Patent ID: 8623575

Claim:
A manufacturing method for a color filter (CF), comprising the following steps of: applying a light-shielding coating on a transparent substrate having an active area and a dummy area, exposing the light-shielding coating, and developing the light-shielding coating to remove all the light-shielding coating from the dummy area and obtain a black matrix in the active area; applying a color filtering coating on the transparent substrate as a whole, illuminating the active area of the transparent substrate with ultraviolet (UV) light at a first intensity, illuminating the dummy area of the transparent substrate with UV light at a second intensity smaller than the first intensity, and developing the color filtering coating to obtain first CF units having a trapezoidal cross section in the active area and a plurality of second CF units having an inverted trapezoidal cross section in the dummy area, wherein the first CF units cover at least a portion of the black matrix, and adjacent ones of the second CF units are spaced apart from each other; and a length of a side of the trapezoidal cross section that is near the transparent substrate is longer than a length of a side of the trapezoidal cross section that is away from the transparent substrate, and a length of a side of the inverted trapezoidal cross section that is near the transparent substrate is shorter than a length of a side of the inverted trapezoidal cross section that is away from the transparent substrate; and plating a conductive layer on the transparent substrate as a whole, wherein the conductive layer covers the active area continuously but covers the dummy area discontinuously.