The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2002
Filed:
Oct. 27, 2000
Richard Wu, Hsinchu, TW;
Jau-Jiu Ju, Hsinchu Hsien, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A method of manufacturing a two-color filter. The method includes forming a first metallic layer over a substrate and then forming a second metallic layer over the first metallic layer. A patterned photoresist layer is formed over the second metallic layer. A portion of the first metallic layer and the second metallic layer in region not covered by the photoresist layer are removed by etching to form a third metallic layer and a fourth metallic layer over the substrate respectively. An optical film is formed over the photoresist layer and the substrate such that the optical film is able to cover only a portion of the sidewalls of the fourth metallic layer or a portion of the third metallic layer. The extent of coverage by the optical film on the sidewalls can be controlled through careful adjustment of the thickness of the first and the second metallic layer. Finally, the third metallic layer, the fourth metallic layer and the photoresist layer are removed so that an optical film previously attached to the sidewalls of the third and fourth metallic layer remains over the substrate.