Patents by Inventor Yong-dok Cha

Yong-dok Cha 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).

  • Patent number: 10775655
    Abstract: A display apparatus includes a bottom chassis, a display panel provided in front of the bottom chassis, and a cover film configured to cover the display panel and being fixable to the bottom chassis. With this configuration, a bezel may be minimized (e.g., reduced in size) or eliminated, and the display efficiency may be improved.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 15, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-Mo Yoo, Seung Hun Chae, Han Mi Choi, Young Chol Lee, Nae-Won Jang, Jong Pil Jeon, Yong Dok Cha, Jean Hur
  • Patent number: 10401679
    Abstract: The display apparatus reflects the light emitted from the light source to a display panel using a reflective member without a member such as a light guide plate. The reflective member is configured so that the light emitted from the light source can be provided uniformly and introduced uniformly to the display panel. Even if a board with the light source disposed at a side of the reflective member, the light emitted from the light source can be radiated substantially uniformly to the entire area of the display panel by the reflective surface of the reflective member.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: September 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong Dok Cha, Jong Bin Kim, Jeong Shan Na, Young Chol Lee, Jae Hak Cho, Jean Hur
  • Patent number: 10317732
    Abstract: A display apparatus includes a plurality of light sources that are arranged in several rows at different intervals so that light emitted from the plurality of light sources may reach all regions of a display panel uniformly. Accordingly, a uniform dispersion of the light incident on the display panel may be achieved. Furthermore, distribution of light generated from the plurality of light sources on the display panel may be facilitated through a reflecting unit without the use of a light-guide plate or the like.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: June 11, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Young Kim, Jong Bin Kim, Hyung Ki Kim, Young Min Lee, Young-Wook Jung, Jae Hak Cho, Yong Dok Cha
  • Publication number: 20180004033
    Abstract: A display apparatus includes a bottom chassis, a display panel provided in front of the bottom chassis, and a cover film configured to cover the display panel and being fixable to the bottom chassis. With this configuration, a bezel may be minimized (e.g., reduced in size) or eliminated, and the display efficiency may be improved.
    Type: Application
    Filed: June 28, 2017
    Publication date: January 4, 2018
    Inventors: Jun-Mo YOO, Seung Hun CHAE, Han Mi CHOI, Young Chol LEE, Nae-Won JANG, Jong Pil JEON, Yong Dok CHA, Jean HUR
  • Publication number: 20170261813
    Abstract: The display apparatus reflects the light emitted from the light source to a display panel using a reflective member without a member such as a light guide plate. The reflective member is configured so that the light emitted from the light source can be provided uniformly and introduced uniformly to the display panel. Even if a board with the light source disposed at a side of the reflective member, the light emitted from the light source can be radiated substantially uniformly to the entire area of the display panel by the reflective surface of the reflective member.
    Type: Application
    Filed: March 9, 2017
    Publication date: September 14, 2017
    Inventors: Yong Dok CHA, Jong Bin KIM, Jeong Shan NA, Young Chol LEE, Jae Hak CHO, Jean HUR
  • Publication number: 20170184920
    Abstract: A display apparatus includes a plurality of light sources that are arranged in several rows at different intervals so that light emitted from the plurality of light sources may reach all regions of a display panel uniformly. Accordingly, a uniform dispersion of the light incident on the display panel may be achieved. Furthermore, distribution of light generated from the plurality of light sources on the display panel may be facilitated through a reflecting unit without the use of a light-guide plate or the like.
    Type: Application
    Filed: November 3, 2016
    Publication date: June 29, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Young KIM, Jong Bin KIM, Hyung Ki KIM, Young Min LEE, Young-Wook JUNG, Jae Hak CHO, Yong Dok CHA
  • Patent number: 9664990
    Abstract: An illumination apparatus is provided, including a light source unit which includes at least one laser diode emitting light of a single color; a diffuser plate which disperses the light emitted from the light source unit; a fly-eye lens array which transmits light dispersed by the diffuser plate; and a fluorescent unit on which light transmitted by the fly-eye lens array is incident and which emits white light.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: May 30, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-tae Kim, Yong-Dok Cha
  • Patent number: 9645477
    Abstract: Provided is a polarization light emitting diode (LED) module including: a casing comprising an opening; a light source configured to emit light; a reflective polarizer configured to transmit first polarized light of the light emitted from the light source through the opening of the casing toward an external polarization converter, and configured to reflect second polarized light of the light emitted from the light source toward the light source; and a reflector configured to reflect light, which is reflected from the reflective polarizer and traveling toward the light source, toward the reflective polarizer, wherein the light source, the reflective polarizer and the reflector are provided inside the casing.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: May 9, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong-Dok Cha, Sung-tae Kim
  • Publication number: 20150309399
    Abstract: An illumination apparatus is provided, including a light source unit which includes at least one laser diode emitting light of a single color; a diffuser plate which disperses the light emitted from the light source unit; a fly-eye lens array which transmits light dispersed by the diffuser plate; and a fluorescent unit on which light transmitted by the fly-eye lens array is incident and which emits white light.
    Type: Application
    Filed: April 23, 2015
    Publication date: October 29, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-tae KIM, Yong-Dok CHA
  • Patent number: 9154774
    Abstract: A stereoscopic imaging system to prevent deterioration in brightness and optical characteristics due to deviation of an optical axis upon formation of a stereoscopic image is provided. The stereoscopic imaging system includes a stereoscopic image display device to output linearly polarized light, a phase difference plate provided at a front surface of the stereoscopic image display device and which converts the linearly polarized light output from the stereoscopic image display device into circularly polarized light, and liquid crystal shutter glasses having a phase difference plate attached to a front surface thereof and which restores the circularly polarized light having passed through the phase difference plate into the linearly polarized light. Upon formation of a stereoscopic image, the liquid crystal shutter glasses may restore light output from the stereoscopic image display device without loss.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Yong Dok Cha
  • Publication number: 20150234260
    Abstract: Provided is a polarization light emitting diode (LED) module including: a casing comprising an opening; a light source configured to emit light; a reflective polarizer configured to transmit first polarized light of the light emitted from the light source through the opening of the casing toward an external polarization converter, and configured to reflect second polarized light of the light emitted from the light source toward the light source; and a reflector configured to reflect light, which is reflected from the reflective polarizer and traveling toward the light source, toward the reflective polarizer, wherein the light source, the reflective polarizer and the reflector are provided inside the casing.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 20, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong-Dok CHA, Sung-tae KIM
  • Publication number: 20150226971
    Abstract: A head-mount type display apparatus includes: a display configured to display an image; a light guide plate configured to transmit light which enters the light guide plate through a light incident surface formed at a first side of the light guide plate; a plurality of first split mirrors configured to be arranged in sequence along a first direction, and reflect light so that light from the display can be split in the first direction and enter the light incident surface; and a plurality of second split mirrors configured to be arranged in sequence along a second direction, split light transmitted through the light guide plate in the second direction, and reflect the split light so that the image displayed on the display can be recognized.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 13, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-tae KIM, Yong-Dok CHA
  • Patent number: 9057941
    Abstract: Provided is a front reflection screen for a front projection display apparatus. The front reflection screen includes a reflection layer configured to reflect an incident light including an image light projected from a projector and an external light, and a tint layer disposed before the reflection layer and including light absorbing particles to block a portion of the incident light.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: June 16, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-ho Nho, Sung-tae Kim, Sang-hyun Sohn, Won-yong Lee, Yong-Dok Cha
  • Patent number: 8830150
    Abstract: Three-dimensional (3D) glasses according to the present disclosure are interconnected to a 3D display apparatus and include: a glass unit, a glass driving unit which drives the glass unit, an infrared (IR) sensor unit which receives a sync signal transmitted from the 3D display apparatus, a window unit which, when the 3D glasses are directed to the 3D display apparatus, transmits the sync signal to the IR sensor unit and transmits external IR light, incident from a direction different from the direction of the 3D display apparatus, away from the IR sensor unit, and a controlling unit which controls the glass driving unit based on the sync signal.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: September 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-ho Nho, Yong-Dok Cha
  • Publication number: 20140139914
    Abstract: Provided is a front reflection screen for a front projection display apparatus. The front reflection screen includes a reflection layer configured to reflect an incident light including an image light projected from a projector and an external light, and a tint layer disposed before the reflection layer and including light absorbing particles to block a portion of the incident light.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 22, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jeong-ho NHO, Sung-tae KIM, Sang-hyun SOHN, Won-yong LEE, Yong-Dok CHA
  • Patent number: 8414129
    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: Grant
    Filed: November 16, 2009
    Date of Patent: April 9, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyun Park, Jeong-ho Nho, Sung-tae Kim, Won-yong Lee, Yong-dok Cha
  • Patent number: 8395601
    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: Grant
    Filed: September 2, 2009
    Date of Patent: March 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-ho Nho, Yong-dok Cha
  • Patent number: 8384846
    Abstract: A backlight unit including: a light emitting diode (LED) module including a metal substrate and an LED which is disposed on a first side of the metal substrate; a frame on which the LED module is mounted; a first mounting portion formed lengthwise on the LED module; and a second mounting portion formed on the frame, the second mounting portion remaining within a width of the LED module.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: February 26, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyun Park, Myung-ryul Jung, Yong-dok Cha, Jun-seok Park
  • Publication number: 20120050628
    Abstract: A stereoscopic imaging system to prevent deterioration in brightness and optical characteristics due to deviation of an optical axis upon formation of a stereoscopic image is provided. The stereoscopic imaging system includes a stereoscopic image display device to output linearly polarized light, a phase difference plate provided at a front surface of the stereoscopic image display device and which converts the linearly polarized light output from the stereoscopic image display device into circularly polarized light, and liquid crystal shutter glasses having a phase difference plate attached to a front surface thereof and which restores the circularly polarized light having passed through the phase difference plate into the linearly polarized light. Upon formation of a stereoscopic image, the liquid crystal shutter glasses may restore light output from the stereoscopic image display device without loss.
    Type: Application
    Filed: August 16, 2011
    Publication date: March 1, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Yong Dok CHA
  • Publication number: 20110292010
    Abstract: Three-dimensional (3D) glasses according to the present disclosure are interconnected to a 3D display apparatus and include: a glass unit, a glass driving unit which drives the glass unit, an infrared (IR) sensor unit which receives a sync signal transmitted from the 3D display apparatus, a window unit which, when the 3D glasses are directed to the 3D display apparatus, transmits the sync signal to the IR sensor unit and transmits external IR light, incident from a direction different from the direction of the 3D display apparatus, away from the IR sensor unit, and a controlling unit which controls the glass driving unit based on the sync signal.
    Type: Application
    Filed: March 18, 2011
    Publication date: December 1, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-ho NHO, Yong-Dok CHA