OPTICAL SENSOR AND TIME OF FLIGHT-BASED DISTANCE MEASUREMENT SYSTEM

OPTICAL SENSOR AND TIME OF FLIGHT-BASED DISTANCE MEASUREMENT SYSTEM

This application discloses a light sensor (103, 300) and a related time-of-flight distance measuring system (100). The light sensor (103, 300) includes a semiconductor substrate (302), having a first surface (302a) and a second surface (302b); a photodiode (PD), disposed in the semiconductor substra...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: YANG, Meng-ta
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:This application discloses a light sensor (103, 300) and a related time-of-flight distance measuring system (100). The light sensor (103, 300) includes a semiconductor substrate (302), having a first surface (302a) and a second surface (302b); a photodiode (PD), disposed in the semiconductor substrate (302) and adjacent to the first surface (302a), wherein the photodiode (PD) is configured to sense light to generate charges; a first floating diffusion region (FDNI), disposed in the semiconductor substrate (302) and adjacent to the first surface (302a), and configured to collect charges during a sampling operation; a gate (D1), disposed on the semiconductor substrate (302), and configured to selectively control the charges to enter the first floating diffusion region (FDNI); and PIN diode (304), disposed on the photodiode (PD), wherein the PIN diode (304) at least partially overlaps with the photodiode (PD), when viewed from a top view.