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1. 发明授权

US5724058A Gray scale display driving method of a matrix liquid crystal display and driving apparatus therefor 失效
标题翻译：矩阵液晶显示器及其驱动装置的灰度显示驱动方法
公开(公告)号：US5724058A
公开(公告)日：1998-03-03
申请号：US547920
申请日：1995-10-25
申请人： Sun-jung Choi , Cheol-woo Park , Choon-yul Oh , Min-seok Kim
发明人： Sun-jung Choi , Cheol-woo Park , Choon-yul Oh , Min-seok Kim
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36 , G09G5/00
CPC分类号： G09G3/2011 , G09G3/3622 , G09G3/3625 , G09G3/2014 , G09G3/2025 , G09G3/2059
摘要： A gray scale display driving method of a matrix liquid crystal display (LCD) and a display driver implementing this method, can reduce the scanning and data electrode driving signal voltages and the driving voltage magnitude variation for the respective sub-frames and can improve the picture quality. The method includes the steps of determining an n-bit error-diffused value of N-bit picture data, where n is smaller than N, converting the N-bit picture data into an M-bit code, where M is larger than or equal to N, error-diffusing n-bits of the converted picture data, and displaying picture data of M-n bits, with n bits being error-diffused, as a picture by a gray display method.
摘要翻译：矩阵式液晶显示器（LCD）的灰度显示驱动方法和实现该方法的显示驱动器可以减少扫描和数据电极驱动信号电压以及各子帧的驱动电压幅度变化并且可以改善图像质量。该方法包括以下步骤：确定n比特小于N的N比特图像数据的n比特误差扩散值，将N比特图像数据转换成M比特码，其中M大于等于到N，对转换的图像数据进行n位的误差扩散，并且通过灰度显示方法将n位误差扩散的Mn位的图像数据显示为图像。

2. 发明授权

US5657041A Method for driving a matrix liquid crystal display panel with reduced cross-talk and improved brightness ratio 失效
标题翻译：具有减少串扰和提高亮度比的矩阵液晶显示面板驱动方法
公开(公告)号：US5657041A
公开(公告)日：1997-08-12
申请号：US451989
申请日：1995-05-26
申请人： Sun-jung Choi
发明人： Sun-jung Choi
IPC分类号： G09G3/36
CPC分类号： G09G3/3622 , G09G3/3692 , G09G2310/0205 , G09G2310/0283 , G09G2320/0209
摘要： A method of driving a matrix liquid crystal display (LCD) panel can improve LCD response characteristics due to an improved duty ratio, by overlapping scanning electrode driving signals internally having a positive selection pulse and a negative compensation pulse sequentially by a predetermined interval, or, at the time of driving two lines, by applying a signal whose sequence of selection pulse and compensation pulse of the scanning electrode driving signal applied thereto are reversed and overlapping a predetermined interval thereof. Also, when a data electrode driving signal is switched, since the signal is switched after maintaining an intermediate voltage level, at the interval where the scanning electrode driving signals are sequentially overlapped, a rapid change in voltage level can be prevented, that is, the data electrode driving signal variation is improved, which leads to a remarkable reduction of a waveform differential induced for a non-selection scanning electrode driving signal, thereby considerably reducing the crosstalk of an LCD.
摘要翻译：通过将内部具有正选择脉冲和负补偿脉冲的扫描电极驱动信号以预定的间隔重叠，驱动矩阵液晶显示（LCD）面板的方法可以改善由于占空比提高的LCD响应特性，或者，在驱动两行时，通过施加其施加的扫描电极驱动信号的选择脉冲和补偿脉冲的顺序被反转并以其预定间隔重叠的信号。此外，当切换数据电极驱动信号时，由于在维持中间电压电平之后切换信号，所以在扫描电极驱动信号顺序重叠的间隔处，可以防止电压电平的快速变化，即，数据电极驱动信号的变化得到改善，导致非选择扫描电极驱动信号引起的波形差异显着降低，从而显着地降低了LCD的串扰。

3. 发明授权

US5917471A Method for displaying gray scales of image display unit 失效
标题翻译：用于显示图像显示单元的灰度的方法
公开(公告)号：US5917471A
公开(公告)日：1999-06-29
申请号：US719649
申请日：1996-09-25
申请人： Sun-Jung Choi
发明人： Sun-Jung Choi
IPC分类号： G09G3/36 , G09G3/20 , G09G3/28 , G09G3/291 , G09G3/296 , G09G5/10
CPC分类号： G09G3/2007 , G09G3/2059 , G09G2320/0271 , G09G3/2025 , G09G3/2081 , G09G3/3622 , G09G3/3625
摘要： A gray scale display method includes converting the binary code of conventional picture data into an optimal code, based on display system characteristics. Gray levels of an image to be displayed are error-diffused and displayed using frame rate modulation. In order to reduce the likelihood of saturation of the gray levels, the maximum value of data displayed according to the optimal code is greater than or equal to the maximum value of the picture data displayed according to a conventional binary code. In addition, the number of adjacent gray levels is minimized. As a result, the driving voltage for driving electrodes in a display device and picture cross talk are reduced.
摘要翻译：灰度显示方法包括基于显示系统特性将传统图像数据的二进制码转换成最佳码。要显示的图像的灰度级别使用帧速率调制进行错误扩散和显示。为了降低灰度级饱和的可能性，根据最佳代码显示的数据的最大值大于或等于根据常规二进制代码显示的图像数据的最大值。另外，相邻灰度级数也被最小化。结果，降低了显示装置中的驱动电极的驱动电压和图像串扰。

4. 发明授权

US5774103A Method for driving a liquid crystal display 失效
标题翻译：驱动液晶显示器的方法
公开(公告)号：US5774103A
公开(公告)日：1998-06-30
申请号：US552367
申请日：1995-11-02
申请人： Sun-jung Choi , Cheol-woo Park , Choon-yul Oh
发明人： Sun-jung Choi , Cheol-woo Park , Choon-yul Oh
IPC分类号： G02F1/133 , G09G3/36 , G09G3/20
CPC分类号： G09G3/3622 , G09G2310/0205
摘要： In a method for driving a matrix liquid crystal display (LCD), whereby the selection ratio of a scanning electrode is improved and the voltage magnitude variation is considerably reduced, the scanning electrode driving signals are made to overlap each other according to an orthogonal function to then be sequentially applied to adjacent scanning electrodes. The data electrode driving signals are made to change in their voltage level through the step of maintaining an intermediate voltage level in the overlap interval to then be applied to data electrodes in the alternative, or the scanning electrode driving signals having opposite polarity are periodically applied to adjacent scanning electrodes. Therefore, the selection ratio of scanning electrodes are improved and the generation of the waveform differential is minimized, thereby reducing the crosstalk generated in a picture.
摘要翻译：在驱动矩阵液晶显示器（LCD）的方法中，扫描电极的选择比提高并且电压幅度变化显着降低，使得扫描电极驱动信号根据正交函数相互重叠然后依次施加到相邻的扫描电极。数据电极驱动信号通过保持重叠间隔中的中间电压水平的步骤而改变其电压电平，然后替代地施加到数据电极，或者具有相反极性的扫描电极驱动信号周期性地施加到相邻的扫描电极。因此，提高了扫描电极的选择比，并且使波形差的产生最小化，从而减少了图像中产生的串扰。

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