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1. US20100013907 - Separation type unit pixel of 3-dimensional image sensor and manufacturing method thereof

Office United States of America
Application Number 11917983
Application Date 27.06.2006
Publication Number 20100013907
Publication Date 21.01.2010
Grant Number 08325221
Grant Date 04.12.2012
Publication Kind B2
IPC
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
13
Stereoscopic television systems; Details thereof
02
Picture signal generators
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
13
Stereoscopic television systems; Details thereof
H04N 13/02
H04N 13/00
Applicants Siliconfile Technologies Inc.
Inventors Lee Do Young
Priority Data 10-2005-0056036 28.06.2005 KR
Title
(EN) Separation type unit pixel of 3-dimensional image sensor and manufacturing method thereof
Abstract
(EN)

A separation type unit pixel of an image sensor, which can control light that incidents onto a photodiode at various angles, and be suitable for a zoom function in a compact camera module by securing an incident angle margin, and a manufacturing method thereof are provided. The unit pixel of an image sensor includes: a first wafer including a photodiode containing impurities having an impurity type opposite to that of a semiconductor material and a pad for transmitting photoelectric charge of the photodiode to outside; a second wafer including a pixel array region in which transistors except the photodiode are arranged regularly, a peripheral circuit region having an image sensor structure except the pixel array, and a pad for connecting pixels with one another; and a connecting means connecting the pad of the first wafer and the pad of the second wafer. Accordingly, manufacturing processes can be simplified by constructing the upper wafer using only a photodiode and the lower wafer using the pixel array region except the photodiode, and costs are reduced since transistors are not included in the upper wafer portion, which in turn cannot affect the interaction with light.

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