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    • 1. 发明授权
    • Plasma display device and method for driving plasma display panel
    • 等离子体显示装置及驱动等离子体显示面板的方法
    • US08384621B2
    • 2013-02-26
    • US12092216
    • 2007-08-03
    • Takahiko OriguchiHidehiko ShojiToshiyuki Maeda
    • Takahiko OriguchiHidehiko ShojiToshiyuki Maeda
    • G09G3/28
    • G09G3/296G09G3/2022G09G3/2927G09G2310/066G09G2320/041G09G2330/028
    • One field period includes a plurality of subfields each having (i) an initialization period in which a gradually descending sloping waveform voltage is applied to a scan electrode, (ii) a writing period in which a negative scan pulse voltage is applied to the scan electrode, and (iii) a sustain period. A sloping waveform voltage is generated by switching a minimum voltage in the sloping waveform voltage between a first voltage and a second voltage that has a lower voltage value than that of the first voltage. A number of subfields, in which an initialization is carried out by the sloping waveform voltage having the minimum voltage as the second voltage, is increased when a temperature of a plasma display panel is determined to be low as compared with when the temperature is determined to be not low.
    • 一个场周期包括多个子场,每个子场具有(i)向扫描电极施加逐渐下降的倾斜波形电压的初始化周期,(ii)向扫描电极施加负扫描脉冲电压的写入周期 ,(iii)维持期。 通过在具有比第一电压的电压值低的第一电压和第二电压之间的倾斜波形电压中切换最小电压来产生倾斜的波形电压。 与等温显示面板的温度相比,当等离子体显示面板的温度被确定为低时,通过具有最小电压的倾斜波形电压作为第二电压进行初始化的多个子场被增加 不低
    • 2. 发明申请
    • PLASMA DISPLAY DEVICE AND PLASMA DISPLAY PANEL DRIVING METHOD
    • 等离子体显示装置和等离子显示面板驱动方法
    • US20100118056A1
    • 2010-05-13
    • US11995021
    • 2007-07-06
    • Takahiko OriguchiHidehiko ShojiMitsuo UedaToshiyuki Maeda
    • Takahiko OriguchiHidehiko ShojiMitsuo UedaToshiyuki Maeda
    • G09G5/10
    • G09G3/2965G09G3/2022G09G3/294G09G2310/066
    • In a plasma display device and a method for driving a plasma display panel, fluctuation of emission luminance of a discharge cell is reduced and display quality of an image is improved. The plasma display device is provided with a plasma display panel having a plurality of scanning electrodes and sustaining electrodes which configure a display electrode pair. The plasma display device is also provided with a sustaining pulse generating circuit, which has a plurality of subfields having an initializing period, a writing period and a sustaining period in one field period, and generates three kinds of sustaining pulses, i.e., a first sustaining pulse to be reference, a second sustaining pulse whose start-up is sharper than that of the first sustaining pulse and that of a third sustaining pulse, and the third sustaining pulse whose trailing edge is sharper than that of the first sustaining pulse and that of the second sustaining pulse, by periodically switching the pulses. In a sustaining period of at least one subfield in one field period, the third sustaining pulse is applied to one electrode of the electrode pair, then just after the application, the second sustaining pulse is applied to the other electrode of the display electrode pair.
    • 在等离子体显示装置和等离子体显示面板的驱动方法中,放电单元的发光亮度的变动减小,图像的显示品质提高。 等离子体显示装置设置有具有构成显示电极对的多个扫描电极和维持电极的等离子体显示面板。 等离子体显示装置还具有维持脉冲发生电路,其具有在一个场周期中具有初始化周期,写入周期和维持周期的多个子场,并且产生三种维持脉冲,即,第一维持 脉冲作为参考,第二维持脉冲的启动比第一维持脉冲和第三维持脉冲的启动更尖锐,第三维持脉冲的后沿比第一维持脉冲更尖锐, 第二维持脉冲,通过周期性地切换脉冲。 在一个场周期中的至少一个子场的维持周期中,将第三维持脉冲施加到电极对的一个电极,然后在施加之后,将第二维持脉冲施加到显示电极对的另一个电极。
    • 7. 发明申请
    • DRIVING DEVICE AND DRIVING METHOD OF PLASMA DISPLAY PANEL AND PLASMA DISPLAY APPARATUS
    • 等离子体显示面板和等离子体显示装置的驱动装置和驱动方法
    • US20100259521A1
    • 2010-10-14
    • US12747003
    • 2008-09-04
    • Toshiyuki MaedaKenji OgawaNaoki NoguchiTakahiko Origuchi
    • Toshiyuki MaedaKenji OgawaNaoki NoguchiTakahiko Origuchi
    • G09G3/28G09G5/00
    • G09G3/293G09G3/2925G09G2320/0228G09G2360/16
    • A two-phase driving operation is performed by a first circuit and a second circuit in at least one sub-field. The first circuit applies a first ramp waveform that drops from a first potential to a second potential to a plurality of first scan electrodes in a setup period, and sequentially applies a scan pulse to the plurality of first scan electrodes in a write period. The second circuit applies a second ramp waveform that drops from the first potential to a third potential that is higher than the second potential to a plurality of second scan electrodes, and then raises the plurality of second scan electrodes to a fourth potential in the setup period, and holds the plurality of second scan electrodes at a fifth potential that is higher than the third potential and lower than the fourth potential in a period where the first scan pulse is applied, and then sequentially applies a scan pulse to the plurality of second electrodes in the write period. Discharge failures during write discharges can be prevented from occurring by employing the two-phase driving operation.
    • 在至少一个子场中由第一电路和第二电路执行两相驱动操作。 第一电路在初始化周期中施加从第一电位降低到第二电位的第一斜坡波形,并且在写入周期中顺序地对多个第一扫描电极施加扫描脉冲。 第二电路对第一扫描电极施加从第一电位下降到高于第二电位的第三电位的第二斜坡波形,然后在初始化周期中将多个第二扫描电极升高到第四电位 并且在施加第一扫描脉冲的周期中将多个第二扫描电极保持在高于第三电位且低于第四电位的第五电位,然后顺序地将多个第二电极施加扫描脉冲 在写期间。 可以通过采用两相驱动操作来防止写放电期间的放电故障。
    • 8. 发明申请
    • PLASMA DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
    • 等离子体显示装置及其驱动方法
    • US20100039417A1
    • 2010-02-18
    • US12513687
    • 2007-12-07
    • Toshiyuki MaedaHidehiko Shoji
    • Toshiyuki MaedaHidehiko Shoji
    • G09G5/00G09G3/28
    • G09G3/2965G09G3/2927G09G2310/066
    • A scan electrode driving circuit applies a rising ramp waveform voltage to scan electrodes (SCN1 to SCNn) to generate a first setup discharge in a first period within a setup period, applies a dropping ramp waveform voltage to the scan electrodes (SCN1 to SCNn) to generate a second setup discharge in a second period following the first period within the setup period, and applies a first positive rectangular waveform voltage (Vs), a negative rectangular waveform voltage (Va), a second positive rectangular waveform voltage (Vs) and a dropping ramp waveform voltage to the scan electrodes (SCN1 to SCNn) in a third period following the second period within the setup period. A data electrode driving circuit applies a positive rectangular waveform voltage (Vd) to data electrodes (D1 to Dm) in a period after application of the first positive rectangular waveform voltage (Vs) to the scan electrodes (SCN1 to SCNn) and before application of the negative rectangular waveform voltage (Va) to the scan electrodes (SCN1 to SCNn) in the third period.
    • 扫描电极驱动电路向扫描电极(SCN1〜SCNn)施加上升斜坡波形电压,以在初始化期间内的第一期间产生第一次建立放电,向扫描电极(SCN1〜SCNn)施加下降斜坡波形电压至 在建立周期内的第一周期之后的第二周期中产生第二设定放电,并施加第一正矩形波形电压(Vs),负矩形波形电压(Va),第二正矩形波形电压(Vs)和 在设定期间内的第二期间之后的第三期间,向扫描电极(SCN1〜SCNn)施加斜坡波形电压。 数据电极驱动电路在对扫描电极(SCN1〜SCNn)施加第一正矩形波形电压(Vs)之后的期间内施加正的矩形波形电压(Vd)至数据电极(D1〜Dm) 在第三周期中对扫描电极(SCN1〜SCNn)的负矩形波形电压(Va)。
    • 9. 发明授权
    • Plasma display device and method of driving the same
    • 等离子体显示装置及其驱动方法
    • US08199072B2
    • 2012-06-12
    • US12513687
    • 2007-12-07
    • Toshiyuki MaedaHidehiko Shoji
    • Toshiyuki MaedaHidehiko Shoji
    • G09G3/28
    • G09G3/2965G09G3/2927G09G2310/066
    • A scan electrode driving circuit applies a rising ramp waveform voltage to scan electrodes (SCN1 to SCNn) to generate a first setup discharge in a first period within a setup period, applies a dropping ramp waveform voltage to the scan electrodes (SCN1 to SCNn) to generate a second setup discharge in a second period following the first period within the setup period, and applies a first positive rectangular waveform voltage (Vs), a negative rectangular waveform voltage (Va), a second positive rectangular waveform voltage (Vs) and a dropping ramp waveform voltage to the scan electrodes (SCN1 to SCNn) in a third period following the second period within the setup period. A data electrode driving circuit applies a positive rectangular waveform voltage (Vd) to data electrodes (D1 to Dm) in a period after application of the first positive rectangular waveform voltage (Vs) to the scan electrodes (SCN1 to SCNn) and before application of the negative rectangular waveform voltage (Va) to the scan electrodes (SCN1 to SCNn) in the third period.
    • 扫描电极驱动电路向扫描电极(SCN1〜SCNn)施加上升斜坡波形电压,以在初始化期间内的第一期间产生第一次建立放电,向扫描电极(SCN1〜SCNn)施加下降斜坡波形电压至 在建立周期内的第一周期之后的第二周期中产生第二设定放电,并施加第一正矩形波形电压(Vs),负矩形波形电压(Va),第二正矩形波形电压(Vs)和 在设定期间内的第二期间之后的第三期间,向扫描电极(SCN1〜SCNn)施加斜坡波形电压。 数据电极驱动电路在对扫描电极(SCN1〜SCNn)施加第一正矩形波形电压(Vs)之后的期间内施加正的矩形波形电压(Vd)至数据电极(D1〜Dm) 在第三周期中对扫描电极(SCN1〜SCNn)的负矩形波形电压(Va)。
    • 10. 发明授权
    • Plasma display device and method of driving the same
    • 等离子体显示装置及其驱动方法
    • US08294636B2
    • 2012-10-23
    • US12513692
    • 2007-12-06
    • Toshiyuki MaedaHidehiko Shoji
    • Toshiyuki MaedaHidehiko Shoji
    • G09G3/28
    • G09G3/2927G09G3/2803G09G3/2965G09G3/298G09G2310/0267G09G2320/0238G09G2320/043
    • A scan electrode driving circuit applies a rising ramp waveform voltage to scan electrodes (SCN1 to SCNn) to generate a first setup discharge in a first period within a setup period, applies a dropping ramp waveform voltage to the scan electrodes (SCN1 to SCNn) to generate a second setup discharge in a second period following the first period within the setup period, and applies a positive rectangular waveform voltage (Va) and a negative rectangular waveform voltage (Va) to the scan electrodes (SCN1 to SCNn) in a third period following the second period within the setup period. A data electrode driving circuit applies a positive rectangular waveform voltage (Vd) to data electrodes (D1 to Dm) in a period after application of the positive rectangular waveform voltage (Vs) to the scan electrodes (SCN to SCNn) and before application of the negative rectangular waveform voltage (Va) to the scan electrodes (SCN1 to SCNn) in the third period.
    • 扫描电极驱动电路向扫描电极(SCN1〜SCNn)施加上升斜坡波形电压,以在初始化期间内的第一期间产生第一次建立放电,向扫描电极(SCN1〜SCNn)施加下降斜坡波形电压至 在所述建立周期内的所述第一期间之后的第二期间产生第二设定放电,并且在第三期间向所述扫描电极(SCN1〜SCNn)施加正的矩形波形电压(Va)和负的矩形波形电压(Va) 在设定期间之后的第二个时期。 数据电极驱动电路在将正的矩形波形电压(Vs)施加到扫描电极(SCN〜SCNn)之后的期间内施加正的矩形波形电压(Vd)到数据电极(D1〜Dm) 在第三周期中对扫描电极(SCN1〜SCNn)的负矩形波形电压(Va)。