Flow behavior for micro liquid drop has been studied in the paper. First of all, some micro patterns were formed on flat surface of substrates specific. Note that the patterns could be either strip or rectangular block types where each micro block has hundreds of micro meters (μm). Then the liquid drop having volume of less than 100 pico-liters could be shot by an inkjet print head of printing robot. Thus, by varying the geometrical structures of those blocks, the inkjet flow behavior can make difference on the layer of substrate. With the fundamental of micro flow behavior, it could help applying the inkjet technology onto the color (Red, Green, Blue) coating process of micro substrate, such as color filters and PLED devices. Hence, it's expected that those industrial application of opto-electronic devices by inkjet method will be pretty promising in the near future.