Vacuum fluorescent display device

Application Number: 00124148
Application Date: 2000.08.17
Publication Number: 1286491
Publication Date: 2001.03.07
Priority Information: 1999/8/25 KR 35472/99
International: H01J29/46;H01J31/10
Applicant(s) Name: Samsung SDI Co., Ltd.
Inventor(s) Name: Park Gyong-Soo
Patent Agency Code: 11105
Patent Agent: huang min
Abstract A vacuum fluorescent display (VFD) capable of reducing the absorption of electrons by a control grid to enhance the functional efficiency of electrons is disclosed. The VFD has an evacuated envelope surrounded by a face glass, a base substrate and side glasses; a plurality of filamentary cathodes for emitting electrons when a negative potential is applied; an anode that responds to electrons emitted from the cathodes, and having a positive potential applied thereto; and electron control unit for generating a repulsive electric field that allows the acceleration of electrons emitted from the cathodes in the direction of the anode. The electron control unit may be a plurality of grids behind the cathodes, or a layer of transparent conductive material deposited on the inner surface of the face glass.