Patents by Inventor Yao-Dong Ma

Yao-Dong Ma 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: 20210098544
    Abstract: The present invention relates to an AMOLED display, more specifically, to an AMOLED display employing an ultra-thin all-in-one substrate and an auxiliary supporting means to achieve true foldable display devices.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 1, 2021
    Inventors: Yao-Dong Ma, Blair Ma
  • Publication number: 20200233254
    Abstract: The present invention relates to a reflective liquid crystal display, more specifically, to a cholesteric liquid crystal display employing a TFT substrate with mirror pixel electrode array to achieve ultra-high reflectivity. The display provides not only with video speed motion pictures but also with excellent paper-like bistable images.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 23, 2020
    Inventor: Yao-dong Ma
  • Publication number: 20150002781
    Abstract: The current invention relates to sunlight readable full color active matrix liquid crystal display devices. By means of an electric controllable light shutter, both the internal backlight and the external sunlight can be used for lighting the display so as to deliver superior readability and color quality. The display shutter, including passive and active light shutter, can be also worked as the second display.
    Type: Application
    Filed: June 29, 2013
    Publication date: January 1, 2015
    Inventor: YAO-DONG MA
  • Publication number: 20140043565
    Abstract: The current invention relates to a sunlight readable full color active matrix liquid crystal display devices. By means of a novel Directional Light Guiding (DLG) film structure, both the internal backlight and the external sunlight can be used synergistically for lighting the display so as to deliver superior readability and color quality. A seamless transition between indoor and outdoor applications makes the vivid true color display an ideal solution to portable electronics.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 13, 2014
    Applicant: MacroDisplay Inc
    Inventor: YAO-DONG MA
  • Patent number: 8363204
    Abstract: The present invention relates to an optical enhancement film, more specifically, to a cholesteric reflective polarizer film, which is characterized by matching and compensating the emitting spectrum of a white LED backlight for LCD TVs and Monitors. The film not only enhances the brightness of the LED-backlit displays by light recycling effect but also increases the color rendering quality of the LED-backlit displays by phase balancing effect.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: January 29, 2013
    Assignee: MacroDisplay Inc.
    Inventor: Yao-Dong Ma
  • Patent number: 8300183
    Abstract: The present invention relates to a liquid crystal display, more specifically, to a single layer reflective full color cholesteric display employing full spectrum circularly polarization. The display has not only zero-field long time memory but also paper-like super high brightness and contrast.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: October 30, 2012
    Assignee: MacroDisplay Inc.
    Inventor: Yao-Dong Ma
  • Publication number: 20120229718
    Abstract: The preset invention relates to a three-dimensional LCD, and more specifically to a rigid lenticular three dimensional LCD with an air layer and spacer structure which allows realignment and readjustment of the coordination of the lenticular film relative to the display panel so that the 3D effect can be micro-controllable when it is needed to display 3D video images and moving pictures.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 13, 2012
    Inventors: Yinkuei Huang, Kuo Tai Tsai, Yao-Dong Ma, Chiung-Sen Lu
  • Publication number: 20120147315
    Abstract: The present invention relates to an optical enhancement film, more specifically, to a cholesteric reflective polarizer film, which is characterized by matching and compensating the emitting spectrum of a white LED backlight for LCD TVs and Monitors. The film not only enhances the brightness of the LED-backlit displays by light recycling effect but also increases the color rendering quality of the LED-backlit displays by phase balancing effect.
    Type: Application
    Filed: December 8, 2010
    Publication date: June 14, 2012
    Inventor: Yao-Dong Ma
  • Publication number: 20120120350
    Abstract: The present invention relates to a liquid crystal display, more specifically, to a single layer reflective full color cholesteric display employing full spectrum circularly polarization. The display has not only zero-field long time memory but also paper-like super high brightness and contrast.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 17, 2012
    Inventor: Yao-Dong Ma
  • Patent number: 7853288
    Abstract: The present invention relates to a mobile phone device, more specifically, to a sunlight illuminated and sunlight readable mobile phone device. The display panel opens a transparent window to the ambient light, which allows the sunlight to illuminate the display in both indoor and outdoor applications. A light collecting panel is introduced to reflect or transform the external light with a suitable angle relative to the display panel. A mobile phone with sufficient high contrast ratio, superior readability and ultra wide color gamut has been achieved. The solar light can be utilized as the lighting source in both indoor and outdoor display modes, thus remarkably reduces the power consumption and substantially prolongs the operation time of the rechargeable battery.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: December 14, 2010
    Inventor: Yao-Dong Ma
  • Patent number: 7564518
    Abstract: This invention relates to a high brightness and high contrast ratio reflective cholesteric displays employing circular polarizers. The front circular polarizer has a predetermined polarity that is opposite both to the Bragg reflection of the display and to the back reflective circular polarizer. An absorptive weak polarizer with high transmittance is adopted in the display system. In the black-and-white display mode, the white state is achieved in the cholesteric focal conic texture area; and the black state is obtained in the cholesteric planar texture area. In the full color mode, the full color state is created by the micro-color filter in the cholesteric focal conic texture area; and the black state is realized in the cholesteric planar texture area.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: July 21, 2009
    Inventor: Yao-Dong Ma
  • Publication number: 20090061945
    Abstract: The present invention relates to a mobile phone device, more specifically, to a sunlight illuminated and sunlight readable mobile phone device. The display panel opens a transparent window to the ambient light, which allows the sunlight to illuminate the display in both indoor and outdoor applications. A light collecting panel is introduced to reflect or transform the external light with a suitable angle relative to the display panel. A mobile phone with sufficient high contrast ratio, superior readability and ultra wide color gamut has been achieved. The solar light can be utilized as the lighting source in both indoor and outdoor display modes, thus remarkably reduces the power consumption and substantially prolongs the operation time of the rechargeable battery.
    Type: Application
    Filed: August 30, 2007
    Publication date: March 5, 2009
    Inventor: Yao-Dong Ma
  • Patent number: 7427140
    Abstract: The present invention relates to a sunlight readable computing device, especially, to a full color direct-view and projection-view computing device. When the computing device works in the direct-view mode, the display panel tilt up to the conventional display position and it has a wide, open viewing angle; when the computing device works in the projection view mode, the display panel tilt down and forms a projection image via a mirror plate with a sufficient high contrast ratio and superior readability even directly under sunshine. The solar ambient light can be utilized as the lighting source in both direct-view and projection-view display modes, thus remarkably reduces the power consumption and substantially prolongs the operation time of the computing device.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: September 23, 2008
    Inventor: Yao-Dong Ma
  • Publication number: 20080018833
    Abstract: This invention relates to a high brightness and high contrast ratio reflective cholesteric displays employing circular polarizers. The front circular polarizer has a predetermined polarity that is opposite both to the Bragg reflection of the display and to the back reflective circular polarizer. An absorptive weak polarizer with high transmittance is adopted in the display system. In the black-and-white display mode, the white state is achieved in the cholesteric focal conic texture area; and the black state is obtained in the cholesteric planar texture area. In the full color mode, the full color state is created by the micro-color filter in the cholesteric focal conic texture area; and the black state is realized in the cholesteric planar texture area.
    Type: Application
    Filed: June 10, 2005
    Publication date: January 24, 2008
    Inventor: Yao-Dong Ma
  • Patent number: 7095466
    Abstract: The present invention relates to a circular polarizer, more specifically, to a diffusively reflective circular polarizer (DRCP), which is characterized by broadband reflection and transmission over a hemispheric viewing angle. A thermo phase separation process of a cholesteric liquid crystal polymer system creates the DRCP film. As a multi-functional optical material, the DRCP film combines the merits of polarizer, reflector and diffuser to form an all-in-one component in the electro-optical industry. Moreover, since the novel film has a “silver white” appearance and super “hiding power”, it will initiate many other applications.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: August 22, 2006
    Inventor: Yao-Dong Ma
  • Publication number: 20050259055
    Abstract: A pixelized driving means for cholesteric liquid crystal display comprises driving waveforms and related circuitry employing one voltage level. The first pulse with a voltage level and sufficient pulse duration can erase a single pixel to the planar texture; while the second pulse with the same voltage level but relatively short pulse duration will be able to address a single pixel to the focal conic texture. Though the pulse-height and the pulse-width are fixed as required, the number of the pulses can be digitally controlled. Thus, the driving means generates a unique solution for selectively activating an element of the display into a designated optical state without any visual impact on the rest elements.
    Type: Application
    Filed: November 15, 2002
    Publication date: November 24, 2005
    Inventor: Yao-Dong Ma
  • Publication number: 20050117095
    Abstract: The present invention relates to cholesteric displays, and more specifically, to reflective cholesteric displays employing linear polarizer(s). Two display modes have been accomplished and both of them take on black-and-white appearances. The addition of the weak linear polarizer has greatly increased the brightness of the white color while maintaining the black darkness.
    Type: Application
    Filed: December 2, 2003
    Publication date: June 2, 2005
    Inventor: Yao-Dong Ma
  • Publication number: 20050116909
    Abstract: The present invention relates to a liquid crystal display, especially, to a video speed STN display with high contrast ratio. The display provides not only a flicker-free video speed with 30 frames per second, but also a high display quality, such as full color gamut, high contrast ratio and high brightness and so on. The video speed display is realized by the optimization of the display cell structure, the liquid crystal formulation and the driving circuitry.
    Type: Application
    Filed: December 2, 2003
    Publication date: June 2, 2005
    Inventor: Yao-Dong Ma
  • Patent number: 6873393
    Abstract: This invention relates to reflective cholesteric displays without using Bragg reflection. The helical pitch of the cholesteric liquid crystals may or may not be tuned in a visible wavelength, but its Bragg reflection will never be displayed. An elliptical polarizer with properly designed retardation and lamination positioned at the front of the display will be able to eliminate the Bragg reflection over a large viewing cone. The function of the display cell structure is merely a light shutter to switch the incident light ON and OFF. In the black-and-white display mode, the white state is achieved from the metal reflection in the cholesteric planar texture area; and the black state is obtained by cholesteric's depolarization effect and polarizer's filtration effect in the cholesteric focal conic texture area.
    Type: Grant
    Filed: June 15, 2002
    Date of Patent: March 29, 2005
    Inventor: Yao-Dong Ma
  • Publication number: 20050057707
    Abstract: The present invention relates to cholesteric displays, more specifically, to reflective cholesteric displays employing a backside circular polarizer. In the paper white mode, the bright white state is achieved in display's focal conic texture area; and the dark color state is obtained in display's planar texture area. In the full color mode, meanwhile, the full color state is created in the focal conic texture area; and the dark color state is achieved in the cholesteric focal conic texture area. Either the absorptive circular polarizer or the reflective broadband circular polarizer can be used as the backside polarizer. A bright neutral white color with 50% front light reflection has been accomplished in the novel display.
    Type: Application
    Filed: September 17, 2003
    Publication date: March 17, 2005
    Inventor: Yao-Dong Ma