JPH07221143A - Probing device - Google Patents

Abstract

PURPOSE:To provide a probing device, wherein even in the case where there is not a physical space on a probe card, a storage element can be installed. CONSTITUTION:This probing device is provided with a probe card 10, which comes into contact electrically with an object to be inspected to measure the electrical characteristics of the object to be inspected, and a probe card holding jig 30 for holding and fixing the card 10 at a measurement position to oppose to the object to be inspected in the probing device. A storage means 31 for storing information for measuring the object using the card 10 and a connection means 33 for connecting a readout and write path of the information in the means 31 with the means 31 are installed on the jig 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to electrical characteristics of an object to be inspected, such as a semiconductor wafer having a plurality of semiconductor devices formed thereon or a glass substrate having a pixel driving circuit constituting a liquid crystal display device formed thereon. Regarding the probe device for measuring
In particular, it relates to a probe card holder in a probe device and a probe card holding structure.

[0002]

2. Description of the Related Art As is well known, many semiconductor devices are formed on a semiconductor wafer by using a precision photo transfer technique or the like.
After this, the wafer is cut into individual semiconductor devices. In such a semiconductor device manufacturing process, conventionally, a probe device is used to perform a test determination of the electrical characteristics of a semi-finished semiconductor device in a semiconductor wafer state, and the result of this test measurement is determined to be a good product. It is common practice to send only those items to the subsequent process such as packaging to improve productivity.

The probe device includes a wafer mounting table which is movable in the X, Y, Z, and θ directions, and a large number of probes corresponding to the electrode pads of the semiconductor device are mounted on the wafer mounting table. A probe card with needles is fixed by a suitable probe holder. At the time of measurement, an object to be inspected such as a semiconductor wafer is mounted and fixed on the wafer mounting table, the wafer mounting table is driven, a probe needle is brought into contact with the electrode of the semiconductor device, and a tester is used through the probe needle. It is configured to make test measurements.

In such a probe device, the contact between the probe card and the tester has recently been made at an electrode land portion connected by an electrical lead wire corresponding to each probe needle arranged on the probe card. It is performed by a pogo contact that presses an elastically biased contact pin (pogo pin). By the way, in order to obtain contact between, for example, 100 probe needles and a tester at the time of inspection, if a pressure of about 10 g per probe needle is applied, it is necessary to apply a pressing force of 1 kg to the entire probe card. is there.

In particular, with the high integration of semiconductor devices such as CPUs of supercomputers, the number of probe needles required to inspect one chip tends to increase, and recently, 1000 to 2000 probe needles are erected. The installed probe card has come to be required in the semiconductor manufacturing industry. They may be erected in a space of, for example, 2 cm × 2 cm. In such a case, a pressing force of 10 kg to 20 kg is applied to the entire probe card, so that the probe card is distorted in the Z direction according to the pressing force, and the probe needle has a uniform pressure and a uniform parallelism. It becomes impossible to contact the object to be inspected, and precise inspection cannot be performed. Therefore, measures have been taken to enhance the distortion resistance of the probe card itself, but there is a limit to that as well, and some measure is required.

Further, in performing the probe inspection, it is preferable to manage information unique to each probe card, such as the product type number and the number of times of use, for each probe card by using a storage means or the like. However, as the high integration and high density of semiconductor wafers progresses as described above, thousands of probe needles are arranged correspondingly on the probe card composed of the printed circuit board, and the wiring area corresponding to the probe needles and It is necessary to secure a land area for contact with the tester, but in each probe card where 1000 to 3000 probe needles are erected and electrodes for securing electrical lead wires of those probe needles are arranged. It is difficult to find room for arranging the above storage means.
Therefore, there is a demand for a measure to move the storage means integrally with the probe card and to arrange the storage means at a distance that does not adversely affect each other.

[0007]

Therefore, the present invention has been made in view of the above problems of the conventional probe apparatus, and the purpose thereof is to store the information peculiar to the card in each probe card. Even if there is no physical space to be used, or if you want to avoid mixing signal lines and storage elements that pass through the probe card, you can store and manage information for each probe card. An object of the present invention is to provide a probe device having an improved holder for a probe card and a structure for holding a probe card.

Further, another object of the present invention is to reinforce the strength of the probe card and avoid the distortion in the Z direction even when a pressing force is applied to the probe card during measurement. Another object of the present invention is to provide a probe device having a new and improved probe card holder and a probe card holding structure.

[0009]

In order to solve the above problems, the present invention provides a probe card for electrically contacting an object to be inspected to measure its electrical characteristics, and a probe device for the probe card. It is applied to a probe device comprising a probe card holder for holding and fixing the object to be inspected in a measurement position facing the object to be inspected, and the probe card holder is for measuring the object to be inspected using a probe card. And a connecting means (for example, an electrode and a pogo contact capable of contact and separation by pogo pin means) for connecting the information reading / writing path of the storing means and the storing means. It is characterized by having.

Further, the probe card can be provided with a guide means for guiding the probe needle for measuring the electrical characteristic of the inspection object to the inspection object. The probe card holder is engaged with the guide means at a first portion for supporting the probe card upward in the peripheral portion of the back surface of the probe card and the engaging portion provided in the peripheral portion of the guide means of the probe card. And a second part for supporting the probe card upwards.

Further, the probe card holder further has a third portion around the first portion for supporting the probe card upward, and the storage means is provided on the surface of the third portion. can do.

[0012]

According to the first aspect of the present invention, the storage element storing the information for measuring the object to be inspected by using the probe card is moved integrally with the probe card, and the storage elements adversely affect each other. Since it is installed in the probe card holder so that there is no physical restriction on the placement of the probe land on the probe card or the electrode land that secures the electrical leads of the probe needle, there is no physical restriction on the probe card through the connecting means. It is possible to install. Further, it is less susceptible to noise and crosstalk from the probe card, and it is possible to operate the storage element accurately and to stably operate the measurement signal processed at high speed via the probe needle. Furthermore, when the probe needle tip of the probe card is replaced, only the probe card needs to be replaced, and the probe card holder can be reused.

According to the second aspect of the present invention, even when pressure is applied to the probe card from the upper side to the lower side by pogo pins or the like at the time of measurement, the probe card means is provided in the peripheral portion and the central portion of the back surface of the probe card. Since it is possible to support the above by the probe card holder,
The load applied to the probe card means is absorbed and dispersed by the probe card holder, and the distortion of the probe card means itself is reduced. Therefore, it is possible to bring the probe needle into contact with the object to be inspected with a uniform pressure and a uniform flatness.

According to the third aspect of the present invention, distortion of the probe card means is prevented and the memory element is installed at a place other than the probe card means, so that the arrangement of the probe needles and lands is physically restricted. Instead, it can be done freely on the probe card means. Further, it is less susceptible to noise and crosstalk from the probe card means, and the storage element can be operated accurately. In addition, if the probe card means fails,
Only the probe card means needs to be replaced, and the storage element itself can be reused.

The present invention can be preferably applied to a probe device using a pogo contact, and by using the pogo contact, the connection and disconnection of the probe card and the tester can be easily performed. Therefore, it is possible to cope with automation of the probe device such as automatic transfer and automatic fixing of the probe card and its holder.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A probe card holder and a probe card holding structure constructed according to the present invention will be described below with reference to the accompanying drawings. In each drawing, the same members are designated by the same reference numerals to simplify the description. First, in order to facilitate understanding, the configuration and operation of the entire probe apparatus will be schematically described with reference to FIG.

In FIG. 1, a main stage 101 is provided substantially at the center of the probe device 100. A mounting table 103 for mounting and fixing the semiconductor wafer 102 is attached to the main stage 101. The mounting table 103 is a Z-direction and θ-direction stage 103.
A, X-direction stage 103B and Y-direction stage 10
3C, and is movable on the main stage 101 in a desired direction. A probe assembly 104, which will be described later, is provided above the mounting table 103.
Are provided so as to face the semiconductor wafer 102. Although not shown, an alignment unit is provided on the front side of the center of the probe device 100. This alignment unit is provided with a camera or the like as an image recognition device for alignment, and when performing alignment, the mounting table 103 is moved to a position below the camera.

On the right side of the probe device 100 in the drawing, an autoloader 1 for loading and unloading the semiconductor wafer 102.
05 is arranged and the probe assembly 10 is provided on the left side of the drawing.
Exchanges 106 for exchanging 4 are respectively provided.

In the autoloader 105, a wafer cassette 107 that accommodates a large number of semiconductor wafers 102 at predetermined intervals in the vertical direction is replaceably arranged on a cassette mounting table 108. This wafer cassette 107
A loader stage 109 that is movable in a horizontal plane and a wafer handling arm 110 that can be driven by a Y-direction drive mechanism and a Z-direction elevating mechanism (not shown) are provided between the above and the mounting table 13.

When the semiconductor wafer 102 is subjected to the probe inspection by the probe assembly 104, the semiconductor wafer 102 is transferred to the vicinity of the mounting table 103 by the loader stage 109 and mounted on the mounting table 103 by the handling arm 110. Fixed. Then, a probe needle described later of the probe assembly 104 positioned at a predetermined position is brought into contact with a predetermined contact point on the semiconductor wafer, an inspection result is transmitted to the tester 60 via a pogo pin ring 50 described later, and the tester 60 is tested. The quality of the inspected object is determined in. After the inspection, the semiconductor wafer 102 is transferred to the loader stage 10 by the handling arm 110.
9 is moved again to the wafer cassette 9 and is transferred to the wafer cassette 107 by the loader stage 109.

In the exchange 106, the probe card 1
0 is mounted on the probe card holder 30 to attach the probe card assembly 104 to the storage shelf 11 in the storage chamber 110.
The probe card assembly 104 is housed in a plurality of units at a predetermined interval in the vertical direction, and can be replaced with the probe card assembly 104 installed in the main body of the probe apparatus 100 as needed.

If desired, a monitoring device 112 such as a microscope or a television camera can be installed on the upper part of the tester 60 arranged on the upper part of the probe device 100. It is also possible to configure so as to monitor the semiconductor wafer located below and the tip of the probe needle of the probe card 10 through an opening formed in the central portion of the probe card holder 10 and the probe card holder 20. In addition, as another method of monitoring the probe needle, an upward camera may be provided on a mounting table on which an object to be inspected is mounted for alignment.

Next, the structure of the probe card 10 for probe-inspecting an object to be inspected will be described with reference to FIGS. 2, 3, and 4. The probe card 10
A printed board 11 having a substantially disc shape, a probe needle 12, and a guide portion 1 for guiding the probe needle 12 to an object to be inspected.
It consists of three. As shown in FIG. 2, the probe needle 12 is made of a conductor such as gold (Au) or tungsten (W), and the portion 12A is arranged in a direction perpendicular to the object to be inspected. As will be described later, the tip 12B of the needle moves minutely in the horizontal direction on the mounting table on which the substrate to be inspected is mounted, so that the oxide film on the surface of the semiconductor wafer is scratched and the predetermined contact point P is reached.
Is configured to contact. The probe needle 12 is bent substantially parallel to the upper surface of the board toward the outer peripheral portion of the board at a portion 12C protruding from the upper surface of the printed board 11.
It is embedded in the printed circuit board 11 at a point 19 and wired so as to be connected to a land 20 for a pogo contact which will be described later. In the illustrated example, the probe needle is 1
Although it is embedded in the probe card 10 in 2D, it is also possible to provide wiring on the back side of the probe card 10 to facilitate the work.

Printed circuit board 1 of the probe card 10
The guide portion 13 for guiding the probe needle 12 arranged on the back surface of the first block includes the upper block 13A and the intermediate block 1
3B and the lower block 13C. A needle fixing resin 14 is arranged in the center of the upper block 13A, and the needle fixing plate 1 is provided on the lower surface of the needle fixing resin 14.
5 is attached. The needle fixing plate is provided with a hole corresponding to the probe needle, and the needle is positioned and fixed in the hole.

The cavity portion 1 is provided at the center of the intermediate block 13B.
6A is provided, and an upper guide plate 17 is attached to the lower end of the cavity portion 16A. This upper guide plate 1
8 also has a hole corresponding to the probe needle, and the needle is positioned and fixed in the hole. The probe needle 12 is an object to be inspected such as a semiconductor wafer, as shown in FIG. 3B, between the cavity portion 16A provided between the needle fixing plate 15 and the upper guide plate 17. As the tip portion 12B of the probe needle is pressed by 102, the tip portion 12B rises vertically, and the body of the probe needle between the needle fixing plate 15 and the guide plate 17 is elastically bent. .

A cavity portion 16B is also provided in the center of the lower block 13C, and a lower guide plate 18 is attached to the lower end of the cavity portion 16B. The lower guide plate 18 also has a hole corresponding to the probe needle, and the needle is positioned and fixed in the hole. The probe needle is located between the upper guide plate 17 and the lower guide plate 18, and as shown in FIGS. 3 (a) and 3 (b), the tip of the probe needle is attached to the inspection object 102 such as a semiconductor wafer. 12B
As is pressed, the upper and lower guide plates 17 and 18 guide and move up and down.

In the above-mentioned example, the description was made with reference to a so-called vertical needle type probe card in which the probe needles are erected in the vertical direction, but the present invention is not limited to this structure.
The present invention, like the conventional device, contacts the object to be inspected with the tip of the probe needle in which the tungsten needle is arranged obliquely to the object to be inspected from the front surface or the back surface of the card.
It is also applicable to a so-called horizontal needle type probe card and a holder for the probe card. Furthermore, the present invention can be similarly applied to a rubber type probe card using a conductive rubber, or a membrane type probe card using a bump film, and a holder thereof.

The probe card 1 configured as described above
Fig. 4 shows a plan view of No. 1 for logic and highly integrated ASI.
When a semiconductor is highly integrated like a C chip or a CPU chip of a supercomputer, or when it is required to simultaneously contact a plurality of 16M DRAM chips, the probe card 11 has a large number of probes, for example, thousands of probes. Needle 1
2 are arranged. Therefore, the surface area of the probe card 11 is concentric with the opening area 21 as the center, and the needle stand area (A) in which the probe needle 12 is erected substantially perpendicular to the semiconductor wafer, and the portion 12C of the probe needle 12 is provided.
The wiring area (B) in which the wires are wired and the pad area (C) in which the land 20 for the pogo contact are arranged are so wide that there is no room for a vertical cone. Therefore, it is difficult to provide the currently used probe card 11 with a physical space for arranging a storage element, which will be described later, on the probe card 11. Further, the measurement signal transmitted through the highly integrated probe needle is extremely sensitive to noise other than signal components, and it is required that the signal lines used for communication between probe devices be separated from each other as much as possible. There is.

In particular, in a logic circuit or a memory of 16 MDRAM or later, the operating voltage tends to decrease from 5 V in the past to 2.4 V or less, for example, and the threshold level tends to decrease, and a plurality of these circuits and elements are arranged. There is a strong demand for noise countermeasures for the inspection of the inspection object. Therefore, in the present invention, as shown in FIGS. 5 and 6, the above problem is solved by providing the probe card holder 30 with the region 32 for installing the memory element 31. In this way, the memory element 31 is connected to the probe card 1
By installing it in an area different from 0, the problem of the physical constraint as described above is solved, and at the same time, the storage element 31 and conversely the measurement signal of the object to be inspected are protected against noise generated from the probe card 10. It became possible to do it. Further, even if the probe card 10 fails, it is not necessary to discard the storage element 31 that is still usable as in the conventional case, so that the storage element 31 can be reused.

The memory element 31 is mounted and fixed on the area 32 through an appropriate insulating material 34. By thus interposing the insulating material 34, a metal material having rigidity, for example, aluminum, in order to reduce the deformation of the probe card due to the stress generated when the probe tip of the probe card comes into contact with the substrate to be measured. And S
It is possible to electrically insulate and protect the storage element 31 from the probe card holder 30 made of a conductive material such as US.

As shown in FIG. 6, the storage element 31 can be composed of, for example, two elements 31A and 31B, and preferably a plurality of EEPROMs (ELECTRICALLY ERASABLE PROG) according to the amount of data to be stored.
RAMMABLE READ ONLY MEMORY) is used as an element capable of writing and reading stored data. One ROM 31A contains various information about the probe card 10 fixed to the probe card holder 30 set before the inspection, and the other ROM 31B contains various information about the probe card 10 rewritten at each inspection. Is stored.

As these pieces of information, Z of the mounting table 103 is used.
In addition to Z-direction movement data for controlling movement in the direction, for example, the number of contacts (total and trip), relative position of the needle, probe card serial number, probe card type, pin number, multi number, multi location, Needle work execution timing and the number of contacts, overdrive tolerance, slide execution after contact,
This includes needle testing, alarms and rejects for defective probe cards.

Further, an appropriate number of lands 33 for pogo contacts, which will be described later, are arranged on the upper surface of the memory element 31, and a terminal having pogo pins corresponding to each land 33, which will be described later, is pressed to press the pogo contacts. It is configured to make electrical contact with each other and to transmit / receive data to / from the controller 90.

Further, as shown in the block diagram of FIG. 7, the storage element 31, for example, an EEPROM (ELECTRICALLY E
It is also possible to interpose between the RASABLE PROGRAMMABLE READ ONLY MEMORY) and the controller 90, relay means 93 for ON / OFF controlling the signal and the + 5V power supply line 92. With this configuration, when the EEPROM is not accessed, the relay 93 can be set to OFF so that the signal of the probe card does not pick up noise. As the relay means 93,
In addition to mechanical relay means, it is also possible to employ a relay circuit composed of transistors and the like.

Next, the structure of the probe card holder 30 will be described. As shown in FIG. 5, a probe card holder 30 according to the present invention has a peripheral region of the probe card 10, preferably a land 20 for pogo contact arranged, and a region to which a load is applied by a pogo pin ring 50 described later at the time of inspection, That is, it has a region 35 that supports the pad region (C) upward from the back surface. Probe card 10
Can be fixed to this region 35 by using a suitable fixing member (not shown) such as a screw.

A region 32 for mounting the above-mentioned memory element 31 is provided on the outer periphery of this region. This area 3
5 and the flatness of the region 32 are such that when the probe card 10 and the memory element 31 are mounted and fixed, the level line on the upper surface of the land 20 for the pogo contact on the probe card 10 and the pogo contact on the memory element 31. It is adjusted so that the level line on the upper surface of the land 33 is substantially on the same plane. With this configuration, when the pogo pin ring 50 and the terminal 70 are driven to be pressed downward as described later, the probe card 10 can be operated by a single operation.
It is possible to simultaneously make two electrical contacts between the pogo pin ring 50 and the terminal 70 and the storage element 31.

Further, according to the present invention, since the stress applied to the probe card 10 by the pogo pin ring 50 can be absorbed by the region 35 of the probe card holder 30, the stress distortion of the probe card 10 is reduced. It is possible. As a result, even when the needle tip portion 13C requires parallelism of, for example, about ± 10 μm, the tip portion 13C of the probe needle 12 has sufficient parallelism with the surface of the semiconductor wafer 102 and a uniform pressure. Since it is possible to make contact with each other, highly accurate probe inspection can be performed.

Further, the probe card holder 3 shown in FIG.
Reference numeral 0 has a region 36 that curves downward in a bowl shape from the periphery of the probe card 10 to the central portion. The bowl-shaped region 36 is arranged on the same plane as the bottom surface of the lower block 13C of the guide portion 13 and is continuous with the bottom region 37. According to the present invention, the protruding portion 38a is provided around the intermediate block 13B of the guide portion 13,
The protruding portion 38a of the guide portion is engaged with the bottom region 37 of the probe card holder 30 and is fixed by a fixing member 39a such as a screw. With this configuration, the pogo pin ring 50 can be used during inspection.
It becomes possible to support the stress dispersed in the central portion of the probe card 10 upward when the probe card 10 is pressed downward, and the probe card 10 is supported against the stress by the pogo pin ring 50 together with the area 35. It is possible to prevent the stress strain from occurring.

Further, according to the present invention, a plurality of shoulder portions 38 are provided in the outer peripheral area of the area 32. At the time of operation, by engaging the shoulder portion 38 with a predetermined position of the probe device 100, the probe card holder 3
The positioning of 0 can be performed, and the probe card holder 30 itself can be supported and fixed to the probe device 100 against the stress caused by the pogo pin ring 50.

The probe card 1 configured as described above
0 and the probe card holder 30 are placed on the top plate 80 on the upper surface of the housing of the probe device 100 during measurement.
At this time, according to the present invention, the first engagement surface 81 of the probe card holder 30 and the first engagement surface 82 of the top plate 80 are processed into a smooth surface with high accuracy, and the probe card holder is held. The second engagement surface 83 of the tool 30 and the second of the overhanging portion.
The engaging surface 84 is also processed into a smooth surface with high accuracy. Thus, the parallelism of the first engaging surfaces 81, 82 and the second engaging surfaces 83, 84 can be achieved with high accuracy, respectively, so that the tip 12B of the probe needle 12 can be attached to the object to be processed. It is possible to perform positioning with uniform pressure and high parallelism. Therefore, the smooth surface treatment of the other parts can be omitted, and the number of manufacturing steps of the device can be reduced.

Further, recently, the semiconductor wafer 102 is heated to a temperature of, for example, about 60 ° C. to 150 ° C. by a heater (not shown) built in the mounting table 103, and the electrical characteristics of the IC chip on the semiconductor wafer 102 in a high temperature state. The method of doing is being implemented. On the contrary, in the case of cooling, the cooling water can be circulated through the mounting table to cool the semiconductor wafer to −10 ° C. In the case of such measurement, the probe card 10 and the probe card holder 30 are thermally expanded or contracted by the radiant heat from the heated or cooled wafer or the heat conduction from the needle tip, and aluminum, SUS, etc. having particularly high heat conductivity are used. Stress concentration due to thermal expansion or thermal contraction occurs in the probe card holder 30 made of the above material, the probe card holder 30 itself is thermally deformed, the parallel balance of the tip 13C of the probe needle is lost, and it is preset at room temperature. The amount of overdrive cannot be added, and accurate measurement may not be possible.

Therefore, in the probe card holder 30 according to the present invention, as shown in FIG. 6, heat is provided by providing holes or grooves 39 in the circumferential direction of the bottom region 37 and the bowl-shaped region 36. It is possible to absorb stress concentration caused by expansion or thermal contraction as elastic deformation in the hole or groove. As a result, the thermal displacement of the probe card holder 30 is reduced, and the amount of thermal displacement of the contact means such as the probe needle of the probe card 10 in the Z direction can be suppressed to a low level, so that a predetermined overdrive amount is maintained. Then, since it becomes possible to contact the object to be inspected, accurate probe inspection can be performed.

In the example shown in FIG. 6, the stress concentration is alleviated by forming holes or grooves in the probe card holder 30, but in addition to this, thermal displacement applied to the probe card holder 30. In order to compensate for the above, the probe card holder 30 may be configured by combining materials having different thermal expansion coefficients to alleviate stress concentration. For example, the probe card holder 30 has a multi-layered structure, and the probe card holder 30 is displaced so as to compensate for stress concentration due to heat conduction due to a bimetal effect by adopting a material having a high coefficient of thermal expansion in the circumferential direction of the upper layer. It is also possible to configure so that it is made to.

In the example shown in FIG. 5, the structure of the probe card holder 30 fixed to the protruding portion 38a formed below the middle block 13B of the guide portion 13 in the shape of a bowl is shown. Based probe card holder 3
The configuration of 0 is not limited to the above example. For example, by adopting the structure shown in FIG. 8 or 9, the pogo pin ring 50
It is also possible to support the pressing force applied by the.
In the embodiment shown in FIG. 8 or FIG. 9, the same members as those of the embodiment shown in FIG. 5 are designated by the same reference numerals, and the description thereof will be omitted.

The embodiment shown in FIG. 8 differs from the embodiment shown in FIG. 5 in that it differs from the area 36 extending downward from the peripheral portion of the probe card 10 from the end portion of the area 35, that is, the wiring area (B) and the pad. An area 40 is provided so as to curve downward from the vicinity of the boundary area with the area (C). This area 40 is the guide portion 13 of the probe card 10.
Is engaged with the lower surface of the upper block 13A and is fixed by a fixing member 41 such as a screw. As a result, the pressing force dispersed in the center of the probe card 10 is supported and absorbed by the region 40 on the lower surface of the upper block 13A,
It is possible to avoid the occurrence of stress strain of the probe card 10.

In the embodiment shown in FIG. 9, the structure is further simplified, and the region 36 of the probe card holder 30 shown in FIG. 5 extends almost linearly beyond the pad area (C) to the region 42. The wiring area (B) is also configured to support the probe card 10. Further, in this embodiment, the shoulder portion 43 is provided around the upper block 13A of the guide portion 13 of the probe card 10.
The region 44 of the probe card holder 30 engages with the shoulder portion 43 from below and is fixed to 45 by a fixing member such as a screw. As a result, the load applied to the probe card 10 is supported by the entire surface of the probe card holder 30, and stress strain of the probe card 10 can be avoided.

Next, the operating state of the probe card holder 30 constructed according to the present invention will be described with reference to FIGS. 10 and 11. First, as shown in the exploded view of FIG. 10, the probe card 10 is placed and fixed on the area 35 on the upper surface of the probe card holder 30 constructed according to the present invention. At the same time, the storage element 31 is placed and fixed in the area 32. The pogo pin ring 50 is pressed against the probe card 10 at the time of inspection.

As shown in FIGS. 10 and 11, the pogo pin ring 50 is a substantially columnar member having a cylindrical space in the center as shown in the figure, and its lower surface is
The pogo pins 51 are arranged so as to correspond to the lands 20 appropriately arranged in the pad area (C) of the probe card 10. At the time of inspection, the pogo pin ring 50 is driven by an appropriate pressing drive means, the pogo pin 51 is pressed against and electrically contacts the land 20 of the probe card 10, and the inspection data from the probe needle is transmitted. Further, the pogo pins 52 are also arranged on the upper surface of the pogo pin ring 50, and the pogo pins 5 on these upper surfaces are inspected at the time of inspection.
No. 2 is also pressed against the corresponding land of the tester 60 and electrically contacts with it, and the inspection data from the probe needle is further transmitted to the tester, and the tester 60 determines the quality of the inspected object. At the same time, the pogo pin 71 provided on the lower surface of the terminal 71 also comes into pressure contact with the land 33 provided on the upper surface of the storage element, and transmits predetermined data to the controller 90 via the cable 72. .

Further, the controller 90 is connected to a CPU 91, and the CPU 91 sends a necessary drive signal to the mounting table 103 based on a signal from the controller to optimally drive and control each stage 103A, 103B and 103C. It is possible to

Further, as shown in FIG. 11, the pogo pin ring 5
0 and the terminal 70 are engaged with each other on the surface 73, and the lands 20 of the probe card 10 and the lands 33 of the storage elements 31 are adjusted so as to be substantially on the same surface, so that the single operation is possible. It is possible to bring the respective pogo pins 51 and 71 into pressure contact with both the land 20 of the probe card 10 and the land 33 of the memory element 31.

[0051]

As described above, according to the probe device of the present invention, even when the number of probe needles is increased and there is no physical space on the surface of each probe card, the measurement of the card is performed. It is possible to store and manage the information required for the above in a storage element installed on the probe card holder. In addition, since the storage element is placed in the holder away from the signal line of the probe card, the measured signal is not generated due to mutual adverse effects (crosstalk) and noise between the high speed signal line of the probe card and the data control line of the memory Can be protected. Further, when the probe card is worn or broken, the probe card can be replaced and the probe card holder can be used continuously.

Further, according to the probe device of the present invention, the strength of the probe tip of the probe card is reinforced even when a pressing force is applied to the probe card by pogo ring during measurement. The stress can be absorbed, and the distortion of the probe card can be avoided. As a result, since the parallelism and the pressure of the tip portion of the probe needle can be kept uniform, highly accurate probe inspection can be performed.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an overall configuration of a probe device in which a probe card holder according to the present invention is mounted.

FIG. 2 is a vertical cross-sectional view showing the configuration of a probe card.

FIG. 3 is an enlarged cross-sectional view showing the operation of the probe needle of the probe card.

FIG. 4 is a plan view showing a configuration of a probe card.

FIG. 5 is a vertical sectional view of a probe card holder configured according to the present invention.

FIG. 6 is a plan view of a probe card holder configured according to the present invention.

FIG. 7 is a block diagram showing a connection state between an EEPROM and a probe device of a probe card holder configured according to the present invention.

FIG. 8 is a vertical sectional view of another embodiment of the probe card holder according to the present invention.

FIG. 9 is a vertical cross-sectional view of a probe card holder according to still another embodiment of the present invention.

FIG. 10 is an exploded view of a probe card holder, a probe card and a pogo pin ring configured according to the present invention.

FIG. 11 is a schematic view showing how a probe card holder configured according to the present invention is mounted on a probe device.

[Explanation of reference numerals] 10 probe card 11 substrate 12 probe needle 13 guide portion 14 needle fixing resin 15 needle fixing plate 17 upper guide plate 18 lower guide plate 20 pogo contact land 30 probe card holder 31 memory element 32 third Part 33 Storage device land 34 Insulating material 35 First part 37 Second part 50 Pogo pin ring 60 Tester 100 Probe device 102 Semiconductor wafer 103 Mounting table A Needle stand area B Wiring area C Pad area

Claims (4)

[Claims] 1. A probe card for making electrical contact with an object to be inspected to measure its electrical characteristics, and for holding and fixing the probe card at a measurement position in the probe device facing the object to be inspected. In a probe device comprising a probe card holder, the probe card holder is a storage unit for storing information for measuring the object to be inspected by using the probe card, and a storage unit of the storage unit. Connection means for connecting the information read / write path and the storage means,
A probe device comprising: 2. The probe card includes guide means for guiding a probe needle for measuring electrical characteristics of an object to be inspected to the object to be inspected, and the probe card holder is a back surface of the probe card. A first portion for supporting the probe card upward in the peripheral portion, and an engaging portion provided in the peripheral portion of the guide means of the probe card engages the guide means to support the probe card upward. And a second portion for operating the probe device. 3. The probe card holder further has a third portion around the first portion for supporting the probe card upward, and the storage means has a third portion. The probe device according to claim 2, wherein the probe device is installed on a surface. 4. The probe device according to claim 2, wherein the connecting means is a pogo contact which can be freely contacted and separated by an electrode and a pogo pin means.