The first initial sign board dates back to the 192

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led sign after the quarter of the chip at the chip testing equipment produced in taiwan's t620 cheung yue-type tester. 2 results and discussion of the chip layout of our four tests of the iv characteristics, respectively, and the pi characteristics. from the iv characteristics can be seen in the following 20ma.in terms of power type led module design, the use of existing power type led technology achievements, the single power-type led device (usually in the 3w or less) through the cluster approach, to expand the cooling area, neon sign cooling heat sink, thermal efficiency and other methods successful development of better heat dissipation, high efficiency led light module, in order to achieve a direct replacement indoor incandescent, halogen, fluorescent purpose.loard can adjust the color temperature of the indoor temperature to achieve the different seasons of the automatic conversion of light and color; can change according to time of day and night, automatically alternate adjust the brightness and so on. in lighting design, break through the traditional lighting of the subject of the design constraints, design level by type,three-dimensional,led message board linear as well as the way various types oflighting effects to achieve the most optimized to meet the various needs of different customers.