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    • 5. 发明授权
    • Matrix addressable display with electrostatic discharge protection
    • 具有静电放电保护的矩阵可寻址显示
    • US06356250B1
    • 2002-03-12
    • US09640826
    • 2000-08-16
    • David A. CatheyGlen E. HushManny K. F. MaCraig M. DunhamDavid A. Zimlich
    • David A. CatheyGlen E. HushManny K. F. MaCraig M. DunhamDavid A. Zimlich
    • G09G328
    • H01J31/127H01J3/022H01J2201/319H01J2329/92
    • A field emission display includes electrostatic discharge protection circuits coupled to an emitter substrate and an extraction grid. In the preferred embodiment, the electrostatic discharge circuit includes diodes reverse biased between grid sections and a first reference potential or between row lines and a second reference potential. The diodes provide a current path to discharge static voltage and thereby prevent a high voltage differential from being maintained between the emitter sets and the extraction grids. The diodes thereby prevent the emitter sets from emitting electrons at a high rate that may damage or destroy the emitter sets. In one embodiment, the diodes are coupled directly between the grid sections and the row lines. In one embodiment, the diodes are formed in an insulative layer carrying the grid sections. In another embodiment, the diodes are integrated into the emitter substrate.
    • 场发射显示器包括耦合到发射极衬底和提取栅极的静电放电保护电路。 在优选实施例中,静电放电电路包括在网格部分和第一参考电位之间或在行线和第二参考电位之间反向偏置的二极管。 二极管提供电流路径来放电静电压,从而防止在发射极组和提取栅之间保持高电压差。 因此,二极管可防止发射极组以可能损坏或破坏发射极组的高速率发射电子。 在一个实施例中,二极管直接连接在网格部分和行线之间。 在一个实施例中,二极管形成在承载网格部分的绝缘层中。 在另一个实施例中,二极管被集成到发射器衬底中。
    • 6. 发明授权
    • Analog to pulse width converter for field emission displays
    • 用于场发射显示器的模拟脉冲宽度转换器
    • US6069451A
    • 2000-05-30
    • US991094
    • 1997-12-15
    • Glen E. HushRobert R. Rotzoll
    • Glen E. HushRobert R. Rotzoll
    • G09G3/10
    • G09G3/22G09G3/2014G09G2310/0259
    • A field emission display ("FED") is disclosed having a gray scale range. Input into the FED, initially, is an analog signal input. The FED, by employing an analog to pulse width converter, subsequently converts the analog input to a pulse width output, the width of which directly correlates to the amplitude of the analog input signal. To achieve this design, the analog to pulse width converter comprises a sampler for sampling the analog signal at a predetermined frequency, thereby creating a plurality of samples corresponding to the input voltage. Further, the converter comprises means for holding each of the samples. The output of the holding means is subsequently coupled with a load responsive to the output of the holding means. In one embodiment of the present invention, this load comprises a voltage controlled resistance. The voltage controlled resistance can comprise a convertor for converting each of the samples to a current source and a load for creating a voltage ramp. The voltage ramp is subsequently input to a buffer for comparing the load output with a predetermined threshold. By this design, a pulse width signal is thereby created, the width of which ranges between a minimum and a maximum value, the minimum and the maximum values corresponding to the gray scale range.
    • 公开了具有灰度范围的场发射显示(“FED”)。 最初输入FED是模拟信号输入。 FED通过采用模拟脉冲宽度转换器,随后将模拟输入转换为脉冲宽度输出,其宽度与模拟输入信号的幅度直接相关。 为了实现这一设计,模拟脉冲宽度转换器包括一个采样器,用于以预定频率对模拟信号进行采样,从而产生对应于输入电压的多个采样。 此外,转换器包括用于保持每个样品的装置。 随后,保持装置的输出与响应于保持装置的输出的负载耦合。 在本发明的一个实施例中,该负载包括受电压控制的电阻。 电压控制电阻可以包括用于将每个样本转换成电流源的转换器和用于产生电压斜坡的负载。 随后将电压斜坡输入到缓冲器,用于将负载输出与预定阈值进行比较。 通过这种设计,由此产生一个脉冲宽度信号,其宽度范围在最小值和最大值之间,最小值和最大值对应于灰度级范围。