A new optical structure of the quantum dot (QD)-based backlight in which the QD layer was integrated on the light guide plate (LGP) was proposed. The optical performances were studied by using optical simulation, especially from the viewpoint of brightness and color uniformities. A low-index layer was inserted between the LGP and the QD layer to maintain efficient light guiding in the LGP, and an anamorphic lens was put over the blue LED to control the light distribution in the LGP. The simulation results for the optimized structure showed that the luminance uniformity was more than 93% and that the spatial and the angular variations in the color coordinates were less than 0.01. The present study demonstrates that satisfactory luminance and color uniformities can be achieved from the integrated QD backlights via optimization of the light distribution in the LGP. The integrated structure may be helpful in reducing the number of optical components and the cost of backlights for liquid crystal display (LCD) applications.

中文翻译：

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LCD应用集成量子点背光灯亮度和颜色均匀性改善的仿真研究

提出了一种基于量子点 (QD) 的背光源的新型光学结构，其中 QD 层集成在导光板 (LGP) 上。通过使用光学模拟，特别是从亮度和颜色均匀性的角度研究了光学性能。在 LGP 和 QD 层之间插入低折射率层以保持 LGP 中的高效导光，并在蓝色 LED 上方放置变形透镜以控制 LGP 中的光分布。优化结构的仿真结果表明，亮度均匀度大于93%，色坐标空间和角度变化小于0.01。本研究表明，通过优化 LGP 中的光分布，集成 QD 背光可以实现令人满意的亮度和颜色均匀性。集成结构可能有助于减少光学组件的数量和液晶显示器 (LCD) 应用的背光成本。