An optical fiber transceiver chip structure, a packaging jig and a packaging method thereof

Abstract

The application relates to the technical field of special chips, in particular to an optical fiber transceiver chip structure, a packaging jig and a packaging method thereof, which comprise a jig table and detection contacts arranged on the jig table; a fixing column is arranged on the jig table, a rotating sleeve sheathed on the fixing column is rotatably arranged on the jig table; a bidirectional limiting mechanism is arranged on the rotating sleeve and connected with the fixing column; a rotary positioning mechanism connected with the rotating sleeve is arranged on the jig table; the rotary positioning mechanism can store energy when an extension plate is sleeved into the fixing column; when the extension plate moves to a specified position, the rotating sleeve is controlled to rotate, the bidirectional limiting mechanism is guided to perform a bidirectional locking action on the extension plate, and the packaging test stability of a chip body is ensured.

Description

Technical Field

[0001] This invention relates to the field of dedicated chip technology, specifically to a fiber optic transceiver chip structure, packaging fixture, and packaging method. Background Technology

[0002] Fiber optic transceiver chips are dedicated core chip devices for modern communication networks. They typically integrate multiple modules such as lasers, detectors, drive circuits, and signal processing units onto a single chip, and achieve high-speed electro-optic / photoelectric signal conversion and data transmission through peripherally arranged pins, such as the dedicated chip of the HFBR series fiber optic transceivers.

[0003] Unlike conventional chips, fiber optic transceiver chips are dedicated chips, belonging to the category of ASICs (Application-Specific Integrated Circuits). They are typically used for specific fiber optic communication standards and are optimized for specific transmission rates, wavelengths, and protocols. They also differ significantly in their structural form. For example, the HFBR series of dedicated chips are mostly packaged in DIP-8 form. To ensure reliable communication performance after packaging, the chip's electrical parameters and functions must be tested before packaging. This process requires the use of precision packaging fixtures to achieve a stable and accurate temporary connection between the chip's pins and the testing contacts of the testing equipment.

[0004] In existing technologies, chip packaging testing typically uses positioning pins for positioning and clamping components to fix the chip. However, chip pins are relatively fragile, and the detection contacts on the fixture are equally precise. If the positioning is only rough, minor misalignment can easily lead to poor contact or scratch damage between the pins and the detection contacts, affecting the accuracy of the test. Furthermore, during the test, the chip is easily affected by the vibration of the equipment, resulting in micro-motion, unstable signal connection, and large fluctuations in test results. Summary of the Invention

[0005] The purpose of this invention is to provide an optical fiber transceiver chip structure, packaging fixture, and packaging method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A fiber optic transceiver chip structure, comprising: The chip body, and a plurality of tapered positioning holes formed at equal intervals on the bottom of the chip body, with pins for testing fixed on both sides of the chip body; An extension plate is disposed on the side wall of the chip body and arranged symmetrically. The extension plate has through holes and slots for positioning and guidance.

[0007] A fixture for packaging the fiber optic transceiver chip structure as described above, comprising: A fixture table, and detection contacts mounted on the fixture table; A fixed column is provided on the fixture platform, and a rotating sleeve sleeved on the fixed column is rotatably mounted on the fixture platform. A bidirectional limiting mechanism is provided on the rotating sleeve and connected to the fixed column. A rotary positioning mechanism connected to the rotating sleeve is provided on the fixture table. The rotary positioning mechanism can operate when the extension plate is fitted into the fixed column and perform a bidirectional locking action on the extension plate through the bidirectional limiting mechanism.

[0008] As a further embodiment of the present invention: the bidirectional limiting mechanism includes a movable sleeve that slides along the axial direction of the rotating sleeve, a positioning block that cooperates with the slot is fixed on the movable sleeve, and a limiting disc that abuts against the extension plate is fixed at the end of the movable sleeve. It also includes a support assembly and an elastic assembly disposed on the fixture table to limit the rotation of the limiting disc.

[0009] As a further embodiment of the present invention: the support assembly includes a support sleeve disposed on the fixture table, a support rod axially sliding inside the support sleeve, a limit hole formed on the limiting plate, the support rod abutting against the limiting plate and slidingly engaging with the limit hole.

[0010] As a further embodiment of the present invention: the elastic component includes a limiting ring disposed on the support rod and engaging with the limiting plate, and a first spring is sleeved on the support sleeve and the support rod, with the two ends of the first spring abutting against the limiting ring and the fixture table respectively.

[0011] As a further embodiment of the present invention: the outer circumference of the fixed column is formed with a first spiral groove and an annular groove, the outer circumference of the rotating sleeve is formed with a straight groove, and the inner wall of the movable sleeve is fixed with a first limiting block that penetrates the straight groove and slides into the first spiral groove and the annular groove.

[0012] As a further embodiment of the present invention: the rotary positioning mechanism includes a guide post disposed on the fixture table, a connecting plate slidingly on the guide post along its axial direction, and a second spring sleeved on the guide post, the two ends of the second spring respectively abutting against the connecting plate and the fixture table.

[0013] As a further embodiment of the present invention: a second helical groove is formed on the outer circumferential wall of the rotating sleeve, a sliding sleeve fixedly connected to the connecting plate is axially slidable on the rotating sleeve, and a second limiting block is fixed on the inner wall of the sliding sleeve and slidably engaged with the second helical groove.

[0014] As a further embodiment of the present invention: tapered positioning rods that are evenly distributed and cooperate with the tapered positioning holes are fixed on the fixture platform.

[0015] A method for packaging a chip structure using the packaging fixture described above includes the following steps: Step 1: Connect the through hole on the extension plate to the fixing post; Step 2: The extension board will drive the bidirectional limiting mechanism to move. Under the action of the bidirectional limiting mechanism, the chip body will be guided and positioned by the extension board. Step 3: The bidirectional limiting mechanism also controls the movement of the rotary positioning mechanism through the rotating sleeve. When the extension plate moves to the required installation position, the rotary positioning mechanism controls the movement of the bidirectional limiting mechanism through the rotating sleeve, and under the action of the bidirectional limiting mechanism, the extension plate is bidirectionally locked. Step 4: At this point, the tapered positioning hole and the tapered positioning rod are fully connected, and the pin and the detection contact are also in contact.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention uses the cooperation between the positioning block and the slot during the pressing down of the extension plate to forcibly guide the chip body to a preset precise test position. During this process, the extension plate drives the bidirectional limiting mechanism and stores energy by controlling the rotating positioning mechanism through the rotating sleeve. Once the chip reaches the designated position, the rotating positioning mechanism is automatically triggered and releases the stored energy. The rotating sleeve then controls the movement of the rotating positioning mechanism, causing the positioning block to rotate to a position misaligned with the slot. This allows the extension plate to be double-locked on both the upper and lower sides through the limiting plate and the positioning block.

[0017] When the limiting plate rotates to its maximum angle, it will control the limiting hole to move to the position where it engages with the support rod. Under the action of the first spring, the support rod is inserted into the limiting hole, thereby locking the limiting plate circumferentially. Under the multiple locking of axial constraint and circumferential restriction, the spatial omnidirectional constraint of the extension plate is achieved, ensuring that the pin and the detection contact achieve zero-gap contact.

[0018] In the locked state, the second spring applies a continuous, constant-direction preload torque to the rotating sleeve through the connecting plate and the sliding sleeve. This torque is ultimately converted into a constant clamping force acting on the extension plate (and the chip) through the bidirectional limiting mechanism. This preload force can effectively offset the unavoidable high-frequency vibration interference in the test environment, ensuring that the electrical connection between the chip and the fixture remains highly stable throughout the entire test process, thereby obtaining consistent and reliable test data. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of one embodiment of an optical fiber transceiver chip structure.

[0020] Figure 2 This is a schematic diagram of the structure of a fiber optic transceiver chip from another angle in one embodiment.

[0021] Figure 3 This is a schematic diagram of one embodiment of a packaging fixture.

[0022] Figure 4 This is a structural schematic diagram of another angle in one embodiment of the packaging fixture.

[0023] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 6 This is a schematic diagram of the structure of the fixture platform, detection contacts, and conical positioning rod in one embodiment of the encapsulation fixture.

[0025] Figure 7 This is a schematic diagram showing the state of the chip body after it is connected to the packaging fixture in one embodiment of the packaging fixture.

[0026] Figure 8 This is a schematic diagram of the structure of the bidirectional limiting mechanism and the rotary positioning mechanism in one embodiment of the packaging fixture, showing the locking state of the extension plate.

[0027] Figure 9 for Figure 8 Another structural diagram from a different angle.

[0028] Figure 10 This is a schematic diagram of the structure of the bidirectional limiting mechanism and the rotary positioning mechanism in an embodiment of the packaging fixture when they are not in operation.

[0029] Figure 11 This is an exploded structural diagram of a portion of the bidirectional limiting mechanism in one embodiment of the encapsulation fixture.

[0030] Figure 12 This is an exploded view of the rotary positioning mechanism in one embodiment of the packaging fixture.

[0031] In the diagram: 1. Chip body; 2. Pin; 3. Conical positioning hole; 4. Extension plate; 401. Through hole; 402. Slot; 5. Fixture platform; 6. Detection contact; 7. Conical positioning rod; 8. Fixing post; 801. First spiral groove; 802. Annular groove; 9. Rotating sleeve; 901. Second spiral groove; 902. Straight groove; 10. Limiting plate; 1001. Limiting hole; 11. Movable sleeve; 1101. First limiting block; 12. Positioning block; 13. Support sleeve; 14. Support rod; 1401. Limiting ring; 15. First spring; 16. Sliding sleeve; 1601. Second limiting block; 17. Connecting plate; 18. Guide post; 19. Second spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0034] Please see Figures 1 to 2 In this embodiment of the invention, an optical fiber transceiver chip structure includes: The chip body 1, and a plurality of tapered positioning holes 3 formed at equal intervals on the bottom of the chip body 1, and pins 2 for testing are fixed on both sides of the chip body 1. An extension plate 4 is disposed on the side wall of the chip body 1 and is arranged symmetrically. The extension plate 4 has through holes 401 and slots 402 for positioning and guidance.

[0035] In detail, the chip body 1 integrates a chip, and pins 2 extend from both sides of the chip body 1. During the production process, the chip body 1 needs to be packaged and tested, that is, the chip body 1 is tested through the pins 2. In order to ensure the stability and accuracy of the connection, a conical positioning hole 3 is formed at the bottom of the chip body 1. By cooperating with the conical positioning hole 3, the pins 2 can be guided and positioned to ensure the accuracy of subsequent packaging and testing.

[0036] Please see Figures 3 to 12 A packaging fixture for packaging the fiber optic transceiver chip structure as described above, comprising: Fixture table 5, and detection contacts 6 provided on fixture table 5; A fixed column 8 is disposed on the fixture platform 5, and a rotating sleeve 9 sleeved on the fixed column 8 is rotatably mounted on the fixture platform 5. A bidirectional limiting mechanism is provided on the rotating sleeve 9 and connected to the fixed column 8. A rotary positioning mechanism connected to the rotating sleeve 9 is provided on the fixture table 5. The rotary positioning mechanism can operate when the extension plate 4 is fitted into the fixed column 8, and perform a bidirectional locking action on the extension plate 4 through the bidirectional limiting mechanism.

[0037] The fixture platform 5 is fixed with tapered positioning rods 7 that are evenly distributed and cooperate with the tapered positioning holes 3.

[0038] Specifically, when testing the chip body 1, it is necessary to control the conical positioning rod 7 to be inserted into the conical positioning hole 3. To this end, when the extension plate 4 is fitted into the fixing post 8 through the through hole 401, as the extension plate 4 moves toward the fixture table 5, it will drive the bidirectional limiting mechanism to move. The bidirectional limiting mechanism will drive the rotary positioning mechanism to move through the rotating sleeve 9. The rotary positioning mechanism can store energy. At the same time, under the action of the bidirectional limiting mechanism, it can position and guide the extension plate 4 to ensure that the conical positioning hole 3 on the chip body 1 is located directly above the conical positioning rod 7 and gradually fits onto the conical positioning rod 7. When the extension plate 4 moves to the designated position, that is, the pin 2 and the detection contact 6, the conical positioning rod 7 and the conical positioning hole 3 are connected. At this time, under the action of the rotary positioning mechanism, the rotating sleeve 9 is controlled to rotate, thereby performing a bidirectional locking action on the extension plate 4 through the bidirectional limiting mechanism to ensure the stability of the chip body 1 during packaging and testing.

[0039] Please see Figures 3 to 5 , Figures 7 to 12 The bidirectional limiting mechanism includes a movable sleeve 11 that slides axially along the rotating sleeve 9. A positioning block 12 that mates with the slot 402 is fixed on the movable sleeve 11. A limiting plate 10 that abuts against the extension plate 4 is fixed at the end of the movable sleeve 11. It also includes a support assembly and an elastic assembly disposed on the fixture table 5 to limit the rotation of the limiting plate 10. The support assembly includes a support sleeve 13 disposed on the fixture table 5. A support rod 14 slides axially within the support sleeve 13. A limiting hole 1001 is formed on the limiting plate 10. The support rod 14 abuts against the limiting plate 10 and engages with the limiting plate 4. The locating hole 1001 is slidably engaged. The elastic component includes a limiting ring 1401 disposed on the support rod 14 and abutting against the limiting plate 10. A first spring 15 is sleeved on the support sleeve 13 and the support rod 14. The two ends of the first spring 15 abut against the limiting ring 1401 and the fixture table 5, respectively. A first spiral groove 801 and an annular groove 802 are formed on the outer circumference of the fixed column 8. A straight groove 902 is formed on the outer circumference of the rotating sleeve 9. A first limiting block 1101 is fixed on the inner wall of the movable sleeve 11, penetrating the straight groove 902 and slidably engaged with the first spiral groove 801 and the annular groove 802.

[0040] Please see Figures 3 to 5 , Figures 7 to 12The rotary positioning mechanism includes a guide post 18 disposed on the fixture table 5, a connecting plate 17 slidably mounted on the guide post 18, a second spring 19 sleeved on the guide post 18, the two ends of the second spring 19 respectively abutting against the connecting plate 17 and the fixture table 5, a second spiral groove 901 formed on the outer circumferential wall of the rotating sleeve 9, a sliding sleeve 16 fixedly connected to the connecting plate 17 slidably mounted on the rotating sleeve 9, and a second limiting block 1601 fixedly mounted on the inner wall of the sliding sleeve 16 and slidably fitted with the second spiral groove 901.

[0041] Please see Figure 12 Furthermore, one end of the first spiral groove 801 is connected to one end of the annular groove 802, the second spiral groove 901 has the same circumferential dimension as the annular groove 802, and the annular groove 802 has a larger circumferential dimension than the first spiral groove 801. The end of the fixed column 8 is tapered and narrowed, and the size of the through hole 401 is equivalent to the outer diameter of the movable sleeve 11. Please see Figure 10 In the initial state, when the extension plate 4 and the fixed column 8 are separated, the first limiting block 1101 is located at the end of the stroke of the first spiral groove 801 away from the annular groove 802. The support rod 14 and the side of the limiting plate 10 are in contact, and the support rod 14 and the limiting hole 1001 are in a misaligned state. Under the action of the support rod 14, the distance between the limiting ring 1401 and the fixture table 5 is maximized. The extension of the first spring 15 in its natural state is greater than the maximum distance between the limiting ring 1401 and the fixture table 5. Therefore, the first spring 15 always provides the limiting ring 1401 with a thrust in the direction away from the fixture table 5. Under the action of the first spiral groove 801 and the first limiting block 1101, the line connecting the positioning block 12 and the two support rods 14 is perpendicular to the line connecting the two limiting holes 1001. In this state, the positioning block 12 and the slot 402 are in a cooperating state. Please see Figure 10 At this time, the first limiting block 1101 locks the angle of the rotating sleeve 9 through the straight groove 902. Under the action of the rotating sleeve 9, the sliding sleeve 16 is controlled by the second spiral groove 901 and the second limiting block 1601 to be located slightly below the midpoint of the second spiral groove 901, that is, close to the jig table 5. Since the connecting plate 17 can only slide along the axial direction of the guide post 18, and the elongation of the second spring 19 in its natural state is greater than the size of the guide post 18, the second spring 19 is in a pre-compressed state and always provides the connecting plate 17 and the sliding sleeve 16 with a thrust in the direction away from the jig table 5. Under the action of the second limiting block 1601 and the second spiral groove 901, the rotating sleeve 9 has a counterclockwise rotation tendency. Therefore, under the action of the straight groove 902 and the first limiting block 1101, the position of the movable sleeve 11 is locked.

[0042] When it is necessary to perform packaging testing on the chip body 1, the chip body 1 can be held in hand and the through hole 401 formed on the extension plate 4 can be inserted into the fixing post 8. Since the top of the fixing post 8 is tapered, it can guide the extension plate 4. In this state, the positioning block 12 and the slot 402 are in a cooperating state. Therefore, when the through hole 401 is inserted into the movable sleeve 11, the slot 402 will be smoothly inserted into the positioning block 12, so that the positioning block 12 passes through the slot 402 until the extension plate 4 and the limiting plate 10 abut. Since the distance between the positioning block 12 and the limiting plate 10 is equivalent to the thickness of the extension plate 4, when the extension plate 4 abuts against the limiting plate 10, the positioning block 12 is just completely separated from the slot 402. At this time, the extension plate 4 continues to move toward the fixture table 5 and pushes the limiting plate 10 to move, thereby controlling the support rod 14 to move toward the support sleeve 13, so that the first spring 15 is compressed. The limiting plate 10 will drive the movable sleeve 11 and the positioning block 12 to slide synchronously along the axial direction of the rotating sleeve 9, so that the first limiting block 1101 slides along the straight groove 902 and the first spiral groove 801. Since the fixed column 8 is in a fixed state, under the action of the first limiting block 1101 and the first spiral groove 801, the movable sleeve 11 rotates, thereby driving the limiting plate 10 and the positioning block 12 to rotate synchronously. Please see Figure 11 At this time, the movable sleeve 11 will rotate in the downward spiral direction of the first spiral groove 801, that is, clockwise. Under the action of the first limiting block 1101 and the straight groove 902, it will drive the rotating sleeve 9 to rotate, thereby driving the sliding sleeve 16 to move through the second spiral groove 901 and the second limiting block 1601, so that the connecting plate 17 slides along the axial direction of the guide post 18 and moves towards the direction close to the fixture table 5, so that the second spring 19 is compressed. Please see Figure 12 The vertical dividing line between the first spiral groove 801 and the annular groove 802 is used as the vertical dividing line. The size of the annular groove 802 on the left side of the vertical dividing line is smaller than the size on the right side. In the initial state, the angle between the positioning block 12 and the limiting hole 1001 in the circumferential direction is 90°. In response, when the extension plate 4 moves down to the designated position, that is, when the pin 2 contacts the detection contact 6, the movable sleeve 11 and the limiting plate 10 move to the end of their stroke in the direction close to the fixture table 5, the size of the support rod 14 and the support sleeve 13 fitting together reaches the maximum, so that the compression of the first spring 15 reaches the maximum, the first limiting block 1101 moves to the position where the first spiral groove 801 and the annular groove 802 are connected, the rotation angle of the rotating sleeve 9 in the clockwise direction reaches the maximum, so that the second limiting block 1601 moves to the end of its stroke on the side of the second spiral groove 901 close to the fixture table 5, and the compression of the second spring 19 also reaches the maximum. Please see Figure 9 In this state, the second spring 19 is released elastically and pushes the connecting plate 17 to move away from the fixture table 5, thereby driving the sliding sleeve 16 to move. This causes the second limiting block 1601 to slide along the second spiral groove 901, so that the rotating sleeve 9 rotates counterclockwise. The rotating sleeve 9 will cooperate with the first limiting block 1101 through the straight groove 902, controlling the first limiting block 1101 to slide along the annular groove 802, thereby driving the movable sleeve 11, the limiting plate 10, and the positioning block 12 to rotate synchronously. When the second limiting block 1601 moves to the end of the stroke of the second spiral groove 901 away from the fixture table 5, the first limiting block 1101 moves to the end of the stroke of the annular groove 802 away from the first spiral groove 801. At the end of the process, the positioning block 12 rotates exactly 90° from its initial position. Under the double upper and lower limit of the positioning block 12 and the limiting disk 10, the position of the extension plate 4 is locked. At the same time, the limiting disk 10 drives the limiting hole 1001 to rotate to the position that matches the support rod 14. At this time, the first spring 15 is released elastically and pushes the support rod 14 into the limiting hole 1001 through the limiting ring 1401 until the limiting ring 1401 abuts against the limiting disk 10. Under the action of the support rod 14 and the limiting hole 1001, the angle of the limiting disk 10 in the circumferential direction is locked. In this way, the problem of the chip body 1 becoming loose due to the rotation caused by the shaking of the limiting disk 10 during the packaging and testing process can be avoided.

[0043] When the first limiting block 1101 is located in the annular groove 802, the position of the first limiting block 1101 in the vertical direction can also be locked. With the help of the positioning block 12 and the limiting plate 10, it can further ensure that the position of the extension plate 4 in the axial direction of the rotating sleeve 9 will not change. The cooperation between the support rod 14 and the limiting hole 1001 can ensure that the position of the first limiting block 1101 in the annular groove 802 will not change. In this way, under the multiple locking of axial constraint and circumferential restriction, the spatial omnidirectional constraint of the extension plate 4 is realized, ensuring that the pin 2 and the detection contact 6 achieve zero gap contact.

[0044] In this state, the second spring 19 generates a continuous torque by pushing the connecting plate 17, so that the rotating sleeve 9 always has a preload force that maintains a counterclockwise rotation trend. This preload force is transmitted through the bidirectional limiting mechanism and converted into a constant clamping force on the extension plate 4, effectively overcoming high-frequency vibration interference in the test environment.

[0045] Once the test is complete, simply control the support rod 14 to disengage from the limiting hole 1001 and control the limiting plate 10 to rotate. When the limiting plate 10 rotates, the limiting hole 1001 and the support rod 14 are misaligned. At this time, the force applied to the support rod 14 can be removed. The limiting plate 10 controls the first limiting block 1101 to move to the connection position between the annular groove 802 and the first spiral groove 801 through the movable sleeve 11. The first spring 15 is released elastically and pushes the limiting plate 10 to the initial height. In this way, the release of the extension plate 4 can be completed.

[0046] A method for packaging a chip structure using the aforementioned packaging fixture includes the following steps: Step 1: Connect the through hole 401 on the extension plate 4 to the fixing post 8; Step 2: The extension plate 4 will drive the bidirectional limiting mechanism to move. Under the action of the bidirectional limiting mechanism, the chip body 1 will be guided and positioned by the extension plate 4. Step 3: The bidirectional limiting mechanism also controls the movement of the rotary positioning mechanism through the rotating sleeve 9. When the extension plate 4 moves to the required installation position, the rotary positioning mechanism controls the movement of the bidirectional limiting mechanism through the rotating sleeve 9, and under the action of the bidirectional limiting mechanism, the extension plate 4 is bidirectionally locked. Step 4: At this point, the conical positioning hole 3 and the conical positioning rod 7 are fully connected, and the pin and the detection contact 6 are also in contact.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A packaging fixture for encapsulating an optical fiber transceiver chip structure, the optical fiber transceiver chip structure comprising: The chip body, and a plurality of tapered positioning holes formed at equal intervals on the bottom of the chip body, with pins for testing fixed on both sides of the chip body; An extension plate is disposed on the side wall of the chip body and arranged symmetrically. The extension plate has through holes and slots for positioning and guidance. The packaging fixture is characterized in that it comprises: A fixture table, and detection contacts mounted on the fixture table; A fixed column is provided on the fixture platform, and a rotating sleeve sleeved on the fixed column is rotatably mounted on the fixture platform. A bidirectional limiting mechanism is provided on the rotating sleeve and connected to the fixed column. A rotary positioning mechanism connected to the rotating sleeve is provided on the fixture table. The rotary positioning mechanism can operate when the extension plate is fitted into the fixed column and perform a bidirectional locking action on the extension plate through the bidirectional limiting mechanism. The bidirectional limiting mechanism includes a movable sleeve that slides along the axial direction of the rotating sleeve, a positioning block that cooperates with the slot is fixed on the movable sleeve, and a limiting disc that abuts against the extension plate is fixed at the end of the movable sleeve. It also includes a support assembly and an elastic assembly disposed on the fixture table to limit the rotation of the limiting disk; The outer circumference of the fixed column is formed with a first spiral groove and an annular groove, the outer circumference of the rotating sleeve is formed with a straight groove, and the inner wall of the movable sleeve is fixed with a first limiting block that penetrates the straight groove and slides into the first spiral groove and the annular groove.

2. The packaging fixture according to claim 1, characterized in that, The support assembly includes a support sleeve disposed on the fixture table, a support rod that slides axially inside the support sleeve, a limit hole formed on the limiting plate, and the support rod engaging with the limiting plate and sliding with the limit hole.

3. The packaging fixture according to claim 2, characterized in that, The elastic component includes a limiting ring disposed on the support rod and engaging with the limiting plate, and a first spring sleeved on the support sleeve and the support rod, with the two ends of the first spring abutting against the limiting ring and the fixture table, respectively.

4. The packaging fixture according to claim 1, characterized in that, The rotary positioning mechanism includes a guide post disposed on the fixture table, a connecting plate that slides axially on the guide post, and a second spring sleeved on the guide post, with the two ends of the second spring abutting against the connecting plate and the fixture table respectively.

5. A packaging fixture according to claim 4, characterized in that, The outer circumferential wall of the rotating sleeve is formed with a second spiral groove, and the axial sliding sleeve of the rotating sleeve is fixedly connected to the connecting plate. The inner wall of the sliding sleeve is fixed with a second limiting block that slides and engages with the second spiral groove.

6. The packaging fixture according to claim 1, characterized in that, The fixture platform is fixed with tapered positioning rods that are evenly distributed and cooperate with the tapered positioning holes.

7. A method for packaging a chip structure using the packaging fixture as described in claim 1, characterized in that, Includes the following steps: Step 1: Connect the through hole on the extension plate to the fixing post; Step 2: The extension board will drive the bidirectional limiting mechanism to move. Under the action of the bidirectional limiting mechanism, the chip body will be guided and positioned by the extension board. Step 3: The bidirectional limiting mechanism also controls the movement of the rotary positioning mechanism through the rotating sleeve. When the extension plate moves to the required installation position, the rotary positioning mechanism controls the movement of the bidirectional limiting mechanism through the rotating sleeve, and under the action of the bidirectional limiting mechanism, the extension plate is bidirectionally locked. Step 4: At this point, the tapered positioning hole and the tapered positioning rod are fully connected, and the pin and the detection contact are also in contact.

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