Image sensor having pixels with increased optical crosstalk and use thereof

An image sensor and pixel technology, applied in the field of optical crosstalk, can solve problems such as color confusion

Active Publication Date: 2017-09-19
OMNIVISION TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Image sensors with transparent pixels are more prone to color aliasing because transparent pixels do not generate any color information of their own other than light intensity

Method used

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  • Image sensor having pixels with increased optical crosstalk and use thereof
  • Image sensor having pixels with increased optical crosstalk and use thereof
  • Image sensor having pixels with increased optical crosstalk and use thereof

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Embodiment Construction

[0024] Embodiments of image sensors having pixels with increased optical crosstalk are described herein. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. One skilled in the relevant art will recognize, however, that the techniques described herein may be practiced without one or more of the specific details or with the aid of other methods, components, materials, etc. In other instances, well-known structures, materials, or operations have not been shown or described in detail to avoid obscuring certain aspects.

[0025] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are ...

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Abstract

The present application relates to an image sensor having pixels with increased optical crosstalk and uses thereof. An image sensor includes first pixels and second pixels. The first pixel includes a first photosensitive element, a first filter and a first microlens. The second pixel is disposed adjacent to the first pixel and includes a second photosensitive element, a second filter, and a second microlens. The first pixel is configured to direct at least some of the light received at the first microlens to the second photosensitive element of the second pixel to increase optical crosstalk so as to reduce color aliasing.

Description

[0001] Cross-references to related applications [0002] This application claims the benefit of US Provisional Application No. 61 / 789,013, filed March 15, 2013. US Provisional Application No. 61 / 789,013 is hereby incorporated by reference. technical field [0003] The present invention relates generally to image sensors, and in particular, but not exclusively, to optical crosstalk in CMOS image sensors. Background technique [0004] Image sensors have become ubiquitous. It is widely used in digital still cameras, cellular phones, security cameras, as well as in medical, automotive and other applications. The technology used to fabricate image sensors, and in particular complementary metal-oxide-semiconductor ("CMOS") image sensors, has continued to advance rapidly. For example, the need for higher resolution and lower power consumption has prompted further miniaturization and integration of these image sensors. [0005] Conventional CMOS image sensors use an array of co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/146
Inventor 雷蒙德·吴
Owner OMNIVISION TECH INC
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