Patents Examined by Bac H. Au
  • Patent number: 11640936
    Abstract: A semiconductor structure and the manufacturing method thereof are disclosed. An exemplary semiconductor structure includes a first source/drain contact and a second source/drain contact spaced apart by a gate structure, an etch stop layer (ESL) over the first source/drain contact and the second source/drain contact, a conductive feature disposed in the etch stop layer and in direct contact with the first source/drain contact and the second source/drain contact, a dielectric layer over the etch stop layer, and a contact via extending through the dielectric layer and electrically connected to the conductive feature. By providing the conductive feature, a number of metal lines in an interconnect structure of the semiconductor structure may be advantageously reduced.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: May 2, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chao-Hsun Wang, Wang-Jung Hsueh, Fu-Kai Yang, Mei-Yun Wang, Sheng-Hsiung Wang, Shih-Hsien Huang
  • Patent number: 11640971
    Abstract: A deep trench is formed in a substrate, and a layer stack including at least three metallic electrode plates interlaced with at least two node dielectric layers is formed in, and over, the deep trench. A contact-level dielectric material layer over the layer stack, and contact via cavities are formed therethrough. The depths of the contact via cavities are differentiated by selectively increasing the depth of a respective subset of the contact via cavities by performing at least twice a combination of processing steps that includes an etch mask formation process and an etch process. A combination of a dielectric contact via liner and a plate contact via structure can be formed within each of the contact via cavities. Plate contact via structures that extend through any metallic electrode plate can be electrically isolated from such a metallic electrode plate by a respective dielectric contact via liner.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: May 2, 2023
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ming Chyi Liu, Yu-Hsing Chang, Shih-Chang Liu
  • Patent number: 11640950
    Abstract: A semiconductor chip includes; an intermetal dielectric (IMD) layer on a substrate, an uppermost insulation layer on the IMD layer, the uppermost insulation layer having a dielectric constant different from a dielectric constant of the IMD layer, a metal wiring in the IMD layer, the metal wiring including a via contact and a metal pattern, a metal pad in the uppermost insulation layer, the metal pad being electrically connected to the metal wiring, and a bump pad on the metal pad. An interface portion between the IMD layer and the uppermost insulation layer is disposed at a height of a portion between an upper surface and a lower surface of an uppermost metal pattern in the IMD layer.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: May 2, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byungwook Kim, Ahram Kang, Seongwon Jeong
  • Patent number: 11637062
    Abstract: The present disclosure provides an interconnect structure and a method for forming an interconnect structure. The method for forming an interconnect structure includes forming a first interlayer dielectric (ILD) layer over a substrate, forming a contact in the first ILD layer, forming a second ILD layer over the first ILD layer, forming a first opening in the second ILD layer and obtaining an exposed side surface of the second ILD layer over the contact, forming a densified dielectric layer at the exposed side surface of the second ILD layer, including oxidizing the exposed side surface of the second ILD layer by irradiating a microwave on the second ILD layer, and forming a via in contact with the densified dielectric layer.
    Type: Grant
    Filed: February 21, 2022
    Date of Patent: April 25, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Khaderbad Mrunal Abhijith, Yu-Yun Peng, Fu-Ting Yen, Chen-Han Wang, Tsu-Hsiu Perng, Keng-Chu Lin
  • Patent number: 11631617
    Abstract: Scalable device designs for FINFET technology are provided. In one aspect, a method of forming a FINFET device includes: patterning fins in a substrate which include a first fin(s) corresponding to a first FINFET device and a second fin(s) corresponding to a second FINFET device; depositing a conformal gate dielectric over the fins; depositing a conformal sacrificial layer over the gate dielectric; depositing a sacrificial gate material over the sacrificial layer; replacing the sacrificial layer with a first workfunction-setting metal(s) over the first fin(s) and a second workfunction-setting metal(s) over the second fin(s); removing the sacrificial gate material; forming dielectric gates over the first workfunction-setting metal(s), the second workfunction-setting metal(s) and the gate dielectric forming gate stacks; and forming source and drains in the fins between the gate stacks, wherein the source and drains are separated from the gate stacks by inner spacers. A FINFET device is also provided.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: April 18, 2023
    Assignee: International Business Machines Corporation
    Inventors: Ruilong Xie, Kangguo Cheng, Juntao Li, Chanro Park
  • Patent number: 11631640
    Abstract: The present disclosure describes a method for forming a barrier structure between liner-free conductive structures and underlying conductive structures. The method includes forming openings in a dielectric layer disposed on a contact layer, where the openings expose conductive structures in the contact layer. A first metal layer is deposited in the openings and is grown thicker on top surfaces of the conductive structures and thinner on sidewall surfaces of the openings. The method further includes exposing the first metal layer to ammonia to form a bilayer with the first metal layer and a nitride of the first metal layer, and subsequently exposing the nitride to an oxygen plasma to convert a portion of the nitride of the first metal layer to an oxide layer. The method also includes removing the oxide layer and forming a semiconductor-containing layer on the nitride of the first metal layer.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: April 18, 2023
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Yen-Yu Chen, Chung-Liang Cheng
  • Patent number: 11631646
    Abstract: A method for producing a plurality of chips each comprising an individualisation region, each chip comprising at least: a first and a second level of the electrical tracks, and an interconnections level comprising vias. The method includes producing on the dielectric layer covering the first level a mask having openings located in line with the electrical tracks and making the dielectric layer accessible. The method includes producing, in a region of the chip comprising the individualisation region, patterns conformed so that: first openings of the hard mask are not masked by the patterns, and second openings of the hard mask are masked by the patterns. The method includes producing via openings in the dielectric layer in line solely with the first openings. The method further includes filling in the via openings with an electrically conductive material, and producing the second level of the electrical tracks on the vias.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: April 18, 2023
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Stefan Landis, Michaël May
  • Patent number: 11610813
    Abstract: An interconnection element of an interconnection structure of an integrated circuit is manufactures by a method where a cavity is etched in an insulating layer. A silicon nitride layer is then deposited on walls and a bottom of the cavity. The nitrogen atom concentration in the silicon nitride layer increasing as a distance from an exposed surface of the silicon nitride layer increases. A copper layer is deposited on the silicon nitride layer. The cavity is further filled with copper. A heating process is performed after the deposition of the copper layer, to convert the copper layer and the silicon nitride layer to form a copper silicide layer which has a nitrogen atom concentration gradient corresponding to the gradient of the silicon nitride layer.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: March 21, 2023
    Assignee: STMicroelectronics (Crolles 2) SAS
    Inventor: Magali Gregoire
  • Patent number: 11600574
    Abstract: A method includes encapsulating a device die in an encapsulating material, planarizing the device die and the encapsulating material, and forming a first plurality of conductive features electrically coupling to the device die. The step of forming the first plurality of conductive features includes a deposition-and-etching process, which includes depositing a blanket copper-containing layer, forming a patterned photo resist over the blanket copper-containing layer, and etching the blanket copper-containing layer to transfer patterns of the patterned photo resist into the blanket copper-containing layer.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: March 7, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hung-Jui Kuo, Yun Chen Hsieh, Hui-Jung Tsai, Chen-Hua Yu
  • Patent number: 11594536
    Abstract: Some embodiments include an integrated assembly having a CMOS region with fins extending along a first direction, and with gating structures extending across the fins. A circuit arrangement is associated with the CMOS region and includes a pair of the gating structures spaced by an intervening region having a missing gating structure. The circuit arrangement has a first dimension along the first direction. A second region is proximate to the CMOS region. Conductive structures are associated with the second region. Some of the conductive structures are electrically coupled with the circuit arrangement. A second dimension is a distance across said some of the conductive structures along the first direction. The conductive structures and the circuit arrangement are aligned such that the second dimension is substantially the same as the first dimension. Some embodiments include methods of forming integrated assemblies.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: February 28, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Yong Mo Yang, Mohd Kamran Akhtar, Huyong Lee, Sangmin Hwang, Song Guo
  • Patent number: 11569368
    Abstract: A method for making a semiconductor device may include forming shallow trench isolation (STI) regions in a semiconductor substrate defining an active region therebetween in the semiconductor substrate and a pad oxide on the active region. The method may further include removing at least some of the pad oxide, cleaning the active region to expose an upper surface thereof and define rounded shoulders of the active region adjacent the STI regions having an interior angle of at least 125°, and forming a superlattice on the active region. The superlattice may include a plurality of stacked groups of layers, each group of layers including a plurality of stacked base semiconductor monolayers defining a base semiconductor portion, and at least one non-semiconductor monolayer constrained within a crystal lattice of adjacent base semiconductor portions. The method may further include forming a semiconductor circuit including the superlattice.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: January 31, 2023
    Assignee: ATOMERA INCORPORATED
    Inventors: Hideki Takeuchi, Yung-Hsuan Yang
  • Patent number: 11569386
    Abstract: A semiconductor device structure is provided. The semiconductor device structure includes a first fin structure and a second fin structure extended above a substrate, and a first source/drain structure formed over the first fin structure. The first source/drain structure is made of an N-type conductivity material. The semiconductor device structure also includes a second source/drain structure formed over the second fin structure, and the second source/drain structure is made of an P-type conductivity material. The semiconductor device structure also includes a cap layer formed over the first source/drain structure, wherein the cap layer is made of P-type conductivity material.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: January 31, 2023
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Feng-Ching Chu, Wei-Yang Lee, Feng-Cheng Yang, Yen-Ming Chen
  • Patent number: 11569236
    Abstract: A method of forming a semiconductor device includes etching a substrate to form two first trenches separated by a fin; filling the two first trenches with an isolation layer; and depositing a dielectric layer over the fin and the isolation layer. The method further includes forming a second trench in the dielectric layer over a channel region of the semiconductor device, the second trench exposing the isolation layer. The method further includes etching the isolation layer through the second trench to expose an upper portion of the fin in the channel region of the semiconductor device, and forming a dummy gate in the second trench over the isolation layer and engaging the upper portion of the fin.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: January 31, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hung-Li Chiang, Cheng-Yi Peng, Tsung-Yao Wen, Yee-Chia Yeo, Yen-Ming Chen
  • Patent number: 11557658
    Abstract: Transistors having a plurality of channel semiconductor structures, such as fins, over a dielectric material. A source and drain are coupled to opposite ends of the structures and a gate stack intersects the plurality of structures between the source and drain. Lateral epitaxial overgrowth (LEO) may be employed to form a super-lattice of a desired periodicity from a sidewall of a fin template structure that is within a trench and extends from the dielectric material. Following LEO, the super-lattice structure may be planarized with surrounding dielectric material to expose a top of the super-lattice layers. Alternating ones of the super-lattice layers may then be selectively etched away, with the retained layers of the super-lattice then laterally separated from each other by a distance that is a function of the super-lattice periodicity. A gate dielectric and a gate electrode may be formed over the retained super-lattice layers for a channel of a transistor.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: January 17, 2023
    Assignee: Intel Corporation
    Inventors: Gilbert Dewey, Sean T. Ma, Tahir Ghani, Willy Rachmady, Cheng-Ying Huang, Anand S. Murthy, Harold W. Kennel, Nicholas G. Minutillo, Matthew V. Metz
  • Patent number: 11557694
    Abstract: A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; a current blocking layer disposed on the first surface, including a sidewall; and a transparent conductive layer disposed on the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a retract distance of the transparent conductive layer with respect to an edge of the mesa structure is less than 3 ?m; and wherein a retract distance of the transparent conductive layer with respect to an edge of the sidewall of the current blocking layer is less than 3 ?m.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: January 17, 2023
    Assignee: EPISTAR CORPORATION
    Inventors: Chien Cheng Huang, Kuo-Wei Yen, Yu-Wei Kuo, Yao-Wei Yang, Pei-Hsiang Tseng
  • Patent number: 11552168
    Abstract: A lateral transistor tile is formed with first and second collector regions that longitudinally span first and second sides of the transistor tile; and a base region and an emitter region that are between the first and second collector regions and are both centered on a longitudinal midline of the transistor tile. A base-collector current, a collector-emitter current, and a base-emitter current flow horizontally; and the direction of the base-emitter current is perpendicular to the direction of the base-collector current and the collector-emitter current. Lateral BJT transistors having a variety of layouts are formed from a plurality of the tiles and share common components thereof.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: January 10, 2023
    Assignee: Silanna Asia Pte Ltd
    Inventors: Vadim Kushner, Nima Beikae
  • Patent number: 11538913
    Abstract: A semiconductor device is disclosed. The semiconductor device may include a substrate including a first active pattern, the first active pattern vertically protruding from a top surface of the substrate, a first source/drain pattern filling a first recess, which is formed in an upper portion of the first active pattern, a first metal silicide layer on the first source/drain pattern, the first metal silicide layer including a first portion and a second portion, which are located on a first surface of the first source/drain pattern, and a first contact in contact with the second portion of the first metal silicide layer. A thickness of the first portion may be different from a thickness of the second portion.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: December 27, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Inchan Hwang, Heonjong Shin, Sunghun Jung, Doohyun Lee, Hwichan Jun, Hakyoon Ahn
  • Patent number: 11532552
    Abstract: A first layer is located over a substrate. The first layer includes a first dielectric component and a first conductive component. A first etching stop layer is located over the first dielectric component. A metal capping layer is located over the first conductive component. A second etching stop layer is located over the first etching stop layer and over the metal capping layer. A second layer is located over the second etching stop layer. The second layer includes a second dielectric component and a second conductive component. A third conductive component electrically interconnects the second conductive component to the first conductive component.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: December 20, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yung-Hsu Wu, Hai-Ching Chen, Jung-Hsun Tsai, Shau-Lin Shue, Tien-I Bao
  • Patent number: 11527430
    Abstract: A method for shallow trench isolation structures in a semiconductor device and a semiconductor device including the shallow trench isolation structures are disclosed. In an embodiment, the method may include forming a trench in a substrate; depositing a first dielectric liner in the trench; depositing a first shallow trench isolation (STI) material over the first dielectric liner, the first STI material being deposited as a conformal layer; etching the first STI material; depositing a second STI material over the first STI material, the second STI material being deposited as a flowable material; and planarizing the second STI material such that top surfaces of the second STI material are co-planar with top surfaces of the substrate.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: December 13, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shiang-Bau Wang, Chun-Hung Lee
  • Patent number: 11515165
    Abstract: In an embodiment, a structure includes: a contact etch stop layer (CESL) over a substrate; a fin extending through the CESL; an epitaxial source/drain region in the fin, the epitaxial source/drain region extending through the CESL; a silicide contacting upper facets of the epitaxial source/drain region; a source/drain contact contacting the silicide, lower facets of the epitaxial source/drain region, and a first surface of the CESL; and an inter-layer dielectric (ILD) layer surrounding the source/drain contact, the ILD layer contacting the first surface of the CESL.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: November 29, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Yu-Lien Huang, Guan-Ren Wang, Ching-Feng Fu