硅基OLED微显示的数模融合驱动电路设计

发布时间：2018-01-22 19:06

本文关键词： 数模融合扫描策略硅基OLED微显示驱动电路多路复用结构数据流量　出处：《液晶与显示》2017年12期 　论文类型：期刊论文

【摘要】：当前,硅基OLED(organic light-emitting diode,OLED)微显示器正向高分辨率、高刷新频率方向发展。为了实现像素面积微小型化、降低扫描数据流量从而更好满足高分辨率、高刷新率的要求,提出了一种新型的有源矩阵硅基微显示驱动电路结构。该电路采用数模融合的扫描策略,该策略结合了数字脉宽调制方式和模拟幅值调制方式;设计了多列像素复用列驱动通道的结构,满足数模融合扫描方式的时序要求。最后通过对列驱动单元后仿真,得到关键时序参数,结合数模融合扫描策略确定了几个具体结构方案。在保证红绿蓝三色像素尺寸在10μm以下的情况下,与单纯的数字扫描策略相比,每秒数据流量降低了25%~64%。结果表明:基于数模融合扫描策略的硅基OLED微显示驱动电路在保证像素面积微小型化基础上,降低了扫描数据流量,有利于高分辨率高刷新率的显示。
[Abstract]:Currently, silicon-based OLED(organic light-emitting diodeo Ole microdisplays are moving towards high resolution. In order to realize the miniaturization of pixel area and reduce the scanning data flow, it can better meet the requirements of high resolution and high refresh rate. A novel active matrix silicon-based microdisplay drive circuit is proposed, which combines digital pulse width modulation with analog amplitude modulation. The structure of multi-column pixel multiplexing column driving channel is designed to meet the timing requirements of digital-analog fusion scanning mode. Finally, the key timing parameters are obtained by simulating the column drive unit. Combining the digital and analog fusion scanning strategy, several specific structure schemes are determined. When the size of the red, green and blue trichromatic pixels is less than 10 渭 m, it is compared with the simple digital scanning strategy. The results show that the silicon-based OLED microdisplay drive circuit based on digital-analog fusion scanning strategy can ensure the miniaturization of pixel area. The scan data flow is reduced, which is beneficial to the display of high resolution and high refresh rate.
【作者单位】：上海大学微电子研究与开发中心;
【基金】：国家自然科学基金资助项目(No.61674100,No.61774101)~~
【分类号】：TN383.1
【正文快照】： 对角线尺寸小于1in(1in=2.54cm)的微显示器开始被应用于医学、军事、航空航天、工业控制和消费电子等领域,特别是穿戴器件、虚拟现实、增强现实等新型应用。硅基OLED微显示器具有面积小、重量轻、视角大、功耗低、对比度高、响应速度快等优点,目前,硅基OLED微显示器正不断向高

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