Patents by Inventor Jae-Lok Cha

Jae-Lok 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).

  • Publication number: 20230284474
    Abstract: Provided is a display device, comprising a display panel which comprises a first area and a second area located around the first area; and an under-panel sheet which is located under the display panel and overlaps the first area and the second area, wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.
    Type: Application
    Filed: April 27, 2023
    Publication date: September 7, 2023
    Inventors: Youn Hwan JUNG, Kyu Han BAE, Jae Lok CHA, Kang Yong LEE
  • Patent number: 11672139
    Abstract: Provided is a display device, comprising a display panel which comprises a first area and a second area located around the first area; and an under-panel sheet which is located under the display panel and overlaps the first area and the second area, wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: June 6, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn Hwan Jung, Kyu Han Bae, Jae Lok Cha, Kang Yong Lee
  • Patent number: 11018325
    Abstract: An organic light emitting diode display includes an organic light emitting display panel including an upper surface receiving first incident light from outside and a lower surface opposite to the upper surface, a light transmission preventing layer including a base layer and an adhesive layer which is between the base layer and the organic light emitting display panel and bonded thereto, the adhesive layer including a facing surface facing the lower surface and a plurality of patterns protruded from the facing surface toward the organic light emitting display panel to define a plurality of gaps between the lower surface and the facing surface. The adhesive layer includes a light blocking material blocking second incident light which passes through the organic light emitting display panel to the light transmission preventing layer from among the first incident light received by the upper surface of the organic light emitting display panel.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: May 25, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jae-lok Cha
  • Publication number: 20210135152
    Abstract: Provided is a display device, comprising a display panel which comprises a first area and a second area located around the first area; and an under-panel sheet which is located under the display panel and overlaps the first area and the second area, wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 6, 2021
    Inventors: Youn Hwan JUNG, Kyu Han BAE, Jae Lok CHA, Kang Yong LEE
  • Patent number: 10892441
    Abstract: Provided is a display device, comprising a display panel which comprises a first area and a second area located around the first area; and an under-panel sheet which is located under the display panel and overlaps the first area and the second area, wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: January 12, 2021
    Inventors: Youn Hwan Jung, Kyu Han Bae, Jae Lok Cha, Kang Yong Lee
  • Patent number: 10721830
    Abstract: A display device includes a window member having a flat portion and a bent portion connected to the flat portion. A display panel is disposed on a rear surface of the window member and includes a central portion and a corner portion protruding from the central portion and overlapping with the flat portion and the bent portion. A first sealing member is disposed on a rear surface of the display panel and overlaps with the corner portion. A second sealing member is disposed on the rear surface of the window member and is spaced apart from the central portion and the corner portion. A first adhesive contacts the first sealing member and the second sealing member and seals a space which is defined between the first sealing member and the second sealing member in the flat portion.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: July 21, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jae-Lok Cha
  • Publication number: 20200152920
    Abstract: An organic light emitting diode display includes an organic light emitting display panel including an upper surface receiving first incident light from outside and a lower surface opposite to the upper surface, a light transmission preventing layer including a base layer and an adhesive layer which is between the base layer and the organic light emitting display panel and bonded thereto, the adhesive layer including a facing surface facing the lower surface and a plurality of patterns protruded from the facing surface toward the organic light emitting display panel to define a plurality of gaps between the lower surface and the facing surface. The adhesive layer includes a light blocking material blocking second incident light which passes through the organic light emitting display panel to the light transmission preventing layer from among the first incident light received by the upper surface of the organic light emitting display panel.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Inventor: Jae-lok CHA
  • Patent number: 10573848
    Abstract: An organic light emitting diode display includes an organic light emitting display panel including an upper surface receiving first incident light from outside and a lower surface opposite to the upper surface, a light transmission preventing layer including a base layer and an adhesive layer which is between the base layer and the organic light emitting display panel and bonded thereto, the adhesive layer including a facing surface facing the lower surface and a plurality of patterns protruded from the facing surface toward the organic light emitting display panel to define a plurality of gaps between the lower surface and the facing surface. The adhesive layer includes a light blocking material blocking second incident light which passes through the organic light emitting display panel to the light transmission preventing layer from among the first incident light received by the upper surface of the organic light emitting display panel.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: February 25, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jae-lok Cha
  • Publication number: 20190334118
    Abstract: Provided is a display device, comprising a display panel which comprises a first area and a second area located around the first area; and an under-panel sheet which is located under the display panel and overlaps the first area and the second area, wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.
    Type: Application
    Filed: July 8, 2019
    Publication date: October 31, 2019
    Inventors: Youn Hwan JUNG, Kyu Han BAE, Jae Lok CHA, Kang Yong LEE
  • Patent number: 10374191
    Abstract: Provided is a display device, comprising a display panel which comprises a first area and a second area located around the first area; and an under-panel sheet which is located under the display panel and overlaps the first area and the second area, wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 6, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn Hwan Jung, Kyu Han Bae, Jae Lok Cha, Kang Yong Lee
  • Publication number: 20190239374
    Abstract: A display device includes a window member having a flat portion and a bent portion connected to the flat portion. A display panel is disposed on a rear surface of the window member and includes a central portion and a corner portion protruding from the central portion and overlapping with the flat portion and the bent portion. A first sealing member is disposed on a rear surface of the display panel and overlaps with the corner portion. A second sealing member is disposed on the rear surface of the window member and is spaced apart from the central portion and the corner portion. A first adhesive contacts the first sealing member and the second sealing member and seals a space which is defined between the first sealing member and the second sealing member in the flat portion.
    Type: Application
    Filed: January 8, 2019
    Publication date: August 1, 2019
    Inventor: JAE-LOK CHA
  • Publication number: 20190006615
    Abstract: Provided is a display device, comprising a display panel which comprises a first area and a second area located around the first area; and an under-panel sheet which is located under the display panel and overlaps the first area and the second area, wherein the under-panel sheet comprises a buffer member and a strength reinforcing member, wherein the strength reinforcing member is thinner than the buffer member, and a ratio of a thickness of the buffer member to a thickness of the strength reinforcing member is 3 to 6 times.
    Type: Application
    Filed: January 10, 2018
    Publication date: January 3, 2019
    Inventors: Youn Hwan JUNG, Kyu Han BAE, Jae Lok CHA, Kang Yong LEE
  • Patent number: 9941335
    Abstract: A display device is provided. A display panel includes a display area and a pad area. A connector is connected to the pad area. A PCB is connected to the connector. A filling member is disposed between a side surface of the display panel and the connector.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: April 10, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Chun Park, Jeong Seok Oh, Jae Lok Cha
  • Publication number: 20170365820
    Abstract: An organic light emitting diode display includes an organic light emitting display panel including an upper surface receiving first incident light from outside and a lower surface opposite to the upper surface, a light transmission preventing layer including a base layer and an adhesive layer which is between the base layer and the organic light emitting display panel and bonded thereto, the adhesive layer including a facing surface facing the lower surface and a plurality of patterns protruded from the facing surface toward the organic light emitting display panel to define a plurality of gaps between the lower surface and the facing surface. The adhesive layer includes a light blocking material blocking second incident light which passes through the organic light emitting display panel to the light transmission preventing layer from among the first incident light received by the upper surface of the organic light emitting display panel.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 21, 2017
    Inventor: Jae-lok CHA
  • Publication number: 20160073528
    Abstract: A display device is provided. A display panel includes a display area and a pad area. A connector is connected to the pad area. A PCB is connected to the connector. A filling member is disposed between a side surface of the display panel and the connector.
    Type: Application
    Filed: June 25, 2015
    Publication date: March 10, 2016
    Inventors: Jae Chun PARK, Jeong Seok OH, Jae Lok CHA
  • Patent number: 8553169
    Abstract: A display device includes a display panel having an upper surface and being configured to display an image, a mold frame configured to receive the display panel, and a lower receiving member having an inner wall disposed on a peripheral area thereof and being configured to receive mold frame and the display panel. The mold frame includes a peripheral area disposed around an open portion of the mold frame, and a side wall disposed in the peripheral area. The side wall of the mold frame is connected to the inner wall of the lower receiving member, and the panel supporter of the mold frame is disposed on the upper surface of the display panel to support the display panel.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: October 8, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ah-Ram Lee, Jae-Lok Cha, Wal-Hee Kim
  • Patent number: 8403548
    Abstract: One or more embodiments of a backlight assembly include a light guide plate (LGP), a light source module and an optical sheet. The LGP includes a side surface and an upper surface. The light source module includes a power-transmitting member and a plurality of point light sources disposed on the power-transmitting member. A side portion of the power-transmitting member is disposed on a peripheral portion of the upper surface adjacent to the side surface and a light-exiting surface of the point light sources facing the side surface to be adjacent to the side surface. The optical sheet is disposed on the upper surface. A portion of the optical sheet is disposed between a corner portion of the upper surface and the power-transmitting member adjacent to the light-exiting surface. The amount of the light absorbed by a reflective member may be decreased to improve the efficiency of the light.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: March 26, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hwan-Jin Kim, Se-In Chang, Young-Bee Chu, Sang-Hee Lee, Jeong-Seok Oh, Jae-Lok Cha
  • Patent number: 8272774
    Abstract: A light guiding plate to enhance uniformity of brightness and a backlight assembly and a display device having the same in one or more embodiments. In one embodiment, the light guiding plate includes a plurality of the linear shaped prisms on a back surface thereof, and the linear shaped prisms are omitted partially at the incident portion of the light guiding plate such that a non-prism area, connection area, and prism area are formed in stated order from the incident portion end on the back surface of the light guiding plate. Therefore, the display device having the light guiding plate is adapted to increase a uniformity of brightness of the edge type backlight, and the display quality can be improved.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: September 25, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Min Yi, Young-Bee Chu, Jeong-Min Seo, Jae-Lok Cha, Ah-Ram Lee
  • Publication number: 20120133859
    Abstract: A liquid crystal display (LCD) device includes a display module having a liquid crystal panel that forms an image and that includes a screen. The display module also has a backlight unit that emits backlight to the liquid crystal panel, and a lamination film that surrounds the display module. An extension direction of the lamination film formed during manufacture of the lamination film is directed between a horizontal direction and a vertical direction of the screen of the liquid crystal panel.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 31, 2012
    Inventors: Jae-Lok CHA, Jong-Nam Lee
  • Patent number: 8169563
    Abstract: A backlight assembly includes a light source, a light-guide plate, a mold frame and a bottom chassis. The mold frame includes a first bottom portion, a protrusion on a first surface of the first bottom portion and a first sidewall portion on a second surface of the first bottom portion opposite to the first surface of the first bottom portion and facing the light guide plate. The bottom chassis includes a second bottom portion having a hole to receive the protrusion of the first bottom portion, and a second sidewall portion facing the light guide plate. A cross sectional area of a first opening of the hole corresponding to an inner surface of the bottom chassis and contacting the first surface of mold frame is different than a cross sectional area of a second opening of the hole corresponding to an outer surface of the bottom chassis.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: May 1, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-ik Lee, Sang-hee Lee, Jeong-seok Oh, Sang-min Yi, Jae-lok Cha, Ji-Hwan Jang