Patents by Inventor Hong-Da Liu

Hong-Da Liu 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: 20120169400
    Abstract: A dual mode touch sensing display includes a display module, and a dual mode touch sensing module disposed at the display module. The dual mode touch sensing module includes a plurality of first conductors, a plurality of second conductors, and a switch unit. The first conductors extend in a first direction. The second conductors extend in a second direction intersecting the first direction. The switch unit includes a first switch circuit coupled to the first conductors and capable of interconnecting at least a portion of the first conductors to form sensing loops, and a second switch circuit coupled to the second conductors and capable of interconnecting at least a portion of the second conductors to form sensing loops.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Inventor: Hong-Da LIU
  • Publication number: 20070029225
    Abstract: A portable information device comprises a machine and a tray having slots to contain cosmetic products or body care products. The tray and machine are combined together such that they are slidable, rotationable, or foldable to each other to expose or hide the slots. Alternatively, in a portable information device, a tray is embedded on a cover of a machine, and a plate is above the cover to expose or hide slots on the tray.
    Type: Application
    Filed: August 4, 2005
    Publication date: February 8, 2007
    Inventors: Chuan Ko, Hong-Da Liu
  • Patent number: 7077557
    Abstract: A surface light source device. A light guide plate has an incident end face, an emitting face, at least one full-reflective face, and a plurality of light adjusters. The full-reflective face reflects light onto the incident end face for direction to the emitting face for transmission. The light adjusters are disposed in the light guide plate with a density discontinuously varied in at least one area of the light guide plate to adjust light collection for emission from the different areas of the emitting face, hereby providing discontinuous light intensity. The light source is disposed in the vicinity of the incident end face.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: July 18, 2006
    Assignee: Wistron Optronics Corporation
    Inventor: Hong-Da Liu
  • Patent number: 7066624
    Abstract: A structure of an ultra-micro reflector having abrasive surface with tapered micro bumps and free of resin layer and its fabrication method are provided. The reflector structure comprises mainly a layer of reflector metal, a scattering element with abrasive surface, and a layer of ITO. The abrasive surface has many tapered micro bumps. The reflector structure can be applied to a reflective or partially reflective LCD to achieve optimal performance. It makes the scattering angle of the reflective light source wider and more uniform. The variation of the gap of liquid crystal cells is greatly reduced, so that the reflective efficiency can be kept in an optimal condition. The reflector structure has larger scattering angle, smooth effect, and very good anti-glare effect. The fabrication process of the reflector structure is simple. The material cost for the abrasive surface is inexpensive.
    Type: Grant
    Filed: August 16, 2003
    Date of Patent: June 27, 2006
    Assignee: Prime View International Corporation Limited
    Inventors: Wen-Jian Lin, Hung-Huei Hsu, Hong-Da Liu
  • Patent number: 7057697
    Abstract: A pixel and its process for an in-plane switching liquid crystal display achieves more spreading angles and smooth performance for scattering of light for image display therewith by using a reflector having a reflective surface with roughness in nanometer scale for light scattering and contrast improvement. As a result, the reflectivity doesn't change enormously with the viewing angle and excellent anti-glare effect is obtained. Moreover, the roughness of the reflective surface is formed by the crystallization and the characteristic of the material thereof owns, and thus no additional mask is required.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: June 6, 2006
    Assignee: M-Display Optronics Corp.
    Inventor: Hong-Da Liu
  • Patent number: 7038749
    Abstract: A reflector structure in a liquid crystal display having light condensing effect comprises mainly an active device substrate, a condenser having diffraction or refraction effect being formed above the substrate, a spacing layer being formed above and covering the condenser, and a reflective unit being formed above the spacing layer. The condenser can be a holographic diffraction unit, micro prisms or micro lens unit. It can be on a TFT substrate or a color filter. The color filter can be located at the same or opposite side with the TFT substrate. The spacing layer may be an over coat layer, a color filter, a color filter and an over coat layer on the color filter, or a substrate. The reflective unit also has various structures, reflective angles, and reflective effects. The invention utilizes the condenser to collect light. 60% to 95% of unused backlight is collected. The backlight gain is over 120% to 400%, thereby greatly saving the power consumption for the backlight source.
    Type: Grant
    Filed: January 15, 2005
    Date of Patent: May 2, 2006
    Assignee: Wistron Optronics Corporation
    Inventor: Hong-Da Liu
  • Patent number: 7033058
    Abstract: A flat display displays images on both sides is disclosed. The flat display includes a liquid crystal molecule layer disposed between two substrates, and a driving array having a plurality of switch devices disposed on one of the substrates. Images are asynchronously displayed on both sides of the flat display by controlling a rotation state of the liquid crystal molecule layer by the driving array in cooperation with a light source provided by a light source module. The light source module includes two light-guiding plates. One of the light-guiding plates is disposed on the substrate having the driving array, and the other light-guiding plate is disposed on the other substrate having a color filter.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: April 25, 2006
    Assignee: Wistron Optronics Corporation
    Inventor: Hong-Da Liu
  • Patent number: 7034908
    Abstract: A reflector structure in a liquid crystal display having light condensing effect comprises mainly an active device substrate, a condenser having diffraction or refraction effect being formed above the substrate, a spacing layer being formed above and covering the condenser, and a reflective unit being formed above the spacing layer. The condenser can be a holographic diffraction unit, micro prisms or micro lens unit. It can be on a TFT substrate or a color filter. The color filter can be located at the same or opposite side with the TFT substrate. The spacing layer may be an over coat layer, a color filter, a color filter and an over coat layer on the color filter, or a substrate. The reflective unit also has various structures, reflective angles, and reflective effects. The invention utilizes the condenser to collect light. 60% to 95% of unused backlight is collected. The backlight gain is over 120% to 400%, thereby greatly saving the power consumption for the backlight source.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: April 25, 2006
    Assignee: Wistron Optronics Corporation
    Inventor: Hong-Da Liu
  • Patent number: 6999146
    Abstract: A reflector structure in a liquid crystal display having light condensing effect comprises mainly an active device substrate, a condenser having diffraction or refraction effect being formed above the substrate, a spacing layer being formed above and covering the condenser, and a reflective unit being formed above the spacing layer. The condenser can be a holographic diffraction unit, micro prisms or micro lens unit. It can be on a TFT substrate or a color filter. The color filter can be located at the same or opposite side with the TFT substrate. The spacing layer may be an over coat layer, a color filter, a color filter and an over coat layer on the color filter, or a substrate. The reflective unit also has various structures, reflective angles, and reflective effects. The invention utilizes the condenser to collect light. 60% to 95% of unused backlight is collected. The backlight gain is over 120% to 400%, thereby greatly saving the power consumption for the backlight source.
    Type: Grant
    Filed: January 15, 2005
    Date of Patent: February 14, 2006
    Assignee: m-Display Optronics Corporation
    Inventor: Hong-Da Liu
  • Patent number: 6980269
    Abstract: A thin-film transistor and a liquid crystal display having an ultra minimal rough reflective layer on pixel design are described. An ultra minimal rough reflective layer with an ultra minimal rough surface is formed on a substrate. The ultra minimal rough reflective layer includes an amorphous or partial crystalline indium tin oxide layer and a silicon-containing rugged layer to form the ultra minimal rough surface. A reflective layer conformal to the rugged layer is then formed thereon to obtain an ultra minimal roughness reflective surface, thereby to enhance reflective results.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: December 27, 2005
    Assignee: M-Display Optronics Corp.
    Inventor: Hong-Da Liu
  • Publication number: 20050280624
    Abstract: Providing a set of calibration gamma curves, and applying different driving voltages to corresponding positions of an LCD according to the set of calibration gamma curves so that at a same gray scale and at a same fundamental color, brightness is identical and no chromatic aberration occurs in all the positions of the LCD.
    Type: Application
    Filed: June 11, 2004
    Publication date: December 22, 2005
    Inventor: Hong-Da Liu
  • Publication number: 20050263766
    Abstract: A pixel of a thin film transistor array substrate and a method for making the same are used to reduce exposure time and prevent the pixel from being exposed to light beams with uneven light intensity in a photolithography process, where the light beams with uneven light intensity resulting from protrusions of a stage in an exposure apparatus may result in forming undesired patterns in the pixel. The pixel includes a light-shielding layer formed below a photosensitive layer to shelter portions of the pixel from the light beams in order to prevent the light beams from irradiating the protrusions of the stage. Additionally, the light-shielding layer comprising a multi-layer reflective film or a metallic material with high reflectivity functions to reflect the light beams to irradiate the photosensitive layer again, thereby reducing the exposure time required by the photolithography process.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 1, 2005
    Inventor: Hong-Da LIU
  • Publication number: 20050128403
    Abstract: A pixel and its process for an in-plane switching liquid crystal display achieves more spreading angles and smooth performance for scattering of light for image display therewith by using a reflector having a reflective surface with roughness in nanometer scale for light scattering and contrast improvement. As a result, the reflectivity doesn't change enormously with the viewing angle and excellent anti-glare effect is obtained. Moreover, the roughness of the reflective surface is formed by the crystallization and the characteristic of the material thereof owns, and thus no additional mask is required.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 16, 2005
    Inventor: Hong-Da Liu
  • Publication number: 20050128385
    Abstract: A pixel structure for an LCoS display comprises a pixel electrode, an insulator formed on the pixel electrode by CMP, reflectors formed on the insulator by micro-electro-mechanical process, a passivation formed on the reflectors and the insulator by CMP, a conductor on the passivation, a layer of liquid crystal above the conductor, and a glass plate having common electrode thereon above the layer of liquid crystal. Each of the reflectors has an oblique metal plate, gratings or a planar metal plate with multilayer coating of different refractive indexes thereon, so as to reflect an oblique incident light for a reflective light produced at specific angles by diffraction or refraction and out of the glass plate.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 16, 2005
    Inventor: Hong-Da Liu
  • Publication number: 20050122448
    Abstract: A reflector structure in a liquid crystal display having light condensing effect comprises mainly an active device substrate, a condenser having diffraction or refraction effect being formed above the substrate, a spacing layer being formed above and covering the condenser, and a reflective unit being formed above the spacing layer. The condenser can be a holographic diffraction unit, micro prisms or micro lens unit. It can be on a TFT substrate or a color filter. The color filter can be located at the same or opposite side with the TFT substrate. The spacing layer may be an over coat layer, a color filter, a color filter and an over coat layer on the color filter, or a substrate. The reflective unit also has various structures, reflective angles, and reflective effects. The invention utilizes the condenser to collect light. 60% to 95% of unused backlight is collected. The backlight gain is over 120% to 400%, thereby greatly saving the power consumption for the backlight source.
    Type: Application
    Filed: January 15, 2005
    Publication date: June 9, 2005
    Inventor: Hong-Da Liu
  • Publication number: 20050122449
    Abstract: A reflector structure in a liquid crystal display having light condensing effect comprises mainly an active device substrate, a condenser having diffraction or refraction effect being formed above the substrate, a spacing layer being formed above and covering the condenser, and a reflective unit being formed above the spacing layer. The condenser can be a holographic diffraction unit, micro prisms or micro lens unit. It can be on a TFT substrate or a color filter. The color filter can be located at the same or opposite side with the TFT substrate. The spacing layer may be an over coat layer, a color filter, a color filter and an over coat layer on the color filter, or a substrate. The reflective unit also has various structures, reflective angles, and reflective effects. The invention utilizes the condenser to collect light. 60% to 95% of unused backlight is collected. The backlight gain is over 120% to 400%, thereby greatly saving the power consumption for the backlight source.
    Type: Application
    Filed: January 15, 2005
    Publication date: June 9, 2005
    Inventor: Hong-Da Liu
  • Publication number: 20050117369
    Abstract: A surface light source device. A light guide plate has an incident end face, an emitting face, at least one full-reflective face, and a plurality of light adjusters. The full-reflective face reflects light onto the incident end face for direction to the emitting face for transmission. The light adjusters are disposed in the light guide plate with a density discontinuously varied in at least one area of the light guide plate to adjust light collection for emission from the different areas of the emitting face, hereby providing discontinuous light intensity. The light source is disposed in the vicinity of the incident end face.
    Type: Application
    Filed: March 31, 2004
    Publication date: June 2, 2005
    Inventor: Hong-Da Liu
  • Publication number: 20050094403
    Abstract: A flat panel display with high brightness. The flat panel display comprises a panel and a light module. The panel has a plurality of pixels. The transmittivity of each pixel or the ratio of the transmissive area of each pixel to the area of the pixel exhibits a first distribution function. The light module supplies light to illuminate the panel. The intensity of the light exhibits a second distribution function. In the flat panel display, the distribution of the brightness of the panel is improved by controlling of the transmittivity of each pixel or the area ratio of the transmissive area, to attain a better visual quality.
    Type: Application
    Filed: March 26, 2004
    Publication date: May 5, 2005
    Inventor: Hong-Da Liu
  • Patent number: 6882395
    Abstract: A wide viewing angle fringe field multi-domain vertically aligned LCD panel and a method for fabricating the panel are disclosed. The LCD panel can be constructed by a first light-missive transmissive substrate, an electrically conductive layer coated on an inside surface of the first light-transmissive substrate to form a first electrode, the layer is substantially optically transparent; a second light transmissive substrate; and electrically conductive grid of horizontal and vertical bars coated on an inside surface of the second light-transmissive substrate to form a second electrode; a cavity formed between the two inside surfaces of the first and second light transmissive substrates and a peripheral seal when the two substrates are positioned together in a spaced-apart relationship; and a liquid crystal material filling the cavity.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: April 19, 2005
    Assignee: Industrial Technology Research Institute
    Inventor: Hong-Da Liu
  • Publication number: 20050073512
    Abstract: A display having a plurality of display regions includes at least a first display region and a second display region being of different display modes, a first pixel array and a second pixel array, and a first driving array and a second driving array. The driving arrays are used to control the image display of the display regions of the display.
    Type: Application
    Filed: February 26, 2004
    Publication date: April 7, 2005
    Inventor: Hong-Da LIU