A high ambient contrast ratio (ACR) and brightness are critical for realizing high dynamic range (HDR) in advanced display applications. However, improving the ACR while maintaining high light output for display devices is still challenging. To solve this issue, we proposed a laminated interlaced microgroove (LIM) Janus structure, consisting of intersecting microgrooves cutting through the extinction and scattering layers, leading to highly improved ACR with less optical loss for display devices. Optical simulation was performed to optimize the LIM Janus structure, revealing the antireflection and light extraction mechanism with low reflectance and high light output. According to the high-speed dicing technique, the optimized LIM Janus film was prepared and assembled on light-emitting diode (LED) display devices. Compared with commercial display devices with graphite coating, the LIM display devices achieved a high ACR boosted from 2209 to 25 188 with an improvement of 1040% (ambient light 500 lux) while maintaining the high light output. The LIM Janus structure is facile and can be easily integrated into display devices to obtain excellent ACR and light output to satisfy the broad application of advanced displays.

中文翻译：

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使用层压交错微槽 Janus 结构提高具有高光输出的发光二极管显示设备的环境对比度

高环境对比度 (ACR) 和亮度对于在高级显示应用中实现高动态范围 (HDR) 至关重要。然而，在保持显示设备的高光输出的同时提高 ACR 仍然具有挑战性。为了解决这个问题，我们提出了一种层压交错微槽 (LIM) Janus 结构，由穿过消光层和散射层的交叉微槽组成，从而显着提高 ACR，同时减少显示设备的光学损耗。进行了光学模拟以优化 LIM Janus 结构，揭示了具有低反射率和高光输出的抗反射和光提取机制。根据高速切割技术，制备了优化的 LIM Janus 薄膜并将其组装在发光二极管 (LED) 显示设备上。与具有石墨涂层的商业显示设备相比，LIM 显示设备实现了高 ACR，从 2209 提高到 25188，提高了 1040%（环境光 500 勒克斯），同时保持了高光输出。LIM Janus 结构简单，可以很容易地集成到显示设备中，以获得出色的 ACR 和光输出，以满足高级显示器的广泛应用。