2007-184311 is referenced by 2 patents.

PROBLEM TO BE SOLVED: To provide a solid state imaging device in which a sufficient light-blocking effect is attained in a black reference pixel without increasing the number of manufacturing steps, and to provide its manufacturing method.SOLUTION: In the solid state imaging device having a wiring layer 60, the wiring layer 60 and a contact pad 30 are constituted of metal layers of different constitutive materials. Since a light blocking layer 70 formed on a black reference pixel 2SB is constituted of a metal layer formed simultaneously with the metal layer of the contact pad 30, the number of manufacturing steps is not increased and since the light blocking layer is constituted of a metal layer, light can be blocked surely and a black level signal can be obtained correctly.

Title
Solid state imaging device and its manufacturing method
Application Number
2005-380623
Publication Number
2007-184311
Application Date
December 29, 2005
Publication Date
July 19, 2007
Inventor
Enomoto Yasuyuki
Fujimagari Junichiro
Taya Keiji
Kurebayashi Hisashi
Ohashi Masanori
Abe Hideji
Maruyama Shunsuke
Assignee
Sony
IPC
H01L 27/146
H01L 27/14