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热词
    • 9. 发明授权
    • Addressing method and system having minimal crosstalk effects
    • 具有最小串扰效应的寻址方法和系统
    • US5473338A
    • 1995-12-05
    • US77859
    • 1993-06-16
    • Dennis W. PrinceJohn K. GrosspietschBenjamin R. CliftonTerry J. Scheffer
    • Dennis W. PrinceJohn K. GrosspietschBenjamin R. CliftonTerry J. Scheffer
    • G09G3/20G09G3/36
    • G09G3/3625G09G3/3614G09G3/3622G09G3/2007G09G3/2022
    • The optical response of the pixels of many flat panel display devices, such as liquid crystal displays (2), depends upon the spectral components, as well as the rms value, of the pixel voltage waveform during a frame period. Because each row and column electrode (10 and 11) addresses multiple pixels (14), the spectral voltage components of the voltage across any pixel during a frame period will depend upon the optical state of other pixels in the same column (11). This crosstalk phenomena can be greatly reduced by modifying the addressing signals. One method of modifying the addressing signals is to modulate them so that the spectral components of all pixel voltage waveforms fall primarily in a frequency band (54) in which the optical response is nearly independent of the frequency. Another method is to analyze (220) the spectral components of the pixel voltage waveform over a frame period before it is displayed and adjust (222) the amplitude of the addressing signals to compensate for the frequency dependence of the optical response. When using a gray scale addressing method involving an adjustment factor, such as one based upon virtual pixels (266), the value of each virtual information element (270) is multiplied by a correction factor to compensate for the different frequency components associated with the virtual row.
    • 诸如液晶显示器(2)的许多平板显示装置的像素的光学响应取决于在帧周期期间的像素电压波形的频谱分量以及有效值。 因为每个行和列电极(10和11)都寻址多个像素(14),所以在帧周期期间跨任何像素的电压的光谱电压分量将取决于同一列(11)中其他像素的光学状态。 通过修改寻址信号可以大大减少串扰现象。 修改寻址信号的一种方法是调制它们,使得所有像素电压波形的光谱分量主要落在其中光学响应几乎与频率无关的频带(54)中。 另一种方法是在显示之前的帧周期上分析(220)像素电压波形的光谱分量,并且调整(222)寻址信号的幅度以补偿光学响应的​​频率依赖性。 当使用涉及诸如基于虚拟像素(266)的调整因子的灰度级寻址方法时,将每个虚拟信息元素(270)的值乘以校正因子以补偿与虚拟像素相关联的不同频率分量 行。