Patents by Inventor Byoung-jin CHO

Byoung-jin CHO 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: 10818209
    Abstract: A display apparatus includes a display panel receiving light from a light source. The display panel includes a liquid crystal panel, first and second polarizers respectively disposed on front and rear sides of the liquid crystal panel, and an optical layer disposed on a front surface of the second polarizer. The optical layer includes a first resin layer having light absorption portions for absorbing a portion of incident light, a second resin layer disposed on a front surface of the first resin layer, the second resin layer having a higher refractive index than the first resin layer, the second resin layer having light diffusion portions for diffusing light not absorbed by the light absorption portions.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: October 27, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Chol Lee, Wook-Jae Jeon, Tae Ik Kim, Il Yong Jung, Byoung-Jin Cho, Jun Sung Choi
  • Patent number: 10809554
    Abstract: A display apparatus includes a display panel that displays an image, a light source that supplies light to the display panel, a middle mold positioned between the display panel and the light source, and a quantum dot sheet positioned between the display panel and the middle mold that converts a wavelength of light emitted from the light source, and the middle mold includes a color compensator having blue color that provides uniform white light to outside of the display panel.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: October 20, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon Ki Park, Nae Won Jang, Won Yeop Jang, Byoung Jin Cho
  • Patent number: 10782463
    Abstract: A display panel and a display apparatus including the display panel are provided. The display apparatus includes: a display panel; and a backlight unit configured to supply light to the display panel, wherein the display panel includes: a liquid crystal layer; a first polarizing plate disposed between the backlight unit and the liquid crystal layer; and a second polarizing plate facing the first polarizing plate with the liquid crystal layer disposed therebetween, and containing a light absorbing agent for absorbing light of a specific wavelength band, wherein the first polarizing plate includes: a first polarizing layer including a plurality of refracting layers having different refractive indexes; and at least one second polarizing layer disposed on the first polarizing layer.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: September 22, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nae-Won Jang, Byoung-Jin Cho, Seung Jun Jeong
  • Publication number: 20200133075
    Abstract: A white light emitting device, including a circuit board; a plurality of light sources mounted on the circuit board, each light source of the plurality of light sources configured to emit monochromatic light; a light converter spaced apart from the circuit board, the light converter configured to convert the monochromatic light emitted from the light sources to white light; and a compensator provided between the circuit board and the light converter, the compensator configured to convert the emitted monochromatic light to white light.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 30, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Pil JEON, Jong-hoi KIM, Kye Hoon LEE, Dae-hee LEE, Byoung-Jin CHO, Suk-ju CHOI
  • Publication number: 20200096823
    Abstract: Disclosed is a display apparatus including a display panel; and a light source assembly including: a plurality of first light sources disposed in a first region to supply first light toward the display panel; a light guide plate including: incident surface configured to receive second light; and an exit surface facing the display panel and configured to transmit the second light received from the incident surface of the light guide plate to the display panel; and a plurality of second light sources disposed on a periphery of the first region to supply the second light to the incident surface of the light guide plate.
    Type: Application
    Filed: September 20, 2019
    Publication date: March 26, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Bin KIM, Byoung Jin CHO, Young Chol LEE, Ho Seok LEE, Nae Won JANG, Suk Ju CHOI
  • Publication number: 20200073177
    Abstract: A display apparatus includes a display panel, LEDs disposed behind the display panel and spaced from the display panel to emit light toward the display panel, a bottom chassis having a rear portion on which the LEDs are disposed, and a reflective member disposed inside the bottom chassis and configured to reflect light incident from the LEDs toward the display panel. The reflective member includes a reflective inclined portion obliquely formed to face a rear surface of side portions of the display panel, first regions that respectively correspond to LEDs located adjacent the reflective inclined portion, and second regions provided between two neighboring first regions respectively and having a reflective characteristic different from a reflective characteristic of at least one among the two neighboring first regions.
    Type: Application
    Filed: September 10, 2019
    Publication date: March 5, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin CHO, Young Man Ahn, Dae Hee Lee, Nae Won Jang, Hyeong Sik Choi
  • Publication number: 20200050046
    Abstract: A display apparatus includes a display panel that displays an image, a light source that supplies light to the display panel, a middle mold positioned between the display panel and the light source, and a quantum dot sheet positioned between the display panel and the middle mold that converts a wavelength of light emitted from the light source, and the middle mold includes a color compensator having blue color that provides uniform white light to outside of the display panel
    Type: Application
    Filed: June 4, 2019
    Publication date: February 13, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon Ki PARK, Nae Won JANG, Won Yeop JANG, Byoung Jin CHO
  • Patent number: 10558098
    Abstract: Provided is a display apparatus including a liquid crystal panel and a shutter panel, wherein the shutter panel includes a shutter layer configured to change a polarizing axis of light transmitted through a selected area, a shutter polarizing layer disposed on a front surface of the shutter layer, and configured to transmit light having the polarizing axis changed by the shutter layer, and a quantum rod layer disposed on a rear surface of the shutter layer, and configured to convert a wavelength of light that is incident to the shutter panel, and to transmit light having a polarizing axis of a predetermined direction to the shutter layer. Therefore, the display apparatus may implement a local dimming structure and improve the optical efficiency.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: February 11, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin Cho, Nae Won Jang, Seung Hun Chae
  • Patent number: 10545375
    Abstract: A white light emitting device, including a circuit board; a plurality of light sources mounted on the circuit board, each light source of the plurality of light sources configured to emit monochromatic light; a light converter spaced apart from the circuit board, the light converter configured to convert the monochromatic light emitted from the light sources to white light; and a compensator provided between the circuit board and the light converter, the compensator configured to convert the emitted monochromatic light to white light.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: January 28, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Pil Jeon, Jong-hoi Kim, Kye Hoon Lee, Dae-hee Lee, Byoung-jin Cho, Suk-ju Choi
  • Patent number: 10488703
    Abstract: A display apparatus having enhanced color reproduction, and a display apparatus including a light absorption sheet that absorbs light having a wavelength corresponding to yellow light and/or orange light in the light are provided. The display apparatus includes: a backlight unit; a liquid crystal panel configured to selectively block light emitted from the backlight according to an electric field; and a light absorption sheet disposed on a front side of the liquid crystal panel for absorbing light having a predetermined range of wavelength.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: November 26, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nae-Won Jang, Young Chol Lee, Byoung-Jin Cho, Wook-Jae Jeon, Seung Hun Chae
  • Patent number: 10444424
    Abstract: A display device includes a light source to emit light, a light guide plate on which the light emitted from the light source is incident and which irradiates light through a first and a second surface of the light guide plate, a quantum dot sheet on which the light irradiated through the first surface of the light guide plate is incident and which irradiates blue light, green light and red light, a reflective sheet for reflecting the irradiated light to the light guide plate, and a light-converting material at an edge portion of the light guide plate, the quantum dot sheet and the reflective sheet, for converting the light into a yellow light, green light or red light. The light incident on the quantum dot sheet includes the light emitted from the light source and the yellow light, the green light or the red light.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: October 15, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung-Jin Cho, Dae-hee Lee, Kye Hoon Lee, Nae-Won Jang
  • Patent number: 10437103
    Abstract: A display apparatus includes a display panel, LEDs disposed behind the display panel and spaced from the display panel to emit light toward the display panel, a bottom chassis configured to accommodate the LEDs, and a reflective member disposed inside the bottom chassis and configured to reflect a light portion incident thereon toward the display panel. The reflective member includes a reflective bottom portion corresponding to a front surface of the bottom chassis, and reflective inclined portions obliquely formed to face a rear surface of the display panel and having a plurality of holes thereon. The reflective inclined portions include a first region that corresponds to an LED and a second region that is between two neighboring LEDs, and the first region has a higher hole density than the second region, and the first region is closer to the LED than the second region.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: October 8, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin Cho, Young Man Ahn, Dae Hee Lee, Nae Won Jang, Hyeong Sik Choi
  • Patent number: 10330861
    Abstract: Disclosed herein are a quantum dot unit having an improved structure for improving color reproducibility, a quantum dot sheet having the same, and a display device having the quantum dot unit or the quantum dot sheet. The display device includes a display panel configured to display an image, a light source provided to emit light to the display panel, a light guide plate provided to guide the light emitted from the light source to the display panel, and a quantum dot unit disposed between the light source and the light guide plate to change a wavelength of the light emitted from the light source and having ductility, wherein the quantum dot unit includes a glass fiber having a hollow portion and a quantum dot accommodated in the hollow portion.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: June 25, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nae-Won Jang, Young Chol Lee, Byoung-Jin Cho, Seung Hun Chae
  • Publication number: 20190129213
    Abstract: Provided is a display apparatus including a liquid crystal panel and a shutter panel, wherein the shutter panel includes a shutter layer configured to change a polarizing axis of light transmitted through a selected area, a shutter polarizing layer disposed on a front surface of the shutter layer, and configured to transmit light having the polarizing axis changed by the shutter layer, and a quantum rod layer disposed on a rear surface of the shutter layer, and configured to convert a wavelength of light that is incident to the shutter panel, and to transmit light having a polarizing axis of a predetermined direction to the shutter layer. Therefore, the display apparatus may implement a local dimming structure and improve the optical efficiency.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 2, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin CHO, Nae Won JANG, Seung Hun CHAE
  • Publication number: 20190122597
    Abstract: A display apparatus includes a display panel receiving light from a light source. The display panel includes a liquid crystal panel, first and second polarizers respectively disposed on front and rear sides of the liquid crystal panel, and an optical layer disposed on a front surface of the second polarizer. The optical layer includes a first resin layer having light absorption portions for absorbing a portion of incident light, a second resin layer disposed on a front surface of the first resin layer, the second resin layer having a higher refractive index than the first resin layer, the second resin layer having light diffusion portions for diffusing light not absorbed by the light absorption portions.
    Type: Application
    Filed: October 9, 2018
    Publication date: April 25, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Chol LEE, Wook-Jae JEON, Tae Ik KIM, Il Yong JUNG, Byoung-Jin CHO, Jun Sung CHOI
  • Publication number: 20190113665
    Abstract: A display panel and a display apparatus including the display panel are provided. The display apparatus includes: a display panel; and a backlight unit configured to supply light to the display panel, wherein the display panel includes: a liquid crystal layer; a first polarizing plate disposed between the backlight unit and the liquid crystal layer; and a second polarizing plate facing the first polarizing plate with the liquid crystal layer disposed therebetween, and containing a light absorbing agent for absorbing light of a specific wavelength band, wherein the first polarizing plate includes: a first polarizing layer including a plurality of refracting layers having different refractive indexes; and at least one second polarizing layer disposed on the first polarizing layer.
    Type: Application
    Filed: October 17, 2018
    Publication date: April 18, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nae-Won JANG, Byoung-Jin CHO, Seung Jun JEONG
  • Publication number: 20190079351
    Abstract: A display apparatus includes a display panel, LEDs disposed behind the display panel and spaced from the display panel to emit light toward the display panel, a bottom chassis configured to accommodate the LEDs, and a reflective member disposed inside the bottom chassis and configured to reflect a light portion incident thereon toward the display panel. The reflective member includes a reflective bottom portion corresponding to a front surface of the bottom chassis, and reflective inclined portions obliquely formed to face a rear surface of the display panel and having a plurality of holes thereon. The reflective inclined portions include a first region that corresponds to an LED and a second region that is between two neighboring LEDs, and the first region has a higher hole density than the second region, and the first region is closer to the LED than the second region.
    Type: Application
    Filed: November 13, 2018
    Publication date: March 14, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin CHO, Young Man AHN, Dae Hee LEE, Nae Won JANG, Hyeong Sik CHOI
  • Patent number: 10175532
    Abstract: A display module includes a display panel; a backlight unit which is disposed behind the display panel; a bottom chassis to accommodate the backlight unit; and a reflective sheet which is disposed inside the bottom chassis and configured to reflect a light portion incident thereon toward the display panel. The backlight unit includes LEDs disposed apart from one another in 2D array, and the reflective sheet includes a sheet bottom portion corresponding to a front surface of the bottom chassis, a sheet inclined portion which is obliquely formed to face a rear surface of the display panel, and light adjustment portions which are provided on the sheet inclined portion and configured to adjust the light portion reflected by the sheet inclined portion. Each of the light adjustment portions corresponds to one of the LEDs disposed adjacent to the sheet inclined portion.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: January 8, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin Cho, Young Man Ahn, Dae Hee Lee, Nae Won Jang, Hyeong Sik Choi
  • Patent number: 10001670
    Abstract: A supporting member usable with a backlight unit of an image display apparatus includes a supporting portion that is formed of a transparent material, disposed below a diffuser plate to support the diffuser plate, and includes a first end being in contact with the diffuser plate and two flat side surfaces disposed in parallel to one another and connected to one another at the first end; a base that is formed at a second end of the supporting portion and fixes the supporting portion to an under chassis of the backlight unit; and a reinforcing portion that is disposed on a top surface of the base.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: June 19, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung-jin Cho, Young-chol Lee, Hyung-chul Kim, Heong-seog Lee, Hyeong-sik Choi
  • Publication number: 20180156966
    Abstract: A display device includes a light source to emit light, a light guide plate on which the light emitted from the light source is incident and which irradiates light through a first and a second surface of the light guide plate, a quantum dot sheet on which the light irradiated through the first surface of the light guide plate is incident and which irradiates blue light, green light and red light, a reflective sheet for reflecting the irradiated light to the light guide plate, and a light-converting material at an edge portion of the light guide plate, the quantum dot sheet and the reflective sheet, for converting the light into a yellow light, green light or red light. The light incident on the quantum dot sheet includes the light emitted from the light source and the yellow light, the green light or the red light.
    Type: Application
    Filed: January 19, 2018
    Publication date: June 7, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung-Jin CHO, Dae-hee LEE, Kye Hoon LEE, Nae-Won JANG