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Photoelectric conversion device and image pickup system

A photoelectric conversion device and photoelectric conversion technology, applied in radiation control devices, circuits, electrical components, etc., can solve the problems of inaccurate distribution of light and reduced sensitivity

Active Publication Date: 2018-07-06
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the mode of Japanese Patent Laid-Open No. 2009-158800, sensitivity (sensitivity) is lowered, and in addition, light cannot be distributed to two photodiodes with a high degree of precision

Method used

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  • Photoelectric conversion device and image pickup system
  • Photoelectric conversion device and image pickup system
  • Photoelectric conversion device and image pickup system

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Embodiment Construction

[0016] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The modes described below are just one example, and the present disclosure is not limited thereto. In the description and drawings given below, configurations common to a plurality of drawings are denoted by common reference numerals. Common configurations will be described with reference to a plurality of drawings, and descriptions of configurations denoted by common reference numerals are omitted as necessary. Regarding items that will not be described below, appropriate techniques can be applied thereto.

[0017] Figure 1A is a diagram schematically showing a photoelectric conversion device 10 as a pixel amplification image sensor. Figure 1A The illustrated photoelectric conversion device 10 includes a light receiving region 21 as a region surrounded by alternate chain lines, and a peripheral region 22 as a region between the alternate chain lines and double dash...

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Abstract

A photoelectric conversion apparatus including a light-receiving element, including: a plurality of photoelectric conversion portions; a separating portion located between the plurality of photoelectric conversion portions; and a light guide portion surrounded by an insulation film including at least one insulation layer and provided so as to extend over the plurality of photoelectric conversion portions, and the light guide portion includes: a high refractive index part having a refractive index higher than a refractive index of the insulation layer; and a low refractive index part having a refractive index higher than the refractive index of the insulation layer and lower than the refractive index of the high refractive index part, and the high refractive index part is located on each of the plurality of photoelectric conversion portions and the low refractive index part is located on the separating portion.

Description

technical field [0001] The present disclosure relates to a photoelectric conversion device having a light guiding portion. Background technique [0002] There are known photoelectric conversion devices configured to perform focus detection by using a plurality of photoelectric conversion sections based on the phase difference method. A configuration in which a single pixel has a plurality of photoelectric conversion sections has many advantages in performance improvement of an image pickup system such as speed increase due to improvement in transfer efficiency or widening of dynamic range and focus detection. [0003] Japanese Patent Laid-Open No. 2009-158800 discloses a mode in which a gap surrounding effective light-receiving regions of two photodiodes is provided in an interlayer film. Japanese Patent Laid-Open No. 2009-158800 discloses a mode in which a gap along a dividing line between photodiodes is provided in an interlayer film in addition to a gap surrounding effec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/146
CPCH01L27/14609H01L27/14607H01L27/14627H01L27/14629H01L27/14643
Inventor 加藤太朗
Owner CANON KK