SOLID STATE IMAGE PICKUP APPARATUS AND IMAGE PICKUP SYSTEM

• US 20090201406A1
• Filed: 03/30/2009
• Published: 08/13/2009
• Est. Priority Date: 02/13/2004
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Okita, Akira, Takada, Hideaki, Hiyama, Hiroki
• Application Number:
  US12/413,820
• Publication Number:
  US 20090201406A1
• Time in Patent Office: Days
• US Class Current: 348/308
• CPC Class Codes: H01L 27/14603 Special geometry or disposition of pixel-elements, address-lines or gate-electrodes
• CPC Class Codes: H01L 27/14609 Pixel-elements with integrated switching, control, storage or amplification elements scanning details of imagers (circuitry of solid-state image sensors H04N25/00); circuitry of imagers H04N25/70
• CPC Class Codes: H01L 27/14623 Optical shielding

Abstract

The invention is to reduce a color mixing resulting from influences of adjacent pixels. The invention provides a solid-state image pickup apparatus including plural pixels each including a PN junction area constituting a photoelectric conversion area, a floating diffusion area for holding a charge outputted from the PN junction area, an amplifying transistor for amplifying the charge in the floating diffusion area, and a wiring for connecting at least the floating diffusion area, a gate electrode of the amplifying transistor and a resetting MOS transistor, and a signal output line for outputting signals from the amplifying transistors, the apparatus including shield lines between the wiring of one pixel or the floating diffusion area and the wiring of one pixel and the signal output line of another adjacent pixel.

Claims

1. :

A solid-state image pickup apparatus including plural pixels each comprising a photoelectric conversion area, a floating diffusion area for holding a charge outputted from the photoelectric conversion area, an amplifier for amplifying the charge in the floating diffusion area, and a wiring, wherein at least an end of the wiring is connected with the floating diffusion area; and

a signal output line for outputting signals from the amplifiers, the apparatus comprising;

a shield line between the wiring of one pixel or the floating diffusion area and the wiring of one pixel and the signal output line of another pixel adjacent to said one pixel.

2. :

A solid-state image pickup apparatus according to claim 1, wherein a part of the wiring is connected to an input portion of the amplifier.

3. :

A solid-state image pickup apparatus according to claim 1, wherein the pixel includes resetting means which resets the floating diffusion area, and a part of the wiring is connected to the resetting means.

4. :

A solid-state image pickup apparatus according to claim 1, wherein each of the plural pixels is provided in a position where the photoelectric conversion area is positioned between at least a part of the floating diffusion area and the signal output line.

5. :

A solid-state image pickup apparatus according to claim 1, wherein a distance between the shield line and the floating diffusion area is shorter than a distance between the floating diffusion area of said one pixel and the signal output line of said adjacent pixel.

6. :

A solid-state image pickup apparatus according to claim 1, wherein at least a part of the shield line is formed by a wiring layer same as that of the wiring.

7. :

A solid-state image pickup apparatus according to claim 1, wherein at least a part of the shield line is formed by a wiring layer same as that of the signal output line.

8. :

A solid-state image pickup apparatus according to claim 1, wherein at least a part of the shield line is formed by a first wiring layer same as that of the wiring, and a second wiring layer same as that of the signal output line.

9. :

A solid-state image pickup apparatus according to claim 8, wherein a part of the shield line formed by the first and second wiring layers is provided around the floating diffusion area.

10. :

A solid-state image pickup apparatus according to claim 1, wherein, in an area excluding a periphery of the floating diffusion area, the wiring, the signal output line and the shield line are formed by a same wiring layer.

11. :

A solid-state image pickup apparatus according to claim 1, wherein said one pixel and said another pixel are pixels for different colors.

15. :

An image pickup system comprising a solid-state image pickup apparatus according to claim 1, an optical system for focusing light on the solid-state image pickup apparatus, and a signal processing circuit for processing an output signal from the solid-state image pickup apparatus.

12. :

A solid-state image pickup apparatus including plural pixels each comprising a photoelectric conversion area, a floating diffusion area for holding a charge outputted from the photoelectric conversion area, an amplifier for amplifying the charge in the floating diffusion area, and a wiring, wherein at least an end of the wiring is connected with the floating diffusion area; and

a signal output line for outputting signals from the amplifiers, wherein;

the signal output line is formed around the floating diffusion area so as to detour the floating diffusion area.

16. :

An image pickup system comprising a solid-state image pickup apparatus according to claim 12, an optical system for focusing light on the solid-state image pickup apparatus, and a signal processing circuit for processing an output signal from the solid-state image pickup apparatus.

13. :

A solid-state image pickup apparatus including plural pixels each comprising a photoelectric conversion area, a floating diffusion area for holding a charge outputted from the photoelectric conversion area, an amplifier for amplifying the charge in the floating diffusion area, and a wiring, wherein at least an end of the wiring is connected with the floating diffusion area; and

a signal output line for outputting signals from the amplifiers, wherein;

at least a part of the wiring is formed with a larger width than in other wirings including the signal output line.

17. :

An image pickup system comprising a solid-state image pickup apparatus according to claim 13, an optical system for focusing light on the solid-state image pickup apparatus, and a signal processing circuit for processing an output signal from the solid-state image pickup apparatus.

14. :

(canceled)

18. (canceled)