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Recently, carbon-nanotube (CNT) has been widely explored for applications in cold cathode fluorescent lamp, luminescent tube, x-ray source and field emission display (FED) because of its excellent field emission properties. Among all these applications, FED using CNT cathode is very attractive. Some groups have reported FEDs using screen-printed or directly-grown CNT cathode. Compared to screen-printing, directly-growth method had some advantages such as easiness to achieve high resolution and possible lower driving voltage. In this paper, we demonstrated the process of growing CNT on glass and its application in a FED structure.