一种基于模拟PWM的全彩色LED显示屏

李相国; 姚晓魁; 赵广河

doi:10.3788/YJYXS20142903.0361

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一种基于模拟PWM的全彩色LED显示屏

器件物理及器件制备技术 | 更新时间：2020-08-12

- 一种基于模拟PWM的全彩色LED显示屏
- Full-color LED display by simulation of PWM
- 液晶与显示 2014年29卷第3期页码：361-369
- 作者机构：
  
  河南工业大学信息科学与工程学院, 河南郑州 450001
- 作者简介：
- 基金信息：
  
  河南工业大学博士基金项目（No.2010BS006）()
- DOI：10.3788/YJYXS20142903.0361
  中图分类号： TN27
- 收稿日期：2013-07-16，
  
  修回日期：2013-09-22，
  
  网络出版日期：2013-10-08，
  
  纸质出版日期：2014-04-25
- 稿件说明：
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李相国, 姚晓魁, 赵广河. 一种基于模拟PWM的全彩色LED显示屏[J]. 液晶与显示, 2014,29(3): 361-369

LI Xiang-guo, YAO Xiao-kui, ZHAO Guang-he. Full-color LED display by simulation of PWM[J]. , 2014,29(3): 361-369
李相国, 姚晓魁, 赵广河. 一种基于模拟PWM的全彩色LED显示屏[J]. 液晶与显示, 2014,29(3): 361-369 DOI： 10.3788/YJYXS20142903.0361.

LI Xiang-guo, YAO Xiao-kui, ZHAO Guang-he. Full-color LED display by simulation of PWM[J]. , 2014,29(3): 361-369 DOI： 10.3788/YJYXS20142903.0361.

摘要

提出一种基于扫描方式模拟实现PWM功能的全彩色显示屏方案。该方案使用D触发器进行信息存储及LED通断控制，通过向D触发器写入信息控制LED的工作状态，按照PWM序列串值对D触发器周期循环写入来模拟实现PWM控制功能。详细介绍了系统的工作原理，设计实现了扫描控制器，并分析了系统参数及可行性。该方案的功耗及成本较低，具有功能上的灵活性，消除了传统扫描方式中闪烁及亮度损失问题，并具有较好的电源完整性及信号完整性。

Abstract

This paper presents a full-color LED display scheme based on simulation of PWM function. In this scheme

each LED is equipped with one D type flip-flop which is used to store information and control the LED on/off

and the LED status can be controlled by writing information into the D type flip-flop

thus the PWM function can be simulated and realized by writing the PWM binary code into the D type flip-flop cyclically and periodically. In the paper

the working principle of the system is introduced in detail

and the scan controller is designed carefully

and the parameters and feasibility of the system are also analyzed. Compared with traditional schemes

the proposed scheme has the advantages of lower power consumption and costs

as well as better functional flexibility; moreover

it eliminates the flickering and sacrificing brightness problem in traditional scanning scheme

and also has better signal and power integrity.

关键词

Keywords

references

邓宏贵, 梅卫平, 曹文晖,等. 基于PWM 的 LED 显示屏像素亮度控制方法[J]. 光电子技术, 2010, 30(2):131-134. Deng H G, Mei W P, Cao W H,et al.Based on the PWM of the LED display pixel a brightness control method [J].Optoelectronic Technology, 2010, 30(2): 131-134. (in Chinese)[2] 赵梓权, 王瑞光, 郑喜凤,等. 基于视觉感受的LED显示屏系统精度分析[J]. 液晶与显示, 2012, 27(3): 324-331. Zhao Z Q, Wang R G, Zheng X F,et al.Systemic accuracy analysis of LED displays based on visual perception [J].Chinese Journal of Liquid Crystals and Displays,2012, 27(3): 324-331. (in Chinese)[3] 刘祖隆, 郭震宁, 胡志伟,等. 调光方式对LED色温和光通量的影响[J]. 华侨大学学报:自然科学版, 2013, 34(1): 14-17. Liu Z L, Guo Z N, Hu Z W,et al.Effect of dimming on LED color temperature and luminous flux [J].Journal of Huaqiao University:Natural Science,2013, 34(1): 14-17. (in Chinese)[4] 李熹霖. LED 显示屏逐点色度亮度校正技术讲座[J]. 现代显示, 2011(7): 5-9. Li X L. A lecture on the technology of color and brightness correction of pixel of LED display screen [J].Advanced Display,2011(7): 5-9. (in Chinese)[5] 张俏梅. LED显示屏色度校正原理与应用[J]. 现代显示, 2012(9): 270-273. Zhang Q M. The principle and application of LED display chroma correction [J].Advanced Display,2012(9):270-273. (in Chinese)[6] 赵梓权, 王瑞光, 郑喜凤,等. LED显示屏的色域校正[J]. 液晶与显示, 2013, 28(1): 92-98. Zhao Z Q, Wang R G, Zheng X F, et al.Color gamut correction of LED displays [J].Chinese Journal of Liquid Crystals and Displays, 2013, 28(1): 92-98. (in Chinese)[7] 邓宏贵, 李志坚, 郭晟伟. 基于LED电脉冲响应的LED显示屏像素灰度校正方法[J]. 发光学报, 2010, 31(1): 145-149. Deng H G, Li Z J, Guo S W. Method of gray value correction in LED display screen based on LED electroluminescence response [J].Chinese Journal of Luminescence,2010, 31(1): 145-149. (in Chinese)[8] 阮海蓉, 夏贵勇. 基于照相的LED显示屏亮度校正方法[J]. 液晶与显示, 2012, 27(2): 193-197. Ruan H R, Xia G Y. Brightness correction method of LED display based on photographing [J].Chinese Journal of Liquid Crystals and Displays,2012, 27(2): 193-197. (in Chinese)[9] 宋超, 王瑞光, 冯英翘. LED大屏幕显示校正系数配置系统[J]. 液晶与显示, 2013, 28(3): 392-397. Song C, Wang R G, Feng Y Q. Display calibration coefficient configuration system used in LED panel [J].Chinese Journal of Liquid Crystals and Displays,2013, 28(3): 392-397. (in Chinese)[10] Day M. TLC5940 PWM dimming provides superior color quality in LED video displays [J].Analog Applications Journal,2006: 10-13.[11] 李军, 吴高英. 彩色 LED 显示屏的γ校正[J]. 现代显示, 2000(3): 46-49. Li J, Wu G Y. The γ correction of full color LED [J].Advanced Display,2000(3): 46-49. (in Chinese)[12] Ahn J H. Implementation of an LED tile controller for high-quality image display [J].Displays,2013, 34(1):17-26.[13] 陈德明, 熊列彬. 双口RAM在自动化系统中的应用[J]. 国外电子元器件, 2005(4): 20-23. Chen D M, Xiong L B. Application of dual RAM in automation system [J].International Electronic Elements,2005(4): 20-23. (in Chinese)

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