The present application provides a display panel and a display module with variable sub-pixel opening area. The display panel includes a display area, a non-display area, and a transition area disposed between the display area and the non-display area. The transition area comprises a first sub-pixel area and a second sub-pixel area, and the first sub-pixel area comprises a first opening and the second sub-pixel area comprises a second opening. The first opening is disposed closer to the display area than the second opening, and the first opening has an area greater than the area of the second opening.