Patents by Inventor Po-Hung Yao
Po-Hung Yao 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: 9245459Abstract: A display screen includes a substrate and a fluorescent material. The substrate includes a plurality of pixel regions arranged in an array, wherein each pixel region includes a fluorescent region and a transparent region, and the area of the transparent region is larger than the area of the fluorescent region. The fluorescent material is arranged in the fluorescent region and excited by an excitation light to emit a visible light to form an image. The above-mentioned display screen allows a viewer to see the images formed by the fluorescent region and the environmental image at the other side of display screen. A display system including the above-mentioned display screen is also disclosed.Type: GrantFiled: July 14, 2014Date of Patent: January 26, 2016Assignee: NATIONAL TSING HUA UNIVERSITYInventors: Cheng-Huan Chen, Po-Hung Yao
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Publication number: 20150377451Abstract: Provided are a light redirecting film and a wide-viewing angle liquid crystal display. The light redirecting film has a transparent substrate and multiple microstructure units, the transparent substrate has first and second optical surfaces, and the microstructure units are formed on the second optical surface and spaced apart from each other in an areal percentage ranging from 8% to 60%. Accordingly, the light redirecting film is effective to redirect the output light of the LCD module and thus enhances the luminance of the LCD at large viewing angles.Type: ApplicationFiled: June 18, 2015Publication date: December 31, 2015Inventors: PO-HUNG YAO, WEN-HSUN YANG
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Publication number: 20150022077Abstract: A display screen includes a substrate and a fluorescent material. The substrate includes a plurality of pixel regions arranged in an array, wherein each pixel region includes a fluorescent region and a transparent region, and the area of the transparent region is larger than the area of the fluorescent region. The fluorescent material is arranged in the fluorescent region and excited by an excitation light to emit a visible light to form an image. The above-mentioned display screen allows a viewer to see the images formed by the fluorescent region and the environmental image at the other side of display screen. A display system including the above-mentioned display screen is also disclosed.Type: ApplicationFiled: July 14, 2014Publication date: January 22, 2015Inventors: Cheng-Huan CHEN, Po-Hung YAO
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Patent number: 8925820Abstract: A stored-value container has a body and a stored-value chip mounted on the body. The stored-value chip stores payment information for transaction deduction after being read by an external device. When using the stored-value container to buy beverage, instead of paying with cash or a stored-value card, a consumer can hand the stored-value container to a store clerk to finish payment directly through the stored-value chip. Accordingly, with the stored-value container, consumers can finish the purchasing procedure quickly without carrying cash or a stored-value card and also take environmental protection into account.Type: GrantFiled: March 14, 2013Date of Patent: January 6, 2015Inventors: Po-Hung Yao, Wei-Chung Chao
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Patent number: 8882300Abstract: A color filter comprises a first filter element and a second filter element. The first filter element includes a plurality of arrayed filter regions allowing a first spectral component of incident light to pass and reflecting other spectral components of the incident light. The second filter element includes a plurality of arrayed filter regions allowing a second spectral component of the incident light to pass and reflecting other spectral components of the incident light. The center of the filter regions of the second filter element is deviated from the center of the filter regions of the first filter element so that the light reflected from the first filter element can pass through the second filter element. Thereby is enhanced the energy efficiency of the color filter. An edge-type backlight module using the abovementioned color filter is also disclosed.Type: GrantFiled: January 18, 2013Date of Patent: November 11, 2014Assignee: National Tsing Hua UniversityInventors: Cheng-Huan Chen, Po-Hung Yao
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Publication number: 20140118663Abstract: The present invention discloses a color separation system, which uses a plurality of arrayed light source modules to generate light beams having different colors and separated spatially, and which uses a light guide module and an optical lens array to project the light beams having different colors to the display panel of an LCD device in an arrayed form, whereby the color separation system is exempted from using an absorption-type color filter, wherefore the light energy utilization rate is greatly increased. Further, the present invention arranges a reflection-type polarization element on the light output side of the optical lens array and arranges a quarter-wave plate on the bottom face of the light guide module to replace the conventional absorption-type polarization element. Thus, the light energy utilization rate is further increased. Therefore, the present invention can save energy effectively.Type: ApplicationFiled: October 30, 2013Publication date: May 1, 2014Applicant: National Tsing Hua UniversityInventors: Cheng-Huan CHEN, Po-Hung YAO
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Publication number: 20130270142Abstract: A stored-value container has a body and a stored-value chip mounted on the body. The stored-value chip stores payment information for transaction deduction after being read by an external device. When using the stored-value container to buy beverage, instead of paying with cash or a stored-value card, a consumer can hand the stored-value container to a store clerk to finish payment directly through the stored-value chip. Accordingly, with the stored-value container, consumers can finish the purchasing procedure quickly without carrying cash or a stored-value card and also take environmental protection into account.Type: ApplicationFiled: March 14, 2013Publication date: October 17, 2013Inventors: Po-Hung YAO, Wei-Chung Chao
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Publication number: 20130271400Abstract: A shake unlock method for unlocking a shake unlock mobile touch device has steps of displaying an initial unlock image, receiving a touch signal that occurs when the initial unlock image is touched, displaying a shaking control image and an unlock endpoint on the touch panel, receiving a series of continuous location coordinates after the mobile touch device is shaken and varying coordinates of the shaking control image according to the received series of continuous location coordinates, and unlocking a lock mode of the mobile touch device when detecting the coordinates of the shaking control image coincide with coordinates of the unlock endpoint. Accordingly, the drawback of unlocking a conventional mobile touch device arising from the difficulty of dragging an image with single-handed operation can be eliminated without requiring additional hardware equipment.Type: ApplicationFiled: March 14, 2013Publication date: October 17, 2013Inventors: Po-Hung Yao, Wei-Chung Chao
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Publication number: 20120260986Abstract: A system for switching a focus position comprises a plurality of active focus-switch devices capable of changing a focal length for several times, a plurality of objects to be focused, a plurality of incident light beams passing through the active focus-switch devices and then being focused on the objects to be focused, and at least one external power supply electrically connected to the active focus-switch devices, wherein the external power supply is electrically conducted or not conducted to the active focus-switch devices, and the plural incident light beams are focused on the objects to be focused by the active focus-switch devices, or the plural incident light beams passing through the active focus-switch device are projected to the outside in form of a plurality of exit light beams parallel to the plural incident light beams.Type: ApplicationFiled: February 29, 2012Publication date: October 18, 2012Applicant: NATIONAL TSING HUA UNIVERSITYInventors: Cheng-Huan Chen, Po-Hung Yao
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Patent number: 8279358Abstract: A complex image display device comprises a light source, an illumination optical module, a micro display module, at least one optical projection module, at least one image-light-path switch module, an image-light-path control unit, and at least one image display screen, wherein the light source provides a light beam, the illumination optical module receives and shapes the light beam, continuously the light beam is projected by the illumination optical module. The micro display module provides an image-to-be-displayed and the light beam is then modulated by the image to become at least an image-modulated light beam for displaying. Then, the optical projection module receives and magnifies the image-modulated light beam. Continuously, the image-light-path switch module receives the magnified image-modulated light beam and switches the light path of the light beam.Type: GrantFiled: December 15, 2009Date of Patent: October 2, 2012Assignee: National Tsing Hua UniversityInventors: Cheng-Huan Chen, Po-Hung Yao, Ya-Yu Nieh
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Patent number: 8259396Abstract: A double-sided microlens array is applied to a laser beam shaping and homogenizing device of a laser system. The double-sided microlens array is able to shape the energy distribution of an incident laser beam to a square and flat-top beam with the average uniformity of energy and comprises a base plate, a plurality of first micro lenslets and a plurality of second micro lenslets. The first micro lenslet and the second micro lenslet have the convexes with the same figures and comply with the classification of an optical diffractive element, the first micro lenslets and the second micro lenslets are disposed on the first surface and the second surface of the base plate, which are corresponding to each other in order to tightly line up the arrangements of arrays. The first micro lenslets and the second micro lenslets are correspondingly misalignment.Type: GrantFiled: June 14, 2010Date of Patent: September 4, 2012Assignee: National Tsing Hua UniversityInventors: Cheng-Huan Chen, Po-Chou Chen, Chien-Chuan Chen, Po-Hung Yao
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Patent number: 7878689Abstract: The present invention relates to a light source package structure, which comprises: an accommodating space for accommodating a light source, a first refraction surface, and at least a second refraction surface. The first refraction surface receives light discharging from the light source while refracting the same to form a first refracting light, the upper part of the first refraction surface further comprising a refracting structure for refracting the light emitted from the light source. The second refraction surface receives and refracts the first refracting light to form a discharging light being emitted out of the light source package structure. Wherein, an included angle is formed between the normal vector of a portion of the second refraction surface and the central axis of the light source package structure. It is noted that the aforesaid package structure can be used in various packaging for improving refraction.Type: GrantFiled: February 26, 2010Date of Patent: February 1, 2011Assignee: Industrial Technology Research InstituteInventors: Yi-Ting Sun, Po-Hung Yao, Heng-Chun Huang, Hsiu-Chen Hsu
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Publication number: 20100328773Abstract: A double-sided microlens array is applied to a laser beam shaping and homogenizing device of a laser system. The double-sided microlens array is able to shape the energy distribution of an incident laser beam to a square and flat-top beam with the average uniformity of energy and comprises a base plate, a plurality of first micro lenslets and a plurality of second micro lenslets. The first micro lenslet and the second micro lenslet have the convexes with the same figures and comply with the classification of an optical diffractive element, the first micro lenslets and the second micro lenslets are disposed on the first surface and the second surface of the base plate, which are corresponding to each other in order to tightly line up the arrangements of arrays. The first micro lenslets and the second micro lenslets are correspondingly misalignment.Type: ApplicationFiled: June 14, 2010Publication date: December 30, 2010Applicant: NATIONAL TSING HUA UNIVERSITY (TAIWAN)Inventors: Cheng-Huan Chen, Po-Chou Chen, Chien-Chuan Chen, Po-Hung Yao
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Patent number: 7775668Abstract: A color-mixing laser module is disclosed, which is comprised of a laser unit capable of emitting red, blue and green laser beams; a beam combiner, for receiving and converging the laser beams emitted from the laser unit and then directing the converged laser light to illuminate on a light pattern adjusting unit; and the light pattern adjusting unit, capable of receiving the converged laser light from the beam combiner for adjusting the pattern of the same.Type: GrantFiled: August 7, 2007Date of Patent: August 17, 2010Assignee: Industrial Technology Research InstituteInventors: Po-Hung Yao, Cheng-Huan Chen, Ya-Yu Nieh
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Publication number: 20100182516Abstract: A complex image display device comprises a light source, an illumination optical module, a micro display module, at least one optical projection module, at least one image-light-path switch module, an image-light-path control unit, and at least one image display screen, wherein the light source provides a light beam, the illumination optical module receives and shapes the light beam, continuously the light beam is projected by the illumination optical module. The micro display module provides an image-to-be-displayed and the light beam is then modulated by the image to become at least an image-modulated light beam for displaying. Then, the optical projection module receives and magnifies the image-modulated light beam. Continuously, the image-light-path switch module receives the magnified image-modulated light beam and switches the light path of the light beam.Type: ApplicationFiled: December 15, 2009Publication date: July 22, 2010Applicant: NATIONAL TSING HUA UNIVERSITY (TAIWAN)Inventors: Cheng-Huan Chen, Po-Hung Yao, Ya-Yu Nieh
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Publication number: 20100149821Abstract: The present invention relates to a light source package structure, which comprises: an accommodating space for accommodating a light source, a first refraction surface, and at least a second refraction surface. The first refraction surface receives light discharging from the light source while refracting the same to form a first refracting light, the upper part of the first refraction surface further comprising a refracting structure for refracting the light emitted from the light source. The second refraction surface receives and refracts the first refracting light to form a discharging light being emitted out of the light source package structure. Wherein, an included angle is formed between the normal vector of a portion of the second refraction surface and the central axis of the light source package structure. It is noted that the aforesaid package structure can be used in various packaging for improving refraction.Type: ApplicationFiled: February 26, 2010Publication date: June 17, 2010Applicant: Industrial Technology Research InstituteInventors: Yi-Ting SUN, Po-Hung Yao, Heng-Chun Huang, Hsiu-Chen Hsu
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Patent number: 7699504Abstract: The present invention relates to a light source package structure, which comprises: an accommodating space for accommodating a light source, a first refraction surface, and at least a second refraction surface. The first refraction surface receives light discharging from the light source while refracting the same to form a first refracting light, the upper part of the first refraction surface further comprising a refracting structure for refracting the light emitted from the light source. The second refraction surface receives and refracts the first refracting light to form a discharging light being emitted out of the light source package structure. Wherein, an included angle is formed between the normal vector of a portion of the second refraction surface and the central axis of the light source package structure. It is noted that the aforesaid package structure can be used in various packaging for improving refraction.Type: GrantFiled: September 14, 2006Date of Patent: April 20, 2010Assignee: Industrial Technology Research InstituteInventors: Yi-Ting Sun, Po-Hung Yao, Heng-Chun Huang, Hsiu-Chen Hsu
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Patent number: 7623293Abstract: The present invention discloses an optical element, having a first optical surface and a second optical surface for receiving an incident light, the optical element comprising: at least a transparent diffusion unit, for scattering the incident light, each being placed on the first optical surface; and at least a transparent collimation unit, for collimating the incident light, each being place on the first optical surface abutted and adjacent to the diffusion unit in an alternative manner.Type: GrantFiled: June 3, 2005Date of Patent: November 24, 2009Assignee: Industrial Technology Research InstituteInventors: Po-Hung Yao, Ben-Sheng Lin, Heng-Chun Huang, Yu-Nan Pao, I-Kai Pan, Yi-Ting Sun
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Publication number: 20080273349Abstract: A light source apparatus including a light emitting module and a reflection microstructure layer is provided. The light emitting module emits a light. The reflection microstructure layer is disposed at the base of the light source apparatus and reflects an incident light emitted by the light emitting module in substantially a same direction.Type: ApplicationFiled: July 10, 2007Publication date: November 6, 2008Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Po-Hung Yao, Wen-Hsun Yang, Ying-Hsiu Lin, Yu-Nan Pao
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Publication number: 20080273144Abstract: A diffusing polarizer including a substrate and a microstructure layer is provided. The micro-structure layer includes a solid phase liquid crystal having a birefringence feature. The diffusing polarizer is capable of both polarizing and diffusing incident light beams. A backlight module using the diffusing polarizer is also provided.Type: ApplicationFiled: September 19, 2007Publication date: November 6, 2008Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Po-Hung Yao, Yu-Nan Pao, Yi-Ting Sun, Ying-Hsiu Lin