Invention Grant
- Patent Title: Drive device and drive method for vacuum fluorescent display
- Patent Title (中): 用于真空荧光显示的驱动装置和驱动方法
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Application No.: US14654381Application Date: 2013-12-12
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Publication No.: US09576521B2Publication Date: 2017-02-21
- Inventor: Takeshi Yachida
- Applicant: NIPPON SEIKI CO., LTD.
- Applicant Address: JP Niigata
- Assignee: NIPPON SEIKI CO., LTD.
- Current Assignee: NIPPON SEIKI CO., LTD.
- Current Assignee Address: JP Niigata
- Agency: McDermott Will & Emery LLP
- Priority: JP2012-278542 20121220
- International Application: PCT/JP2013/083300 WO 20131212
- International Announcement: WO2014/097955 WO 20140626
- Main IPC: G09G3/34
- IPC: G09G3/34 ; G09G3/22

Abstract:
Provided are a drive device and drive method for a vacuum fluorescent display that can suppress brightness variations in display images and improve display quality. A drive device for a vacuum fluorescent display is provided with a positive electrode unit in which a plurality of positive electrodes to which a phosphor is applied are disposed in a matrix shape and a negative electrode filament that discharges electrons toward the positive electrode unit. The device is provided with: a first magnetic field generating means that generates a first magnetic field perpendicular to the direction in which the positive electrode unit and the negative electrode filament face each other and that can periodically switch polarity; and a second magnetic field generating means that generates a second magnetic field that is perpendicular to the direction in which the positive electrode unit and the negative electrode filament face each other and crosses the first magnetic field and that can periodically switch polarity.
Public/Granted literature
- US20150348461A1 DRIVE DEVICE AND DRIVE METHOD FOR VACUUM FLUORESCENT DISPLAY Public/Granted day:2015-12-03
Information query
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