Radiation Mask Patents (Class 430/5)
  • Patent number: 11619875
    Abstract: In a method of manufacturing a reflective mask, a photo resist layer is formed over a mask blank. The mask blank includes a substrate, a reflective multilayer on the substrate, a capping layer on the reflective multilayer, an absorber layer on the capping layer and a hard mask layer, and the absorber layer is made of Cr, CrO or CrON. The photo resist layer is patterned, the hard mask layer is patterned by using the patterned photo resist layer, the absorber layer is patterned by using the patterned hard mask layer, and an additional element is introduced into the patterned absorber layer to form a converted absorber layer.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: April 4, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Hsin-Chang Lee, Chia-Jen Chen, Pei-Cheng Hsu, Ta-Cheng Lien
  • Patent number: 11609490
    Abstract: Extreme ultraviolet (EUV) mask blanks, methods for their manufacture and production systems therefor are disclosed. The EUV mask blanks comprise a substrate; a multilayer stack of reflective layers on the substrate; a capping layer on the multilayer stack of reflecting layers; and an absorber layer on the capping layer, the absorber layer comprising an alloy selected from an alloy of tantalum, iridium and antimony; an alloy of iridium and antimony; and an alloy of tantalum, ruthenium and antimony.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: March 21, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Shuwei Liu, Shiyu Liu, Vibhu Jindal
  • Patent number: 11604406
    Abstract: Embodiments disclosed herein include EUV reticles and methods of forming such reticles. In an embodiment a method of forming an EUV reticle comprises providing a reticle, where the reticle comprises, a substrate, a mirror layer over the substrate, where the mirror layer comprises a plurality of first mirror layers and second mirror layers in an alternating pattern, and a capping layer over the mirror layer. In an embodiment, the method may further comprise disposing a first layer over the capping layer, patterning an opening in the first layer, and disposing a second layer in the opening, where the second layer is disposed with an electroless deposition process.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: March 14, 2023
    Assignee: Intel Corporation
    Inventors: John Magana, Guojing Zhang, Yang Cao
  • Patent number: 11604421
    Abstract: Provided are an overlay mark, and an overlay measurement method and a semiconductor device manufacturing method using the overlay mark. Specifically, provided is an overlay mark for determining relative misalignment between two or more pattern layers or between two or more patterns separately formed in one pattern layer, the overlay mark including a first overlay mark positioned in the center, a second overlay mark positioned above and below the first overlay mark or on the left and right thereof, and a third overlay mark and a fourth overlay mark each positioned in a diagonal line with the first overlay mark in between.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: March 14, 2023
    Assignee: AUROS TECHNOLOGY, INC.
    Inventors: Sung Hoon Hong, Hyun Jin Chang, Hyun Chui Lee, Jack Woo
  • Patent number: 11599018
    Abstract: The present invention is to provide a pellicle characterized by including a pellicle film and a pellicle frame, in which the pellicle film is stretched on the pellicle frame, and the pellicle film is an annealed pellicle film, and to provide a method for producing a pellicle by stretching a pellicle film on a pellicle frame, including the step of annealing the pellicle film alone before stretching the pellicle film on the pellicle frame, annealing the pellicle after stretching the pellicle film on the pellicle frame, or annealing the pellicle film alone and the pellicle both before and after stretching the pellicle film on the pellicle frame.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: March 7, 2023
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Akinori Nishimura
  • Patent number: 11599016
    Abstract: A physical vapor deposition (PVD) chamber and a method of operation thereof are disclosed. Chambers and methods are described that provide a chamber comprising an upper shield with two holes that are positioned to permit alternate sputtering from two targets. A process for improving reflectivity from a multilayer stack is also disclosed.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: March 7, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Vibhu Jindal, Wen Xiao, Sanjay Bhat
  • Patent number: 11599019
    Abstract: According to an aspect of the present disclosure there is provided a method for forming an EUVL pellicle, the method comprising: coating a carbon nanotube, CNT, membrane, and mounting the CNT membrane to a pellicle frame, wherein coating the CNT membrane comprises: pre-coating CNTs of the membrane with a seed material, and forming an outer coating on the pre-coated CNTs, the outer coating covering the pre-coated CNTs, the forming of the outer coating comprising depositing a coating material on the pre-coated CNTs by atomic layer deposition.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: March 7, 2023
    Assignee: IMEC VZW
    Inventors: Marina Timmermans, Cedric Huyghebaert, Ivan Pollentier, Elie Schapmans, Emily Gallagher
  • Patent number: 11592737
    Abstract: A reflective mask includes a substrate, a reflective multilayer disposed on the substrate, a capping layer disposed on the reflective multilayer, and an absorber layer disposed on the capping layer. The absorber layer includes a base material made of one or more of a Cr based material, an Ir based material, a Pt based material, or Co based material, and further contains one or more additional elements selected from the group consisting of Si, B, Ge, Al, As, Sb, Te, Se and Bi.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: February 28, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Hung-Yi Tsai, Wei-Che Hsieh, Ta-Cheng Lien, Hsin-Chang Lee, Ping-Hsun Lin, Hao-Ping Cheng, Ming-Wei Chen, Szu-Ping Tsai
  • Patent number: 11592738
    Abstract: Extreme ultraviolet (EUV) mask blanks, methods for their manufacture and production systems therefor are disclosed. The EUV mask blanks comprise a substrate; a multilayer stack of reflective layers on the substrate; a capping layer on the multilayer stack of reflecting layers; and an absorber layer on the capping layer, the absorber layer comprising an alloy of molybdenum (Mo) and antimony (Sb).
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: February 28, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Shuwei Liu, Shiyu Liu, Vibhu Jindal
  • Patent number: 11592739
    Abstract: The present invention is to provide a pellicle frame in a frame shape, having an upper end face to arrange a pellicle film thereon and a lower end face to face a photomask, and which is characterized by being provided with a notched part from an outer side face toward an inner side face of the upper end face, and to provide a pellicle characterized by including the pellicle frame as a component.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: February 28, 2023
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Yu Yanase
  • Patent number: 11586075
    Abstract: A method for aligning molecular orientations of liquid crystals and/or polymeric materials into spatially variant patterns uses metamasks. When non-polarized or circularly polarized light is transmitted through or reflected by the metamasks, spatially varied polarization direction and intensity patterns of light can be generated. By projecting the optical patterns of the metamasks onto substrates coated with photoalignment materials, spatially variant molecular orientations encoded in the polarization and intensity patterns are induced in the photoalignment materials, and transfer into the liquid crystals. Possible designs for the metamask use nanostructures of metallic materials (e.g., rectangular nanocuboids of metallic materials arrayed on a transparent substrate).
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: February 21, 2023
    Assignee: KENT STATE UNIVERSITY
    Inventors: Qi-Huo Wei, Hao Yu, Yubing Guo, Miao Jiang, Oleg D. Lavrentovich
  • Patent number: 11581423
    Abstract: Integrated circuit devices and methods of forming the same are provided. The methods may include sequentially forming an underlying mask layer and a preliminary first mask layer on a substrate, forming a first mask structure by removing a portion of the preliminary first mask layer, and then forming a preliminary second mask layer. The preliminary second mask layer may enclose the first mask structure in a plan view. The methods may also include forming a second mask structure by removing a portion of the preliminary second mask layer and forming a vertical channel region including a portion of the substrate by sequentially etching the underlying mask layer and the substrate. The second mask structure may be connected to the first mask structure, and etching the underlying mask layer may be performed using the first and the second mask structures as an etch mask.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: February 14, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kang Ill Seo, Joon Goo Hong
  • Patent number: 11581265
    Abstract: A semiconductor device of an embodiment includes a plurality of chip regions, each including a memory region in which a plurality of memory cells is arranged, and a kerf region disposed between the chip regions and surrounding each chip region. Paired marks are arranged in a vicinity of the memory region of one of the plurality of chip regions and in a common hierarchical layer in the kerf region, and the paired marks are disposed over upper and lower hierarchical layers.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: February 14, 2023
    Assignee: Kioxia Corporation
    Inventor: Takeshi Ito
  • Patent number: 11579521
    Abstract: Disclosed is a blankmask for EUV includes a substrate, a reflection film that is stacked on the substrate; and an absorbing film that is stacked on the reflection film. The reflection film has a structure in which a pair including a first layer made of Ru or a Ru compound in which one or more of Mo, Nb, and Zr are added to Ru, and a second layer made of Si is stacked plural times. Interdiffusion between the respective layers constituting the reflection film is suppressed.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: February 14, 2023
    Assignee: S&S TECH CO., LTD.
    Inventors: Cheol Shin, Jong-Hwa Lee, Chul-Kyu Yang, Gil-Woo Kong
  • Patent number: 11566122
    Abstract: A thermoplastic elastomer compound includes polyolefin elastomer, high softening point tackifier, and, optionally, styrenic block copolymer. When styrenic block copolymer is present, the weight ratio of polyolefin elastomer to styrenic block copolymer is no less than about 1:1. The polyolefin elastomer has a POE Tan Delta Peak Temperature, the styrenic block copolymer has a SBC Tan Delta Peak Temperature, and the thermoplastic elastomer compound has a Compound Tan Delta Peak Temperature. The Compound Tan Delta Peak Temperature is greater than the POE Tan Delta Peak Temperature. When styrenic block copolymer is present, Compound Tan Delta Peak Temperature is also greater than the SBC Tan Delta Peak Temperature. The thermoplastic elastomer compound exhibits useful damping properties at or above room temperature and can be formed into plastic articles, including foamed plastic articles and/or crosslinked plastic articles, which can be useful for a variety of damping applications.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: January 31, 2023
    Assignee: Avient Corporation
    Inventor: Jiren Gu
  • Patent number: 11567399
    Abstract: A pellicle having a metal oxysilicide layer. A pellicle having a molybdenum layer, a ruthenium layer and a silicon oxynitride layer, wherein the molybdenum layer is disposed between the ruthenium layer and the silicon oxynitride layer. A method of manufacturing a pellicle for a lithographic apparatus, the method including providing a metal oxysilicide layer. A lithographic assembly including a pellicle having a metal oxysilicide layer. The use of a pellicle having a metal oxysilicide layer in a lithographic apparatus.
    Type: Grant
    Filed: December 31, 2021
    Date of Patent: January 31, 2023
    Assignee: ASML Netherlands B.V.
    Inventors: Zomer Silvester Houweling, Chaitanya Krishna Ande, Dennis De Graaf, Thijs Kater, Michael Alfred Josephus Kuijken, Mahdiar Valefi
  • Patent number: 11561464
    Abstract: An extreme ultra-violet mask includes a substrate, a multi-layered mirror layer, a capping layer, a first tantalum-containing oxide layer, a tantalum-containing nitride layer, and a second tantalum-containing oxide layer. The multi-layered mirror layer is over the substrate. The capping layer is over the multi-layered mirror layer. The first tantalum-containing oxide layer is over the capping layer. The tantalum-containing nitride layer is over the first tantalum-containing oxide layer. The second tantalum-containing oxide layer is over the tantalum-containing nitride layer.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: January 24, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Pei-Cheng Hsu, Ta-Cheng Lien, Hsin-Chang Lee
  • Patent number: 11561466
    Abstract: Monolithic framed pellicle membrane integrating a structural framing member with a membrane spanning the framing member. The monolithic frame pellicle membrane is suitable as an overlay of a reticle employed in lithography operations of integrated circuit manufacture. A semiconductor-on-insulator (SOI) wafer may be machined from the backside, for example with a bonnet polisher, to form a pellicle framing member by removing a portion of a base semiconductor substrate of the SOI wafer selectively to top semiconductor layer of the SOI wafer, which is retained as a pellicle membrane. In some exemplary embodiments suitable for extreme ultraviolet (EUV) lithography applications, at least the top semiconductor layer of the SOI wafer is a substantially monocrystalline silicon layer.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: January 24, 2023
    Assignee: Intel Corporation
    Inventors: John Magana, Guojing Zhang
  • Patent number: 11556053
    Abstract: Extreme ultraviolet (EUV) mask blanks, methods for their manufacture and production systems therefor are disclosed. The EUV mask blanks comprise a substrate; a multilayer stack of reflective layers on the substrate; a capping layer on the multilayer stack of reflecting layers; an absorber layer on the capping layer, the absorber layer comprising an antimony-containing material; and a hard mask layer on the absorber layer, the hard mask layer comprising a hard mask material selected from the group consisting of CrO, CrON, TaNi, TaRu and TaCu.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: January 17, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Shuwei Liu, Wen Xiao, Vibhu Jindal, Azeddine Zerrade
  • Patent number: 11551347
    Abstract: Devices, systems, and methods of generating and providing a target topographic map for finishing a photomask blank are disclosed. A method includes receiving topographic data corresponding to an uncompleted photomask blank, receiving functional specifications for flatness of an acceptable photomask blank, and generating the target topographic map for first and/or second major surfaces of the blank, which provides instructions for removing material from the first and/or second major surfaces such that the first and second major surfaces achieve a flatness that passes each functional specification. The amount of material removed reflects a reduction in material necessary to pass the functional specifications.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: January 10, 2023
    Assignee: Corning Incorporated
    Inventors: David L Aronstein, Katherine Nicole Ballman, Christopher Alan Lee
  • Patent number: 11550215
    Abstract: Provided is a reflective mask blank with which it is possible to further reduce the shadowing effect of a reflective mask, and also possible to form a fine and highly accurate phase-shift pattern. A reflective mask blank having, in the following order on a substrate, a multilayer reflective film and a phase-shift film that shifts the phase of EUV light, said reflective mask blank characterized in that: the phase-shift film has a first layer and a second layer; the first layer comprises a material that contains at least one element from among tantalum (Ta) and chromium (Cr); and the second layer comprises a metal-containing material that contains ruthenium (Ru) and at least one element from among chromium (Cr), nickel (Ni), cobalt (Co), vanadium (V), niobium (Nb), molybdenum (Mo), tungsten (W), and rhenium (Re).
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: January 10, 2023
    Assignee: HOYA CORPORATION
    Inventors: Yohei Ikebe, Tsutomu Shoki
  • Patent number: 11546530
    Abstract: An artifact caused by secondary reflection is reduced. An imaging device according to an embodiment includes: a diffuser (110) that converts incident light into scattered light whose diameter is expanded in accordance with a propagation distance and outputs the scattered light; and a light receiver (132) that converts light diffused by the diffuser into an electric signal.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: January 3, 2023
    Assignee: SONY CORPORATION
    Inventors: Ilya Reshetouski, Atsushi Ito
  • Patent number: 11545347
    Abstract: Apparatus and methods for forming and using internally divisible physical vapor deposition (PVD) process chambers using shutter disks are provided herein. In some embodiments, an internally divisible process chamber may include an upper chamber portion having a conical shield, a conical adaptor, a cover ring, and a target, a lower chamber portion having a substrate support having inner and outer deposition rings, and wherein the substrate support is vertically movable, and a shutter disk assembly configured to internally divide the process chamber and create a separate sealed deposition cavity and a separate sealed oxidation cavity, wherein the shutter disk assembly includes one or more seals disposed along its outer edges and configured to contact at least one of the conical shield, the conical adaptor, or the deposition rings to form the separate sealed deposition and oxidation cavities.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: January 3, 2023
    Assignee: APPLIED MATERIALS, INC.
    Inventors: John Joseph Mazzocco, Anantha K. Subramani, Yang Guo
  • Patent number: 11537040
    Abstract: Extreme ultraviolet (EUV) mask blanks, methods for their manufacture and production systems therefor are disclosed. The EUV mask blanks comprise a substrate; a multilayer stack of reflective layers on the substrate; a capping layer on the multilayer stack of reflecting layers; an absorber layer on the capping layer, the absorber layer comprising a tantalum-containing material; and a hard mask layer on the absorber layer, the hard mask layer comprising a hard mask material selected from the group consisting of CrO, CrON, TaNi, TaRu and TaCu.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: December 27, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Shuwei Liu, Wen Xiao, Vibhu Jindal, Azeddine Zerrade
  • Patent number: 11537050
    Abstract: A pellicle assembly for large-size photomasks including a frame member configured to be affixed to a large-size photomask substrate, a substantially rigid and transparent pellicle membrane affixed to the frame member so as to protect at least a portion of the large-size photomask substrate from contamination during usage, storage and/or transport, and a coating on at least one of top and bottom surfaces of the pellicle membrane that binds the pellicle membrane to prevent separation of pellicle membrane material in the event of breakage.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: December 27, 2022
    Assignee: PHOTRONICS, INC.
    Inventors: Bryan S. Kasprowicz, Christopher Progler
  • Patent number: 11531263
    Abstract: Some embodiments relate to photomask for mask patterning. The photomask includes a transparent layer comprising quartz, and a molybdenum silicide (MoSi) layer overlying the transparent layer. A first shielding layer overlies the MoSi layer and has a first thickness and a first optical density. A second shielding layer overlies the first shielding layer and has a second thickness and a second optical density. The second thickness is less than one third of the first thickness, and the second optical density is less than one fourth of the first optical density. An overall optical density of the first and second shielding layers is at least 1.8.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: December 20, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chih-Chiang Tu, Chun-Lang Chen
  • Patent number: 11531262
    Abstract: A reflective mask blank includes a substrate, a reflective multilayer (RML) disposed on the substrate, a capping layer disposed on the reflective multilayer, and an absorber layer disposed on the capping layer. The absorber layer has length or width dimensions smaller than the capping layer, and part of the capping layer is exposed by the absorber layer. The dimension of the absorber layer and the hard mask layer ranges between 146 cm to 148 cm. The dimensions of the substrate, the RML, and the capping layer range between 150 cm to 152 cm.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: December 20, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Hsin-Chang Lee, Pei-Cheng Hsu, Ta-Cheng Lien, Wen-Chang Hsueh
  • Patent number: 11531264
    Abstract: Provided is a reflective mask blank with which it is possible to further reduce the shadowing effect of a reflective mask, and also possible to form a fine and highly accurate phase-shift pattern. A reflective mask blank having, in the following order on a substrate, a multilayer reflective film and a phase-shift film that shifts the phase of EUV light, said reflective mask blank characterized in that the phase-shift film has a thin film comprising a metal-containing material that contains: ruthenium (Ru); and at least one element from among chromium (Cr), nickel (Ni), (Co), aluminum (Al), silicon (Si), titanium (Ti), vanadium (V), germanium (Ge), niobium (Nb), molybdenum (Mo), tin (Sn), tellurium (Te), hafnium (Hf), tungsten (W), and rhenium (Re).
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: December 20, 2022
    Assignee: HOYA CORPORATION
    Inventors: Yohei Ikebe, Tsutomu Shoki
  • Patent number: 11526039
    Abstract: A display device includes first and second substrates each including a short side and a long side, ground parts located on at least one of the short and long sides of each of the first and second substrates and including at least one first ground surfaces, which are perpendicular to opposing surfaces of the first and second substrates, and at least one second ground surfaces, which are provided at at least one edge of the second substrate to define an obtuse angle with reference to the first ground surfaces, and unevenness disposed on the first ground surfaces along a first direction, where the unevenness defines an acute angle with reference to a normal line to the opposing surfaces.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: December 13, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kang Bin Yi, Dong Rak Ko, Sung Ho Kim, Eun Ji Seo, Sung Hun Son, Hee Kyun Shin, Seok Lyul Yoon, Jeong Seok Lee, Sung Wook Jung, Hwan Kyeong Jeong
  • Patent number: 11526073
    Abstract: A pellicle comprises a stress-controlled metal layer. The stress in said metal layer may be between about 500-50 MPa. A method of manufacturing a pellicle comprising a metal layer includes deposing said metal layer by plasma physical vapor deposition. Process parameters are selected so as to produce a desired stress value in said metal layer, such as between about 500-50 MPa.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: December 13, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Po Hsuan Li, Yu-Ting Lin, Yun-Yue Lin, Huai-Tei Yang
  • Patent number: 11527412
    Abstract: A method for performing an ion implantation process including providing a hardmask layer disposed atop a substrate, providing a photoresist layer disposed atop the hardmask layer and defining a pattern exposing a portion of the hardmask layer, performing a room temperature ion implantation process wherein an ion beam formed of an ionized first dopant species is directed onto the exposed portion of the hardmask layer to make the exposed portion more susceptible to ion etching or wet etching, performing an etching process wherein the exposed portion of the hardmask layer is etched away to expose an underlying portion of the substrate, and performing a high energy, hot ion implantation process wherein an ion beam formed of a ionized second dopant species is directed onto the exposed portion of the substrate.
    Type: Grant
    Filed: December 6, 2020
    Date of Patent: December 13, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Qintao Zhang, Samphy Hong, David J. Lee, Felix Levitov, Lei Zhong, Wei Zou
  • Patent number: 11520228
    Abstract: A method of processing a layer structure with a semiconductor layer to form metasurface structures is disclosed. The method relies on a layer structure that includes a substrate, a layer stack, and resist structures. The latter are made of a resist material that includes a semiconductor element. The layer stack is arranged on top of the substrate. The resist structures form a pattern on the layer stack. The layer stack includes: a semiconductor layer (arranged on top of the substrate); a protective layer (arranged on top of the semiconductor layer); and a transfer layer (arranged on top of the protective layer). The layer structure is obtained by forming the layer stack on top of the substrate, wherein the protective layer is deposited using an atomic-layer deposition process.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: December 6, 2022
    Assignee: International Business Machines Corporation
    Inventors: Ute Drechsler, Emanuel Marc Löertscher
  • Patent number: 11513437
    Abstract: Extreme ultraviolet (EUV) mask blanks, methods for their manufacture and production systems therefor are disclosed. The EUV mask blanks comprise a substrate; a multilayer stack of reflective layers on the substrate; a capping layer on the multilayer stack of reflecting layers; and an absorber layer on the capping layer, the absorber layer comprising an alloy selected from an alloy of ruthenium (Ru) and silicon (Si); an alloy tantalum (Ta) and platinum (Pt); and an alloy of ruthenium (Ru) and molybdenum (Mo).
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: November 29, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Shiyu Liu, Shuwei Liu, Vibhu Jindal
  • Patent number: 11513081
    Abstract: A substrate inspection method in a substrate treatment system including a plurality of treatment apparatuses each performing a predetermined treatment on a substrate, includes: imaging a surface of a substrate before being treated in the treatment apparatuses to acquire a first substrate image; extracting a predetermined feature amount from the first substrate image; selecting an inspection recipe corresponding to the feature amount extracted from the first substrate image, from a storage unit in which a plurality of inspection recipes each set corresponding to the feature amount in a different range are stored; imaging the surface of the substrate after being treated in the treatment apparatuses to acquire a second substrate image; and determining presence or absence of a defect of the substrate, based on the selected inspection recipe and the second substrate image.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: November 29, 2022
    Assignee: Tokyo Electron Limited
    Inventors: Takuya Mori, Makoto Hayakawa
  • Patent number: 11506969
    Abstract: A reflective mask includes a substrate, a reflective multilayer disposed over the substrate, a capping layer disposed over the reflective multilayer, an intermediate layer disposed over the capping layer, an absorber layer disposed over the intermediate layer, and a cover layer disposed over the absorber layer. The intermediate layer includes a material having a lower hydrogen diffusivity than a material of the capping layer.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: November 22, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Pei-Cheng Hsu, Ta-Cheng Lien, Hsin-Chang Lee
  • Patent number: 11506968
    Abstract: A laser annealing method performed on a reflective photomask may include preparing a reflective photomask including a pattern area and a border area surrounding the pattern area and irradiating a laser beam onto the border area of the reflective photomask. The irradiating of the laser beam may include split-irradiating a plurality of laser beam spots onto the border area. Each of the plurality of laser beam spots may be shaped using a beam shaper. The beam shaper may include a blind area, a transparent area at a center of the blind area, and a semitransparent area between the blind area and the transparent area. Each of the plurality of laser beam spots may include a center portion passing through the transparent area and having a uniform energy profile and an edge portion passing through the semitransparent area and having an inclined energy profile.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: November 22, 2022
    Inventors: Hakseung Han, Sanguk Park, Jongju Park, Raewon Yi
  • Patent number: 11508580
    Abstract: A technique for suppressing a metal component from remaining at a bottom of a mask pattern when the mask pattern is formed using a metal-containing resist film. A developable anti reflection film 103 is previously formed below a resist film 104. Further, after exposing and developing the wafer W, TMAH is supplied to the wafer W to remove a surface of the anti-reflection film 103 facing a bottom of the recess pattern 110 of the resist film 104. Therefore, the metal component 105 can be suppressed from remaining at the bottom of the recess pattern 110. Therefore, when the SiO2 film 102 is subsequently etched using the pattern of the resist film 104, the etching is not hindered, so that defects such as bridges can be suppressed.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: November 22, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Takashi Yamauchi, Shinichiro Kawakami, Masashi Enomoto
  • Patent number: 11500281
    Abstract: A reflective film coated substrate includes a substrate having two main surfaces opposite to each other and end faces connected to outer edges of the two main surfaces; and a reflective film formed on one of the main surfaces and extending onto at least part of the end faces. The reflective film on the main surface has a multilayer structure including low refractive index layers and high refractive index layers alternately formed. The reflective film which extends onto the end faces has a single-layer structure containing a first element higher in content than any other element in the low refractive index layers and a second element higher in content than any other element in the high refractive index layers.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: November 15, 2022
    Assignee: HOYA CORPORATION
    Inventors: Kazuhiro Hamamoto, Takashi Uchida
  • Patent number: 11500282
    Abstract: A reflective mask includes a substrate, a reflective multilayer disposed over the substrate, a capping layer disposed over the reflective multilayer, an intermediate layer disposed over the capping layer, an absorber layer disposed over the intermediate layer, and a cover layer disposed over the absorber layer. The absorber layer includes one or more layers of an Ir based material, a Pt based material or a Ru based material.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: November 15, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventor: Yun-Yue Lin
  • Patent number: 11493842
    Abstract: The present invention provides a photomask including a substrate, a circuit pattern on the substrate, an electrostatic discharge (ESD) ring on the substrate and an ESD line on the substrate. The ESD structure surrounds the circuit pattern. The ESD line extends between an edge of the substrate and the ESD structure, in which the ESD line includes an edge portion extending beyond an end of an edge of the ESD structure, and the edge portion of the ESD line includes at least one comb-shaped structure.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: November 8, 2022
    Assignee: Yangtze Memory Technologies Co., Ltd.
    Inventors: Peng Jiang, Yuping Mu, Hong Fang
  • Patent number: 11493841
    Abstract: An extreme ultraviolet mask and method of manufacture thereof includes: providing a glass-ceramic block; forming a glass-ceramic substrate from the glass-ceramic block; and depositing a planarization layer on the glass-ceramic substrate.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 8, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Ralf Hofmann, Majeed A. Foad, Cara Beasley
  • Patent number: 11487198
    Abstract: A patterning device, includes: an absorber layer on a patterning device substrate; and a reflective or transmissive layer on the patterning device substrate, wherein the absorber layer and the reflective or transmissive layer together define a pattern layout having a main feature and an attenuated sub-resolution assist feature paired with the main feature, wherein: the main feature is configured to generate, upon transferring the device pattern to a layer of patterning material on a substrate, the main feature in the layer of patterning material, and upon the transferring the pattern to the layer of patterning material, the attenuated sub-resolution assist feature is configured to avoid generating a feature in the layer of patterning material and to produce a different radiation intensity than the main feature.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: November 1, 2022
    Assignee: ASML Netherlands B.V.
    Inventors: Duan-Fu Stephen Hsu, Jingjing Liu
  • Patent number: 11487197
    Abstract: Phase shift masks for an extreme ultraviolet lithography process includes a substrate, a reflection layer on the substrate, a capping layer on the reflection layer, and phase shift patterns on the capping layer. Each of the phase shift patterns may include a lower absorption pattern on the capping layer and an upper absorption pattern on the lower absorption pattern. A refractive index of the upper absorption pattern may be higher than a refractive index of the lower absorption pattern, and a thickness of the upper absorption pattern is smaller than a thickness of the lower absorption pattern.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: November 1, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seongsue Kim, Dongwan Kim, Hwanseok Seo
  • Patent number: 11480866
    Abstract: Apparatus and methods to improve centroid wavelength uniformity of EUV mask blanks are disclosed. The apparatus and methods may utilize one or more of heating the backside and/or the front side of the EUV mask blank. Selected regions and sub regions of the EUV mask blank are selectively heated, resulting in improved centroid wavelength uniformity of EUV mask blanks.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: October 25, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Herng Yau Yoong, Wen Xiao, Ribhu Gautam, Sanjay Bhat, Vibhu Jindal
  • Patent number: 11480865
    Abstract: Apparatus and methods for improving flatness of extreme ultraviolet (EUV) mask blanks are disclosed. The apparatus and methods may utilize one or more of heating the backside and/or the front side of the EUV mask blank and a cooling system. Interfacial layers of the EUV mask blank are selectively heated, resulting in improved flatness of the EUV mask blanks.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: October 25, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Vibhu Jindal, Sanjay Bhat, Wen Xiao, Vinodh Ramachandran
  • Patent number: 11480867
    Abstract: Provided are a reflective mask blank, having a phase shift film having little dependence of phase difference and reflectance on film thickness, and a reflective mask. The reflective mask blank is characterized in that the phase shift film is composed of a material comprised of an alloy having two or more types of metal so that reflectance of the surface of the phase shift film is more than 3% to not more than 20% and so as to have a phase difference of 170 degrees to 190 degrees, and when a group of metal elements that satisfies the refractive index n and the extinction coefficient k of k>?*n+? is defined as Group A and a group of metal elements that satisfies the refractive index n and the extinction coefficient k of k<?*n+? is defined as Group B, the alloy is such that the composition ratio is adjusted so that the amount of change in the phase difference is within the range of ±2 degrees and the amount of change in reflectance is within the range of ±0.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: October 25, 2022
    Assignee: HOYA CORPORATION
    Inventors: Yohei Ikebe, Tsutomu Shoki, Takahiro Onoue, Hirofumi Kozakai
  • Patent number: 11480869
    Abstract: A photomask includes a substrate, a multilayer stack disposed over the substrate and configured to reflect a radiation, a capping layer over the multilayer stack, and an anti-reflective layer over the capping layer. The anti-reflective layer comprises a first pattern, wherein the first pattern exposes the capping layer and is configured as a printable feature. The photomask also includes an absorber spaced apart from the printable feature from a top-view perspective.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: October 25, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Chien-Hung Lai, Hao-Ming Chang, Chia-Shih Lin, Hsuan-Wen Wang, Yu-Hsin Hsu, Chih-Tsung Shih, Yu-Hsun Wu
  • Patent number: 11480870
    Abstract: The present invention is to provide a pellicle frame in a frame shape having an upper end face on which a pellicle film is to be arranged and a lower end face to face a photomask, which is characterized by being provided with a notched part from the outer side face toward inner side face of the lower end face; a pellicle including the pellicle frame as an element; and a method for peeling a pellicle from a photomask onto which the pellicle has been attached, which is characterized by inserting a peeling jig into a notched part from a side face of a pellicle frame, and moving the peeling jig in an upper end face direction of the pellicle frame in this state to peel off the pellicle from the photomask.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: October 25, 2022
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Yu Yanase
  • Patent number: 11480717
    Abstract: A grating structure for a diffractive optic includes grating lines, each of which is approximated by successive segments. Longitudinal axes of the segments each have an angle relative to a first coordinate axis of a reference coordinate system. A first section of a first one of the grating lines is approximated by a first group of the segments, and a second section adjacent to the first section of the first grating line is approximated by a second group of segments. The longitudinal axes of a major portion of the segments of the first group have a first predetermined angle relative to the first coordinate axis of the reference coordinate system, and the longitudinal axes of a major portion of the segments of the second group have a second predetermined angle different from the first predetermined angle relative to the first coordinate axis of the reference coordinate system.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: October 25, 2022
    Assignee: DR. JOHANNES HEIDENHAIN GMBH
    Inventors: Josef Weidmann, Peter Speckbacher
  • Patent number: 11481054
    Abstract: A display device including a display panel that includes a display area including pixels and a non-display area around the display area. The display area may include a flat display area and at least one bending display area, and the display panel includes at least one crack detection line disposed in the at least one bending display area.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: October 25, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Min Soo Kim