Idea of Screen Resolution Icon
This appears to be a rectangle situated vertically. There is a vertical line inside the rectangle, going from the bottom left corner of the rectangle to the top right corner. There are two small triangles, one connected to the bottom left of the line and one connected to the top right end of the line.
This Screen Resolution icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,100 icons, all in the same style and quality.