Optical sensor array substrate and optical fingerprint reader
US12125310B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 18, 2023 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Oct 18, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/811
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical sensor array substrate and an optical fingerprint reader are provided. The optical sensor array substrate includes a substrate including a detection area which includes a plurality of photosensitive pixels. Photosensitive pixel includes: a TFT arranged on the substrate; a storage capacitor arranged on the substrate and having a first capacitor plate, and a second capacitor plate electrically connected to the source or drain of the TFT; a photosensitive element, having one end electrically connected to the second capacitor plate; a first electrode layer electrically connected to another end of the photosensitive element. On the substrate, an orthographic projection of the second capacitor plate at least partially overlaps with that of the first electrode layer, and the first capacitor plate is located in the same layer and has the same material as the gate of the TFT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.