Teledyne Technologies. has been granted a patent for an imaging device featuring a substrate with a pinned photodiode. The device includes two distinct circuitry paths for charge measurement, each producing signals with different conversion gains, allowing for both non-destructive and destructive charge measurement. GlobalData’s report on Teledyne Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Teledyne Technologies, Photovoltaic drones was a key innovation area identified from patents. Teledyne Technologies's grant share as of July 2024 was 67%. Grant share is based on the ratio of number of grants to total number of patents.
Imaging device with dual charge measurement paths and gains
The patent US12068353B2 describes an innovative imaging device that incorporates a substrate and a pinned photodiode, which generates a charge in response to incident radiation. The device features two distinct circuits for measuring this charge: a first circuit that non-destructively produces a signal representative of the charge and a second circuit that destructively generates a different signal. The first circuit includes a sense gate electrode that capacitively couples to the substrate, while the second circuit is designed to measure voltage changes at a sense node receiving charge from the pinned photodiode. Notably, the first and second circuits exhibit different conversion gains, with the second conversion gain typically being greater than the first, allowing for a conversion gain ratio that can range from 2 to 20.
Additionally, the imaging device can be configured with an array of pinned photodiodes, where the first and second circuits can either be common to multiple photodiodes or dedicated to a single one. The design allows for the first signal to be prioritized, with the second signal being discarded if the first exceeds a predetermined threshold. The operational method of the device involves receiving radiation, generating a charge, and producing both signals through a common readout circuit, which enhances the efficiency and functionality of the imaging process. This dual-path measurement approach offers flexibility in signal processing, catering to various imaging applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
