Image sensors and image capturing apparatus including the same

摘要

Provided are an image sensor and an image capturing apparatus including the image sensor. The image sensor includes a pixel array including: multiple sensing pixels outputting image signals respectively corresponding to intensities of incident light; and at least one pair of focusing pixels that are adjacent each other, and each outputting a phase difference of the incident light as a focusing signal; wherein each focusing pixel includes: a semiconductor layer including a photodetecting device accumulating electric charges generated according to absorbed light from among the incident light; a wiring layer formed on a first surface of the semiconductor layer and including wirings; a planarization layer having a first surface on a second surface of the semiconductor layer; a shielding layer formed in the planarization layer to block some of the incident light to be incident to the photodetecting device; and a color filter layer and a micro lens layer.

主权项

1. An image sensor comprising:
a pixel array comprising:
a plurality of sensing pixels configured to output image signals respectively corresponding to intensities of incident light; andat least two focusing pixels that are adjacent one another, and each outputting a phase difference of the incident light as a focusing signal; wherein each of the at least two focusing pixels comprises: a semiconductor layer including a photodetecting device accumulating electric charges generated according to absorbed light from among the incident light; a wiring layer on a first surface of the semiconductor layer and including wirings; a planarization layer on a second surface of the semiconductor layer and having a first surface; a shielding layer in the planarization layer to block a portion of the incident light to be received by the photodetecting device; and a color filter layer and a micro lens layer on a second surface of the planarization layer that is opposite the first surface of the planarization layer, wherein the color filter layer is configured to selectively transmit the incident light according to a wavelength of the incident light and the micro lens layer is configured to selectively focus the incident light onto the photodetecting device, and wherein the shielding layer is in the planarization layer in contact with the first surface of the planarization layer or the second surface of the planarization layer.