| 摘要 |
<p>PURPOSE:To obtain a color filter with black stripes by patterning dyed layers at prescribed intervals on a transparent substrate, coating a positive type photoresist thereon, exposing the resist by light except the light transmitted through the dye parts from the rear face of the substrate and developing the resist, then dyeing the developed part to black. CONSTITUTION:A gelatin layer 2 is provided on a transparent glass plate 1 and the dye parts of red, green and blue are formed thereon except the regions 3 for the black stripes. The dye parts are isolated by the regions 3. The positive type photoresist 4 is provided on the gelatin 2 and is exposed from the rear face of the substrate 1 by a high-pressure mercury lamp using a filter which absorbs or transmits the light of the wavelength region to be transmitted by the dye parts R, B, G. The positive resist of the undyed regions 3 is removed when such resist is developed. The substrate is then immersed in a black dyeing bath to dye the gelatin 2 in the region 3 parts to black by which the stripes are formed. The cost of the color filter is reduced by this method.</p> |
