A semiconductor device driving circuit and a testing method thereof

Abstract

The present invention discloses a semiconductor device driving circuit and a test method thereof, comprising a comparator A1, a first resistor R1, a second resistor R2 and a light emitting diode group. In the present invention, when a light emitting diode is short-circuited or damaged, the elastic force of the torsion spring rebounds, the torsion spring drives the entire placement frame to rotate clockwise by using the clamp head, and the spring elastic force pulls back, so that the two extrusion plates gradually move away from each other, at which time the connecting pipe returns to its original state, the connection pressure between the connecting pipe and the light emitting diode is reduced, the placement frame rotates clockwise inside the screw groove by using the screw strip, and the elastic force of the torsion spring causes the placement frame to move up during the rotation process, until the screw strip is separated from the screw groove, the elastic force of the torsion spring bounces the entire placement frame from the inside of the through groove, so that the damaged light emitting diode can be directly taken out from the test device, the continuity of the test of multiple light emitting diodes is ensured, and the accuracy of the test of the remaining light emitting diodes is improved at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit testing, and in particular relates to a semiconductor device driving circuit and a testing method thereof. Background Art

[0002] LED has the advantages of small size and low cost, so people often use LED for signal detection of some systems, and judge whether the signal in the system is connected by whether the LED light is on during system testing. As a semiconductor device working at low voltage and direct current, LED needs to work in a constant current environment. The general system power supply is often powered by AC power. If the LED needs to light up during system detection, the AC voltage needs to be rectified and controlled by the drive circuit for use by the LED. From the electrical characteristics of LED, it can be seen that the average forward current of LED shows a large linear increase with the increase of forward voltage. After the LED is forward-conducted, the change of its forward voltage will cause a large change in the current on the LED, and the current has a great influence on the junction temperature of the LED. Excessive current can easily cause the LED to be damaged due to the increase of junction temperature.

[0003] When an LED is damaged, the entire circuit needs to be cut off before the damaged LED can be taken out. However, after the circuit is cut off, other normal LEDs may be damaged, and the measurement accuracy of the LED cannot be guaranteed.

[0004] Therefore, it is necessary to invent a semiconductor device driving circuit and a testing method thereof to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a semiconductor device driving circuit and a testing method thereof to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a semiconductor device driving circuit, comprising a comparator A1, a first resistor R1, a second resistor R2 and a light-emitting diode group, wherein the light-emitting diode group comprises a plurality of light-emitting diodes connected in parallel, and each light-emitting diode is connected in series with a stepping motor, one end of the first resistor R1 is connected to the inverting input end of the comparator A1, the other end of the first resistor R1 is connected to the line between the output end of the comparator A1 and the output end of the light-emitting diode group, one end of the second resistor R2 is connected to the line between the inverting input end of the comparator A1 and the first resistor R1, the other end of the second resistor R2 is grounded, the same-phase input end of the comparator A1 is connected to a trigger voltage input line, and the comparator A1 is connected to a DC voltage input line, and the light-emitting diode group is connected to the comparator A1 via the DC voltage input line.

[0007] The present invention also provides a testing method for a semiconductor device driving circuit, including a testing device, wherein the testing device includes a base plate, through tubes are provided at the centers of both sides of the base plate, a plurality of wires arranged in parallel are provided inside the through tubes, a plurality of grooves are provided on the top surface of the base plate, a cover plate is provided on the top of the base plate, a through groove corresponding to the plurality of grooves is provided on the top surface of the cover plate, a placement frame is provided inside the through groove, a screw strip is provided on the outer side surface of the circumference of the placement frame, a screw groove corresponding to the screw strip is provided on the inner side wall of the through groove, and a light-emitting diode is placed correspondingly on the inner side of the placement frame.

[0008] Furthermore, rotating sleeves are rotatably connected on both sides of the bottom of the placement frame, and a connecting tube that is rotatably connected to the bottom end of the rotating sleeve is provided on the inner side of the groove. A rubber sleeve is sleeved on the surface of the connecting tube, and slots corresponding to the pins of the light-emitting diode are provided at the center of the rotating sleeve and the connecting tube. The rotating sleeve is made of insulating material, and the connecting tube is configured as an elastic metal tube, and the pins of the light-emitting diode are electrically connected to the connecting tube.

[0009] Furthermore, an extrusion plate corresponding to the connecting tube is provided on the inner side of the groove, and the end of the wire is fixedly connected to the bottom of the outer side of the extrusion plate, the extrusion plate is made of metal material, a slider is fixedly connected to the circumferential side of the connecting tube, and an inner slide groove corresponding to the slider is provided on the inner side of the extrusion plate, both ends of the extrusion plate are fixedly connected with a ring, and a fixing rod is slidably sleeved inside the ring, the two fixing rods are respectively located inside the two side walls of the groove, and the fixing rod is rotatably connected to the groove, and the fixing rod is set as a threaded rod.

[0010] Furthermore, both side walls of the groove are provided with grooves corresponding to the fixing rod, the extrusion plate is slidably matched with the fixing rod by means of a sleeve ring, and the end surfaces of both ends of the extrusion plate are respectively fitted with the two side walls of the groove.

[0011] Furthermore, both ends of the fixing rod are spirally sleeved with fixing frames, a limiting groove is provided at the center of the outer side surface of the extrusion plate, two limiting frames are slidably clamped on both sides of the center of the limiting groove, and an elastic plate is provided between the two limiting frames, the limiting frames correspond to the fixing frames one by one, and the limiting frames and the fixing frames are rotatably connected through a rotating rod;

[0012] A spring is arranged between the fixing frame and the collar, one end of the spring is fixedly connected to the inner side surface of the fixing frame, and the other end of the spring is fixedly connected to the side surface of the collar.

[0013] Furthermore, a clamping head is provided at the center of the bottom surface of the placement frame, and a stepping motor is provided on the inner side of the center of the bottom surface of the groove. The output end of the stepping motor is correspondingly clamped to the bottom end of the clamping head by means of a square and round rod, and a torsion spring is sleeved on the surface of the square and round rod. The top end of the torsion spring is fixedly connected to the bottom surface of the clamping head, and the bottom end of the torsion spring is fixedly connected to the top surface of the stepping motor.

[0014] Furthermore, corresponding grooves are provided inside both sides of the bottom plate, and connecting frames are placed inside the corresponding grooves. The connecting frame is arranged as a trident structure as a whole, and one end of the connecting frame is inside the through tube, and the three-pronged ends of the connecting frame are respectively fitted with the bottom of the outer side surfaces of the three extruded plates, and multiple wires are respectively connected to the multiple extruded plates by using the connecting frame, and through holes corresponding to the connecting frame are provided at both ends of the groove.

[0015] Further, the following steps are included:

[0016] S1. Prepare three identical light-emitting diodes and test devices that match the light-emitting diodes, and place the two pins of the light-emitting diodes into the two corresponding connecting tubes at the bottom of the placement frame;

[0017] S2, after the screw strips on the outer side of the circumference of the placement frame are aligned with the screw grooves on the top surface of the cover plate, and the bottom of the placement frame is correspondingly clamped with the top of the square rod, the stepper motor is started, and the stepper motor drives the placement frame to rotate counterclockwise using the square rod, and the placement frame moves downward during the counterclockwise rotation of the screw groove surface using the screw strips, and the placement frame squeezes and twists the torsion spring on the surface of the square rod;

[0018] S3, when the placement frame rotates, the placement frame drives the connecting tube to move, and at this time, the connecting tube slides inside the inner slide groove of the extrusion plate using the slider, and the distance between the two connecting tubes increases, and the placement frame pulls the two extrusion plates with the two connecting tubes, and the two extrusion plates approach each other until the two extrusion plates respectively contact the rubber sleeves on the surfaces of the connecting tubes arranged opposite to each other;

[0019] S4, when the two extrusion plates approach each other, due to the threaded fit between the fixing rod and the fixing frame to limit the spring and the outer end of the rotating rod, the extrusion plate uses the collar to stretch the spring while the extrusion plate uses the limiting groove to pull the limiting frame. At this time, the rotating rod rotates, and the two limiting frames move away from each other during the sliding process inside the limiting groove, which facilitates the two extrusion plates to squeeze the corresponding connecting tubes respectively. At this time, the connecting tube is squeezed and deformed, thereby improving the contact stability effect between the connecting tube and the LED pin;

[0020] S5. When the light-emitting diode is working normally, the DC voltage input on the DC voltage input line is mainly used as the power supply voltage of the light-emitting diode, so that the power supply voltage of the light-emitting diode is stable, so that the light-emitting diode will not be damaged due to voltage changes on the light-emitting diode. If the light-emitting diode is short-circuited or damaged, the stepper motor corresponding to the light-emitting diode stops working, the elastic force of the torsion spring rebounds, and the torsion spring drives the entire placement frame to rotate clockwise using the clamping head, and the spring elastic force pulls back, so that the two extrusion plates gradually move away. At this time, the connecting tube returns to its original state, and the connection pressure between the connecting tube and the light-emitting diode is reduced. When the placement frame rotates clockwise, the rotating sleeve is used to drive the two connecting tubes to move. The two connecting tubes slide on the inner side of the inner groove of the extrusion plate using the slider, and the placement frame rotates clockwise on the inner side of the screw groove using the screw strip, and the elastic force of the torsion spring causes the placement frame to move up during the rotation process until the screw strip is separated from the screw groove. At this time, the elastic force of the torsion spring bounces the entire placement frame from the inner side of the through groove, and the light-emitting diode pin on the inner side of the placement frame is separated from the top of the connecting tube;

[0021] S6. When the light emitting diode is damaged, the placement frame and the light emitting diode pop up from the top of the cover, thereby avoiding damage to the stepper motor due to damage to the light emitting diode.

[0022] Technical effects and advantages of the present invention:

[0023] 1. When the light-emitting diode is short-circuited or damaged, the elastic force of the torsion spring rebounds, and the torsion spring drives the entire placement frame to rotate clockwise using the clamping head, and the spring elastic force pulls back, so that the two extrusion plates gradually move away from each other. At this time, the connecting tube returns to its original state, and the connection pressure between the connecting tube and the light-emitting diode is reduced. The placement frame rotates clockwise on the inner side of the screw groove using the screw strip, and the elastic force of the torsion spring causes the placement frame to move up during the rotation process, until the screw strip is separated from the screw groove, and the elastic force of the torsion spring bounces the entire placement frame from the inner side of the through groove, so that the damaged light-emitting diode can be directly taken out from the test device, thereby ensuring the continuity of the test of multiple light-emitting diodes and improving the accuracy of the test of the remaining light-emitting diodes.

[0024] 2. In the present invention, when the placement frame is rotated, the placement frame drives the connecting tube to move by the rotating sleeve, avoiding the use of the pins of the light-emitting diode to drive the connecting tube to move, and preventing the pins of the light-emitting diode from being damaged during the rotation process. In the process of the two extrusion plates approaching each other, due to the threaded cooperation between the fixed rod and the fixed frame to limit the spring and the outer end of the rotating rod, the extrusion plate uses the sleeve to stretch the spring while the extrusion plate uses the limiting groove to pull the limiting frame. At this time, the rotating rod rotates, and the two limiting frames slide away from each other in the process of sliding inside the limiting groove, which facilitates the two extrusion plates to squeeze the relative connecting tubes respectively. At this time, the connecting tube is squeezed and deformed, thereby improving the contact stability effect between the connecting tube and the pins of the light-emitting diode.

[0025] 3. In the present invention, since the thread grooves of the fixing frames at both ends of the fixing rod are in opposite directions, the fixing rod can be rotated. Since the extrusion plate uses the limiting frame and the rotating rod to limit the fixing frame in the vertical direction, the spiral effect of the fixing rod and the fixing frame causes the fixing frame to slide on the surface of the fixing rod, thereby changing the relative distance between the two fixing frames, and also relatively changing the relative distance between the two extrusion plates, so that the entire test device can test light-emitting diodes of different diameters.

[0026] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A semiconductor device driving circuit diagram according to an embodiment of the present invention is shown;

[0029] Figure 2 A schematic diagram showing the overall structure of a semiconductor device testing device according to an embodiment of the present invention is shown;

[0030] Figure 3 A schematic diagram of the structure of internal components of a testing device according to an embodiment of the present invention is shown;

[0031] Figure 4 The embodiment of the present invention is shown Figure 3 A magnified view of the structure of part A;

[0032] Figure 5 It shows a schematic diagram of the overall structure of the internal connecting frame of the testing device according to an embodiment of the present invention;

[0033] In the figure: 1. trigger voltage input line; 2. DC voltage input line; 3. bottom plate; 4. through pipe; 5. groove; 6. cover plate; 7. through slot; 8. placement frame; 9. screw strip; 10. screw slot; 11. rotating sleeve; 12. connecting pipe; 13. rubber sleeve; 14. extrusion plate; 15. slider; 16. inner slide groove; 17. collar; 18. fixing rod; 19. fixing frame; 20. limiting groove; 21. limiting frame; 22. elastic plate; 23. rotating rod; 24. spring; 25. chuck; 26. stepping motor; 27. square and round rod; 28. torsion spring; 29. ​​corresponding slot; 30. connecting frame; 31. through hole. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides a semiconductor device driving circuit, such as Figure 1 As shown, it includes a comparator A1, a first resistor R1, a second resistor R2 and a light emitting diode group, wherein the light emitting diode group includes a plurality of light emitting diodes connected in parallel, such as LEDs, and each light emitting diode is connected in series with a stepping motor 26, namely M in the figure, one end of the first resistor R1 is connected to the inverting input end of the comparator A1, the other end of the first resistor R1 is connected to the line between the output end of the comparator A1 and the output end of the light emitting diode group, one end of the second resistor R2 is connected to the line between the inverting input end of the comparator A1 and the first resistor R1, the other end of the second resistor R2 is grounded, the in-phase input end of the comparator A1 is connected to a trigger voltage input line 1, and the comparator A1 is connected to a DC voltage input line 2, and the light emitting diode group is connected to the comparator A1 via the DC voltage input line 2.

[0036] The present invention also provides a method for testing a semiconductor device driving circuit. Figure 1-3 As shown, the testing device includes a base plate 3, through tubes 4 are provided at the centers of both sides of the base plate 3, a plurality of wires arranged in parallel are provided inside the through tubes 4, a plurality of grooves 5 are provided on the top surface of the base plate 3, a cover plate 6 is provided on the top of the base plate 3, a through groove 7 corresponding to the plurality of grooves 5 is provided on the top surface of the cover plate 6, a placement frame 8 is provided inside the through groove 7, a screw strip 9 is provided on the outer side surface of the circumference of the placement frame 8, a screw groove 10 corresponding to the screw strip 9 is provided on the inner wall of the through groove 7, and a light-emitting diode is placed correspondingly on the inner side of the placement frame 8.

[0037] exist Figure 2 and Figure 3In the embodiment, the bottom of the placement frame 8 is rotatably engaged with a rotating sleeve 11 on both sides, the inner side of the groove 5 is provided with a connecting tube 12 rotatably engaged with the bottom end of the rotating sleeve 11, the surface of the connecting tube 12 is sleeved with a rubber sleeve 13, the center of the rotating sleeve 11 and the connecting tube 12 are both provided with slots corresponding to the pins of the light-emitting diode, the rotating sleeve 11 is made of insulating material, the connecting tube 12 is set as an elastic metal tube, and the pins of the light-emitting diode are electrically connected to the connecting tube 12. When the placement frame 8 rotates, the placement frame 8 uses the rotating sleeve 11 to drive the connecting tube 12 to move, avoiding using the pins of the light-emitting diode to drive the connecting tube 12 to move, and preventing the pins of the light-emitting diode from being damaged during the rotation process. When the two extrusion plates 14 approach each other, due to the threaded cooperation between the fixing rod 18 and the fixing frame 19, the outer ends of the spring 24 and the rotating rod 23 are restricted. At the same time, the extrusion plate 14 uses the ring 17 to stretch the spring 24, and the extrusion plate 14 uses the limiting groove 20 to pull the limiting frame 21. At this time, the rotating rod 23 rotates, and the two limiting frames 21 move away from each other during the sliding process inside the limiting groove 20, which facilitates the two extrusion plates 14 to squeeze the corresponding connecting tubes 12 respectively. At this time, the connecting tube 12 is squeezed and deformed, thereby improving the contact stability effect between the connecting tube 12 and the light-emitting diode pin.

[0038] exist Figure 3In the embodiment, an extrusion plate 14 corresponding to the connecting tube 12 is provided on the inner side of the groove 5, and the end of the wire is fixedly connected to the bottom of the outer side of the extrusion plate 14, the extrusion plate 14 is made of metal material, a slider 15 is fixedly connected to the circumferential side of the connecting tube 12, and an inner slide groove 16 corresponding to the slider 15 is provided on the inner side of the extrusion plate 14. Both ends of the extrusion plate 14 are fixedly connected with a ring 17, and a fixing rod 18 is slidably sleeved inside the ring 17. The two fixing rods 18 are respectively located inside the two side walls of the groove 5, and the fixing rod 18 is rotatably connected to the groove 5, and the fixing rod 18 is set as a threaded rod. When the light-emitting diode is short-circuited or damaged, the stepper motor 26 corresponding to the light-emitting diode stops working, and the stepper motor 26 cannot limit the square rod 27 at the output end. The elastic force of the torsion spring 28 rebounds, and the torsion spring 28 drives the entire placement frame 8 to rotate clockwise using the clamp 25, and the spring 24 pulls back, so that the two extrusion plates 14 gradually move away from each other. At this time, the connecting tube 12 returns to its original state, and the connection pressure between the connecting tube 12 and the light-emitting diode is reduced. When the placement frame 8 rotates clockwise, the rotating sleeve 11 is used to drive the two connecting tubes 12 to move, and the two connecting tubes 12 are used to The slider 15 is used to slide inside the inner groove 16 of the extrusion plate 14, and the placement frame 8 is rotated clockwise inside the screw groove 10 by the screw strip 9, and the elastic force of the torsion spring 28 makes the placement frame 8 move up during the rotation process until the screw strip 9 is separated from the screw groove 10. At this time, the elastic force of the torsion spring 28 bounces the entire placement frame 8 from the inside of the through groove 7. At this time, the LED pin inside the placement frame 8 is separated from the top of the connecting tube 12, which is convenient for directly taking out the damaged LED from the test device, ensuring the continuity of multiple LED tests, and improving the accuracy of the remaining LED tests. The two side walls of the groove 5 are provided with grooves corresponding to the fixing rod 18, and the extrusion plate 14 is slidably matched with the fixing rod 18 by the collar 17, and the end faces of the two ends of the extrusion plate 14 are respectively fitted with the two side walls of the groove 5.

[0039] exist Figure 3In the figure, both ends of the fixing rod 18 are spirally sleeved with fixing frames 19, a limiting groove 20 is provided at the center of the outer side surface of the extrusion plate 14, two limiting frames 21 are slidably clamped on both sides of the center of the limiting groove 20, and an elastic plate 22 is provided between the two limiting frames 21, the limiting frames 21 correspond to the fixing frames 19 one by one, and the limiting frames 21 and the fixing frames 19 are rotatably connected through a rotating rod 23; a spring 24 is provided between the fixing frame 19 and the collar 17, one end of the spring 24 is fixedly connected to the inner side surface of the fixing frame 19, and the other end of the spring 24 is fixedly connected to the side surface of the collar 17. When the force applied by the stepper motor 26 to the clamp 25 at the bottom end of the placement frame 8 by the square rod 27 disappears, the elastic force of the spring 24 pulls back and causes the extrusion plate 14 to gradually approach the three-pronged end of the connecting frame 30. At this time, the spiral of the fixing frame 19 and the fixing rod 18 restricts the fixing frame 19, and the fixing frame 19 cannot move. In the process of the extrusion plate 14 approaching the fixing frame 19, the rotating rod 23 is used to rotate so that the two limiting frames 21 slide close to each other on the inner side of the limiting groove 20. When the limiting frame 21 hits the elastic plate 22, the elastic force of the elastic plate 22 is used to reduce the impact force of the extrusion plate 14 and the three-pronged end of the connecting frame 30.

[0040] Since the thread grooves of the fixing frames 19 at both ends of the fixing rod 18 are in opposite directions, the fixing rod 18 can be rotated. Since the extrusion plate 14 uses the limiting frame 21 and the rotating rod 23 to limit the fixing frame 19 in the vertical direction, the spiral effect of the fixing rod 18 and the fixing frame 19 makes the fixing frame 19 slide on the surface of the fixing rod 18, thereby changing the relative distance between the two fixing frames 19, and also relatively changing the relative distance between the two extrusion plates 14, so that the entire test device can test light-emitting diodes with different diameters.

[0041] exist Figure 3 and Figure 4 In the embodiment, a clamping head 25 is arranged at the center of the bottom surface of the placement frame 8, and a stepping motor 26 is arranged inside the center of the bottom surface of the groove 5. The output end of the stepping motor 26 is correspondingly clamped to the bottom end of the clamping head 25 by a square rod 27. A torsion spring 28 is sleeved on the surface of the square rod 27. The top end of the torsion spring 28 is fixedly connected to the bottom surface of the clamping head 25, and the bottom end of the torsion spring 28 is fixedly connected to the top surface of the stepping motor 26. Before the entire placement frame 8 is installed on the inner side of the through groove 7 of the cover plate 6, the bottom end of the torsion spring 28 is bonded to the top end of the stepping motor 26, and then the stepping motor 26 is started. When the stepping motor 26 works, the square rod 27 is used to drive the placement frame 8 to rotate counterclockwise. The placement frame 8 moves downward in the process of counterclockwise rotation of the surface of the screw groove 10 by the screw strip 9, and the placement frame 8 squeezes and twists the torsion spring 28 on the surface of the square rod 27, and the torsion spring 28 is used to provide a rebound force for the rotation and rebound of the placement frame 8.

[0042] exist Figure 5In the embodiment, corresponding grooves 29 are arranged inside the two sides of the bottom plate 3, and a connecting frame 30 is placed inside the corresponding groove 29. The connecting frame 30 is arranged as a trident structure as a whole, and one end of the connecting frame 30 is inside the through pipe 4, and the three-pronged end of the connecting frame 30 is respectively corresponding to the bottom of the outer side of the three extrusion plates 14, and multiple wires are connected to multiple extrusion plates 14 respectively by the connecting frame 30, and through holes 31 corresponding to the connecting frame 30 are arranged at both ends of the groove 5. The three-pronged end of the connecting frame 30 can also limit the extrusion plate 14, thereby limiting the maximum distance between the two extrusion plates 14. The connecting frame 30 is used to limit the wire, and lubricating oil can be introduced into the connecting frame 30 to facilitate the wire to slide inside the connecting frame 30. When the extrusion plate 14 slides on the surface of the fixed rod 18 by the ring 17, the extrusion plate 14 pulls the wire, and the wire slides inside the connecting frame 30, avoiding the wire from contacting with the corresponding groove 29 and the inside of the through hole 31, and avoiding the wire from sliding damage during the sliding process.

[0043] exist Figure 1-Figure 5 The following steps are included:

[0044] S1, prepare three identical light-emitting diodes and a test device that matches the light-emitting diodes, and place two pins of the light-emitting diodes into two corresponding connecting tubes 12 at the bottom of the placement frame 8;

[0045] S2, after the screw strips 9 on the outer side of the circumference of the placing frame 8 are aligned with the screw grooves 10 on the top surface of the cover plate 6, and the bottom of the placing frame 8 is correspondingly clamped with the top of the square rod 27, the stepper motor 26 is started, and the stepper motor 26 drives the placing frame 8 to rotate counterclockwise using the square rod 27, and the placing frame 8 moves downward in the process of counterclockwise rotation of the screw grooves 10 surface using the screw strips 9, and the placing frame 8 squeezes and twists the torsion springs 28 on the surface of the square rod 27;

[0046] S3, when the placement frame 8 rotates, the placement frame 8 drives the connecting tube 12 to move, and at this time, the connecting tube 12 slides inside the inner slide groove 16 of the extrusion plate 14 by means of the slider 15, and the distance between the two connecting tubes 12 increases, and the placement frame 8 pulls the two extrusion plates 14 by means of the two connecting tubes 12, and the two extrusion plates 14 approach each other until the two extrusion plates 14 respectively contact the rubber sleeves 13 on the surfaces of the connecting tubes 12 arranged opposite to each other;

[0047] S4, when the two extrusion plates 14 approach each other, due to the threaded cooperation between the fixing rod 18 and the fixing frame 19, the outer ends of the spring 24 and the rotating rod 23 are restricted. At the same time, the extrusion plate 14 uses the collar 17 to stretch the spring 24, and the extrusion plate 14 uses the limiting groove 20 to pull the limiting frame 21. At this time, the rotating rod 23 rotates, and the two limiting frames 21 move away from each other during the sliding process inside the limiting groove 20, which facilitates the two extrusion plates 14 to squeeze the corresponding connecting tubes 12 respectively. At this time, the connecting tube 12 is squeezed and deformed, thereby improving the contact stability effect between the connecting tube 12 and the LED pin;

[0048] S5. When the light emitting diode is working normally, the DC voltage input on the DC voltage input line 2 is mainly used as the power supply voltage of the light emitting diode, so that the power supply voltage of the light emitting diode is stable, so that the light emitting diode will not be damaged due to the voltage change on the light emitting diode. If the light emitting diode is short-circuited or damaged, the stepper motor 26 corresponding to the light emitting diode stops working, and the elastic force of the torsion spring 28 rebounds. The torsion spring 28 drives the entire placement frame 8 to rotate clockwise by the clamp 25, and the elastic force of the spring 24 pulls back, so that the two extrusion plates 14 gradually move away from each other, and the connecting tube 12 recovers. In the restored state, the connection pressure between the connecting tube 12 and the light-emitting diode is reduced, and when the placement frame 8 rotates clockwise, the rotating sleeve 11 is used to drive the two connecting tubes 12 to move, and the two connecting tubes 12 slide inside the inner groove 16 of the extrusion plate 14 using the slider 15. The placement frame 8 rotates clockwise inside the screw groove 10 using the screw strip 9, and the elastic force of the torsion spring 28 causes the placement frame 8 to move upward during the rotation process until the screw strip 9 is separated from the screw groove 10. At this time, the elastic force of the torsion spring 28 bounces the entire placement frame 8 from the inside of the through groove 7, and at this time, the light-emitting diode pin inside the placement frame 8 is separated from the top of the connecting tube 12;

[0049] S6. When the light emitting diode is damaged, the placement frame 8 and the light emitting diode are popped up from the top of the cover plate 6, thereby preventing the stepper motor 26 from being damaged due to the damage of the light emitting diode.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A semiconductor device driving circuit, characterized in that: The invention comprises a comparator A1, a first resistor R1, a second resistor R2 and a light emitting diode group, wherein the light emitting diode group comprises a plurality of light emitting diodes connected in parallel, and each light emitting diode is connected in series with a stepping motor (26); one end of the first resistor R1 is connected to the inverting input end of the comparator A1, and the other end of the first resistor R1 is connected to the line between the output end of the comparator A1 and the output end of the light emitting diode group; one end of the second resistor R2 is connected to the line between the inverting input end of the comparator A1 and the first resistor R1, and the other end of the second resistor R2 is grounded; the comparator A1 in-phase input end is connected to a trigger voltage input line (1), and the comparator A1 is connected to a direct current voltage input line (2); and the light emitting diode group is connected to the comparator A1 via the direct current voltage input line (2); The test device comprises a bottom plate (3), a through tube (4) is arranged at the center of both sides of the bottom plate (3), a plurality of wires arranged in parallel are arranged inside the through tube (4), a plurality of grooves (5) are arranged on the top surface of the bottom plate (3), a cover plate (6) is arranged on the top of the bottom plate (3), a through groove (7) corresponding to the plurality of grooves (5) is arranged on the top surface of the cover plate (6), a placement frame (8) is arranged inside the through groove (7), a screw strip (9) is arranged on the outer side surface of the circumference of the placement frame (8), a screw groove (10) corresponding to the screw strip (9) is arranged on the inner side wall of the through groove (7), and a light-emitting diode is correspondingly placed inside the placement frame (8); The bottom of the placement frame (8) is rotatably clamped with a rotating sleeve (11) on both sides, the inner side of the groove (5) is provided with a connecting tube (12) rotatably clamped with the bottom of the rotating sleeve (11), the surface of the connecting tube (12) is sleeved with a rubber sleeve (13), the rotating sleeve (11) and the connecting tube (12) are both provided with slots corresponding to the pins of the light-emitting diode at the center, the rotating sleeve (11) is made of insulating material, the connecting tube (12) is provided as an elastic metal tube, and the pins of the light-emitting diode are electrically connected to the connecting tube (12); An extrusion plate (14) corresponding to the connecting tube (12) is arranged on the inner side of the groove (5), and the end of the wire is fixedly connected to the bottom of the outer side of the extrusion plate (14); the extrusion plate (14) is made of metal material; a slider (15) is fixedly connected to the circumferential side of the connecting tube (12); an inner slide groove (16) corresponding to the slider (15) is arranged on the inner side of the extrusion plate (14); both ends of the extrusion plate (14) are fixedly connected to a collar (17); a fixing rod (18) is slidably sleeved inside the collar (17); the two fixing rods (18) are respectively located inside the two side walls of the groove (5), and the fixing rod (18) is rotatably connected to the groove (5); the fixing rod (18) is arranged as a threaded rod; The two side walls of the groove (5) are provided with grooves corresponding to the fixing rod (18); the extrusion plate (14) is slidably matched with the fixing rod (18) by means of a collar (17); and the end surfaces of both ends of the extrusion plate (14) are respectively fitted with the two side walls of the groove (5); The ends of both ends of the fixing rod (18) are spirally sleeved with fixing frames (19); a limiting groove (20) is provided at the center of the outer side surface of the extrusion plate (14); two limiting frames (21) are slidably clamped on both sides of the center of the limiting groove (20); an elastic plate (22) is provided between the two limiting frames (21); the limiting frames (21) correspond to the fixing frames (19) one by one, and the limiting frames (21) and the fixing frames (19) are rotatably connected via a rotating rod (23); A spring (24) is provided between the fixing frame (19) and the collar (17), one end of the spring (24) being fixedly connected to the inner side surface of the fixing frame (19), and the other end of the spring (24) being fixedly connected to the side surface of the collar (17); A clamping head (25) is arranged at the center of the bottom surface of the placement frame (8), and a stepping motor (26) is arranged on the inner side of the center of the bottom surface of the groove (5). The output end of the stepping motor (26) is correspondingly clamped to the bottom end of the clamping head (25) by means of a square rod (27). A torsion spring (28) is sleeved on the surface of the square rod (27). The top end of the torsion spring (28) is fixedly connected to the bottom surface of the clamping head (25), and the bottom end of the torsion spring (28) is fixedly connected to the top surface of the stepping motor (26); Corresponding grooves (29) are provided inside both sides of the bottom plate (3), and connecting frames (30) are correspondingly placed inside the corresponding grooves (29). The connecting frame (30) is configured as a trident structure as a whole, and one end of the connecting frame (30) is located inside the through pipe (4), and the three-pronged ends of the connecting frame (30) are respectively fitted with the bottom of the outer side surfaces of the three extruded plates (14), and a plurality of wires are respectively connected to the plurality of extruded plates (14) by means of the connecting frame (30), and through holes (31) corresponding to and matching the connecting frame (30) are provided at both ends of the groove (5).

2. A method for testing a semiconductor device driving circuit according to claim 1, characterized in that: The following steps are involved: S1. Prepare three identical light-emitting diodes and a test device that matches the light-emitting diodes, and place the two pins of the light-emitting diodes into the two corresponding connecting tubes (12) at the bottom of the placement frame (8); S2, after the screw strip (9) on the outer side of the circumference of the placement frame (8) is aligned with the screw groove (10) on the top surface of the cover plate (6), and the bottom of the placement frame (8) is correspondingly clamped with the top of the square rod (27), the stepper motor (26) is started, and the stepper motor (26) drives the placement frame (8) to rotate counterclockwise using the square rod (27), and the placement frame (8) moves downward in the process of counterclockwise rotation on the surface of the screw groove (10), and the placement frame (8) squeezes and twists the torsion spring (28) on the surface of the square rod (27); S3, when the placement frame (8) rotates, the placement frame (8) drives the connecting tube (12) to move, and at this time, the connecting tube (12) slides inside the inner slide groove (16) of the extrusion plate (14) using the slider (15), and the distance between the two connecting tubes (12) increases, and the placement frame (8) pulls the two extrusion plates (14) using the two connecting tubes (12), and the two extrusion plates (14) approach each other until the two extrusion plates (14) respectively contact the rubber sleeves (13) on the surfaces of the connecting tubes (12) arranged opposite to each other; S4, when the two extrusion plates (14) are approaching each other, the screw threads of the fixing rod (18) and the fixing frame (19) cooperate to limit the outer ends of the spring (24) and the rotating rod (23). At the same time, the extrusion plate (14) uses the collar (17) to stretch the spring (24), and at the same time, the extrusion plate (14) uses the limiting groove (20) to pull the limiting frame (21). At this time, the rotating rod (23) rotates, and the two limiting frames (21) move away from each other during the sliding process inside the limiting groove (20), so that the two extrusion plates (14) can be squeezed with the corresponding connecting tubes (12) respectively. At this time, the connecting tube (12) is squeezed and deformed, thereby improving the contact stability effect between the connecting tube (12) and the light-emitting diode pin; S5. When the light-emitting diode is working normally, the DC voltage input on the DC voltage input line (2) is mainly used as the power supply voltage of the light-emitting diode, so that the power supply voltage of the light-emitting diode is stable, so that the light-emitting diode will not be damaged due to voltage changes on the light-emitting diode. If the light-emitting diode is short-circuited or damaged, the stepper motor (26) corresponding to the light-emitting diode stops working, the elastic force of the torsion spring (28) rebounds, and the torsion spring (28) drives the entire placement frame (8) to rotate clockwise using the clamp (25), and the elastic force of the spring (24) pulls back, thereby causing the two extrusion plates (14) to gradually move away from each other. At this time, the connecting tube (12) returns to its original state, and the connecting tube (12) The connection pressure between the light-emitting diode and the placement frame (8) is reduced, and when the placement frame (8) rotates clockwise, the rotating sleeve (11) is used to drive the two connection tubes (12) to move. The two connection tubes (12) slide inside the inner groove (16) of the extrusion plate (14) using the slider (15). The placement frame (8) rotates clockwise inside the screw groove (10) using the screw bar (9), and the elastic force of the torsion spring (28) causes the placement frame (8) to move upward during the rotation process until the screw bar (9) is separated from the screw groove (10). At this time, the elastic force of the torsion spring (28) bounces the entire placement frame (8) from the inside of the through groove (7), and at this time, the light-emitting diode pin inside the placement frame (8) is separated from the top of the connection tube (12); S6. When the light emitting diode is damaged, the placement frame (8) and the light emitting diode are ejected from the top of the cover plate (6), thereby preventing the stepper motor (26) from being damaged due to the damage of the light emitting diode.

Images