Patents by Inventor Se-In Chang

Se-In Chang 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: 10243025
    Abstract: A display device includes: a first substrate including a display area and a pad area; a second substrate facing the first substrate; a touch unit on the second substrate; a window on the touch unit, the window covering the display area and the pad area; an adhesive layer between the window and the touch unit and under the window at the pad area; and a first light source unit under the window at the pad area.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: March 26, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: Se-In Chang
  • Patent number: 9323091
    Abstract: A protective film configured to be positioned on a touch panel includes a transparent base material and a plurality of conductive particles included in the base material, and a manufacturing method of a protective film configured to be positioned on a touch panel includes: mixing conductive particles in a transparent base material composition; and pressing the base material composition to form a base material. According to exemplary embodiments, the protective film may reduce input errors by increasing touch sensitivity while protecting the touch panel.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: April 26, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Se-In Chang
  • Publication number: 20150185527
    Abstract: A display device includes: a first substrate including a display area and a pad area; a second substrate facing the first substrate; a touch unit on the second substrate; a window on the touch unit, the window covering the display area and the pad area; an adhesive layer between the window and the touch unit and under the window at the pad area; and a first light source unit under the window at the pad area.
    Type: Application
    Filed: July 29, 2014
    Publication date: July 2, 2015
    Inventor: Se-In Chang
  • Publication number: 20140377520
    Abstract: Disclosed are a window for a display device including a window mother substrate for the display device; and a protective film disposed on the window mother substrate for the display device, wherein the protective film includes a multi-layer structure disposed on the window mother substrate for the display device, a first plastic substrate disposed on the multi-layer structure, and a second plastic substrate disposed on the first plastic substrate, and a display device including the same.
    Type: Application
    Filed: January 17, 2014
    Publication date: December 25, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventor: Se-In CHANG
  • Patent number: 8891039
    Abstract: A display module includes a display panel configured to display an image and a backlight. The backlight includes a light guide panel configured to guide light to the display panel, a light source element configured to supply light to the light guide panel, and a reflection sheet disposed over the light guide panel, wherein a chromaticity compensation layer is formed in the backlight unit. The chromaticity compensation layer formed in the backlight reduces yellowing.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: November 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Se-In Chang
  • Publication number: 20140102762
    Abstract: A protective film configured to be positioned on a touch panel includes a transparent base material and a plurality of conductive particles included in the base material, and a manufacturing method of a protective film configured to be positioned on a touch panel includes: mixing conductive particles in a transparent base material composition; and pressing the base material composition to form a base material. According to exemplary embodiments, the protective film may reduce input errors by increasing touch sensitivity while protecting the touch panel.
    Type: Application
    Filed: July 16, 2013
    Publication date: April 17, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Se-In Chang
  • 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
  • Publication number: 20120182499
    Abstract: A display module includes a display panel configured to display an image and a backlight. The backlight includes a light guide panel configured to guide light to the display panel, a light source element configured to supply light to the light guide panel, and a reflection sheet disposed over the light guide panel, wherein a chromaticity compensation layer is formed in the backlight unit. The chromaticity compensation layer formed in the backlight reduces yellowing.
    Type: Application
    Filed: August 10, 2011
    Publication date: July 19, 2012
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventor: Se-In Chang
  • Patent number: 8057086
    Abstract: A light guide unit for a point light source includes a light incident portion, a first reflecting portion and a second reflecting portion. The light emitted from the point light source enters to the light incident portion. The light incident portion includes an optical pattern diffusing an incident light corresponding to the point light source. The first reflecting portion reflects a first light of the incident light. The second reflecting portion roundly connects the first reflecting portion to the light incident portion and reflects a second light of the incident light.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: November 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwan-Jin Kim, Sang-Hee Lee, Kyoung-Don Lee, Se-In Chang, Jae-Kwang Kim, In-Hyuk Choi, Wal-Hee Kim, Jae-Lok Cha, Ji-Hwan Jang
  • Patent number: 7708443
    Abstract: A light guide unit for a point light source includes a light incident portion, a first reflecting portion and a second reflecting portion. The light emitted from the point light source enters to the light incident portion. The light incident portion includes an optical pattern diffusing an incident light corresponding to the point light source. The first reflecting portion reflects a first light of the incident light. The second reflecting portion roundly connects the first reflecting portion to the light incident portion and reflects a second light of the incident light.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: May 4, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwan-Jin Kim, Sang-Hee Lee, Kyoung-Don Lee, Se-In Chang, Jae-Kwang Kim, In-Hyuk Choi, Wal-Hee Kim, Jae-Lok Cha, Ji-Hwan Jang
  • Publication number: 20090296423
    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: Application
    Filed: March 31, 2009
    Publication date: December 3, 2009
    Inventors: Hwan-Jin Kim, Se-In Chang, Young-Bee Chu, Sang-Hee Lee, Jeong-Seok Oh, Jae-Lok Cha
  • Patent number: 7484875
    Abstract: A light guide unit for a point light source includes a light incident portion, a first reflecting portion and a second reflecting portion. The light emitted from the point light source enters to the light incident portion. The light incident portion includes an optical pattern diffusing an incident light corresponding to the point light source. The first reflecting portion reflects a first light of the incident light. The second reflecting portion roundly connects the first reflecting portion to the light incident portion and reflects a second light of the incident light.
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: February 3, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwan-Jin Kim, Sang-Hee Lee, Kyoung-Don Lee, Se-In Chang, Jae-Kwang Kim, In-Hyuk Choi, Wal-Hee Kim, Jae-Lok Cha, Ji-Hwan Jang
  • Publication number: 20080259249
    Abstract: A display apparatus includes at least one display substrate, a light source which generates light, and a light-guide substrate which guides light generated by the light source to emit light toward the at least one display substrate. The light-guide substrate includes an incident surface adjacent to the light source, a first surface and a second surface. The first surface is extended from the incident surface and includes a first color filter layer which is formed thereon and displays color, and the second surface is opposite to the first surface.
    Type: Application
    Filed: April 16, 2008
    Publication date: October 23, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Se-In Chang
  • Publication number: 20080024697
    Abstract: A liquid crystal display includes: an LC panel assembly for displaying an image; a backlight assembly 145 for providing light to the LC panel assembly; and at least one optical sheet disposed between the LC panel assembly and the backlight assembly, wherein the backlight assembly comprises at least one flexible printed circuit having a body including the light source and a connection portion separable from the body for connecting the body to a source of power.
    Type: Application
    Filed: July 26, 2007
    Publication date: January 31, 2008
    Inventors: Wal-Hee KIM, Se-In Chang, Sang-Hee Lee
  • Patent number: 7248327
    Abstract: Disclosed are a liquid crystal display (LCD) device and a method for assembling the LCD device. The LCD device has a display section for displaying images, a receiving container for receiving the display section, a power supplying section for supplying a power source to the display section, a signal converting section for converting signals from the display section and a securing section for securing the power supplying section and the signal converting section to the receiving container. The power supplying section and the signal converting section are disposed between the display section and the securing section that is directly facing to a rear surface of the receiving container. Accordingly, a total thickness and weight of the LCD device can be minimized and an assembly facility of the LCD device can be improved.
    Type: Grant
    Filed: May 15, 2006
    Date of Patent: July 24, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Ho Ha, Se-In Chang
  • Patent number: 7224416
    Abstract: There are provided a backlight assembly (700) and an LCD device (1000) using the same. The backlight assembly (700) has an optical sheet (100) for improving light efficiency and optical properties thereof and an elastic adhesive member (130) disposed on the optical sheet (100). When the optical sheet (100) deforms with heat, the elastic adhesive member (130) may be expanded or contracted corresponding to deformation of the optical sheet (100) and absorb impact applied to LCD device. Accordingly, the backlight assembly (700) may prevent the optical sheet (100) from being wrinkled or scratched, thereby preventing display quality of the LCD device from being deteriorated.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: May 29, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Guy-Ho Cha, Jong-Dae Park, Se-In Chang, Seok-Won Lee
  • Patent number: 7220045
    Abstract: A backlight assembly includes a receiving container, a reflecting member, a light source, and a diffusion plate. The receiving container includes a bottom plate and a sidewall upwardly protruded from sides of the bottom plate. The sidewall has at least one recess. The reflecting member includes a reflecting part and a fixing part extended from end portions of the reflecting part to be inserted into the at least one recess. The light source is disposed above the reflecting member to generate light. The diffusion plate is disposed above the light source to diffuse the light. As a result, the manufacturing process for fabricating the reflecting member may be simplified and a size of the backlight assembly may be decreased.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: May 22, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Se-In Chang
  • Patent number: 7220043
    Abstract: There is disclosed a backlight assembly for maximizing a light incidence efficiency by changing a construction of a light guide plate and a liquid crystal display device having the same. A light incidence surface of the light guide plate receiving a light from a lamp is inclined to make an obtuse angle with a light-emitting surface through which the light is transferred to the display unit. An open surface of a lamp cover that is disposed to face towards the light incidence surface is formed to have the same inclined angle as the light incidence surface of the light guide plate. In addition, a light reflecting plate and an optical sheet are respectively disposed on the top and bottom surfaces of the light guide plate, on which light absorbing layers, for absorbing light that leaks from the light guide plate, are formed at both ends thereof.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: May 22, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Guy-Ho Cha, Sung-Yong Kang, Se-In Chang
  • Patent number: RE44574
    Abstract: Disclosed are a liquid crystal display (LCD) device and a method for assembling the LCD device. The LCD device has a display section for displaying images, a receiving container for receiving the display section, a power supplying section for supplying a power source to the display section, a signal converting section for converting signals from the display section and a securing section for securing the power supplying section and the signal converting section to the receiving container. The power supplying section and the signal converting section are disposed between the display section and the securing section that is directly facing to a rear surface of the receiving container. Accordingly, a total thickness and weight of the LCD device can be minimized and an assembly facility of the LCD device can be improved.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: November 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Ho Ha, Se-In Chang
  • Patent number: RE47371
    Abstract: Disclosed are a liquid crystal display (LCD) device and a method for assembling the LCD device. The LCD device has a display section for displaying images, a receiving container for receiving the display section, a power supplying section for supplying a power source to the display section, a signal converting section for converting signals from the display section and a securing section for securing the power supplying section and the signal converting section to the receiving container. The power supplying section and the signal converting section are disposed between the display section and the securing section that is directly facing to a rear surface of the receiving container. Accordingly, a total thickness and weight of the LCD device can be minimized and an assembly facility of the LCD device can be improved.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: April 30, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Ho Ha, Se-In Chang