基于a-IGZO TFT补偿AMOLED显示器亮度变化的并行驱动像素电路

Q Engineering

Journal of Display Technology Pub Date : 2016-10-11 DOI:10.1109/JDT.2016.2616507

Chih-Lung Lin;Po-Chun Lai;Po-Cheng Lai;Po-Syun Chen;Wan-Lin Wu

{"title":"基于a-IGZO TFT补偿AMOLED显示器亮度变化的并行驱动像素电路","authors":"Chih-Lung Lin;Po-Chun Lai;Po-Cheng Lai;Po-Syun Chen;Wan-Lin Wu","doi":"10.1109/JDT.2016.2616507","DOIUrl":null,"url":null,"abstract":"This work proposes a new pixel structure based on amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) and a parallel addressing scheme for high-resolution active-matrix organic light-emitting diode (AMOLED) displays. The proposed circuit compensates for the nonuniformity of luminance that is caused by shifts in the threshold voltage (V\nTH\n) and mobility of driving TFTs. Measurement results verify that the parallel addressing scheme successfully extends the compensation time and accurately detects the V\nTH\n of the driving TFT. Moreover, the proposed circuit reduces the variations of OLED luminance from more than 83% to less than 13% when the V\nTH\n and mobility of driving TFT shifts by 1 V and 30%, respectively, and the V\nTH\n of OLED varies from 0 to 0.9 V.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1681-1687"},"PeriodicalIF":0.0000,"publicationDate":"2016-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2616507","citationCount":"17","resultStr":"{\"title\":\"Pixel Circuit With Parallel Driving Scheme for Compensating Luminance Variation Based on a-IGZO TFT for AMOLED Displays\",\"authors\":\"Chih-Lung Lin;Po-Chun Lai;Po-Cheng Lai;Po-Syun Chen;Wan-Lin Wu\",\"doi\":\"10.1109/JDT.2016.2616507\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This work proposes a new pixel structure based on amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) and a parallel addressing scheme for high-resolution active-matrix organic light-emitting diode (AMOLED) displays. The proposed circuit compensates for the nonuniformity of luminance that is caused by shifts in the threshold voltage (V\\nTH\\n) and mobility of driving TFTs. Measurement results verify that the parallel addressing scheme successfully extends the compensation time and accurately detects the V\\nTH\\n of the driving TFT. Moreover, the proposed circuit reduces the variations of OLED luminance from more than 83% to less than 13% when the V\\nTH\\n and mobility of driving TFT shifts by 1 V and 30%, respectively, and the V\\nTH\\n of OLED varies from 0 to 0.9 V.\",\"PeriodicalId\":15588,\"journal\":{\"name\":\"Journal of Display Technology\",\"volume\":\"12 12\",\"pages\":\"1681-1687\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-10-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1109/JDT.2016.2616507\",\"citationCount\":\"17\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Display Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/7588170/\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q\",\"JCRName\":\"Engineering\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Display Technology","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/7588170/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q","JCRName":"Engineering","Score":null,"Total":0}

引用次数: 17

摘要

这项工作提出了一种基于非晶铟镓锌氧化物薄膜晶体管（a-IGZO TFT）的新像素结构和用于高分辨率有源矩阵有机发光二极管（AMOLED）显示器的并行寻址方案。所提出的电路补偿了由驱动TFT的阈值电压（VTH）和迁移率的偏移引起的亮度的不均匀性。测量结果验证了并行寻址方案成功地延长了补偿时间，并准确地检测了驱动TFT的VTH。此外，当驱动TFT的VTH和迁移率分别偏移1V和30%，并且OLED的VTH从0变化到0.9V时，所提出的电路将OLED亮度的变化从大于83%降低到小于13%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Pixel Circuit With Parallel Driving Scheme for Compensating Luminance Variation Based on a-IGZO TFT for AMOLED Displays

This work proposes a new pixel structure based on amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) and a parallel addressing scheme for high-resolution active-matrix organic light-emitting diode (AMOLED) displays. The proposed circuit compensates for the nonuniformity of luminance that is caused by shifts in the threshold voltage (V _TH ) and mobility of driving TFTs. Measurement results verify that the parallel addressing scheme successfully extends the compensation time and accurately detects the V _TH of the driving TFT. Moreover, the proposed circuit reduces the variations of OLED luminance from more than 83% to less than 13% when the V _TH and mobility of driving TFT shifts by 1 V and 30%, respectively, and the V _TH of OLED varies from 0 to 0.9 V.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of Display Technology 工程技术-工程：电子与电气

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

2.8 months

期刊介绍： This publication covers the theory, material, design, fabrication, manufacturing and application of information displays and aspects of display technology that emphasize the progress in device engineering, design and simulation, materials, electronics, physics, and reliability aspects of displays and the application of displays. The Journal is sponsored by EDS, seven other IEEE societies (BT, CES, CPMT, IA, IM, PHO and SSC) and the Optical Society of America (OSA).