Invention Grant
- Patent Title: Self calibrating barrier modulation pixel
-
Application No.: US17818962Application Date: 2022-08-10
-
Publication No.: US12096140B2Publication Date: 2024-09-17
- Inventor: Denver Lloyd , Adi Xhakoni , Scott Johnson
- Applicant: ams Sensors USA Inc. , ams Sensors Belgium BVBA
- Applicant Address: US TX Plano
- Assignee: ams Sensors USA Inc.,ams Sensors Belgium BVBA
- Current Assignee: ams Sensors USA Inc.,ams Sensors Belgium BVBA
- Current Assignee Address: US TX Plano; BE Berchem
- Agency: Slater Matsil, LLP
- Priority: DE 2021120779.7 2021.08.10
- Main IPC: H04N25/59
- IPC: H04N25/59 ; H01L27/146 ; H04N25/531 ; H04N25/583 ; H04N25/585 ; H04N25/62 ; H04N25/75 ; H04N25/778

Abstract:
In an embodiment a pixel arrangement includes a photodetector configured to accumulate charge carriers by converting electromagnetic radiation, a transfer transistor electrically coupled to the photodetector, a diffusion node electrically coupled to the transfer transistor, a reset transistor electrically coupled to the diffusion node and to a pixel supply voltage and a sample-and-hold stage including at least a first capacitor and a second capacitor, an input of the sample-and-hold stage being electrically coupled to the diffusion node via an amplifier, wherein the transfer transistor is configured to be pulsed to different voltage levels for transferring parts of the accumulated charge carriers to the diffusion node, wherein at least the second capacitor is configured to store a low conversion gain signal representing a first part of the accumulated charge carriers, and wherein the first capacitor is configured to store a high conversion gain signal representing a remaining part of the accumulated charge carriers.
Public/Granted literature
- US20230051657A1 SELF CALIBRATING BARRIER MODULATION PIXEL Public/Granted day:2023-02-16
Information query