JPH01105483A - Socket for wiring substrate - Google Patents

Abstract

PURPOSE:To allow the connection with high density to the optional position on a wiring substrate by providing a socket structure using the flexible wiring substrate as a connecting means to a wiring substrate to be measured. CONSTITUTION:A substrate to be measured is placed in coincidence with a substrate positioning frame 8 in a pedestal insulating body 2, an upper cover insulating body 1 is pressed from above so that a reference hole 16 matches with a reference pin 17 in the pedestal insulating body 2, and the upper cover is fixed to the pedestal with hanging claw components 15. At this time, a contact land 4 and a contact piece 7 on a flexible substrate 3 are brought into contact with the portions necessary for the probing contact on the substrate to be measured and connected to an external inspecting device via an external lead terminal. Connection can be made with high density to the optional position on the substrate to be measured regardless of its size.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a socket for wiring boards, and more particularly to a socket for testing high-density wiring boards used in hybrid integrated circuit devices and the like.

[Conventional technology]

Conventionally, when inspecting a high-density wiring board used in a hybrid integrated circuit device, etc., the connection means with the required inspection equipment is as shown in FIG.
One method uses what is called a probe card, in which a probe 20 made of a material such as a tongue stage processed to a diameter of 0 μm is fixed on a printed wiring board 19 with a probe fixing base 21, and the other uses a probe card with a spring inside as shown in FIG. A method is used in which a contactor 7 having a mechanism is fixed through an insulating substrate 22 made of an acrylic plate or the like, and a jig is manufactured and used in which a wiring 23 is connected to the contactor 7.

In both cases, the characteristics of the substrate to be measured 5 on the stage 24 are measured.

[Problem that the invention seeks to solve]

In the conventional connection means mentioned above, first of all, in the case of the former method,
In terms of measurement reliability, it is necessary to keep the stylus pressure on the contact area constant, and the length from the probe fixing position on the printed wiring board to the tip of the probe must be kept constant. Although it is possible to perform blowing with high precision and high density near the periphery of the wiring board, it has the disadvantage that as the wiring board becomes larger, it becomes impossible to blow into any arbitrary position in the center.

In addition, in the case of the latter method, since the structure has a spring mechanism inside the contact, it is possible to blow to any position regardless of the size of the board to be measured. There is a limit to how thin the contacts themselves can be, and adjacent contacts must be placed a certain distance apart to ensure insulation, which limits their use in high-density wiring boards. It has the disadvantage that there is

In addition, both methods require a separate wiring board positioning mechanism, which increases the overall scale and costs, and when evaluating, it is difficult to easily and compactly connect a large number of wiring boards at once. There was a strong desire to implement a socket method due to the necessity.

[Differences between the invention and the prior art]

In contrast to the conventional connection means described above, the present invention has a socket structure using a flexible wiring board as a connection means to the wiring board to be measured. By providing an abutment land at a position corresponding to the required probe abutment area, high-density probing can be performed at any position on the wiring board. In addition, for wiring connections to external measurement equipment, a contact terminal that also serves as an external lead terminal provided on the board socket pedestal is attached to the external wiring draw-out land on the flexible wiring board provided on the outside of the measured board area. This is easily possible by making contact with the wiring board, and therefore, it has a configuration that allows high-density connection to any position on the wiring board regardless of the size of the board to be measured.

[Means to solve problems]

The socket for a wiring board of the present invention has a contact land formed as the socket upper lid portion corresponding to a portion of the upper surface of the board to be measured where the probe contacts, and a contact land that extends from the contact land to the area of the board to be measured. A flexible wiring board with patterned wiring is positioned and attached at a predetermined position up to the external wiring draw-out part provided on the outer side, and has a storage positioning part for the board to be measured as a socket pedestal part, and at least A contact that makes contact is inserted into a position corresponding to the external wiring draw-out part on the flexible wiring board, and its leg part protrudes from the lower part of the socket pedestal part to serve as an external lead terminal. The base portions have a structure in which they share positioning portions that fit into each other.

[Example 1] Next, the present invention will be explained with reference to the drawings.

FIG. 1(a) is a plan view of the upper lid portion of Example 1 of the present invention, and FIG. 1(b) is a plan view of the pedestal portion.

FIG. 2 is a longitudinal cross-sectional view of the combination of the first embodiment. Moreover, FIG. 3 is a sectional view of the flexible wiring board used in this example.

51 In Embodiment 1, the flexible wiring board 3 positioned at a predetermined position is fixed to the upper lid insulating base 1,
A cushioning material 6 such as a rubber mat is attached to the contact area 9 with the substrate to be measured 5 and the insulating base 1 . In addition, the flexible wiring board 3 has contact lands 4 such as gold bumps provided on a flexible board 10 made of polyimide film or the like, corresponding to the necessary areas for the probe to contact the substrate 5 to be measured, and contact lands 4 such as gold bumps. 4 to an external wiring lead-out land 12, and an insulating film 13 is formed on the outside except for the contact land portion.

The pedestal insulating base 2 has a storage and positioning frame 8 for the substrate to be measured 5, and a contactor 7 that makes contact with the required probe contact area on the lower surface of the substrate to be measured 5, and an upper lid portion. A contact 7 is fitted and brought into contact with an external wiring draw-out land 12 on a flexible wiring board 3 on an insulating base, and its legs protrude from the lower part of the insulating base to serve as an external lead terminal. The contact 7 has a spring structure. Further, a claw part 15 for mounting and fixing the upper lid insulating base 1 is attached to the pedestal insulating base 2, and a reference pin 17 and a reference hole 1 are fitted to the pedestal insulating base 2 and the upper lid insulating base 1, respectively.
6 is provided.

To explain the operation of a board socket having such a structure, first place the board 5 to be measured so that it aligns with the board positioning frame 8 in the insulating base 2 of the pedestal, and then place the insulating base 1 of the upper lid part so that the reference hole 16 is aligned with the pedestal. The upper lid part is held down from above so as to fit into the reference pin 17 in the insulating base 2, and the upper lid part is fixed to the pedestal part with the claw parts 15. At this time, the contact lands and contacts on the flexible board are brought into contact with the parts of the board to be measured that require probe contact, and are connected to the external inspection equipment via the external lead terminals. Become.

Furthermore, in FIG. 3, the conductive wiring pattern 11 is used on only one side of the flexible substrate 100, but in view of the spirit of the present invention, through holes are provided in the flexible substrate as shown in FIG. It may be used as a conductor wiring pattern, or even as a multilayer structure.

[Embodiment 2] FIG. 5 is a plan view of Embodiment 2 of the present invention, and FIG. 6 is a longitudinal cross-sectional view of the combination of Embodiment 2.

In the second embodiment, the individual structures of the upper lid insulating base 1 and the pedestal insulating base 2 are the same, but the upper lid and the pedestal are connected at one end by a connecting shaft 18 that shares a rotation axis. It becomes.

To explain the operation of a board socket having such a structure, first, place the board to be measured 5 in alignment with the board positioning frame 8 in the pedestal part insulating base 2, and then place the top cover insulating base 1 connected with the connecting shaft. Rotate and press from above so that the reference hole 16 fits into the reference pin 17 in the insulating base 2 of the pedestal part, and fix the upper lid part to the pedestal part with the claw parts 15. At this time, the contact lands and contacts on the flexible board are brought into contact with the areas on the board to be measured where the probe needs to be contacted, and are connected to external inspection equipment via external lead terminals. . In this embodiment, since the upper lid part and the base part are connected, there is an advantage that it is easy to handle as one socket.

〔Effect of the invention〕

As explained above, in the present invention, as a socket for a board, a flexible wiring board is attached to the upper lid part, and a contact land is provided at a position corresponding to the required probe contact area of the board to be measured, and a flexible wiring board is attached to the pedestal part. The structure has a contact that also serves as an external lead terminal at a position corresponding to the external wiring drawer on the board, making it easy to use any measurement board regardless of the size of the board to be measured. This has the effect of enabling high-density connections depending on the location.

[Brief explanation of the drawing]

FIG. 1(a) is a plan view of the upper lid portion of Embodiment 1 of the present invention. FIG. 1(b) is a plan view of a pedestal portion according to a tenth embodiment of the present invention. FIG. 2 is a longitudinal cross-sectional view of the combination of the first embodiment. FIG. 3 is a sectional view of the flexible wiring board shown in FIG. 1(a). FIG. 4 is a sectional view of another embodiment of the flexible wiring board. FIG. 5 is a plan view of Embodiment 2 of the present invention. FIG. 6 is a vertical cross-sectional view of the combination of the second embodiment. 7 and 8 are structural diagrams of conventional embodiments, respectively. l...Top lid insulating base, 2...Pedestal insulating base, 3...Flexible wiring board, 4.
.... Land for contact, 5 .... Board to be measured,
6...Buffer material, 7...Contact, 8...
... One board positioning frame, 9... Contact area, 1
0... Flexible board, 11... Conductor pattern wiring, 12... External wiring extraction land, 13... Insulating film, 14... Through hole, 15...Claw parts, 16...
Reference hole, 17...Reference pin, 18...
Connection shaft, 19...Printed wiring board, 20...
...Probe, 21...Probe fixing base, 22...
...Insulating board, 23...Wiring, 24...
... Loading table. Agent Patent Attorney Shinsuke Uchihara＼ N1

Claims (1)

[Claims] A contact land is formed on the first insulating base corresponding to the part of the top surface of the substrate to be measured that requires probe contact, and an external contact land is formed from the contact land to the outside of the area of the substrate to be measured. A flexible wiring board with patterned wiring is attached to a predetermined position up to the wiring draw-out part, and the second insulating base has a storage positioning part for the board to be measured, and at least the part on the flexible wiring board A contact that makes contact is inserted into a position corresponding to the external wiring draw-out part, and the first insulating base and the second insulating base share a positioning part that fits into each other. A wiring board socket featuring: