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公开(公告)号：US5805124A
公开(公告)日：1998-09-08
申请号：US626898
申请日：1996-04-04
IPC分类号： G09G3/30
CPC分类号： G09G3/30 , G09G2310/0267 , G09G2330/023
摘要： A method and apparatus for providing a driver circuit for an electroluminescent display panel comprising a row driver including positive row drive elements and negative row drive elements, a first power lead with a first predetermined voltage V.sub.neg connected in series through a first switch connection to a first node, the first node connected to a first current limiter to the negative row drive elements, a second current limiter operably connected between a first fixed potential to a second node, the second node connected to the positive row drive elements, a third current limiter connected between the negative row drive element and the second fixed potential, a second power lead with a second predetermined voltage V.sub.pos connected in parallel to the first node through a second switch connection and a power storage device connected between the first and second nodes, wherein the voltage across the positive and negative row drive elements is selectable, via predetermined operation of the first and second switch connections, between a) V.sub.neg and b) the difference between V.sub.pos and V.sub.neg.
摘要翻译： 一种用于提供用于电致发光显示面板的驱动器电路的方法和装置，包括：行驱动器，包括正行驱动元件和负行驱动元件;第一电源引线，具有通过第一开关连接串联连接到第一 节点，连接到负行驱动元件的第一限流器的第一节点，可操作地连接在第一固定电位到第二节点之间的第二限流器，连接到正行驱动元件的第二节点，连接到第三电流限制器的第三限流器 在所述负行驱动元件和所述第二固定电位之间，具有通过第二开关连接与所述第一节点并联连接的第二预定电压Vpos的第二电力引线和连接在所述第一和第二节点之间的电力存储设备，其中所述电压 可以通过f的预定操作来选择正负行驱动元件 第一和第二开关连接，a）Vneg和b）Vpos和Vneg之间的区别。
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公开(公告)号：US5550557A
公开(公告)日：1996-08-27
申请号：US358044
申请日：1994-12-15
IPC分类号： G09G3/30
CPC分类号： G09G3/30 , G09G2310/027 , G09G2320/0204 , G09G2330/02
摘要： A power supply for providing a symmetric drive for an AC electroluminescent (EL) display panel includes a single power supply which provides two voltage signal values of opposite polarity V.sub.pos,V.sub.neg to the panel's row drivers. The supply also corrects the difference between the two voltage signal values V.sub.pos,V.sub.neg as a function of the difference between the maximum column driver voltage value V.sub.col and its nominal value to reduce latent images on the display panel. By utilizing a single switching regulator to generate the opposite polarity row voltages V.sub.pos,V.sub.neg the circuit complexity and cost associated with providing a symmetric drive for an EL panel is reduced.
摘要翻译： 用于为AC电致发光（EL）显示面板提供对称驱动的电源包括单个电源，其向面板的行驱动器提供相反极性Vpos的两个电压信号值。 电源还校正两个电压信号值Vpos之间的差异，Vneg作为最大列驱动器电压值Vcol与其标称值之间的差的函数，以减少显示面板上的潜像。 通过利用单个开关调节器来产生相反极性的行电压Vpos，降低了与为EL面板提供对称驱动相关联的电路复杂性和成本。
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公开(公告)号：US4392084A
公开(公告)日：1983-07-05
申请号：US243292
申请日：1981-03-13
CPC分类号： H05B33/08 , Y10T307/281 , Y10T307/461
摘要： Circuitry for selectively sustaining a gaseous discharge display panel to splay selected information which circuitry permits the use of a single power supply.
摘要翻译： 用于选择性地维持气体放电显示面板以显示所选择的信息的电路，该电路允许使用单个电源。
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公开(公告)号：US5812104A
公开(公告)日：1998-09-22
申请号：US791396
申请日：1997-01-30
CPC分类号： G09G3/2011 , G09G3/30 , G09G2310/0259 , G09G2310/027
摘要： Pixel luminance of an electroluminescent display panel is controlled by a row driver applying a voltage equal to the panel's threshold voltage, and column drivers applying the voltage value above the threshold voltage to bring the pixel to the desired luminance. Each column driver independently samples a stepped ramp voltage signal at its own predetermined time selected as a function of the desired luminance. Each column driver then holds the sampled voltage value, and applies to its corresponding column electrode at the appropriate time a voltage equal to the sampled voltage value. The voltage rate of change of each individual step of the stepped ramped voltage signal can be controlled to vary the luminance levels, and to uniformly separate each of the luminance levels.
摘要翻译： 电致发光显示面板的像素亮度由施加与面板的阈值电压相等的电压的行驱动器控制，并且列驱动器将电压值施加在阈值电压以上，以使像素达到期望的亮度。 每个列驱动器以其根据期望亮度选择的其自己的预定时间独立地采样阶梯式斜坡电压信号。 每个列驱动器然后保持采样的电压值，并在适当的时间将其对应的列电极施加到等于采样的电压值的电压。 可以控制阶梯式斜坡电压信号的每个步骤的电压变化率，以改变亮度级别，并且均匀地分离每个亮度级别。
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公开(公告)号：US4954752A
公开(公告)日：1990-09-04
申请号：US282147
申请日：1988-12-09
申请人： Edward L. Young , Mohan L. Kapoor
发明人： Edward L. Young , Mohan L. Kapoor
CPC分类号： H03K17/691 , G09G3/30 , H03K17/61 , G09G2310/0267 , H03K2217/0036
摘要： A simplified row driver switching circuit for display panels and the like, including particularly electroluminescent (EL) panels, as well as plasma panels, using transformer coupling between the power supply and the row electrodes. The circuit limits energy transfer to each row electrode of the EL panel to minimize the effects of destructive arcing caused by inter-electrode shorts. The circuit is energy conservative and eliminates the need for, for example, -160V and +220V power supplies, and provides reduced stress levels for many components through transformer coupling, and all active switches are driven from ground potential. Two row driver circuits are disclosed (FIGS. 4 & 6), the latter, using a split primary coil and double sets of paired switches, allows the row electrodes to be driven to negative, as well as positive, voltages. The primary and secondary windings on the transformer (T.sub.1 of FIGS. 4 & 6) are used to store and transfer energy to the essentially capacitive row electrode load (C.sub.panel) and then back to the power source (V.sub.in), as various associated switches are pulsed "on" and released. The same power supply can be used for both the row driver and the column driver (FIG. 8).
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公开(公告)号：US4958105A
公开(公告)日：1990-09-18
申请号：US282787
申请日：1988-12-09
申请人： Edward L. Young , Mohan L. Kapoor
发明人： Edward L. Young , Mohan L. Kapoor
CPC分类号： H03K17/667 , G09G3/2965 , G09G3/30 , H03K17/668 , G09G2310/0267 , G09G2330/024 , H03K2217/0036
摘要： A simplified row driver switching circuit for display panels and the like, including particularly electroluminescent (EL) panels, as well as plasma panels, using inductance coupling between the power supply and the row electrodes. The circuit limits energy transfer to each row electrode of the EL panel through the inductance coupling, minimizing the effects of destructive arcing caused by inter-electrode shorts. The circuit is energy conservative and eliminates the need for, for example, -160 V and +220 V power supplies. Two row driver circuits are disclosed (FIGS. 4 & 6), the latter allowing the row electrodes to be driven to negative, as well as positive, voltages. Inductor(s) (L of FIG. 4; L.sub.1 & L.sub.2 of FIG. 6) are used to store and transfer energy to the row electrode load (C.sub.panel) and then back to the power source (V.sub.in), as various switches are pulsed "on" and released. The same power supply can be used for both the row driver and the column driver (FIG. 7).
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