TDM1.2-100-W1-S0102
TDM1.2-100-W1-S0102
TDM1.2-100-W1-S0102
1. 触摸显示模块
电阻型触摸屏的屏体部分是一块与显示器表面相匹配的多层复合薄膜，由一层玻璃或有机玻璃作为基层，表面涂有一层透明的导电层控制工程网版权所有，上面再盖有一层外表面硬化处理、光滑防刮的塑料层，它的内表面也涂有一层透明导电层，在两层导电层之间有许多细小 (小于千分英寸)的透明隔离点把它们隔开绝缘。
当手指触摸屏幕时，平常相互绝缘的两层导电层就在触摸点位置有了一个接触，因其中一面导电层接通Y轴方向的5V均匀电压场，使得侦测层的电压由零变为非零，这种接通状态被控制器侦测到后，进行A/D转换，并将得到的电压值与5V相比即可得到触摸点的Y轴坐标，同理得出X轴的坐标，这就是所有电阻技术触摸屏共同的基本原理。电阻类触摸屏的关键在于材料科技。电阻屏根据引出线数，分为四线、五线、六线等多线电阻触摸屏。电阻式触摸屏在强化玻璃表面分别涂上两层OTI透明氧化金属导电层，外面的一层OTI涂层作为导电体，第二层OTI则经过精密的网络附上横竖两个方向的+5V至0V的电压场，两层OTI之间以细小的透明隔离点隔开。当手指接触屏幕时，两层OTI导电层就会出现一个接触点，电脑同时检测电压及电流，计算出触摸的位置，反应速度为 10-20ms。
◆ 企业名称：厦门泰尼电气有限公司
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