Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1989-11-03
1992-05-26
Issing, Gregory C.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
313422, G09G 104, H01J 2970
Patent
active
051171597
ABSTRACT:
A flat panel type display provided with a screen, control electrodes divided in a horizontal direction of the screen, light emitting fluorescent material formed on the control electrodes, a mesh-like electrode, scanning electrodes each divided in a vertical direction of the screen and facing the mesh-like electrode, an electron source for generating electron beams in the horizontal direction of the screen and deflection unit for deflecting the beams in the vertical direction. The deflection unit is provided with a signal supply device for applying first and second voltage levels to each scanning electrode. The first voltage level is at a level similar to that applied to the control or mesh-like electrode. The second voltage level is substantially less than the first voltage level. The second voltage level is sequentially applied to each scanning electrode during a vertical scan, for a fixed time period at least as long as the time required for vertically scanning a distance in which a path of an electron reflected from a position of beam incidence with the fluorescent material becomes substantially parallel to the scanning electrodes. The time period between the start of each sequential application of the second voltage level to each successive scanning electrode is a predetermined amount which differs from the fixed time period of the second voltage level.
REFERENCES:
patent: 2863091 (1958-12-01), Epstein et al.
patent: 2961575 (1960-11-01), Pohl
patent: 3723786 (1973-03-01), Charles
Electro-Optical System Design, vol. 14, No. 1, Jan. 1982, pp. 31-42, Chicago, Ill., U.S.; T. S. Credelle: "Large-screen flat-panel television: A guided-beam display" * p. 34, line 42ff; figure 2 *.
Kawauchi Yoshikazu
Miyama Hiroshi
Nishida Jun
Tomii Kaoru
Issing Gregory C.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Flat panel type display and method for driving the display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flat panel type display and method for driving the display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flat panel type display and method for driving the display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-422303