Image sensor with pixels having increased optical crosstalk and applications thereof

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

Active Publication Date: 2014-09-17
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 with pixels having increased optical crosstalk and applications thereof
  • Image sensor with pixels having increased optical crosstalk and applications thereof
  • Image sensor with pixels having increased optical crosstalk and applications 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 other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not 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 phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily al...

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Abstract

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

Description

[0001] Related Application Cross Reference [0002] This application claims the benefit of U.S. 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] This disclosure 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 complementary metal-oxide-semiconductor ("CMOS") image sensors in particular, has continued to evolve rapidly. For example, demands for higher resolution and lower power consumption have driven further miniaturization and integration of these image sensors. [0005] Conventional CMOS image sensors use an array of color filters,...

Claims

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Application Information

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IPC IPC(8): H01L27/146
Inventor 雷蒙德·吴
Owner OMNIVISION TECH INC
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