Image sensor and signal processing method
An image sensor and signal processing technology, which is applied in the field of image sensor and signal processing, can solve problems such as image sensor omission, and achieve the effects of improving light sensitivity, signal-to-noise ratio, and light throughput
Active Publication Date: 2022-07-08
EXPANTRUM OPTOELECTRONICS
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However, when using this structure to collect images, if there are several small-area color graphics on the entire screen, these small-area color graphics have a high probability of falling into the sub-pixel range without color filters, thus missed by the image sensor
When these small-area color graphics are important color signs, such as traffic lights, it will bring very adverse consequences to the observer
Although increasing the number of pixels covering the color filter can reduce the risk of missing important color patterns, it is difficult to achieve a balance between increasing light sensitivity and not missing important color patterns, and it is impossible to meet both requirements
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[0058] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repeated descriptions will be omitted.
[0059] The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solutions of the present invention may also be practiced without one or ...
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The present invention provides an image sensor and a signal processing method. The image sensor includes: a filter layer for selecting the wavelength band of incident light, and a photoelectric conversion layer for converting the light signal transmitted through the filter layer into an electrical signal. The filter layer includes an array of filter regions, at least one of the filter regions is provided with a filter of a specific color, and the filter region provided with the filter has a transmittance of other colors of light equal to The ratio of transmittance to specific color light is 20% to 80%, thereby improving the light sensitivity of the image sensor, and by controlling the number of filter areas for setting the filter, it can avoid missing color graphics.
Description
technical field [0001] The present invention relates to the field of optoelectronic technology, and in particular, to an image sensor and a signal processing method. Background technique [0002] Image sensors are widely used in various digital imaging devices to capture digital images. figure 1 is a plan view of an RGB filter layer of an image sensor in the prior art, figure 2 It is a cross-sectional view of an image sensor in the prior art. Each pixel 10 includes three sub-pixels: a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the three sub-pixels are covered with a red filter 11, a green filter 12, and a blue filter 13, respectively, so that the incident Light is filtered into three primary colors in the filter layer. [0003] like figure 2 As shown, a photoelectric conversion layer 30 is arranged below the filter layer 10, and each pixel 10 includes three photoelectric conversion elements 31, 32, 33 respectively, which pass through the red filter 11,...
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IPC IPC(8): H04N5/225
CPCH04N23/55H04N23/54H01L27/14621H01L27/14685
Inventor黄忠守
OwnerEXPANTRUM OPTOELECTRONICS