Tabletting structure for enhancing contact between high-power Bar strip and test carrier

Abstract

The utility model discloses a pressing sheet structure for enhancing the contact between a high-power Bar strip and a test carrying table, which comprises a driving assembly arranged on the test carrying table, a pressing-down pressing sheet is arranged on the driving assembly, and when the Bar strip is in contact with the test carrying table, the driving assembly can drive the pressing-down pressing sheet to tightly press the Bar strip on the test carrying table. The driving assembly drives the pressing piece to press the Bar bar on the test carrying table, the contact gap between the Bar bar and the test carrying table is further reduced, after the contact gap is reduced, the contact performance of the Bar bar to be tested and the test carrying table is improved, then the heat conduction effect is improved, heat generated in the Bar bar test process can be rapidly conducted out, and the test efficiency of the Bar bar is improved. The condition that the performance test result of the Bar strip is influenced by high temperature and misjudgment is formed is avoided, and the technical problems that in the prior art, contact between the to-be-tested Bar strip and the test platform deck is poor, and the heat conduction effect is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of a Bar strip test bench, in particular to a sheet pressing structure for enhancing the contact between a high-power Bar strip and a test carrier. Background Art

[0002] The laser bar is a single laser bar formed by cleaving a semiconductor laser wafer and consisting of multiple semiconductor single tubes arranged side by side. In the production process of the laser bar, it is necessary to simulate the working state after production to test its performance parameters. During the test, there are adsorption holes on the test platform. The bar is adsorbed to the test platform through negative pressure, and the upper part uses a powered probe to power a single laser chip, and then the chip performance is characterized. However, during the test of high-power laser bars, the heat generated is relatively large. If the bar is adsorbed by the negative pressure adsorption hole alone, the contact between the bar to be tested and the test platform is poor, and the thermal conductivity is poor, which will lead to a series of problems such as premature saturation of the chip, spectrum modulation, and thermal effect Kink, resulting in a large difference between the performance test results and the actual performance, resulting in misjudgment.

[0003] In order to solve the above-mentioned series of problems caused by poor thermal conductivity, a heat dissipation component is usually added to the test platform to cool the test platform so that the BAR bar is within the normal temperature range during testing, and the performance test results will not be affected by high temperature, avoiding misjudgment.

[0004] For example, a Chinese patent with authorization announcement number CN220829537U discloses a BAR bar test bench, including an operating table, a support base, a heat dissipation component, a sample block, a cold block, a negative electrode terminal, a positive terminal and a pressure shifting component, wherein the support base is fixedly connected to the operating table, the heat dissipation component is fixedly connected to the support base and is located at the upper end of the support base, the cold block is fixedly connected to the heat dissipation component and is located at the upper end of the heat dissipation component, the sample block is fixedly connected to the cold block, the negative electrode terminal is fixedly connected to the cold block and is located at the upper end of the cold block, the pressure shifting component is fixedly connected to the operating table and is located at the upper end of the operating table, and the pressure shifting component is arranged on one side of the support base, and the positive terminal is fixedly connected to the pressure shifting component and is located at one end of the pressure shifting component. The above disclosed structure can cool down the test bench, so that the BAR bar is in a normal temperature range during detection, and the detection value is not affected by high temperature.

[0005] Among the above-mentioned disclosed documents, a heat dissipation component is used to cool the test bench, so that the performance test results will not be affected by high temperature. However, this method of cooling the test stage through the heat dissipation component to ensure that the performance test results are not affected by high temperature only changes the environment when the Bar strip is detected, and does not solve the technical problems of poor contact between the Bar strip to be tested and the test stage and poor heat conduction effect. It does not fundamentally solve the problem of poor heat conduction effect and cannot solve the problem of poor contact between the Bar strip to be tested and the test stage. Therefore, the poor contact between the Bar strip to be tested and the test stage and the poor heat conduction effect are technical problems that need to be solved urgently. Summary of the Invention

[0006] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a pressing structure for enhancing the contact between a high-power Bar strip and a test stage, which solves the problems of poor contact between the Bar strip to be tested and the test stage and poor heat conduction effect in the prior art.

[0007] The technical solution of the present invention is realized as follows: A pressing structure for enhancing the contact between a high-power Bar strip and a test stage includes a driving component arranged on the test stage. A downward pressing sheet is arranged on the driving component. When the Bar strip contacts the test stage, the driving component can drive the downward pressing sheet to press the Bar strip tightly on the test stage.

[0008] Preferably, the driving component is a linear telescopic mechanism. The telescopic end of the linear telescopic mechanism is connected to the downward pressing sheet, and the linear telescopic mechanism can drive the downward pressing sheet to move towards the test stage in the vertical direction.

[0009] Preferably, the linear telescopic mechanism is an electric telescopic rod, a hydraulic cylinder or a cylinder.

[0010] Preferably, the driving component is a reciprocating motor linear telescopic mechanism. The telescopic end of the reciprocating motor linear telescopic mechanism is connected to the downward pressing sheet, and the reciprocating motor linear telescopic mechanism can drive the downward pressing sheet to move towards the test stage in the vertical direction.

[0011] Preferably, the reciprocating motor linear telescopic mechanism includes a motion motor arranged on the test stage. The output end of the motion motor is connected with a cam. A support rod is slidably connected to the test stage. A spring for lifting the downward pressing sheet is arranged on the support rod. The spring is sleeved on the support rod. One end of the spring abuts against the top of the support rod, and the other end abuts against the test stage. The downward pressing sheet is located at the top of the support rod. The bottom of the support rod is connected with a base, and the cam abuts against the base.

[0012] Preferably, two support rods are arranged oppositely on the test stage. Two downward pressing sheets are respectively arranged oppositely on the two support rods. The bottoms of the two support rods are connected through a base, and the cam abuts against the middle of the base.

[0013] Preferably, the lower pressing tablet is integrally formed by stamping.

[0014] Preferably, a crimping plate is integrally connected to the end of the lower pressing tablet for pressing the Bar strip.

[0015] Preferably, the lower pressing tablet is detachably connected to the top of the support rod.

[0016] Preferably, the lower pressing tablet is provided with a fixing hole, the top of the support rod is threadedly connected with a screw, and the fixing hole is adapted to the screw; the fixing hole is an oval hole.

[0017] In the utility model, a driving component and a lower pressing tablet are arranged on the test stage. When the Bar strip to be tested contacts the test stage, the driving component is started, and the driving component drives the lower pressing tablet to press the Bar strip tightly on the test stage, further reducing the contact gap between the Bar strip and the test stage. After the contact gap is reduced, the contact performance between the Bar strip to be tested and the test stage is improved, thereby improving the heat conduction effect, enabling the heat generated during the Bar strip test to be quickly exported, and avoiding the situation that the performance test result of the Bar strip is affected by high temperature and misjudgment is formed. Description of the Drawings

[0018] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram when the lower pressing tablet of the present utility model is lifted.

[0020] Figure 2 It is a schematic diagram when the lower pressing tablet of the present utility model is pressed down.

[0021] Figure 3 It is a schematic connection diagram of the support rod and the lower pressing tablet of the present utility model.

[0022] Figure 4 It is a diagram of the actual test result of the Bar strip when the lower pressing tablet of the present utility model is lifted.

[0023] Figure 5 It is a diagram of the actual test result of the Bar strip when the lower pressing tablet of the present utility model is pressed down.

[0024] In the figure, 1 is the lower pressing tablet, 2 is the test stage, 3 is the spring, 4 is the support rod, 5 is the base, 6 is the cam, 7 is the motion motor, 8 is the fixing hole, 9 is the crimping plate, 10 is the screw, and 11 is the fixing hole. Detailed implementation manners

[0025] 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. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. 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 protection scope of the present utility model.

[0026] Embodiment 1, a pressing sheet structure for enhancing the contact between a high-power Bar strip and a test stage, as shown in Figure 1 、 Figure 2 、 Figure 4 and Figure 5 It includes a driving component arranged on the test stage 2, and a pressing sheet 1 is arranged on the driving component. When the Bar strip contacts the test stage 2, the driving component can drive the pressing sheet 1 to press the Bar strip tightly on the test stage 2. By arranging the driving component and the pressing sheet 1 on the test stage 2, when the Bar strip to be tested contacts the test stage 2, the driving component is started, and the driving component drives the pressing sheet 1 to press the Bar strip tightly on the test stage 2, further reducing the contact gap between the Bar strip to be tested and the test stage 2. After the contact gap is reduced, the contact performance between the Bar strip to be tested and the test stage is improved, thereby improving the heat conduction effect, enabling the heat generated during the Bar strip test to be quickly exported, avoiding the situation that the performance test result of the Bar strip is affected by high temperature and forming misjudgment, and solving the technical problem of poor contact between the Bar strip to be tested and the test stage and poor heat conduction effect in the prior art.

[0027] Wherein Figure 4 is the actual test result diagram of the Bar strip to be tested when the pressing sheet 1 is lifted. Since only relying on the negative pressure of the adsorption holes to make the Bar strip to be tested contact the test stage, the heat dissipation pressure of the Bar strip to be tested is relatively large when powered on, and the accumulated heat will cause the LIV of the test Bar strip to have a Kink due to the thermal effect. In actual use, the Chips are all attached to the substrate, and the heat dissipation effect is much better than the current situation. Therefore, the test result at this time is quite different from the actual use conditions, and many Chips that perform well are misjudged as Chips that perform poorly.

[0028] Figure 5 is the actual test result diagram of the Bar strip to be tested when the pressing sheet 1 is pressed down. The test conditions and the Bar strip used for testing are both the same as Figure 4The conditions remain the same. However, at this time, the lower pressing piece presses down to enhance the contact between the high-power Bar strip and the test stage. Due to good contact, the heat generated by the high-power Bar to be tested when powered on will be promptly conducted out by the test stage, and the Kink rate caused by the thermal effect is greatly reduced. With enhanced heat dissipation, the test results are closer to the actual usage situation, and the probability of misjudgment of the test results can be greatly reduced. Figure 4 and Figure 5 In comparison, it reflects that by using the driving component in this application to drive the lower pressing piece 1 to press the Bar strip tightly on the test stage 2, the contact gap between the measured Bar strip and the test stage 2 is further reduced. For the accumulated heat, the probability of Kink occurring in the LIV of the test Bar strip due to the thermal effect is greatly reduced. Furthermore, it proves that the contact performance between the Bar strip to be tested and the test stage is improved, and the heat conduction effect is indeed effectively improved.

[0029] Embodiment 2: On the basis of Embodiment 1, a pressing piece structure for enhancing the contact between a high-power Bar strip and a test stage. The driving component is a linear telescopic mechanism, and the telescopic end of the linear telescopic mechanism is connected to the lower pressing piece 1. The linear telescopic mechanism can drive the lower pressing piece 1 to move towards the test stage 2 in the vertical direction. By using the vertical movement of the linear telescopic mechanism, the purpose of moving the lower pressing piece 1 closer to or away from the test stage 2 is achieved. When the linear telescopic mechanism drives the lower pressing piece 1 closer to the test stage 2, the Bar strip can be pressed tightly on the test stage 2, and the contact gap between the measured Bar strip and the test stage 2 is further reduced. In this embodiment, the linear telescopic mechanism is selected because it has a simple structure and can be directly controlled by a controller, facilitating automated operation.

[0030] Embodiment 3: On the basis of Embodiment 2, a pressing piece structure for enhancing the contact between a high-power Bar strip and a test stage. The linear telescopic mechanism is an electric telescopic rod, a hydraulic cylinder, or a pneumatic cylinder. The electric telescopic rod, the hydraulic cylinder, or the pneumatic cylinder has a simple structure and can all be controlled by a controller, facilitating automated operation.

[0031] Embodiment 4: On the basis of Embodiment 1, a pressing piece structure for enhancing the contact between a high-power Bar strip and a test stage, as Figure 1 and Figure 2As shown, the driving component is a reciprocating motor linear telescopic mechanism, the telescopic end of the reciprocating motor linear telescopic mechanism is connected to the lower pressing plate 1, and the reciprocating motor linear telescopic mechanism can drive the lower pressing plate 1 to move in the vertical direction toward the test platform 2. The reciprocating motor linear telescopic mechanism is set to meet the high-precision requirements considered during the design. The reciprocating motor linear telescopic mechanism is used to control the movement of the lower pressing plate 1. On the one hand, the reciprocating motor linear telescopic mechanism has a simple structure and is easy to maintain. On the other hand, the reciprocating motor linear telescopic mechanism has high movement accuracy and can meet some high-precision application requirements.

[0032] Example 5, based on Example 4, a sheeting structure for enhancing the contact between the high-power Bar strip and the test carrier, such as Figure 1 and Figure 2 As shown, the reciprocating motor linear telescopic mechanism includes a motion motor 7 arranged on the test platform 2, the output end of the motion motor 7 is connected to a cam 6, the test platform 2 is slidably connected to a support rod 4, the support rod 4 is provided with a spring 3 for lifting the downward pressing plate 1, the spring 3 is sleeved on the support rod 4, one end of the spring 3 abuts the top of the support rod 4, and the other end abuts the test platform 2, and the spring 3 is provided to achieve the upward movement and reset of the downward pressing plate 1 in the vertical direction. The downward pressing plate 1 is located at the top of the support rod 4, and the bottom of the support rod 4 is connected to a base 5, and the cam 6 abuts against the base 5. When the motion motor 7 controls the cam 6 to rotate to the long axis of the cam, the base 5 will move downward, driving the support rod 4 and the downward pressing plate 1 to move downward, and the front end of the downward pressing plate 1 will press down the Bar to be tested. At this time, the Bar bar to be tested not only relies on the negative pressure of the adsorption hole to contact with the test carrier 2, but the Bar bar is also pressed down by the downward pressing plate 1, so that the contact between the Bar bar to be tested and the test carrier 2 is enhanced, thereby improving the thermal conductivity effect. The heat generated by the high-power Bar bar to be tested when powered on can be promptly discharged by the test carrier 2, and the test results are closer to actual usage and more accurate.

[0033] Example 6, based on Example 5, a sheeting structure for enhancing the contact between the high-power Bar strip and the test carrier, such as Figure 1 and Figure 2 As shown, two support rods 4 are arranged relatively on the test platform 2, and two downward pressing plates 1 are arranged relatively on the two support rods 4 respectively. The bottoms of the two support rods 4 are connected by a base 5, and the cam 6 abuts against the middle of the base 5. That is, two downward pressing plates 1 are arranged on the test platform 2, and the two downward pressing plates 1 move synchronously with the two support rods 4 respectively, and the two downward pressing plates 1 correspond to the two ends of the Bar bar respectively. By using two downward pressing plates 1 to press the two ends of the Bar bar respectively, it can effectively ensure that the force on the Bar bar is more uniform, and avoid the damage of the Bar bar caused by uneven force on the Bar bar.

[0034] Example 7. Based on Example 6, a pressing sheet structure for enhancing the contact between a high-power Bar strip and a test stage, as shown in Figure 1 , Figure 2 and Figure 3 . The lower pressing sheet 1 is integrally formed by stamping. The integrally formed lower pressing sheet 1 can ensure that the structures of several lower pressing sheets 1 are consistent. When using two lower pressing sheets 1 to press the two ends of the Bar strip respectively, it is beneficial to ensure the consistency of the force applied by the lower pressing sheets at both ends of the Bar strip.

[0035] Example 8. Based on Example 7, a pressing sheet structure for enhancing the contact between a high-power Bar strip and a test stage, as shown in Figure 3 . A pressing plate 9 is integrally connected to the end of the lower pressing sheet 1 for pressing the Bar strip. The pressing plate 9 is formed by stamping at the end of the lower pressing sheet 1, that is, the end of the lower pressing sheet 1 is a horizontal plane. When the lower pressing sheet 1 is set like this and contacts the Bar strip to be tested, the contact area of the pressure on the Bar strip is increased, avoiding the situation that the Bar strip is damaged due to too small contact area.

[0036] Example 9. Based on Example 7 or 8, a pressing sheet structure for enhancing the contact between a high-power Bar strip and a test stage, as shown in Figure 3 . The lower pressing sheet 1 is detachably connected to the top of the support rod 4. Once the lower pressing sheet 1 is deformed, the lower pressing sheet 1 is replaced in time, which is beneficial to ensuring the pressure of the lower pressing sheet 1 on the Bar strip to be tested. The detachable connection is convenient for disassembling and replacing the lower pressing sheet 1 on the support rod 4, and thus is beneficial to ensuring the pressure of the lower pressing sheet 1 on the Bar strip to be tested, making the test results more accurate.

[0037] Example 10. Based on Example 9, a pressing sheet structure for enhancing the contact between a high-power Bar strip and a test stage, as shown in Figure 3 . A fixing hole 8 is provided on the lower pressing sheet 1, and a screw 10 is threadedly connected to the top of the support rod 4. The fixing hole is adapted to the screw 10; the fixing hole 8 is an oval hole. The detachable connection between the lower pressing sheet 1 and the support rod 4 is realized by passing the screw 10 through the fixing hole 8 and threadedly connecting it to the support rod 4. The fixing hole 8 is an oval hole, so that the fixing position of the screw 10 is adjustable, thereby the position of the front end of the lower pressing sheet 1 pressing down can be adjusted. The operator can flexibly adjust the fixing position of the lower pressing sheet 1 according to the length of the Bar strip to be tested, so that the present utility model can be applicable to the testing of Bar strips of various lengths.

[0038] When Example 10 is implemented, the support rod 4, the base 5, the cam 6 and the motion motor 7 are successively installed on the test stage 2, such that the base 5 abuts against the cam 6. Then, the stamping-molded lower pressing sheet 1 is fixed to the support rod 4 by screws 10. Then, the Bar strip to be tested is brought into contact with the test stage 2 by the negative pressure of the adsorption holes. At the same time, the motion motor 7 is started. When the motion motor 7 controls the cam 6 to rotate to the long axis of the cam, the spring 3 is compressed, the base 5 moves downward, thereby driving the support rod 4 and the lower pressing sheet 1 to move downward. The front end of the lower pressing sheet 1 presses the Bar strip to be tested downward. At this time, the Bar strip to be tested not only contacts the test stage 2 by the negative pressure of the adsorption holes, but also the Bar strip is pressed downward by the lower pressing sheet 1, so that the contact between the Bar strip to be tested and the test stage 2 is enhanced, and thus the heat conduction effect is improved. When the motion motor 7 controls the cam 6 to rotate to the short axis of the cam, the spring 3 extends, driving the base 5 to move upward, thereby driving the support rod 4 and the lower pressing sheet 1 to move upward. The front end of the lower pressing sheet 1 is disengaged from the Bar strip to be tested. At this time, the Bar strip to be tested only contacts the test stage 2 by the negative pressure of the adsorption holes. By closing the negative pressure of the adsorption holes, the Bar strip to be tested can be removed.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, 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 sheet pressing structure for enhancing the contact between a high-power bar and a test carrier, characterized in that: The invention comprises a driving component arranged on a test platform (2), wherein a pressing plate (1) is provided on the driving component, and when a bar bar contacts the test platform (2), the driving component can drive the pressing plate (1) to press the bar bar onto the test platform (2).

2. The sheet pressing structure for enhancing the contact between the high-power Bar and the test platform according to claim 1 is characterized in that: The driving component is a linear telescopic mechanism, the telescopic end of the linear telescopic mechanism is connected to the downward pressing plate (1), and the linear telescopic mechanism can drive the downward pressing plate (1) to move in a vertical direction toward the test carrier (2).

3. The sheet pressing structure for enhancing the contact between the high-power Bar and the test platform according to claim 2 is characterized in that: The linear telescopic mechanism is an electric telescopic rod or a hydraulic cylinder or a pneumatic cylinder.

4. The sheet pressing structure for enhancing the contact between the high-power Bar and the test platform according to claim 1, characterized in that: The driving component is a reciprocating motor linear telescopic mechanism, the telescopic end of the reciprocating motor linear telescopic mechanism is connected to the downward pressing plate (1), and the reciprocating motor linear telescopic mechanism can drive the downward pressing plate (1) to move in a vertical direction toward the test platform (2).

5. The sheet pressing structure for enhancing the contact between the high-power Bar and the test platform according to claim 4 is characterized in that: The reciprocating motor linear telescopic mechanism comprises a motion motor (7) arranged on a test platform (2), the output end of the motion motor (7) is connected to a cam (6), a support rod (4) is slidably connected to the test platform (2), a spring (3) for lifting a downward pressing plate (1) is provided on the support rod (4), the downward pressing plate (1) is located at the top of the support rod (4), the bottom of the support rod (4) is connected to a base (5), and the cam (6) is in contact with the base (5).

6. The sheet pressing structure for enhancing the contact between the high-power Bar and the test platform according to claim 5, characterized in that: Two support rods (4) are arranged opposite to each other on the test platform (2), and two downward pressing plates (1) are arranged opposite to each other on the two support rods (4), respectively. The bottoms of the two support rods (4) are connected via a base (5), and the cam (6) abuts against the middle of the base (5).

7. The sheet pressing structure for enhancing the contact between the high-power Bar and the test platform according to claim 6, characterized in that: The lower pressing sheet (1) is integrally stamped and formed.

8. The sheet pressing structure for enhancing the contact between the high-power Bar and the test platform according to claim 7, characterized in that: The end of the lower pressing sheet (1) used for pressing the Bar strip is integrally connected with a pressing plate (9).

9. The sheet pressing structure for enhancing the contact between a high-power Bar and a test carrier according to claim 7 or 8, characterized in that: The downward pressing plate (1) is detachably connected to the top of the support rod (4).

10. The sheet pressing structure for enhancing the contact between the high-power Bar and the test platform according to claim 9, characterized in that: The lower pressing plate (1) is provided with a fixing hole (8), the top of the support rod (4) is threadedly connected with a screw (10), and the fixing hole (8) is compatible with the screw (10); the fixing hole (8) is an elliptical hole.

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