Patents by Inventor Shih-Chen Wang

Shih-Chen Wang 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: 20140177338
    Abstract: A non-volatile memory cell comprises a coupling device, a first and a second select transistor, and a first and a second floating gate transistor is disclosed. The coupling device is formed in a first conductivity region. The first select transistor is serially connected to the first floating gate transistor and the second select transistor. Moreover, the first select transistor, the first floating gate transistor, and the second select transistor are formed in a second conductivity region. The second floating gate transistor is formed in a third conductivity region, wherein the first conductivity region, the second conductivity region, and the third conductivity region are formed in a fourth conductivity region. The first conductivity region, the second conductivity region, and the third conductivity region are wells, and the fourth conductivity region is a deep well. The third conductivity region surrounds the first conductivity region and the second conductivity region.
    Type: Application
    Filed: February 26, 2014
    Publication date: June 26, 2014
    Applicant: eMemory Technology Inc.
    Inventors: Wen-Hao Ching, Shih-Chen Wang
  • Publication number: 20140160859
    Abstract: A flash memory apparatus is provided. The flash memory apparatus includes a plurality of memory cell regions. Each of the memory cell regions includes a plurality of memory cells, a programming voltage control generator and an erase voltage control generator. The memory cells receives a programming control voltage through a control end point for programming operation, and the memory cells receives an erase control voltage through an erase end point for erasing operation. The programming voltage control generator provides the programming control voltage to the memory cells, and the erase voltage control generator provides the erase control voltage to the memory cells.
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: eMemory Technology Inc.
    Inventors: Wen-Hao Ching, Shih-Chen Wang
  • Patent number: 8705289
    Abstract: A flash memory apparatus is provided. The flash memory apparatus includes a plurality of memory cells and a plurality of programming voltage control generators. Each of the memory cells receives a programming control voltage through a control end thereof, and executes data programming operation according to the programming control voltages. Each of the programming voltage control generators includes a pre-charge voltage transmitter and a pumping capacitor. The pre-charge voltage transmitter provides pre-charge voltage to the end of each of the corresponding memory cells according to pre-charge enable signal during a first period. A pumping voltage is provided to the pumping capacitor during a second period, and the programming control voltage is generated at the control end of each of the memory cells.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: April 22, 2014
    Assignee: eMemory Technology Inc.
    Inventors: Ching-Sung Yang, Wen-Hao Ching, Wei-Ming Ku, Yung-Hsiang Chen, Shih-Chen Wang, Hsin-Ming Chen
  • Patent number: 8625350
    Abstract: A non-volatile memory system includes one or more non-volatile memory cells. Each non-volatile memory cell provides a floating gate, a coupling device, a first floating gate transistor, and a second floating gate transistor. The coupling device is located in a first conductivity region. The first floating gate transistor is located in a second conductivity region, and supplies read current sensed during a read operation. The second floating gate transistor is located in a third conductivity region. Such non-volatile memory cell further provides two transistors for injecting negative charge into the floating gate during a programming operation, and removing negative charge from the second floating gate transistor during an erase operation. The floating gate is shared by the first floating gate transistor, the coupling device, and the second floating gate transistor, and extends over active regions of the first floating gate transistor, the coupling device and the second floating gate transistor.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: January 7, 2014
    Assignee: eMemory Technology Inc.
    Inventors: Wen-Hao Ching, Shih-Chen Wang, Ching-Sung Yang
  • Patent number: 8604538
    Abstract: A non-volatile semiconductor memory device includes a substrate, a first gate formed on a first region of a surface of the substrate, a second gate formed on a second region of the surface of the substrate, a charge storage layer filled between the first gate and the second gate, a first diffusion region formed on a first side of the charge storage layer, and a second diffusion region formed opposite the charge storage layer from the first diffusion region. The first region and the second region are separated by a distance sufficient for forming a self-aligning charge storage layer therebetween.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: December 10, 2013
    Assignee: eMemory Technology Inc.
    Inventors: Hau-Yan Lu, Shih-Chen Wang, Ching-Sung Yang
  • Patent number: 8587036
    Abstract: A non-volatile memory is formed on a substrate. The non-volatile memory includes an isolation structure, a floating gate, and a gate dielectric layer. The isolation structure is disposed in the substrate to define an active area. The floating gate is disposed on the substrate and crosses over the active area. The gate dielectric layer is disposed between the floating gate and the substrate. The floating gate includes a first region and a second region. An energy band of the second region is lower than an energy band of the first region, so that charges stored in the floating gate are away from an overlap region of the floating gate and the gate dielectric layer.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: November 19, 2013
    Assignee: eMemory Technology Inc.
    Inventors: Shih-Chen Wang, Wen-Hao Ching
  • Publication number: 20130234227
    Abstract: An erasable programmable single-poly nonvolatile memory includes a first PMOS transistor comprising a select gate, a first p-type doped region, and a second p-type doped region, wherein the select gate is connected to a select gate voltage, and the first p-type doped region is connected to a source line voltage; a second PMOS transistor comprising the second p-type doped region, a third p-type doped region, and a floating gate, wherein the third p-type doped region is connected to a bit line voltage; and an erase gate region adjacent to the floating gate, wherein the erase gate region is connected to an erase line voltage.
    Type: Application
    Filed: March 8, 2012
    Publication date: September 12, 2013
    Applicant: eMemory Technology Inc.
    Inventors: Wei-Ren Chen, Te-Hsun Hsu, Shih-Chen Wang, Hsin-Ming Chen, Ching-Sung Yang
  • Publication number: 20130176793
    Abstract: A flash memory apparatus is provided. The flash memory apparatus includes a plurality of memory cells and a plurality of programming voltage control generators. Each of the memory cells receives a programming control voltage through a control end thereof, and executes data programming operation according to the programming control voltages. Each of the programming voltage control generators includes a pre-charge voltage transmitter and a pumping capacitor. The pre-charge voltage transmitter provides pre-charge voltage to the end of each of the corresponding memory cells according to pre-charge enable signal during a first period. A pumping voltage is provided to the pumping capacitor during a second period, and the programming control voltage is generated at the control end of each of the memory cells.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 11, 2013
    Applicant: EMEMORY TECHNOLOGY INC.
    Inventors: Ching-Sung Yang, Wen-Hao Ching, Wei-Ming Ku, Yung-Hsiang Chen, Shih-Chen Wang, Hsin-Ming Chen
  • Patent number: 8456916
    Abstract: An only-one-polysilicon layer non-volatile memory unit cell includes a first P-type transistor, a second P-type transistor, a N-type transistor pair, a first and second coupling capacitors is provided. The N-type transistor pair has a third transistor and a fourth transistor that are connected. The third transistor and the fourth transistor have a first floating polysilicon gate and a second floating polysilicon gate to serve as charge storage mediums, respectively. One end of the second coupling capacitor is connected to the gate of the second transistor and is coupled to the second floating polysilicon gate, the other end of the second coupling capacitor receives a second control voltage. One end of the second coupling capacitor is connected to the gate of the second transistor and is coupled to the second floating polysilicon gate, the other end of the second coupling capacitor receives a second control voltage.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: June 4, 2013
    Assignee: eMemory Technology Inc.
    Inventors: Hsin-Ming Chen, Shih-Chen Wang, Wen-Hao Ching, Yen-Hsin Lai, Hau-Yan Lu, Ching-Sung Yang
  • Publication number: 20130100058
    Abstract: A touch display panel includes a transparent substrate, a touch sensing device layer, an isolating layer, and a display device layer. The touch sensing device layer is located on the transparent substrate. The isolating layer has hydrophobic characteristics and covers the touch sensing device layer. The display device layer is located on the isolating layer, and the isolating layer is located between the touch sensing device layer and the display device layer. By this way, a touch sensing function and a display function can be integrated on a transparent substrate, so as to provide a thin touch display panel.
    Type: Application
    Filed: October 15, 2012
    Publication date: April 25, 2013
    Inventors: Ming-Chuan Lin, Shih-Chen Wang, Yueh-Chi Fan, Chiung-Chuang Chen
  • Patent number: 8390056
    Abstract: A non-volatile semiconductor memory device includes a substrate, a first gate formed on a first region of a surface of the substrate, a second gate formed on a second region of the surface of the substrate, a charge storage layer filled between the first gate and the second gate, a first diffusion region formed on a first side of the charge storage layer, and a second diffusion region formed opposite the charge storage layer from the first diffusion region. The first region and the second region are separated by a distance sufficient for forming a self-aligning charge storage layer therebetween.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: March 5, 2013
    Assignee: eMemory Technology Inc.
    Inventors: Hau-Yan Lu, Shih-Chen Wang, Ching-Sung Yang
  • Patent number: 8363475
    Abstract: A non-volatile memory unit cell includes a first transistor pair and first and second control gates. The first transistor pair includes first and second transistors that are connected in series and of the same type. The first and second transistors have a first floating polysilicon gate and a second floating polysilicon gate, respectively. The first control gate is coupled to the first floating polysilicon gate through a tunneling junction and the second control gate is coupled to the second floating polysilicon gate through another tunneling junction.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: January 29, 2013
    Assignee: eMemory Technology Inc.
    Inventors: Hsin-Ming Chen, Shih-Chen Wang, Wen-Hao Ching, Yen-Hsin Lai, Hau-Yan Lu, Ching-Sung Yang
  • Patent number: 8355282
    Abstract: A non-volatile memory system includes one or more non-volatile memory cells. Each non-volatile memory cell provides a floating gate, a coupling device, a first floating gate transistor, and a second floating gate transistor. The coupling device is located in a first conductivity region. The first floating gate transistor is located in a second conductivity region, and supplies read current sensed during a read operation. The second floating gate transistor is located in a third conductivity region. Such non-volatile memory cell further provides two transistors for injecting negative charge into the floating gate during a programming operation, and removing negative charge from the second floating gate transistor during an erase operation. The floating gate is shared by the first floating gate transistor, the coupling device, and the second floating gate transistor, and extends over active regions of the first floating gate transistor, the coupling device and the second floating gate transistor.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: January 15, 2013
    Assignee: eMemory Technology Inc.
    Inventors: Wen-Hao Ching, Shih-Chen Wang, Ching-Sung Yang
  • Patent number: 8339831
    Abstract: A one-time-programmable memory device comprises a one-time-programmable memory cell array, a voltage pumping circuit, and a programming verification circuit. The one-time-programmable memory cell array comprises a plurality of memory cells. Each memory cell is arranged at an intersection of a bit line and a word line. The voltage pumping circuit comprises a plurality of local voltage boost circuits. Each local voltage boost circuit is shared by a corresponding memory cell of the plurality of memory cells. The programming verification circuit is coupled to the one-time-programmable memory cell array for verifying that conduction current of programmed memory cells of the plurality of memory cells is greater than a predetermined current level after programming. Each local boost circuit isolates leakage current of a corresponding programmed memory cell, and prevents programming voltage failure due to current overloading at a corresponding voltage pumping circuit.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: December 25, 2012
    Assignee: eMemory Technology Inc.
    Inventors: Hau-Yan Lu, Ching-Sung Yang, Shih-Chen Wang, Hsin-Ming Chen
  • Publication number: 20120314474
    Abstract: The present invention provides a non-volatile memory cell structure. A first isolation structure is disposed on a substrate and a semiconductor layer is disposed on the first isolation structure to form a silicon on insulator device. A first doping region is made of a portion of the semiconductor layer. A gate is disposed on the first doping region. A gate oxide layer is sandwiched between the first doping region and the gate. A second doping region is disposed within the semiconductor layer and outside the first doping region. A second doping region is in direct contact with the first doping region. A second isolation structure is disposed on the first isolation structure. Further, the second isolation structure surrounds the first doping region and the second doping region. The second isolation structure is also in direct contact with the first doping region and the second doping region.
    Type: Application
    Filed: June 9, 2011
    Publication date: December 13, 2012
    Inventors: Hsin-Ming Chen, Hau-Yan Lu, Shih-Chen Wang, Ching-Sung Yang
  • Publication number: 20120273860
    Abstract: An only-one-polysilicon layer non-volatile memory unit cell includes a first P-type transistor, a second P-type transistor, a N-type transistor pair, a first and second coupling capacitors is provided. The N-type transistor pair has a third transistor and a fourth transistor that are connected. The third transistor and the fourth transistor have a first floating polysilicon gate and a second floating polysilicon gate to serve as charge storage mediums, respectively. One end of the second coupling capacitor is connected to the gate of the second transistor and is coupled to the second floating polysilicon gate, the other end of the second coupling capacitor receives a second control voltage. One end of the second coupling capacitor is connected to the gate of the second transistor and is coupled to the second floating polysilicon gate, the other end of the second coupling capacitor receives a second control voltage.
    Type: Application
    Filed: July 4, 2012
    Publication date: November 1, 2012
    Applicant: eMemory Technology Inc.
    Inventors: Hsin-Ming Chen, Shih-Chen Wang, Wen-Hao Ching, Yen-Hsin Lai, Hau-Yan Lu, Ching-Sung Yang
  • Publication number: 20120236635
    Abstract: A non-volatile memory system includes one or more non-volatile memory cells. Each non-volatile memory cell comprises a floating gate, a coupling device, a first floating gate transistor, and a second floating gate transistor. The coupling device is located in a first conductivity region. The first floating gate transistor is located in a second conductivity region, and supplies read current sensed during a read operation. The second floating gate transistor is located in a third conductivity region. Such non-volatile memory cell further comprises two transistors for injecting negative charge into the floating gate during a programming operation, and removing negative charge from the second floating gate transistor during an erase operation. The floating gate is shared by the first floating gate transistor, the coupling device, and the second floating gate transistor, and extends over active regions of the first floating gate transistor, the coupling device and the second floating gate transistor.
    Type: Application
    Filed: June 1, 2012
    Publication date: September 20, 2012
    Inventors: Wen-Hao Ching, Shih-Chen Wang, Ching-Sung Yang
  • Patent number: 8199578
    Abstract: A single-polysilicon layer non-volatile memory having a floating gate transistor, a program gate and a control gate is provided. The floating gate transistor has a floating gate and a tunneling dielectric layer. The floating gate is disposed on a substrate. The tunneling dielectric layer is disposed between the floating gate and the substrate. The program gate, the control gate and the erase gate are respectively disposed in the substrate under the floating gate separated by the tunneling dielectric layer. Therefore, during a program operation and an erase operation, charges are injected in and expelled out through different regions of the tunneling dielectric layer, so as to increase reliability of the non-volatile memory.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: June 12, 2012
    Assignee: eMemory Technology Inc.
    Inventors: Hsin-Ming Chen, Shih-Chen Wang, Wen-Hao Ching, Yen-Hsin Lai, Ching-Sung Yang
  • Patent number: 8174063
    Abstract: A non-volatile semiconductor memory device includes a substrate, a first gate formed on a first region of a surface of the substrate, a second gate formed on a second region of the surface of the substrate, a charge storage layer filled between the first gate and the second gate, a first diffusion region formed on a first side of the charge storage layer, and a second diffusion region formed opposite the charge storage layer from the first diffusion region. The first region and the second region are separated by a distance sufficient for forming a self-aligning charge storage layer therebetween.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: May 8, 2012
    Assignee: eMemory Technology Inc.
    Inventors: Hau-Yan Lu, Shih-Chen Wang, Ching-Sung Yang
  • Publication number: 20120087170
    Abstract: A one-time-programmable memory device comprises a one-time-programmable memory cell array, a voltage pumping circuit, and a programming verification circuit. The one-time-programmable memory cell array comprises a plurality of memory cells. Each memory cell is arranged at an intersection of a bit line and a word line. The voltage pumping circuit comprises a plurality of local voltage boost circuits. Each local voltage boost circuit is shared by a corresponding memory cell of the plurality of memory cells. The programming verification circuit is coupled to the one-time-programmable memory cell array for verifying that conduction current of programmed memory cells of the plurality of memory cells is greater than a predetermined current level after programming. Each local boost circuit isolates leakage current of a corresponding programmed memory cell, and prevents programming voltage failure due to current overloading at a corresponding voltage pumping circuit.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 12, 2012
    Inventors: Hau-Yan Lu, Ching-Sung Yang, Shih-Chen Wang, Hsin-Ming Chen