Mold core structure and mold core module for fixing sheet-shaped probe for testing

Abstract

The embodiment of the invention discloses a mold core structure and a mold core module for fixing a sheet-shaped probe for testing. A mold core comprises a body, and the body comprises a bottom wall and a side wall which extends upwards from the edge of the bottom wall and is of an annular structure; the body is formed through an integral forming process; the side wall of the annular structure and the bottom wall jointly form a cavity with a middle containing space. The side walls comprise two oppositely arranged first side walls and two oppositely arranged second side walls; the inner side wall faces of the two first side walls respectively comprise a plurality of partition walls extending into the cavity, and the partition walls are arranged in the extending direction of the first side walls between the two second side walls. The partition wall comprises an inner wall surface deviating from the first side walls, and a spacing cavity forming a cavity is formed between the inner wall surfaces of the partition wall between the two first side walls; the inner wall surface of the partition wall is a slope surface. According to the mold core, the yield when the mold core for the micron-sized flaky probe is manufactured by adopting an integral forming process can be improved, and the production cost of an enterprise is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of product testing, and more specifically to a core structure and a core module for fixing a sheet-shaped probe for testing. Background Art

[0002] With the rapid development of display panel technology and technological progress, consumers have increasingly higher requirements for the quality of mobile phone screens, which makes mobile phone screen testing particularly important. At present, test modules are widely used in the market to perform crimping tests on mobile phone screens, such as spring pin test modules. This module usually contains a row of dozens of densely arranged spring pins, which mainly play a conductive role during the test process. By contacting the electrical connection end of the product, the signal point is brought out and connected to the test board, thereby realizing functional testing.

[0003] Although existing technologies have initially realized the connection function from product signal points to test boards, as the size of the tested products continues to shrink, the size and spacing of their test points have also reached the micron level, and traditional manufacturing processes have been unable to meet such high-precision requirements. Although the application of precision machining technology can solve this problem, the high cost has significantly increased the overall production cost. Since the probe module is a key component of the test fixture, the impact of its rising manufacturing cost on the total cost of the enterprise is particularly obvious. Summary of the invention

[0004] One object of the present invention is to provide a core structure for fixing a sheet-shaped probe for testing, so as to solve the problems of difficulty in manufacturing a micron-sized core and high cost.

[0005] Another object of the present invention is to provide a core mold set including the core structure as described above.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: According to one object of the present invention, the present invention first provides a core structure for fixing a sheet-shaped probe for testing, wherein the core structure is used for assembling the sheet-shaped probe for testing; The core structure comprises a body, which comprises a bottom wall and a side wall extending upward from the edge of the bottom wall and presenting a ring-shaped structure; the body is formed by an integrated molding process; The side wall and the bottom wall of the annular structure together form a cavity with a central accommodating space; The side wall comprises two first side walls arranged opposite to each other and two second side walls arranged opposite to each other; The inner sidewall surfaces of the two first sidewalls respectively include a plurality of partition walls extending into the cavity, and the plurality of partition walls are arranged between the two second sidewalls along the extending direction of the first sidewall; The partition wall comprises an inner wall surface away from the first side wall, and a partition cavity constituting the cavity is provided between the inner wall surfaces of the two first side wall partition walls; the inner wall surface of the partition wall is a slope surface.

[0007] In addition, a preferred solution is that, in a plane perpendicular to the plane where the first side wall is located, the width of the partition wall gradually widens from the top of the main body to the bottom wall.

[0008] In addition, a preferred solution is that the inner wall surface of the partition wall is a straight slope surface.

[0009] In addition, a preferred solution is that the side wall is an annular closed structure.

[0010] In addition, a preferred solution is that the body is rectangular, the body includes a long axis side and a short axis side, the first side wall is arranged along the long axis side, and the second side wall is arranged along the short axis side; the length of the long axis side of the body is 6.4mm-10mm, and the length of the short axis side is 1.58mm-2.55mm.

[0011] In addition, a preferred solution is that the distance between two adjacent partition walls on the same first side wall is 155 μm-186 μm, and the thickness of the partition wall is 75 μm-105 μm.

[0012] In addition, a preferred solution is that the projection of the spacing cavity in the plane where the second side wall is located is a trapezoidal structure; it is defined that the short side length of the trapezoidal structure is represented by a, the long side length is represented by b, and the height is represented by h, wherein a / b=2.

[0013] In addition, a preferred solution is that the slope of the inner wall surface of the partition wall is 7-7.2.

[0014] In addition, a preferred solution is that, in a direction perpendicular to the arrangement direction of the plurality of partition walls in a horizontal plane, each probe groove accommodates and fixes a sheet-shaped probe.

[0015] According to another object of the present invention, the present invention also provides a core mold assembly, which includes the core structure as described above, and also includes a cover body, which is installed on the side of the main body away from the bottom wall, and the cover body is used to constrain and fix the sheet probe in the cavity, and the cover body includes a through hole for the electrical contact end on the other side of the sheet probe to pass through so as to be exposed outside the cover body.

[0016] The beneficial effects of the present invention are as follows: The present invention provides a core structure for assembling a sheet probe for detection, which is formed by an integrated molding process. The core structure consists of a bottom wall and an annular side wall extending upward from the edge of the bottom wall, wherein the side wall is further subdivided into two opposite first side walls and two opposite second side walls. The inner surface of each first side wall is provided with a plurality of inwardly protruding partitions, which form a partition cavity inside the cavity, and the inner wall surface thereof is designed to be a slope shape. This design significantly improves the molding quality of the core structure under micron-level precision, ensures the integrity of the cavity and prevents damage, thereby greatly improving the yield rate when the core for micron-level sheet probes is manufactured by an integrated molding process. This not only enhances production efficiency, but also expands the scope of application of the product. In addition, since the steps of separately producing and then assembling multiple components in the traditional method are omitted, the present invention effectively reduces the errors caused by assembly, thereby greatly reducing the production costs of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0018] Figure 1 The overall structural schematic diagram of the core structure provided by the embodiment of the present invention is shown.

[0019] Figure 2a A cross-sectional schematic diagram showing an embodiment of the present invention provides a core structure from a viewing angle in the direction of a first side wall.

[0020] Figure 2b A schematic cross-sectional structure diagram of a core structure provided by an embodiment of the present invention from another viewing angle in the direction of the first side wall is shown.

[0021] Figure 3 A schematic cross-sectional view in the first side wall direction showing the matching of a core structure and a sheet-shaped probe provided by an embodiment of the present invention.

[0022] Figure 4 A schematic diagram showing the forces between the inner wall surface of the partition wall and the inner mold of the core structure provided by an embodiment of the present invention during demoulding is shown.

[0023] Figure 5 A schematic diagram of assembling a core mold assembly according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with preferred embodiments and accompanying drawings. Similar components in the accompanying drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0025] The probe is a precision connection device used in electronic products such as mobile phones. It is widely used in electronic product testing equipment. It mainly includes an elastic part and a connecting part connected to both ends of the elastic part. It mainly plays the role of signal connection and conduction. It has different appearances depending on the application.

[0026] Taking the display panel as an example, in the field of display panel testing, the probe mainly plays the role of signal connection and transmission. Specifically, when testing the display panel, the display panel needs to be installed and fixed on a carrier. The carrier serves as a mechanism for carrying the display panel on the one hand, and as a signal switching mechanism to conduct the signal between the display panel and the test equipment on the other hand. A probe module is provided on the carrier, and a probe is installed inside the probe module. One end of the probe is exposed and connected to the FPC (flexible circuit board) on the display panel, and the other end is connected to the adapter board on the carrier. After crimping and fixing, the signal conduction is completed. The signal is transmitted to the display panel through the carrier and the probe through the test equipment. The display panel is lit and switched to different pictures for color, brightness and mura-related defect detection. Effective detection of problematic products is an indispensable detection link in the current display panel testing field.

[0027] The traditional form of probe module is a processed product, and the probes are installed and fixed inside the probe module in sequence. However, as the size of the product being tested continues to shrink, the size and spacing of its test points have also reached the micron level. The traditional manufacturing process can no longer meet such high-precision requirements.

[0028] The one-piece molding process is a manufacturing method widely used in product molding. The present invention relates to a core structure for fixing a sheet probe for testing. Such sheet probes are precision tools that play a key role in the electronic components and semiconductor industries (such as wafer testing and finished product testing). They serve as a bridge between electronic components, chips or wafers and test equipment, are responsible for signal transmission, and are crucial to ensuring the quality and performance of semiconductor products. Since these sheet probes are extremely small in size—the length, width and thickness are all at the micron level, and dozens of probes are densely arranged in each row, and good electrical insulation is required between adjacent probes, the core structure used to fix these probes must also be designed to be equally fine.

[0029] The use of an integrated molding process to produce core structures with micron-level precision requirements can bring significant advantages: it not only reduces production costs and improves production efficiency, but also simplifies the production process and reduces the error accumulation problem caused by making each component of the core structure separately in batches and then assembling them.

[0030] However, using traditional processes to manufacture micron-sized core structures faces many challenges, especially how to achieve complete and lossless demolding in such a tiny structure to ensure that a cavity is formed inside the core to accommodate and fix up to dozens of sheet probes. This is particularly critical. The root cause is that during the molding process, there is contact pressure and surface friction coefficient between the inner mold and the product being solidified, which leads to a large sliding friction force during demolding. Especially when the probe grooves are densely arranged (up to dozens per row), under micron-level precision requirements, this sliding friction force can easily cause damage to the partitions between adjacent sheet probes, making it difficult to obtain a complete core cavity, which in turn leads to low yield and increased production costs.

[0031] In order to solve the above problems, the present invention proposes a new core structure solution for fixing the sheet probe for testing. This design aims to overcome the problems of high manufacturing difficulty, high cost and significant assembly error in the prior art, so that this type of core with high precision requirements can be integrally formed through a one-time molding process. This not only simplifies the production process and reduces the error accumulation caused by multi-step assembly, but also significantly improves production efficiency and greatly reduces the manufacturing cost of the enterprise.

[0032] like Figures 1 to 4 As shown, the present invention provides a core structure for fixing a sheet probe for testing. The core structure is used to assemble the sheet probe for testing, and the core structure includes a main body 1, and the main body 1 includes a bottom wall 10 and a side wall in an annular structure extending upward from the edge of the bottom wall 10, and the side wall in an annular structure and the bottom wall 10 together constitute a cavity 20 with a central accommodating space. Preferably, the side wall is an annular closed structure. The present invention provides a core structure main body 1 that is formed by an integrated molding process. It should be noted that the bottom wall 10 of the main body 1 and the side wall in an annular structure can constitute the peripheral structure of the core structure, and the cavity 20 formed by the two together is for accommodating the sheet probe 2, and the main body 1 can be used in conjunction with the cover body 3, thereby fixing each sheet probe 2 in the cavity 20, and subsequently being used on a detection component for contact detection of a product, such as the detection end of a test board.

[0033] In order to ensure that the plurality of sheet probes 2 can be arranged in a specific order and electrically insulated from each other, the present invention specifically defines the structure of the side wall: the side wall includes two oppositely disposed first side walls 11 and two oppositely disposed second side walls 12. The inner surface of each first side wall 11 is provided with a plurality of inwardly protruding partition walls 111, which are arranged along the direction of the first side wall 11 between the two second side walls 12. This layout effectively isolates adjacent sheet probes 2, prevents electrical interference between them, and thus ensures the accuracy of the test results.

[0034] The core structure body 1 provided by the present invention is formed by an integrated molding process. In order to solve the defects of the prior art as described above, the following design is made, combined with Figures 1 to 4 ,as well as Figure 5 As shown, specifically, the partition wall 111 includes an inner wall surface 1111 facing away from the first side wall 11, and a spacer cavity 201 constituting the cavity is provided between the inner wall surfaces 1111 of the partition walls 111 of the two first side walls 11, and the inner wall surface 1111 of the partition wall 111 is a slope surface. By utilizing the design of the spacer cavity 201, the parts on the inner mold for making each probe groove can be connected as one, which is beneficial for demoulding, and the inner mold required for the core structure provided by the present invention in the one-piece molding process can be better integrated.

[0035] In addition, the present invention is also significantly superior to the prior art in terms of demolding difficulty. Specifically, when an inner mold is used for integral molding of a product, the sliding friction between the inner mold and the molded product plays a key role in the molding integrity of the product. For demolding of an outer mold, a quick and easy demolding process can be achieved by using a release agent between the outer mold and the outer surface of the molded product. Although the release agent layer will take up a certain amount of space, the outer dimensions of the molded product can be adjusted through subsequent processing (such as polishing) without affecting the external dimensions of the final product.

[0036] However, in terms of demolding the inner mold, especially for the core structure with micron-level precision requirements proposed by the present invention, there are two major challenges: First, if too much release agent is applied to the surface of the inner mold, the thickness of the release agent will directly affect the accuracy of the probe groove. Second, due to the large contact area between the dense partitions used to form the probe groove and the inner mold, the high sliding friction generated between the two under the action of contact pressure may damage these fine structures (such as partitions), especially at the micron scale. This sliding friction may cause partial damage to the partitions, thereby destroying the integrity of the entire core structure.

[0037] Moreover, the core structure requiring micron-level precision has dozens of sheet probes corresponding to dozens of partitions. Although the thickness of each partition is very fine, at such a high density, the inner wall surface of the partition is equivalent to one surface. That is to say, taking the densely distributed partitions on one side as an example, the inner mold needs to overcome the sliding friction resistance of three molding surfaces of the wall surfaces on both sides of the partitions and the inner wall surface when demolding. Both first side walls are provided with partitions. When demolding, the inner mold needs to overcome the sliding friction resistance of a total of six molding surfaces of the wall surfaces on both sides of each partition wall and the inner wall surface of each partition wall, which makes it very difficult to demold smoothly.

[0038] like Figure 4As shown, the present invention effectively solves the problem of micron-level core structure in demoulding process by designing the inner wall surface 1111 of the partition wall 111 as a slope surface. Specifically: 1. The slope surface design reduces the contact area between the two side walls of the partition wall 111 and the inner mold, thereby reducing the friction resistance between the two. 2. Because the static pressure f between the inner mold 4 and the inner wall surface 1111 of the partition wall 111 静 Perpendicular to the inner wall of the partition wall, based on the slope design, the inner mold 4 will not slide relative to the inner wall 1111 of the partition wall 111 during demoulding, thereby avoiding the generation of additional demoulding resistance. 3. There are contact pressures in three directions between the inner mold 4 and the partition wall 111, namely, the pressure between the two side walls of the partition wall 111 and the inner mold 4, and the pressure between the inner wall 1111 of the partition wall 111 and the inner mold 4. When the product is demoulded, the pressures between the two side walls of the partition wall 111 and the inner mold 4 are opposite and offset each other, and the inner wall 1111 of the partition wall 111 and the inner mold 4 do not generate relative sliding friction, thereby ensuring that the flatness and integrity of the partition wall 111 in the vertical direction are not affected, and ensuring the integrity of the partition wall structure.

[0039] Compared with the prior art, the new core structure provided by the present invention only needs to overcome the sliding friction resistance of a total of four molding surfaces on both sides of each side wall when the inner mold is demolded, which greatly reduces the demolding resistance, thereby improving the molding quality of the micron-level core structure, ensuring the integrity of the core structure cavity and avoiding its damage, and significantly improving the yield rate of the core structure used for micron-level sheet probes through an integrated molding process. This not only improves production efficiency, but also enables the product to be more widely used. In addition, it can also greatly reduce the production cost of the enterprise, eliminating the process of separately manufacturing multiple components in batches and then assembling them in the traditional method, and reducing the errors caused by assembly.

[0040] Furthermore, in the core structure provided in the present embodiment, the partition walls 111 of the two first side walls 11 are arranged opposite to each other, and the cavity 20 also includes a probe groove, which is composed of a first cavity 202 and a second cavity 203. Specifically, the first cavity 202 refers to the space between two adjacent partition walls 111 on the same first side wall 11, and the second cavity 203 is used to connect the first cavity 202 between the two first side walls 11. Furthermore, the bottom wall 10 is designed with a via 101 and a limiting surface 102 formed on the inner wall surface of the bottom wall 10. The function of the via 101 is to allow one side of the electrical contact end of the sheet probe 2 to pass through and be exposed outside the bottom wall; the limiting surface 102 cooperates with the needle edge of the sheet probe 2 to fix the sheet probe 2 in the cavity 20, thereby preventing it from being taken out from the bottom wall 10 side.

[0041] In one embodiment, the width of the partition wall 111 gradually increases from the top of the body to the bottom wall 10 in a direction perpendicular to the plane where the first side wall 11 is located. In other words, when the partition wall 111 is projected onto the plane where the second side wall 12 is located, it presents a trapezoidal structure. The inner wall surface 1111 of the partition wall 111 in the design is a slope surface, which avoids the problem of demolding difficulties caused by excessive friction of the inner wall surface 1111 of the partition wall 111 during the one-piece molding process, ensures the integrity of the core structure cavity 20 and avoids damage. By designing the partition wall 111 as a trapezoidal structure, the width gradually widens from the top to the bottom wall 10, which helps to reduce stress concentration and prevent the partition wall 111 from being damaged during the demolding process, thereby improving the precision of the molded part.

[0042] In one embodiment, the inner wall surface 1111 of the partition wall 111 is a straight slope surface. The design of the straight slope surface can significantly reduce the friction between the inner wall surface 1111 of the partition wall 111 and the inner mold 4, which helps to complete the demoulding process more smoothly and avoid demoulding difficulties or damage caused by excessive friction. In addition, the inner mold can be more easily separated from the partition wall during the demoulding process, reducing the risk of jamming and ensuring the integrity of the product molded parts. During the one-piece molding process, the inner wall surface with a straight slope structure can evenly distribute the stress on the inner wall surface, avoiding stress concentration caused by sharp edges or complex structures. This helps to improve the structural strength and durability of the molded parts, reduce surface defects, and improve the overall molding quality. Compared with complex curved surfaces or multi-segment structures, the inner mold corresponding to the straight slope surface is simpler to process, and it is easier to achieve high precision and high consistency, reducing the manufacturing difficulty and cost. The subsequent trimming of the cavity structure is reduced, and the overall production efficiency is improved.

[0043] The probe groove of the traditional core structure is in the form of an integral through groove. When the mold is opened, the inner mold of the core is a plurality of sheet plates arranged side by side, and the thickness of the sheet plates is the width of the probe groove. In this way, the overall structural strength of the inner mold is poor and it is easy to break and damage. The present invention provides a core structure cavity including a spacer cavity, and the spacer cavity makes the probe grooves on both sides disconnected from the middle, so that the inner mold structure includes an intermediate main body part forming the spacer cavity and a sheet plate extending from the main body part to both sides to form the probe groove. Because the sheet plate extends from the main body part to both sides, the width of the sheet plate is relatively small, and each sheet plate is fixed by the middle main body part, the overall structural strength of the entire inner mold is improved, and it is not easy to be damaged during the product molding process, especially each sheet plate of precise size will not be damaged during demolding.

[0044] In one embodiment, the present invention provides a core structure whose main body is rectangular, wherein the main body 1 includes a long axis side and a short axis side, wherein the first side wall 11 is a side wall arranged along the long axis side, and the second side wall 12 is a side wall arranged along the short axis side. The improvement of the core structure proposed by the present invention is targeted at a core structure whose size is 6.4mm-10mm in length on the long axis side of the main body, and 1.58mm-2.55mm in length on the short axis side. The distance between two adjacent partitions on the same first side wall is 155μm-186μm, and the thickness of the partition is 75μm-105μm.

[0045] According to the dimensions of a core structure product in actual application, the length of the main body on the long axis side is 9.4 mm, the length on the short axis side is 2.4 mm, the distance between two adjacent partitions on the same first side wall is 175 μm, and the thickness of the partition is 95 μm.

[0046] In one embodiment, the projection of the spacer cavity 201 in the plane where the second side wall 12 is located is a trapezoidal structure. It should be noted that, according to the placement position of the core structure and the different viewing angles, the projection of the spacer cavity 201 in the plane where the second side wall 12 is located under the viewing angle shown in the figure is an inverted trapezoidal structure. Further, it is defined that the short side length of the trapezoidal structure is represented as a, the long side length is represented as b, and the height is represented as h, where a / b=2.

[0047] Further, according to the calculation formula of the slope, the percentage of the vertical height and horizontal distance of the slope is expressed as i= (h) / (l), where i represents the slope, h represents the vertical height difference, and l represents the horizontal distance. In a core structure product of practical application, the slope of the inner wall surface of the partition wall of the core structure provided by the present invention is 7-7.2.

[0048] The size of the slope will affect the length of the short side and the long side of a single partition wall, and the length of the short side and the long side will affect the overall width of the partition wall. If the inner wall surfaces 1111 of the two corresponding partition walls 111 between the two first side walls 11 are far apart, the overall width of the partition wall will be too narrow. In such a fine-sized core structure, the strength of the partition wall with too narrow width is difficult to ensure. In addition, when operating the installation of the sheet probe 2, it is not easy to accurately install each sheet probe 2 in each probe groove. During the detection process, when two adjacent sheet probes are squeezed and bent, they are prone to contact, thereby affecting the test quality.

[0049] On the contrary, if the inner wall surfaces 1111 of the two corresponding partition walls 111 between the two first side walls 11 are close to each other, the overall width of the partition walls 111 will be too wide. Although the excessively wide partition walls 111 can increase the strength of the partition walls 111, when the inner mold is used for demolding, as mentioned above, the partition walls 111 are more likely to be damaged by the traction of the mold due to the influence of sliding friction. This situation will lead to a decrease in the yield of the core product and fail to achieve the goal of reducing costs and increasing efficiency.

[0050] In one embodiment, the core structure provided by the present invention is in a direction orthogonal to the arrangement direction of the plurality of partitions 111 in the horizontal plane, and each probe groove accommodates and fixes a sheet probe 2. According to the purpose of the invention of the present invention, by improving the main body structure, the core structure can ensure the consistency of the size and position of each probe groove during the one-piece molding process, thereby improving the accuracy and reliability of the test. In addition, the core structure suitable for the one-piece molding process provided by the present invention is also convenient for batch manufacturing of the core structure. The modular design makes it possible to flexibly combine multiple core structures according to actual test requirements. Each core structure can be used independently or spliced ​​with other core structures to form a larger test array, thereby significantly improving the flexibility and adaptability of the core structure in use. If a core structure fails or needs maintenance, it can be replaced separately without affecting the normal operation of other parts, ensuring the continuity and stability of the test.

[0051] In the traditional core structure, the inner wall of the adjacent wall is usually vertical. To facilitate the processing and production of the inner mold itself, an effective distance will be left between the inner wall of the adjacent wall of the two first side walls at the bottom wall of the existing core to facilitate the demolding of the inner mold. This effective distance will cause the distance between the inner wall of the adjacent wall to be too large. After the core is formed, the above effective distance cannot be reduced by other means. The disadvantage is that during the test process, the sheet probe will be squeezed and deformed to a certain extent, resulting in a reduction in the distance between two adjacent sheet probes, which will cause certain interference to the electrical performance and affect the test accuracy, causing the interference value of the image to the touch test to exceed the set range (-0.117~0.1838), resulting in misjudgment.

[0052] In the present invention, the inner wall surface of the partition wall is designed to be a slope surface, so that the structure of the partition wall is a trapezoidal structure. As described above, when the inner mold demolding can be successfully completed, the effective distance between the relative inner wall surfaces of the two first side walls at the bottom wall can be reduced, and when the core is designed and the inner mold is opened, the width of the end of the partition wall close to the bottom wall is increased compared with the traditional design, thereby effectively isolating the two adjacent sheet probes. During the test, even if the sheet probes are squeezed, twisted and deformed by force, the two oppositely arranged partition walls close to the bottom wall after the effective spacing is reduced can prevent the occurrence of the above situation and reduce the impact on the test. In actual production operations, the present invention provides a core structure, and in the interference value test of the image to the touch test, the test value can be maintained within 1.8, thereby improving the test accuracy.

[0053] According to another object of the present invention, the present invention also provides a core mold assembly, combined with Figure 5 As shown, specifically, the module includes the core structure as described above, and the module also includes a cover body 3, which is installed on the side of the body 1 away from the bottom wall 10, and the cover body 3 is used to constrain and fix the sheet probe 2 in the cavity 20, and the cover body 3 includes a through hole for the electrical contact end of the other side of the sheet probe 2 to pass through and be exposed outside the cover. The core structure obtained by adopting the one-piece molding process ensures that the size of each probe slot in the core module can achieve high consistency, eliminating the test error that may be caused by size differences. Secondly, since the two ends of the sheet probe - whether it is the electrical connection end exposed on the upper surface of the core module or the other electrical connection end exposed on the lower surface of the core module, its electrical connection end can maintain an accurate and consistent position height, which improves the accuracy and stability during the test process. It should be noted that the advantages of the core module provided by the present invention compared with the prior art include but are not limited to the advantages of the core structure that can be integrally molded provided by the present invention compared with the prior art.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A core structure for fixing a sheet-shaped probe for testing, characterized in that: The core structure is used for assembling a sheet probe for testing; The core structure comprises a body, which comprises a bottom wall and a side wall extending upward from the edge of the bottom wall and presenting a ring-shaped structure; the body is formed by an integrated molding process; The side wall and the bottom wall of the annular structure together form a cavity with a central accommodating space; The side wall comprises two first side walls arranged opposite to each other and two second side walls arranged opposite to each other; The inner sidewall surfaces of the two first sidewalls respectively include a plurality of partition walls extending into the cavity, and the plurality of partition walls are arranged between the two second sidewalls along the extending direction of the first sidewall; The partition wall comprises an inner wall surface away from the first side wall, and a partition cavity constituting the cavity is provided between the inner wall surfaces of the two first side wall partition walls; the inner wall surface of the partition wall is a slope surface.

2. The core structure according to claim 1, characterized in that: In a plane perpendicular to the plane where the first side wall is located, the width of the partition wall gradually widens from the top of the main body to the bottom wall.

3. The core structure according to claim 1, characterized in that: The inner wall surface of the partition wall is a straight slope surface.

4. The core structure according to claim 1, characterized in that: The side wall is an annular closed structure.

5. The core structure according to claim 1, characterized in that: The body is rectangular and includes a long axis side and a short axis side. The first side wall is arranged along the long axis side, and the second side wall is arranged along the short axis side. The length of the long axis side of the body is 6.4mm-10mm, and the length of the short axis side is 1.58mm-2.55mm.

6. The core structure according to claim 1, characterized in that: The distance between two adjacent partition walls on the same first side wall is 155 μm-186 μm, and the thickness of the partition wall is 75 μm-105 μm.

7. The core structure according to claim 1, characterized in that: The projection of the spacing cavity in the plane where the second side wall is located is a trapezoidal structure; it is defined that the short side length of the trapezoidal structure is represented by a, the long side length is represented by b, and the height is represented by h, wherein a / b=2.

8. The core structure according to claim 1, characterized in that: The slope of the inner wall surface of the partition wall is 7-7.

2.

9. The core structure according to claim 1, characterized in that: In a direction perpendicular to the arrangement direction of the plurality of partition walls in a horizontal plane, each probe groove accommodates and fixes a sheet-shaped probe.

10. A core mold assembly, characterized in that: The module includes a core structure as described in any one of claims 1 to 9, and also includes a cover body, which is installed on the side of the main body away from the bottom wall, and is used to constrain and fix the sheet probe in the cavity. The cover body includes a through hole for the electrical contact end on the other side of the sheet probe to pass through so as to be exposed outside the cover body.

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