Patents by Inventor Eun-Hee Han

Eun-Hee Han 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: 8665193
    Abstract: An OCB (Optically Compensated Bend) liquid crystal display in which impulse driving is performed such that an impulse data voltage is applied between normal data voltages used for displaying an image. The impulse data voltage is divided into a first impulse data voltage and a second impulse data voltage having a voltage value that will not break a bent alignment of the OCB liquid crystals. Referring to the application of the first impulse data voltage between the normal data voltages as first impulse driving and the application of the second impulse data voltage between the normal data voltages as second impulse driving, the second impulse driving is performed at every two or more of the first impulse drivings, so as to not break the bent alignment of the liquid crystals and to thereby improve luminance of the LCD.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: March 4, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eun-Hee Han, Hee-Seop Kim, Jun-Young Lee, Chang-Hun Lee, Jun-Woo Lee, Sung-Wook Kang
  • Patent number: 8648883
    Abstract: In a display apparatus and a method of driving the same, an active period during which one pixel is turned on is divided into a red sub frame, a green sub frame, a blue sub frame, and a white sub frame. A controller compares a gray scale of a fourth image data corresponding to the white sub frame with a reference gray scale and compensates a first image data, a second image data, and a third image data corresponding to the red, green, and blue sub frames, respectively, in accordance with the comparison result.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: February 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eun-Hee Han, Hee-Seop Kim, Chang-Hun Lee, Jun-Woo Lee
  • Patent number: 8619019
    Abstract: A display apparatus including a plurality of data lines which transmit a data signal received from a data driving unit, a plurality of first gate lines and a plurality of second gate lines, which cross the data lines and are arranged in such a manner that the first gate lines and the second gate lines alternate with each other, a plurality of pixels which are defined by the data lines, the first gate lines, and the second gate lines, each of the pixels including a first sub-pixel electrode to which a first data voltage is applied by a first switching device connected to one of the first gate lines and a second sub-pixel electrode to which a second data voltage is applied by a second switching device connected to one of the second gate lines, and a gate driving unit which selects a scanning group including two or more first gate lines and two or more second gate lines, applies a gate-on voltage to the first gate lines of the scanning group according to a first predetermined scanning order, and applies the gate
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: December 31, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-woo Lee, Hee-seop Kim, Chang-hun Lee, Eun-hee Han
  • Patent number: 8467025
    Abstract: Disclosed is a liquid crystal display capable of high quality image and bright display. Gate signal lines are curved at near switching elements of the liquid crystal display. A pixel area is defined by the gate signal lines and their intersecting data signal lines. Pixel electrodes and common electrodes are disposed along a longitudinal direction of a pixel. A pixel signal and a common signal line is connected to the pixel electrode and the common electrode respectively. A storage capacitor may be formed in the middle of a longitudinal direction of the pixel, or where generally a texture may arise during display. One half of the pixel may be symmetrical with the other half with respect to the storage capacitor. A common signal line may be parallel with the data signal line and be disposed nearer to the data signal line than a pixel signal line. The pixel may be disposed symmetrically with respect to the data signal line therebetween.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: June 18, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Hun Lee, Eun-Hee Han, Hak-Sun Chang
  • Patent number: 8427515
    Abstract: Disclosed are a display device and a method of driving the same that improve both moving image visibility and lateral visibility. A display panel including gate and data lines arranged in the form of a matrix for displaying an image, a gate driver for driving the gate line, and a data driver for supplying a low gray scale image signal, a high gray scale image signal, and a black impulsive signal to the data line within one frame period.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: April 23, 2013
    Assignee: Samusng Display Co., Ltd.
    Inventors: Hee-Seop Kim, Jun-Woo Lee, Hong-Jo Park, Eun-Hee Han, Seung-Hoon Lee, Sung-Jae Yun
  • Patent number: 8427618
    Abstract: Disclosed is a liquid crystal display capable of high quality image and bright display. Gate signal lines are curved at near switching elements of the liquid crystal display. A pixel area is defined by the gate signal lines and their intersecting data signal lines. Pixel electrodes and common electrodes are disposed along a longitudinal direction of a pixel. A pixel signal and a common signal line is connected to the pixel electrode and the common electrode respectively. A storage capacitor may be formed in the middle of a longitudinal direction of the pixel, or where generally a texture may arise during display. One half of the pixel may be symmetrical with the other half with respect to the storage capacitor. A common signal line may be parallel with the data signal line and be disposed nearer to the data signal line than a pixel signal line. The pixel may be disposed symmetrically with respect to the data signal line therebetween.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: April 23, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Hun Lee, Eun-Hee Han, Hak-Sun Chang
  • Patent number: 8345196
    Abstract: A liquid crystal display with better visibility and transmittance. The liquid crystal display includes a first plate having a first field-generating electrode, disposed in a pixel area on an insulating substrate, comprising a plurality of sub-electrodes which are separated from each other by a predetermined distance and arranged parallel to each other, and a connecting electrode electrically connecting the sub-electrodes. An alignment film that is rubbed in a first direction covers a first field-generating electrode and an alignment film that is rubbed in a second direction covers a second field-generating electrode to achieve a predetermined orientation of the liquid crystals when no field is applied and more uniform rotation of the liquid crystal molecules when a field is applied.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: January 1, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-hun Lee, Hee-seop Kim, Jun-woo Lee, JianGang Lu, Eun-hee Han
  • Patent number: 8159430
    Abstract: A liquid crystal display are provided, which includes: a liquid crystal panel assembly including a plurality of pixels arranged in a matrix including a plurality of rows and a plurality of columns, a plurality of gate lines, and a plurality of data lines, wherein the number of the data lines is larger than the number of the columns, the data lines are separated from each other in the panel assembly, each pixel is connected to one of the gate lines and adjacent to two of the data lines, and the pixels in each column are alternately connected to the adjacent data lines at least every one row.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: April 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Kun Song, Yun Jang, Eun-Hee Han
  • Patent number: 8102344
    Abstract: A method for driving a display device includes: dividing an entire gray-scale region corresponding to a data gray scale into a first gray-scale region and a second gray-scale region and setting a first gamma value of the first gray-scale region and a second gamma value of the second gray-scale region, the first gamma value being smaller than the second gamma value; providing a first gray-scale display voltage corresponding to the data gray scale to a display panel during a first section of one horizontal period by using the first gamma value or the second gamma value selected by an inputted data gray scale; and providing a second gray-scale display voltage corresponding to a black gray scale to the display panel during a second section of the one horizontal period.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: January 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hoon Lee, Jun-Woo Lee, Hee-Seop Kim, Eun-Hee Han, Hong-Jo Park, Sung-Jae Yun
  • Patent number: 8094262
    Abstract: A TFT array panel on which both pixel electrodes and common electrodes are formed and a color filter panel is disposed opposing the array panel, and liquid crystals are interposed therebetween. The liquid crystals are aligned parallel to the two panels and driven by parallel electric field formed between the pixel electrodes and reference electrodes. Polarization films are arranged outsides the two panels, and a quasi-A plate compensation film is arranged between the color filter panel and the polarization film.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: January 10, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hak-Sun Chang, Eun-Hee Han, Chang-Hun Lee, Seon-Hong Ahn
  • Patent number: 8089441
    Abstract: A driving section for a liquid crystal display (LCD) panel not requiring color filters supplies the LCD panel with a plurality of first image signals based on an original image signal during a plurality of first, equal-length field intervals of a frame and also provides a second image signal for enhancing luminance during a second field interval that is longer than the first time interval. The 4-field driving method supplies RGBW data so that the field time interval for a white data is assured thereby improving response speed, charging ratio and transmittance of the liquid crystal molecules.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: January 3, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Hun Lee, Eun-Hee Han, Jun-Woo Lee
  • Patent number: 8085229
    Abstract: In a optically compensated bend (OCB) liquid crystal display, an impulsive voltage is applied to a pixel between applications of normal data voltages for displaying an image, and the impulsive voltage and the normal data voltage are controlled to prevent breaking of the bending alignment of the (OCB) liquid crystals. Accordingly, luminance of the liquid crystal display can be improved. When the normal data voltage of 0V is applied, the impulsive voltage at which the bending alignment of OCB liquid crystal is broken is set to the impulsive voltage at (for, corresponding to) the highest gray. There occurs a broken region (0-VB) where the bending alignment of the OCB liquid crystal is broken at a predetermined range that is higher than 0V. A voltage that is higher than the highest voltage (VB) of the broken region is set to a white voltage. Accordingly, luminance of the OCB liquid crystal display can be enhanced.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: December 27, 2011
    Assignee: Samsung Elctronics Co., Ltd.
    Inventors: Jun-Woo Lee, Chang-Hun Lee, Eun-Hee Han, Hee-Seop Kim, Lujian Gang
  • Publication number: 20110285689
    Abstract: In a display apparatus, a first display substrate includes a common electrode to which a common voltage is applied. A second display substrate facing the first display substrate includes a first pixel electrode and a second pixel electrode. The first and second pixel electrodes formed in one pixel region are spaced apart from and insulated from each other. A first data voltage having a first polarity with reference to the common voltage is applied to the first pixel electrode, and a second data voltage having a second polarity different from the first polarity with reference to the common voltage is applied to the second pixel electrode. Thus, a fringe field is formed between the first and second display substrates and a lateral field is formed in the second display substrate, thereby improving a transmittance and a response speed of the display apparatus.
    Type: Application
    Filed: July 29, 2011
    Publication date: November 24, 2011
    Inventors: Hee-Seop KIM, Chang-Hun Lee, Jun-Woo Lee, Jian-Gang Lu, Eun-Hee Han
  • Publication number: 20110216279
    Abstract: Disclosed is a liquid crystal display capable of high quality image and bright display. Gate signal lines are curved at near switching elements of the liquid crystal display. A pixel area is defined by the gate signal lines and their intersecting data signal lines. Pixel electrodes and common electrodes are disposed along a longitudinal direction of a pixel. A pixel signal and a common signal line is connected to the pixel electrode and the common electrode respectively. A storage capacitor may be formed in the middle of a longitudinal direction of the pixel, or where generally a texture may arise during display. One half of the pixel may be symmetrical with the other half with respect to the storage capacitor. A common signal line may be parallel with the data signal line and be disposed nearer to the data signal line than a pixel signal line. The pixel may be disposed symmetrically with respect to the data signal line therebetween.
    Type: Application
    Filed: May 16, 2011
    Publication date: September 8, 2011
    Inventors: CHANG-HUN LEE, Eun-Hee Han, Hak-Sun Chang
  • Patent number: 7948597
    Abstract: A liquid crystal display panel having improved optical transmissivity and viewing angle includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first base substrate, a plurality of gate lines and a plurality of data lines, and a pixel electrode. The gate lines and the data lines are disposed on the first base substrate and cross each other. The pixel electrode includes a first pixel electrode part and a second pixel electrode part disposed on the first base substrate and inclined in a different direction from each other with respect to the gate lines. The second substrate includes a second base substrate and a common electrode disposed on the second base substrate and alternately positioned with the pixel electrode.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: May 24, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Seop Kim, Jun-Woo Lee, Jiangang Lu, Eun-Hee Han
  • Patent number: 7944537
    Abstract: Disclosed is a liquid crystal display capable of high quality image and bright display. Gate signal lines are curved at near switching elements of the liquid crystal display. A pixel area is defined by the gate signal lines and their intersecting data signal lines. Pixel electrodes and common electrodes are disposed along a longitudinal direction of a pixel. A pixel signal and a common signal line is connected to the pixel electrode and the common electrode respectively. A storage capacitor may be formed in the middle of a longitudinal direction of the pixel, or where generally a texture may arise during display. One half of the pixel may be symmetrical with the other half with respect to the storage capacitor. A common signal line may be parallel with the data signal line and be disposed nearer to the data signal line than a pixel signal line. The pixel may be disposed symmetrically with respect to the data signal line therebetween.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: May 17, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Hun Lee, Eun-Hee Han, Hak-Sun Chang
  • Patent number: 7791680
    Abstract: A display device which can suppress an afterimage phenomenon from occurring includes a first plate including a pixel electrode which is disposed in a transmitting region and a first impurity adsorption electrode which is disposed in a light-shielding region and is separated from the pixel electrode, a second plate facing the first plate and including a second impurity adsorption electrode which is disposed in the light-shielding region to face the first impurity adsorption electrode, and an intermediate layer interposed between the first plate and the second plate.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: September 7, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-woo Lee, Hee-seop Kim, Chang-hun Lee, Eun-hee Han
  • Patent number: 7768582
    Abstract: A liquid crystal display comprises a first substrate having a pixel electrode, a second substrate adjacent to the first substrate and having a common electrode, and a liquid crystal layer disposed between the first substrate and the second substrate, wherein a black voltage applied to the pixel electrode is in a range of from about 3V to about 4.4V and a perpendicular direction dielectric constant ?? of liquid crystals in the liquid crystal layer is greater than or equal to about 0.27 times of a horizontal direction dielectric constant ?? of the liquid crystals.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: August 3, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il-Kook Huh, Seung-Hoo Yoo, Eun-Hee Han, Byeong-Seob Ban
  • Publication number: 20100060828
    Abstract: A TFT array panel on which both pixel electrodes and common electrodes are formed and a color filter panel is disposed opposing the array panel, and liquid crystals are interposed therebetween. The liquid crystals are aligned parallel to the two panels and driven by parallel electric field formed between the pixel electrodes and reference electrodes. Polarization films are arranged outsides the two panels, and a quasi-A plate compensation film is arranged between the color filter panel and the polarization film.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 11, 2010
    Inventors: Hak-Sun Chang, Eun-Hee Han, Chang-Hung Lee, Seon-Hong Ahn
  • Publication number: 20100039576
    Abstract: A liquid crystal display with better visibility and transmittance. The liquid crystal display includes a first plate having a first field-generating electrode, disposed in a pixel area on an insulating substrate, comprising a plurality of sub-electrodes which are separated from each other by a predetermined distance and arranged parallel to each other, and a connecting electrode electrically connecting the sub-electrodes. An alignment film that is rubbed in a first direction covers a first field-generating electrode and an alignment film that is rubbed in a second direction covers a second field-generating electrode to achieve a predetermined orientation of the liquid crystals when no field is applied and more uniform rotation of the liquid crystal molecules when a field is applied.
    Type: Application
    Filed: October 21, 2009
    Publication date: February 18, 2010
    Inventors: Chang-hun LEE, Hee-seop Kim, Jun-woo Lee, JianGang Lu, Eun-hee Han