A 3D display panel assembly includes a display panel and an adjusting panel. The display panel includes a plurality of subpixels arranged in an array, any two adjacent lines along a first direction being respectively a first subpixel line and a second subpixel line, the first subpixel line including first subpixels configured to emit primary light, and the second subpixel line including second subpixels configured to display black when the first subpixel line emits the primary light. The adjusting panel includes a plurality of adjusting units arranged in an array, each line along a second direction including a plurality of continuously arranged first adjusting unit groups. A 3D display device and a method for driving the same are also provided.