Patents by Inventor Cheng-Yu Liu

Cheng-Yu Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240178631
    Abstract: A laser diode includes an original substrate having a substrate coefficient of thermal expansion, an epitaxy structure formed on the original substrate, and a composite multi-layer metal board disposed below the original substrate and at least including a first metal layer and a second metal layer. The first metal layer and the second metal layer are stacked, a material of the first metal layer is different from a material of the second metal layer, and the composite multi-layer metal board has a modified coefficient of thermal expansion. The original substrate has an initial thickness as the epitaxy structure is grown thereon, the original substrate is thinned to a combining thickness for attaching the composite multi-layer metal board, and the modified coefficient of thermal expansion of the composite multi-layer metal board is proximate to the substrate coefficient of thermal expansion.
    Type: Application
    Filed: May 26, 2023
    Publication date: May 30, 2024
    Inventors: Ai-Sen LIU, Hsiang-An FENG, Cheng-Yu CHUNG, Ya-Li CHEN
  • Publication number: 20240177893
    Abstract: An over-current protection device includes a heat-sensitive layer and an electrode layer. The electrode layer includes a top metal layer and a bottom metal layer, and the heat-sensitive layer attached therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a conductive filler. The polymer matrix includes a polyolefin-based homopolymer and a polyolefin-based copolymer. The polyolefin-based homopolymer has a first coefficient of thermal expansion (CTE), and the polyolefin-based copolymer has a second CTE lower than the first CTE. The polyolefin-based homopolymer and the polyolefin-based copolymer together form an interpenetrating polymer network (IPN).
    Type: Application
    Filed: May 3, 2023
    Publication date: May 30, 2024
    Inventors: CHENG-YU TUNG, Chia-Yuan Lee, HSIU-CHE YEN, CHEN-NAN LIU, YUNG-HSIEN CHANG, Yao-Te Chang, FU-HUA CHU, Takashi Hasunuma
  • Patent number: 11990258
    Abstract: An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, a conductive filler, and a titanium-containing dielectric filler. The polymer matrix has a fluoropolymer. The titanium-containing dielectric filler has a compound represented by a general formula of MTiO3, wherein the M represents transition metal or alkaline earth metal. The total volume of the PTC material layer is calculated as 100%, and the titanium-containing dielectric filler accounts to for 5-15% by volume of the PTC material layer.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: May 21, 2024
    Assignee: POLYTRONICS TECHNOLOGY CORP.
    Inventors: Hsiu-Che Yen, Yung-Hsien Chang, Cheng-Yu Tung, Chen-Nan Liu, Chia-Yuan Lee, Yu-Chieh Fu, Yao-Te Chang, Fu-Hua Chu
  • Publication number: 20240161998
    Abstract: A deflecting plate includes a silicon-on-insulator (SOI) substrate. The SOI substrate includes: an insulator layer having a top surface and a bottom surface; a device layer coupled to the insulator layer at the top surface, wherein multiple deflecting apertures are disposed in the device layer, each of which extending from a top open end to a bottom open end through the device layer, and wherein the bottom open end is coplanar with the top surface of the insulator layer; and a handle substrate coupled to the insulator layer at the bottom surface, wherein a cavity is disposed in the handle substrate and extends from a cavity open end to a cavity bottom wall, and wherein the bottom wall is coplanar with the top surface of the insulator layer, such that the bottom open end of each deflecting aperture is exposed to the cavity.
    Type: Application
    Filed: September 10, 2023
    Publication date: May 16, 2024
    Inventors: Cheng-Hsien Chou, Yung-Lung Lin, Chun Liang Chen, Kuan-Liang Liu, Chin-Yu Ku, Jong-Yuh Chang
  • Patent number: 11984419
    Abstract: Package structures and methods for manufacturing the same are provided. The package structure includes a first bump structure formed over a first substrate. The first bump structure includes a first pillar layer formed over the first substrate and a first barrier layer formed over the first pillar layer. In addition, the first barrier layer has a first protruding portion laterally extending outside a first edge of the first pillar layer. The package structure further includes a second bump structure bonded to the first bump structure through a solder joint. In addition, the second bump structure includes a second pillar layer formed over a second substrate and a second barrier layer formed over the second pillar layer. The first protruding portion of the first barrier layer is spaced apart from the solder joint.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: May 14, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Cheng-Hung Chen, Yu-Nu Hsu, Chun-Chen Liu, Heng-Chi Huang, Chien-Chen Li, Shih-Yen Chen, Cheng-Nan Hsieh, Kuo-Chio Liu, Chen-Shien Chen, Chin-Yu Ku, Te-Hsun Pang, Yuan-Feng Wu, Sen-Chi Chiang
  • Publication number: 20240145133
    Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a polymer matrix and a first conductive filler. The polymer matrix includes a polyolefin-based polymer and a fluoropolymer. The fluoropolymer has a melt flow index higher than 1.9 g/10 min, and the polyolefin-based polymer and the fluoropolymer together form an interpenetrating polymer network (IPN). The first conductive filler has a metal-ceramic compound dispersed in the polymer matrix.
    Type: Application
    Filed: April 5, 2023
    Publication date: May 2, 2024
    Inventors: CHEN-NAN LIU, YUNG-HSIEN CHANG, CHENG-YU TUNG, HSIU-CHE YEN, Chia-Yuan LEE, Yao-Te CHANG, FU-HUA CHU
  • Publication number: 20240145596
    Abstract: A device includes a fin extending from a semiconductor substrate; a gate stack over the fin; a first spacer on a sidewall of the gate stack; a source/drain region in the fin adjacent the first spacer; an inter-layer dielectric layer (ILD) extending over the gate stack, the first spacer, and the source/drain region, the ILD having a first portion and a second portion, wherein the second portion of the ILD is closer to the gate stack than the first portion of the ILD; a contact plug extending through the ILD and contacting the source/drain region; a second spacer on a sidewall of the contact plug; and an air gap between the first spacer and the second spacer, wherein the first portion of the ILD extends across the air gap and physically contacts the second spacer, wherein the first portion of the ILD seals the air gap.
    Type: Application
    Filed: January 2, 2024
    Publication date: May 2, 2024
    Inventors: Su-Hao Liu, Kuo-Ju Chen, Kai-Hsuan Lee, I-Hsieh Wong, Cheng-Yu Yang, Liang-Yin Chen, Huicheng Chang, Yee-Chia Yeo, Syun-Ming Jang, Meng-Han Chou
  • Publication number: 20240145132
    Abstract: An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, and a conductive filler. The polymer matrix has a fluoropolymer. The total volume of the PTC material layer is calculated as 100%, and the fluoropolymer accounts for 47-62% by volume of the PTC material layer. The fluoropolymer has a melt viscosity higher than 3000 Pa·s.
    Type: Application
    Filed: March 16, 2023
    Publication date: May 2, 2024
    Inventors: CHENG-YU TUNG, CHEN-NAN LIU, Chia-Yuan Lee, HSIU-CHE YEN, YUNG-HSIEN CHANG, Yao-Te Chang, FU-HUA CHU
  • Publication number: 20240127989
    Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 33% to 42%.
    Type: Application
    Filed: January 25, 2023
    Publication date: April 18, 2024
    Inventors: CHIA-YUAN LEE, CHENG-YU TUNG, HSIU-CHE YEN, CHEN-NAN LIU, YUNG-HSIEN CHANG, YAO-TE CHANG, FU-HUA CHU
  • Publication number: 20240127988
    Abstract: An over-current protection device includes a first metal layer, a second metal layer and a heat-sensitive layer laminated therebetween. The heat-sensitive layer exhibits a positive temperature coefficient (PTC) characteristic and includes a first polymer and a conductive filler. The first polymer consists of polyvinylidene difluoride (PVDF), and PVDF exists in different phases such as ?-PVDF, ?-PVDF and ?-PVDF. The total amount of ?-PVDF, ?-PVDF and ?-PVDF is calculated as 100%, and the amount of ?-PVDF accounts for 48% to 55%. The conductive filler has a metal-ceramic compound.
    Type: Application
    Filed: March 2, 2023
    Publication date: April 18, 2024
    Inventors: HSIU-CHE YEN, YUNG-HSIEN CHANG, CHENG-YU TUNG, Chia-Yuan Lee, CHEN-NAN LIU, Yao-Te Chang, FU-HUA CHU
  • Patent number: 11955329
    Abstract: A method of forming a semiconductor device includes forming a first conductive feature on a bottom surface of an opening through a dielectric layer. The forming the first conductive feature leaves seeds on sidewalls of the opening. A treatment process is performed on the seeds to form treated seeds. The treated seeds are removed with a cleaning process. The cleaning process may include a rinse with deionized water. A second conductive feature is formed to fill the opening.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: April 9, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Cheng-Wei Chang, Min-Hsiu Hung, Chun-I Tsai, Ken-Yu Chang, Yi-Ying Liu
  • Patent number: 11939268
    Abstract: A method of forming low-k material is provided. The method includes providing a plurality of core-shell particles. The core of the core-shell particles has a first ceramic with a low melting point. The shell of the core-shell particles has a second ceramic with a low melting point and a low dielectric constant. The core-shell particles are sintered and molded to form a low-k material. The shell of the core-shell particles is connected to form a network structure of a microcrystal phase.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: March 26, 2024
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kuo-Chuang Chiu, Tzu-Yu Liu, Tien-Heng Huang, Tzu-Chi Chou, Cheng-Ting Lin
  • Publication number: 20240019486
    Abstract: A method includes forming a reconstructed wafer, which includes placing a plurality of package components over a carrier, forming an interconnect structure over and electrically interconnecting the plurality of package components, forming top electrical connectors over and electrically connecting to the interconnect structure, and forming alignment marks at a same level as the top electrical connectors. Probe pads in the top electrical connectors are probed, and the probing is performed using the alignment marks for aligning to the probe pads. An additional package component is bonded to the reconstructed wafer through solder regions. The solder regions are physically joined to the top electrical connectors.
    Type: Application
    Filed: January 9, 2023
    Publication date: January 18, 2024
    Inventors: Cheng-Chieh Wu, Kuo-Lung Pan, Shu-Rong Chun, Hao-Yi Tsai, Po-Yuan Teng, Mao-Yen Chang, Cheng Yu Liu, Chia-Wen Lin
  • Patent number: 11582504
    Abstract: The present invention discloses a signal output circuit applying bandwidth broadening mechanism for an image signal transmission apparatus that includes a first driving circuit and a second driving circuit. The first driving circuit includes a continuous time linear equalizer (CTLE) and is configured to receive a digital input signal to perform a high frequency enhancement thereon to increase a bandwidth of the digital input signal to generate a first output signal, in which a zero point and two poles of a frequency response of the first driving circuit are determined by circuit parameters thereof. The second driving circuit is configured to receive and amplify the first output signal to generate a second output signal for an image receiving apparatus.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: February 14, 2023
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Tsung-Ming Chen, Cheng-Yu Liu
  • Publication number: 20220272401
    Abstract: The present invention discloses a signal output circuit applying bandwidth broadening mechanism for an image signal transmission apparatus that includes a first driving circuit and a second driving circuit. The first driving circuit includes a continuous time linear equalizer (CTLE) and is configured to receive a digital input signal to perform a high frequency enhancement thereon to increase a bandwidth of the digital input signal to generate a first output signal, in which a zero point and two poles of a frequency response of the first driving circuit are determined by circuit parameters thereof. The second driving circuit is configured to receive and amplify the first output signal to generate a second output signal for an image receiving apparatus.
    Type: Application
    Filed: February 18, 2022
    Publication date: August 25, 2022
    Inventors: TSUNG-MING CHEN, CHENG-YU LIU
  • Patent number: 11251701
    Abstract: A high voltage tolerant output circuit includes a boost circuit, a first bias circuit, and a buffer circuit. The boost circuit includes a first transistor and an output node. A first terminal of the first transistor is coupled with the output node. The first bias circuit is coupled with the output node and a control terminal of the first transistor, and for dividing the output voltage of the output node. The first bias circuit is further configured to transmit the divided output voltage to the control terminal of the first transistor. The buffer circuit is coupled with a second terminal of the first transistor, and for setting a first voltage of the second terminal of the first transistor. The output voltage is positive correlated to the first voltage, and a maximum value of the output voltage is higher than or equal to a maximum value of the first voltage.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: February 15, 2022
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Chun-I Kuo, Yi-Jang Wu, Chun-Ta Ho, Cheng-Yu Liu
  • Patent number: 11223363
    Abstract: Disclosed is an open loop fractional frequency divider including an integer divider, a control circuit, and a phase interpolator. The integer divider processes an input clock according to the setting of a target frequency to generate a first frequency-divided clock and a second frequency-divided clock. The control circuit generates a coarse-tune control signal and a fine-tune control signal according to the setting. The phase interpolator generates an output clock according to the first frequency-divided clock, the second frequency-divided clock, and the two control signals. The two control signals are used for determining a first current, and their reversed signals are used for determining a second current. The phase interpolator controls a contribution of the first (second) frequency-divided clock to the generation of the output clock according to the first (second) frequency-divided clock, the reversed signal of the first (second) frequency-divided clock, and the first (second) current.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: January 11, 2022
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Shawn Min, Yi-Jang Wu, Tsung-Ming Chen, Chieh-Yuan Hsu, Cheng-Yu Liu
  • Publication number: 20210376842
    Abstract: Disclosed is an open loop fractional frequency divider including an integer divider, a control circuit, and a phase interpolator. The integer divider processes an input clock according to the setting of a target frequency to generate a first frequency-divided clock and a second frequency-divided clock. The control circuit generates a coarse-tune control signal and a fine-tune control signal according to the setting. The phase interpolator generates an output clock according to the first frequency-divided clock, the second frequency-divided clock, and the two control signals. The two control signals are used for determining a first current, and their reversed signals are used for determining a second current. The phase interpolator controls a contribution of the first (second) frequency-divided clock to the generation of the output clock according to the first (second) frequency-divided clock, the reversed signal of the first (second) frequency-divided clock, and the first (second) current.
    Type: Application
    Filed: May 21, 2021
    Publication date: December 2, 2021
    Inventors: SHAWN MIN, YI-JANG WU, TSUNG-MING CHEN, CHIEH-YUAN HSU, CHENG-YU LIU
  • Publication number: 20210265910
    Abstract: A high voltage tolerant output circuit includes a boost circuit, a first bias circuit, and a buffer circuit. The boost circuit includes a first transistor and an output node. A first terminal of the first transistor is coupled with the output node. The first bias circuit is coupled with the output node and a control terminal of the first transistor, and for dividing the output voltage of the output node. The first bias circuit is further configured to transmit the divided output voltage to the control terminal of the first transistor. The buffer circuit is coupled with a second terminal of the first transistor, and for setting a first voltage of the second terminal of the first transistor. The output voltage is positive correlated to the first voltage, and a maximum value of the output voltage is higher than or equal to a maximum value of the first voltage.
    Type: Application
    Filed: February 24, 2021
    Publication date: August 26, 2021
    Inventors: Chun-I Kuo, Yi-Jang Wu, Chun-Ta Ho, Cheng-Yu Liu
  • Patent number: 11082200
    Abstract: A clock and data recovery apparatus is provided that includes a sampling circuit, a storage circuit and a determining circuit. The sampling circuit includes sampling units each sampling a received data according to one of reference clock signals to generate a sampling result. The storage circuit includes FIFO storage units configured to store the sampling result of the received data corresponding to different time spots. The determining circuit is configured to set a certain number of received data as a reference data pattern, to adjust a starting position of a sampling window according to a transition point of sampled values within the reference data pattern when only one data transition exists therein and adjust a length of the sampling window according to an amount of high state sample points of the sampled values within the reference data pattern when more than one data transitions exist therein.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: August 3, 2021
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Chieh-Shiung Chang, Chia-Jung Chang, Yu-An Chang, Cheng-Yu Liu