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).

  • Patent number: 9245459
    Abstract: 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: Grant
    Filed: July 14, 2014
    Date of Patent: January 26, 2016
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Cheng-Huan Chen, Po-Hung Yao
  • Publication number: 20150377451
    Abstract: 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: Application
    Filed: June 18, 2015
    Publication date: December 31, 2015
    Inventors: PO-HUNG YAO, WEN-HSUN YANG
  • Publication number: 20150022077
    Abstract: 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: Application
    Filed: July 14, 2014
    Publication date: January 22, 2015
    Inventors: Cheng-Huan CHEN, Po-Hung YAO
  • Patent number: 8925820
    Abstract: 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: Grant
    Filed: March 14, 2013
    Date of Patent: January 6, 2015
    Inventors: Po-Hung Yao, Wei-Chung Chao
  • Patent number: 8882300
    Abstract: 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: Grant
    Filed: January 18, 2013
    Date of Patent: November 11, 2014
    Assignee: National Tsing Hua University
    Inventors: Cheng-Huan Chen, Po-Hung Yao
  • Publication number: 20140118663
    Abstract: 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: Application
    Filed: October 30, 2013
    Publication date: May 1, 2014
    Applicant: National Tsing Hua University
    Inventors: Cheng-Huan CHEN, Po-Hung YAO
  • Publication number: 20130270142
    Abstract: 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: Application
    Filed: March 14, 2013
    Publication date: October 17, 2013
    Inventors: Po-Hung YAO, Wei-Chung Chao
  • Publication number: 20130271400
    Abstract: 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: Application
    Filed: March 14, 2013
    Publication date: October 17, 2013
    Inventors: Po-Hung Yao, Wei-Chung Chao
  • Publication number: 20120260986
    Abstract: 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: Application
    Filed: February 29, 2012
    Publication date: October 18, 2012
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Cheng-Huan Chen, Po-Hung Yao
  • Patent number: 8279358
    Abstract: 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: Grant
    Filed: December 15, 2009
    Date of Patent: October 2, 2012
    Assignee: National Tsing Hua University
    Inventors: Cheng-Huan Chen, Po-Hung Yao, Ya-Yu Nieh
  • Patent number: 8259396
    Abstract: 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: Grant
    Filed: June 14, 2010
    Date of Patent: September 4, 2012
    Assignee: National Tsing Hua University
    Inventors: Cheng-Huan Chen, Po-Chou Chen, Chien-Chuan Chen, Po-Hung Yao
  • Patent number: 7878689
    Abstract: 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: Grant
    Filed: February 26, 2010
    Date of Patent: February 1, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Yi-Ting Sun, Po-Hung Yao, Heng-Chun Huang, Hsiu-Chen Hsu
  • Publication number: 20100328773
    Abstract: 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: Application
    Filed: June 14, 2010
    Publication date: December 30, 2010
    Applicant: NATIONAL TSING HUA UNIVERSITY (TAIWAN)
    Inventors: Cheng-Huan Chen, Po-Chou Chen, Chien-Chuan Chen, Po-Hung Yao
  • Patent number: 7775668
    Abstract: 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: Grant
    Filed: August 7, 2007
    Date of Patent: August 17, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Po-Hung Yao, Cheng-Huan Chen, Ya-Yu Nieh
  • Publication number: 20100182516
    Abstract: 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: Application
    Filed: December 15, 2009
    Publication date: July 22, 2010
    Applicant: NATIONAL TSING HUA UNIVERSITY (TAIWAN)
    Inventors: Cheng-Huan Chen, Po-Hung Yao, Ya-Yu Nieh
  • Publication number: 20100149821
    Abstract: 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: Application
    Filed: February 26, 2010
    Publication date: June 17, 2010
    Applicant: Industrial Technology Research Institute
    Inventors: Yi-Ting SUN, Po-Hung Yao, Heng-Chun Huang, Hsiu-Chen Hsu
  • Patent number: 7699504
    Abstract: 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: Grant
    Filed: September 14, 2006
    Date of Patent: April 20, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Yi-Ting Sun, Po-Hung Yao, Heng-Chun Huang, Hsiu-Chen Hsu
  • Patent number: 7623293
    Abstract: 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: Grant
    Filed: June 3, 2005
    Date of Patent: November 24, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Po-Hung Yao, Ben-Sheng Lin, Heng-Chun Huang, Yu-Nan Pao, I-Kai Pan, Yi-Ting Sun
  • Publication number: 20080273349
    Abstract: 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: Application
    Filed: July 10, 2007
    Publication date: November 6, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Po-Hung Yao, Wen-Hsun Yang, Ying-Hsiu Lin, Yu-Nan Pao
  • Publication number: 20080273144
    Abstract: 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: Application
    Filed: September 19, 2007
    Publication date: November 6, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Po-Hung Yao, Yu-Nan Pao, Yi-Ting Sun, Ying-Hsiu Lin