G03F7/70283

Spin-on compositions comprising an inorganic oxide component and an alkynyloxy substituted spin-on carbon component useful as hard masks and filling materials with improved shelf life
11767398 · 2023-09-26 · ·

The present invention relates to a composition comprising; components a) b) and d); wherein, component a) is a metal compound having the structure (I), component b) is a spin on high carbon polymer, having a polymer backbone comprising mono-cyclic aromatic hydrocarbon, fused-ring ring hydrocarbon moieties, or mixtures of these, having a wt. % of carbon from about 81 wt. % to about 94 wt. %, which is soluble to at least about 5 wt. % in a spin casting solvent, and wherein at least one, of said mono-cyclic aromatic hydrocarbon or said fused-ring ring hydrocarbon moieties, present in said spin on high carbon polymer, is functionalized with at least one alkynyloxy moiety of structure (VIII), and component d) is a spin casting solvent. The present invention further relates to using this composition in methods for manufacturing electronic devices through either the formation of a patterned films of high K material comprised of a metal oxide on a semiconductor substrate, or through the formation of patterned metal oxide comprised layer overlaying a semiconductor substrate which may be used to selectively etch the semiconductor substrate with a fluorine plasma. ##STR00001##

Method of Modeling a Mask Having Patterns With Arbitrary Angles
20220026812 · 2022-01-27 ·

A mask layout containing a non-Manhattan pattern is received. The received mask layout is processed. An edge of the non-Manhattan pattern is identified. A plurality of two-dimensional kernels is generated based on processed pre-selected mask layout samples. The two-dimensional kernels each have a respective rotational symmetry. The two-dimensional kernels are applied to the edge of the non-Manhattan pattern to obtain a correction field for the non-Manhattan pattern. A thin mask model is applied to the non-Manhattan pattern. The thin mask model contains a binary modeling of the non-Manhattan pattern. A near field of the non-Manhattan pattern is determined by applying the correction field to the non-Manhattan pattern having the thin mask model applied thereon. An optical model is applied to the near field to obtain an aerial image on a wafer. A resist model is applied to the aerial image to obtain a final resist image on the wafer.

SPIN-ON COMPOSITIONS COMPRISING AN INORGANIC OXIDE COMPONENT AND AN ALKYNYLOXY SUBSTITUTED SPIN-ON CARBON COMPONENT USEFUL AS HARD MASKS AND FILLING MATERIALS WITH IMPROVED SHELF LIFE
20220025109 · 2022-01-27 ·

The present invention relates to a composition comprising; components a) b) and d); wherein, component a) is a metal compound having the structure (I), component b) is a spin on high carbon polymer, having a polymer backbone comprising mono-cyclic aromatic hydrocarbon, fused-ring ring hydrocarbon moieties, or mixtures of these, having a wt. % of carbon from about 81 wt. % to about 94 wt. %, which is soluble to at least about 5 wt. % in a spin casting solvent, and wherein at least one, of said mono-cyclic aromatic hydrocarbon or said fused-ring ring hydrocarbon moieties, present in said spin on high carbon polymer, is functionalized with at least one alkynyloxy moiety of structure (VIII), and component d) is a spin casting solvent. The present invention further relates to using this composition in methods for manufacturing electronic devices through either the formation of a patterned films of high K material comprised of a metal oxide on a semiconductor substrate, or through the formation of patterned metal oxide comprised layer overlaying a semiconductor substrate which may be used to selectively etch the semiconductor substrate with a fluorine plasma.

##STR00001##

Reflective mask blank, method of manufacturing reflective mask and method of manufacturing semiconductor device
11187972 · 2021-11-30 · ·

The present invention provides a reflective mask blank and reflective mask capable of reducing the shadowing effect of EUV lithography and forming a fine pattern. As a result, a semiconductor device can be more stably manufactured with high transfer accuracy. The reflective mask blank comprises a multilayer reflective film, an absorber film and an etching mask film on a substrate in that order, wherein the absorber film is made of a material containing nickel (Ni), and the etching mask film is made of a material containing chromium (Cr) or a material containing silicon (Si).

Photomask

A photomask including a photomask body having a surface on which a mask pattern is formed and to be scanned and subjected to pattern transfer to a resist through a lens assembly including a connecting portion and a non-connecting portion. The mask pattern has a first region subjected to the pattern transfer at the connecting portion of the lens assembly and a second region subjected to the pattern transfer at the non-connecting portion. The mask pattern has, in at least one of the first and second regions, a corrected line width which is adjusted by calculation such that the resist is to have a target line width as designed. The corrected line width has a stepwise change in at least one of a scanning direction and a direction orthogonal to the scanning direction. The stepwise change is made by including a correction component based on a random number.

Method for fabricating spherical concave mirror in optical waveguide based on ultraviolet grayscale lithography

Disclosed is a method for fabricating a spherical concave mirror in an optical waveguide based on ultraviolet (UV) grayscale lithography. A key component is a specially designed mask pattern composed of a rectangle as well as a semicircle adjacent to the rectangle, where a rectangular area has no grayscale distribution, and UV light penetrating through different portions of the rectangular area has the same intensity; a semicircular area has the grayscale distribution, and the UV light penetrating through the semicircular area with the grayscale distribution is changed in intensity from the center of a circle in the radius direction according to a special function distribution law; an interlayer photoresist in the rectangular area is irradiated by the UV light penetrating through a mask plate and is developed to form an optical waveguide core.

METHOD FOR PREPARING HOLOGRAPHIC PATTERN-EXPRESSING ORGANOGEL USING DITHERING MASK
20220004147 · 2022-01-06 ·

A method of manufacturing a holographic pattern-expressing organogel, by using a dithering mask, according to an aspect of the present disclosure includes: preparing a dithering mask including white pixels and black pixels arranged in periodic patterns; photocuring a polymer by passing an ultraviolet ray through the dithering mask; passing a first solvent through the cured polymer; and passing a second solvent through the cured polymer through which the first solvent is passed.

Methods of determining scattering of radiation by structures of finite thicknesses on a patterning device

A method including: obtaining a thin-mask transmission function of a patterning device and a M3D model for a lithographic process, wherein the thin-mask transmission function is a continuous transmission mask (CTM) and the M3D model at least represents a portion of M3D attributable to multiple edges of structures on the patterning device; determining a M3D mask transmission function of the patterning device by using the thin-mask transmission function and the M3D model; and determining an aerial image produced by the patterning device and the lithographic process, by using the M3D mask transmission function.

UV lithography system
11561476 · 2023-01-24 ·

A multifunction UV or DUV (ultraviolet/deep-ultraviolet) lithography system uses a modified Schwarzschild flat-image projection system to achieve diffraction-limited, distortion-free and double-telecentric imaging over a large image field at high numerical aperture. A back-surface primary mirror enables wide-field imaging without large obscuration loss, and additional lens elements enable diffraction-limited and substantially distortion-free, double-telecentric imaging. The system can perform maskless lithography (either source-modulated or spatially-modulated), mask-projection lithography (either conventional imaging or holographic), mask writing, wafer writing, and patterning of large periodic or aperiodic structures such as microlens arrays and spatial light modulators, with accurate field stitching to cover large areas exceeding the image field size.

EUV lithography system with diffraction optics
11520235 · 2022-12-06 ·

A maskless, extreme ultraviolet (EUV) lithography scanner uses an array of microlenses, such as binary-optic, zone-plate lenses, to focus EUV radiation onto an array of focus spots (e.g. about 2 million spots), which are imaged through projection optics (e.g., two EUV mirrors) onto a writing surface (e.g., at 6× reduction, numerical aperture 0.55). The surface is scanned while the spots are modulated to form a high-resolution, digitally synthesized exposure image. The projection system includes a diffractive mirror, which operates in combination with the microlenses to achieve point imaging performance substantially free of geometric and chromatic aberration. Similarly, a holographic EUV lithography stepper can use a diffractive photomask in conjunction with a diffractive projection mirror to achieve substantially aberration-free, full-field imaging performance for high-throughput, mask-projection lithography. Maskless and holographic EUV lithography can both be implemented at the industry-standard 13.5-nm wavelength, and could potentially be adapted for operation at a 6.7-nm wavelength.