Mask blank, transfer mask, and method for manufacturing semiconductor device

    公开(公告)号:US12013631B2

    公开(公告)日:2024-06-18

    申请号:US18073794

    申请日:2022-12-02

    Inventor: Hiroaki Shishido

    CPC classification number: G03F1/26 G03F1/50 G03F1/54 G03F7/20

    Abstract: A mask blank including a light shielding film pattern having high ArF light fastness.
    The light shielding film is on a transparent substrate. In the mask blank, the light shielding film is a single layer film formed of a material containing silicon and nitrogen, and the light shielding film has an optical density to an ArF excimer laser exposure light of 2.5 or more, a surface reflectance to the exposure light of 40% or less, a back-surface reflectance to the exposure light of 40% or less, a transmittance to a light having a wavelength of 900 nm of 50% or less, an extinction coefficient to a light having a wavelength of 900 nm of 0.04 or more, and a thickness of 60 nm or less.

    METHOD FOR MANUFACTURING ELEMENT SUBSTRATE, ELEMENT SUBSTRATE, AND LIQUID EJECTION HEAD

    公开(公告)号:US20230311493A1

    公开(公告)日:2023-10-05

    申请号:US18184076

    申请日:2023-03-15

    Abstract: Provided is a method for manufacturing an element substrate for use in a liquid ejection head for ejecting a liquid to a recording medium. The element substrate, includes: a substrate having a nozzle including an ejection port, and a pressure generating chamber communicating with the nozzle, and subjected to a liquid repellent treatment on a part of a surface on a side opposed to the recording medium; and a generating element for generating an energy for ejecting the liquid. The method for manufacturing an element substrate includes: a liquid repellent treatment step of performing the liquid repellent treatment on the substrate; and a liquid repellent region removing step of removing a part of a liquid repellent region subjected to the liquid repellent treatment so that a non-liquid repellent region not subjected to the liquid repellent treatment is exposed at a surface of the substrate opposed to the recording medium.

    Overlay pattern
    6.
    发明授权

    公开(公告)号:US11635680B2

    公开(公告)日:2023-04-25

    申请号:US17405093

    申请日:2021-08-18

    Inventor: Mei-Li Wang

    Abstract: An overlay pattern includes a light-transmitting region and a first light-proof region. The first light-proof region and the light-transmitting region are arranged on a same plane, and an area of the first light-proof region is larger than an area of the light-transmitting region. An orthographic projection of the first light-proof region on the plane and an orthographic projection of the light-transmitting region on the plane do not overlap and form a first rectangular region.

    Method for detecting particles on the surface of an object, wafer, and mask blank

    公开(公告)号:US11555783B2

    公开(公告)日:2023-01-17

    申请号:US16585374

    申请日:2019-09-27

    Abstract: A method for detecting deposited particles (P) on a surface (11) of an object (3, 14) includes: irradiating a partial region of the surface (11) of the object (3, 14) with measurement radiation; detecting measurement radiation scattered on the irradiated partial region, and detecting particles in the partial region of the surface of the object (3, 14) based on the detected measurement radiation. In the steps of irradiating and detecting, the surface (11) of the object (3, 14) has an anti-reflective coating (13) and/or a surface structure (15) for reducing the reflectivity of the surface (11) for the measurement radiation (9), wherein the particle detection limit is lowered due to the anti-reflective coating (13) and/or the surface structure (15). Also disclosed are a wafer (3) and a mask blank for carrying out the method.

    Mask blank, transfer mask, and method for manufacturing semiconductor device

    公开(公告)号:US11543744B2

    公开(公告)日:2023-01-03

    申请号:US17397642

    申请日:2021-08-09

    Inventor: Hiroaki Shishido

    Abstract: A mask blank including a light shielding film pattern having high ArF light fastness.
    The light shielding film is on a transparent substrate. In the mask blank, the light shielding film is a single layer film formed of a material containing silicon and nitrogen, and the light shielding film has an optical density to an ArF excimer laser exposure light of 2.5 or more, a surface reflectance to the exposure light of 40% or less, a back-surface reflectance to the exposure light of 40% or less, a transmittance to a light having a wavelength of 900 nm of 50% or less, an extinction coefficient to a light having a wavelength of 900 nm of 0.04 or more, and a thickness of 60 nm or less.

    METHODS FOR PRODUCING AN ETCH RESIST PATTERN ON A METALLIC SURFACE

    公开(公告)号:US20220136113A1

    公开(公告)日:2022-05-05

    申请号:US17647756

    申请日:2022-01-12

    Applicant: Kateeva, Inc.

    Abstract: A method of forming a metallic pattern on a substrate is provided. The method includes applying onto a metallic surface, a chemically surface-activating solution having an activating agent that chemically activates the metallic surface; non-impact printing an etch-resist ink on the activated surface to produce an etch resist mask according to a predetermined pattern, wherein at least one ink component within the etch-resist ink undergoes a chemical reaction with the activated metallic surface to immobilize droplets of the etch-resist ink when hitting the activated surface; performing an etching process to remove unmasked metallic portions that are not covered with the etch resist mask; and removing the etch-resist mask.

    PATTERN DECOMPOSITION LITHOGRAPHY TECHNIQUES

    公开(公告)号:US20210375807A1

    公开(公告)日:2021-12-02

    申请号:US17404870

    申请日:2021-08-17

    Abstract: Techniques are disclosed for realizing a two-dimensional target lithography feature/pattern by decomposing (splitting) it into multiple unidirectional target features that, when aggregated, substantially (e.g., fully) represent the original target feature without leaving an unrepresented remainder (e.g., a whole-number quantity of unidirectional target features). The unidirectional target features may be arbitrarily grouped such that, within a grouping, all unidirectional target features share a common target width value. Where multiple such groupings are provided, individual groupings may or may not have the same common target width value. In some cases, a series of reticles is provided, each reticle having a mask pattern correlating to a grouping of unidirectional target features. Exposure of a photoresist material via the aggregated series of reticles substantially (e.g., fully) produces the original target feature/pattern. The pattern decomposition techniques may be integrated into any number of patterning processes, such as litho-freeze-litho-etch and litho-etch-litho-etch patterning processes.

Patent Agency Ranking