Patents by Inventor Jeong-ho Nho

Jeong-ho Nho 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: 20110227814
    Abstract: A display apparatus and a light source module are provided. The display apparatus includes: a display unit; and a light source module providing light so that an image is displayed on the display unit, the light source module including: a light emitting element which emits the light; a base substrate on which the light emitting element; and a cooling unit including: a capillary tube forming part which a capillary tube inside the base substrate and extending between a first area and a second area farther away from the light emitting element than the first area, and coolant which travels between the first area and the second area in the capillary tube according to a change in phase caused by heat from the light emitting element to transfer the heat from the first area to the second area, and which cools the emitted heat.
    Type: Application
    Filed: July 30, 2010
    Publication date: September 22, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-hyun PARK, Jeong-ho NHO, Nam-gyu LIM, Sung-tae KIM
  • Publication number: 20110025990
    Abstract: An optical system is provided. The optical system includes an illumination system and a projection system. The illumination system includes a light source, a light guide unit, a first relay lens and a second relay lens, a reflection mirror, a reflection lens, and an image unit which are arranged sequentially along a light axis. The reflection lens includes a first surface which is coated with light-transmitting material and a second surface which has a reflection coating surface so that the light passing through the first surface is reflected.
    Type: Application
    Filed: January 20, 2010
    Publication date: February 3, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sung-tae Kim, Jeong-ho Nho
  • Publication number: 20110010617
    Abstract: Provided are an apparatus and method for displaying a document, the document display apparatus including an image processor which displays a document including a plurality of pages; a memory unit which stores individual unit elements constituting the document and image data including the individual unit elements; and a controller which controls the image processor to generate the image data corresponding to at least one page estimated to be turned to among the plurality of pages, store the image data in the memory unit, and display the image data corresponding to a requested page among the stored image data when a user requests a page transition. With this, the page transition speed may be improved through image caching.
    Type: Application
    Filed: April 23, 2010
    Publication date: January 13, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung-jae KIM, Ki-hong PARK, Jeong-ho NHO
  • Publication number: 20110001936
    Abstract: An optical system is provided. The optical system includes a luminous system which comprises a plurality of light source devices and an image unit; and a projection system which receives light having an image through the luminous system, and enlarges and projects the light, wherein the plurality of light source devices comprise a reflection member which reflects light beam emitted from the light source devices, and are disposed so that the light beam emitted from the light source devices is reflected by the reflection member one time and enters to the image unit.
    Type: Application
    Filed: November 16, 2009
    Publication date: January 6, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyun PARK, Jeong-ho NHO, Sung-tae KIM, Won-yong LEE, Yong-Dok CHA
  • Publication number: 20100231532
    Abstract: A touch sensing system which senses a touch position on a screen, including a light source to emit light; a light deflection unit to deflect the light emitted from the light source, a light guide plate which is arranged opposite to the screen and guides the light deflected by the light deflection unit to different positions on the screen according to an incident position, a light detector to receive at least part of the light reflected in a touch position on the screen, and a controller to calculate the touch position on the screen based on a point of time when the light detector detects the light.
    Type: Application
    Filed: September 2, 2009
    Publication date: September 16, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jeong-ho Nho, Yong-dok Cha
  • Patent number: 7745996
    Abstract: A film adhered on a display panel includes a black layer for preventing an external light from entering into the display panel, and a reflective layer for preventing light emitted from the display panel from being absorbed in the black layer. The film minimizes the influence of an external light and improves transmittance, thereby providing a user with a good-quality picture.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: June 29, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-hwan Lim, Jeong-ho Nho, Seok-il Yoon, Wook-jae Jeon, Dae-hee Lee
  • Patent number: 7413314
    Abstract: An optical system having an iris controlled in real time and a control method of amount of light thereof. The optical system includes a light source, a light modulator modulating a light emitted from the light source to a certain image, a driving part controlling the light modulator to produce the certain image and outputting luminance information of the certain image, a projector projecting the certain image, a screen on which the projected image is formed, a projection iris controlling an amount of light projected from the light modulator onto the screen, and a iris controller receiving the luminance information of the certain image from the driving part and controlling the projection iris corresponding to the luminance information of the certain image. Since the opening range of the iris is controlled in real time, the contrast ratio (C/R) is improved.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: August 19, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-tae Kim, Jeong-ho Nho
  • Patent number: 7401930
    Abstract: A projection system is provided. The projection system includes a light source, a color filter separating light emitted from the light source into colored light, a light-path converter converting a path of the colored light that has passed through the color filter, a lens having a positive refractive power in order to condense the light from the light-path converter, a display device processing the light that has passed through the lens in response to an input signal and forming a color image, and a projection lens unit enlarging and projecting the color image onto a screen.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: July 22, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-tae Kim, Jeong-ho Nho
  • Publication number: 20080117359
    Abstract: A backlight unit, includes: a surface light source which emits a light; and a diffusion collimation member which is provided in a path of the light emitted by the surface light source, and comprises a first diffusion sheet having a plurality of first reflectors arranged in a first direction and a second diffusion sheet formed on the first diffusion sheet and having a plurality of second reflectors arranged in a second direction forming a predetermined angle with respect to the first direction of the first diffusion sheet.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 22, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok-il Yoon, Jeong-ho Nho, Yung-jun Park, Myung-ryul Jung, Wook-jae Jeon, Dae-hee Lee
  • Publication number: 20080007835
    Abstract: A film adhered on a display panel includes a black layer for preventing an external light from entering into the display panel, and a reflective layer for preventing light emitted from the display panel from being absorbed in the black layer. The film minimizes the influence of an external light and improves transmittance, thereby providing a user with a good-quality picture.
    Type: Application
    Filed: February 8, 2007
    Publication date: January 10, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-hwan Lim, Jeong-ho Nho, Seok-il Yoon, Wook-jae Jeon, Dae-hee Lee
  • Publication number: 20070296931
    Abstract: Provided are a focusing apparatus of an optical projection device having a simple structure and capable of a precisely in focusing and a projection optical system. The focusing apparatus includes: a frame including a female screw part having a first pitch; a body tube moveably installed in the frame and comprising a male screw part having a second pitch smaller than the first pitch; and an adjusting ring including a male screw part corresponding to the female screw part having the first pitch and a female screw part corresponding to the male screw part having the second pitch to support the body tube in the frame and move the body tube toward an optical axis direction.
    Type: Application
    Filed: April 10, 2007
    Publication date: December 27, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-jun Choi, Jeong-ho Nho
  • Publication number: 20070290946
    Abstract: A display panel includes a plurality of light guides which emit received light, and a plurality of external light blocking members which are disposed between exit surfaces of the plurality of light guides, and block light from the outside. Accordingly, the bright room contrast of the PDP is enhanced.
    Type: Application
    Filed: March 19, 2007
    Publication date: December 20, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok-il Yoon, Jeong-ho Nho, Sung-hwan Lim, Wook-jae Jeon, Dae-hee Lee
  • Publication number: 20070285790
    Abstract: A display panel is disclosed. The display panel includes an upper substrate through which light used for an image display passes and a plurality of light guides collecting and emitting the light transmitted through the upper substrate. The display panel may further include anti-reflective part, EMI shielding part, infrared filtering part or glass substrate to increase the bright room contrast or to improve the image displayed by the display panel.
    Type: Application
    Filed: March 20, 2007
    Publication date: December 13, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Seok-il Yoon, Jeong-ho Nho, Sung-hwan Lim, Wook-jae Jeon, Dae-hee Lee
  • Publication number: 20070165194
    Abstract: An image display apparatus comprises a plurality of light sources, each of which outputs light having a different color than the other light sources, and a digital micro mirror device (DMD) panel having a plurality of mirror elements. The plurality of mirror elements reflect light output from the light sources in one of a first direction, for displaying an image, and a second direction different from the first direction. The apparatus further includes a detecting part which detects the quantity of light reflected in the second direction by at least one mirror element of the DMD panel, and an adjusting control part which determines the quantity of light output from the respective light sources based on the detection by the detecting part, and which adjusts light output of the light sources based on the determined quantity of light output from the light sources.
    Type: Application
    Filed: January 10, 2007
    Publication date: July 19, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-min Jung, Jeong-ho Nho, Koichi Sono, Yong-Dok Cha
  • Publication number: 20060227304
    Abstract: An optical assembly for a projection system includes a light tunnel, a light tunnel holder that supports the light tunnel, an exterior casing that supports the light tunnel holder, a resilient member disposed between the light tunnel holder and the exterior casing to resiliently support the light tunnel holder, and an aligning unit that is disposed opposite the resilient member to align the light tunnel. The aligning unit can have at least one holder protrusion formed on an outer surface of the light tunnel holder, and a movable member that has a pressing protrusion for contact with the holder protrusion. The movable member slides on the outside of the light tunnel holder.
    Type: Application
    Filed: February 22, 2006
    Publication date: October 12, 2006
    Inventors: Byung-jo Kang, Jeong-ho Nho, Jong-hak Moon, Sung-je Woo, Kyoung-choul Jang, Heong-seog Lee
  • Publication number: 20060176452
    Abstract: A light tunnel and a projection apparatus having the same provide an improved degree of optical separation and an improved image forming efficiency. The light tunnel standardizes the intensity distribution of light emitted from a light source. The light tunnel comprises an incident plane and an emitting plane for the light. In addition, the size of the emitting plane is larger than that of the incident plane, and the emitting plane is inclined at a certain angle (?) relative to the incident plane. With this configuration, the degree of optical separation and image forming efficiency of an illumination light is improved. The improved degree of optical separation also improves the contrast ratio, while allowing a compact optical system.
    Type: Application
    Filed: February 6, 2006
    Publication date: August 10, 2006
    Inventors: Jin-sik Kim, Sung-tae Kim, Jeong-ho Nho, Kee-uk Jeon
  • Publication number: 20050275812
    Abstract: A projection system is provided. The projection system includes a light source, a color filter separating light emitted from the light source into colored light, a light-path converter converting a path of the colored light that has passed through the color filter, a lens having a positive refractive power in order to condense the light from the light-path converter, a display device processing the light that has passed through the lens in response to an input signal and forming a color image, and a projection lens unit enlarging and projecting the color image onto a screen.
    Type: Application
    Filed: June 14, 2005
    Publication date: December 15, 2005
    Inventors: Sung-tae Kim, Jeong-ho Nho
  • Publication number: 20050264707
    Abstract: An image forming apparatus and a projection TV set having the same are provided. The image forming apparatus includes an illumination system including a light source; a color separator separating beams irradiated from the light source into separate colored beams; at least one light-path converter bending the beam irradiated from the light source upwards; and a display device processing the incident beam in response to an input signal and forming a color image; and a projection system enlarging and projecting the color image formed by the illumination system onto a screen, wherein an optical axis of the beam emitted from the light source and an optical axis of the beam reflected by the display device are disposed by the at least one light-path converter at different heights such that the illumination system and the projection system extend to be narrow in a widthwise direction and long in a lengthwise direction.
    Type: Application
    Filed: May 16, 2005
    Publication date: December 1, 2005
    Inventors: Sung-tae Kim, Jeong-ho Nho
  • Publication number: 20050200817
    Abstract: An optical system having an iris controlled in real time and a control method of amount of light thereof The optical system includes a light source, a light modulator modulating a light emitted from the light source to a certain image, a driving part controlling the light modulator to produce the certain image and outputting luminance information of the certain image, a projector projecting the certain image, a screen on which the projected image is formed, a projection iris controlling an amount of light projected from the light modulator onto the screen, and a iris controller receiving the luminance information of the certain image from the driving part and controlling the projection iris corresponding to the luminance information of the certain image. Since the opening range of the iris is controlled in real time, the contrast ratio (C/R) is improved.
    Type: Application
    Filed: March 8, 2005
    Publication date: September 15, 2005
    Inventors: Sung-tae Kim, Jeong-ho Nho
  • Publication number: 20030128304
    Abstract: A projection lens unit of a projection television (TV) includes a first lens group for focusing an image incident from an image generating source, a reflection mirror for reflecting the image projected from the first lens group, and a second lens group having the same optical axis as the optical axis of the first lens group for magnifying and projecting the image reflected from the reflection mirror to a screen. The first and second lens groups are installed in first and second single bodies, which are coupled to a third single body having the reflection mirror to reflect the image incident from the first single body to the second single body. By this arrangement, the focus of the projection lens unit is easily adjusted and the lens groups are conveniently coupled to each other. In addition, a defocused state of the projection lens unit can be easily minimized.
    Type: Application
    Filed: January 8, 2003
    Publication date: July 10, 2003
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Min Park, Jeong-Ho Nho