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Title:
METHOD OF FORMING ON-CHIP LENS AND METHOD OF MANUFACTURING SOLID-STATE IMAGING APPARATUS
Document Type and Number:
Japanese Patent JP2007264069
Kind Code:
A
Abstract:

To provide a method of forming an on-chip lens which has a large effective diameter and has a high light convergence rate even for obliquely incident light, and a method of manufacturing a solid-state imaging apparatus including the method of forming the on-chip lens.

The method of forming the lens includes, in a step of forming a concave part, the sub-steps of: depositing a pattern film 50 formed of a second material and having an inverted shape of the concave part on a ground film 190; forming a burying film 71 in which the pattern film 50 is buried until the surface becomes flat by using a third material; and etching the burying film 51 back from the top toward the ground film 190 and digging the ground film 190 beneath the pattern film 50 to form a concave part. For the etching-back processing, a material having a higher etch rate than the third material is selectively used as the second material.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
TSUKAMOTO AKIRA
Application Number:
JP2006085739A
Publication Date:
October 11, 2007
Filing Date:
March 27, 2006
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G02B1/04; G02B3/00; H01L27/14
Domestic Patent References:
JPH0799296A1995-04-11
JP2003249634A2003-09-05
JP2001004442A2001-01-12
JP2004221487A2004-08-05
JP2006078782A2006-03-23
Attorney, Agent or Firm:
Shiro Nakajima