Patents by Inventor Shao-Han Chang

Shao-Han 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).

  • PRISM SHEET AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME
    Publication number: 20090040425
    Abstract: An exemplary prism sheet (20) includes a light input surface (201), a light output surface (202) opposite to the light input surface, and a plurality of micro-depressions (205). The plurality of micro-depressions are defined in the light output surface and arranged in a skewed matrix. Each micro-depression has four side surfaces connected to each other, and a transverse width of each side surface decreases along a direction away from the light output surface and close to the light input surface. The present invention also provides a liquid crystal display device (200) using the above-described prism sheet.
    Type: Application
    Filed: December 17, 2007
    Publication date: February 12, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Shao-Han Chang
  • OPTICAL PLATE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME
    Publication number: 20090040424
    Abstract: An exemplary optical plate includes a transparent layer and a light diffusion layer. The transparent layer and the light diffusion layer are integrally formed. The transparent layer includes a light input interface, a light output surface opposite to the light input interface, and a plurality of curved, elongated, V-shaped micro-protrusions are formed on the light output surface. The light diffusion layer is located adjacent to the light input interface of the transparent layer. A plurality of V-shaped micro-protrusions are formed on an outer surface of the light diffusion layer. A liquid crystal display device using the optical plate is also provided.
    Type: Application
    Filed: November 1, 2007
    Publication date: February 12, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • PRISM SHEET AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME
    Publication number: 20090040421
    Abstract: An exemplary prism sheet includes a light input surface, a light output surface opposite to the light input surface, and a plurality of micro-protrusions formed on the light output surface and arranged in a skewed matrix. Each micro-protrusion includes at least three side surfaces connected in turn. A transverse width of each side surface decreases along a direction away from the light output surface. A liquid crystal display device using the prism sheet can efficiently decrease moiré patterns between the prism sheet and the liquid crystal display panel.
    Type: Application
    Filed: November 29, 2007
    Publication date: February 12, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • PRISM SHEET AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME
    Publication number: 20090033829
    Abstract: An exemplary prism sheet according to a preferred embodiment includes a first surface and a second surface opposite to the first surface. A plurality of micro-protrusions are formed on the first surface. A plurality of curved elongated V-shaped protrusions are formed on the second surface. A liquid crystal display device using the prism sheet is also provided.
    Type: Application
    Filed: November 1, 2007
    Publication date: February 5, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • TWO-LAYERED OPTICAL PLATE
    Publication number: 20090027897
    Abstract: An exemplary optical plate includes a transparent layer and a light diffusion layer. The transparent layer includes a light input interface and a light output surface opposite to the light input interface. A plurality of micro-protrusions formed on the light output surface. The micro-protrusions are arranged along a plurality of separate, circular arcs. Each micro-protrusion has four side surfaces connected to each other, and a transverse width of each side surface decreases along a direction away from the light diffusion layer. The light diffusion layer is integrally formed in immediate contact with the light input interface of the transparent layer, and free of air or gas pockets trapped in an interface therebetween. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin.
    Type: Application
    Filed: November 1, 2007
    Publication date: January 29, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20090027893
    Abstract: An exemplary optical plate includes at least one transparent plate unit and a diffusion layer. The transparent plate unit includes a light output surface, a bottom surface, a plurality of elongated V-shaped protrusions, and a lamp-receiving portion. The bottom surface is opposite to the light output surface. The elongated V-shaped protrusions are formed at the bottom surface. The lamp-receiving portion is defined in the bottom surface. The diffusion layer is formed on the light output surface of the transparent plate unit. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: October 19, 2007
    Publication date: January 29, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • TWO-LAYERED OPTICAL PLATE
    Publication number: 20090027898
    Abstract: An exemplary optical plate includes a transparent layer and a light diffusion layer. The transparent layer includes a light input interface, a light output surface opposite to the light input interface, and a plurality of micro-depressions formed on the light output surface. The micro-depressions are arranged along a plurality of imaginary, separate, circular arcs. Each micro-depression has at least three side surfaces connected to each other, and a transverse width of each side surface increases along a direction away from the light diffusion layer. The light diffusion layer is integrally formed in immediate contact with the light input interface of the transparent layer, and free of air or gas pockets trapped in an interface therebetween. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin.
    Type: Application
    Filed: October 22, 2007
    Publication date: January 29, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Direct type backlight module
    Patent number: 7481569
    Abstract: A direct type backlight module includes a frame, at least an optical sheet, and at least a light guide source. The frame includes a plurality of peripheral sidewalls, at least one holding portion defined in a top of the sidewalls, and an elastic member defined in the holding portion. The optical sheet having a positioning hole corresponding to the elastic member is fixed in the frame by the elastic member being mounted into the positioning hole thereby pushing an inner surface of the positioning hole towards an outer area of the optical sheet. The light source is disposed under the optical sheet. The optical sheet may be fixed on the frame tightly, and may avoid being deformed effectively due to a stretching force produced by the elastic member.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: January 27, 2009
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20090021947
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of enclosing V-shaped protrusions, a plurality of microstructures and a lamp-receiving portion. The light output surface and the bottom surface are on opposite sides of the optical plate. The enclosing V-shaped protrusions are formed on the bottom surface. The microstructures are formed on the light output surface. Each microstructure has circular cross-section taken along a plane parallel to its base surface thereof, a diameter of the circular cross-section decreasing along a direction away from its base surface thereof. The lamp-receiving portion is defined in at least one of the light output surface and the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: December 3, 2007
    Publication date: January 22, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20090021958
    Abstract: An exemplary optical plate includes a plurality of transparent plate units. The transparent plate unit includes a first surface, a second surface, a plurality of conical frustum protrusions, a diffusion layer and a lamp-receiving portion. The second surface is opposite to the first surface. The conical frustum protrusions are formed at the first surface. Each conical frustum protrusion comprises two conical frustums. The diffusion layer is formed at the second surface. The lamp-receiving portion is defined in one of the first surface and the second surface. A backlight module using the optical plate is also provided.
    Type: Application
    Filed: December 15, 2007
    Publication date: January 22, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20090016068
    Abstract: An exemplary optical plate (20) includes a transparent plate unit. The transparent plate unit includes a light output surface (202), a bottom surface (203), a plurality of microstructures (206), a diffusion layer (205), and a lamp-receiving portion (204). The bottom surface is opposite to the light output surface. The microstructures are formed on the bottom surface. Each microstructure includes four side surfaces connected with each other. A transverse width of each side surface decreases along a direction away from the base surface of the microstructure. The diffusion layer is formed on the light output surface. The lamp-receiving portion is defined in the bottom surface. A backlight module (200) using the present optical plate is also provided.
    Type: Application
    Filed: October 31, 2007
    Publication date: January 15, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • TWO-LAYERED OPTICAL PLATE
    Publication number: 20090017262
    Abstract: An exemplary optical plate (20) includes a transparent layer (21) and a light diffusion layer (22). The transparent layer includes a light input interface (211), a light output surface (212) opposite to the light input interface, and a plurality of curved, elongated V-shaped protrusions (213). The curved, elongated V-shaped protrusions protrude out from the light output surface (212). The light diffusion layer (22) is integrally combined and tightly contacted with the light input interface (211) of the transparent layer (21), and being free of air or gas pockets trapped in an interface therebetween. The light diffusion layer (22) includes a transparent matrix resins (221) and a plurality of diffusion particles (223) dispersed in the transparent matrix resins (221).
    Type: Application
    Filed: October 22, 2007
    Publication date: January 15, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20090016067
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a first surface, a second surface, a plurality of enclosing V-shaped protrusions, a diffusion layer and a lamp-receiving portion. The second surface is opposite to the first surface. The enclosing V-shaped protrusions are formed at the first surface. The diffusion layer is formed at the second surface. The lamp-receiving portion is defined in one of the first surface and the second surface. A backlight module using the optical plate is also provided.
    Type: Application
    Filed: October 30, 2007
    Publication date: January 15, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20090010005
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of enclosing V-shaped protrusions, a plurality of microstructures and at least one lamp-receiving portion. The light output surface is opposite to the bottom surface. The enclosing V-shaped protrusions are formed on the bottom surface. The microstructures are formed on the light output surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: October 19, 2007
    Publication date: January 8, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20090010024
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a first surface, a second surface, a plurality of first protrusions, a plurality of second protrusions and a lamp-receiving portion. The second surface is opposite to the first surface. The first protrusions are formed at the first surface, and each first protrusion is a rectangular pyramidal protrusion. The second protrusions are formed at the second surface, and each second protrusion is a conical frustum protrusion. The lamp-receiving portion is defined in one of the first surface and the second surface. A backlight module using the optical plate is also provided.
    Type: Application
    Filed: September 26, 2007
    Publication date: January 8, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20090002999
    Abstract: An exemplary optical plate includes one or more transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of elongated V-shaped protrusions, a plurality of conical frustum protrusions, and a lamp-receiving portion. The light output surface is opposite to the bottom surface. The elongated V-shaped protrusions are formed on the bottom surface. The conical frustum protrusions are formed on the light output surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: October 25, 2007
    Publication date: January 1, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • LED LAMP ASSEMBLY
    Publication number: 20080298072
    Abstract: An exemplary LED lamp includes a housing having an opening, a printed circuit board, at least one LED, a light reflective element, at least one light-shielding sheet and a lamp cover. The printed circuit board is positioned on a bottom of the housing. The LED is electrically connected with the printed circuit board. The light reflective element defines at least one through hole, the LED passing through the corresponding through hole. The at least one light-shielding sheet corresponds to the at least one LED respectively. Each light-shielding sheet comprises a bottom reflective plate and a pair of opposite sidewalls extending from two opposite ends of the bottom reflective plate. A plurality of light holes is defined at ends of the bottom reflective plate adjacent to the two opposite sidewalls. The lamp cover is fixed on the opening of the housing. The LED lamp assembly has a uniform luminance.
    Type: Application
    Filed: September 20, 2007
    Publication date: December 4, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Optical plate and backlight module using the same
    Patent number: 7458714
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of microstructures and at least a lamp-receiving portion. The bottom surface is opposite to the light output surface. The microstructures are formed on the light output surface and the bottom surface respectively. Each microstructure includes at least three side surfaces connected with each other, a transverse width of each side surface decreasing along a direction away from the base surface of the microstructure. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: December 2, 2008
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • LED lamp assembly
    Patent number: 7458701
    Abstract: An exemplary LED lamp includes a housing having an opening, a printed circuit board, at least one LED, a light reflective plate, a light reflective module and a lamp cover. The printed circuit board is positioned on a bottom of the housing. The LED is electrically connected with the printed circuit board. The light reflective plate defines at least one through hole, the LED passing through the corresponding through hole. The light reflective module includes a bottom reflective plate, at least two opposite reflective sidewalls, at least one light-shielding sheet extending at midsections from the opposing reflective sidewalls. The bottom reflective plate defines at least one first cutout, the at least one LED passing through the corresponding first cutout. The at least one light-shielding sheet defines a plurality of light holes and covers the corresponding LED. The LED lamp assembly has a uniform luminance.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: December 2, 2008
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • OPTICAL PLATE AND BACKLIGHT MODULE USING THE SAME
    Publication number: 20080285287
    Abstract: An exemplary optical plate includes one or more transparent plate section. The transparent plate section includes a light output surface, a bottom surface, a plurality of spherical depressions, a plurality of protruding structures and one or more lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical depressions are formed on the bottom surface. The protruding structures are formed on the light output surface. Each protruding structure includes two conical frustums aligned at a center axis and stacked together. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: September 27, 2007
    Publication date: November 20, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Shao-Han Chang