Single-chip image sensor having visible light and UV-light detection function and detection method thereof

A technology of image sensor and photodetector, which is applied in the field of image sensor chip design and solid-state integrated circuit design, and can solve problems such as the difficulty of integrating visible light and UV detection capabilities

Inactive Publication Date: 2016-03-23
CISTA SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is, it is difficult to integrate visible light and UV detection capabilities into a single chip at the same time

Method used

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  • Single-chip image sensor having visible light and UV-light detection function and detection method thereof
  • Single-chip image sensor having visible light and UV-light detection function and detection method thereof
  • Single-chip image sensor having visible light and UV-light detection function and detection method thereof

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Embodiment Construction

[0027] figure 1 A structure integrating a visible light sensor and a UV sensor into a single chip is described, and the structure includes a visible light sensor 100 and a UV sensor 110 disposed in a single chip 120 .

[0028] figure 2 It is a cross-sectional structure of an embodiment of the present invention. The single chip further includes a photodetector array 200, a color filter array 210 for obtaining a color or monochromatic visible light image is disposed on the photodetector array, and a transparent encapsulation layer 220 is further disposed on the color filter Above that, the encapsulation layer is usually made of thin glass or plastic.

[0029] Further, the encapsulation layer 220 is provided with a small-sized UV bandpass filter layer 230, the UV bandpass filter layer 230 includes but not limited to an infrared and visible light color filter layer 240 and a UV coating 250, Wherein: the infrared and visible light color filter layer 240 is a thin layer made of ...

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Abstract

A single-chip image sensor having a visible light and UV-light detection function and a detection method thereof are provided. The single-chip image sensor comprises a visible light sensor arranged on a single chip and a UV sensor arranged in a UV sensing area. The single-chip image sensor can shot images in a visible light environment, and can detect UV light information therein in a real-time or time-sharing way.

Description

technical field [0001] The invention is a technology in the field of solid-state integrated circuit design, and specifically relates to the field of image sensor chip design. Background technique [0002] Usually visible light sensors are used to capture images and videos in visible light environments. Ultraviolet (UV) sensors are generally used to detect ultraviolet rays other than visible light. Both types of sensors are widely used. At present, most commercial UV sensors are modules that are set separately, so traditional visible light sensors cannot realize ultraviolet detection in the same chip. There are also dedicated UV image sensors, but they can only capture full UV images and cannot obtain visible light images. Typically, specific color filters or film coatings are placed on the silicon-based image sensor to make it sensitive to a certain band of the spectrum. With visible light sensors, only visible light passes through the filter and reaches the sensor, whil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146G01J1/42
CPCH01L27/14621H01L27/14625H01L27/14627H04N2209/047H01L27/14685H01L27/1462H04N25/63
Inventor 不公告发明人
Owner CISTA SYST
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