【2017年整理】LCD驱动原理.ppt

Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. TFT驱动原理 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 目 录 一、显象基本原理 二、驱动电路介绍 三、部分功能定义介绍 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 一、显象基本原理 存储 (记录 存储 (记录 光→电子信号 转换 1、显象过程 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 2、扫描方式 1 隔行扫描(Interlace Scan 依次驱动奇数行，在下一场中驱动偶数行，在两个场中构成整个画面(Frame。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 依次驱动每一行，以1场形成1帧的方式构成整个画面,是目前TFT-LCD驱动方法。 2 逐行扫描(Progressive Scan Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Progressive Scan Vs Interlace Scan 隔行扫描 逐行扫描 隔行扫描是在播映时把“单行”及“双行”的画面合并，而每幅“奇数行”及“偶数行”的画面时间上大约会有六十分之一秒的相差，当画面合并时，多会有些偏差而导致画面不够清晰，逐行扫描之中每格画面的行数都相同，故此在进行定格时画面自然会较清晰。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 3、扫描频率 逐行扫描 ----如果分辨率为1920*1080,即有1080行,而此1080行构成1帧 帧频率是60 Frame/S ----每秒钟显示60个画面 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 4、LCD驱动方式 y1 y2 y3 y4 y5 y6 y7 x1 x2 x3 x4 x5 x6 Storage Capacitor Switching Device(TFT (Active Matrix LCD A有源(Active Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. BActive 说明 有源矩阵LCD： 有源矩阵LCD的上下表层也纵横有序排列着用铟锡氧化物(ITO做成的透明电极。在每个像素中都加入薄膜晶体管(TFT，可以迅速灵活控制单个像素单元。由于TFT电极是利用薄膜技术制作的，薄膜晶体管液晶显示器（TFT-LCD也因此得名。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1、Circuit Introduction FPC Gate Drive IC TCP Source Drive IC TCP Panel DC-DC Gamma LVDS PCB Timing