Effect of the process parameters on chromaticity of molding LED

• Main Authors: Chung-Yi Lin, 林忠毅
• Other Authors: 陳文瑞
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/32vsbx

碩士 === 國立虎尾科技大學 === 光電工程系光電與材料科技碩士班 === 105 === With the LED manufacturing process has becoming mature day after day, under the consideration of cost down and competition, continuous targeting the improvement of packaged finished product dimension and grain shrinking, and without affecting the specification of finished product brightness and chromaticity coordinate, it is more important to optimize the parameters of each manufacturing process. Under continuous mass production input of high value-added products, in order to avoid the rising cost caused by overall yield loss and that the gross profit margin cannot be improved, this study specially aims at optimizing the concentration ratio of chromaticity coordinate of LED manufacturing process, apply methods for grain brightness split and match with the wafer of different wave bands and corresponding fluorescent glue ingot for pressing molding, and according to the impact of fluorescent dusts of different particle diameters on chromaticity coordinate concentration ratio, the evidence of experimental evaluation can improve the yield by about 20~30%; in the environment of cost competition, if the yield can be improved continuously, it will sharply improve the overall manufacturing cost and production efficiency, and the company will have more advantages. This paper carries out test on 66 series of white light products, studying on the utilization of other conditions and methods to improve the concentration ratio of chromaticity coordinate, and establishes a set of white light molding manufacturing process as the solution to poor chromaticity coordinate concentration ratio in the future, and to early understand the colorimetric specification limits required by the customer; so as to avoid the yield loss caused by the failure to screen the wave bands of incoming grains and the sizes of their corresponding fluorescent dusts. This paper will prove the effectiveness of experiment with actual materials combinations.