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:
Sep. 27, 1994
Filed:
Feb. 22, 1993
Hyung S Lee, Seoul, KR;
Samsung Electronics Ltd., Kyunggi-do, US;
Abstract
A manufacturing method for color filter comprises steps of forming a flat layer for smoothing over an image sensor having charge coupled devices or bucket brigade device, forming a first color filter layer and a first inter-layer of dye-proof layer on said flat layer, alternately forming color filter layers and inter-layers in the same manner as above describe steps in order to form a second color filter layer, a second inter-layer, a third color filter layer and a third inter-layer, wherein the first or the third inter-layer is formed of a negative polyimide having a relatively lower thermal shrinkage. In this method, the material for forming the inter-layer which has been the problem in thermal hardening due to the relatively higher thermal shrinkage is substituted with the negative polyimide having a relatively lower thermal shrinkage, so that the stress acted on the interface between the color filter layer and the inter-layer can be minimized, so that image sensor having a superior spectrum characteristic and sensitivity can be obtained.