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1. 发明授权

US5434899A Phase clocked shift register with cross connecting between stages 失效
标题翻译：相位时钟移位寄存器，用于级间交叉连接
公开(公告)号：US5434899A
公开(公告)日：1995-07-18
申请号：US288793
申请日：1994-08-12
申请人： Ruquiya I. A. Huq , Sherman Weisbrod
发明人： Ruquiya I. A. Huq , Sherman Weisbrod
IPC分类号： G11C19/00 , G09G3/36 , G11C8/04 , G11C19/28 , H03K5/15
CPC分类号： G11C19/28 , G09G3/3674 , G11C8/04
摘要： A shift register for scanning a liquid crystal display includes cascaded stages. A given stage is formed with an input transistor switch that is responsive to an output pulse of a stage upstream in the chain of the cascaded stages. The input transistor switch charges a capacitance associated with a control electrode of a switched pull-up output transistor. The voltage in the capacitance conditions the output transistor for generating an output pulse when subsequently a clock signal occurs to the output transistor. A clamping transistor discharges the capacitance in a manner to prevent further generation of the output pulse when subsequent pulses of the clock signal occur. The clamping transistor is responsive to an output pulse of a stage downstream in the chain. An impedance that is developed at the control electrode is substantially higher after the clamping operation occurs and remain high for most of the vertical interval.
摘要翻译：用于扫描液晶显示器的移位寄存器包括级联级。给定级由形成在级联级链中的级上游的输出脉冲的输入晶体管开关形成。输入晶体管开关对与开关上拉输出晶体管的控制电极相关联的电容进行充电。当输出晶体管发生时钟信号时，电容中的电压使输出晶体管产生输出脉冲。钳位晶体管以这样的方式放电电容，以防止随后的时钟信号脉冲发生时进一步产生输出脉冲。钳位晶体管响应于链中下游的级的输出脉冲。在控制电极上产生的阻抗在钳位操作发生之后显着更高，并且在大部分垂直间隔中保持高电平。

2. 发明授权

US5410583A Shift register useful as a select line scanner for a liquid crystal display 失效
标题翻译：移位寄存器用作液晶显示器的选择线扫描器
公开(公告)号：US5410583A
公开(公告)日：1995-04-25
申请号：US289324
申请日：1994-08-11
申请人： Sherman Weisbrod , Ruquiya I. A. Huq
发明人： Sherman Weisbrod , Ruquiya I. A. Huq
IPC分类号： G09G3/20 , G09G3/36 , G11C19/00 , G11C19/28
CPC分类号： G11C19/28 , G11C19/00 , G09G2310/0286
摘要： A select line scanner for a liquid crystal display includes a plurality of cascaded stages each having an input terminal and an output terminal. Each stage includes a push-pull output circuit including pull up and pull down transistors driven with separate control signals. A further transistor has its conduction path coupled between the control electrode and a point of potential of sufficient value to turn the pull up transistor off. The control electrode of the further transistor is coupled to an output of a succeeding one of the cascaded stages to insure that the output of the respective stage cannot drift to an on state.
摘要翻译：用于液晶显示器的选择线扫描器包括多个具有输入端和输出端的级联级。每个级包括一个推挽输出电路，包括用单独的控制信号驱动的上拉和下拉晶体管。另一个晶体管的导通路径耦合在控制电极和足够值的电势点之间，以将上拉晶体管关断。另外晶体管的控制电极耦合到级联级的后续级的输出，以确保各级的输出不会漂移到接通状态。

3. 发明授权

US5517542A Shift register with a transistor operating in a low duty cycle 失效
标题翻译：具有在低占空比工作的晶体管的移位寄存器
公开(公告)号：US5517542A
公开(公告)日：1996-05-14
申请号：US398823
申请日：1995-03-06
申请人： Ruquiya I. A. Huq
发明人： Ruquiya I. A. Huq
IPC分类号： G11C19/00 , G09G3/36 , G11C19/28
CPC分类号： G11C19/184
摘要： A shift register for scanning a liquid crystal display includes cascaded stages. A given stage is formed with an input transistor switch that is responsive to an output pulse of a stage upstream in the chain of the cascaded stages. An output pulse of the given stage is produced in a pull-up transistor of a push-pull amplifier. A third transistor responsive to an output signal of a stage downstream of the given stage applies a control signal to a gate electrode of the pull-down transistor to render the pull-down transistor conductive.
摘要翻译：用于扫描液晶显示器的移位寄存器包括级联级。给定级由形成在级联级链中的级上游的输出脉冲的输入晶体管开关形成。给定级的输出脉冲在推挽放大器的上拉晶体管中产生。响应于给定级下游的级的输出信号的第三晶体管将控制信号施加到下拉晶体管的栅电极以使下拉晶体管导通。

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