Patents by Inventor Chun-Chi Yu

Chun-Chi Yu 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: 20240145404
    Abstract: A chip package with electromagnetic interference (EMI) shielding layer and a method of manufacturing the same are provided. The chip package includes a chip, a redistribution layer (RDL), an insulating layer, and an electromagnetic interference (EMI) shielding layer. A peripheral wall is formed around at least one first opening of the insulating layer for enclosing the first opening and a flat portion is disposed around the peripheral wall while a level of the flat portion is lower than a level of the peripheral wall. The flat portion of the insulating layer is covered with the EMI shielding layer which is isolated and electrically insulated from a pad in the first opening by the peripheral wall of the insulating layer. Thereby problems of the chip including fast increase in temperature and electromagnetic interference can be solved effectively.
    Type: Application
    Filed: September 8, 2023
    Publication date: May 2, 2024
    Inventors: HONG-CHI YU, CHUN-JUNG LIN, RUEI-TING GU
  • Publication number: 20240135999
    Abstract: The present disclosure discloses a memory access interface device. A clock generation circuit generates reference clock signals. Each of access signal transmission circuits each includes a duty cycle adjusting circuit, a duty cycle detection circuit, a frequency division circuit and an asynchronous first-in-first-out circuit. The duty cycle adjusting circuit performs duty cycle adjustment on one of the reference clock signals according to a duty cycle detection signal to generate an output clock signal having a duty cycle. The duty cycle detection circuit detects a variation of the duty cycle to generate the duty cycle detection signal. The frequency division circuit divides a frequency of the output clock signal to generate a read clock signal. The asynchronous first-in-first-out circuit receives an access signal from a memory access controller and outputs an output access signal according to the read clock signal to access the memory device accordingly.
    Type: Application
    Filed: October 24, 2022
    Publication date: April 25, 2024
    Inventors: FU-CHIN TSAI, GER-CHIH CHOU, CHUN-CHI YU, CHIH-WEI CHANG
  • Publication number: 20240134410
    Abstract: The present disclosure discloses a memory access interface device. A clock generation circuit generates reference signals. A transmitter transmits an output command and address signal to a memory device according to the reference signals. A signal training circuit executes a training process in a training mode that includes steps outlined below. A training signal is generated such that the training signal is transmitted as the output command and address signal. The training signal and the data signal generated by the memory device are compared to generate a comparison result indicating whether the data signal matches the training signal. The comparison result is stored. The clock generation circuit is controlled to modify a phase of at least one of the reference signals to be one of a plurality of under-test phases to execute a new loop of the training process until all the under-test phases are trained.
    Type: Application
    Filed: October 24, 2022
    Publication date: April 25, 2024
    Inventors: FU-CHIN TSAI, GER-CHIH CHOU, CHUN-CHI YU, CHIH-WEI CHANG, MIN-HAN TSAI
  • Publication number: 20240120300
    Abstract: A chip package which includes a glass fiber substrate made of FR-4 fiberglass is provided. The chip package further includes a substrate pad which is a stacked metal structure with a certain thickness and composed of a nickel layer, a palladium layer, and a gold layer, or a nickel layer and a gold layer stacked over at least one first circuit layer in turn. A total thickness of the substrate pad is 3.15-5.4 ?m. The glass fiber substrate and the substrate pad can bear positive pressure generated during wire bonding. Thereby at least one solder joint is formed on the substrate pad precisely and integrally. This helps reduction in material cost for manufacturers.
    Type: Application
    Filed: September 8, 2023
    Publication date: April 11, 2024
    Inventors: HONG-CHI YU, CHUN-JUNG LIN, RUEI-TING GU
  • Patent number: 11955515
    Abstract: A semiconductor device with dual side source/drain (S/D) contact structures and a method of fabricating the same are disclosed. The method includes forming a fin structure on a substrate, forming a superlattice structure on the fin structure, forming first and second S/D regions within the superlattice structure, forming a gate structure between the first and second S/D regions, forming first and second contact structures on first surfaces of the first and second S/D regions, and forming a third contact structure, on a second surface of the first S/D region, with a work function metal (WFM) silicide layer and a dual metal liner. The second surface is opposite to the first surface of the first S/D region and the WFM silicide layer has a work function value closer to a conduction band energy than a valence band energy of a material of the first S/D region.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: April 9, 2024
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Shih-Chuan Chiu, Chia-Hao Chang, Cheng-Chi Chuang, Chih-Hao Wang, Huan-Chieh Su, Chun-Yuan Chen, Li-Zhen Yu, Yu-Ming Lin
  • Publication number: 20240096758
    Abstract: A chip package having die pads with protective layers is provided. At least one protective layer is covering and arranged at a peripheral zone of at least one die pad for minimizing area of the die pad exposed outside as well as shielding and protecting the peripheral zone of the die pad. A weld zone of the die pad is not covered by the protective layer so that the weld zone of the die pad is exposed. In a crossed-over state, one of bonding wires crossing one of the die pads with a corresponding connection pad of a carrier plate will not get across a second upper space defined by the weld zone of the rest of the die pads. Thereby the one of the bonding wires can be more isolated by the protective layers on the peripheral zones of the rest of the die pads.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 21, 2024
    Inventors: HONG-CHI YU, CHUN-JUNG LIN, RUEI-TING GU
  • Publication number: 20240096996
    Abstract: A semiconductor device includes a first dielectric layer, a stack of semiconductor layers disposed over the first dielectric layer, a gate structure wrapping around each of the semiconductor layers and extending lengthwise along a direction, and a dielectric fin structure and an isolation structure disposed on opposite sides of the stack of semiconductor layers and embedded in the gate structure. The dielectric fin structure has a first width along the direction smaller than a second width of the isolation structure along the direction. The isolation structure includes a second dielectric layer extending through the gate structure and the first dielectric layer, and a third dielectric layer extending through the first dielectric layer and disposed on a bottom surface of the gate structure and a sidewall of the first dielectric layer.
    Type: Application
    Filed: November 28, 2023
    Publication date: March 21, 2024
    Inventors: Huan-Chieh Su, Chun-Yuan Chen, Li-Zhen Yu, Lo-Heng Chang, Cheng-Chi Chuang, Kuan-Lun Cheng, Chih-Hao Wang
  • Publication number: 20240088057
    Abstract: A chip package with at least one electromagnetic interference (EMI) shielding layer and at least one ground wire and a method of manufacturing the same are provided. The chip package includes a chip package unit, at least one EMI shielding layer, and at least one ground wire. The ground wire which consists of a first end and a second end opposite to the first end is inserted through the EMI shielding layer and a first insulating layer of the chip package unit. The first end is electrically connected with the EMI shielding layer while the second end of the ground wire is electrically connected with at least one grounding end of at least one first circuit layer of the chip package unit for protection against static electricity. Thereby malfunction of an electronic system with semiconductor chips due to static electricity can be avoided.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 14, 2024
    Inventors: HONG-CHI YU, CHUN-JUNG LIN, RUEI-TING GU
  • Publication number: 20240013824
    Abstract: The present invention discloses a data transmission apparatus having clock gating mechanism. Each of data transmission circuits has a flip-flop depth of N and receives a write clock signal and one of read clock signals to receive and output one of data signals. A write clock gating circuit receives a write clock gating enabling signal to transmit the write clock signal to the data transmission circuits. Each of read clock gating circuits receives one of read clock gating enabling signals to transmit one of the read clock signals. The gating signal transmission circuit has a flip-flop depth of N+M and receives the write and the read clock signals to receive the write clock gating enabling signal and output the read clock gating enabling signals. A largest timing difference among the read clock signals is P clock cycles and M is at least [P].
    Type: Application
    Filed: July 11, 2022
    Publication date: January 11, 2024
    Inventors: FU-CHIN TSAI, GER-CHIH CHOU, CHUN-CHI YU, CHIH-WEI CHANG, SHIH-HAN LIN
  • Publication number: 20240007208
    Abstract: An eye diagram measuring method includes: sampling a compensated input signal according to a reference voltage and a reference clock to obtain a first sampling result; and sampling a to-be-compensated input signal according to a scan voltage and a scan clock to obtain a second sampling result, including: (b1) storing a minimum phase and a voltage level which render the first sampling result identical to the second sampling result; (b2) increasing the voltage level and repeating operation (b1); (b3) decreasing the voltage level and repeating operation (b1); (b4) storing a maximum phase and the voltage level which render the first sampling result identical to the second sampling result; (b5) increasing the voltage level and repeating operation (b4); and (b6) decreasing the voltage level and repeating operation (b4). Voltage levels, maximum phases and minimum phases that are stored are for adjusting the reference voltage and the reference clock.
    Type: Application
    Filed: October 5, 2022
    Publication date: January 4, 2024
    Inventors: Shih-Chang CHEN, Chih-Wei CHANG, Chun-Chi YU
  • Publication number: 20230402288
    Abstract: A method of removing a step height on a gate structure includes providing a substrate. A gate structure is disposed on the substrate. A dielectric layer covers the gate structure and the substrate. Then, a composite material layer is formed to cover the dielectric layer. Later, part of the composite material layer is removed to form a step height disposed directly on the gate structure. Subsequently, a wet etching is performed to remove the step height. After the step height is removed, the dielectric layer is etched to form a first contact hole to expose the gate structure.
    Type: Application
    Filed: July 4, 2022
    Publication date: December 14, 2023
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Yeh-Sheng Lin, Chang-Mao Wang, Chun-Chi Yu, Chung-Yi Chiu
  • Patent number: 11823770
    Abstract: The present disclosure discloses a memory access interface device. A data processing circuit receives a data signal including 2M pieces of data from a memory device. A sampling clock generation circuit receives a data strobe signal from the memory device to generate a valid data strobe signal having P valid strobe pulses and further generate a sampling clock signal accordingly, in which P is larger than M. A sampling circuit samples the data signal according to the sampling clock signal to generate sampling results. A control circuit determines valid sampling results according to a time difference between the valid data strobe signal and the data signal and outputs valid data generated according to the valid sampling results as a read data signal to a memory access controller.
    Type: Grant
    Filed: May 3, 2022
    Date of Patent: November 21, 2023
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Ger-Chih Chou, Chih-Wei Chang, Li-Jun Gu, Chun-Chi Yu, Fu-Chin Tsai
  • Patent number: 11816352
    Abstract: A processor circuit sends a read request. A clock signal of the processor circuit corresponds to a first counting value. A memory circuit stores data and sends a data strobe signal in response to the read request. The data strobe signal corresponds to a second counting value. The processor circuit includes a selector circuit and a feedback circuit. The selector circuit selects and outputs a flag signal from a plurality of flag control signals according to the second counting value. The feedback circuit generates an enable signal according to a set signal associated with the first counting value, the flag signal associated with the second counting value, and a data strobe gate signal, and generates the data strobe gate signal according to the enable signal and the data strobe signal. The processor circuit reads the data according to the data strobe gate signal.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: November 14, 2023
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Chun-Chi Yu, Chih-Wei Chang, Gerchih Chou
  • Publication number: 20230360683
    Abstract: The present disclosure discloses a memory access interface device. A data processing circuit receives a data signal including 2M pieces of data from a memory device. A sampling clock generation circuit receives a data strobe signal from the memory device to generate a valid data strobe signal having P valid strobe pulses and further generate a sampling clock signal accordingly, in which P is larger than M. A sampling circuit samples the data signal according to the sampling clock signal to generate sampling results. A control circuit determines valid sampling results according to a time difference between the valid data strobe signal and the data signal and outputs valid data generated according to the valid sampling results as a read data signal to a memory access controller.
    Type: Application
    Filed: May 3, 2022
    Publication date: November 9, 2023
    Inventors: GER-CHIH CHOU, CHIH-WEI CHANG, LI-JUN GU, CHUN-CHI YU, FU-CHIN TSAI
  • Publication number: 20230307038
    Abstract: A method for calibrating a data reception window includes: (A) setting a level of a reference voltage by different predetermined values and repeatedly sampling a data signal to obtain multiple first valid data reception windows; (B) establishing a first eye diagram based on the first valid data reception windows; (C) resetting the level of the reference voltage by the predetermined values combined with a first offset and repeatedly sampling the data signal according to the reference voltage to obtain multiple second valid data reception windows and (D) selectively updating the first eye diagram according to the second valid data reception windows. When width of a second valid data reception window is greater than width of a first valid data reception window corresponding to the same predetermined value, the first valid data reception window in the first eye diagram is replaced by the second valid data reception window.
    Type: Application
    Filed: March 9, 2023
    Publication date: September 28, 2023
    Applicant: Realtek Semiconductor Corp.
    Inventors: Shih-Chang Chen, Chih-Wei Chang, Chun-Chi Yu
  • Publication number: 20230152714
    Abstract: A method for correcting critical dimension (CD) measurements of a lithographic tool includes steps as follows. A correction pattern having a first sub-pattern parallel to a first direction and a second sub-pattern parallel to a second direction is provided on a lithographic mask; wherein the first sub-pattern and the second sub-pattern come cross with each other. A first After-Develop-Inspection critical dimension (ADI CD) of a developed pattern formed on a photo-sensitive layer and transferred from the correction pattern is measured using the lithographic tool along a first scanning direction. A second ADI CD of the developed pattern is measured using the lithographic tool along a second scanning direction. The first ADI CD is subtracted from the second ADI CD to obtain a measurement bias value. Exposure conditions and/or measuring parameters of the lithographic tool are adjusted according to the measurement bias value.
    Type: Application
    Filed: November 17, 2021
    Publication date: May 18, 2023
    Inventors: Hsin-Yu HSIEH, Kuan-Ying LAI, Chang-Mao WANG, Chien-Hao CHEN, Chun-Chi YU
  • Publication number: 20230154524
    Abstract: Disclosed is a DDR SDRAM signal calibration device capable of adapting to the variation of voltage and/or temperature. The device includes: an enablement signal setting circuit configured to generate data strobe (DQS) enablement setting; a signal gating circuit configured to generate a DQS enablement setting signal and a DQS enablement signal according to the DQS enablement setting and then output a gated DQS signal according to the DQS enablement signal and a DQS signal; and a calibration circuit configured to generate a first delay signal according to the DQS enablement setting signal and generate a second delay signal according to the first delay signal, the calibration circuit further configured to generate a calibration signal according to the first and second delay signals and the DQS signal. The enablement signal setting circuit maintains or adjusts the DQS enablement setting according to the calibration signal.
    Type: Application
    Filed: November 17, 2021
    Publication date: May 18, 2023
    Inventors: KUO-WEI CHI, CHUN-CHI YU, CHIH-WEI CHANG, GER-CHIH CHOU
  • Publication number: 20230126654
    Abstract: A processor circuit sends a read request. A clock signal of the processor circuit corresponds to a first counting value. A memory circuit stores data and sends a data strobe signal in response to the read request. The data strobe signal corresponds to a second counting value. The processor circuit includes a selector circuit and a feedback circuit. The selector circuit selects and outputs a flag signal from a plurality of flag control signals according to the second counting value. The feedback circuit generates an enable signal according to a set signal associated with the first counting value, the flag signal associated with the second counting value, and a data strobe gate signal, and generates the data strobe gate signal according to the enable signal and the data strobe signal. The processor circuit reads the data according to the data strobe gate signal.
    Type: Application
    Filed: October 22, 2021
    Publication date: April 27, 2023
    Inventors: Chun-Chi YU, Chih-Wei CHANG, Gerchih CHOU
  • Publication number: 20230011710
    Abstract: A test method for a delay circuit and a test circuitry are provided. The test circuitry incudes the delay circuit that essentially includes multiple serially connected logic gates, a clock pulse generator at an input end of the delay circuit for generating one or more cycles of clock signals, and a counter at an output end of the delay circuit for counting the clock signals passing through the delay circuit. The test circuitry implements a test mode by switching lines to the clock pulse generator and the counter. The test circuitry relies on a comparison result of a counting result made by the counter and a number of the cycles of the clock signals to test any failure of the delay circuit.
    Type: Application
    Filed: July 8, 2022
    Publication date: January 12, 2023
    Inventors: KUO-WEI CHI, CHUN-CHI YU, CHIH-WEI CHANG
  • Publication number: 20220392768
    Abstract: The embodiments of the disclosure provide a patterning method, which includes the following processes. A target layer is formed on a substrate. A hard mask layer is formed over the target layer. A first patterning process is performed on the hard mask layer by using a photomask having a first pattern with a first pitch. The photomask is shifted along a first direction by a first distance. A second patterning process is performed on the hard mask layer by using the photomask that has been shifted, so as to form a patterned hard mask. The target layer is patterned using the patterned hard mask to form a patterned target layer. The target layer has a second pattern with a second pitch less than the first pitch.
    Type: Application
    Filed: June 7, 2021
    Publication date: December 8, 2022
    Applicant: United Microelectronics Corp.
    Inventors: Yi Jing Wang, Chia-Chang Hsu, Chien-Hao Chen, Chang-Mao Wang, Chun-Chi Yu