Patents by Inventor Ping-Feng Hwang
Ping-Feng Hwang 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: 9207388Abstract: A light source module including a light guide plate, a first light-emitting device and a second light-emitting device is provided. The light guide plate has a first surface, a second surface and a light incident surface. The light incident surface includes a first and second light incident sub-surfaces and a first end, wherein the second light incident sub-surface is oblique relative to the first light incident sub-surface. The first light-emitting device is disposed beside the first light incident sub-surface, and the second light-emitting device is disposed beside the second light incident sub-surface. The light guide plate has a visual area, and the visual area has a first corner located beside the first end, a light-emitting range of the second light-emitting device covers the first corner, and the second light incident sub-surface is located between the first end and the first light incident sub-surface.Type: GrantFiled: April 22, 2013Date of Patent: December 8, 2015Assignee: Coretronic CorporationInventors: Chia-Liang Kang, Yan-Ching Lin, Ping-Feng Hwang, Chen-Hung Lin
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Publication number: 20130279199Abstract: A light source module including a light guide plate, a first light-emitting device and a second light-emitting device is provided. The light guide plate has a first surface, a second surface and a light incident surface. The light incident surface includes a first and second light incident sub-surfaces and a first end, wherein the second light incident sub-surface is oblique relative to the first light incident sub-surface. The first light-emitting device is disposed beside the first light incident sub-surface, and the second light-emitting device is disposed beside the second light incident sub-surface. The light guide plate has a visual area, and the visual area has a first corner located beside the first end, a light-emitting range of the second light-emitting device covers the first corner, and the second light incident sub-surface is located between the first end and the first light incident sub-surface.Type: ApplicationFiled: April 22, 2013Publication date: October 24, 2013Applicant: CORETRONIC CORPORATIONInventors: Chia-Liang Kang, Yan-Ching Lin, Ping-Feng Hwang, Chen-Hung Lin
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Patent number: 8297764Abstract: A reflective sheet includes a first reflective layer and a second reflective layer. The first reflective layer has a first index of refraction, and the second reflective layer has a second index of refraction. The first reflective layer and the second reflective layer are in contact with each other to form a contact interface, and the first index of refraction is different from the second index of refraction so as to make the contact interface be a reflective surface. A top surface of the first reflective layer opposite the contact interface serves as a light incident surface for the reflective sheet, the reflectance of the first reflective layer is larger than the reflectance of the second reflective layer, and the mechanical strength of the second reflective layer is larger than the mechanical strength of the first reflective layer.Type: GrantFiled: August 25, 2009Date of Patent: October 30, 2012Assignee: Coretronic CorporationInventors: Hua-Te Feng, Ping-Feng Hwang, Lin-Chu Weng
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Patent number: 8201984Abstract: A backlight module includes a light guide plate, micro-structures, at least one light source, and a first prism sheet. The light guide plate includes a first surface, a second surface, and a light incident surface connecting the first surface and the second surface. The micro-structures are disposed on at least one of the first surface and the second surface. The light source is disposed beside the light incident surface and capable of emitting a light beam. The first prism sheet includes a first transparent substrate and first prism structures. The first surface is located between the second surface and the first transparent substrate. The first transparent substrate is disposed among the first surface and the first prism structures. Each first prism structure has a first vertex angle protruding away from the first transparent substrate, and the first vertex angle falls within a range of 67 degrees to 83 degrees.Type: GrantFiled: September 28, 2010Date of Patent: June 19, 2012Assignee: Coretronic CorporationInventors: Han-Wen Tsai, Jyh-Ming Chen, Ping-Feng Hwang
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Publication number: 20110128256Abstract: A light guide apparatus is adapted to a touch display apparatus. The touch display apparatus has a display area. The light guide apparatus includes a plurality of light guide units and a plurality of light sources. The light guide units are disposed beside a first side of the display area. Each of the light guide units has a light incident surface, and a space is between each two adjacent light guide units. The light sources are disposed beside the light incident surfaces of the light guide units. Each of the light sources is capable of providing a beam. The beam is capable of entering the light guide unit through the light incident surface and is capable of being transmitted to an external environment from the light guide unit. An optical touch display apparatus is also provided.Type: ApplicationFiled: September 14, 2010Publication date: June 2, 2011Applicant: CORETRONIC CORPORATIONInventors: Han-Wen Tsai, Ping-Feng Hwang
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Publication number: 20110096566Abstract: A backlight module includes a light guide plate, micro-structures, at least one light source, and a first prism sheet. The light guide plate includes a first surface, a second surface, and a light incident surface connecting the first surface and the second surface. The micro-structures are disposed on at least one of the first surface and the second surface. The light source is disposed beside the light incident surface and capable of emitting a light beam. The first prism sheet includes a first transparent substrate and first prism structures. The first surface is located between the second surface and the first transparent substrate. The first transparent substrate is disposed among the first surface and the first prism structures. Each first prism structure has a first vertex angle protruding away from the first transparent substrate, and the first vertex angle falls within a range of 67 degrees to 83 degrees.Type: ApplicationFiled: September 28, 2010Publication date: April 28, 2011Applicant: CORETRONIC CORPORATIONInventors: Han-Wen Tsai, Jyh-Ming Chen, Ping-Feng Hwang
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Publication number: 20100061083Abstract: A reflective sheet includes a first reflective layer and a second reflective layer. The first reflective layer has a first index of refraction, and the second reflective layer has a second index of refraction. The first reflective layer and the second reflective layer are in contact with each other to form a contact interface, and the first index of refraction is different from the second index of refraction so as to make the contact interface be a reflective surface. A top surface of the first reflective layer opposite the contact interface serves as a light incident surface for the reflective sheet, the reflectance of the first reflective layer is larger than the reflectance of the second reflective layer, and the mechanical strength of the second reflective layer is larger than the mechanical strength of the first reflective layer.Type: ApplicationFiled: August 25, 2009Publication date: March 11, 2010Inventors: Hua-Te Feng, Ping-Feng Hwang, Lin-Chu Weng
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Publication number: 20090186152Abstract: A manufacturing method of light guide plate (LGP) for manufacturing a LGP has a plurality of colloid dot like micro-optical structures on its surface. The method includes the following processes. First, a substrate with an embossing structure is provided. Then, a plurality of colloid dots are formed on a surface of the substrate by jetting. Afterwards, a drying process is performed to convert the colloid dots into the colloid dots like micro-optical structures. Finally, a LGP is manufactured by the manufacturing method.Type: ApplicationFiled: August 24, 2008Publication date: July 23, 2009Inventors: Tzeng-Ke Shiau, Ping-Feng Hwang, Wen-Bin Chou
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Publication number: 20090002989Abstract: The present invention discloses an integrally formed reflector structure, a backlight module using the same reflector structure and a method for assembling the same module. An accommodation spacer and a plurality of lamp-support members are formed on a reflector baseplate with a vacuum-forming method, and a plurality of extension portions extend from the edges of the accommodation space. Further, pluralities of support pins, reflecting members, lamp-fixing members, positioning members, bent portions, etc. are formed in the appropriate positions of the reflector baseplate or the extension portions with a vacuum-forming method. Besides, the extension portions are bent from the bent portions to form a plurality of grooves, which are used to secure optical films in cooperation with the positioning members.Type: ApplicationFiled: December 28, 2007Publication date: January 1, 2009Inventors: I-Peng HUNG, Ping-Feng Hwang, Lin-Chu Weng
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Patent number: 7448788Abstract: A backlight module includes a light guide plate and a light source. The light guide plate includes a first end portion, a second end portion, a middle portion between the first and second end portions, a top face extending from the first end portion to the second end portion, a bottom face extending from the first end portion to the second end portion, a light entrance face interconnecting the top and bottom faces at the first end portion, and a plurality of prismatic strips formed on the bottom face. The prismatic strips have a lower density at the first end portion as compared to the middle portion. The density is defined as a total length of the prismatic strips per unit area of the bottom face. The light source is disposed adjacent to the light entrance face.Type: GrantFiled: April 6, 2006Date of Patent: November 11, 2008Assignee: Coretronic CorporationInventors: Chien-Hsiang Chen, Chia-Tsao Wu, Der-Woei Hsaio, Ping-Feng Hwang
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Publication number: 20080251384Abstract: A manufacturing method for a stamper is provided. UV light cure adhesive is sprayed on a substrate and cured to form a three-dimensional pattern. Thereafter, a stamper is formed on the substrate and the three-dimensional pattern, such that the stamper has a first pattern opposite to the three-dimensional pattern. Afterwards, the stamper is separated from the substrate and the three-dimensional pattern. The stamper is disposed in a cavity of an injection molding machine to form a light guide plate. The light guide plate has a second pattern identical with the three-dimensional pattern.Type: ApplicationFiled: August 27, 2007Publication date: October 16, 2008Applicant: CORETRONIC CORPORATIONInventor: Ping-Feng Hwang
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Patent number: 7422358Abstract: A backlight module including a light source, a light guide plate, a lamp reflector and a frame is provided. The light source is disposed at a first side of the light guide plate, and surrounded by the lamp reflector and the light guide plate. The lamp reflector includes a metal substrate and a reflective material layer, and the metal substrate includes a main body and an extended part. The extended part is connected to the main body and disposed under the light guide plate. The reflective material layer is disposed on the main body, and between the main body and the light source, and the light source is surrounded by the reflective material layer and the light guide plate. The light guide and the lamp reflector are disposed on the frame. The backlight module has a better heat dissipation efficiency and lower manufacturing cost.Type: GrantFiled: November 16, 2006Date of Patent: September 9, 2008Assignee: Coretronic CorporationInventors: Lin-Chu Weng, Ping-Feng Hwang, Kun-Ming Tseng
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Patent number: 7374330Abstract: A backlight module housing includes a frame forming a holding space, a light source being accommodated on a side of the holding space, and at least one lateral alignment structure connected to the side of the frame accommodating the light source and protruding to the holding space for laterally immobilizing a display panel when the display panel is accommodated inside the holding space of the frame.Type: GrantFiled: March 5, 2007Date of Patent: May 20, 2008Assignee: Coretronic CorporationInventors: Lin-Chu Weng, Ping-Feng Hwang
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Publication number: 20070268723Abstract: A backlight module housing includes a frame forming a holding space, a light source being accommodated on a side of the holding space, and at least one lateral alignment structure connected to the side of the frame accommodating the light source and protruding to the holding space for laterally immobilizing a display panel when the display panel is accommodated inside the holding space of the frame.Type: ApplicationFiled: March 5, 2007Publication date: November 22, 2007Inventors: Lin-Chu Weng, Ping-Feng Hwang
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Publication number: 20070165420Abstract: A backlight module including a light source, a light guide plate, a lamp reflector and a frame is provided. The light source is disposed at a first side of the light guide plate, and surrounded by the lamp reflector and the light guide plate. The lamp reflector includes a metal substrate and a reflective material layer, and the metal substrate includes a main body and an extended part. The extended part is connected to the main body and disposed under the light guide plate. The reflective material layer is disposed on the main body, and between the main body and the light source, and the light source is surrounded by the reflective material layer and the light guide plate. The light guide and the lamp reflector are disposed on the frame. The backlight module has a better heat dissipation efficiency and lower manufacturing cost.Type: ApplicationFiled: November 16, 2006Publication date: July 19, 2007Applicant: CORETRONIC CORPORATIONInventors: LIN-CHU WENG, PING-FENG HWANG, KUN-MING TSENG
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Publication number: 20070147083Abstract: An edge-type backlight module is applied to a 10-inch to 26-inch liquid crystal displayer. The backlight module includes a wedge-shaped light guide plate, three lamps and a lamp reflective cover. The wedge-shaped light guide plate includes at least a side edge, a bottom surface and a light emitting surface. Pluralities of v-cut structures are formed on the bottom surface. The three lamps are disposed on the side edge of the wedge-shaped light guide plate. The lamp reflective cover surrounds the lamps, so that light beams generated by the lamps are reflected to the wedge-shaped light guide plate by the lamp reflective cover.Type: ApplicationFiled: December 21, 2006Publication date: June 28, 2007Inventor: Ping-Feng Hwang
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Patent number: 7156534Abstract: A backlight module includes a planar light plate with planar illumination for providing a planar light, the backlight module further including a light plate base and at least one side retaining frames that can be assembled/detached. The light plate base is disposed on one side under the light plate, and two opposite sides thereof extend upward to form two side frames for retaining two opposite sides of the light plate. The side retaining frame is sleeved on the lateral side of the opening end of the light plate base, for retaining the light plate in the light plate base.Type: GrantFiled: February 16, 2005Date of Patent: January 2, 2007Assignee: Coretronic CorporationInventors: Ping-Feng Hwang, Bor-Jyh Pan
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Patent number: 7128461Abstract: A back light apparatus comprises a base having a container, a lamp module, a diffuser, and at least one elastic device. The inside surface of the base are coated a reflection layers. The lamp module consists of CCFLs disposed in the container. One end of the elastic element is fixed on the bottom surface of the container; the other end supports the diffuser. The elastic device reduces the deformation of the diffuser to avoid forming the uneven surface on the diffuser. That is, it can provide the high and even brightness for a liquid crystal display panel.Type: GrantFiled: December 18, 2003Date of Patent: October 31, 2006Assignee: Coretronic CorporationInventor: Ping-Feng Hwang
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Publication number: 20060239026Abstract: A backlight module includes a light guide plate and a light source. The light guide plate includes a first end portion, a second end portion, a middle portion between the first and second end portions, a top face extending from the first end portion to the second end portion, a bottom face extending from the first end portion to the second end portion, a light entrance face interconnecting the top and bottom faces at the first end portion, and a plurality of prismatic strips formed on the bottom face. The prismatic strips have a lower density at the first end portion as compared to the middle portion. The density is defined as a total length of the prismatic strips per unit area of the bottom face. The light source is disposed adjacent to the light entrance face.Type: ApplicationFiled: April 6, 2006Publication date: October 26, 2006Inventors: Chien-Hsiang Chen, Chia-Tsao Wu, Der-Woei Hsaio, Ping-Feng Hwang
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Publication number: 20060104067Abstract: The present invention discloses a heat-dissipating method and structure for a backlight module of a display device, which can improve the heat-dissipating ability of the backlight module of a display device. Via shifting the disposing direction of the liquid crystal panel, the present invention enables the control-drive element and the related circuit boards, which are disposed on the rear face of the backlight module, to keep away from the heat-concentrated region so that the disposing positions of the control-drive element and the circuit boards will not overlap the heat-concentrated region of the backlight module; thus, the heat-dissipating ability can be improved. In the preferred embodiment of the present invention, a heat-dissipating component, such as a set of heat-dissipating fins, is installed in the heat-concentrated region in order to increase the heat-dissipating area thereof; thus, the heat-dissipating ability can be further improved, and the heat distribution is to be uniform.Type: ApplicationFiled: January 18, 2005Publication date: May 18, 2006Inventors: Ping-Feng Hwang, Bor-Jyh Pan