Patents by Inventor Yen-Chen Chen

Yen-Chen Chen 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: 20130174966
    Abstract: A molding method of the heat pipe for capillary structure with controllable sintering position wherein said heat pipe is fabricated by said pipe body, grid-sintered composite capillary structure, core rod, evaporation section sintered capillary structure and powder limiting grid. This allows fabrication of the evaporation section sintered capillary structure with the help of the powder limiting grid, such that the capillary structure could be molded more easily while controlling accurately the sintering position and range. Moreover, with embedding of said grid-sintered composite capillary structure, the steam flow channel of the heat pipe could be further expanded and adapted to the flexible processing of the pipe wall, thus facilitating the fabrication and improving the vaporization efficiency of the working fluid with better applicability and industrial benefits.
    Type: Application
    Filed: January 11, 2012
    Publication date: July 11, 2013
    Applicant: FORCECON TECHNOLOGY CO., LTD.
    Inventors: Sin-Wei He, Jhong-Yan Chang, Yen-Chen Chen
  • Patent number: 8300568
    Abstract: A multi-class multimedia broadcast/multicast service (MBMS) system includes a transmitter and at least one receiver. The transmitter transmits N primary signals by N primary channels and an auxiliary signal by an auxiliary channel, wherein a resolution of the auxiliary signal is identical to the highest resolution of the N primary signals and the constellation mappings of the auxiliary signal and the primary signal with the highest resolution among said N primary signals on the corresponding modulation constellations are coupled. The receiver couples the primary signal with the corresponding auxiliary/virtual auxiliary signal to obtain a lower-resolution virtual auxiliary signal, which can also be coupled with the primary signal having the same resolution. Therefore, receiving quality of each resolution is improved by combining the primary signal and the corresponding auxiliary/virtual auxiliary signal.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: October 30, 2012
    Assignee: National Tsing Hua University
    Inventors: Yuh-Ren Tsai, Yen-Chen Chen
  • Patent number: 8164716
    Abstract: A polarization beam splitter (PBS) includes a first prism, a second prism, an alignment layer, and a cholesteric liquid crystal (CLC) layer. The first prism has two first surfaces adjacent to each other and a first slanted surface that forms a first included angle with the two first surfaces, respectively. The second prism has two second surfaces adjacent to each other and a second slanted surface that forms a second included angle with the two second surfaces, respectively. The second slanted surface is opposite to the first slanted surface. The alignment layer is disposed on the first slanted surface of the first prism. The CLC layer is disposed between the alignment layer and the second slanted surface of the second prism.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: April 24, 2012
    Assignee: Himax Display, Inc.
    Inventors: Chien-Tang Wang, Kuan-Hsu Fan-Chiang, Yen-Chen Chen
  • Patent number: 8145813
    Abstract: An electronic device includes: a first output port, a processing circuit and a bridge circuit. The first output port is configured for connecting a connector with a connector type complying with a specific signal transmission standard. The processing circuit is utilized for processing an input data to generate an output data. The bridge circuit is coupled between the processing circuit and the first output port, and utilized for receiving the output data generated from the processing circuit, converting the output data into an output signal which has a physical layer compliant with the specific signal transmission standard and a protocol layer different from the specific signal transmission standard, and then outputting the output signal to the first output port.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: March 27, 2012
    Assignees: Himax Display, Inc., Himax Technologies Limited
    Inventors: Yung-Yuan Ho, Yen-Chen Chen, Pao-Wang Liao
  • Publication number: 20120048516
    Abstract: A flat heat pipe with a composite capillary structure has a flat pipe with a flat and enclosed hollow pipe body including a top wall, a bottom wall, two lateral walls and a chamber. The flat pipe has an evaporation section and a condensation section. The elongated mesh grid is located onto either of the top and bottom walls in the chamber. The elongated mesh grid is extended from the evaporation section to the condensation section. The long porous sintered structure is located adjacent at least one lateral wall in the chamber. The long porous sintered structure is extended from the evaporation section to the condensation section. The porous sintered structure and the elongated mesh grid are prefabricated into a composite capillary structure. The flat heat pipe presents excellent diversion effect and stable positioning with its better vapor diversion space and simple manufacturing process.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Applicant: FORCECON TECHNOLOGY CO., LTD.
    Inventors: Sin-Wei HE, Yen-Chen Chen, Ming-Cyuan Shih
  • Patent number: 8085694
    Abstract: A method for avoiding unnecessary excessive stay of short cycle in discontinuous reception mechanism begins by using the short cycle while the short cycle timer is running. Then, it determines whether the inactivity timer expires or not and whether the short cycle timer expires or not. If the inactivity timer expires but the short cycle timer does not expire, the short cycle is used. If the short cycle timer expires but the inactivity timer does not expire, the long cycle is used. If the inactivity timer and the short cycle timer expire at the same time, either the short cycle or the long cycle is selected for use.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: December 27, 2011
    Assignee: Sunplus mMobile Inc.
    Inventors: Chunli Wu, Tsung-Liang Lu, Yen-Chen Chen, Chih-Wen Chang, Chien-Cheng Kuo
  • Publication number: 20110228178
    Abstract: A polarization beam splitter (PBS) includes a first prism, a second prism, an alignment layer, and a cholesteric liquid crystal (CLC) layer. The first prism has two first surfaces adjacent to each other and a first slanted surface that forms a first included angle with the two first surfaces, respectively. The second prism has two second surfaces adjacent to each other and a second slanted surface that forms a second included angle with the two second surfaces, respectively. The second slanted surface is opposite to the first slanted surface. The alignment layer is disposed on the first slanted surface of the first prism. The CLC layer is disposed between the alignment layer and the second slanted surface of the second prism.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 22, 2011
    Applicant: HIMAX DISPLAY, INC.
    Inventors: Chien-Tang Wang, Kuan-Hsu Fan-Chiang, Yen-Chen Chen
  • Publication number: 20110197950
    Abstract: A photovoltaic module includes a solar module and a heat sink bonded with a solar unit in a vacuum heating pressing manner. The heat sink is used for dissipating thermal energy generated by the solar module. Through the structure, heat of the solar module can be dissipated more effectively, thereby increasing efficiency of photoelectric conversion. Besides, the structure of the photovoltaic module is simplified, a heat conduction interface material in the prior art is not required, and assembly can be performed in the vacuum heating pressing manner, thereby greatly simplifying the manufacturing procedure.
    Type: Application
    Filed: February 10, 2011
    Publication date: August 18, 2011
    Applicants: A2PEAK POWER CO., LTD, FORCEON TECH. CO., LTD
    Inventors: Ching Chieh Lin, Sin Wei Ho, Mei Hsiu Lin, Tzu Hsin Huang, Chun Hsien Chou, Yen Chen Chen
  • Publication number: 20110110283
    Abstract: A multi-class multimedia broadcast/multicast service (MBMS) system includes a transmitter and at least one receiver. The transmitter transmits N primary signals by N primary channels and an auxiliary signal by an auxiliary channel, wherein a resolution of the auxiliary signal is identical to a resolution of the primary signal with the highest resolution and the constellation mappings of the auxiliary signal and the primary signal with the highest resolution on the corresponding modulation constellations can be coupled. The receiver couples the primary signal with the corresponding auxiliary/virtual auxiliary signal to obtain a lower-resolution virtual auxiliary signal, which can also be coupled with the primary signal having the same resolution. Therefore, receiving quality of each resolution is improved by combining the primary signal and the corresponding auxiliary/virtual auxiliary signal.
    Type: Application
    Filed: March 18, 2010
    Publication date: May 12, 2011
    Inventors: Yuh-Ren Tsai, Yen-Chen Chen
  • Patent number: 7888152
    Abstract: A method of forming laterally distributed light emitting diodes (LEDs) is disclosed. A first buffer layer with a first type of conductivity is formed on a semiconductor substrate, and a dielectric layer is formed on the first buffer layer. The dielectric layer is patterned to form a first patterned space therein, followed by forming a first active layer in the first patterned space. The dielectric layer is then patterned to form a second patterned space therein, followed by forming a second active layer in the second patterned space. Second buffer layers with a second type of conductivity are then formed on the first active layer and the second active layer. Finally, electrodes are formed on the second buffer layers and on the first buffer layer.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: February 15, 2011
    Inventors: Chun-Yen Chang, Tsung-Hsi Yang, Yen-Chen Chen
  • Publication number: 20100289734
    Abstract: A pixel circuitry of a display device and a display method thereof are provided herein. The pixel circuitry includes a scan switch, a storage element, and a sampling circuitry. The scan switch has a first terminal coupled to a data line and configured to be asserted according to a scan signal. The storage element is coupled to a second terminal of the scan switch and configured to store a pixel voltage from the data line. The sampling circuitry is configured to sample the stored pixel voltage of the storage element and to obtain a reference voltage for the display device according to the sampled signal. By sampling the stored pixel voltage of the storage element, whether the pixel voltages with different polarities are symmetry can be detected for avoiding flickers.
    Type: Application
    Filed: May 15, 2009
    Publication date: November 18, 2010
    Applicant: Himax Display, Inc.
    Inventors: BIING-SENG WU, Hon-Yuan Leo, Cheng-Chi Yen, Yih-Long Tseng, Yung-Yuan Ho, Yen-Chen Chen
  • Publication number: 20100283789
    Abstract: A display apparatus includes a first controller, a second controller and a display panel. The first controller includes a first memory and is used for receiving a first portion of pixel data of a frame and storing the first portion of the pixel data into the first memory. The second controller, which is external to the first controller and includes a second memory, is used for receiving a second portion of the pixel data of the frame and storing the second portion of the pixel data into the second memory. The display panel is used for receiving at least the first and the second portion of the pixel data outputted from the first and the second controllers, respectively.
    Type: Application
    Filed: May 11, 2009
    Publication date: November 11, 2010
    Inventors: Yao-Hung Lai, Yung-Yuan Ho, Yen-Chen Chen
  • Patent number: 7812803
    Abstract: The present invention relates to a driving method for cholesteric liquid crystal display. A plurality of pixels of the display are controlled by a plurality of row drivers and a plurality of column drivers. According to the method of the invention, firstly, a DC input voltage or a non-symmetric AC input voltage is applied to the row drivers and the column drivers so that the voltage of the pixel is larger than a withstand voltage of the drivers. Then, an initial column signal and an initial row signal are respectively supplied by the corresponding column driver and row driver so as to initialize the corresponding pixel. The polarity of the initial column signal is different from that of the initial row signal. Because the initial row signal minus the initial column signal equals the signal of the pixel, the amplitude of the signal applied to the pixel can be increased.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: October 12, 2010
    Assignee: Himax Technologies, Inc.
    Inventors: Yen-Chen Chen, Chien-Pin Chen, Chia-Cheng Lai
  • Patent number: 7808573
    Abstract: An LCOS panel module including a substrate, a flexible printed circuit (FPC), an LCOS panel, and a face mask is provided. The substrate has an adhesive region on a surface thereof. The FPC is disposed on the substrate and has an opening for exposing the adhesive region. The LCOS panel has a bottom surface and a top surface. The bottom surface of the LCOS panel is fixed on the adhesive region of the substrate exposed from the opening through an adhesive layer and is electrically connected to the FPC. The face mask used for framing the display region of the LCOS panel and sheltering from stray light is disposed on the LCOS panel and has a display opening. A display region of the top surface of the LCOS panel is exposed from the display opening of the face mask.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: October 5, 2010
    Assignee: Himax Display, Inc.
    Inventors: Yen-Chen Chen, Bing-Jei Liao, Chia-Chang Tien, Wen-Liang Wu
  • Patent number: 7800571
    Abstract: A method for driving a dark ring of a liquid-crystal-on-silicon (LCOS) display is provided to prevent the fringe effect (bright lines) due to the constant voltage difference between the dark ring and the adjoining pixels within the LCOS display. A dark ring is divided into a plurality of portions. The polarity of each portion is controlled in accordance with the polarity of the adjoining pixels within the LCOS display and the scan direction of gate drivers such that the polarity inversion for each portion will coincide with that for the adjoining pixels within the LCOS display so as to avoid the fringe effect (bright lines).
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: September 21, 2010
    Assignee: Himax Technologies Limited
    Inventors: Hon-Yuan Leo, Yung-Yuan Ho, Yen-Chen Chen
  • Publication number: 20100197060
    Abstract: A method of forming laterally distributed light emitting diodes (LEDs) is disclosed. A first buffer layer with a first type of conductivity is formed on a semiconductor substrate, and a dielectric layer is formed on the first buffer layer. The dielectric layer is patterned to form a first patterned space therein, followed by forming a first active layer in the first patterned space. The dielectric layer is then patterned to form a second patterned space therein, followed by forming a second active layer in the second patterned space. Second buffer layers with a second type of conductivity are then formed on the first active layer and the second active layer. Finally, electrodes are formed on the second buffer layers and on the first buffer layer.
    Type: Application
    Filed: February 5, 2009
    Publication date: August 5, 2010
    Inventors: Chun-Yen Chang, Tsung-Hsi Yang, Yen-Chen Chen
  • Patent number: 7769926
    Abstract: A method for providing a buffer status report in a mobile communication network is implemented between a base station and a user equipment. When data arrives to buffers of the user equipment and the priority of a logical channel for the data is higher than those of other logical channels for existing data in the buffers, a short buffer status report associated with the buffer of a logical channel group corresponding to the arrival data is triggered. The user equipment is based on obtained resources allocated by the base station to fill all data of the buffer of the logical channel group in a Protocol Data Unit. If all data of the buffer of the logical channel group corresponding to the arrival data can be completely filled in the Protocol Data Unit, the short buffer status report is canceled. Otherwise, the user equipment transmits the short buffer status report.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: August 3, 2010
    Assignee: Sunplus mMobile Inc.
    Inventors: Chunli Wu, Tsung-Liang Lu, Chung-Shan Wang, Yen-Chen Chen, Li-Cheng Lin
  • Patent number: 7764255
    Abstract: The present invention relates to a LCOS display driving system. The driving sequential control block generates a control code representing a loading sequence of the R, G, and B data for pixels in one of scan lines. The multiplexer multiplexes the R, G, and B data from latches according the control code. The shared level shifter shifts the level of the R, G, and B data from the multiplexer. The digital analog converts converting the R, G, and B data to a corresponding analog R, G, and B data voltage. The shared unity-gain buffer stores the analog R, G, and B data voltage from the shared digital analog converter. The demultiplexer demultiplexes the analog R, G, and B data voltage according the control code.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: July 27, 2010
    Assignee: Himax Technologies Limited
    Inventors: Cheng-Chi Yen, Hon-Yuan Leo, Yung-Yuan Ho, Yen-Chen Chen
  • Patent number: 7724220
    Abstract: The invention relates to an LED current driving system. The LED current driving system comprises an LED driver. The LED driver comprises at least one LED driving unit for outputting a driving current to an LED. Each LED driving unit comprises a plurality of current sources and a plurality of switches. The switches are connected to the corresponding current source. Each switch controls the ON/OFF state of the corresponding current source in accordance with the duty cycle control signal and a current control signal. Therefore, by integrating the LED driver on the LCOS panel, the LED current driving system of the invention can decrease the pin number of the LCOS chip, the overall area and the system cost so as to improve the yield of the LED current driving system. Besides, the LED current driving system utilizes the current sources to form the driving current to stably and precisely control the driving current flowing through the corresponding LED so that the color quality of the image can be improved.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: May 25, 2010
    Assignee: Himax Display, Inc.
    Inventors: Cheng-Chi Yen, Yung-Yuan Ho, Yen-Chen Chen
  • Publication number: 20100106878
    Abstract: An electronic device includes: a first output port, a processing circuit and a bridge circuit. The first output port is configured for connecting a connector with a connector type complying with a specific signal transmission standard. The processing circuit is utilized for processing an input data to generate an output data. The bridge circuit is coupled between the processing circuit and the first output port, and utilized for receiving the output data generated from the processing circuit, converting the output data into an output signal which has a physical layer compliant with the specific signal transmission standard and a protocol layer different from the specific signal transmission standard, and then outputting the output signal to the first output port.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 29, 2010
    Inventors: Yung-Yuan Ho, Yen-Chen Chen, Pao-Wang Liao