公开(公告)号：US06600257B2

公开(公告)日：2003-07-29

申请号：US09951866

申请日：2001-09-13

Applicant: Georg Friedrich Gaertner ,  Detlef Raasch

Inventor： Georg Friedrich Gaertner ,  Detlef Raasch

IPC: H01J1142

CPC classification number: H01J1/142

Abstract: A cathode ray tube is provided with at least one oxide cathode including a cathode carrier with a cathode base of a cathode metal and a cathode coating of an electron-emitting material with oxide particles. The oxide particles contain an alkaline earth oxide selected from the group formed by the oxides of calcium, strontium, and barium, doped with an oxide doping in a quantity ranging from 120 to maximally 500 ppm of an oxide selected from the oxides of scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium. The electron-emitting material has an electric conductance of 3*10−3 &OHgr;−1 cm−1 to 12.5*10−3 &OHgr;−1 cm−1.

Abstract translation: 阴极射线管设置有至少一个氧化物阴极，其包括具有阴极金属阴极基体的阴极载体和具有氧化物颗粒的电子发射材料的阴极涂层。 氧化物颗粒含有选自由钙，锶和钡的氧化物形成的基团中的碱土金属氧化物，其掺杂的氧化物掺杂量为120至最大500ppm，氧化物选自钪，钇的氧化物 镧，铈，镨，钕，钐，铕，钆，铽，镝，钬，铒，ium，镱和镥。 电子发射材料的电导率为3×10-3欧米伽-1厘米-1至12.5×10-3欧米加-1厘米-1。