Flat-type cathode ray tube having electrostatic and electromagnetic deflection systems

摘要

PCT No. PCT/JP82/00270 Sec. 371 Date Mar. 22, 1983 Sec. 102(e) Date Mar. 22, 1983 PCT Filed Jul. 16, 1982 PCT Pub. No. WO83/00406 PCT Pub. Date Feb. 3, 1983.A flat-type cathode ray tube is disclosed which comprises a flat tube envelope (1) in which first and second electrodes (2) and (3) are provided to face each other in the thickness direction of the envelope for presenting a first deflection system to perform an electrostatic deflection, a phosphor screen (4) is formed on the side of the first electrode (2), and a second deflection system (6) is formed between the first deflection system and an electron gun (5) to perform an electromagnetic deflection. A third electrode (10) sufficiently surrounding the region of the second deflection system (6) is formed integral with the second electrode (3) and the second and third electrodes (3) and (10) are supplied with a voltage lower than that of the first electrode (2). This flat-type cathode ray tube can reduce a power consumption and suppress a circular-arc distortion.