IP Library › Granted Patent US 10,741,599
Granted Patent B2
US 10,741,599 · App. 15/768,378 · Granted Aug 11, 2020

Image pick-up apparatus

Inventors: Takeshi Yanagita (Tokyo, JP); Taichi Natori (Kanagawa, JP); Hirotsugu Takahashi (Kanagawa, JP); Shunsuke Maruyama (Kanagawa, JP); Yasushi Maruyama (Kanagawa, JP)
Assignee: Sony Semiconductor Solutions Corporation
H01L27/1463H01L27/14605H01L27/14621H01L27/14623H01L27/14629H01L27/14645H04N5/35563H04N5/37452H01L27/14607H01L27/14627
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Quick Facts
Patent No.
US 10,741,599
App. No.
15/768,378
Granted
Aug 11, 2020
Kind
B2
Abstract

Imaging devices and electronic apparatuses incorporating imaging devices or image pick-up elements are provided. An imaging device as disclosed can include a substrate, a first opto-electronic converter having a first area formed in the substrate, and a second opto-electronic converter having a second area formed in the substrate. The first area is larger than the second area. In addition, a light blocking wall can extend from a first surface of the substrate such that at least a portion of the light blocking wall is between the first opto-electronic converter and the second opto-electronic converter.

Claims (61)

1. An imaging device, comprising:

a substrate;

a first opto-electronic converter having a first area formed in the substrate;

a second opto-electronic converter having a second area formed in the substrate,

wherein the first area is larger than the second area;

a trench extending from a first surface of the substrate,

wherein at least a portion of the trench is between the first opto-electronic converter and the second opto-electronic converter; and

a light-blocking film,

wherein the light-blocking film is formed over at least a portion of the second area of the second opto-electronic converter,

wherein the light-blocking film absorbs a portion of light incident on the imaging device, and

wherein the light-blocking film includes a slit.

2. The imaging device of claim 1 , wherein the first and second areas are parallel to the first surface of the substrate.

3. The imaging device of claim 1 , wherein the first and second areas correspond to light-receiving surfaces of the first and second opto-electronic converters respectively.

4. The imaging device of claim 1 , wherein the first opto-electronic converter has a higher sensitivity than the second opto-electronic converter.

5. The imaging device of claim 1 , further comprising:

a pixel separation region between the first and second opto-electronic converters, wherein the trench is formed in the pixel separation region.

6. The imaging device of claim 1 , wherein a light blocking wall is formed in the trench and includes an insulating film extending from the first surface of the substrate.

7. The imaging device of claim 1 ,

wherein a light blocking wall is formed in the trench, and

wherein the light blocking wall includes at least one of a negative fixed charge film, an oxide film, and a metal.

8. The imaging device of claim 1 , wherein the light-blocking film overlaps the trench.

9. The imaging device of claim 1 , wherein the light-blocking film overlaps a portion of the first opto-electronic converter.

10. The imaging device of claim 9 , further comprising:

an on-chip lens formed over the first area of the first opto-electronic converter, wherein no on-chip lens is formed over the second area of the second opto-electronic converter.

11. The imaging device of claim 1 , further comprising:

a color filter, wherein the color filter extends across at least a portion of the first area of the first opto-electronic converter.

12. The imaging device of claim 11 , wherein the color filter extends across the light-blocking film.

13. The imaging device of claim 1 , wherein the light-blocking film forms a polarizer.

14. The imaging device of claim 1 , further comprising:

a plurality of light-blocking walls,

wherein the first opto-electronic converter extends from a first light blocking wall to a second light-blocking wall,

wherein the second opto-electronic converter extends from the second light-blocking wall to a third light blocking wall.

15. The imaging device of claim 1 , further comprising:

a plurality of first opto-electronic converters,

wherein the first opto-electronic converters are disposed in a plurality of rows and a plurality of columns;

a plurality of second opto-electronic converters, wherein the second opto-electronic converters are disposed in a plurality of rows and a plurality of columns,

wherein a centerline of at least one of the rows of the plurality of first opto-electronic converters does not intersect any of the second optoelectronic converters, wherein a centerline of at least one of the rows of the plurality of second opto-electronic converters does not intersect any of the first optoelectronic converters, and wherein a line diagonal to at least one of the rows intersects at least one of the first opto-electronic converters and at least one of the second opto-electronic converters.

16. An imaging device, comprising:

a substrate;

a first opto-electronic converter;

a second opto-electronic converter having a sensitivity lower than a sensitivity of the first opto-electronic converter;

a trench extending from a first surface of the substrate, wherein at least a portion of the trench is between the first opto-electronic converter and the second opto-electronic converter; and

a light-blocking film,

wherein the light-blocking film is formed over at least a portion of an area of the second opto-electronic converter,

wherein the light-blocking film absorbs a portion of light incident on the imaging device, and

wherein the light-blocking film includes a slit.

17. An electronic apparatus, comprising:

an optical system;

an image pick-up element that receives light from the optical system, the image pick-up element, including:

a substrate;

a first opto-electronic converter having a first area formed in the substrate;

a second opto-electronic converter having a second area formed in the substrate,

wherein the first area is larger than the second area;

a light-blocking wall extending from a first surface of the substrate,

wherein at least a portion of the light-blocking wall is between the first opto-electronic converter and the second opto-electronic converter; and

a light-blocking film,

wherein the light-blocking film is formed over at least a portion of the second area of the second opto-electronic converter,

wherein the light-blocking film absorbs a portion of light incident on the image pick-up element, and

wherein the light-blocking film includes a slit; and

a digital signal processor that processes signals received from the image pick-up element.

18. The electronic apparatus of claim 17 , wherein the electronic apparatus is included in a vehicle.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 17, 2018
From: YANAGITA, TAKESHI; NATORI, TAICHI; TAKAHASHI, HIROTSUGU; MARUYAMA, SHUNSUKE; MARUYAMA, YASUSHI
To: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Reel/Frame 045565/0578 →
Priority Claims (1)
JP 2015-209533 · Oct 26, 2015 · national
Continuity (1)
Related Publication 20180308883A1 · Oct 25, 2018
Cited By (3)
US 12,396,282 US 12,426,394 US 12,587,766