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为了避免早期无源矩阵有机电致发光器件驱动控制电路的一些缺陷,如:“串扰”和“交叉”效应以及电路连接比较复杂,用两种方法实现了基于飞利浦公司生产的LPC2210控制芯片和晶门科技公司的SSD1339驱动芯片的驱动控制电路。首先介绍了有机电致发光器件的结构和发光原理以及芯片SSD1339和LPC2210的主要的特点;分析和比较了SSD1339的8080系列并行口和LPC2210外部存储控制单元的读写时序;分别利用LPC2210的通用输入输出单元和外部存储控制单元,成功的控制SSD1339驱动128RGB×128点阵有机电致发光屏。实验结果表明:两种方法不仅可以有效地克服早期驱动控制电路的缺陷,而且可以使有机电致发光屏显示出高质量的图片;用外部存储控制单元实现的驱动控制电路,可以实现约80 Hz的驱动帧频;而使用通用输入输出单元实现的驱动控制电路,可以单步跟踪数据的传输,因此它具有方便查错的优势。本次实验为在不同的集成环境下无源矩阵有机电致发光器件驱动控制电路的设计奠定基础。
In order to avoid some shortcomings of the driving control circuit of the early passive matrix organic electroluminescent device, such as “crosstalk” and “cross” effect and circuit connection are complicated, two methods are used to realize the LPC2210 Control chip and gate technology company SSD1339 driver chip driver control circuit. Firstly, the structure and luminescence principle of organic electroluminescent devices and the main features of the chip SSD1339 and LPC2210 are introduced. The read and write sequence of the 8080 series parallel port and the LPC2210 external memory control unit of the SSD1339 are analyzed and compared. The LPC2210 universal input Output unit and external storage control unit, the successful control SSD1339 driven 128RGB × 128 dot-matrix organic electroluminescent screen. The experimental results show that the two methods not only can effectively overcome the defects of the early drive control circuit, but also can make the organic electroluminescent display display high quality pictures. The drive control circuit implemented by the external storage control unit can achieve about 80 Hz Of the drive frame rate; and use general-purpose input and output unit to achieve the drive control circuit, you can track the single-step data transmission, so it has the advantage of easy troubleshooting. This experiment lays the foundation for the design of driving control circuit of passive matrix organic electroluminescent device in different integrated environment.