Multicolored optical filter and its manufacture

Abstract

Abstract PURPOSE:To obtain a multicolored optical filter formed as one body on a base body such as a solid image-pickup element by a comparatively simple process, without requiring positioning of high accuracy. CONSTITUTION:An electrode 16 is divided, for instance, to 3 separated colors of red (r), green (G) and blue (B), and constitutes each picture element. A connecting pattern of a mask 24 is formed so taht a part corresponding to the R electrode 16 and a part corresponding to the same kind G electrode 16 are connected to each other independently by a lead 28R and connected to a connecting terminal 26R, and a part corresponding to the G electrode 16 and a part corrrsponding to the same kind R electrode 16 are connected to each other independently by a lead 28G and are connected to a connecting terminal 26G. When the connecting pattern for the R electrode and the G electrode 16 is formed on the mask 24 in this way, and a photoresist 22 is exposed by an ultraviolet ray 30, a transparent electrode material is left on only a part corresponding to the pattern of the mask 24. As to the B elctrode 16, too, the same process is performed. Subsequently, optical black 46 is formed by making black particles 42 adhere onto a part except a transparent electrode 32 of a CCD10. Also, on the image- pickup surface of the CCD10 which has formed the optical black, a colored particle layer is formed by means of electrophoresis.

Inventors

• 👤 Masamichi Sato
• 👤 正倫 佐藤

Bibliographic Details