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A system and method for detecting crosstalk between pixels

A crosstalk detection, inter-pixel technology, applied in the direction of testing optical performance, etc., can solve the problems of low measurement accuracy and high measurement cost of inter-pixel crosstalk parameters, and achieve the effect of convenient testing and accurate test results.

Active Publication Date: 2017-07-18
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

Therefore, the measurement accuracy of inter-pixel crosstalk parameters is low and the measurement cost is high

Method used

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  • A system and method for detecting crosstalk between pixels
  • A system and method for detecting crosstalk between pixels
  • A system and method for detecting crosstalk between pixels

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[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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Abstract

The invention discloses a system and method for detecting crosstalk between pixels. The inter-pixel crosstalk detection system includes: an overall darkroom (1); a sample stage, which is arranged in the overall darkroom (1) and used for placing a sample of an image sensor to be measured; a light source module (2), which is arranged in the overall darkroom (1) an integral darkroom for generating a laser beam; a focusing device (5) arranged in the integral darkroom for converging the laser beam and projecting it to the image sensor to be measured, so that the size of the light spot irradiated on the image sensor to be measured is large Up to 2 ~ 10um (common image sensor pixel size 2 ~ 10um). The pixel-to-pixel crosstalk detection device and method of the present invention uses an optical adjustment method to make the spot size of the laser beam irradiated on the photosensitive array to be detected is the same as the size of a single pixel, thereby eliminating the need to manufacture a physical shading plate with micro-scale holes, reducing the need for The manufacturing cost is reduced and the detection accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of photoelectric image sensors, in particular to a system and method for detecting crosstalk between pixels. Background technique [0002] The inter-pixel crosstalk (Cross Talk) of the photoelectric image sensor is an important technical parameter index of the photoelectric image sensor, which has a significant impact on the imaging performance. [0003] Theoretically, if the incident light spot is small enough, it will only project and cover a single pixel of the photosensitive array of the photoelectric image sensor (such as figure 1 In the middle pixel), the middle pixel generates an electrical signal after receiving light. The pixels around the middle pixel (such as figure 1 The peripheral pixels in ) are not irradiated by light waves, theoretically there should be no signal output. But in fact, due to many factors such as the carrier diffusion effect, other peripheral pixels adjacent to the middle pi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
Inventor 秦琦吴南健
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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