Pixel isolation elements, devices and associated methods

US10224359B2 · kind B2 · utility

Assignee

• SIONYX, LLC · US

Inventors

• Martin U. Pralle · Wayland, US
• Jeffrey McKee · Meridian, US
• Jason W. Sickler · Arlington, US

Key dates

• Filing date: Jul 21, 2016
• Grant date: Mar 5, 2019
• Expiry date: Jul 21, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/8067

Abstract

Light trapping pixels, devices incorporating such pixels, and various associated methods are provided. In one aspect, for example, a light trapping pixel device can include a light sensitive pixel having a light incident surface, a backside surface opposite the light incident surface, and a peripheral sidewall disposed into at least a portion of the pixel and extending at least substantially around the pixel periphery. The pixel can also include a backside light trapping material substantially covering the backside surface and a peripheral light trapping material substantially covering the peripheral sidewall. The light contacting the backside light trapping material or the peripheral light trapping material is thus reflected back toward the pixel.