Patents by Inventor Yung-Chung Lee

Yung-Chung Lee 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: 20240089645
    Abstract: A headphone includes a headgear and two earmuffs connected to opposite ends of the headgear, and each of the earmuffs includes an adjustment assembly. The adjustment assembly includes a base, two elastic members, two protrusions, and two sliding blocks. The base has two opposite accommodating parts and two guiding grooves. The elastic members are disposed in the accommodating parts, respectively, and the elastic members extend along a first axial direction. The protrusions are slidably connected to the guiding grooves, respectively, and protrude into the accommodating parts. The sliding blocks are disposed in the accommodating parts, respectively, and each of the sliding blocks is respectively connected between the corresponding protrusion and the corresponding elastic member.
    Type: Application
    Filed: October 19, 2022
    Publication date: March 14, 2024
    Applicant: Merry Electronics(Shenzhen) Co., Ltd.
    Inventors: Wen-Chung Lee, Yung-Lung Tsai, Hung-Wen Tsao
  • Publication number: 20210091126
    Abstract: There is provided a structure to improve BSI global shutter efficiency. In a sensor pixel circuit, at least one strong electric field is formed at the position of a floating diffusion region to accordingly have the effect of shielding the floating diffusion region. Or, the semiconductor material from the floating diffusion node toward a light incident direction is removed in the manufacturing process such that a depletion region cannot be formed in this direction. Or, a reflection layer or a photoresist layer is formed in the light incident direction to block the light. In these ways, charges generated by the undesired noises are reduced, and noise charges are difficult to reach the floating diffusion region thereby improving the shutter efficiency.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Inventors: Kai-Chieh CHUANG, Yung-Chung LEE, Yen-Min CHANG
  • Patent number: 10930698
    Abstract: There is provided a structure to improve BSI global shutter efficiency. In a sensor pixel circuit, at least one strong electric field is formed at the position of a floating diffusion region to accordingly have the effect of shielding the floating diffusion region. Or, the semiconductor material from the floating diffusion node toward a light incident direction is removed in the manufacturing process such that a depletion region cannot be formed in this direction. Or, a reflection layer or a photoresist layer is formed in the light incident direction to block the light. In these ways, charges generated by the undesired noises are reduced, and noise charges are difficult to reach the floating diffusion region thereby improving the shutter efficiency.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: February 23, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Kai-Chieh Chuang, Yung-Chung Lee, Yen-Min Chang
  • Publication number: 20190363115
    Abstract: There is provided a structure to improve BSI global shutter efficiency. In a sensor pixel circuit, at least one strong electric field is formed at the position of a floating diffusion region to accordingly have the effect of shielding the floating diffusion region. Or, the semiconductor material from the floating diffusion node toward a light incident direction is removed in the manufacturing process such that a depletion region cannot be formed in this direction. Or, a reflection layer or a photoresist layer is formed in the light incident direction to block the light. In these ways, charges generated by the undesired noises are reduced, and noise charges are difficult to reach the floating diffusion region thereby improving the shutter efficiency.
    Type: Application
    Filed: April 15, 2019
    Publication date: November 28, 2019
    Inventors: Kai-Chieh CHUANG, Yung-Chung LEE, Yen-Min CHANG
  • Publication number: 20180115731
    Abstract: The present invention provides a global shutter high dynamic range pixel and a global shutter high dynamic range image sensor. The global shutter high dynamic range pixel includes: a photoelectric transducer unit, a floating node, a first charge transfer unit, a second charge transfer unit and a pixel signal output unit. The first charge transfer unit includes a Metal-Oxide-Semiconductor (MOS) capacitor. The MOS capacitor is configured to operably accumulate at least a portion of the charges transferred from the photoelectric transducer unit. The MOS capacitor is turned ON or OFF according to a control signal, thereby forming a gate-induced potential well internally within the MOS capacitor, so as to control the portion of charges.
    Type: Application
    Filed: May 18, 2017
    Publication date: April 26, 2018
    Inventors: Yung-Chung Lee, Yi-Cheng Chiu, Hsin-Hui Hsu, Jui-Te Chiu, Han-Chi Liu
  • Patent number: 8158519
    Abstract: In a method of manufacturing a non-volatile memory cell, a self-aligned metal silicide is used in place of a conventional tungsten metal layer to form a polysilicon gate, and the self-aligned metal silicide is used as a connection layer on the polysilicon gate. By using the self-aligned metal silicide to form the polysilicon gate, the use of masks in the etching process may be saved to thereby enable simplified manufacturing process and accordingly, reduced manufacturing cost. Meanwhile, the problem of resistance shift caused by an oxidized tungsten metal layer can be avoided.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: April 17, 2012
    Assignee: Eon Silicon Solution Inc.
    Inventors: Yi-Hsiu Chen, Yung-Chung Lee, Yider Wu
  • Patent number: 8012825
    Abstract: In a method of manufacturing a double-implant NOR flash memory structure, a phosphorus ion implantation process is performed, so that a P-doped drain region is formed in a semiconductor substrate between two gate structures to overlap with a highly-doped drain (HDD) region and a lightly-doped drain (LDD) region. Therefore, the electric connection at a junction between the HDD region and the LDD region is enhanced and the carrier mobility in the memory is not lowered while the problems of short channel effect and punch-through of LDD region are solved.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: September 6, 2011
    Assignee: EON Silicon Solutions Inc.
    Inventors: Yider Wu, Yung-Chung Lee, Yi-Hsiu Chen
  • Publication number: 20110070707
    Abstract: In a method of manufacturing a NOR flash memory, two times of tilt ion implantation process are conducted to form a tilt-implanted source region, so as to improve the distribution of the source region in a semiconductor substrate and reduce the probability of short channel effect (SCE) between the drain regions and the source region in the NOR flash memory.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 24, 2011
    Applicant: EON SILICON SOLUTION INC.
    Inventor: Yung-Chung Lee
  • Publication number: 20110070710
    Abstract: A method for fabricating a NOR semiconductor memory structure includes: performing a deeply doped source ion implantation process and a lightly doped drain ion implantation process; forming oxide layer walls on two said sides of a gate structure, respectively; performing a pocket implant process with control of an incident angle thereof; and performing a deeply doped drain ion implantation process. Characteristics of the NOR semiconductor memory structure are improved by controllably changing the position of a pocket implant region.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 24, 2011
    Applicant: EON SILICON SOLUTION INC.
    Inventor: Yung-Chung Lee
  • Publication number: 20100230738
    Abstract: In a method of manufacturing a NOR flash memory structure, a highly-doped ion implantation process is performed to form a highly-doped drain region to overlap with a lightly-doped drain region. Therefore, the flash memory structure can have a reduced drain junction depth to improve the short channel effect while protecting the lightly-doped drain region from being punched through during an etching process for forming a contact hole.
    Type: Application
    Filed: March 10, 2009
    Publication date: September 16, 2010
    Applicant: EON SILICON SOLUTIONS INC.
    Inventors: Yider Wu, Yung-Chung Lee, Yi-Hsiu Chen
  • Publication number: 20100227460
    Abstract: In a method of manufacturing a NOR flash memory, when the memory device dimensions are further reduced, the forming of spacers at two lateral sides of the gate structures is omitted, and a space between two gate structures can be directly filled up with a dielectric spacer or a shallow trench isolation (STI) layer. Therefore, it is possible to avoid the problem of increased difficulty in manufacturing memory device caused by forming spacers in an extremely small space between the gate structures. The method also enables omission of the self-alignment step needed to form the salicide layer. Therefore, the difficulty in self-alignment due to the extremely small space between the gate structures can also be avoided.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 9, 2010
    Applicant: EON SILICON SOLUTIONS INC.
    Inventors: Yider Wu, Yung-Chung Lee, Yi-Hsiu Chen
  • Publication number: 20100171161
    Abstract: In a method of manufacturing a double-implant NOR flash memory structure, a phosphorus ion implantation process is performed, so that a P-doped drain region is formed in a semiconductor substrate between two gate structures to overlap with a highly-doped drain (HDD) region and a lightly-doped drain (LDD) region. Therefore, the electric connection at a junction between the HDD region and the LDD region is enhanced and the carrier mobility in the memory is not lowered while the problems of short channel effect and punch-through of LDD region are solved.
    Type: Application
    Filed: January 8, 2009
    Publication date: July 8, 2010
    Applicant: EON SILICON SOLUTION INC.
    Inventors: Yider Wu, Yung-Chung Lee, Yi-Hsiu Chen
  • Publication number: 20100099262
    Abstract: In a method of manufacturing a non-volatile memory cell, a self-aligned metal silicide is used in place of a conventional tungsten metal layer to form a polysilicon gate, and the self-aligned metal silicide is used as a connection layer on the polysilicon gate. By using the self-aligned metal silicide to form the polysilicon gate, the use of masks in the etching process may be saved to thereby enable simplified manufacturing process and accordingly, reduced manufacturing cost. Meanwhile, the problem of resistance shift caused by an oxidized tungsten metal layer can be avoided.
    Type: Application
    Filed: October 20, 2008
    Publication date: April 22, 2010
    Inventors: Yi-Hsiu Chen, Yung-Chung Lee, Yider Wu
  • Publication number: 20090086548
    Abstract: A flash memory applied in NAND and/or NOR flash memory has a silicon-oxide-nitride-oxide-silicon cell structure, uses channel-hot-electron injection as a write mechanism thereof to have a localized trapping characteristic, and uses hot-hole injection as an erase mechanism thereof. The flash memory uses an oxide-nitride-oxide structure to replace a floating gate, and thereby solves the problem of an entire leakage caused by a local leakage of the floating gate. The flash memory may be miniaturized without the problem of data mutual interference, and may be easily integrated into the CMOS process to largely reduce the manufacturing cost thereof. Meanwhile, the flash memory also enables faster program time and erase time.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 2, 2009
    Applicant: EON SILICON SOLUTION, INC.
    Inventors: Yider Wu, Yung-Chung Lee
  • Publication number: 20090004812
    Abstract: The present invention provides a method for producing a shallow trench isolation, comprises: forming a plurality of first grooves on a silicon substrate with a mask etching method, wherein the silicon substrate comprises a silicon layer, an oxide layer and a first polysilicon layer; conducting oxidation process on an inner peripheral portion of the second grooves to form an insulting layer. The depth of the insulating layer on the periphery of the first polysilicon layer formed by the oxidation process is larger than the depths of the insulating layers that are formed on the silicon layer and on the oxidation layer through the oxidation process; filling high density plasma oxide layer into the second grooves to form a plurality of high density plasma oxide layer fillers; removing the first polysilicon layer by etching; covering the silicon substrate with a second polysilicon layer by deposition; and polishing the second polysilicon layer to form a plurality of self-aligned floating gate.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Inventor: Yung Chung LEE
  • Publication number: 20070108503
    Abstract: A non-volatile memory is provided. At least two bit lines are disposed in a substrate. The two bit lines are arranged in parallel and extend in a first direction. A plurality of select gate structures is disposed on the substrate between the two bit lines respectively. The select gate structures are arranged in parallel and extend in a first direction. A gap is disposed between each two neighboring select gate structures. A plurality of control gate lines is disposed on the substrate and fills in the gaps between two neighboring select gate structures respectively. The control gate lines are arranged in parallel and extend in a second direction, which crosses the first direction. A plurality of charge storage layers is disposed between the select gate structures and control gate lines respectively.
    Type: Application
    Filed: March 30, 2006
    Publication date: May 17, 2007
    Inventors: Shi-Hsien Chen, Yung-Chung Lee, Hann-Ping Hwang, Saysamone Pittikoun
  • Publication number: 20070108504
    Abstract: A non-volatile memory having a plurality of gate structures, a plurality of charge storage layers and two doped regions is provided. The gate structures are disposed on the substrate and connected in series. The charge storage layers are disposed between every two neighboring gate structures respectively. The gate structures and the charge storage layers form a memory cell column. The two doped regions are disposed in the substrate at both sides of the memory cell column.
    Type: Application
    Filed: March 31, 2006
    Publication date: May 17, 2007
    Inventors: Yung-Chung Lee, Hann-Ping Hwang, Chin-Chung Wang, Chih-Ming Chao, Saysamone Pittikoun, Chih-Chen Cho
  • Publication number: 20070090453
    Abstract: A non-volatile memory unit includes a substrate, a conductive layer, a charge storage layer, a first doped regions, two second doped regions, a first bit line and a second bit line. Wherein, there is a trench in the substrate, the conductive layer is disposed in the substrate and filled the trench. The charge storage layer is disposed between the conductive layer and the substrate. The first doped region is disposed in the substrate below the trench, and the second doped regions are disposed in the substrate on the two sides of the trench respectively. Plural control gates are located above the select gates and aligned in parallel and extend in a second direction. The first bit line and the second bit line are disposed on the substrate and electrically connected to the two second doped regions respectively and parallel to each other.
    Type: Application
    Filed: February 23, 2006
    Publication date: April 26, 2007
    Inventors: Yung-Chung Lee, Shi-Shien Chen, Hann-Ping Hwang
  • Patent number: 7033892
    Abstract: A structure of accumulated type trench MOSFET in silicon carbide(SiC) and forming method are disclosed. The MOSFET includes a trench gate having a gate oxide layer, a polysilicon layer, a source region, and a drain region. The source region contains a p+ heavily doped region, an n+ heavily doped region and a p-base region, and a source contact metal layer. The p+ heavily doped region the n+ heavily doped region and the p-base region are abutting each other. The former two are extended to the front surface of the silicon carbide substrate having the source contact metal layer formed over and the latter one is beneath them. Moreover, the p-base region is separated from the trench by an accumulation channel. The drain contact metal layer is formed on the rear surface of the silicon carbide substrate where the rear region of the silicon carbide is heavily doped than the front region thereof.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: April 25, 2006
    Assignee: Industrial Technology Research Institute
    Inventors: Chih-Wei Hsu, Yung-Chung Lee, Tsung-Ming Pan, Yen Chuo
  • Publication number: 20050266623
    Abstract: A structure of accumulated type trench MOSFET in silicon carbide(SiC) and forming method are disclosed. The MOSFET includes a trench gate having a gate oxide layer, a polysilicon layer, a source region, and a drain region. The source region contains a p+ heavily doped region, an n+ heavily doped region and a p-base region, and a source contact metal layer. The p+ heavily doped region the n+ heavily doped region and the p-base region are abutting each other. The former two are extended to the front surface of the silicon carbide substrate having the source contact metal layer formed over and the latter one is beneath them. Moreover, the p-base region is separated from the trench by an accumulation channel. The drain contact metal layer is formed on the rear surface of the silicon carbide substrate where the rear region of the silicon carbide is heavily doped than the front region thereof.
    Type: Application
    Filed: September 30, 2004
    Publication date: December 1, 2005
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chih-Wei Hsu, Yung-Chung Lee, Tsung-Ming Pan, Yen Chuo