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Image-sensor structures

An image sensor and micro-lens technology, applied in semiconductor devices, electric solid-state devices, radiation control devices, etc., can solve the problems of loss of incident light, poor signal acquisition, etc.

Active Publication Date: 2018-01-30
VISERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two half-shaded green pixels lose half of the incident light, less than a standard green pixel, resulting in poorer signal acquisition

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0049] see figure 1 , according to an embodiment of the present disclosure, an image-sensor structure (image-sensor structure) 10 is provided. figure 1 is a schematic cross-sectional view of the image sensor structure 10 .

[0050]The image sensor structure 10 includes a substrate 12; a plurality of photoelectric conversion units 14 formed in the substrate 12; a plurality of color filter patterns 16 formed on the substrate 12 and the photoelectric conversion unit 14; and a plurality of microlenses 18 formed in the substrate 12. On the color filter pattern 16. In some embodiments, top views of different pixel units (19, 19') of the image sensor structure 10, the arrangement of different color filter patterns 16 and the appearance of the microlens 18 are disclosed in FIGS. 2A and 3A.

[0051] In one embodiment, see Figure 2A , in the pixel unit 19 , the color filter pattern 16 is divided into a first unit 20 , a second unit 26 , a third unit 32 , and a fourth unit 38 . The ...

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Abstract

An image-sensor structure is provided. The image-sensor structure includes a plurality of color filter patterns divided into a first unit including one green filter, a second unit including one greenfilter, a third unit including one blue filter, and a fourth unit including one red filter, wherein the first unit is adjacent to the second unit; and a plurality of microlenses formed above the colorfilter patterns, wherein the microlenses are divided into a first microlens unit having one microlens above the one green filter of the first unit and the one green filter of the second unit, a second microlens unit above the one blue filter of the third unit, and a third microlens unit above the one red filter of the fourth unit.

Description

technical field [0001] The present disclosure relates to an image sensor structure, and more particularly to an image sensor structure with a shared microlens. Background technique [0002] An image sensor is a semiconductor device that converts light images into electrical signals. Image sensors are generally classified into Charge Coupled Device (CCD) and Complementary Metal Oxide Semiconductor (CMOS) image sensors. Among the above image sensors, the CMOS image sensor includes a photodiode for detecting incident light and converting it into an electrical signal, and a logic circuit for transmitting and processing the electrical signal. [0003] In recent years, phase detection autofocus (PDAF) technology has been introduced into electronic products such as digital single-lens reflex cameras (DSLR), digital still cameras (DSC) and smartphone cameras. The principle is to provide a pair of semi-shielding green pixels on which microlenses are mounted. The signal difference ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146H04N23/12
CPCH01L27/14605H01L27/14627H01L27/14643H01L27/14621
Inventor 谢锦全王唯科
Owner VISERA TECH CO LTD