US 12243948

Here is a concise summary of US patent 12243948:

Title: Microstructure enhanced absorption photosensitive devices

Assignee: W& W Sens Devices (Current Assignee), W&w Sens Devices Inc (Original Assignee)

Inventors: Shih-Yuan Wang, Shih-Ping Wang

Filing Date: 2024-09-03

Issue Date: 2025-03-04 (Application granted on this date)

Abstract (Synthesized from provided definitions and descriptive sections):
The present invention generally relates to photosensitive devices, and more particularly, to those having microstructure enhanced absorption characteristics. A photodetector with microstructure-enhanced photoabsorption includes a cathode region, an anode region, and reverse biasing circuitry. It also features a microstructure-enhanced photon absorbing semiconductor region designed to absorb photons from a source signal. This absorbing region contains a plurality of microstructures (such as pillars, holes, and/or voids) that are dimensioned and positioned to increase photon absorption across a range of wavelengths, including the source signal's wavelength. These microstructures enhance absorption by forming an absorbing mode high contrast grating, utilizing resonance, scattering, near-field, sub-wavelength, and/or interference effects. The device can be formed from materials such as silicon, germanium, or III-V compounds, and is configured to achieve high data bandwidths and quantum efficiencies, particularly for optical communication wavelengths where traditional silicon devices are less effective. The microstructures also effectively reduce the capacitance of the photodetector compared to devices without such features, contributing to higher operating speeds.

Independent Claims:
The full text provided for US12243948 does not explicitly include a "Claims" section. Therefore, I cannot provide a plain-language overview of each independent claim from the authoritative patent text provided.

CAFC 2026 Dockets:
A search of CAFC 2026 dockets for patent number 12243948 did not return any relevant results for this specific patent. The search result found a case related to US Pat. No. 7,679,637, not 12243948.