Color filter array and image receiving method thereof

• US 9,608,022 B2
• Filed: 11/24/2014
• Issued: 03/28/2017
• Est. Priority Date: 09/03/2014
• Status: Active Grant

• Current Assignee: Novatek Microelectronics Corporation (Novatek Microelectronics Corp Limited)
• Original Assignee: Novatek Microelectronics Corporation (Novatek Microelectronics Corp Limited)
• Inventors: Chen, I-Hsiu, Wang, Shu-Fang, Hsiao, Po-Jen
• Primary Examiner(s): LUU, THANH X
• Application Number:
  US14/551,100
• Publication Number:
  US 20160064434A1
• Time in Patent Office: 855 Days
• Field of Search: 250/226
• US Class Current: 1/1
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: H01L 27/14621 Colour filter arrangements
• CPC Class Codes: H04N 23/11 for generating image signals from visible and infrared light wavelengths
• CPC Class Codes: H04N 23/12 with one sensor only

Abstract

A color filter array, for an image sensing device, includes a plurality of filter patterns. Each filter pattern includes at least one first filter, corresponding to a first wavelength range of a first color; at least one second filter, corresponding to a second wavelength range of a second color; at least one third filter, corresponding to a third wavelength range of a third color; at least one fourth filter, corresponding to a first infrared wavelength range, wherein the first infrared wavelength range is an intersection of the first wavelength range and the second wavelength range; and at least one fifth filter, corresponding to a second infrared wavelength range, wherein the second infrared wavelength range is an intersection of the first wavelength range and the third wavelength range.

Claims

1. A color filter array, for an image sensing device, the color filter array comprising a plurality of filter patterns, wherein each filter pattern comprises:

at least one first filter, corresponding to a first wavelength range of a first color;

at least one second filter, corresponding to a second wavelength range of a second color;

at least one third filter, corresponding to a third wavelength range of a third color;

at least one fourth filter, corresponding to a first infrared wavelength range, wherein the first infrared wavelength range is an intersection of the first wavelength range and the second wavelength range; and

at least one fifth filter, corresponding to a second infrared wavelength range, wherein the second infrared wavelength range is an intersection of the first wavelength range and the third wavelength range;

wherein the at least one second filter comprises the second filter located at a first row and a first column and the second filter located at a second row adjacent to the first row and the first column;

the at least one fourth filter comprises the fourth filter located at the first row and a second column adjacent to the first column;

the at least one fifth filter comprises the fifth filter located at the second row and the second column;

the at least one third filter comprises the third filter located at the first row and a third column adjacent to the second column; and

the at least one first filter comprises the first filter located at the second row and the third column.

2. The color filter array of claim 1, wherein the first color is red, the second color is green and the third color is blue.

3. The color filter array of claim 1, wherein each of the at least one fourth filter is realized by the first filter and the second filter.

4. The color filter array of claim 1, wherein each of the at least one fifth filter is realized by the first filter and the third filter.

5. An image receiving method, for an image sensing device, the image receiving method comprising:

receiving first image data of a first wavelength range corresponding to a first color;

receiving second image data of a second wavelength range corresponding to a second color;

receiving third image data of a third wavelength range corresponding to a third color;

receiving fourth image data of a first infrared range, wherein the first infrared range is an intersection of the first wavelength range and the second wavelength range;

adjusting the second image data according to the fourth image data;

receiving fifth image data of a second infrared range, wherein the second infrared range is an intersection of the first wavelength range and the third wavelength range; and

adjusting the first image data and the third image data according to the fifth image data;

wherein the first color is red, the second color is green and the third color is blue.

6. A color filter array, for an image sensing device, the color filter array comprising a plurality of filter patterns, wherein each filter pattern comprises:

at least one first filter, corresponding to a first wavelength range of a first color;

at least one second filter, corresponding to a second wavelength range of a second color;

at least one third filter, corresponding to a third wavelength range of a third color;

at least one fourth filter, corresponding to a first infrared wavelength range, wherein the first infrared wavelength range is an intersection of the first wavelength range and the second wavelength range; and

at least one fifth filter, corresponding to a second infrared wavelength range, wherein the second infrared wavelength range is an intersection of the first wavelength range and the third wavelength range;

wherein the at least one second filter comprises the second filter located at a first row and a first column and the second filter located at a second row adjacent to the first row and a third column;

the at least one fourth filter comprises the fourth filter located at the first row and a second column between the first column and the third column;

the at least one fifth filter comprises the fifth filter located at the second row and the first column;

the at least one third filter comprises the third filter located at the first row and the third column; and

the at least one first filter comprises the first filter located at the second row and the second column.

7. A color filter array, for an image sensing device, the color filter array comprising a plurality of filter patterns, wherein each filter pattern comprises:

at least one first filter, corresponding to a first wavelength range of a first color;

at least one second filter, corresponding to a second wavelength range of a second color;

at least one third filter, corresponding to a third wavelength range of a third color;

at least one fourth filter, corresponding to a first infrared wavelength range, wherein the first infrared wavelength range is an intersection of the first wavelength range and the second wavelength range; and

at least one fifth filter, corresponding to a second infrared wavelength range, wherein the second infrared wavelength range is an intersection of the first wavelength range and the third wavelength range;

wherein the at least one second filter comprises the second filter located at a first row and a first column, the second filter located at a second row adjacent to the first row and the first column, the second filter located at a third row adjacent to the second row and the first column, and the second filter located at a fourth row adjacent to the third row and the first column;

the at least one fourth filter comprises the fourth filter located at the first row and a second column adjacent to the first column;

the at least one fifth filter comprises the fifth filter located at the third row and the second column;

the at least one third filter comprises the third filter located at the second row and the second column; and

the at least one first filter comprises the first filter located at the fourth row and the second column.

8. A color filter array, for an image sensing device, the color filter array comprising a plurality of filter patterns, wherein each filter pattern comprises:

at least one first filter, corresponding to a first wavelength range of a first color;

at least one second filter, corresponding to a second wavelength range of a second color;

at least one third filter, corresponding to a third wavelength range of a third color;

at least one fourth filter, corresponding to a first infrared wavelength range, wherein the first infrared wavelength range is an intersection of the first wavelength range and the second wavelength range; and

at least one fifth filter, corresponding to a second infrared wavelength range, wherein the second infrared wavelength range is an intersection of the first wavelength range and the third wavelength range;

wherein the at least one second filter comprises the second filter located at a first row and a first column, the second filter located at a second row adjacent to the first row and the first column, the second filter located at a third row adjacent to the second row and the first column, and the second filter located at a fourth row adjacent to the third row and the first column;

the at least one fourth filter comprises the fourth filter located at the second row and a second column adjacent to the first column;

the at least one fifth filter comprises the fifth filter located at the first row and the second column;

the at least one third filter comprises the third filter locate at the third row and the second column; and

the first filter comprises the first filter located at the fourth row and the second column.

9. A color filter array, for an image sensing device, the color filter array comprising a plurality of filter patterns, wherein each filter pattern comprises:

at least one first filter, corresponding to a first wavelength range of a first color;

at least one second filter, corresponding to a second wavelength range of a second color;

at least one third filter, corresponding to a third wavelength range of a third color;

at least one fourth filter, corresponding to a first infrared wavelength range, wherein the first infrared wavelength range is an intersection of the first wavelength range and the second wavelength range; and

at least one fifth filter, corresponding to a second infrared wavelength range, wherein the second infrared wavelength range is an intersection of the first wavelength range and the third wavelength range;

wherein the at least one second filter comprises the second filter located at a first row and a first column, the second filter located at a second row adjacent to the first row and a second column adjacent to the first column, the second filter locate at the first row and a third column adjacent to the second column, and the second filter located at the second row and a fourth column adjacent to the third column;

the at least one fourth filter comprises the fourth filter locate at the second row and the first column;

the at least one fifth filter comprises the fifth filter located at the first row and the second column;

the at least one third filter comprises the third filter located at the first row and the fourth column; and

the at least one first filter comprises the first filter located at the second row and the third column.

10. A color filter array, for an image sensing device, the color filter array comprising a plurality of filter patterns, wherein each filter pattern comprises:

at least one first filter, corresponding to a first wavelength range of a first color;

at least one second filter, corresponding to a second wavelength range of a second color;

at least one third filter, corresponding to a third wavelength range of a third color;

at least one fourth filter, corresponding to a first infrared wavelength range, wherein the first infrared wavelength range is an intersection of the first wavelength range and the second wavelength range; and

at least one fifth filter, corresponding to a second infrared wavelength range, wherein the second infrared wavelength range is an intersection of the first wavelength range and the third wavelength range;

wherein the at least one second filter comprises the second filter located at a first row and a first column, the second filter located at a second row adjacent to the first row and a second column adjacent to the first column, the second filter located at the first row and a third column adjacent to the second column, and the second filter located at the second row and a fourth column adjacent to the third column;

the at least one fourth filter comprises the fourth filter located at the first row and the second column;

the at least one fifth filter comprises the fifth filter located at the first row and the fourth column;

the at least one third filter comprises the third filter located at the second row and the first column; and

the at least one first filter comprises the first filter located at the second row and the third column.