光学精密工程2024，Vol.32Issue(24)：3580-3593,14.DOI:10.37188/OPE.20243224.3580
面向显示墨水打印的基板高精度纠偏及定位
High precision correction and positioning of the substrate for display ink printing
摘要
Abstract
Aiming at the problem of large errors in the calculation of the deflection angle of the substrate and the position of the pixel pit in the display ink printing of e-paper,a high-precision substrate angle cor-rection and location method was proposed.Firstly,a vision detection system was constructed according to the requirements of inkjet printing,which was used for high-resolution imaging of substrate markings.The installation angle calibration and multi-camera relative position calibration of the vision system were carried out by improving the camera's intrinsic and extrinsic parameter calibration methods and improving the mi-croscopic imaging calibration method.Then,edge detection and contour moment feature calculation were performed on the substrate markings,the center pixel coordinates of the markings were extracted,and high-precision substrate correction was achieved using coordinate transformation and least squares line fit-ting.Finally,the initial pixel pit positioning was completed by indirectly using the substrate alignment marks.Experimental results show that the correction error of the substrate angle correction algorithm is within±2″,and the pixel pit positioning error is within±3 μm,far exceeding the accuracy requirements of ink filling.By establishing a vision detection system and designing substrate correction and positioning algorithms,high-precision and efficient printing filling of display ink were achieved,improving the yield of printing equipment,which is of great guiding significance for the localization of display ink printing and fill-ing equipment.关键词
墨水打印/多相机标定/角度纠偏/像素坑定位Key words
ink printing/multiple camera calibration/angle correction/pixel pit positioning分类
信息技术与安全科学引用本文复制引用
安宁,毕海,李义,徐成..面向显示墨水打印的基板高精度纠偏及定位[J].光学精密工程,2024,32(24):3580-3593,14.基金项目
国家重点研发计划(No.2021YFB3600605) （No.2021YFB3600605）
