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十年前,法国提出了平板显示的结构,并研制成向列相液晶薄膜(10微米).这种薄膜夹在前面的玻璃板和背面的单晶硅片之间;前者盖住一个透明的电极,后者是用标准微电子工艺制成的寻址电路板.最近,日本松下公司提出了一种尺寸适当的整机.其样机曾在1980年7月京都召开的国际液晶会议上展出.寻址矩阵电路由240行和240列构成.每个象素由对应的行和列控制一个与电容器串联的MOS场效应管来寻址(见图1).MOS场效应管的栅极和列连接使得象素按程序受激发,而源极经过漏极电压V?的行而被偏振,构成施加在液晶象素上的视频信息.因此,每个象素是单独寻址,每次一列.倘若相应的时间常数足够大(30到40毫秒),电容器可使漏极电压保持原先电平直到下一次扫描为止.在这一过程中,电光效应是反射型动态散射模式.该平板外形尺寸为
Ten years ago, France proposed the structure of a flat panel display and developed a nematic liquid crystal film (10 microns) sandwiched between a front glass plate and a backside monocrystalline silicon wafer; the former covered a transparent Electrode, which is an addressing circuit board made using standard microelectronics processes.Matsushita of Japan recently proposed an appropriately dimensioned unit that was demonstrated at an international LCD conference in Kyoto in July 1980 . The addressing matrix circuit consists of 240 rows and 240 columns. Each pixel is controlled by a MOS field effect transistor in series with the capacitor by the corresponding row and column (see Figure 1). The gate of the MOS FET and The column connections cause the pixels to be program-activated, and the source is polarized through the row of drain voltages V? To form the video information applied to the liquid crystal pixels. Thus, each pixel is individually addressed, one column at a time . If the corresponding time constant is large enough (30 to 40 milliseconds), the capacitor maintains the drain voltage at the previous level until the next scan. In this process, the electro-optic effect is a reflective dynamic scattering mode. for