And innovative LED thermal resistance tester for LED industry packaging quality optimization push hands

2017 Taiwan International Lighting Technology Exhibition (TILS 2017) held in Nangang Exhibition Hall in April 12th, LED Taiwan exhibited the same period, attracted 150 exhibitors, booth number reached 500, the most complete collection of the lighting industry chain, as the largest in Taiwan China lighting and LED technology exhibition. In the process of innovative technology development TechSTAGE LED conference, optodisc Technology (Aurotek) technology development project of Congda and Dr. Zheng Chun independent research and development of LED resistance tester, and in LEDinside's interview on the current layout of heat detection in the LED industry market size is still small views.

In the TechSTAGE Technology Innovation Conference, optodisc technology Congda Dr. Zheng LED released their own innovative technology and equipment advantages resistance detection.

According to the LEDinside observation, the LED market in the field of backlight and lighting market have entered the mature period, the overall output appeared stagnant growth, in addition to some niche industrial applications, vehicle LED is one of the few with the rapid growth of the market scale and the application of. On the other hand, CSP LED related applications (including backlight, mobile phone flash, IR/UV LED) and intelligent energy-saving lighting has become the next opportunity to drive the output value of another wave of growth in LED key.

These areas are currently the focus of the market, with the industry gradually to high power LED development trend, manufacturers for the quality requirements of the LED measurement demand; however the thermal resistance of LED to the traditional measurement technology, not only time-consuming and can only do sampling test in the laboratory, there is no effective method to improve the LED detection system the process and the yield of the product, so the industry will need to update the solution.

The quality depends on the interaction of LED light source package in optical, electrical and thermal properties of three, waste too much (thermal loss) will reduce the efficiency of LED.

Speed, precision subvert the previous technology

According to the demand, and the show JD2020 LED thermal resistance tester to subvert the traditional testing technology, JEDEC Solid State Technology Association established in accordance with the JESD51-14 standard, and simplify the instantaneous thermal resistance measurement method, when the temperature changes of LED after power rapid measuring LED element in a timeline, and analysis of data to determine the specific structure of thermal resistance the value and achieve the goal of the optimization of LED components.

The innovation and Chun JD2020 resistance tester, won the 2017 Taiwan Excellence Award

The optodisc technology Zheng Congda with Dr. JD2020 LED thermal resistance tester

Different from the traditional thermal resistance measurement technology, and Chun said that the company's new JD2020 tester in terms of speed, accuracy and the degree of customization have been greatly improved.

First, speed. At present, the plight of LED manufacturers is: in the LED production line can only be done for the brightness and voltage fast detection, LED thermal resistance testing should be sent to the laboratory using special instruments. It takes 10 minutes to detect a complete thermal resistance coefficient or thermal structure of the LED on average. And Chun JD2020 tester is a significant shortening of the measurement time, measuring a LED component requires only 0.1-0.2 seconds, you can measure the whole batch of LED components, improve the overall yield.

Secondly, in terms of accuracy, compared with the existing technology, and the JD2020 can be more effective to determine the thermal properties of the packaging materials. The key point of LED thermal resistance measurement is to analyze the two key structures that affect the heat dissipation of LED: the distribution of solid crystal layer and the distribution of cloth.

At present, the existing X optical detection technology, ultrasonic measurement results of two-dimensional images, less than the misjudgment of and easily; in contrast, LED and thermal resistance tester developed by Chun can change a complete measurement of thermal energy from air conduction to the package during this period of time, thermal resistance, thermal resistance coefficient to find the high part, analysis the solid crystal layer and on the quality of advanced classification, auxiliary cooling package LED manufacturers to find defects, improve the quality of LED, do LED optimization, it is very important to the development of high power LED to the day after.

The JD2020 production line and do one stop or two station integration, achieve rapid and accurate detection of line resistance.

Flexible customization to achieve the integration of online detection on the downstream to create a win-win situation

Furthermore, in terms of customization, JD2020 and traditional instruments the biggest difference is that can do the integration and production of online AT platform, which is LED component of photoelectric thermal characteristics of the whole production line can be detected in the.

Dr. Zheng explained that the integration of online units can be divided into single stop and double stop. In the single station architecture, the Sorter will be sent to the tester and the LED component to provide the current test classification; dual station integrated measurement by the two testers simultaneously measuring LED thermal structure, saving the overall test time. He stressed: according to customer needs to provide a different degree of customization of the production line machine integration, to achieve the full inspection of the quality of online LED packaging, and is consistent with the service and objectives."

And Chun JD2020 successfully imported the high power CSP LED, LED PCB thermal resistance testing and academic institutions in the market, to provide good quality for thermal resistance test, LED manufacturers to reduce non-performing products complaints, improve product yield and reduce production cost; at the same time, and Chun has available and test solution factory the machine integration, hoping to gradually in the high power LED market to break the foreign monopoly promotion accounted for. In the aspect of low power LED market layout, and Chun is also actively developing other LED test and measurement method, for example: to replace for the detection of wire bonding (wire bonding) the traditional disruptive technology quality, provide more effective quality analysis scheme.

Looking to the future trend of technology, the current LED thermal resistance test is still just the beginning of the industry, but for the future development and introduction of high power LED LED plant is necessary for the detection technology. Dr. Cheng believes that in addition to lighting