Optoelecronic device with polarizing mask structure

A method, comprising:

• forming a light wave filter structure having a transmissivity that allows visible light waves and near infrared light waves to pass through the light wave filter structure;
• forming a visible light photodiode in a first device region below the light wave filter structure;
• forming a near infrared light photodiode in a second device region below the visible light photodiode;
• forming a polarizing mask structure in the second device region between the visible light photodiode and the near infrared light photodiode;
• forming a first pass-through region in the first device region that allow light waves to pass from the visible light photodiode to the second device region,
• forming a second pass-through region in the second device region that allow the light waves to pass through the polarizing mask structure to the near infrared light photodiode;
• and
• wherein the first pass-through region is vertically aligning the second pass-through region and the polarizing mask structure.

A method, comprising:

• forming a light wave filter structure;
• forming a first photodiode in a first device region below the light wave filter structure;
• forming a second photodiode in a second device region below the first photodiode;
• forming a polarizing mask structure in the second device region between the first photodiode and the second photodiode,
• forming a first pass-through region in the first device region that allow light waves to pass from the first photodiode to the second device region,
• forming a second pass-through region in the second device region that allow the light waves to pass through the polarizing mask structure to the second photodiode;
• wherein the first pass-through region is vertically aligning the second pass-through region and the polarizing mask structure;
• and
• wherein the first photodiode and the second photodiode are near infrared photodiodes, or the first photodiode and the second photodiode are visible light photodiodes.