# US 2021/0243413 A1 · Pixel array reducing loss of image information and image sensor including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243413 A1 - Document ID: US20210243413A1 - Status: Published application - Kind: A1 - Application number: 17/080,892 - Filed: 2020-10-27 - Published: 2021-08-05 - Earliest claimed: 2020-02-04 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: SOYOUN PARK; CHANGSOO PARK - Web page: https://patentgrep.com/patent/US20210243413A1 ## CPC - H04N 23/84: for processing colour signals - H04N 25/134: {based on three different wavelength filter elements} - H04N 23/843: {Demosaicing, e.g. interpolating colour pixel values} - H04N 2209/046: Colour interpolation to calculate the missing colour values - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A pixel array including; color filter array (CFA) cells, each respectively including CFA blocks, each CFA block including color pixels, and the color pixels include a sub-block. The sub-block includes at least one first color pixel sensing a first color, at least one second color pixel sensing a second color different from the first color, and at least one third color pixel sensing a third color different from the first color and the second color. ## Claims ### Claim 1 A pixel array comprising: color filter array (CFA) cells, each respectively including CFA blocks, each CFA block including color pixels, and the color pixels include a sub-block, wherein the sub-block includes at least one first color pixel sensing a first color, at least one second color pixel sensing a second color different from the first color, and at least one third color pixel sensing a third color different from the first color and the second color. ### Claim 2 (depends on 1) The pixel array of claim 1, wherein the sub-block includes a 2-by-2 arrangement of color pixels including one first color pixel, one second color pixel and two third color pixels. ### Claim 3 (depends on 2) The pixel array of claim 2, wherein the sub-block in each of the CFA blocks has a same color pattern. ### Claim 4 (depends on 3) The pixel array of claim 3, wherein the first color is red, the second color is blue and the third color is green. ### Claim 5 (depends on 4) The pixel array of claim 4, wherein the sub-block includes a green pixel disposed at an upper left position, a blue pixel disposed at an upper right position, a red pixel disposed at a lower left position and a green pixel disposed at a lower right position. ### Claim 6 (depends on 4) The pixel array of claim 4, wherein the sub-block includes a green pixel disposed at an upper left position, a red pixel disposed at an upper right position, a blue pixel disposed at a lower left position and a green pixel disposed at a lower right position. ### Claim 7 (depends on 4) The pixel array of claim 4, wherein the sub-block includes a blue pixel disposed at an upper left position, a green pixel disposed at an upper right position, a green pixel disposed at a lower left position and a red pixel disposed at a lower right position. ### Claim 8 (depends on 4) The pixel array of claim 4, wherein the sub-block includes a red pixel disposed at an upper left position, a green pixel disposed at an upper right position, a green pixel disposed at a lower left position and a blue pixel disposed at a lower right position. ### Claim 9 (depends on 1) The pixel array of claim 1, wherein the CFA blocks include a first CFA block and a second CFA block in a first row-wise arrangement, a third CFA block and a fourth CFA block in a second row-wise arrangement, the first CFA block and the third CFA block in a first column-wise arrangement, and the second CFA block and the fourth CFA block in a second column-wise arrangement. ### Claim 10 (depends on 9) The pixel array of claim 9 wherein the first color is red, the second color is blue and the third color is green. ### Claim 11 (depends on 10) The pixel array of claim 10, wherein one of the CFA blocks is a red CFA block predominantly including red pixels, one other of the CFA blocks is a blue CFA block predominantly including blue pixels, and two others of the CFA blocks are respectively green CFA blocks predominantly including green pixels. ### Claim 12 (depends on 11) The pixel array of claim 11, wherein the red CFA block predominantly includes red pixels in a boundary region of the red CFA block, the blue CFA block predominantly includes blue pixels in a boundary region of the blue CFA block, and the green CFA blocks respectively predominantly includes green pixels in boundary regions of the green CFA blocks. ### Claim 13 An image sensor comprising: a pixel array including color filter array (CFA) cells, each CFA cell including CFA blocks, each CFA block including color pixels, and color pixels of each CFA block including a sub-block, wherein the sub-block includes at least one first color pixel sensing a first color, at least one second color pixel sensing a second color different from the first color, and at least one third color pixel sensing a third color different from the first color and the second color; a row driver configured to generate control signals that control the generation of pixel signals by the color pixels of the pixel array; a read circuit configured to generate pixel data from the pixel signals; and a controller configured to control the row driver and the read circuit. ### Claim 14 (depends on 13) The image sensor of claim 13, further comprising a re-mosaic processor configured to perform a re-mosaic operation in relation to the pixel data to convert a color pattern of at least one of the CFA cells into a Bayer pattern. ### Claim 15 (depends on 14) The image sensor of claim 14, wherein a color pattern of the sub-block is the same as a color pattern of at least a portion of the Bayer pattern. ### Claim 16 (depends on 13) The image sensor of claim 13, wherein sub-blocks included in each of the CFA block are the same and include a 2-by-2 arrangement of color pixels including one red pixel, one blue pixel and two green pixels. ### Claim 17 (depends on 13) The image sensor of claim 13, wherein the CFA blocks include a first CFA block and a second CFA block in a first row-wise arrangement, a third CFA block and a fourth CFA block in a second row-wise arrangement, the first CFA block and the third CFA block in a first column-wise arrangement, and the second CFA block and the fourth CFA block in a second column-wise arrangement. ### Claim 18 (depends on 17) The image sensor of claim 17, wherein one of the CFA blocks is a red CFA block that predominantly includes red pixels, one other of the CFA blocks is a blue CFA block that predominantly includes blue pixels, and two others of the CFA blocks are respective, green CFA blocks that predominantly include green pixels. ### Claim 19 An image sensor pixel array, comprising: a plurality of color filter array (CFA) cells, each including a 2-by-2 arrangement of CFA blocks, wherein each CFA block includes color pixels having a same color arranged in a boundary region of the CFA block surrounding a sub-block, wherein the sub-block includes at least one first color pixel sensing a first color, at least one second color pixel sensing a second color different from the first color, and at least one third color pixel sensing a third color different from the first color and the second color. ### Claim 20 (depends on 19) The image sensor pixel array of claim 19, wherein the 2-by-2 arrangement of CFA blocks includes a green CFA block, a red CFA block, and a blue CFA block, the green CFA block including twelve green pixels surrounding the sub-block, the red CFA block including twelve red pixels surrounding the sub-block, and the blue CFA block including twelve blue pixels surrounding the sub-block.