 3 is a partial cross-sectional structural schematic diagram of the detection device shown in Fig. 1 . Fig. 4 is a schematic structural view of the elastic conductor of the detection device shown in Fig. 1 . FIG. 5A is a partial structural diagram of the first conductive portion of the elastic conductor of the detection device shown in FIG. 1 . FIG. 5B is a partial structural diagram of the first conductive part of another embodiment of the elastic conductor of the detection device of the present application. FIG. 6A is a partial structural diagram of the second conductive portion of the elastic conductor of the detection device shown in FIG. 1 . FIG. 6B is a partial structural diagram of the second conductive portion of another embodiment of the elastic conductor of the detection device of the present application. Figures 7A, 7B and 7C are structural schematic diagrams of elastic conductors in different embodiments of the detection device of the present application.

1: Detection device

4: Housing

42: lower surface

431: bottom

44: shaft hole

441: The first storage area

r1: the first inner diameter

442:Second storage area

r2: second inner diameter

5: Elastic conductor

51: The first connecting part

51a: second outer diameter

52: The second connecting part

52a: third outer diameter

53:Catching part

53a: first outer diameter

54: The first conductive part

55: The second conductive part

6: Conductive layer

Claims (10)

A detection device is arranged on a circuit board and is used to detect a chip, wherein the detection device comprises: a housing with an axis hole passing through the housing, wherein the axis hole has an inner diameter; and an elastic conductor , is arranged in the shaft hole, and includes a first connecting portion, a second connecting portion and an engaging portion, the engaging portion is located between the first connecting portion and the second connecting portion, and has a first An outer diameter, wherein the first outer diameter of the engaging portion is equal to the inner diameter of the shaft hole, so that the engaging portion of the elastic conductor contacts and is engaged with a wall surface of the shaft hole. The detection device as claimed in claim 1, wherein the first connecting portion has a second outer diameter, and the second outer diameter is smaller than the first outer diameter. The detection device as claimed in claim 1, wherein the second connecting portion has a third outer diameter, and the third outer diameter is smaller than the first outer diameter. The detection device as described in claim 1, wherein the elastic conductor further includes a first conductive part and a second conductive part, the first conductive part and the second conductive part are respectively located at both ends of the elastic conductor, and the first conductive part A connection part is located between the first conductive part and the engaging part, part of the first conductive part protrudes from the housing, the elastic conductor is in contact with the chip through the first conductive part, and the second connection A portion is located between the second conductive portion and the engaging portion, wherein part of the second conductive portion protrudes from the housing, and the elastic conductor contacts the circuit board through the first conductive portion. The detection device according to claim 4, wherein the first conductive part and/or the second conductive part of the elastic conductor are made of linear conductive metal, and one end of the first conductive part is in contact with the wafer And the end of the second conductive portion in contact with the circuit board has a planar structure or a chamfered structure. The detection device as claimed in claim 4, wherein the first conductive part and/or the second conductive part of the elastic conductor is made of a spiral conductive metal, and one end of the first conductive part is in contact with the wafer And the end of the second conductive portion in contact with the circuit board has a cross-sectional structure or an inwardly folded structure. The detection device as claimed in claim 4, wherein the first conductive part and/or the second conductive part of the elastic conductor are made of conical or crown-shaped conductive metal. The detection device as claimed in claim 4, wherein the first conductive part and/or the second conductive part of the elastic conductor are made of conductive glue. The detection device as claimed in claim 1, wherein the first connection part, the second connection part and the engaging part are all made of spiral conductive metal. The detection device according to claim 1, wherein the detection device further comprises a conductive layer attached to the wall of the shaft hole, and the conductive layer is located at the engaging portion of the elastic conductor and the shaft hole between walls.

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