System Overview
With the development of the IT industry and the semiconductor industry, the integrated circuit market has shown a steady growth trend. The booming development of the LED industry is increasingly demanding LED production equipment. The demand for semiconductor equipment such as solid crystal machines is increasing in the market. At the same time, the rapid development of IPC technology provides a guarantee for meeting the above requirements. Therefore, advanced technologies such as special computer control, processing and machine vision with high reliability and stability are widely used in the solid crystal machine industry, greatly improving the automation degree of LED solid crystal machines, making the equipment accurate, speed and man-machine. Interactivity and other aspects are more optimized.
Many LED automation equipment suppliers in Shenzhen have long been committed to the R&D, production, sales and service of electronic components and equipment. They are strong in the manufacture of LED solid crystal machine equipment. When using the central computer control system of the solid crystal machine, they reached a conclusion with North China Industrial Control. Friendly cooperation, North China Industrial Control 4U machine was selected as the control host by LED solid crystal machine system integrator, and the customer reflected the application effect. The application scheme of North China Industrial Control 4U machine in LED solid crystal machine is described in detail below.
System principle
The LED solid crystal machine is an automatic device that picks up the LED chip from the wafer disc and mounts it on the PCB (printed circuit board) to realize the automatic bonding of the LED chip and the defect wafer detection function, which can meet the needs of most LED production lines. It is suitable for the production of various high-quality, high-brightness LEDs (red, green, white, yellow, etc.), and is suitable for the production of triodes, semiconductor discrete devices, DIP and SOP, etc. It has a wide range of applications and strong versatility.
The LED solid crystal machine system structure mainly includes a motion control module, a pneumatic part, a machine vision part and a motion execution mechanism module, and realizes data communication with a special computer control center through a PCI bus interface.
Working principle: the loading board transfers the PCB board to the working position on the table fixture. The dispensing mechanism first dispenses the position of the PCB to be bonded to the wafer, and then the bonding arm moves from the origin position to the suction wafer position. The wafer is placed on the film-supported expander wafer disc. After the bonding arm is in position, the nozzle moves downward, the thimble moves upward to lift the wafer, and after the wafer is picked up, the bonding arm returns to the origin position (the leak detection position), and the bonding arm Then move from the origin position to the bonding position, and after the nozzle is bonded to the wafer, the bonding arm returns to the original position again, which is a complete bonding process. When a beat operation is completed, the data from the next position of the wafer is detected by machine vision, and the data is transferred to the wafer disc motor, and the motor is moved to the corresponding distance to move the next wafer to the aligned pickup wafer position. The dispensing position of the PCB is the same process, until all the dispensing positions on the PCB are bonded to the wafer, and then the transfer mechanism removes the PCB from the workbench and installs a new PCB to start a new one. Work cycle.
System advantage
The motion control part of the LED solid crystal machine system is realized by the servo motor and the stepping motor. The movement of each motor is controlled by the industry-specific computer and the motion control card. The industry-specific computer is the core part of the LED solid crystal machine control system. Mainly responsible for real-time monitoring of human-computer interaction interface management and control system, issuing motion instructions, effectively processing the information collected and transmitted by the control card, enabling each link to achieve the expected movement, ensuring the mechanical position accuracy detection and operation safety.
Under the control of the industry-specific computer of the Windows platform, the LED solid crystal machine system can make full use of hardware resources, greatly speeding up the data processing speed and improving the system operation efficiency.
System Block Diagram
System Configuration
Industrial chassis: 4U arc door industrial chassis
â—† 4U, 19-inch rack-mountable, European-American style, EIARS-310C compliant â—† Up to 5 3.5" drives can be installed â—† Front panel with lock to prevent misoperation, 2 USB ports on the front side â—† Front panel provides power and hard disk indicator â—† Special curved pressure beam design, adjustable height of curved bead
Full length industrial CPU card
â—† Socket 478 interface supporting Hyper-Threading Technology, full range of Intel Pentium 4 processors â—† Intel 865GV+ICH5 chipset â—† Two 184Pin DDR DIMM slots, support dual channel, DDR 266/333/400MHz, up to 2GB
â—† Northbridge integrated graphics, maximum dynamic sharing 96MB system memory for video memory â—† AC'97 CODEC, providing Speak out, Line-IN, MIC-IN, CD-IN function â—† RTL8100C controller, 1 10/100Mbps RJ45 interface â—† LAN / 2IDE/2SATA/4USB/LPT/2COM/ FDD
Industrial floor: PBP-15P12
Power: PW-300 hard drive: 80G
system assesment:
The North China Industrial Control System has been adopted by system integrators and has been widely used in LED automation equipment and has received high evaluation.
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