液态光学透明胶的制备及特性研究

Study on preparation and characteristics of LOCA

介绍了液态透明胶在触摸屏中的应用。它主要用于电容式触摸屏中触控模组与显示模组的贴合,起到填充、固定、提高对比度等作用。制备了一种液态光学透明胶(Liquid Optical Clear Adhesive-LOCA),重点研2究了其光学性能、固化性能和耐老化性能;结果表明,所制备的液态透明胶在3 000 m J/cm的固化能量下可以完全固化,黏度适用于各种贴合工艺;其透光率在99%以上,黄变指数和雾度小于0.2%,且具有优异的抗老化性能。

The main application of liquid optical clear adhesive（LOCA） in the capacitive touch screen was introduced, including the laminating of touch panel with LCD module and playing the role of fixing, filling and contrast enhancement.The LOCA was preparaed and its optical property, curing property and environmental reliability were studied. 2Results show that the LOCA has completely cured under the energy of 3 000 mJ/cm . The LOCA with a moderate viscosity can be used for various laminating process. The transmittance is over 99%, while the yellowing index and haze are less than 0.2. The LOCA also has a excellent environmental reliability.