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Method of making color filter arrays by transferring colorant material

  • US 5,756,240 A
  • Filed: 01/24/1997
  • Issued: 05/26/1998
  • Est. Priority Date: 01/24/1997
  • Status: Expired due to Term
First Claim
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1. A method of making a color filter array on a first substrate having an array of pixels, comprising the steps of:

  • a) depositing and patterning a photoresist layer on the first substrate to form selected openings over pixels in the array;

    b) providing a colorant layer having a heat transferable colorant material on a second substrate and positioning the second substrate such that the heat transferable colorant material is in transferable relationship but spaced a distance from the first substrate;

    c) heating the second substrate sufficiently to cause substantially all of the heat transferable colorant material to transfer across the spaced distance to the patterned photoresist layer on the first substrate; and

    d) removing the patterned photoresist layer leaving behind the heat transferable colorant material in the position of the selected openings over the pixels in the array.

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