Patents by Inventor Gak-Seok Lee

Gak-Seok Lee 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: 8865274
    Abstract: A liquid crystal display device is provided, including a liquid crystal layer interposed between a first display panel and a second display panel; and an alignment film formed on at least one of the first and second display panels, the alignment film including first polysiloxanes and second polysiloxanes disposed on the first polysiloxanes, wherein a first portion of silicon atoms of the second polysiloxanes are bonded to vertical functional groups interacting with liquid crystal molecules in the liquid crystal layer, and to first pre-tilting functional groups aligning the liquid crystal molecules in the liquid crystal layer to be tilted with respect to at least one of the first and second display panels by being cross-linked. The bonding structure of the first and the second polysiloxanes being different.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 21, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyong-Sik Choi, Myung-Jae Park, Min-Wook Park, Sung-Hoon Kim, Gak-Seok Lee, Woo-Jung Shin, Jun-Hyup Lee, Keun-Chan Oh, Sang-Gyun Kim, Su-Jeong Kim, Seung-Beom Park, Youn-Hak Jeong
  • Patent number: 8848117
    Abstract: A display apparatus includes a shutter panel and a display panel that alternately displays a left-eye image and a right-eye image in a 3D mode. The shutter panel includes dual-frequency liquid crystals in which a polarity of dielectric constant anisotropy is changed according to a frequency of the driving voltage to selectively delay a phase of the left-eye image or the right-eye image, which pass through the dual-frequency liquid crystals. The dual-frequency liquid crystals have a fast response speed to the low voltage, and thus a cross-talk phenomenon between the left-eye image and the right-eye image may be prevented.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gak Seok Lee, Jaehyoung Park, Kichul Shin, Youn Hak Jeong, Tae Kwon Jung, Haksun Chang
  • Publication number: 20140063428
    Abstract: A display panel includes a first substrate including a common electrode, a second substrate including a first solid pixel electrode and a second solid pixel electrode, and a liquid crystal layer including liquid crystal between the first substrate and the second substrate. The second solid pixel electrode is spaced apart from the first solid pixel electrode, and surrounds the first solid pixel electrode.
    Type: Application
    Filed: January 24, 2013
    Publication date: March 6, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gak-Seok LEE, Keun-Chan OH, Taek-Joon LEE
  • Patent number: 8643813
    Abstract: A liquid crystal display includes: a first substrate and a second substrate facing each other; a liquid crystal layer between the first substrate and the second substrate; a lower pixel electrode positioned on the first substrate; a first passivation layer positioned on the lower pixel electrode; an upper pixel electrode positioned on the first passivation layer; and an opposing electrode positioned on the second substrate, wherein the upper pixel electrode comprises a stem and a plurality of minute branches extending outwardly from the stem, and the lower pixel electrode comprises a main body overlapping the plurality of minute branches and at least one bar-shaped portion extending along an edge of the main body maintaining a predetermined gap with the edge of the main body.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: February 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gak Seok Lee, Youn Hak Jeong, Ki Chul Shin
  • Patent number: 8625062
    Abstract: A transparent display device and a driving method thereof. The transparent display device includes a light guide plate transmitting incident light impinging from its exterior or its back surface and reflecting backlight light impinging from its side surface to its front surface; and an active reflector disposed on the back surface of the light guide plate. The active reflector includes a cholesteric liquid crystal layer transmitting the incident light in a planar phase in a transparent mode.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: January 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gak Seok Lee, Ki Chul Shin, Youn Hak Jeong
  • Publication number: 20130242245
    Abstract: A display panel includes a gate line, a data line, a pixel electrode formed adjacent to the gate and data lines on a lower substrate and a first alignment film disposed in a first domain disposed on the pixel electrode and in a second domain formed on pixel electrode. The first domain is aligned in a first direction and the second domain is aligned in a second direction which is different from the first direction. The upper substrate opposes the lower substrate and includes a common electrode disposed on the upper substrate and a second alignment film disposed on the common electrode at a third domain corresponding to the first domain and at a fourth domain corresponding to the second domain. The liquid crystal layer is disposed between the lower substrate and the upper substrate and includes liquid crystals defined by a plurality of pixel areas.
    Type: Application
    Filed: December 11, 2012
    Publication date: September 19, 2013
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hak-Sun CHANG, Jang-Wi Ryu, Gak-Seok Lee, Jun-Woo Lee, Hee-Hwan Lee, Hyo-Ju Jung
  • Publication number: 20130229609
    Abstract: A liquid crystal display includes a common electrode for receiving a common voltage. The liquid crystal display further includes a pixel electrode for receiving a data voltage, the pixel electrode being associated with a pixel of the liquid crystal display. The liquid crystal display further includes a switching element electrically connected to the pixel electrode for controlling transmission of the data voltage. The liquid crystal display further includes a liquid crystal layer disposed between the common electrode and the pixel electrode. The liquid crystal display further includes a plate electrode electrically connected to the switching element and including a plate that overlaps the pixel electrode, wherein the pixel electrode spans a larger area than the plate. The pixel electrode and the plate electrode are equipotential.
    Type: Application
    Filed: October 17, 2012
    Publication date: September 5, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Youn Hak JEONG, Gak Seok LEE, Ki Chul SHIN
  • Publication number: 20130229608
    Abstract: A liquid crystal display includes: a first substrate and a second substrate facing each other; a liquid crystal layer between the first substrate and the second substrate; a lower pixel electrode positioned on the first substrate; a first passivation layer positioned on the lower pixel electrode; an upper pixel electrode positioned on the first passivation layer; and an opposing electrode positioned on the second substrate, wherein the upper pixel electrode comprises a stem and a plurality of minute branches extending outwardly from the stem, and the lower pixel electrode comprises a main body overlapping the plurality of minute branches and at least one bar-shaped portion extending along an edge of the main body maintaining a predetermined gap with the edge of the main body.
    Type: Application
    Filed: July 16, 2012
    Publication date: September 5, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gak Seok LEE, Youn Hak JEONG, Ki Chul SHIN
  • Publication number: 20130215346
    Abstract: A liquid crystal display is provided. A liquid crystal display according to an exemplary embodiment of the present invention includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate, wherein the liquid crystal layer includes liquid crystal molecules and nanoparticles including a hydrophobic group having a chain structure and a hydrophilic group.
    Type: Application
    Filed: July 30, 2012
    Publication date: August 22, 2013
    Applicants: Pusan National University Industry-University Cooperation Foundation, SAMSUNG DISPLAY CO., LTD.
    Inventors: Gak Seok LEE, Hee Seop KIM, Ki Chul SHIN, Ki-Han KIM, Byung Wok PARK, Tae-Hoon YOON, Eun Young JEON, Ji-Hoon LEE
  • Publication number: 20130182018
    Abstract: A display panel comprises a plurality of pixels. A first pixel among the plurality of pixels comprises a first subpixel which further comprises a first subpixel electrode, a first switching element configured to apply a data voltage to the first subpixel electrode, and a second switching element applying a boosting voltage to the first subpixel electrode. The first pixel further comprises a second subpixel comprising a second subpixel electrode and a third switching element applying the data voltage to the low pixel electrode. Accordingly, the display quality and the reliability of the display panel may be improved.
    Type: Application
    Filed: August 15, 2012
    Publication date: July 18, 2013
    Applicant: Samsung Display Co., LTD.
    Inventors: Youn-Hak JEONG, Gak-Seok LEE
  • Publication number: 20130141424
    Abstract: The present invention relates to a three-dimensional image display device and a driving method thereof. A three-dimensional image display device according to an exemplary embodiment of the present invention includes: a display panel assembly including a display panel including a plurality of pixels alternately displaying a left eye image and a right eye image and a data driver transmitting a data voltage to the plurality of pixels; and a shutter member including a left eye shutter and a right eye shutter, wherein a display period of an insertion image is positioned between a display period of the left eye image and a display period of the right eye image, a minimum gray of the left eye image or the right eye image is a first gray that is greater than 0 gray, and a gray of the insertion image is a second gray that is smaller the first gray.
    Type: Application
    Filed: May 4, 2012
    Publication date: June 6, 2013
    Inventors: Hak Sun Chang, Jang Wi Ryu, Hyo Ju Jung, Gak Seok Lee
  • Publication number: 20130141653
    Abstract: A display apparatus includes a shutter panel and a display panel that alternately displays a left-eye image and a right-eye image in a 3D mode. The shutter panel includes dual-frequency liquid crystals in which a polarity of dielectric constant anisotropy is changed according to a frequency of the driving voltage to selectively delay a phase of the left-eye image or the right-eye image, which pass through the dual-frequency liquid crystals. The dual-frequency liquid crystals have a fast response speed to the low voltage, and thus a cross-talk phenomenon between the left-eye image and the right-eye image may be prevented.
    Type: Application
    Filed: May 11, 2012
    Publication date: June 6, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gak Seok LEE, Jaehyoung PARK, Kichul SHIN, Youn Hak JEONG, Tae Kwon JUNG, Haksun CHANG
  • Publication number: 20130057813
    Abstract: A liquid crystal display includes a first substrate including a plurality of pixel areas, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate includes a first base substrate, a first pixel electrode disposed on the first base substrate and corresponding to each pixel area, a shielding electrode spaced apart from and insulated from the first pixel electrode, a passivation layer disposed on the first pixel electrode and the shielding electrode, and a second pixel electrode disposed on the passivation layer and partially overlapped with the first pixel electrode.
    Type: Application
    Filed: March 7, 2012
    Publication date: March 7, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn Hak JEONG, Gak Seok LEE, Kichul SHIN, Heehwan LEE, Jiphyo HONG
  • Publication number: 20130044276
    Abstract: A transparent display device and a driving method thereof. The transparent display device includes a light guide plate transmitting incident light impinging from its exterior or its back surface and reflecting backlight light impinging from its side surface to its front surface; and an active reflector disposed on the back surface of the light guide plate. The active reflector includes a cholesteric liquid crystal layer transmitting the incident light in a planar phase in a transparent mode.
    Type: Application
    Filed: February 29, 2012
    Publication date: February 21, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Gak Seok LEE, Ki Chul SHIN, Youn Hak JEONG
  • Publication number: 20120249940
    Abstract: A liquid crystal display device is provided, including a liquid crystal layer interposed between a first display panel and a second display panel; and an alignment film formed on at least one of the first and second display panels, the alignment film including first polysiloxanes and second polysiloxanes disposed on the first polysiloxanes, wherein a first portion of silicon atoms of the second polysiloxanes are bonded to vertical functional groups interacting with liquid crystal molecules in the liquid crystal layer, and to first pre-tilting functional groups aligning the liquid crystal molecules in the liquid crystal layer to be tilted with respect to at least one of the first and second display panels by being cross-linked. The bonding structure of the first and the second polysiloxanes being different.
    Type: Application
    Filed: September 23, 2011
    Publication date: October 4, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyong-Sik Choi, Myung-Jae Park, Min-Wook Park, Sung-Hoon Kim, Gak-Seok Lee, Woo-Jung Shin, Jun-Hyup Lee, Keun-Chan Oh, Sang-Gyun Kim, Su-Jeong Kim, Seung-Beom Park, Youn-Hak Jeong
  • Publication number: 20120120334
    Abstract: A liquid crystal display may include a first substrate, a second substrate facing the first substrate, a liquid crystal layer comprising liquid crystal molecules that are interposed between the first substrate and the second substrate, a first electrode disposed on the first substrate, an insulating layer disposed on the first electrode, a second electrode disposed on the insulating layer, a third electrode disposed on the second substrate, and an alignment layer disposed on any one of the second electrode and the third electrode. The second electrode comprises a fine slit structure, and at least one of the liquid crystal layer and the alignment layer comprises a sub-alignment substance.
    Type: Application
    Filed: March 24, 2011
    Publication date: May 17, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Gak-Seok LEE, Ki Chul SHIN, Youn Hak JEONG, Hee Hwan LEE, Joo Seok YEOM
  • Publication number: 20110242443
    Abstract: A liquid crystal display panel, including: a first substrate including a common electrode; a second substrate including a plurality of pixels which are arranged in a matrix form and face the common electrode, wherein at least one of the pixels includes first and second subpixels; the first subpixel including a first subpixel electrode, wherein the first subpixel electrode includes a plurality of first micro branches, which are arranged at a first angle with respect to a polarization axis of a polarizer disposed adjacent to the first or second substrate; the second subpixel including a second subpixel electrode, wherein the second subpixel electrode includes a plurality of second micro branches, which are arranged at a second angle with respect to the polarization axis of the polarizer, wherein the first angle is different from the second angle by about 20° or less; and a liquid crystal layer interposed between the first and second substrates.
    Type: Application
    Filed: February 1, 2011
    Publication date: October 6, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyong-Sik Choi, Myung-Jae Park, Min-Wook Park, Sung-Hoon Kim, Gak-Seok Lee, Woo-Jung Shin, Jun-Hyup Lee, Keun-Chan Oh, Sang-Gyun Kim, Su-Jeong Kim, Seung-Beom Park, Youn-Hak Jeong
  • Publication number: 20110242468
    Abstract: A liquid crystal display panel, including: a pixel electrode formed on a first substrate; an alignment layer formed on the pixel electrode, wherein the alignment layer includes an alignment layer material and aligns first liquid crystal molecules in a direction substantially perpendicular to the pixel electrode; and a photo hardening layer formed on the alignment layer, wherein the photo hardening layer includes a photo hardening layer material and aligns second liquid crystal molecules to be tilted with respect to the pixel electrode, wherein the alignment layer material and the photo hardening layer material have different polarities from each other.
    Type: Application
    Filed: February 1, 2011
    Publication date: October 6, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyong-Sik Choi, Myung-Jae Park, Min-Wook Park, Sung-Hoon Kim, Gak-Seok Lee, Woo-Jung Shin, Jun-Hyup Lee, Keun-Chan Oh, Sang-Gyun Kim, Su-Jeong Kim, Seung-Beom Park, Youn-Hak Jeong