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Solid-state image sensor

Active Publication Date: 2022-10-06
VISERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a new design for a solid-state image sensor that is more efficient in processing image signals. The design has a symmetrical pattern, which makes it easier to compensate for any distortion in the image. This results in higher quality image data.

Problems solved by technology

However, since the pixels in each unit pattern on the side closest to the light source have different energy from others, when there are phase detection auto focus (PDAF) pixels in each pattern, patterns on opposite sides e.g., left side and right side, or upper side and lower side) need to adopt different and complicated image signal processing (ISP) (signal compensation).

Method used

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  • Solid-state image sensor
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Examples

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Embodiment Construction

[0034]The following disclosure provides many different embodiments, or examples, for implementing different features of the subject matter provided. Specific examples of components and arrangements are described below to simplify the present disclosure. These are, of course, merely examples and are not intended to be limiting. For example, a first feature is formed on a second feature in the description that follows may include embodiments in which the first feature and second feature are formed in direct contact, and may also include embodiments in which additional features may be formed between the first feature and second feature, so that the first feature and second feature may not be in direct contact.

[0035]Furthermore, spatially relative terms, such as “beneath,”“below,”“lower,”“on,”“above,”“upper” and the like, may be used herein for ease of description to describe one element or feature's relationship to other elements or features as illustrated in the figures. The spatially...

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Abstract

A solid-state image sensor having a first region and a second region adjacent to the first region along a first direction is provided. The solid-state image sensor includes a first unit pattern disposed in the first region. The solid-state image sensor also includes a second unit pattern disposed in the second region and corresponding to the first unit pattern. The first unit pattern and the second unit pattern each includes normal pixels and an auto-focus pixel array. The normal pixels and the auto-focus pixel array in the first unit pattern form a first arrangement, the normal pixels and the auto-focus pixel array in the second unit pattern form a second arrangement, and the first arrangement and the second arrangement are symmetric with respect to the first axis of symmetry.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application No. 63 / 169,579, filed on Apr. 1, 2021, the entirety of which is incorporated by reference herein.BACKGROUNDTechnical Field[0002]The embodiments of the present disclosure relate to image sensors, and in particular they relate to solid-state image sensors with a symmetrical patient design.Description of the Related Art[0003]Solid-state image sensors (e.g., complementary metal-oxide semiconductor (CMOS) image sensors) have been widely used in various image-capturing apparatuses such as digital still-image cameras, digital video cameras, and the like. Signal electric charges may be generated according to the amount of light received in the light-sensing portion (e.g., photoelectric conversion element) of the solid-state image sensor. In addition, the signal electric charges generated in the light-sensing portion may be transmitted and amplified, whereby an image signal is obt...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04N5/232
CPCH04N5/232127H01L27/14603H01L27/14605H04N25/704H04N25/131H04N25/133H04N25/134H04N25/136H01L27/14621H04N23/675
Inventor LIN, CHENG-HSUANTU, ZONG-RUCHANG, YU-CHIWU, HAN-LINTSAI, HUNG-JEN
Owner VISERA TECH CO LTD