High performance glass sealed x-ray tube with CNT cold cathode electron beam (C-beam)

We fabricated field emission electron sources and applied for the glass sealed x-ray tube for medical imaging devices. The x-ray tube consists of an electron beam with a patterned grown CNT emitters with RAP process. Those electron beam shows higher electron emission current and transmittance after glass seal. With the x-ray tube, we success to measure medical image with finger and high resolution PCBs. The fabricated x-ray tube shows electron transmission ratio (>90%) and current (>3 mA).