The display industries recently demand new microscale dot-type patterns for thinner and brighter displays with high energy efficiency, which are randomly distributed with irregular separation distances and have uniform optical characteristics. We developed a new program to generate the coordinates of the controlled microscale random patterns considering their diameter and the distance to the nearest pattern for preventing overlap of each pattern. Then the microscale random patterns were machined on a metal mold using the indentation machining which is a simple and low-cost machining method. We decreased the total machining time by the optimization of machining order of the random patterns. The coordinates, the diameter and the fill-factor of the machined patterns by the indentation machining were much consistent to the designed values. The controlled microscale random patterns had uniform optical characteristics over all areas of the manufactured optical film. Moreover, if optical films have the same diameters and fill-factor, they showed the same optical characteristics even they have totally different coordinates of random microscale patterns. This technology is expected to reduce the number of the optical films and the light sources in the display, which can save much energies.

显示器行业最近需要具有高能效的，用于更薄和更亮的显示器的新型微尺度点型图案，这些图案以不规则的间隔距离随机分布并且具有均匀的光学特性。我们开发了一个新程序来生成受控微尺度随机图案的坐标，考虑它们的直径和到最近图案的距离，以防止每个图案重叠。然后，使用压痕加工在金属模具上加工微尺度随机图案，压痕加工是一种简单且低成本的加工方法。通过优化随机图案的加工顺序，我们减少了总加工时间。通过压痕加工的加工图案的坐标，直径和填充系数与设计值非常一致。受控的微尺度随机图案在所制造的光学膜的所有区域上具有均匀的光学特性。此外，如果光学膜具有相同的直径和填充因子，则即使它们具有完全不同的随机微尺度图案的坐标，它们也显示出相同的光学特性。期望该技术减少显示器中的光学膜和光源的数量，这可以节省大量能量。