还是一个最重要的工件就是运动平台，若你的平面精度达不到，也是很难实现的胶膜的均匀性更好的，这里我们就想一个的真理，好的设备不是一个工件重要，也是每个部件都是很重要的。现在显示屏领域的显示屏生产TFT、OLED也用这种方式， 因为显示器对胶的要求不是很高。

三、弯月面涂胶方式　Meniscus　Coating

     NEW optical coating materials and laser technologies have created a need for large optics with uniform, ultrathin coatings that are applied from liquid solutions. Such devices are used, for example, in high-power laser systems at LLNL and elsewhere. To manufacture these optics, coatings a micron in thickness or less need to be deposited with extreme uniformity—to within a few percent—across the entire clear aperture, which can be on the order of a square meter in size. Micron- and submicron-scale films have been traditionally applied from liquid solutions by spin coating or dip coating. However, spin coating massive optics at the high rates needed to achieve a uniform film is not practical and wastes the coating fluid. Dip coating requires large volumes of expensive coating fluids and risks intercontamination of materials in a multilayer application.