| Summary: | 碩士 === 義守大學 === 電子工程學系半導體暨封裝測試產業研發碩士 === 95 === This research is mainly the company as the research object by some one of famous packing and final test manufacture in Kaohsiung. It mainly packs and tests the dynamic memory and uses the memory tester of a target company to be main tester platform. The characteristic of memory tester of the target company is that the tester and handler closely integrate together. Actually, the tester and handler are packed to sale together. It means that you have to buy the tester and the handler together. This advantage is that handler designing exactly relies on the tester that can let handler works well for the tester. Independently development, that the different kinds of tester are much different on their functionality. It’s meaning is that you must buy the tester and handler from the different the manufacture companies. That is why the memory tester of the target company is so reliable and popular on the memory devices testing area. Besides, the memory tester of the target company is reliable and it also having high throughput characteristic because it can parallel test the memory device 64 parts per a time, or 128 parts per a time, or 256 parts per a time, depend on what kind type of tester you use. It is not only having high throughput characteristic also having high speed. The max speed is 1GHz that let you can test 1GHz memory device. Summary up above advantage, make the memory tester of the target company leading other the memory tester manufacture companies so far. Of course, the price is very expensive, the new type tester price usually looks up a hundred million NT. So you can look it is capital-intensive industry. However, it is not means that you can successfully run such company as you just invest a lot of time and money, you can get back all your benefit from your investing. One of very important key point is that how to lower the cost and to higher effiency, but how to reach above key point is my research main purpose and scope because, it is impossible for my research to cover all relation layers of effience improvement due to capacity of my research. So my research will focuses on two main things:1. how to simplifies and automatizes the test system setup procedure, 2. how to makes the tester have the highest unit test throughput. For examples, if the tester’s highest throughput is 64 parts per test cycle, how to keep 64 parts per a test cycle under the lowest fixed tester time. Why my research picks up above point to be the subject of my research reason is that two factors above have effect on test efficiency bigger than others factors and they also easily identify from others, so the improvement effect is made more obviously.
About my research flow is that leads test environment and introduce the basic test theory and practicing, then define the test efficiency and point to two influence efficiency factors to do analysis and how to create the real time tester status monitoring system discussion, finally look into how to improve the test efficiency based two factors to make the company have the best competition in the memory test industry.
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