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公开(公告)号：JPH0922270A
公开(公告)日：1997-01-21
申请号：JP16668396
申请日：1996-06-07
Applicant: PIXTECH SA
Inventor： BERUNAARU BANKARU , AKUSERU YAEGERU , REINARUDO TEBUENE
Abstract: PROBLEM TO BE SOLVED: To resolve a problem that the realizing of eliminating color drifts becomes relatively complex and the problem of the voltage breakdown of a screen by providing a reproducing state in which at least anode parts are in low voltage levels and corresponding cathodes are biased to radioactive states. SOLUTION: The control method of a cathode light emitting screen is formed by providing a reproducing state in which at least anode parts are in low level voltages and corresponding cathodes are biased to radioactive states. That is, for example, color subframe periods Tr, Tg, Tb are provided in an interval in which respective strips of colors of red, green and blue are successively biased in a frame duaration period T. Moreover, a dead time Td corresponding to the reproducing stage is provided. In the dead time Td, all anode stripes of three colors are not biased. Conversely, the pair of cathode gates are biased so that electric radiations are generated.
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公开(公告)号：JPH0916119A
公开(公告)日：1997-01-17
申请号：JP16668496
申请日：1996-06-07
Applicant: PIXTECH SA
Inventor： BERUNAARU BANKARU
Abstract: PROBLEM TO BE SOLVED: To obtain the flat display screen equipped with a microchip which switches fluorescent elements supporting conductor strips of anodes by applying a voltage lower than a minimum cathode voltage at least temporarily by a control circuit that is so adapted as to address respective groups in sequence. SOLUTION: The stationary voltage of a fluorescent strip is a voltage VA1 which is lower than the minimum bias voltage of the cathode microchip. In an example of interest where a cathode array is biased between 0-30V as a function of desired brightness of a pixel of a color in question the negative voltage VA1 is selected. Therefore, when one group is not addressed any more, the corresponding transistor MN turns on and the conduction strip of this group is held at the negative voltage VA1. Consequently, the capability of the fluorescent strip for attracting electrons emitted from the microchip is suppressed by quickening discharge between a fluorescent element and the strip supporting the fluorescent element.
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公开(公告)号：JPH08293273A
公开(公告)日：1996-11-05
申请号：JP6636696
申请日：1996-03-22
Applicant: PIXTECH SA
Inventor： BERUNAARU BANKARU
Abstract: PROBLEM TO BE SOLVED: To provide a flat display screen in which the numbers of the output stages and connections for assigning gate address are lower than the number of lines. SOLUTION: This flat display screen comprises cathodes 1, arranged in rows for giving electronic impact to anodes 5 containing phosphor elements 7, first gates 20 arranged in lines and addressed respectively, and second gates 23 constituted of at least two comb-like substances 24, 25 comprising routes mutually alternately in parallel to the lines of the first gate. Identical lines of the first gate are related with the routes of the respective comb-like substances and mutual connections of the respective routes, and the cathode rows define the pixels of a screen.
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公开(公告)号：JPH08265674A
公开(公告)日：1996-10-11
申请号：JP5257296
申请日：1996-02-16
Applicant: PIXTECH SA
Inventor： BERUNAARU BANKARU
Abstract: PROBLEM TO BE SOLVED: To warrant uniform lightness of pixels of a screen according to prescribed luminescence. SOLUTION: A device controlling electrodes of a flat display screen includes 1st electrodes being components of a micro chip cathode 1, 2nd electrodes being components of an anode 5 provided to a fluorescent element 7, and gates 3 placed on a row L. At least one of the electrodes is placed on columns R, G, B. The device includes a circuit that designates an address of each column individually and interrupts a bias of each column as soon as a voltage resulting from an electric charge applied to pixels of the screen reaches a threshold voltage equivalent to prescribed luminance.
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