Image sensing device

An image sensing device, comprising:

• a pixel array including a plurality of unit pixels,
• wherein each of the unit pixels comprises:
• a first sub-pixel comprising a green color filter;
• a second sub-pixel comprising a red color filter;
• and
• a third sub-pixel comprising a blue color filter,
• wherein a first isolation region is formed in an edge region of the first sub-pixel,
• wherein a fourth isolation region is formed in an edge region of the second sub-pixel,
• wherein a second isolation region is formed from the first isolation region toward a central portion of the first sub-pixel,
• wherein a fifth isolation region is formed to protrude from the fourth isolation region in a direction perpendicular to a direction in which the second isolation region is formed,
• wherein the second isolation region comprises:
• a first inner isolation region protruding from one region of the first isolation region toward the central portion of the first sub-pixel;
• and
• a second inner isolation region aligned with the first inner isolation region and protruding from another region of the first isolation region toward the central portion of the first sub-pixel,
• wherein the fifth isolation region comprises:
• a third inner isolation region protruding from one region of the fourth isolation region toward a central portion of the second sub-pixel;
• and
• a fourth inner isolation region aligned with the third inner isolation region and protruding from another region of the fourth isolation region toward the central portion of the second sub-pixel,
• wherein a third isolation region is formed in a direction orthogonal to a direction in which a first inner isolation region and the second inner isolation region are arranged;
• and
• wherein a sixth isolation region is formed in a direction orthogonal to a direction in which the third inner isolation region and the fourth inner isolation region are arranged.