Clamping device for chip high-frequency signal extraction

Abstract

The utility model belongs to the technical field of equipment, and particularly relates to a clamping device for extracting a high-frequency signal of a chip, which comprises a limiting plate, a flexible elastic sheet and a base which are arranged in a layered manner, and the base, the flexible elastic sheet and the limiting plate are sequentially arranged from bottom to top; the limiting plate is connected with the base, an opening matched with the packaging device to be tested in shape is formed in the middle of the limiting plate, and the limiting plate is used for limiting and fixing the flexible elastic sheet; the shape of the flexible elastic piece is matched with the shape of the limiting plate, the flexible elastic piece comprises two base films and two metal sheets, openings matched with the packaging device to be tested are formed in the base films, the two base films are arranged in a layered mode, the metal sheets are arranged between the two base films in a clamped mode, one end of each metal sheet is covered with the two base films, and the other end of each metal sheet is covered with the corresponding limiting plate. The other ends of the metal sheets are exposed in the openings of the two base films, and the two metal sheets are arranged at the two ends of the openings of the base films respectively. The utility model belongs to the technical field of chip signal extraction. The test fixture is convenient to disassemble and assemble, and the to-be-tested chip is not easy to scratch.

Description

Technical Field

[0001] The utility model belongs to the technical field of chip signal extraction, and particularly relates to a clamping device for chip high-frequency signal extraction. Background Art

[0002] Chip testing refers to various tests and verifications of integrated circuit chips to ensure that their performance, functions, and quality meet the design specifications and customer requirements. Chip testing includes: testing the electrical characteristics of the chip, testing the functions of the chip, and testing the reliability of the chip. In the above-mentioned various tests, specific test equipment is required for assistance.

[0003] Testing the high-frequency signals of chips requires specific test equipment for assistance. In the design of such test equipment, metal sheets are usually directly welded to both ends of the base. During testing, the metal sheets are electrically connected to the chips to be tested. During the process of installing and disassembling the chips to be tested, it is easy to scratch the chips to be tested; moreover, since the metal sheets are already welded to both ends of the base, it is difficult to assemble and disassemble. In view of this, this application provides a clamping device for chip high-frequency signal extraction to solve the above problems. Summary of the Utility Model

[0004] In view of the technical problems existing in the background art, the utility model provides a clamping device for chip high-frequency signal extraction, which has a simple structure, is convenient for assembly and disassembly, and is easy to operate.

[0005] To achieve the above object, the technical solution provided by the utility model is as follows:

[0006] A clamping device for chip high-frequency signal extraction, comprising: a limiting plate, a flexible elastic sheet, and a base;

[0007] The limiting plate, the flexible elastic sheet, and the base are arranged in a layered manner, with the base, the flexible elastic sheet, and the limiting plate arranged in sequence from bottom to top;

[0008] The limiting plate is connected to the base, and an opening adapted to the shape of the device under test for encapsulation is provided in the middle of the limiting plate. The limiting plate is used to limit and fix the flexible elastic sheet;

[0009] The shape of the flexible elastic sheet is adapted to the shape of the limiting plate. The flexible elastic sheet includes two base films and two metal sheets. Openings adapted to the device under test for encapsulation are provided in both base films. The two base films are arranged in a layered manner, and a metal sheet is sandwiched between the two base films. One end of the metal sheet is covered by the two base films, and the other end of the metal sheet is exposed in the openings of the two base films. The two metal sheets are respectively arranged at both ends of the openings of the base films.

[0010] Further, it includes:

[0011] The metal sheet is T-shaped, and the T-shaped end of the metal sheet is located in the opening of the base film.

[0012] Further, the limiting plate is connected to the base, including:

[0013] The base is provided with an opening, and the limiting plate is provided with an opening adapted to the opening of the base;

[0014] The size of the flexible elastic piece is smaller than the size of the limiting plate, and the opening of the limiting plate does not contact the flexible elastic piece;

[0015] Based on the opening of the base and the opening of the limiting plate, the base and the limiting plate are connected by screws and the flexible elastic piece is clamped and fixed between the base and the limiting plate.

[0016] Further, the limiting plate is connected to the base, including:

[0017] The size of the flexible elastic piece is the same as the size of the limiting plate;

[0018] The base is provided with an opening, the limiting plate is provided with an opening adapted to the opening of the base, and the flexible elastic piece is provided with an opening adapted to the opening of the limiting plate;

[0019] Based on the opening of the flexible elastic piece, the opening of the base and the opening of the limiting plate, the flexible elastic piece, the base and the limiting plate are connected and fixed by screws.

[0020] Further, it includes:

[0021] The material of the metal sheet is copper.

[0022] Further, it includes:

[0023] The metal sheet and the sheet are press-fitted and fixed by a hot press.

[0024] Further, it includes:

[0025] The metal sheet is an electroplated metal sheet, and the surface of the metal sheet is rough.

[0026] Further, it includes:

[0027] The metal sheet is a heat-treated metal sheet, and the heat treatment temperature is 280°.

[0028] The utility model has the following advantages and beneficial effects:

[0029] 1. In the present utility model, by providing a flexible elastic piece, the overall structure is convenient to disassemble and assemble and is not likely to scratch the device under test to be encapsulated.

[0030] 2. In the present utility model, when fixing the metal thin sheet, hot pressing is adopted, which increases the stability and repeatability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram after the separation of the flexible elastic piece, the limiting plate and the base provided by the present utility model;

[0032] Figure 2 It is a schematic structural diagram of the flexible elastic piece provided by the present utility model;

[0033] Figure 3 It is a schematic diagram after the combination of the device under test to be encapsulated, the flexible elastic piece and the limiting plate provided by the present utility model;

[0034] Figure 4 It is a schematic diagram of a connection mode between a limiting plate and a flexible elastic piece provided by the present utility model;

[0035] Figure 5 It is a schematic diagram after the combination of the device under test to be encapsulated and the flexible elastic piece provided by the present utility model.

[0036] Reference numerals: 1 - limiting plate, 2 - flexible elastic piece, 3 - base, 4 - base film, 5 - metal thin sheet, 6 - device under test to be encapsulated. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0038] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0039] Embodiment

[0040] As Figures 1 to 5 shown, the present application provides a clamping device for chip high-frequency signal extraction, including a limiting plate 1, a flexible elastic piece 2 and a base 3.

[0041] As Figure 1 and Figure 3 shown,Figure 1 Schematic diagram after the separation of the limit plate 1, flexible elastic piece 2 and base 3 Figure 3 Schematic diagram after the combination of the device under test for encapsulation 6 (chip under test) with the limit plate 1 and flexible elastic piece 2

[0042] It can be understood that in the actual test situation, it is necessary to Figure 3 fix the combined device under test for encapsulation 6 (chip under test) with the limit plate 1 and flexible elastic piece 2 together on the Figure 1 and Figure 3 base 3

[0043] As Figure 1 shown, the limit plate 1, flexible elastic piece 2 and base 3 are arranged in a layered manner, with the base 3, flexible elastic piece 2 and limit plate 1 in sequence from bottom to top

[0044] The limit plate 1 is connected to the base 3. An opening adapted to the shape of the device under test for encapsulation 6 is provided in the middle of the limit plate 1. The limit plate 1 is used to limit and fix the flexible elastic piece 2

[0045] As Figure 1 and Figure 3 shown, an opening is provided in the middle of the limit plate 1, and the shape of the opening is adapted to the shape of the device under test for encapsulation 6. The device under test for encapsulation 6 can fall onto the flexible elastic piece 2 through the opening of the limit plate 1

[0046] The limit plate 1 is connected to the base 3. The limit plate 1 is used to limit and fix the flexible elastic piece 2

[0047] The present application provides 2 connection methods for reference. Specifically, it can be Figure 4 and Figure 1 .

[0048] Method 1: As Figure 4 shown, an opening is provided on the base 3, and the limit plate 1 is provided with an opening adapted to the opening on the base 3; the size of the flexible elastic piece 2 is smaller than the size of the limit plate 1, and the opening of the limit plate 1 does not contact the flexible elastic piece 2; based on the opening on the base 3 and the opening on the limit plate 1, the base 3 and the limit plate 1 are connected by screws and the flexible elastic piece 2 is clamped and fixed between the base 3 and the limit plate 1

[0049] Openings are respectively provided at the 4 corners of the limit plate 1, and multiple openings are also provided on the base 3. The openings on the base 3 and the openings on the limit plate 1 are adapted. Screws can pass through the openings on the base 3 and the limit plate 1 to achieve the purpose of connecting the base 3 and the limit plate 1

[0050] The size of the flexible elastic piece 2 is smaller than that of the limiting plate 1, and the opening in the limiting plate 1 does not contact the flexible elastic piece 2. When connecting the base 3 and the limiting plate 1 with screws, the screws do not pass through the flexible elastic piece 2. After fixing the base 3 and the limiting plate 1, the flexible elastic piece 2 is directly clamped between the base 3 and the limiting plate 1.

[0051] Using Method 1 does not require adding additional fixing holes for the flexible elastic piece 2, and since the area of the flexible elastic piece 2 is also smaller than that of the limiting plate 1, it is more material-saving. However, this method may have the problem of insufficient stability in fixing the flexible elastic piece 2. Therefore, the present application provides Method 2.

[0052] Method 2: As Figure 1 shown, the size of the flexible elastic piece 2 is the same as that of the limiting plate 1; the base 3 is provided with an opening, the limiting plate 1 is provided with an opening adapted to the opening of the base 3, and the flexible elastic piece 2 is provided with an opening adapted to the opening of the limiting plate 1; based on the openings of the flexible elastic piece 2, the base 3, and the limiting plate 1, the flexible elastic piece 2, the base 3, and the limiting plate 1 are connected and fixed with screws.

[0053] Openings are respectively provided at the four corners of the flexible elastic piece 2, openings are respectively provided at the four corners of the limiting plate 1, and multiple openings are also provided on the base 3, and the openings of the flexible elastic piece 2, the openings of the limiting plate 1, and the openings of the base 3 are all mutually adapted. By connecting the openings of the flexible elastic piece 2, the openings of the limiting plate 1, and the openings of the base 3 with screws, the flexible elastic piece 2 and the limiting plate 1 can both be fixed on the base 3.

[0054]

Regarding the flexible elastic piece 2

[0055] The shape of the flexible elastic piece 2 is adapted to the shape of the limiting plate 1. The flexible elastic piece 2 includes two base films 4 and two metal foils 5. Openings adapted to the device under test package 6 are provided in both base films 4. The two base films 4 are arranged in a layer, and the metal foil 5 is clamped between the two base films 4. One end of the metal foil 5 is covered by the two base films 4, and the other end of the metal foil 5 is exposed in the openings of the two base films 4. The two metal foils 5 are respectively arranged at both ends of the opening in the base film 4.

[0056] The shape of the flexible elastic piece 2 being adapted to the shape of the limiting plate 1 enables the flexible elastic piece 2 to be better fixed and limited by the limiting plate 1.

[0057] As Figure 2 shown, the flexible elastic piece 2 includes two base films 4 and two metal foils 5 ( Figure 2The two base films 4 are overlapped and arranged in layers. Each base film 4 is provided with an opening adapted to the device under test 6 to be tested. The two base films 4 are arranged in layers, and a metal sheet 5 is sandwiched between the two base films 4. One end of the metal sheet 5 is covered by the two base films 4, and the other end of the metal sheet 5 is exposed in the openings of the two base films 4. The metal sheet 5 can be in a T shape. The T-shaped end of the metal sheet 5 is located in the opening of the base film 4, and the two metal sheets 5 are respectively arranged at both ends of the opening of the base film 4.

[0058] As Figure 5 shown, Figure 5 Figure 0000144 is a schematic diagram after the flexible elastic sheet 2 is combined with the device under test 6 to be tested. When testing, one end of the device under test 6 is connected to the exposed part of the metal sheet 5, and the other end of the device under test 6 is connected to the exposed part of the other metal sheet 5 to form a circuit together for signal extraction test.

[0059] The material of the metal sheet 5 is copper. When assembling the flexible elastic sheet 2, one base film 4 can be placed at the bottom, then the metal sheet 5 is aligned and placed on the base film 4, and then the other base film 4 is aligned and covered. Finally, the metal sheet 5 and the sheet are fixed by hot pressing.

[0060] In addition, the metal sheet 5 is an electroplated metal sheet, and the surface of the metal sheet 5 is rough. The metal sheet 5 is a heat-treated metal sheet, and the heat treatment temperature is 280°. It can be understood that electroplating and heat treatment of the metal sheet 5 are more conducive to signal extraction test.

[0061] The following describes the entire assembly process. When a signal extraction test is required, the flexible elastic sheet 2 is placed on the base 3, and the opening of the flexible elastic sheet 2 is aligned with the opening of the base 3. Then the limiting plate 1 is aligned with the flexible elastic sheet 2 so that the opening of the limiting plate 1 is aligned with the opening of the flexible elastic sheet 2. The limiting plate 1, the flexible elastic sheet 2 and the base 3 are connected in series by screws. The device under test 6 is placed in the limiting plate 1, and the device under test 6 automatically falls onto the flexible elastic sheet 2. At this time, the signal extraction test can be started.

[0062] In summary, the present application provides a clamping device for chip high-frequency signal extraction, comprising: a limit plate, a flexible elastic sheet, and a base; the limit plate, the flexible elastic sheet, and the base are arranged in a layered manner, with the base, the flexible elastic sheet, and the limit plate being arranged in sequence from bottom to top; the limit plate is connected to the base, and an opening adapted to the shape of the device to be tested and packaged is provided in the middle of the limit plate, and the limit plate is used to limit and fix the flexible elastic sheet; the shape of the flexible elastic sheet is adapted to the shape of the limit plate, the flexible elastic sheet includes two base films and two metal thin sheets, openings adapted to the device to be tested and packaged are provided in both base films, the two base films are arranged in a layered manner, a metal thin sheet is clamped between the two base films, one end of the metal thin sheet is covered by the two base films, and the other end of the metal thin sheet is exposed in the openings of the two base films, and the two metal thin sheets are respectively arranged at both ends of the openings of the base films. Compared with the prior art in which the metal thin sheet is directly welded to the base, by providing the flexible elastic sheet in the present application, the chip high-frequency signal extraction device is convenient to disassemble and assemble, and is not easy to scratch the device to be tested and packaged. Moreover, the metal thin sheet in the present application has undergone electroplating and heat treatment, can be reused, and has a high utilization rate. And, when fixing the metal thin sheet in the present application, a stacking and hot pressing method is adopted, which solves the problem that the insertion loss of the chip high-frequency test link is large and cannot be calibrated. The extremely thin flexible metal thin sheet is friendly to the adaptability of the high-frequency test pins of the packaged device, which is beneficial to the signal extraction test.

[0063] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A clamping device for extracting high-frequency signals from a chip, characterized in that :Including: a limit plate, a flexible spring and a base; The limiting plate, the flexible spring sheet and the base are arranged in layers, and from bottom to top they are the base, the flexible spring sheet and the limiting plate; The limiting plate is connected to the base, and an opening adapted to the shape of the packaged device to be tested is provided in the middle of the limiting plate, and the limiting plate is used to limit and fix the flexible spring sheet; The shape of the flexible spring sheet is adapted to the shape of the limiting plate. The flexible spring sheet includes two base films and two metal sheets. The base films are each provided with an opening adapted to the packaged device to be tested. The two base films are arranged in layers, and a metal sheet is sandwiched between the two base films. One end of the metal sheet is covered by the two base films, and the other end of the metal sheet is exposed in the opening of the two base films. The two metal sheets are respectively arranged at both ends of the opening of the base films.

2. A clamping device for extracting high-frequency signals from a chip as claimed in claim 1, characterized in that: include: The metal sheet is T-shaped, and one end of the T-shape of the metal sheet is located in the opening of the base film.

3. A clamping device for extracting high-frequency signals from a chip as claimed in claim 1, characterized in that: The limiting plate is connected to the base and includes: The base is provided with an opening, and the limiting plate is provided with an opening adapted to the opening of the base; The size of the flexible spring sheet is smaller than that of the limiting plate, and the opening of the limiting plate does not contact the flexible spring sheet; Based on the opening of the base and the opening of the limiting plate, the base is screwed to the limiting plate and the flexible spring clip is clamped and fixed between the base and the limiting plate.

4. A clamping device for extracting high-frequency signals from a chip as claimed in claim 1, characterized in that: The limiting plate is connected to the base and includes: The size of the flexible spring sheet is the same as that of the limiting plate; The base is provided with an opening, the limiting plate is provided with an opening adapted to the opening of the base, and the flexible spring sheet is provided with an opening adapted to the opening of the limiting plate; Based on the opening of the flexible spring sheet, the opening of the base and the opening of the limiting plate, the flexible spring sheet, the base and the limiting plate are connected and fixed by screws.

5. A clamping device for extracting high-frequency signals from a chip as claimed in claim 1, characterized in that: include: The material of the metal sheet is copper.

6. A clamping device for extracting high-frequency signals from a chip as claimed in claim 5, characterized in that: include: The metal sheet and the thin sheet are pressed and fixed by using a hot press.

7. A clamping device for extracting high-frequency signals from a chip as claimed in claim 5, characterized in that: include: The metal sheet is an electroplated metal sheet, and the surface of the metal sheet is rough.

8. A clamping device for extracting high-frequency signals from a chip as claimed in claim 5, characterized in that: include: The metal sheet is a heat-treated metal sheet at a temperature of 280°.

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