COB light module program downloading device with COB quality detection function and light module production line
Patent Information
- Application Number
- CN202522063305.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-09-25
AI Technical Summary
[0003]COB封装结构中，为了良好的散热和电气连接，光芯片需要通过导电银胶粘贴在PCB基板上，由于COB内部空间高精度要求，这里银胶的量和面积都需要很好的控制，过少会导致接触不良，过多可能带来短路风险
[0014]本实用新型中，在现有的COB光模块程序下载平台中集成质量检测机构，在COB光模块程序下载工序即对COB光模块中的溢胶状况和/或打线质量进行检测，使程序下载和质量检测同步进行，优化了生产流程，实现了有效的前期拦截，避免故障光模块流入下一道工序，因而能提高产品的生产良率和光模块生产效率。
Smart Images
Figure CN224839987U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of optical module technology, specifically relating to a COB optical module program downloading device with COB quality detection function and an optical module production line equipped with the COB optical module program downloading device. Background Technology
[0002] COB packaging directly mounts laser chips, detector chips, and other components onto a PCB substrate and achieves electrical connection with other components on the PCB through wire bonding. It eliminates the need for the housing and adapter structure in traditional TO-CAN packaging, which not only significantly reduces the size but also simplifies the process and increases bandwidth. It is widely used, especially in optical modules above 100G.
[0003] In COB (Chip-on-Board) packaging, for good heat dissipation and electrical connection, the optical chip needs to be attached to the PCB substrate using conductive silver paste. Due to the high precision requirements of the internal space of COB, the amount and area of silver paste need to be carefully controlled. Too little paste will lead to poor contact, while too much may pose a short circuit risk. Additionally, inaccurate settings for switching delays or jump delays can cause uneven bonding or trailing phenomena, which are common failure cases encountered in the COB process. Since signal testing is not performed in the COB process, these failures, if not intercepted, can easily flow into the next process, affecting overall production time and yield. Utility Model Content
[0004] This utility model relates to a COB optical module program downloading device with COB quality detection function and an optical module production line equipped with the COB optical module program downloading device, which can at least solve some of the defects of the prior art.
[0005] This utility model relates to a COB optical module program download device with COB quality inspection function, including an operating table and an operating fixture arranged on the operating table. The operating table is also provided with a quality inspection mechanism for detecting the overflow of adhesive and / or the wire bonding quality in the COB optical module. The quality inspection mechanism includes a detection head and a detection drive unit for driving the detection head to move closer to or away from the operating fixture.
[0006] As one implementation method, the detection head is an X-ray sampling machine.
[0007] As one implementation, the detection drive unit includes a robotic arm capable of three-dimensional movement, the robotic arm being mounted on the operating table, and the detection head being mounted on the execution end of the robotic arm.
[0008] As one embodiment, the robotic arm is a three-degree-of-freedom robotic arm, including a first arm body, a second arm body, and a third arm body. The first arm body is connected to a bracket mounted on the operating table through a first degree-of-freedom structure. The second arm body is connected to the first arm body through a second degree-of-freedom structure. The third arm body is connected to the second arm body through a third degree-of-freedom structure. The detection head is mounted at the end of the third arm body.
[0009] As one implementation method, the operating table is also equipped with a central controller, and the operating fixture, the detection head and the detection drive unit are all electrically connected to the central controller.
[0010] As one implementation method, the operating table is also equipped with a barcode scanner, which is electrically connected to the central controller.
[0011] As one implementation method, the operating table is also equipped with a power supply, and the operating fixture, the detection head, and the detection drive unit are all connected to the power supply.
[0012] This utility model also relates to an optical module production line, including a COB packaging station, a program download station and a post-processing station connected in sequence, wherein the program download station is provided with the COB optical module program download device as described above.
[0013] This utility model has at least the following beneficial effects:
[0014] In this invention, a quality inspection mechanism is integrated into the existing COB optical module program download platform. During the COB optical module program download process, the overflow of adhesive and / or the quality of wire bonding in the COB optical module are inspected. This allows program download and quality inspection to be carried out simultaneously, optimizing the production process, achieving effective early interception, and preventing faulty optical modules from flowing into the next process. As a result, the production yield and production efficiency of optical modules can be improved. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 A schematic diagram of the COB optical module program download device provided in this embodiment of the utility model. Detailed Implementation
[0017] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] Example 1
[0019] like Figure 1 This utility model embodiment provides a COB optical module program download device with COB quality detection function, including an operating table 8 and an operating fixture 5 arranged on the operating table 8. The operating table 8 is also provided with a quality detection mechanism for detecting the overflow of glue and / or the wire bonding quality in the COB optical module 7. The quality detection mechanism includes a detection head 4 and a detection drive unit for driving the detection head 4 to move closer to or away from the operating fixture 5.
[0020] The operating fixture 5 is equipped with an optical module communication board 6 and an optical module clamping unit. The optical module clamping unit is used to clamp the COB optical module 7. The optical module communication board 6 is an optical module plug-in interface device that can provide power supply and information interaction path for the optical module (for program loading).
[0021] In one embodiment, the detection head 4 is an X-ray sampling machine, which can capture and image information on adhesive overflow and / or suture quality. It should be noted that this embodiment uses an existing X-ray sampling machine capable of quality inspection and does not involve any improvements to the structure or program of the X-ray sampling machine itself.
[0022] Since the COB optical module 7 already has a lens in the COB optical module program download process, compared with camera inspection or visual inspection with a magnifying glass, this embodiment uses an X-ray sampling machine to inspect the overflow of adhesive and / or the wire bonding quality of the COB optical module 7, which can ensure the accuracy and reliability of COB quality inspection.
[0023] In one embodiment, such as Figure 1 The detection drive unit includes a robotic arm 3 capable of three-dimensional movement, which is mounted on the operating table 8. The detection head 4 is mounted on the execution end of the robotic arm 3. Using the robotic arm 3 to drive the detection head 4 provides high operational flexibility, ensures detection accuracy, and can simultaneously meet the detection requirements for both glue overflow and wire bonding quality.
[0024] Optionally, the robotic arm 3 is a three-degree-of-freedom robotic arm 3, including a first arm body, a second arm body, and a third arm body. The first arm body is connected to the bracket 2 mounted on the operating table 8 through a first-degree-of-freedom structure. The second arm body is connected to the first arm body through a second-degree-of-freedom structure. The third arm body is connected to the second arm body through a third-degree-of-freedom structure. The detection head 4 is mounted at the end of the third arm body. The above-mentioned first-degree-of-freedom structure, second-degree-of-freedom structure, and third-degree-of-freedom structure are combined to form a three-degree-of-freedom structure, which can drive the detection head 4 to perform three-dimensional motion. The three degrees of freedom can be rotational degrees of freedom around the X-axis, rotational degrees of freedom around the Y-axis, and rotational degrees of freedom around the Z-axis, or combinations of X-axis translational degrees of freedom, Y-axis translational degrees of freedom, and Z-axis translational degrees of freedom, etc., as long as they can satisfy the requirement of driving the detection head 4 to perform three-dimensional motion. Not all of them are listed here.
[0025] Preferably, the aforementioned bracket 2, robotic arm 3, and detection head 4 are integrated into a single quality inspection machine, facilitating overall assembly and disassembly. The aforementioned bracket 2 may include, but is not limited to, structures such as a portal frame bracket 2.
[0026] In this embodiment, a quality inspection mechanism is integrated into the existing COB optical module program download platform. During the COB optical module program download process, the overflow of adhesive and / or the wire bonding quality of the COB optical module 7 are inspected. This allows program download and quality inspection to be carried out simultaneously, optimizing the production process, achieving effective early interception, and preventing faulty optical modules from flowing into the next process. As a result, the production yield and production efficiency of optical modules can be improved.
[0027] In one embodiment, such as Figure 1 The operating console 8 is also equipped with a central controller 1, and the operating fixture 5, the detection head 4, and the detection drive unit are all electrically connected to the central controller 1. As described above, this embodiment does not modify the programs involved in optical module program downloading and quality detection, and no additional programming is required.
[0028] In one embodiment, such as Figure 1 The operating console 8 is also equipped with a barcode scanner 10, which is electrically connected to the central controller 1. The barcode scanner 10 can read the PCBA and COB information of the COB optical module 7 and feed the read PCBA and COB information back to the central controller 1. The central controller 1 retrieves the positioning information and judgment criteria based on the PCBA and COB information, and controls the drive detection unit to move the detection head 4 to the positioning point according to the positioning information. The detection head 4 performs scanning and sampling, and makes judgments based on the sampling information fed back by the detection head 4, and outputs the judgment result.
[0029] In one embodiment, such as Figure 1The operating table 8 is also equipped with a power supply 9, and the operating fixture 5, the detection head 4 and the detection drive unit are all connected to the power supply 9.
[0030] Example 2
[0031] This utility model embodiment provides an optical module production line, including a COB packaging station, a program download station and a post-processing station connected in sequence, and a COB optical module program download device provided in the above embodiment one is provided at the program download station.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A COB optical module program download device with COB quality detection function, comprising an operating table and an operating fixture arranged on the operating table, characterized in that, The operating table is also equipped with a quality inspection mechanism for detecting the glue overflow condition and / or wire bonding quality in the COB optical module. The quality inspection mechanism includes a detection head and a detection drive unit for driving the detection head closer to or away from the operating fixture.
2. The COB optical module program download device as described in claim 1, characterized in that: The detection head is an X-ray sampling machine.
3. The COB optical module program download device as described in claim 1, characterized in that: The detection drive unit includes a robotic arm capable of three-dimensional movement, the robotic arm is mounted on the operating table, and the detection head is mounted on the execution end of the robotic arm.
4. The COB optical module program download device as described in claim 3, characterized in that: The robotic arm is a three-degree-of-freedom robotic arm, comprising a first arm body, a second arm body, and a third arm body. The first arm body is connected to a bracket mounted on the operating table via a first-degree-of-freedom structure. The second arm body is connected to the first arm body via a second-degree-of-freedom structure. The third arm body is connected to the second arm body via a third-degree-of-freedom structure. The detection head is mounted at the end of the third arm body.
5. The COB optical module program download device as described in claim 1, characterized in that: The operating platform is also equipped with a central controller, and the operating fixture, the detection head, and the detection drive unit are all electrically connected to the central controller.
6. The COB optical module program download device as described in claim 5, characterized in that: The control panel is also equipped with a barcode scanner, which is electrically connected to the central controller.
7. The COB optical module program download device as described in claim 1, characterized in that: The operating platform is also equipped with a power supply, and the operating fixture, the detection head, and the detection drive unit are all connected to the power supply.
8. An optical module production line, comprising a COB packaging station, a program download station, and a post-processing station connected in sequence, characterized in that: The program download station is provided with a COB optical module program download device as described in any one of claims 1 to 7.