Patents by Inventor Dae-Ho Choo

Dae-Ho Choo 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: 20080223297
    Abstract: In a method of manufacturing an LCD device, an atomic beam is irradiated onto a thin film including a carbon-carbon double bond to form a polarized functional group by transforming the carbon-carbon double bond into a carbon-carbon single bond and a radical state. Then, a polarity preserving material is combined with the polarized functional group so as to preserve a polarity of the polarized functional group. According to the present invention, the alignment film is formed on the thin film transistor unit cell and on the color filter unit cell by a non-contact method. Therefore, time of forming the alignment film is reduced and alignment of the liquid crystal molecules is improved.
    Type: Application
    Filed: April 28, 2008
    Publication date: September 18, 2008
    Inventors: Dae-Ho Choo, Hak-Jin Kim, Bong-Woo Lee
  • Patent number: 7405878
    Abstract: In a method of transforming light, an optical film for performing the method and a display device having the optical film, an optical film includes an anisotropic film, an isotropic film, a ?/4 phase difference film and a ?/2 phase difference film. The anisotropic film having a first refractive index with respect to a first ray and a second refractive index with respect to a second ray. A refractive index of the isotropic film is substantially identical to the first refractive index. The ?/4 phase difference film delays wavelengths of the first and second rays by about ?/4. The ?/2 phase difference film delays the wavelength of the second ray by about ?/2.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: July 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Ho Choo, Jin-Hyuk Yun, Ho-Min Kang
  • Patent number: 7379150
    Abstract: A method of manufacturing a liquid crystal display is provided, which includes: forming a sealant on a first panel; dropping liquid crystal on the first panel to form a plurality of liquid crystal dots; assembling a second panel with the first panel, wherein the first and the second panels have a striped array of pixel areas, each stripe extending in a first direction, and a first distance in the first direction between the liquid crystal dots is equal to or smaller than a second distance in a second direction perpendicular to the first direction between the liquid crystal dots.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: May 27, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Ho Choo, Suk Ki
  • Patent number: 7374798
    Abstract: In a method of manufacturing an LCD device, an atomic beam is irradiated onto a thin film including a carbon-carbon double bond to form a polarized functional group by transforming the carbon-carbon double bond into a carbon-carbon single bond and a radical state. Then, a polarity preserving material is combined with the polarized functional group so as to preserve a polarity of the polarized functional group. According to the present invention, the alignment film is formed on the thin film transistor unit cell and on the color filter unit cell by a non-contact method. Therefore, time of forming the alignment film is reduced and alignment of the liquid crystal molecules is improved.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: May 20, 2008
    Assignee: Samsung Electronics, Co. Ltd.
    Inventors: Dae-Ho Choo, Hak-Jin Kim, Bong-Woo Lee
  • Publication number: 20080106691
    Abstract: A method of manufacturing a liquid crystal display is provided, which includes: forming a sealant on a first panel; dropping liquid crystal on the first panel to form a plurality of liquid crystal dots; assembling a second panel with the first panel, wherein the first and the second panels have a striped array of pixel areas, each stripe extending in a first direction, and a first distance in the first direction between the liquid crystal dots is equal to or smaller than a second distance in a second direction perpendicular to the first direction between the liquid crystal dots.
    Type: Application
    Filed: January 9, 2008
    Publication date: May 8, 2008
    Inventors: Dae-Ho Choo, Suk Ki
  • Publication number: 20080100781
    Abstract: The present invention relates to a liquid crystal display (LCD) and a method of manufacturing the same. In the present invention, a wire grid polarizing pattern is formed on at least one of thin film transistor and color filter substrates in a manufacturing process thereof. According to the present invention, the thickness of an LCD panel can be reduced as compared with a method of attaching an existing polarizer to an LCD panel, and the wire grid polarizing pattern can be built in an LCD panel without increasing the number of masking processes.
    Type: Application
    Filed: October 25, 2007
    Publication date: May 1, 2008
    Inventors: Dae Ho CHOO, Yang Ahn, Yeong Yu
  • Publication number: 20080100779
    Abstract: A method of forming a wire grid polarizing pattern across the relatively large surface area of a display substrate is disclosed where the method includes using a nano imprint lithograph process. According to the disclosure, in forming the wire grid polarizing patterns using nano imprint lithography process, wire grid polarizing patterns are formed by bonding a stamp having a stamping area substantially smaller than that of the substrate with successive reticle areas of the substrate, where the substrate has a photosensitive film deposited thereon and where the stamping is such that recesses having a predetermined depth are formed in the photosensitive film, and then filling the recesses with an insulating film and etching it using the insulating film as a mask.
    Type: Application
    Filed: October 25, 2007
    Publication date: May 1, 2008
    Inventors: Dae Ho CHOO, Yeon Hee Yu, Hong Gyun Kim
  • Publication number: 20080049442
    Abstract: Disclosed are a light emitting device and a display device using the same. The light emitting device includes a first electrode formed on a top surface of a substrate and a second electrode formed on a top surface of the light emitting layer. The light emitting layer auxiliary light emitting particles that convert the path of light, so that brightness of the light emitting device and the display device is improved.
    Type: Application
    Filed: September 19, 2006
    Publication date: February 28, 2008
    Inventors: Dae-Ho Choo, Ho-Min Kang, Yang-Suk Ahn
  • Publication number: 20080041816
    Abstract: Systems and methods for manufacturing wire grid polarizers include a deposition unit for forming a thin metal film layer on a substrate, a coating unit for applying a photoresist on the thin metal film layer and for baking the photoresist, a stamping unit, including a stamp having a pattern formed thereon, for pressing the stamp onto the photoresist and thereby transferring the pattern of the stamp to the photoresist, and a curing unit for curing the photoresist.
    Type: Application
    Filed: December 29, 2006
    Publication date: February 21, 2008
    Inventor: Dae Ho Choo
  • Publication number: 20080030483
    Abstract: Disclosed herein is a touch screen panel, a method of manufacturing the touch screen panel, and a display having the touch screen panel. Ultrasonic excitation and detection transducers are attached to the front surface of the image display unit of a display, thereby implementing the touch screen panel. The substrate of the display, that is, the upper surface of the image display unit is used as a surface acoustic wave propagation medium, so that it is not required to manufacture the touch screen panel in a separate substrate and to attach the substrate, in which the touch screen panel is manufactured, to the image display unit of the display, thereby not only preventing degradation of image quality but also not increasing the thickness and size thereof.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 7, 2008
    Inventors: Dae Ho Choo, Yang Suk Ahn, Yeon Hee Yu
  • Publication number: 20070291199
    Abstract: A liquid crystal display includes a liquid crystal layer and a light supply part providing light to the liquid crystal layer, and the liquid crystal layer and the light supply part are disposed between a first base substrate and a second base substrate. The light supply part is located inside the liquid crystal display to reduce a distance between the light supply part and the liquid crystal layer. Thus, the liquid crystal display may have reduced thickness and weight and enhanced brightness, thereby improving the display characteristics of the display.
    Type: Application
    Filed: February 6, 2007
    Publication date: December 20, 2007
    Inventors: Dae-Ho CHOO, Ho-Min KANG
  • Publication number: 20070284346
    Abstract: A method for manufacturing a polarizer includes forming a conductive thin film layer on a first surface of a substrate. The conductive thin film layer corresponding to a processing line is partially removed by a treatment laser beam irradiated along the processing line. The removing the conductive thin film layer forms a plurality of groove lines on a portion of the substrate from which the conductive thin film is removed and a plurality of striped lines formed on a portion of the substrate on which the conductive thin film remains between the groove lines.
    Type: Application
    Filed: June 5, 2007
    Publication date: December 13, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.,
    Inventor: Dae-Ho CHOO
  • Publication number: 20070268243
    Abstract: According to an embodiment of the present invention a panel assembly includes a first display panel having a first insulation substrate, a second display panel having a second insulation substrate opposite to the first insulation substrate, and a touch sensing unit formed on a surface of the second insulation substrate not facing the first insulation substrate. The touch sensing unit includes an electrostatic induction insulating layer formed on the second insulation substrate, an electrostatic induction pattern layer formed on the electrostatic induction insulating layer along edges of the electrostatic induction insulating layer, and a dielectric layer that covers the electrostatic induction insulating layer and the electrostatic induction pattern layer.
    Type: Application
    Filed: May 15, 2007
    Publication date: November 22, 2007
    Inventors: Dae-Ho Choo, Ho-Min Kang
  • Publication number: 20070247566
    Abstract: A liquid crystal display module comprises a liquid crystal display (LCD) panel, a light source unit that generates light, a wire grid polarizing plate that selectively transmits and reflects light generated from the light source unit, and a light converting unit that can be formed on the wire grid polarizing plate and converts light reflected from the wire grid polarizing plate to transmit the wire grid polarizing plate.
    Type: Application
    Filed: December 6, 2006
    Publication date: October 25, 2007
    Inventor: Dae Ho Choo
  • Publication number: 20070229479
    Abstract: A panel assembly is provided. The panel assembly includes a first panel having a first insulating substrate, and a second panel having a second insulating substrate and a touch sensing portion formed on the second insulating substrate. The first panel and the second panel face each other.
    Type: Application
    Filed: December 12, 2006
    Publication date: October 4, 2007
    Inventors: Dae-Ho Choo, Ho-Min Kang
  • Publication number: 20070200835
    Abstract: A display device is provided with a touch panel includes: a base substrate; a first transparent electrode layer located on the base substrate; an ultrasonic wave guiding layer located on the first transparent electrode layer; a second transparent electrode layer located on the ultrasonic wave guiding layer; an ultrasonic wave transmitting unit and an ultrasonic wave receiving unit located on the second transparent electrode layer; and a protecting layer located on the second transparent electrode layer.
    Type: Application
    Filed: February 28, 2007
    Publication date: August 30, 2007
    Inventors: Dae-Ho Choo, Ho-Min Kang
  • Patent number: 7256848
    Abstract: In a method and apparatus of aligning liquid crystal, a first ion beam is formed. The first ion beam is transformed into a second ion beam having transformed cross-section. The second ion beam advances toward a thin film including carbon-carbon double bond. The second ion beam forms a first angle with respect to the thin film. The second ion beam is transformed into an atomic beam. The atomic beam is irradiated onto the thin film to break the carbon-carbon double bond. The carbon-carbon double bond is broken to form a polarized functional group for aligning a liquid crystal molecule.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: August 14, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Ho Choo, Hwan-Kyeong Jeong, Bong-Woo Lee
  • Publication number: 20070081106
    Abstract: A display device includes silver-molybdenum alloy electrodes having high reflectivity despite annealing temperatures. The display may have a first display substrate, a second display substrate and a liquid crystal layer. The first display substrate includes signal-applying modules (e.g., TFTs) disposed on a first substrate each including an output terminal configured to output a data signal, a patterned insulation layer having contact holes that expose the output terminals, and silver-molybdenum alloy electrodes (made of silver and molybdenum) electrically connected to the output terminals. The silver-molybdenum alloy electrode is employed in the display device, thereby increasing reflectivity of the display device and improving display quality of an image displayed by the display device.
    Type: Application
    Filed: June 23, 2006
    Publication date: April 12, 2007
    Inventors: Sung-Hwan Cho, Ho-Nam Yum, Dae-Ho Choo
  • Publication number: 20070056686
    Abstract: An in-line system for fabricating a liquid crystal display includes a sealer coating unit for coating a sealer onto a first substrate with a plurality of liquid crystal display cell regions a liquid crystal injection unit for dropping a liquid crystal onto the first substrate coated with the sealer, and an assembly unit for assembling the first substrate with the second substrate, A sealer hardening unit hardens the sealer interposed between the first and the second substrate to thereby assemble the first and the second substrate with each other. A substrate cutting unit cuts the first and the second substrates along cutting lines through illuminating a laser beam along the cutting lines such that the first and the second substrates are severed into the liquid crystal display cell regions.
    Type: Application
    Filed: October 31, 2006
    Publication date: March 15, 2007
    Inventors: Dae-Ho Choo, Sang-Jun Lee, Yong-Joon Kwon
  • Publication number: 20070024774
    Abstract: A display device includes a substrate, a first color filter pixel and a second color filter pixel. The substrate includes a first pixel region and a second pixel region adjacent to the first pixel region for displaying an image. The first color filter pixel is formed in the first pixel region to change a white light into a colored light. The first color filter pixel includes a first color layer, and a second color layer on the first color layer. The second color filter pixel is formed in the second pixel region.
    Type: Application
    Filed: June 29, 2006
    Publication date: February 1, 2007
    Inventors: Sung-Hwan Cho, Dae-Ho Choo