Patents by Inventor Tzu Chang

Tzu Chang 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).

  • Patent number: 8721151
    Abstract: A multi-domain dynamic-driving backlight module is provided, which includes a bezel, a reflective plate, a plurality of light emitting units, and a plurality of light guide plates. The reflective plate is disposed on the bezel. The light guide plates respectively have a short side and a long side extending in a predetermined direction, wherein each of the light emitting surfaces of the light guide plates includes a plurality of patterned structures extending in a direction parallel to the light projection direction of the light emitting units. Each of the light emitting surfaces includes a patterned surface includes a plurality of patterned structures extending in a direction parallel to the light projection direction of the light emitting units.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: May 13, 2014
    Assignees: Innocom Technology (Shenzhen) Co. Ltd., Chimei Innolux Corporation
    Inventors: Tzu-Chang Wang, Li-Wei Mao, Hui-Hung Liang
  • Patent number: 8649178
    Abstract: A heat dissipation module for an electronic apparatus including a heat-generating structure is provided. The heat dissipation module includes a heat dissipation structure and a heat-conducting structure. The heat-conducting structure includes a heat-conducting portion and an extending portion. The heat-conducting portion is adhered between the heat-generating structure and the heat dissipation structure. The heat generated by the heat-generating structure is transmitted to the heat dissipation structure through the heat-conducting portion. The extending portion is connected to the heat-conducting portion and exposed to the heat-generating structure and the heat dissipation structure.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: February 11, 2014
    Assignee: Compal Electronics, Inc.
    Inventors: Ching-Yuan Huang, Chang-Yuan Wu, I-Feng Hsu, Tzu-Chang Chen
  • Publication number: 20130021819
    Abstract: A multi-domain dynamic-driving backlight module is provided, which includes a bezel, a reflective plate, a plurality of light emitting units, and a plurality of light guide plates. The reflective plate is disposed on the bezel. The light guide plates respectively have a short side and a long side extending in a predetermined direction, wherein each of the light emitting surfaces of the light guide plates includes a plurality of patterned structures extending in a direction parallel to the light projection direction of the light emitting units. Each of the light emitting surfaces includes a patterned surface includes a plurality of patterned structures extending in a direction parallel to the light projection direction of the light emitting units.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 24, 2013
    Applicants: CHIMEI INNOLUX CORPORATION, INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD.
    Inventors: Tzu-Chang WANG, Li-Wei MAO, Hui-Hung LIANG
  • Publication number: 20120314157
    Abstract: An optical film is provided. The optical film includes a substrate, a reflective polarizer, and a first transmission medium. The reflective polarizer is disposed at the front surface of the substrate. The first transmission medium is disposed at the rear surface of the substrate and comprises a plurality of V-shaped prisms. The substrate, the reflective polarizer, and the first transmission medium are bounded to each other to form a unitary sheet.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 13, 2012
    Applicants: CHIMEI INNOLUX CORPORATION, INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD.
    Inventors: Tzu-Chang WANG, Li-Wei MAO, Hsin-Wen CHANG
  • Publication number: 20120307180
    Abstract: An optical film is provided. The optical film includes a substrate, a first transmission medium, second transmission medium, and a reflective polarizing film. The first transmission medium is disposed at the front surface of the substrate and includes a plurality of embossed microlenses. The second transmission medium is disposed at the rear surface of the substrate and comprises a plurality of V-shaped prisms. The reflective polarizing film is disposed at the front surface of the first transmission medium. The substrate, the first transmission medium, and the second transmission medium are bounded to each other to form a unitary sheet.
    Type: Application
    Filed: May 30, 2012
    Publication date: December 6, 2012
    Applicants: CHIMEI INNOLUX CORPORATION, INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD.
    Inventors: Tzu-Chang WANG, Li-Wei MAO, Hsin-Wen CHANG, Yen-Liang CHEN
  • Patent number: 8107041
    Abstract: An LCD apparatus includes a first polarizer, a half-wavelength retardation plate, a liquid crystal unit and a second polarizer. The LCD apparatus further has a backlight module for generating first polarized light. The first polarizer is disposed downstream of the backlight module, and the first polarizer has a transmission axis. The half-wavelength retardation plate is disposed between the backlight module and the first polarizer. Second polarized light parallel to the transmission axis is generated from the first polarized light passing through the half-wavelength retardation plate. The second polarizer is disposed downstream of the first polarizer. The liquid crystal unit is disposed between the first polarizer and the second polarizer, and the second polarized light emits out of the LCD apparatus through the first polarizer, the liquid crystal unit and the second polarizer.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: January 31, 2012
    Assignee: Chimei Innolux Corporation
    Inventors: Chien-Cheng Liu, I-Lin Ho, Tzu-Chang Wang, I-Lung Yang, Tsung-Hsien Lin
  • Publication number: 20110116238
    Abstract: A heat dissipation module for an electronic apparatus including a heat-generating structure is provided. The heat dissipation module includes a heat dissipation structure and a heat-conducting structure. The heat-conducting structure includes a heat-conducting portion and an extending portion. The heat-conducting portion is adhered between the heat-generating structure and the heat dissipation structure. The heat generated by the heat-generating structure is transmitted to the heat dissipation structure through the heat-conducting portion. The extending portion is connected to the heat-conducting portion and exposed to the heat-generating structure and the heat dissipation structure.
    Type: Application
    Filed: November 12, 2010
    Publication date: May 19, 2011
    Applicant: COMPAL ELECTRONICS, INC.
    Inventors: Ching-Yuan Huang, Chang-Yuan Wu, I-Feng Hsu, Tzu-Chang Chen
  • Patent number: 7800426
    Abstract: A voltage level shifter includes a first switch module having a first transistor and a second transistor, each transistor having a drain, a gate, and a source, wherein the drains of the first and the second transistors are coupled to a first voltage terminal.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: September 21, 2010
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Yu-Tzu Chang
  • Publication number: 20090243692
    Abstract: A voltage level shifter includes a first switch module having a first transistor and a second transistor, each transistor having a drain, a gate, and a source, wherein the drains of the first and the second transistors are coupled to a first voltage terminal.
    Type: Application
    Filed: March 27, 2008
    Publication date: October 1, 2009
    Inventor: Yu-Tzu Chang
  • Patent number: 7582396
    Abstract: This invention discloses a hybrid phase-shift mask (PSM) having multi-film structure that from bottom to top is transparent film, attenuate film, and opaque film. By using several exposure and develop processes as well as controlling the etching selectivity, the multi-film structure can be patterned to form the chrome-less PSM and alternate PSM features within its cell area, and form halftone PSM features within its periphery area.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: September 1, 2009
    Assignee: Toppan Chunghwa Electronics Co., Ltd.
    Inventor: Tzu-Chang Lin
  • Patent number: 7574131
    Abstract: An object detection system and method is applied to an active surveillance system for detecting at least one target object appeared in an area of interest. The object detection system includes a processor for defining the area of interest into at least a first and a second zone; a controller for assigning a first and a second weight to the first and the second zone, respectively, wherein the first weight is higher than the second weight; and a first image capturing device for capturing an image of the target object appeared in the first zone prior to capturing an image of the target object appeared in the second zone. With these arrangements, the detection of at least one target object appeared in more than one zone having a specific weight assigned thereto may be implemented with improved efficiency and accuracy in object selection and reduced interferences from environmental variables.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: August 11, 2009
    Assignee: Sunvision Scientific Inc.
    Inventors: Chao-Hung Chang, Tain-Tzu Chang, Chow-Ing Chang
  • Patent number: 7527414
    Abstract: A direct-type backlight module includes a light-guide plate. The light-guide plate has a first surface and a second surface opposite the first surface. The first surface has at least one first groove. The backlight module may also include at least one light source. The light source corresponds to the first groove so that light emitted from the light source is reflected by the first groove. One or more optical films may be disposed on the first surface of the light-guide plate and a reflector may be disposed below the second surface of the light-guide plate. With the light-guide plate in place, the overall thickness of the backlight module is reduced, and the lamp mura is avoided.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: May 5, 2009
    Assignee: Chi Mei Optoelectronics Corp.
    Inventors: Chen-Pin Hung, Stanley Huang, Tzu-Chang Wang
  • Publication number: 20080180520
    Abstract: A system and method for variable-resolution image saving includes an image capturing member, a data saving member, and an image data processor. A first panoramic image data is captured by the image capturing member in high resolution. The image data is then analyzed and divided into target area and background area. The resolution of background area is lowered to reduce the size of image data. A second panoramic image is then formed with the target area in original high resolution and background area in lower resolution. In this way, memory size and time required for storing and transmitting the second panoramic image data are greatly reduced without loosing important features of the target area.
    Type: Application
    Filed: January 26, 2007
    Publication date: July 31, 2008
    Inventors: Chao-Hung Chang, Tain-Tzu Chang, Chow-Ing Chang
  • Publication number: 20070269722
    Abstract: This invention discloses a hybrid phase-shift mask (PSM) having multi-film structure that from bottom to top is transparent film, attenuate film, and opaque film. By using several exposure and develop processes as well as controlling the etching selectivity, the multi-film structure can be patterned to form the chrome-less PSM and alternate PSM features within its cell area, and form halftone PSM features within its periphery area.
    Type: Application
    Filed: October 18, 2006
    Publication date: November 22, 2007
    Inventor: Tzu-Chang Lin
  • Publication number: 20070263147
    Abstract: An LCD apparatus includes a first polarizer, a half-wavelength retardation plate, a liquid crystal unit and a second polarizer. The LCD apparatus further has a backlight module for generating first polarized light. The first polarizer is disposed downstream of the backlight module, and the first polarizer has a transmission axis. The half-wavelength retardation plate is disposed between the backlight module and the first polarizer. Second polarized light parallel to the transmission axis is generated from the first polarized light passing through the half-wavelength retardation plate. The second polarizer is disposed downstream of the first polarizer. The liquid crystal unit is disposed between the first polarizer and the second polarizer, and the second polarized light emits out of the LCD apparatus through the first polarizer, the liquid crystal unit and the second polarizer.
    Type: Application
    Filed: May 9, 2007
    Publication date: November 15, 2007
    Applicant: CHI MEI OPTOELECTRONICS CORP.
    Inventors: Chien-Cheng LIU, I-Lin Ho, Tzu-Chang WANG, I-Lung Yang, Tsung-Hsien LIN
  • Publication number: 20070230943
    Abstract: An object detection system and method is applied to an active surveillance system for detecting at least one target object appeared in an area of interest. The object detection system includes a processor for defining the area of interest into at least a first and a second zone; a controller for assigning a first and a second weight to the first and the second zone, respectively, wherein the first weight is higher than the second weight; and a first image capturing device for capturing an image of the target object appeared in the first zone prior to capturing an image of the target object appeared in the second zone. With these arrangements, the detection of at least one target object appeared in more than one zone having a specific weight assigned thereto may be implemented with improved efficiency and accuracy in object selection and reduced interferences from environmental variables.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 4, 2007
    Applicant: Sunvision Scientific Inc.
    Inventors: Chao-Hung Chang, Tain-Tzu Chang, Chow-Ing Chang
  • Publication number: 20070225020
    Abstract: A method of blocking a SMS (short message service) message in a mobile terminal is provided. A first message indicating an incoming SMS message is received. It is first determined whether a SMS function of the mobile terminal has been temporarily disabled. If yes, a second message indicating that the mobile terminal is out of memory space is generated. The second message is later sent to a server to discard the first message.
    Type: Application
    Filed: March 21, 2006
    Publication date: September 27, 2007
    Inventor: Tzu Chang
  • Publication number: 20070147035
    Abstract: A direct-type backlight module includes a light-guide plate. The light-guide plate has a first surface and a second surface opposite the first surface. The first surface has at least one first groove. The backlight module may also include at least one light source. The light source corresponds to the first groove so that light emitted from the light source is reflected by the first groove. One or more optical films may be disposed on the first surface of the light-guide plate and a reflector may be disposed below the second surface of the light-guide plate. With the light-guide plate in place, the overall thickness of the backlight module is reduced, and the lamp mura is avoided.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 28, 2007
    Inventors: Chen-Pin Hung, Stanley Huang, Tzu-Chang Wang
  • Publication number: 20070057266
    Abstract: A method of fabricating light emitting diodes (LED) with a colour purifying diffraction lattice (CPDL) is suggested, the essence of the invention is in the use of the coherent scattering of the light by the CPDL for colour purifying of the light emitted by the LED and enhancement its extraction efficiency, the CPDL is a hexagonal two-dimensional periodical pattern on the surface of the LED structure or an internal interface resulting in the periodical variation in the refractive index with the period d The period of CPDL satisfies the equation d=m.lamda./n, where m is a positive integer number, .lamda. is the wavelength of the light generated by LED, and n is the refraction index of LED structure. The height of the hexagonal islands forming CPDL is h=.lamda.(2l+1)/2n, l is a positive integer number or zero. Use of CPDL allows to convert the laterally propagating light into the vertically propagating and simultaneously filter its spectrum.
    Type: Application
    Filed: November 13, 2006
    Publication date: March 15, 2007
    Inventors: Pei-Jih Wang, Pan-Tzu Chang, Wen-Chieh Huang, James Wang, Yury Shreter, Yury Rebane, Ruslan Gorbunov
  • Publication number: 20060232857
    Abstract: A slider having two parts is applied to electric devices, especially those with small sizes and light weights. The slider is made easily and is applied with ease too.
    Type: Application
    Filed: March 17, 2006
    Publication date: October 19, 2006
    Inventors: Li-Sen Chen, Tzu-Chang Liao, Cheng-Jyu Jiang