Patents by Inventor Youn Hak Jeong

Youn Hak Jeong 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: 8390773
    Abstract: A liquid crystal display panel includes; an array substrate including a pixel electrode disposed in a pixel area, the pixel electrode including a reflective electrode disposed in a reflective area of the pixel area and a transparent electrode disposed in a transmissive area of the pixel area, at least one of the reflective electrode and the transparent electrode including a plurality of first slit electrodes, an opposite substrate including a first common electrode disposed in alignment with the reflective area, the first common electrode including a plurality of second slit electrodes each having a width wider than that of an individual first slit electrode of the plurality of first slit electrodes, and a liquid crystal layer interposed between the array substrate and the opposite substrate.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: March 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn-Hak Jeong, Keun-Chan Oh, Yeon-Sik Ham, Dong-Gi Seong, Kang-Woo Kim, Yeon-Mun Jeon, Hee-Hwan Lee
  • 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
  • Patent number: 8279388
    Abstract: A liquid crystal display includes a first substrate, a plurality of gate lines formed on the first substrate, a plurality of data lines intersecting the gate lines, a plurality of thin film transistors connected to the gate lines and the data lines, a plurality of color filters formed on the gate lines, the data lines, and the thin film transistors, a plurality of first electrodes made of a transparent conductor formed on the color filters, and electrically connected to the thin film transistors, a first passivation layer formed on the first electrodes, a second electrode formed on the first passivation layer, and including a plurality of branch electrodes, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: October 2, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Wook Lee, Jang-Soo Kim, Kang-Woo Kim, 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: 20120062537
    Abstract: A liquid crystal display includes a first substrate and a second substrate facing each other, a liquid crystal layer interposed between the first and second substrates and including liquid crystal molecules, a first gate line and a second gate line formed on the first substrate and transferring gate signals, a first voltage line formed on the first substrate and transferring voltage of predetermined intensity, a data line formed on the first substrate and transferring a data signal, a first switching element connected to the first gate line and the first voltage line, a second switching element connected to the second gate line and the data line, and a pixel electrode connected to the first switching element and the second switching element. A gate-on signal is applied to the first gate line earlier than the second gate line.
    Type: Application
    Filed: August 23, 2011
    Publication date: March 15, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn-Hak JEONG, Keun-Chan OH, Hee-Hwan LEE, Jae-Jin LYU, Gi-Chang LEE
  • Patent number: 8134674
    Abstract: Disclosed is a Fringe Field Switching (FFS) mode Liquid Crystal Display (LCD) including lower substrate, an upper substrate and a liquid crystal layer interposed between the substrates. Each pixel region is defined by gate lines and data lines formed to cross each other on the lower substrate. Switching devices are disposed at intersections of the gate lines and the data lines. The FFS mode LCD includes a transparent pixel electrode, and a transparent common electrode disposed apart from the transparent pixel electrode by an insulating layer interposed therebetween to adjust a transmittance by applying an electric field to the liquid crystal layer. A metal line of a specific thickness is formed to be electrically connected with the transparent common electrode on or under the transparent common electrode of a non-opening region in which the gate lines and the data lines are formed.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: March 13, 2012
    Assignee: Hydis Technologies Co., Ltd.
    Inventors: Dong Hun Lim, Je Hoon Song, Youn Hak Jeong, Won Hee Lee
  • Publication number: 20110304808
    Abstract: A liquid crystal display includes a first substrate and a second substrate facing the first substrate. A first alignment layer formed on the first substrate includes a first area aligned in a first direction and a second area aligned in a second direction opposite to the first direction, and a second alignment layer formed on the second substrate includes a third area aligned in a third direction different from the first direction and a fourth area aligned in a fourth direction opposite to the third direction. Liquid crystal molecules in a liquid crystal layer disposed between the first and second alignment layers are aligned in different directions from each other in plural domains defined by the first to fourth areas. Thus, the liquid crystal display may have improved aperture ratio and transmittance.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 15, 2011
    Inventors: Youn Hak JEONG, Keunchan Oh, Seunghee Lee, Inyoung Cho, Sung min Kim
  • Publication number: 20110260957
    Abstract: A liquid crystal display includes a first substrate and a second substrate facing each other; a switching element disposed on the first substrate; a pixel electrode connected to the switching element and supplied with a data voltage; an opposing electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate and including liquid crystal molecules. The pixel electrode includes a cutout and a liquid crystal direction controller that are alternately disposed. The cutout and the liquid crystal direction controller divide the pixel electrode into a plurality of sub-regions, and inclination directions of the liquid crystal molecules are different according to the plurality of sub-regions when the pixel electrode is supplied with the data voltage. The liquid crystal direction controller is concave downward or convex upward with respect to a surface of the first substrate.
    Type: Application
    Filed: October 13, 2010
    Publication date: October 27, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn-Hak JEONG, Hee-Hwan LEE, Keun-Chan OH, Jae-Jin LYU, Yoon-Sung UM
  • 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
  • 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
  • Patent number: 8009237
    Abstract: A gate line and a data line are formed on a base substrate. A first sensor line is parallel with the gate line. A sensor gate electrode is extended from the first sensor line. A sensor active pattern having a plurality of island-type sub-active members is formed on the first sensor gate electrode. A second sensor line is parallel with the data line. A first sensor drain electrode is extended from the second sensor line at the sensor active pattern. A second sensor drain electrode corresponding to the first sensor gate electrode is formed on the sensor active pattern. A pixel electrode is electrically connected to the gate line and the data line. A sensor electrode part electrically connects the first and second sensor drain electrodes spaced apart from the pixel electrode. Light is reflected by the first and second sensor drain electrodes, which have an embossed shape.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: August 30, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youn-Hak Jeong, Keun-Chan Oh, Yeon-Sik Ham, Dong-Gi Seong, Kang-Woo Kim, Yeon-Mun Jeon, Hee-Hwan Lee
  • Publication number: 20110051065
    Abstract: A liquid crystal display and a manufacturing method are 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, a field generating electrode disposed on at least one of the first substrate and the second substrate, an alignment layer disposed on the field generating electrode, and a liquid crystal layer interposed between the first substrate and the second substrate, including liquid crystal molecules and a second alignment polymer, wherein the first alignment polymer is formed by light-irradiating the alignment agent and the first alignment aids and the second alignment polymer is formed by light-irradiating the liquid crystal molecules and the second alignment aids, and the first alignment aids and the second alignment aids include a mesogen and a photo-polymerizable group coupled to the mesogen.
    Type: Application
    Filed: June 16, 2010
    Publication date: March 3, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gi SEONG, Jae-Jin Lyu, Ki-Chul Shin, Seung-Beom Park, Keun-Chan Oh, Yoon-Sung Um, Su-Jeong Kim, Youn-Hak Jeong, Jun-Hyup Lee
  • Publication number: 20110013129
    Abstract: A display substrate includes a base substrate, a switching element and a pixel electrode. The switching element is formed on the base substrate. The pixel electrode is electrically connected to the switching element. The pixel electrode includes a plurality of slit electrodes respectively disposed on a plurality of domains in parallel defined in a first direction. The slit electrodes are extended in a direction different from the first direction. A slope of a first long side of the slit electrodes is different from that of a second long side opposite to the first end side of the slit electrode. Thus, a plurality of domains is formed on one line, so that a direction of liquid crystal molecules is controlled and a generation of texture may be decreased at a boundary between domains. As a result, compensating efficiency is enhanced.
    Type: Application
    Filed: December 2, 2009
    Publication date: January 20, 2011
    Inventors: Youn-Hak JEONG, Hee-Hwan Lee, Keun-Chan Oh
  • Publication number: 20100328591
    Abstract: A display substrate includes a base substrate, a reflective layer, a common electrode and a pixel electrode. The base substrate includes a pixel area having a transmissive area and a reflective area. The reflective layer is disposed in the reflective area of the base substrate. The common electrode includes a first sub-common electrode formed in the reflective area and a second sub-common electrode formed in the transmissive area. The pixel electrode includes a first sub-pixel electrode spaced apart from the first sub-common electrode by a first distance in the reflective area, and a second sub-pixel electrode spaced apart from the second sub-common electrode by a second distance less than the first distance in the transmissive area.
    Type: Application
    Filed: November 5, 2009
    Publication date: December 30, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Keun-Chan Oh, Joo-Seok Yeom, Youn-Hak Jeong, Hee-Hwan Lee, Jae-Jin Lyu
  • Publication number: 20100328290
    Abstract: A liquid crystal display includes a first substrate including pixels, each having a transmissive area and a reflective area, a second substrate, and a liquid crystal layer disposed between the first and second substrates. Each of the pixels includes first and second thin film transistors which output a data signal in response to a first gate signal, a transmissive pixel electrode disposed in the transmissive area and electrically connected to the first thin film transistor to charge a first pixel voltage based on the data signal, a reflective pixel electrode disposed in the reflective area and electrically connected to the second thin film transistor to charge a second pixel voltage based on the data signal, and a voltage controller which controls the first pixel voltage and the second pixel voltage in response to a second gate signal, which is generated after the first gate signal.
    Type: Application
    Filed: June 14, 2010
    Publication date: December 30, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn Hak JEONG, Jooseok YEOM, Keunchan OH, Yoonsung UM, Heehwan LEE, Kyuwan RYU, Jaejin LYU, Myungjae PARK
  • Publication number: 20100328564
    Abstract: A liquid crystal display includes a first substrate including pixels, each having a transmissive area and a reflective area, a second substrate, and a liquid crystal layer disposed between the first and second substrates. Each of the pixels includes first and second thin film transistors which output a data signal in response to a first gate signal, a transmissive pixel electrode disposed in the transmissive area and electrically connected to the first thin film transistor to charge a first pixel voltage based on the data signal, a reflective pixel electrode disposed in the reflective area and electrically connected to the second thin film transistor to charge a second pixel voltage based on the data signal, and a voltage controller which controls the first pixel voltage and the second pixel voltage in response to a second gate signal, which is generated after the first gate signal.
    Type: Application
    Filed: November 18, 2009
    Publication date: December 30, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn Hak JEONG, Jooseok YEOM, Keunchan OH, Heehwan LEE, Jaejin LYU
  • Publication number: 20100259712
    Abstract: A display device includes a lower polarizing plate, an array substrate, an opposite substrate, a liquid crystal layer and an upper polarizing plate. The array substrate includes a pixel electrode and a lower alignment layer. The pixel electrode has a planar-type electrode portion and a plurality of branch electrode portions extended from the planar-type electrode portion in a first direction, which is formed at about 45 degrees with respect to a first polarization axis. The lower alignment layer is formed on the pixel electrode to be aligned in the first direction. The opposite substrate includes a planar-type common electrode facing the pixel electrode and an upper alignment layer. The upper alignment layer is formed on the common electrode to be aligned in an opposite direction of the first direction.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 14, 2010
    Inventors: Youn-Hak Jeong, Yeon-Sik Ham, Yeon-Mun Jeon, Keun-Chan Oh, Kang-Woo Kim, Hee-Hwan Lee
  • Publication number: 20100230680
    Abstract: A liquid crystal display includes; a first substrate, a gate line disposed on the first substrate, a data line intersecting the gate line, a thin film transistor connected to the gate line and the data line, a pixel electrode connected to the thin film transistor, an interlayer insulating layer disposed on the pixel electrode, a common electrode disposed on the interlayer insulating layer and including a plurality of electrically connected common electrode lines extending substantially parallel to each other, a second substrate disposed substantially opposite to the first substrate, a reference electrode disposed on substantially an entire surface of the second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, and having negative dielectric anisotropy.
    Type: Application
    Filed: November 13, 2009
    Publication date: September 16, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Gi SEONG, Joo-Seok YEOM, Youn-Hak JEONG, Keun-Chan OH
  • Publication number: 20100171892
    Abstract: Disclosed is a Fringe Field Switching (FFS) mode Liquid Crystal Display (LCD) including lower substrate, an upper substrate and a liquid crystal layer interposed between the substrates. Each pixel region is defined by gate lines and data lines formed to cross each other on the lower substrate. Switching devices are disposed at intersections of the gate lines and the data lines. The FFS mode LCD includes a transparent pixel electrode, and a transparent common electrode disposed apart from the transparent pixel electrode by an insulating layer interposed therebetween to adjust a transmittance by applying an electric field to the liquid crystal layer. A metal line of a specific thickness is formed to be electrically connected with the transparent common electrode on or under the transparent common electrode of a non-opening region in which the gate lines and the data lines are formed.
    Type: Application
    Filed: December 14, 2009
    Publication date: July 8, 2010
    Applicant: HYDIS TECHNOLOGIES CO., LTD.
    Inventors: Dong Hun Lim, Je Hoon Song, Youn Hak Jeong, Won Hee Lee