Display device and manufacturing method thereof

The invention discloses a display device and a manufacturing method thereof. The display device comprises a substrate, a plurality of light emitting diodes and a plurality of reflection units. The light emitting diode is arranged on the substrate. The reflection units are arranged between the light emitting diodes, any one of the reflection units separates any two adjacent light emitting diodes, any one of the reflection units comprises an arc-shaped side wall and a top part far away from the substrate, the top part is a top surface or is in a shape with a plurality of surfaces, and the arc-shaped side wall is provided with a plurality of arc-shaped side walls. The top part is connected with the arc-shaped side wall through a connecting line, the tangent slope of the arc-shaped side wall is continuously and gradually changed, and when reaching the connecting line, the gradient amount of the tangent slope is changed. 一种显示装置及其制造方法，显示装置包含基板、多个发光二极管、以及多个反射单元。发光二极管设置于基板上。反射单元设置于发光二极管之间，反射单元中的任一者分隔发光二极管中相邻的任意两者，其中反