公开(公告)号：US5621425A

公开(公告)日：1997-04-15

申请号：US172633

申请日：1993-12-21

申请人： Masafumi Hoshino ,  Shigeru Senbonmatsu ,  Hirotomo Oniwa ,  Shuhei Yamamoto

发明人： Masafumi Hoshino ,  Shigeru Senbonmatsu ,  Hirotomo Oniwa ,  Shuhei Yamamoto

IPC分类号： G09G3/20 ,  G09G3/36

CPC分类号： G09G3/2011 ,  G09G3/3625

摘要： The liquid crystal display device is comprised of a matrix panel 1, a common driver 2 and a segment driver 3. A liquid crystal layer is interposed between rows of the scanning electrodes 4 and columns of signal electrodes 5. A frame memory 6 stores an inputted dot data each frame. An orthonormal signal generator 7 generates a set of orthonormal signals to sequentially feed the same in a desired combination pattern to the common driver 2 to concurrently drive a multiple of the scanning electrodes 4 to effect group sequential scanning according to the combination pattern. A dot product computation unit 8 executes dot product computation between a set of the dot data and the set of the orthonormal signals, the result of which is fed to the segment driver 3 to drive the columns of the signal electrodes 5. The group sequential scanning is repeated several times within one cycle to display a picture. The orthonormal signals are horizontally or vertically shifted to improve the quality of the displayed picture. Further, the multiple concurrent line number is optimized to balance the withstand voltage between the common driver 2 and the segment driver 3. Moreover, in the gray shading display by pulse-height modulation, a voltage pulse assigned to a virtual line of the scanning electrode is spread out to improve the gray shaded quality of the displayed picture.

摘要翻译： 液晶显示装置由矩阵面板1，公共驱动器2和片段驱动器3构成。液晶层插入在扫描电极4的行和信号电极5的列之间。帧存储器6存储输入的 点数据每帧。 正交信号发生器7产生一组正交信号，以将期望的组合模式顺序地馈送到公共驱动器2，以同时驱动多个扫描电极4，以根据组合模式进行组顺序扫描。 点积计算单元8在一组点数据和正交信号组之间执行点积计算，其结果被馈送到段驱动器3以驱动信号电极5的列。组顺序扫描 在一个周期内重复多次以显示图片。 正交信号水平或垂直移位，以提高显示图像的质量。 此外，多路并行线路数被优化以平衡公共驱动器2和段驱动器3之间的耐受电压。此外，在通过脉冲高度调制的灰度阴影显示中，分配给扫描电极的虚拟线的电压脉冲 被展开以改善显示图像的灰色阴影质量。