Patents by Inventor Han-chang Cheng

Han-chang Cheng 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: 8382358
    Abstract: A backlight module and a display device using the same are provided. The display device further includes a first panel and a second panel disposed on opposite sides of the backlight module. The backlight module has a light module and a back plate with a through hole formed on it. The light module includes a flexible circuit board having a first strip and a second strip. A plurality of first light sources and second light sources are respectively disposed on the first strip and the second strip. The flexible circuit board passes through the through hole, and the first strip and the second strip are on two opposite sides of the back plate. The first strip and the first light sources are distributed along a side of the first panel while a portion of the second strip is bent to extend along a side of the second strip.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: February 26, 2013
    Assignee: AU Optronics Corporation
    Inventors: Chih-Liang Pan, Ching-Feng Chen, Han-Chang Cheng
  • Patent number: 8107249
    Abstract: A display panel apparatus includes a panel, a fixed frame, a circuit board and one or more flexible printed circuits (FPC). The fixed frame may be a back bezel or a frame, and is placed at the rear of the panel. The fixed frame includes two fixed portions extending outwards from a side thereof. The circuit board is connected to the two fixed portions and disposed at the side of the fixed frame, and extends away from the fixed frame. The maximum plane of the circuit board and the maximum plane of the fixed frame are disposed at a same (common) plane. More specifically, the maximum plane of the circuit board and the maximum plane of the fixed frame are not overlapping in a vertical direction, and are on a same horizontal plane.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: January 31, 2012
    Assignee: Au Optronics Corporation
    Inventors: Cheng Min Tsai, Ching Hung Cheng, Han Chang Cheng
  • Publication number: 20110128722
    Abstract: A backlight module and a display device using the same are provided. The display device further includes a first panel and a second panel disposed on opposite sides of the backlight module. The backlight module has a light module and a back plate with a through hole formed on it. The light module includes a flexible circuit board having a first strip and a second strip. A plurality of first light sources and second light sources are respectively disposed on the first strip and the second strip. The flexible circuit board passes through the through hole, and the first strip and the second strip are on two opposite sides of the back plate. The first strip and the first light sources are distributed along a side of the first panel while a portion of the second strip is bent to extend along a side of the second strip.
    Type: Application
    Filed: August 20, 2010
    Publication date: June 2, 2011
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Chih-Liang Pan, Ching-Feng Chen, Han-Chang Cheng
  • Publication number: 20100165586
    Abstract: A display panel apparatus includes a panel, a fixed frame, a circuit board and one or more flexible printed circuits (FPC). The fixed frame may be a back bezel or a frame, and is placed at the rear of the panel. The fixed frame includes two fixed portions extending outwards from a side thereof. The circuit board is connected to the two fixed portions and disposed at the side of the fixed frame, and extends away from the fixed frame. The maximum plane of the circuit board and the maximum plane of the fixed frame are disposed at a same (common) plane. More specifically, the maximum plane of the circuit board and the maximum plane of the fixed frame are not overlapping in a vertical direction, and are on a same horizontal plane.
    Type: Application
    Filed: June 16, 2009
    Publication date: July 1, 2010
    Applicant: AU OPTRONICS CORPORATION
    Inventors: CHENG MIN TSAI, CHING HUNG CHENG, HAN CHANG CHENG
  • Patent number: 7643103
    Abstract: A backlight module and a liquid crystal display (LCD) both have a heat conductive structure for reducing the non-uniformity phenomenon of display. The backlight module comprises a frame, a reflective sheet, a heat-conductive plate, and a circuit board, wherein the frame has a bottom portion and at least one substantially step-typed through hole is formed therein. The reflective sheet is disposed on the inner surface of the bottom portion, and the heat-conductive plate is disposed in the step-typed through hole, and is spaced from the reflection sheet at a predetermined distance. The circuit board is disposed on the outer surface of the bottom portion of the frame, and has at least one electrical component that is received in the substantially step-typed through hole.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: January 5, 2010
    Assignee: AU Optronics Corporation
    Inventors: Chih-Liang Pan, Chun-Yen Chang, Han-Chang Cheng
  • Publication number: 20070268724
    Abstract: Disclosed are a backlight module and a liquid crystal display (LCD) including the same. The backlight module has a heat conductive structure so as to reduce the non-uniformity phenomenon of display. The backlight module comprises a frame, a reflective sheet, a heat-conductive plate, and a circuit board, wherein the frame has a bottom portion and at least one substantially step-typed through hole is formed therein. The reflective sheet is disposed on the inner surface of the bottom portion, and the heat-conductive plate is disposed in the step-typed through hole, and is spaced from the reflection sheet at a predetermined distance. The circuit board is disposed on the outer surface of the bottom portion of the frame, and has at least one electrical component that is received in the substantially step-typed through hole.
    Type: Application
    Filed: May 21, 2007
    Publication date: November 22, 2007
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Chih-Liang Pan, Chun-Yen Chang, Han-Chang Cheng
  • Patent number: 7290919
    Abstract: A backlight module includes a light source, a light guide plate for guiding light from the light source, and a brightness enhancement film having a plurality of spherical surface microlenses for gathering light from the light guide plate. In contrast to traditional prism sheets, the brightness enhancement film having the plurality of spherical surface microlenses have better efficiency of light-gathering.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: November 6, 2007
    Assignees: AU Optronics Corp., Sun Yat-senUniversity
    Inventors: Cheng-tang Pan, Ching-hua Su, Han-chang Cheng, Chih-liang Pan
  • Publication number: 20070132918
    Abstract: A flat display, a flat panel display and a backlight module are disclosed. The flat display module comprises the flat panel display and the backlight module. The flat panel display comprises an upper polarizer and a lower polarizer. The lower polarizer includes a first diffusion layer. The backlight module comprises a light emitting device, a prism sheet and a light guide plate. A light beam is provided by the light emitting device. The prism sheet is one-dimensional prism array structure. The light guide plate includes a second diffusion layer for diffusing the light beam. The first diffusion layer has an optical haze greater than the optical haze of the surface of the upper polarizer. Accordingly, thin thickness and high brightness are achieved for the flat display.
    Type: Application
    Filed: November 24, 2006
    Publication date: June 14, 2007
    Inventors: Chih-Liang Pan, Chun-Yen Chang, Han-Chang Cheng, Yang-En Wu, Ping-Chin Cheng, Lid-Joon Jong
  • Publication number: 20070121339
    Abstract: A backlight module includes a light source, a light guide plate for guiding light from the light source, and a brightness enhancement film having a plurality of spherical surface microlenses for gathering light from the light guide plate. In contrast to traditional prism sheets, the brightness enhancement film having the plurality of spherical surface microlenses have better efficiency of light-gathering.
    Type: Application
    Filed: April 21, 2006
    Publication date: May 31, 2007
    Inventors: Cheng-tang Pan, Ching-hua Su, Han-chang Cheng, Chih-liang Pan