Patents by Inventor Chao-Fang Chung

Chao-Fang Chung 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: 11036081
    Abstract: A backlight module includes a light guiding unit having a light input surface and a light-emitting unit having light-emitting elements disposed along a first direction and adjacent to the light input surface. A second direction is from the light input surface to the light-emitting unit. A first protruding portion of the light guiding unit includes a sharp protrusion tip at the bottom surface and a part of the light input surface. A curved convex connecting surface of the light input surface connects to the first protruding portion to form a turning portion which is disposed between the connecting surface and the first protruding portion, and is at its intermediate portion and outwardly protrudes toward the light-emitting elements along the second direction. The light-emitting elements are across from the connecting surface and generally positioned above the first protruding portion in the third direction.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: June 15, 2021
    Assignee: INNOLUX CORPORATION
    Inventors: Chi-Liang Chang, Chao-Chun Huang, Chen-Chia Wu, Chao-Fang Chung
  • Publication number: 20200192157
    Abstract: A backlight module includes a light guiding unit having a light input surface and a light-emitting unit having light-emitting elements disposed along a first direction and adjacent to the light input surface. A second direction is from the light input surface to the light-emitting unit. A first protruding portion of the light guiding unit includes a sharp protrusion tip at the bottom surface and a part of the light input surface. A curved convex connecting surface of the light input surface connects to the first protruding portion to form a turning portion which is disposed between the connecting surface and the first protruding portion, and is at its intermediate portion and outwardly protrudes toward the light-emitting elements along the second direction. The light-emitting elements are across from the connecting surface and generally positioned above the first protruding portion in the third direction.
    Type: Application
    Filed: February 24, 2020
    Publication date: June 18, 2020
    Inventors: Chi-Liang CHANG, Chao-Chun HUANG, Chen-Chia WU, Chao-Fang CHUNG
  • Publication number: 20200166693
    Abstract: A backlight module includes a light guide plate having an upper surface, a lower surface, and light-adjusting structures on the lower surface; an optical sheet disposed opposite to the upper surface of the light guide plate; and a light source disposed adjacent to the light guide plate, wherein a light emitted by the light source has a first brightness distribution in a first direction after passing through the light guide plate, and the first brightness distribution has a first maximum brightness corresponding to a first angle and a second maximum brightness corresponding to a second angle, and an absolute value of the first angle and an absolute value of the second angle are greater than 60 degrees, respectively, wherein an absolute value of a difference between the first maximum brightness and the second maximum brightness is less than or equal to 30% of the first maximum brightness.
    Type: Application
    Filed: October 24, 2019
    Publication date: May 28, 2020
    Inventors: Chao-Fang CHUNG, Yen-Liang CHEN, Chen-Chia WU, Chao-Chun HUANG, Ming-Hui CHU
  • Publication number: 20180046028
    Abstract: A display device includes a display panel and a backlight module. The backlight module includes a light-emitting unit and a light guiding unit. The light guiding unit has a light input surface. The light-emitting unit has a plurality of light-emitting elements, which are disposed along a first direction and adjacent to the light input surface. A second direction is from the light input surface to the light-emitting unit. The light guiding unit includes a first protruding portion, which includes a part of the light input surface. The light input surface includes a connecting surface, which connects to the first protruding portion to form a turning portion. The turning portion is disposed between the connecting surface and the first protruding portion. The connecting surface is a planar or curved surface protruding along the second direction. The first protruding portion protrudes along the second direction and extends along the first direction.
    Type: Application
    Filed: August 9, 2017
    Publication date: February 15, 2018
    Inventors: Chi-Liang CHANG, Chao-Chun HUANG, Chen-Chia WU, Chao-Fang CHUNG
  • Patent number: 9594205
    Abstract: The present invention relates to a backlight module, a display comprising thereof and a method for manufacturing a light guiding plate. The backlight module comprising: a housing; a light guiding plate disposed in the housing, and the light guiding plate comprises a light entrance surface, a bottom surface, and a light exit surface; and a light source disposed adjacent the light entrance surface of the light guiding plate, wherein a horizontal cross section of the light exit surface of the light guiding plate has a first curve, and a vertical cross section of the light exit surface of the light guiding plate through any peak of the first curve has a second curve, wherein adjacent peaks of the first curve have a same distance therebetween, and adjacent troughs of the first curve are spaced apart by first distances.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: March 14, 2017
    Assignee: INNOLUX CORPORATION
    Inventors: Chao-Fang Chung, Chi-Liang Chang, Chen-Chia Wu
  • Publication number: 20150212253
    Abstract: The present invention relates to a backlight module, a display comprising thereof and a method for manufacturing a light guiding plate. The backlight module comprising: a housing; a light guiding plate disposed in the housing, and the light guiding plate comprises a light entrance surface, a bottom surface, and a light exit surface; and a light source disposed adjacent the light entrance surface of the light guiding plate, wherein a horizontal cross section of the light exit surface of the light guiding plate has a first curve, and a vertical cross section of the light exit surface of the light guiding plate through any peak of the first curve has a second curve, wherein adjacent peaks of the first curve have a same distance therebetween, and adjacent troughs of the first curve are spaced apart by first distances.
    Type: Application
    Filed: January 28, 2015
    Publication date: July 30, 2015
    Inventors: Chao-Fang CHUNG, Chi-Liang CHANG, Chen-Chia WU
  • Publication number: 20090145010
    Abstract: An inner scattering billboard includes a light directing body, an advertising membrane and a light source. The light directing body contains a plurality of light directing particles inside to diffuse and direct light. Thus light rays emitted from the light source into the light directing body are scattered to allow the light directing body to become a planar light source of even luminosity. The advertising membrane has an advertising symbol located on the surface to be evenly illuminated. The billboard can be made thinner. An LED may be adopted as the light source to save electric power and reduce user's operation cost.
    Type: Application
    Filed: December 5, 2007
    Publication date: June 11, 2009
    Inventors: Chao-Fang CHUNG, Yu-Nan Liu, Chung-Ying Yu, Cheng Hsu, Ming-Chun Lin, Yung-Liang Chang, Pei-Yu Hsu
  • Publication number: 20080112190
    Abstract: A light guide plate is disclosed by the present invention. The light guide plate includes a first main body having a light-exiting surface and a second main body fixed to the first main body. The second main body has a light-entering surface, and the second main body is utilized to guide light received by the light-entering surface to the first main body, wherein there is a first recessed region positioned in one side of a joint portion between the first main body and the second main body, and the first recessed region is positioned at an edge of the light-exiting surface.
    Type: Application
    Filed: March 2, 2007
    Publication date: May 15, 2008
    Inventors: Yu-Nan Liu, Tzu-Wei Wang, Chao-Fang Chung
  • Publication number: 20080084691
    Abstract: A light device with a color mixing effect, includes a first light bar, a second light bar, and a holding structure. The first light bar emits a first color light with a first color, and the second light bar emits a second color light with a second color different from the first color. The holding structure, having a light-mixing area, includes a first positioning portion and a second positioning portion. The first positioning portion is for positioning the first light bar, the second positioning portion is for positioning the second light bar, and the first light bar is parallel to and obliquely faces the second light bar, such that the first color light and the second color light are respectively emitted into the light-mixing area to form a third color light with a third color different from the first color and the second color.
    Type: Application
    Filed: May 11, 2007
    Publication date: April 10, 2008
    Inventors: Yu-Nan Liu, Chao-Fang Chung, Tzu-Wei Wang, Ching-Ching Chen, Wen-Hsien Hsieh, Tzeng-Guang Tsai
  • Publication number: 20080079870
    Abstract: A small-angled, predetermined-positioned and predetermined-orientated light emitting device of a backlight module of a liquid crystal display comprises: a plurality of lower prisms; and each lower prism having an emitting face; a light guiding plate (LGP) being integrated with the plurality of lower prisms as an integral unit; a plurality of upper prisms; each upper prism having an entering face and an total reflecting face, an upper prism plate being integrated with a plurality of upper prisms as an integral unit. Emitting light beams nonuniformly distributes from predetermined positions, and each emitted light beam is limited to a small angle range.
    Type: Application
    Filed: November 14, 2007
    Publication date: April 3, 2008
    Inventors: Miyashita Kazuhiro, Yu-Ping Liu, Chao-Fang Chung
  • Publication number: 20050248961
    Abstract: The present invention provides a resembling prismatic structure of light guide plate to economize the optical films such as prismatic film, diffusion film, reflection film and . . . etc. The present invention simplifies the multifarious structures of the prior LCD backlight modules. It can efficiently decrease the material of making the backlight module and the cost of the manufacturing time. In comparison with that conventional LCD backlight module emits light wholly, continuously and evenly from light emitting face of light guiding plate. Large amount of energy is wasted in the conventional backlight module owing to its illumination on the opaque part of LCD substrate such as common electrode and black matrix.
    Type: Application
    Filed: August 2, 2004
    Publication date: November 10, 2005
    Inventors: Miyashita Kazuhiro, Yu-Ping Liu, Chao-Fang Chung
  • Publication number: 20050213320
    Abstract: The present invention of illuminator pertains to converting spot light source, especially light-emitting-diode, into planar light source with some kind of intensity distribution mode, including a spot light source and a reflector, characterized in that spot light source is located at lateral and nook position, and the reflector can be designed elastically according to requirement of mode of reflected light vector distribution in space and mode of reflected light intensity distribution on illuminated surface. Spot light sources of the present invention include light-emitting-diode LCD. The modes of reflected light include space distribution mode in which light vectors are more orientated or nearly parallel and intensity distribution mode, of reflected light on illuminated surface, in which intensity is nearly even on illuminated surface; Both types of modes can co-exist in a illuminator.
    Type: Application
    Filed: June 1, 2004
    Publication date: September 29, 2005
    Inventors: Miyashita Kazuhiro, Yu-Ping Liu, Chao-Fang Chung
  • Publication number: 20050157518
    Abstract: The present invention of “small-angled, specifically-positioned and specifically-orientated light emitting device of backlight module of liquid crystal display” is related to LCD backlight module which emitting light beams from specified positions, with each emitted light beam limited to small angle range, and with orientations of that angle range of each emitted beam including orientation pointing to specified opening of LCD substrate or with such and vertical to emitting face of light guiding plate, and with distance of central line of neighboring emitted light beams nearing distance of neighboring LCD substrate openings, and with no light being emitted between two neighboring emitted light beams, in comparison with that conventional LCD backlight module emits light wholly, continuously and evenly from light emitting face of light guiding plate.
    Type: Application
    Filed: March 29, 2004
    Publication date: July 21, 2005
    Inventors: Miyashita Kazuhiro, Yu-Ping Liu, Chao-Fang Chung