Image sensor structure

An image sensor structure, comprising:

• a substrate;
• first pixel structures, wherein each of the first pixel structures comprises a first light sensing device and a light pipe structure, the first light sensing device is disposed in the substrate, and the light pipe structure is disposed directly above the first light sensing device;
• and
• second pixel structures, wherein each of the second pixel structures comprises a second light sensing device, the second light sensing device is disposed in the substrate, there is no light pipe structure directly above the second light sensing device, a luminous flux of each of the second pixel structures is different from a luminous flux of each of the first pixel structures,
• the first pixel structures and the second pixel structures constitute a pixel array, the second pixel structures arranging in a cross shape or an L-shape are disposed adjacent to a corner of the pixel array, and one of the first pixel structures is addressed by using the second pixel structures as a reference point.

An image sensor structure, comprising:

• a substrate comprising a first side and a second side opposite to each other,
• first pixel structures, wherein each of the first pixel structures comprises a first light sensing device, and the first light sensing device is disposed in the substrate and is adjacent to the first side of the substrate;
• second pixel structures, wherein each of the second pixel structures comprises a second light sensing device, and the second light sensing device is disposed in the substrate and is adjacent to the first side of the substrate;
• a dielectric layer disposed on the second side of the substrate;
• and
• a light shielding layer disposed in the dielectric layer and having a first opening and a second opening, wherein
• the first opening is located directly above the first light sensing device and passes through the light shielding layer,
• the first opening has a first minimum width,
• the second opening is located directly above the second light sensing device and passes through the light shielding layer,
• the second opening has a second minimum width,
• the second minimum width of the second opening is smaller than the first minimum width of the first opening,
• a luminous flux of each of the second pixel structures is different from a luminous flux of each of the first pixel structures,
• the first pixel structures and the second pixel structures constitute a pixel array, the second pixel structures arranging in a cross shape or an L-shape are disposed adjacent to a corner of the pixel array, and one of the first pixel structures is addressed by using the second pixel structures as a reference point.