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).

  • Publication number: 20100065875
    Abstract: A light emitting device includes a light-emitting semiconductor unit and an optical lens coupled to the light-emitting semiconductor unit. The optical lens includes a top surface, a base portion opposite to the top surface, and a peripheral side surface defining a first refractive portion. The top surface is generally funnel-shaped. The first refractive portion is corrugated with a plurality of protruding ridge structures, each including a refractive surface.
    Type: Application
    Filed: November 18, 2009
    Publication date: March 18, 2010
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Patent number: 7677749
    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 through holes and at least one lamp-receiving portion. The light output surface is opposite to the bottom surface. Each of the through holes communicates the light output surface with the bottom surface. 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 28, 2007
    Date of Patent: March 16, 2010
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Shao-Han Chang, Fen Chen
  • Patent number: 7674009
    Abstract: An exemplary LED lamp assembly includes a housing (21), a printed circuit board (22), one or more LEDs (23), a light reflective module (24) and a lamp cover (25). The housing includes a top cover (211), a base sheet (213), a plurality of sidewalls (215), and an opening (218). LEDs are electrically connected to the printed circuit board on the base sheet includes a light-emitting side surface (233) and a top surface (235), a portion of the light-emitting side surface facing the opening, and the top surface facing the top cover. The reflective module defines a through hole (247) for allowing the LED passing therethrough. The first-light-distributing member (26) is located in the housing between the LED and the opening. The lamp cover covers the opening.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: March 9, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 7670020
    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: Grant
    Filed: September 26, 2007
    Date of Patent: March 2, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 7663804
    Abstract: An exemplary optical plate includes a transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a diffusion layer, and a lamp-receiving portion. The bottom surface is opposite to the light output surface. The diffusion layer is 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: Grant
    Filed: September 26, 2007
    Date of Patent: February 16, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Publication number: 20100033952
    Abstract: A lighting device includes a housing, a plurality of LEDs arranged on a base of the housing, and a first optical plate positioned above the LEDs. The first optical plate includes a light input surface, a light output surface opposite to the light input surface, and a plurality of elongated arcuate protrusions formed on the light output surface. The elongated arcuate protrusions are substantially parallel to one another. The lighting device may be used as a backlight module.
    Type: Application
    Filed: January 14, 2009
    Publication date: February 11, 2010
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Patent number: 7659552
    Abstract: An exemplary optical lens (300) includes a top surface (301), a base portion (304) opposite to the top surface, and a peripheral side surface defining a first refractive portion (302). The top surface is a generally funnel-shaped top surface. The first refractive portion is corrugated with a plurality of protruding ridge structures, and each of the ridge structures includes a refractive surface (3021). An exemplary light emitting device incorporating the optical lens is also provided.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: February 9, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Publication number: 20100027240
    Abstract: A lighting device includes a housing, a plurality of LEDs arranged on a base of the housing, and a first optical plate positioned above the LEDs. The first optical plate includes a light input surface, a light output surface opposite to the light input surface, and a plurality of V-shaped ridges aligned in at least two different directions formed on the light output surface. The V-shaped ridges aligned in different directions intersect with one another. The lighting device may be used as a backlight module.
    Type: Application
    Filed: December 31, 2008
    Publication date: February 4, 2010
    Inventor: Shao-Han Chang
  • Patent number: 7654719
    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: Grant
    Filed: October 19, 2007
    Date of Patent: February 2, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 7656597
    Abstract: An exemplary prism sheet includes a transparent main body. The main body includes a first surface, a second surface opposite to the first surface, a plurality of spherical depressions formed in the first surface, and a plurality of triangular pyramidal depressions and hexagonal pyramidal depressions formed in the second surface. Each of the triangular pyramidal depressions is surrounded by three adjacent hexagonal pyramidal depressions. A backlight module using the present prism sheet is also provided.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: February 2, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Tung-Ming Hsu, Shao-Han Chang
  • Patent number: 7654723
    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 conical frustum protrusions, a plurality of spherical protrusions and a lamp-receiving portion. The second surface is opposite to the first surface. The conical frustum protrusions are formed at the first surface. The spherical protrusions are formed at the second surface. The lamp-receiving portion is defined in at least one of the first surface and the second surface. A backlight module using the present optical plate is also provided.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: February 2, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 7654689
    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: Grant
    Filed: September 20, 2007
    Date of Patent: February 2, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 7656580
    Abstract: A light diffusing sheet (21) including a main body. The main body is made of a transparent resin matrix material (211), and a plurality of first light diffusion particles (212) and a plurality of second light diffusion particles (213) dispersed in the transparent resin matrix material uniformly. A refractive index of the second light diffusion particles is greater than that of the first light diffusion particles. The light diffusing sheet has improved light diffusing capability.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: February 2, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Publication number: 20100008062
    Abstract: An optical plate includes a first surface and a second surface opposite to the first surface. The first surface defines a plurality of elongated, arc-shaped depressions. The second surface defines a plurality of triangular pyramidal depressions and a plurality of four-sided pyramidal depressions. Each four-sided pyramidal depression is surrounded by four triangular pyramidal depressions.
    Type: Application
    Filed: December 31, 2008
    Publication date: January 14, 2010
    Inventor: Shao-Han Chang
  • Publication number: 20100008061
    Abstract: An optical plate has a first surface and a second surface opposite to the first surface. The first surface defines a plurality of elongated arcuate troughs therein. The second surface defines a plurality of triangular pyramid depressions and a plurality of hexagonal pyramid depressions therein. Each side of the triangular pyramid depressions borders three hexagonal pyramid depressions. A backlight module using the optical plate is also provided.
    Type: Application
    Filed: December 31, 2008
    Publication date: January 14, 2010
    Inventor: Shao-Han Chang
  • Publication number: 20100008063
    Abstract: A light diffusion plate includes a transparent main body having a plurality of diffusion particles distributed in the transparent main body. The main body includes a first surface, a second surface opposite to the first surface, a plurality of elongated arc-shaped protrusions formed on the first surface, and a plurality of elongated arc-shaped grooves defined in the second surface, an extending direction of the elongated arc-shaped grooves intersects with an extending direction of the elongated arc-shaped protrusions. A backlight module using the light diffusion plate is also provided.
    Type: Application
    Filed: December 31, 2008
    Publication date: January 14, 2010
    Inventor: Shao-Han Chang
  • Publication number: 20100008064
    Abstract: A light diffusion plate includes a first surface and an opposite second surface. The first surface defines a plurality of first elongated arc-shaped grooves and a plurality of second elongated arc-shaped grooves therein. A width of the first elongated arc-shaped grooves decreases and a width of the second elongated arc-shaped grooves increase along the direction from one side to another side. The second surface forms a plurality of first elongated arc-shaped protrusions and a plurality of second elongated arc-shaped protrusions thereon. A width of the first elongated arc-shaped grooves decreases gradually and a width of the second elongated arc-shaped grooves increases gradually along the direction from one side to another side. A width of the first elongated arc-shaped protrusions decreases gradually and a width of the second elongated arc-shaped protrusions increases gradually along the direction from one side to another side.
    Type: Application
    Filed: December 31, 2008
    Publication date: January 14, 2010
    Inventor: Shao-Han Chang
  • Publication number: 20100002416
    Abstract: An optical plate includes a light output surface and a bottom surface opposite to the light output surface. The light output surface defines a plurality of triangular pyramidal depressions and a plurality of four-sided pyramidal depressions. Each four-sided pyramidal depression is surrounded by four triangular pyramidal depressions.
    Type: Application
    Filed: December 31, 2008
    Publication date: January 7, 2010
    Inventor: Shao-Han Chang
  • Publication number: 20100002462
    Abstract: An optical plate includes a first surface, an opposite second surface, a plurality of triangular pyramidal micro-depressions formed in the first surface, and a plurality of elongated arc-shaped depressions formed in the second surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: December 31, 2008
    Publication date: January 7, 2010
    Inventor: Shao-Han Chang
  • Publication number: 20090323326
    Abstract: An exemplary light diffusion plate includes a main body, and a plurality of diffusion particles dispersed in the main body. The main body includes a first surface and a second surface. The first surface and the second surface are on opposite sides of the main body. The first surface is a flat surface. The second surface defines a plurality of rectangular structures. Each rectangular structure defines four adjacent triangular pyramid depressions. A backlight module using the light diffusion plate is also provided.
    Type: Application
    Filed: September 8, 2008
    Publication date: December 31, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG