EFFICIENCY-LADDERED CROPPED EXIT PUPIL EXPANDER FOR COMPACT DIFRACTIVE WAVEGUIDES

    公开(公告)号:US20250093660A1

    公开(公告)日:2025-03-20

    申请号:US18885214

    申请日:2024-09-13

    Abstract: Embodiments of the present disclosure relate to devices and methods related to relate to augmented reality waveguide combiners. The device includes a waveguide combiner, the waveguide combiner includes an input coupler operable to receive a light and in-couple the light into the waveguide combiner, an exit pupil expander (EPE) adjacent to a grating of the input coupler, the EPE having a laddered structure, the laddered structure comprising at least one band, the at least one band comprising a plurality of grating structures, at least one grating structure of the plurality of grating structures has a varying depth, a varying duty cycle, or a varying pitch that is different than a depth, a duty cycle, or pitch than an adjacent grating structure of the plurality of grating structures, and an output coupler operable to receive the light from the EPE and transmit the light onto a user field of view (FOV).

    Method for depositing layers directly adjacent uncovered vias or contact holes

    公开(公告)号:US12255067B2

    公开(公告)日:2025-03-18

    申请号:US17751609

    申请日:2022-05-23

    Abstract: Disclosed are approaches for forming semiconductor device layers. One method may include forming a plurality of openings in a semiconductor structure, and forming a film layer atop the semiconductor structure by delivering a material at a non-zero angle relative to a normal extending perpendicular from an upper surface of the semiconductor structure. The film layer may be formed along the upper surface of the semiconductor structure without being formed along a sidewall of each opening of the plurality of openings, wherein an opening though the film layer remains above each opening of the plurality of openings.

    Multi-shape voltage pulse trains for uniformity and etch profile tuning

    公开(公告)号:US12255051B2

    公开(公告)日:2025-03-18

    申请号:US17983926

    申请日:2022-11-09

    Abstract: Embodiments of the disclosure provided herein include a method for processing a substrate in a plasma processing system. The method includes receiving a first synchronization waveform signal from a controller, delivering a first burst of first voltage pulses to an electrode assembly after receiving a first portion of the first synchronization waveform signal, wherein at least one first parameter of the first voltage pulses is set to a first value based on a first waveform parameter within the first portion of the first synchronization waveform signal, and delivering a second burst of second voltage pulses to the electrode assembly after receiving a second portion of the first synchronization waveform signal, wherein the at least one first parameter of the first voltage pulses is set to a second value based on a difference in the first waveform parameter within the second portion of the first synchronization waveform signal.

    Modular chemical mechanical polisher with simultaneous polishing and pad treatment

    公开(公告)号:US12251787B2

    公开(公告)日:2025-03-18

    申请号:US17979850

    申请日:2022-11-03

    Abstract: The present disclosure is directed towards polishing modules for performing chemical mechanical polishing of a substrate. The substrate may be a semiconductor substrate. The polishing modules described have a plurality of pads, such as polishing pads, disposed within a single polishing station. The pads are configured to remain stationary during processing, such as during polishing or buff operations. Either an x-y gantry assembly or a head actuation assembly is coupled to a system body of a polishing module and is configured to move a carrier head over the pads. Between process operations the polishing pads may be indexed to expose a new polishing pad to the carrier head.

    METHODS OF FORMING SILICON NITRIDE FILMS

    公开(公告)号:US20250087477A1

    公开(公告)日:2025-03-13

    申请号:US18367136

    申请日:2023-09-12

    Abstract: Methods of depositing improved quality silicon nitride (SixNy) films are disclosed. Exemplary methods include exposing a semiconductor substrate in a semiconductor processing chamber to a silicon-containing precursor, to a first plasma produced from a first gas mixture comprising helium (He) and nitrogen (N2), the first gas mixture comprising a ratio of helium:nitrogen in a range of from 20:1 to 1000:1, and exposing the semiconductor substrate to a second plasma produced from a second gas mixture comprising helium (He), nitrogen (N2), and ammonia (NH3).

    Optical device improvement
    80.
    发明授权

    公开(公告)号:US12249489B2

    公开(公告)日:2025-03-11

    申请号:US18131997

    申请日:2023-04-07

    Abstract: A method of processing an optical device is provided, including: positioning an optical device on a substrate support in an interior volume of a process chamber, the optical device including an optical device substrate and a plurality of optical device structures formed over the optical device substrate, each optical device structure including a bulk region formed of silicon carbide and one or more surface regions formed of silicon oxycarbide. The method further includes providing one or more process gases to the interior volume of the process chamber, and generating a plasma of the one or more process gases in the interior volume for a first time period when the optical device is on the substrate support, and stopping the plasma after the first time period. A carbon content of the one or more surface regions of each optical device structure is reduced by at least 50% by the plasma.

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