Patents by Inventor Ming-Dah Liu
Ming-Dah Liu 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).
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Patent number: 8308338Abstract: A light guide plate includes a transparent substrate and a plurality of micro structures. The transparent substrate has a first surface and a second surface opposite the first surface, and the micro structures are disposed at least on the first surface of the transparent substrate and are separate from each other. Each of the micro structures includes a first coating layer and a second coating layer. The first coating layer is formed on the first surface and includes an adhesive material. The second coating layer is formed on at least a part of the first coating layer and includes a light-diffusing material.Type: GrantFiled: July 9, 2010Date of Patent: November 13, 2012Assignee: Coretronic CorporationInventors: Liang-Kang Chang, Hao-Jan Kuo, Ming-Dah Liu
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Patent number: 8186867Abstract: A light guide plate and a side-emitting backlight module having the same are disclosed. The light guide plate includes a transparent substrate, a plurality of prisms and a plurality of condensing lenses. The prisms are arranged side by side on one surface of the transparent substrate. The condensing lenses are disposed between two adjacent prisms, and distributed from sparsely to densely along a direction of a crest line of each of the prisms.Type: GrantFiled: June 18, 2008Date of Patent: May 29, 2012Assignee: Young Lighting Technology Inc.Inventors: Chien-Hsiang Chen, Ming-Dah Liu
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Publication number: 20110085350Abstract: A light guide plate includes a transparent substrate and a plurality of micro structures. The transparent substrate has a first surface and a second surface opposite the first surface, and the micro structures are disposed at least on the first surface of the transparent substrate and are separate from each other. Each of the micro structures includes a first coating layer and a second coating layer. The first coating layer is formed on the first surface and includes an adhesive material. The second coating layer is formed on at least a part of the first coating layer and includes a light-diffusing material.Type: ApplicationFiled: July 9, 2010Publication date: April 14, 2011Inventors: Liang-Kang CHANG, Hao-Jan Kuo, Ming-Dah Liu
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Patent number: 7728255Abstract: A spinning-type pattern-fabrication system comprises at least one carry table used to carry objects, an object-fixing device used to fix the objects onto the carry table, and a control system controlling carry table or at least one laser device. The control system controls the laser device to move linearly back and forth to enable the laser device to fabricate patterns on the objects with the laser beam emitted via the laser device.Type: GrantFiled: April 4, 2007Date of Patent: June 1, 2010Assignee: Coretronic CorporationInventors: Ming-Dah Liu, Jui-Nien Jao, Wen-Hsin Lo
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Publication number: 20100103345Abstract: A backlight module includes at least one point light source and a light guide plate. The light guide plate includes a light emitting surface, a bottom surface, a light incident surface, a first side surface, a second side surface, a first microstructure, and a second microstructure. The bottom surface is opposite to the light emitting surface, the light incident surface connects the light emitting surface and the bottom surface, the point light source is disposed adjacent to the light incident surface, and the first microstructure is formed on the light incident surface. The first side surface is opposite to the light incident surface and connects the light emitting surface and the bottom surface, and the second side surface connects the light emitting surface, the bottom surface, the light incident surface, and the first side surface. The second microstructure is formed on the second side surface.Type: ApplicationFiled: October 9, 2009Publication date: April 29, 2010Inventors: Hao-Jan Kuo, Ming-Dah Liu
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Patent number: 7638265Abstract: A method for manufacturing a mold of a light guide plate is disclosed. The method includes following steps: providing a substrate and forming a plurality of microstructures on the substrate; depositing a first metal layer upon the substrate; spreading a photoresist layer on the first metal layer, exposing the photoresist layer to a photomask, and developing a photoresist pattern; removing a part of the first metal layer without cover of the photoresist pattern so as to form a sink pattern; depositing a second metal layer upon the sink pattern; electroforming a metal plate on the second metal layer; and remaining the metal plate and the second metal layer by separating the metal plate from the photoresist layer, the first metal layer, and the substrate so as to generate the mold of the light guide plate.Type: GrantFiled: July 31, 2007Date of Patent: December 29, 2009Assignee: Coretronic CorporationInventors: Ming-Dah Liu, Shi-Chi Hou, Jui-Nien Jao
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Patent number: 7638956Abstract: To control chroma and brightness in a backlight module, a plurality of reference values of a plurality of monochromatic light beams are provided, and a brightness reference value is provided for the light formed of the monochromatic light beams. Then, a plurality of first light signals of the monochromatic light beams, and a second light signal of the light formed of the monochromatic light beams are sensed and compared with the reference values and the brightness reference value, respectively. Finally, the monochromatic light beams outputted by the plurality of LEDs is calibrated according to a comparison result of the plurality of first light signals with the plurality of reference values and a comparison result of the second light signal with the brightness reference value.Type: GrantFiled: July 10, 2007Date of Patent: December 29, 2009Assignee: Coretronic CorporationInventors: Ming-Dah Liu, Yu-Chuan Wen, Chia-Hung Hsu
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Publication number: 20090116261Abstract: A side-emitting backlight module includes a light guide plate and a plurality of point light sources. The light guide plate has a light incident end face. The point light sources are arranged as a first row and a second row. Each of the point light sources has a light emitting face. The first row is disposed between the second row and the light guide plate. Each point light source of the first row is staggered with respect to each point light source of the second row, so that each light emitting face of the point light sources fronts the light incident end face of the light guide plate.Type: ApplicationFiled: June 18, 2008Publication date: May 7, 2009Applicant: Nano Precision CorporationInventors: Chien-Hsiang Chen, Ming-Dah Liu
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Publication number: 20090109703Abstract: A light guide plate and a side-emitting backlight module having the same are disclosed. The light guide plate includes a transparent substrate, a plurality of prisms and a plurality of condensing lenses. The prisms are arranged side by side on one surface of the transparent substrate. The condensing lenses are disposed between two adjacent prisms, and distributed from sparsely to densely along a direction of a crest line of each of the prisms.Type: ApplicationFiled: June 18, 2008Publication date: April 30, 2009Applicant: Nano Precision CorporationInventors: Chien-Hsiang Chen, Ming-Dah Liu
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Patent number: 7522802Abstract: An optical multilayer film includes first and second optical layers, and a refracting layer. The first optical layer has a light-exit surface. The second optical layer has a light-incoming surface facing the light-exit surface of the first optical layer, and a light-outgoing surface opposite to the light-incoming surface and formed with a light-converging structure. The refracting layer is disposed between and is in contact with the first and second optical layers, is made from a transparent material, and has a refractive index that is smaller than that of the second optical layer.Type: GrantFiled: July 13, 2007Date of Patent: April 21, 2009Assignee: Coretronic CorporationInventors: Tzeng-Ke Shiau, Ming-Dah Liu, Der-Woei Hsaio, Wen-Bin Chou, Ching-Shiang Li
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Publication number: 20090073683Abstract: A light guide plate includes a plurality of light guide units each including a light exit surface, a bottom surface, a first side surface and a second side surface. The first and the second side surfaces respectively include a first oblique surface and a second oblique surface. The first and the second oblique surfaces are opposite to each other and both adjoining the bottom surface. The first side surface of one of the each two adjacent light guide units is joined with the second side surface of the other one and thereby the light exit surfaces of the light guide units cooperatively form a substantially flat surface. The light guide units define a plurality of receiving cavities spaced apart from one another by the first and the second oblique surfaces thereof. In addition, a direct-type surface light source device using the light guide plate also is provided.Type: ApplicationFiled: June 20, 2008Publication date: March 19, 2009Inventors: Chien-Hsiang Chen, Ming-Dah Liu
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Publication number: 20090051852Abstract: A backlight module including a light guide plate, a light source and a transparent elastomer is provided. The light guide plate has a first light emitting surface, a bottom surface opposite to the first light emitting surface and at least a light incident surface contacting the first light emitting surface and the bottom surface. The light source is disposed adjacent to the light incident surface and includes a circuit board and a plurality of light emitting diode devices. Each of the light emitting diode devices is capable of emitting light passing through the light incident surface. The light emitting diode devices are electrically connected to the circuit board. The transparent elastomer is disposed between the light incident surface and each of the light emitting diode devices.Type: ApplicationFiled: April 21, 2008Publication date: February 26, 2009Applicant: NANO PRECISION CORPORATIONInventors: Chien-Hsiang Chen, Ming-Dah Liu, Jui-Nien Jao
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Patent number: 7490962Abstract: A light emitting module including a light source set and a light guide member is provided. The light source set is suitable for providing a light and the light guide member is disposed above the light source set. The light guide member has a top surface, an opposite light incident surface, a first reflection surface, and an opposite light emergent surface connected between the top surface and the light incident surface. The top surface has a first concave surface serving a second reflection surface suitable for reflecting the light. Besides, a portion of the light reflected by the second reflection surface emerges from the light emergent surface through the reflection of the first reflection surface, and the other portion of the light directly emerges from the light emergent surface. Additionally, a surface light source device having the light emitting module is also provided.Type: GrantFiled: October 26, 2006Date of Patent: February 17, 2009Assignee: Coretronic CorporationInventors: Ming-Dah Liu, Tzeng-Ke Shiau, Wen-Bin Chou, Teng-Chao Hou
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Publication number: 20080258167Abstract: The present invention discloses a package structure for light-emitting elements, wherein a horizontally-extending thermal conductive plate contacts a thermal conductive substrate having a larger heat-dissipating area. Via such a horizontal heat-dissipation mechanism, the heat generated by light-emitting elements is dissipated at a higher rate; thereby, the light-emitting elements have a higher working efficiency and a longer service life.Type: ApplicationFiled: April 23, 2007Publication date: October 23, 2008Inventors: Ming-Dah Liu, Chia-Hung Hsu
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Publication number: 20080247190Abstract: A high brightness diffusion plate for homogenizing light beams provided by at least one light source of a backlight module to a display panel is provided, which includes a diffusion layer, a transmittance layer, and a plurality of connecters. The transmittance layer is disposed above the diffusion layer, and the connecters are connected between the diffusion layer and the transmittance layer. Since the high brightness diffusion plate of the present invention is an integrated structure and is stronger, the present invention is not only easier for being assembled inside the backlight module, but also makes the light source provided by the backlight module being more homogeneous.Type: ApplicationFiled: August 6, 2007Publication date: October 9, 2008Applicant: CORETRONIC CORPORATIONInventors: Tzeng-Ke Shiau, Lung-Shiang Luh, Ming-Dah Liu, Der-Woei Hsaio, Shin-Ping Kung, Bih-Chang Wang, Huan-Tsung Lin
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Publication number: 20080068597Abstract: To control chroma and brightness in a backlight module, a plurality of reference values of a plurality of monochromatic light beams are provided, and a brightness reference value is provided for the light formed of the monochromatic light beams. Then, a plurality of first light signals of the monochromatic light beams, and a second light signal of the light formed of the monochromatic light beams are sensed and compared with the reference values and the brightness reference value, respectively. Finally, the monochromatic light beams outputted by the plurality of LEDs is calibrated according to a comparison result of the plurality of first light signals with the plurality of reference values and a comparison result of the second light signal with the brightness reference value.Type: ApplicationFiled: July 10, 2007Publication date: March 20, 2008Inventors: Ming-Dah Liu, Yu-Chuan Wen, Chia-Hung Hsu
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Publication number: 20080070129Abstract: A method for manufacturing a mold of a light guide plate is disclosed. The method includes following steps: providing a substrate and forming a plurality of microstructures on the substrate; depositing a first metal layer upon the substrate; spreading a photoresist layer on the first metal layer, exposing the photoresist layer to a photomask, and developing a photoresist pattern; removing a part of the first metal layer without cover of the photoresist pattern so as to form a sink pattern; depositing a second metal layer upon the sink pattern; electroforming a metal plate on the second metal layer; and remaining the metal plate and the second metal layer by separating the metal plate from the photoresist layer, the first metal layer, and the substrate so as to generate the mold of the light guide plate.Type: ApplicationFiled: July 31, 2007Publication date: March 20, 2008Inventors: Ming-Dah Liu, Shi-Chi Hou, Jui-Nien Jao
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Publication number: 20080062719Abstract: An optical multilayer film includes first and second optical layers, and a refracting layer. The first optical layer has a light-exit surface. The second optical layer has a light-incoming surface facing the light-exit surface of the first optical layer, and a light-outgoing surface opposite to the light-incoming surface and formed with a light-converging structure. The refracting layer is disposed between and is in contact with the first and second optical layers, is made from a transparent material, and has a refractive index that is smaller than that of the second optical layer.Type: ApplicationFiled: July 13, 2007Publication date: March 13, 2008Inventors: Tzeng-Ke Shiau, Ming-Dah Liu, Der-Woei Hsaio, Wen-Bin Chou, Ching-Shiang Li
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Patent number: 7319244Abstract: A lens assembly for sideward light emission includes a lens and a lens cap. The lens has a cup portion, an open end portion, and first and second refracting portions. The cup portion surrounds a light source. The open end portion defines an opening. The first refracting portion interconnects the cup portion and the open end portion. The second refracting portion is disposed in the lens and is formed on the first refracting portion. The lens cap is mounted to the open end portion of the lens for covering the opening.Type: GrantFiled: April 4, 2006Date of Patent: January 15, 2008Assignee: Coretronic CorporationInventors: Ming-Dah Liu, Huang-Jen Chen
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Publication number: 20070251930Abstract: The present invention discloses a spinning-type pattern-fabrication system and a method thereof. This invention comprises at least one carry table used to carry objects, an object-fixing device used to fix the objects onto the carry table, and a control system controlling carry table or at least one laser device. The control system also controls the laser device to move linearly back and forth to enable the laser device to fabricate patterns on the objects with the laser beam emit via the laser device. Thereby, the present invention provides a spinning-type pattern-fabrication system and a method thereof, which fabricates patterns on multiple objects in a single operation and promotes the speed of pattern fabrication.Type: ApplicationFiled: April 4, 2007Publication date: November 1, 2007Inventors: Ming-Dah LIU, Jui-Nien Jao, Wen-Hsin Lo