一种LED显示驱动芯片倍频OS-PWM算法  

Frequency Doubling OS-PWM Algorithm for LED Driver IC

作　　者：王震宇 王雪原 唐茂洁 范学仕 WANG Zhenyu;WANG Xueyuan;TANG Maojie;FAN Xueshi(China Key System&Integrated Circuit Co.,Ltd.,Wuxi 214072,China)

机构地区：[1]中科芯集成电路有限公司,江苏无锡214072

出　　处：《电子与封装》2022年第1期63-67,共5页Electronics & Packaging

摘　　要：为解决小点间距发光二极管(Light Emitting Diode,LED)显示屏中存在的刷新率较低和低灰显示均匀性差等问题,基于优化打散脉冲调制(Optimize-Scrambled Pulse with Modulation,OS-PWM)算法,采用时钟倍频技术,提出一种倍频OS-PWM算法。基于倍频OS-PWM算法,在不改变总灰度的前提下提高了刷新率,算法复杂度减少一半;对算法进行等级优化,提升了显示均匀性,并在实际样片中得到了验证。To solve the problems of the fine pixel pitch LED display screen,such as the low refresh rate,low gray scale,and other phenomena,an optimize-scrambled pulse with modulation(OS-PWM)algorithm based on traditional PWM algorithm is presented.The refresh rate is improved and the algorithm complexity is reduced by half without changing the total gray level.The algorithm is optimized to improve the uniformity of display,and is verified in the actual sample.

关 键 词：LED 驱动芯片 倍频OS-PWM算法 

分 类 号：TP46[自动化与计算机技术]