Jig for measuring resistance of chip

Abstract

The jig comprises a bottom plate and a cover plate, the bottom plate is provided with a plurality of product placing grooves used for placing chip products needing resistance impedance detection, and the cover plate is provided with simple detection circuit structures corresponding to the two sides of the product placing grooves respectively. The simple detection circuit structure comprises ten plugging holes which are arranged corresponding to product contact pins, a conductive track, and a positive electrode detection port and a negative electrode detection port which are used for connecting a positive electrode and a negative electrode of detection equipment, and the second plugging hole and the ninth plugging hole are communicated with the positive electrode detection port through the conductive track. The No.1, No.3, No.4, No.5, No.6, No.7, No.8 and No.10 plugging holes are communicated with the cathode detection port through conductive tracks, and metal probes are plugged in the plugging holes and are used for communicating contact pins of corresponding products with the connected conductive tracks. According to the utility model, the process of measuring the impedance of the resistor is simplified, and an original single chip which needs to be measured for 16 times is simplified into a single chip which only needs to be measured for two times, so that the working efficiency is greatly improved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical glass gold-plated chips, in particular to a fixture for measuring chip resistance. Background Technique

[0002] In the semiconductor manufacturing process, wafers are formed into chips after exposure, etching, cutting, and packaging. However, the performance of the chips still needs to be judged by product reliability tests, and among them, chip resistance measurement is a very important test process in product reliability tests.

[0003] Existing chips, as Figure 1 shown, have a total of 20 pins numbered from 1 to 20, and the resistance of a total of 16 targets from circle 1 to circle 16 needs to be measured. As Figure 2 shown, the measurement of the resistance of a single chip needs to perform 16 resistance measurements together from circle 1 to circle 16 to confirm whether the chip impedance is qualified. All 16 measurements of the chip impedance need to be qualified for the chip to be considered qualified.

[0004] The existing measurement and detection methods are relatively cumbersome, greatly consuming manpower and having a low measurement effect. Content of the Utility Model

[0005] To solve the above technical problems, the utility model designs a fixture for measuring chip resistance, simplifies the process of measuring resistance impedance, and improves work efficiency.

[0006] The utility model adopts the following technical scheme:

[0007] A fixture for measuring chip resistance includes a bottom plate and a cover plate. A plurality of product placement grooves are provided on the bottom plate for placing chip products that need to be detected for resistance impedance. On both sides of the product placement grooves corresponding to the cover plate, simple measurement circuit structures are respectively provided. The simple measurement circuit structure includes ten plug holes arranged corresponding to the product pins, conductive tracks, a positive electrode detection port and a negative electrode detection port for connecting the positive and negative electrodes of the detection device. The second plug hole and the ninth plug hole are connected to the positive electrode detection port through the conductive track, and the first, third, fourth, fifth, sixth, seventh, eighth, and tenth plug holes are connected to the negative electrode detection port through the conductive track. Metal probes are inserted into the plug holes for connecting the corresponding product pins and the connected conductive tracks.

[0008] Preferably, pick-up grooves are provided on the left and right sides of the product placement grooves on the bottom plate for manually picking up and placing products.

[0009] Preferably, clamping grooves are provided on the upper and lower sides of the product placement grooves on the bottom plate for clamping products.

[0010] Preferably, arc-shaped openings are provided at the four corner positions of the product placement grooves on the bottom plate.

[0011] Preferably, support columns are arranged in the product placement groove on the bottom plate.

[0012] Preferably, positioning pins are correspondingly arranged at the four corners of the bottom plate, and positioning holes are correspondingly arranged on the cover plate. The positioning pins and the positioning holes are cooperatively inserted.

[0013] Preferably, the bottom plate is composed of an acrylic plate and an aluminum plate, and the aluminum plate is fixedly connected to the bottom of the acrylic plate.

[0014] Preferably, the conductive track is formed by grooving on the cover plate and coating conductive silicone.

[0015] The beneficial effects of the present utility model are as follows: The present utility model designs a fixture for measuring the resistance of a chip. The process of measuring resistance impedance is simplified. The original 16 measurements required for a single chip are simplified to only two measurements for a single chip, which greatly improves work efficiency and saves costs. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an existing chip product;

[0017] Figure 2 is a table of the impedance detection method for chips at the time of factory shipment;

[0018] Figure 3 is a schematic structural diagram of the bottom plate in the present utility model;

[0019] Figure 4 is a schematic structural diagram of the cover plate in the present utility model;

[0020] Figure 5 is Figure 4 an enlarged view of the simple measurement circuit structure in

[0021] In the figure: 1. Bottom plate, 2. Product placement groove, 3. Pick-up groove, 4. Clamping groove, 5. Support column, 6. Arc opening, 7. Positioning pin, 8. Cover plate, 9. Simple measurement circuit structure, 10. Insertion hole, 11. Positive detection port, 12. Negative detection port, 13. Conductive track. Detailed Embodiments

[0022] The following is a further detailed description of the technical solution of the present utility model through specific embodiments and in combination with the drawings:

[0023] Embodiment: As Figures 3 - 5 shown, a fixture for measuring the resistance of a chip is composed of a cover plate 8 and a bottom plate 1. As Figure 3As shown, the bottom plate is composed of an acrylic plate and an aluminum plate. There are four positioning pins 7 on the surface of the bottom plate for facilitating the positioning of the cover plate, and six screw holes for fixing the aluminum plate at the bottom. Placing the aluminum plate can prevent the acrylic plate from deforming. There are three product placement slots 2 on the bottom plate for placing chip products that need to be tested for resistance impedance. Pick-up slots 3 are provided on both the left and right sides of the product placement slots on the bottom plate for manually picking up and placing products. Clamping slots 4 are provided on both the upper and lower sides of the product placement slots on the bottom plate for clamping products. Arc-shaped openings 6 are provided at the four corners of the product placement slots on the bottom plate. There are four support columns 5 in the product placement slots on the bottom plate to prevent the products from being scratched. The products are placed on the support columns. The vertical distance from the surface of the support columns to the surface of the bottom plate fixture is 0.8 mm, and the thickness of the products is 0.7 mm. After the products are placed, there is a height difference of 0.1 mm from the surface of the bottom plate fixture, which can prevent the surfaces of the products from being scratched. Since 0.4 mm of the metal probe pins of the cover plate is exposed and has resilience, the circuit can be ensured to be connected.

[0024] As Figure 4 shown, the cover plate is a rectangular cover plate made of an acrylic plate with a total thickness of 5 mm. There are positioning holes around the cover plate. On both sides of the cover plate corresponding to the product placement slots, simple test circuit structures 9 are respectively provided. The simple test circuit structures include ten plug-in holes, conductive tracks 13 arranged corresponding to the product pins, and a positive detection port 11 and a negative detection port 12 for connecting the positive and negative poles of the detection device. The second plug-in hole and the ninth plug-in hole are connected to the positive detection port through the conductive track. The first, third, fourth, fifth, sixth, seventh, eighth, and tenth plug-in holes are connected to the negative detection port through the conductive track. The number and types of the conductive tracks are designed according to the product characteristics. The conductive tracks are grooved 0.5 mm downward and then coated with conductive silicone to connect the circuit through the conductive silicone. Metal probes are inserted through the plug-in holes 10 to contact the products for conduction. 0.4 mm of the metal probe head pins will leak out on the back of the cover plate. The contact point of the metal probe is 0.6 mm, the elastic force is 20 g, and the retractable amount is 0.8 mm.

[0025] After the fixture is completed, the products are placed in the bottom card slots, the cover is closed, and through the circuit design, the multimeter is connected to the positive and negative positions. It only needs to be measured twice to achieve the effect of being measured 16 times.

[0026] The above-described embodiments are only a preferred solution of the present utility model and do not impose any form of limitation on the present utility model. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A fixture for measuring chip resistors, characterized in that It includes a bottom plate and a cover plate. Multiple product placement grooves are provided on the bottom plate for placing chip products that need to be subjected to resistance impedance detection. On both sides of the product placement grooves corresponding to the cover plate, simple detection circuit structures are respectively provided. The simple detection circuit structure includes ten insertion holes arranged corresponding to the product pins, conductive tracks, a positive detection port and a negative detection port for connecting the positive and negative electrodes of the detection device. The second insertion hole and the ninth insertion hole are connected to the positive detection port through the conductive track. The first, third, fourth, fifth, sixth, seventh, eighth, and tenth insertion holes are connected to the negative detection port through the conductive track. Metal probes are inserted into the insertion holes for connecting the corresponding product pins and the connected conductive tracks.

2. The fixture for measuring chip resistors according to claim 1, characterized in that, Pick-up grooves are provided on the left and right sides of the product placement grooves on the bottom plate for manually picking up and placing products.

3. The fixture for measuring chip resistors according to claim 1, characterized in that, Clamping grooves are provided on the upper and lower sides of the product placement grooves on the bottom plate for clamping products.

4. The fixture for measuring chip resistance according to claim 1, characterized in that, Arc openings are provided at the four corners of the product placement grooves on the bottom plate.

5. The fixture for measuring chip resistors according to claim 1, characterized in that, Support columns are provided in the product placement grooves on the bottom plate.

6. The fixture for measuring the resistance of a chip according to claim 1, characterized in that, Positioning pins are correspondingly provided at the four corners of the bottom plate, and positioning holes are correspondingly provided on the cover plate. The positioning pins are inserted into the positioning holes in a matching manner.

7. The fixture for measuring chip resistors according to claim 1, characterized in that, The bottom plate is composed of an acrylic plate and an aluminum plate, and the aluminum plate is fixedly connected to the bottom of the acrylic plate.

8. The fixture for measuring chip resistors according to claim 1, characterized in that, The conductive track is formed by grooving the cover plate and coating it with conductive silicone.

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