| 摘要 |
PURPOSE: An image sensor having a light collecting layer made of air inside a trench is provided to improve transmissivity by forming a color filter and the light collecting layer by one process for forming a photoresist pattern, and to simplify a fabricating process by omitting a process for forming a planarization layer necessary for a micro lens. CONSTITUTION: An interlayer dielectric covers an optical sensing unit. A trench(35) overlaps the optical sensing unit, formed inside the interlayer dielectric. A color filter pattern(36A) of a curved type covers the inlet of the trench. The light collecting layer is made of the air inside the trench. The color filter pattern is composed of photoresist. The optical sensing unit is a photodiode(33). |
