Patents by Inventor Shin-Tson Wu

Shin-Tson Wu 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).

  • Publication number: 20210122887
    Abstract: Perovskite-polymer composites including perovskite nanocrystals dispersed in a polymer matrix, wherein the perovskite nanocrystals have an average size of from about 5 nm to about 20 nm. Methods for producing a perovskite-polymer composites that may include contacting a solid material comprising a polymer matrix with a solution comprising a perovskite precursor; allowing the solution to penetrate the solid material to yield a swollen solid material comprising the perovskite precursor dispersed within the polymer matrix; optionally contacting the swollen solid material with an antisolvent; and annealing the swollen solid material to crystallize the perovskite precursor and to yield the perovskite-polymer composite comprising perovskite nanocrystals dispersed in the polymer matrix.
    Type: Application
    Filed: July 30, 2020
    Publication date: April 29, 2021
    Inventors: Yajie DONG, Shin-Tson WU, Juan HE
  • Patent number: 10907092
    Abstract: Methods of making luminescent perovskite-polymer composites are provided and structures using the same. Perovskite-polymer composites made by the method described herein are provided. The perovskite-polymer composite is useful in many applications including downconverters for backlight units (BLU) of liquid crystal displays (LCDs), as well as for and could be used for light emitting devices, lasers or as active absorber or passive luminescent concentrators for solar photovoltaic applications.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: February 2, 2021
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Yajie Dong, Yanan Wang, Shin-Tson Wu, Juan He, Hao Chen, Jiangshan Chen
  • Publication number: 20200110267
    Abstract: An optical display system includes an information display (image-generating) component, a polarization dependent image offset optical element and possibly also a polarization rotator. By controlling the image offset optical element either by direct applying voltage or by controlling the polarization of the displayed light through the polarization rotator, the display pixels can be switched by a certain portion. By switching between offset and non-offset state with appropriate image displayed, the resolution as observed by the users can be enhanced.
    Type: Application
    Filed: June 22, 2017
    Publication date: April 9, 2020
    Inventors: Yun-Han LEE, Tao ZHAN, Guanjun TAN, Fangwang GOU, Fenglin PENG, Shin-Tson WU
  • Patent number: 10593902
    Abstract: An ultrabright bright quantum dot light-emitting diode (QLED) device and associated method of manufacture. The QLED device includes quantum dots (QD) as emitters and a mixture of metal oxide nanoparticles and alkali metal compounds for simultaneous electron injection and hole blocking to achieve charging balance at high driving current conditions. The ultrabright QLEDs are useful for many light source applications including, but not limited to display, solid state lighting, optical sensor, phototherapy, photomedicine and photobiomedicine.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 17, 2020
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Yajie Dong, Hao Chen, Shin-Tson Wu, Juan He
  • Publication number: 20190285939
    Abstract: An optical display system includes an information display (image-generating) component, a polarization rotator, a polarization dependent optical element, an input holographic coupler, a light guide and an output holographic coupler. By controlling the polarization of the displayed light through the polarization rotator, the polarization dependent optical element changes the viewable content to different distances from the viewer. This enables the generation of a proper light field which will then be coupled into the light guide through the input holographic coupler, and finally go through the output holographic coupler to a user's eye.
    Type: Application
    Filed: June 7, 2019
    Publication date: September 19, 2019
    Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Yun-han Lee, Fenglin Peng, Guanjun Tan, Yishi Weng, Shin-Tson Wu
  • Publication number: 20190130863
    Abstract: A liquid crystal display includes: an upper substrate and a lower substrate spaced apart from each other, forming a cell gap therebetween. A liquid crystal layer is disposed in the cell gap between the upper substrate and the lower substrate and has liquid crystal molecules. A common electrode is disposed on the lower substrate facing the liquid crystal layer. A passivation layer is disposed on the lower substrate and covers the common electrode. Multiple pixel electrodes are disposed on the passivation layer. A planar electrode is disposed on the upper substrate facing the liquid crystal layer, and is provided with a first biased voltage. The liquid crystal molecules of the liquid crystal layer are vertically aligned at a voltage-off state. In some cases, the upper substrate has a first anchoring energy W2 and the lower substrate has a second anchoring energy W2, and W2 is weaker than W1.
    Type: Application
    Filed: October 27, 2017
    Publication date: May 2, 2019
    Inventors: Hai-Wei Chen, Shin-Tson Wu, Ming-Chun Li, Seok-Lyul Lee
  • Patent number: 10268076
    Abstract: Display devices and related methods involving patterned phase retarding are provided. A representative display device includes: a backlight unit, having a light source and a color conversion layer having an alignment direction, the light comprising a first light exhibiting a first upstream polarization ratio, a second light exhibiting a second upstream polarization ratio, and a third light exhibiting a third upstream polarization ratio; and a patterned phase retarder positioned to receive the light, having a plurality of half-wave regions to alter polarization of light passing therethrough, and a plurality of free regions to pass light without altering the polarization; wherein polarization ratio (PR) is defined by PR=(I??I?)/(I?+I?); and wherein the first upstream polarization ratio exhibits a first sign, and both the second upstream polarization ratio and the third upstream polarization ratio exhibit a second sign opposite the first sign.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: April 23, 2019
    Assignees: A.U. VISTA INC., THE UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Hai-Wei Chen, Shin-Tson Wu, Wei Duan, Ming-Chun Li, Seok-Lyul Lee
  • Publication number: 20190103571
    Abstract: An ultrabright bright quantum dot light-emitting diode (QLED) device and associated method of manufacture. The QLED device includes quantum dots (QD) as emitters and a mixture of metal oxide nanoparticles and alkali metal compounds for simultaneous electron injection and hole blocking to achieve charging balance at high driving current conditions. The ultrabright QLEDs are useful for many light source applications including, but not limited to display, solid state lighting, optical sensor, phototherapy, photomedicine and photobiomedicine.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Inventors: Yajie Dong, Hao Chen, Shin-Tson Wu, Juan He
  • Patent number: 10115327
    Abstract: An optical display system includes an information display (image-generating) component, a polarization dependent image offset optical element and possibly also a polarization rotator. By controlling the image offset optical element either by direct applying voltage or by controlling the polarization of the displayed light through the polarization rotator, the display pixels can be switched by a certain portion. By switching between offset and non-offset state with appropriate image displayed, the resolution as observed by the users can be enhanced.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: October 30, 2018
    Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Yun-Han Lee, Tao Zhan, Guanjun Tan, Fangwang Gou, Fenglin Peng, Shin-Tson Wu
  • Patent number: 10096292
    Abstract: Liquid crystal display (LCD) systems and related methods with pixel elements driven at different frequencies are provided. A representative LCD system includes: a plurality of pixel elements arranged in an array, each of the plurality of pixel elements having a first sub-region and a second sub-region; a low-frequency driving circuit operative to drive each of the first sub-regions; and a high-frequency driving circuit operative to drive each of the second sub-regions at a driving frequency different than a driving frequency of the low-frequency driving circuits; wherein the first sub-regions exhibit a different size than the second sub-regions.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: October 9, 2018
    Assignees: A.U. VISTA INC., THE UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Hai-Wei Chen, Shin-Tson Wu, Yi-Fen Lan, Cheng-Yeh Tsai
  • Publication number: 20180275443
    Abstract: Display devices and related methods involving patterned phase retarding are provided. A representative display device includes: a backlight unit, having a light source and a color conversion layer having an alignment direction, the light comprising a first light exhibiting a first upstream polarization ratio, a second light exhibiting a second upstream polarization ratio, and a third light exhibiting a third upstream polarization ratio; and a patterned phase retarder positioned to receive the light, having a plurality of half-wave regions to alter polarization of light passing therethrough, and a plurality of free regions to pass light without altering the polarization; wherein polarization ratio (PR) is defined by PR=(l??l?)/(l?+l?); and wherein the first upstream polarization ratio exhibits a first sign, and both the second upstream polarization ratio and the third upstream polarization ratio exhibit a second sign opposite the first sign.
    Type: Application
    Filed: March 21, 2017
    Publication date: September 27, 2018
    Inventors: Hai-Wei Chen, Shin-Tson Wu, Wei Duan, Ming-Chun Li, Seok-Lyul Lee
  • Patent number: 9927666
    Abstract: A representative LCD system includes: liquid crystal material disposed between first and second substrates; protrusions supported by the first substrate and arranged in an array, each of the protrusions extending from a base; first pixel electrodes, with a corresponding one of the first pixel electrodes being positioned adjacent the base of a corresponding one of the protrusions; first common electrodes, with a corresponding one of the first common electrodes being positioned adjacent the base of a corresponding one of the protrusions such that each of the protrusions is positioned between one of the first pixel electrodes and one of the first common electrodes; second pixel electrodes, with a corresponding one of the second pixel electrodes being positioned on a corresponding one of the protrusions; and second common electrodes, with a corresponding one of the second common electrodes being positioned on a corresponding one of the protrusions.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: March 27, 2018
    Assignees: a.u. Vista Inc., The University of Central Florida Research Foundation, Inc.
    Inventors: Yi-Fen Lan, Daming Xu, Cheng-Yeh Tsai, Norio Sugiura, Shin-Tson Wu
  • Publication number: 20180010039
    Abstract: Methods of making luminescent perovskite-polymer composites are provided and structures using the same. Perovskite-polymer composites made by the method described herein are provided. The perovskite-polymer composite is useful in many applications including downconverters for backlight units (BLU) of liquid crystal displays (LCDs), as well as for and could be used for light emitting devices, lasers or as active absorber or passive luminescent concentrators for solar photovoltaic applications.
    Type: Application
    Filed: July 7, 2016
    Publication date: January 11, 2018
    Applicant: University of Central Florida Research Foundation, Inc.
    Inventors: Yajie DONG, Yanan WANG, Shin-Tson WU, Juan HE, Hao CHEN, Jiangshan CHEN
  • Publication number: 20170373459
    Abstract: A polarization volume grating (PVG) includes a bulk, birefringent medium characterized by a plurality of helical structures with helix axes and a periodicity ?y and an anisotropic alignment material having a rotatable optical axis, disposed on a top or bottom surface of the medium. The PVG is characterized in that the optical axis of the alignment material has a continuously rotated optical axis orientation in a plane of the material surface and a periodicity ?x, wherein the helix axes are normal to the optical axes in the alignment material surface, further wherein the birefringent medium is characterized by a plurality of controllably slanted refractive index planes having a slant angle ?=±arctan (?y/?x) and a Bragg period ?B. Fabrication methods are disclosed.
    Type: Application
    Filed: June 23, 2017
    Publication date: December 28, 2017
    Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Yishi Weng, Daming Xu, Shin-Tson Wu
  • Publication number: 20170307942
    Abstract: A representative LCD system includes: liquid crystal material disposed between first and second substrates; protrusions supported by the first substrate and arranged in an array, each of the protrusions extending from a base; first pixel electrodes, with a corresponding one of the first pixel electrodes being positioned adjacent the base of a corresponding one of the protrusions; first common electrodes, with a corresponding one of the first common electrodes being positioned adjacent the base of a corresponding one of the protrusions such that each of the protrusions is positioned between one of the first pixel electrodes and one of the first common electrodes; second pixel electrodes, with a corresponding one of the second pixel electrodes being positioned on a corresponding one of the protrusions; and second common electrodes, with a corresponding one of the second common electrodes being positioned on a corresponding one of the protrusions.
    Type: Application
    Filed: April 20, 2016
    Publication date: October 26, 2017
    Inventors: Yi-Fen Lan, Daming Xu, Cheng-Yeh Tsai, Norio Sugiura, Shin-Tson Wu
  • Publication number: 20170249917
    Abstract: Liquid crystal display (LCD) systems and related methods with pixel elements driven at different frequencies are provided. A representative LCD system includes: a plurality of pixel elements arranged in an array, each of the plurality of pixel elements having a first sub-region and a second sub-region; a low-frequency driving circuit operative to drive each of the first sub-regions; and a high-frequency driving circuit operative to drive each of the second sub-regions at a driving frequency different than a driving frequency of the low-frequency driving circuits; wherein the first sub-regions exhibit a different size than the second sub-regions.
    Type: Application
    Filed: February 26, 2016
    Publication date: August 31, 2017
    Inventors: Hai-Wei Chen, Shin-Tson Wu, Yi-Fen Lan, Cheng-Yeh Tsai
  • Patent number: 9680132
    Abstract: A display device including a substrate, a light absorption layer, an optical matching layer, a first transparent electrode, a light emitting layer, and a second transparent electrode is provided. The light absorption layer is disposed on the substrate, and the optical matching layer is disposed on the light absorption layer. The first transparent electrode is disposed on the optical matching layer, the light emitting layer is disposed on the first transparent electrode, and the second transparent electrode is disposed on the light emitting layer. An output luminance and a reflectance of ambient light are controlled by adjusting refractive indices of the optical matching layer and the light absorption layer.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: June 13, 2017
    Assignees: Industrial Technology Research Institute, University of Central Florida Research Foundation, Inc.
    Inventors: Yi-Shou Tsai, Kuo-Chang Lee, Shin-Tson Wu, Guan-Jun Tan, Rui-Dong Zhu
  • Publication number: 20170155095
    Abstract: A display device including a substrate, a light absorption layer, an optical matching layer, a first transparent electrode, a light emitting layer, and a second transparent electrode is provided. The light absorption layer is disposed on the substrate, and the optical matching layer is disposed on the light absorption layer. The first transparent electrode is disposed on the optical matching layer, the light emitting layer is disposed on the first transparent electrode, and the second transparent electrode is disposed on the light emitting layer. An output luminance and a reflectance of ambient light are controlled by adjusting refractive indices of the optical matching layer and the light absorption layer.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 1, 2017
    Inventors: Yi-Shou Tsai, Kuo-Chang Lee, Shin-Tson Wu, Guan-Jun Tan, Rui-Dong Zhu
  • Patent number: 9664945
    Abstract: A display apparatus including a display panel, a first polarizer and a second polarizer is provided. The display panel includes a pixel array substrate, an opposite substrate and a display medium. The pixel array substrate includes a plurality of pixel units. Each pixel unit includes a first electrode and a second electrode. The first electrode and the second electrode are alternately arranged and a lateral electric field is existed between the first electrode and the second electrode. The opposite substrate is disposed opposite to the pixel array substrate. The display medium is disposed between the pixel array substrate and the opposite substrate. The first polarizer is disposed on the pixel array substrate. The second polarizer is disposed on the opposite substrate. An included angle between an optical axis of the first polarizer and an optical axis of the second polarizer is 90°±?, and ? is 1° to 9°.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: May 30, 2017
    Assignees: Au Optronics Corporation, University of Central Florida Research Foundation, Inc.
    Inventors: Yi-Fan Liu, Shin-Tson Wu, Yi-Fen Lan, Cheng-Yeh Tsai
  • Patent number: 9513426
    Abstract: The disclosure provides a display backlight unit and its light down conversion film. The light down conversion film may include a quantum-dot layer sandwiched between input substrate and an exit substrate. First and second refractive asymmetric micro-prisms are disposed on two opposite input and first exit surfaces of the input substrate, respectively. On the input surface of the input substrate, multiple arrays of the asymmetric refractive asymmetric micro-prisms preserve the large off-axis angle of incident light with first wavelength. On the first exit surface of the input substrate, multiple arrays of the refractive asymmetric micro-prisms increase the reflectance of the large incident angle light. A second exit surface of the exit substrate includes refractive symmetric micro-prisms. The refractive asymmetric micro-prisms of the input substrate and the refractive asymmetric micro-prisms of the exit substrate have rounded tips and valleys for enhancing refraction of the first light and the second light.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: December 6, 2016
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Qi Hong, Shin-Tson Wu, Kuo-Chang Lee