DIGITAL X-RAY IMAGE DETECTOR OF USING A FED DEVICE

• Main Authors: KIM, JIN YEONG, CHA, BYUNG YOUL, NAM, SANG HEE, LEE, KYU HONG, CHOI, JANG YONG, JANG, GI WON, KIM, DAE HWAN, YOON, KYOUNG JUN, PARK, JI KOON, PARK, SUNG KWANG, KANG, SANG SIK, CHO, SUNG HO
• Format: Patent
• Language: English
• Published: 04.08.2006
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; DIAGNOSIS; ELECTROGRAPHY; HOLOGRAPHY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; PHOTOGRAPHY; PHYSICS; SURGERY

Disclosed is a digital X-ray image detector using an FED, including an upper substrate and a lower substrate disposed to face each other; an anode formed beneath the upper substrate; a photoconductive layer formed beneath the anode for forming electron-hole pairs using X-rays; a cathode formed on the lower substrate; an emitter formed on the cathode for emitting electrons of the cathode; a gate electrode formed on an insulating layer provided around the emitter on the cathode; and a data processing part for converting information about the electron-hole pairs formed in the photoconductive layer by the X-rays, transferred from the anode, to digital data through signal processing including filtering, amplification, storage, or A/D conversion. The high performance digital X-ray image detector of this invention has a high image resolution and a large area, is easy to manufacture and process compared to conventional processes, and has excellent detection efficiency of electrical signals.