P‐4: ΔVTH and VSS IR rise Compensable PAM and PWM Combined Oxide TFTs Mini‐LED Pixel Circuit Working at Low Voltage

Zhibo Shao, Jia Fu, Congwei Liao, Zhongfei Zou, Dezhen Zhong, Shengdong Zhang
{"title":"P‐4: ΔVTH and VSS IR rise Compensable PAM and PWM Combined Oxide TFTs Mini‐LED Pixel Circuit Working at Low Voltage","authors":"Zhibo Shao, Jia Fu, Congwei Liao, Zhongfei Zou, Dezhen Zhong, Shengdong Zhang","doi":"10.1002/sdtp.16952","DOIUrl":null,"url":null,"abstract":"This paper presents a PAM and PWM combined Mini‐LED pixel circuit based on oxide TFTs. In the PAM part, a constant current (1mA) allows Mini‐LEDs work at peak efficiency and reduce power consumption. A source follower structure compensates for ΔVTH and VSS IR rise, which has only one TFT on current path, so that the pixel circuit works at low voltage. In the PWM part, a diode connected structure compensates for ΔVTH. Simulation results show that the current error rate is less than 0.81% when ΔVTH of PAM part is within ±3 V. When VSS rises less than 3 V, the current error rate is less than 7.22%. When ΔVTH of PWM part is +3 V, emission time variation is reduced by 99.29% compared with the circuit without compensation. The supply‐voltage can be reduced from 19.7 V to 15 V thanks to the proposed Mini‐LED pixel circuit.","PeriodicalId":91069,"journal":{"name":"Digest of technical papers. SID International Symposium","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Digest of technical papers. SID International Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/sdtp.16952","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

This paper presents a PAM and PWM combined Mini‐LED pixel circuit based on oxide TFTs. In the PAM part, a constant current (1mA) allows Mini‐LEDs work at peak efficiency and reduce power consumption. A source follower structure compensates for ΔVTH and VSS IR rise, which has only one TFT on current path, so that the pixel circuit works at low voltage. In the PWM part, a diode connected structure compensates for ΔVTH. Simulation results show that the current error rate is less than 0.81% when ΔVTH of PAM part is within ±3 V. When VSS rises less than 3 V, the current error rate is less than 7.22%. When ΔVTH of PWM part is +3 V, emission time variation is reduced by 99.29% compared with the circuit without compensation. The supply‐voltage can be reduced from 19.7 V to 15 V thanks to the proposed Mini‐LED pixel circuit.
P‐4:ΔVTH和VSS IR上升可补偿PAM和PWM组合氧化物TFT迷你LED像素电路在低压下工作
本文提出了一种基于氧化物TFT的PAM和PWM组合的Mini-LED像素电路。在PAM部分,恒定电流(1mA)允许Mini-LED以峰值效率工作,并降低功耗。源极跟随器结构补偿ΔVTH和VSS IR上升,电流路径上只有一个TFT,因此像素电路在低电压下工作。在PWM部分,二极管连接结构补偿ΔVTH。仿真结果表明,当PAM部分的ΔVTH在±3V范围内时,电流误差率小于0.81%。当VSS上升小于3V时,电流错误率小于7.22%。当PWM部分的ΔVT为+3V时,与无补偿电路相比,发射时间变化减少了99.29%。由于所提出的Mini-LED像素电路,电源电压可以从19.7V降低到15V。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信