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bias control

A technology for biasing and biasing transistors, applied in the field of methods or systems, and bias control, which can solve problems such as the deterioration of the pixel operating range

Active Publication Date: 2017-05-10
TAIWAN SEMICON MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the load associated with the sensor is increased, the settling time is generally increased and the pixel operating range may be degraded

Method used

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Embodiment Construction

[0031] The embodiments or examples shown in the drawings are disclosed below using specific language. It should still be understood that the embodiments or examples are not intended to be limiting. Any modifications and alterations to the disclosed embodiments, and any further applications of the principles disclosed in this document, will generally occur to those skilled in the relevant art.

[0032] It should be understood that in at least some of the figures herein, one or more borders are drawn with different heights, widths, girths, aspect ratios, etc., for example relative to another border for illustrative purposes only and not necessarily to scale. , such as figure 1 Boundary 192 or Boundary 194 . For example, because dashed or dashed lines are used to denote different boundaries, if a dashed and a dashed line are drawn on top of the other, they cannot be distinguished in the diagram, so they are drawn slightly separated from each other, e.g. at least In some drawin...

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Abstract

One or more techniques or systems for bias control are provided herein. In some embodiments, bias control involves biasing one or more columns of pixels of the image sensor. In some embodiments, the associated circuitry includes a reset transistor, a source follower transistor, a first transfer transistor, a first bias transistor, a second bias transistor, and a switch connected to the second bias transistor. In some embodiments, the first bias transistor and the second bias transistor bias the column of pixels at a first time. In some embodiments, the second bias transistor is turned off, thereby removing the second bias at a second time. In this way, the performance of the image transistor is improved at least by enabling faster settling time when the second bias transistor is on and enabling a wider pixel operating range when off.

Description

technical field [0001] The present invention relates generally to the field of semiconductors, and more particularly to methods or systems for bias control. Background technique [0002] Typically, an image sensor, such as a complementary metal-oxide-semiconductor (CMOS) image sensor, includes one or more pixels. For example, a pixel is typically associated with one or more transistors, such as a reset transistor, a source follower (SF) transistor, or a transfer transistor. However, when the load associated with the sensor is increased, the settling time is generally increased and the pixel operating range may be degraded. Contents of the invention [0003] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not an extensive overview of the claimed subject matter, key factors or essential features of the claimed subject matter, nor is it intended to limit the scop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/374H04N5/3745H04N5/378
CPCH04N25/616H04N25/78H04N25/75
Inventor 周国煜赵亦平
Owner TAIWAN SEMICON MFG CO LTD