Method of making opaque grid lines for thermally-transferred color filter array element

Abstract

Abstract A process of making opaque grid lines for a color filter array element comprising a) exposing a photographic element comprising an unhardened gelatin-silver halide emulsion coated on a support to light through a mask which defines the grid pattern, the emulsion being coated at a total dry weight coverage of at least 0.5 g/m²; b) developing the element with a tanning developer to develop the exposed areas of grid lines; c) washing off the undeveloped emulsion leaving the grid line pattern on the element; and d) drying the element to produce open cells on the support divided by opaque lines of silver in hardened gelatin greater than 0.3 µm in height above the support. In a preferred embodiment, the process includes the further steps of: d) coating the cellular element with a polymeric dye-receiving layer; and e) thermally transferring individual dyes to form a color filter array element comprising a repeating mosaic pattern of colorants in a polymeric binder, the pattern being made up of color patches bounded by the opaque lines in a grid pattern.

Inventors

• 👤 Michael John Simons

Bibliographic Details