used to refer to something or someone seen or appearing on a television or computer screen银幕(或屏幕)上
Her on-screen husband is also her partner in real life.她银幕上的丈夫也是她现实生活中的伴侣。
You can use the device to scan the image and reproduce it on-screen in an electronic format.你可以用这个仪器对图像进行扫描,以电子文件的格式将其再现在电脑屏幕上。