OLED微显示器的原子扫描策略

为了实现2K及以上超高清微型显示器的高效率高性能扫描,建立了微型显示器的原子扫描模型。对该模型采用的数学矩阵、基于分形延伸的植入运算进行研究,提出了原子扫描策略并推导了原子扫描序列。首先,对现有的PWM(脉冲宽度调制)扫描策略进行扫描性能分析。然后,在分析比较几种扫描策略性能的基础上,说明原子扫描是实现较优性能的最佳选择。实验结果表明:对于256级灰度,采用32位子空间,8位权值比为128∶64∶32∶16∶9∶4∶2∶1的原子扫描策略具有较好的线性度和较高的传输效率。在分辨率为1 600×1 600的原子扫描方案中,时钟频率为50MHz,帧频可达90Hz,线性度接近99.8%,传输效率高达100%,基本满足超高分辨率扫描系统中高帧频、较低时钟、高线性度的要求。

An atom scan strategy for OLED micro display

An atom scanning system was established in order to improve scanning efficiency and achieve resolution better than 2K for flat-panel displays. The atom scanning strategy was analyzed using mathematical matrices based on fractal geometry. First, the existing PWM scanning strategies were analyzed. Next, we performed a comparative study of the performances of different scanning strategies, and illustrated that the atom scanning method exhibits the best performance. Our experimental results indicate that linearity is preferred when the weight value of 8 bits is converted to 128:64:32:16:9:4:2:1 for 256 level gray-scale images. For a resolution of 1600×1600 with a clock frequency of 50 MHz, the scanning frame frequency reaches 90 Hz, while the linearity and transmission efficiency are 99.8% and 100%, respectively. Thus, the requirements of extremely high resolution and frame frequency, low clock frequency, and high linearity are satisfied.