多功能OLED驱动电源的设计与实现  

Development of multifunctional power supply for OLED

作　　者：张稳稳[1] 贺锋涛[1] 董军[1] 

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121

出　　处：《红外与激光工程》2014年第6期1883-1888,共6页Infrared and Laser Engineering

基　　金：陕西省自然科学基金(2013JM1008);陕西省教育厅专项科研基金(2013JK0626);西安邮电大学青年教师科研基金(1011215;1010473)

摘　　要：针对目前有机电致发光器件(OLED)驱动电源功能单一、电路复杂和成本较高等问题,设计了一种多功能OLED驱动电源,该电源基于单片机STC89C52控制和字符液晶1602显示。其能够灵活快捷地设置OLED驱动所需的四种电源,可调恒压源、可调恒流源、占空比及频率可调的脉冲电压源和电流-电压混合源(正向恒流反向恒压),可以根据OLED样品测试的实际情况,确定不同应用条件下的电源输出。从测试结果来看,该驱动电源误差小、分辨率高、纹波系数小、稳定性好,能够完全满足设计要求,而且具有结构简单、操作方便、易于扩展、成本低的特点。A multi-function driving power supply system for the organic light emitting device （OLED） was proposed to improve the single function, circuital complexity and high cost of exiting systems. The proposed system was based on a single-chip microcomputer STC89C52 and a character liquid crystal display module LCM1602. This power supply system could flexibly provide four different power sources, i.e, a variable constant voltage source, a variable constant current source, a pulse voltage source and a hybrid current-voltage source （a voltage-controlled constant current source for direct bias and a voltage- controlled constant voltage source for reverse bias） with adjustable frequency and duty cycle. The output was regulated according to the actual testing condition of an OLED sample. Testing results show that the system was competent for demand of power design, with high stability, high resolution, low ripple quotient and small error. Meanwhile, the system had characteristics of simple structure, convenient operation, easy expansion and low cost.

关 键 词：OLED 驱动电源 单片机STC89C52 电流-电压混合源 

分 类 号：TN383.1[电子电信—物理电子学]