公开(公告)号：US3819975A

公开(公告)日：1974-06-25

申请号：US27349272

申请日：1972-07-20

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： KUNII T ,  TANAKA T ,  KANAYA S ,  NAGAYAMA S

IPC: H01J17/49 ,  H01J61/66

CPC classification number: H01J17/491

Abstract: The disclosure is of a matrix-type glow indicator tube capable of displaying a number of three figures. The indicator tube includes three groups of separate and distinct cathode elements, each group making up a figure eight. Three transverse cathode elements of each group are disposed on the top surface of an insulating plate having apertures extending therethrough, so that they extend transversely over their associated aperture. Each group also includes four longitudinal cathode elements which are disposed on the bottom surface of the insulating plate, so that they extend longitudinally under their associated aperture. An anode element is provided for each group of the cathode elements and lies in the same stratum as the longitudinal cathode elements. The anode element is positioned between the longitudinal cathode elements and extends parallel thereto. In this construction, the cathode elements of each group are energized in different combinations to provide representation of numerals zero to nine.