A method of manufacturing a filter includes the following steps. Defining an adhesive layer on a surface of a substrate according to a filter pattern. Covering a conductive layer on the surface of the substrate, wherein the conductive layer includes a first covering part and a second covering part. Heating the adhesive layer and the conductive layer, wherein the first covering part of the conductive layer is attached to the adhesive layer according to the filter pattern after being heated. Removing the second covering part of the conductor layer. |