Patents by Inventor Seong Ho Kang

Seong Ho Kang 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: 20090167642
    Abstract: Provided are a method and apparatus for driving a PDP for widening a driving margin and improving contrast. The method for driving a PDP includes a first step of forming wall charges in cells with a set-up discharge using a set-up signal in a first sub-field and erasing the wall charges with a set-down discharge using a first set-down signal to initialize the cells, and a second step of erasing the wall charges with a set-down discharge generated using a second set-down signal different from the first set-down signal in a second sub-field, to initialize the cells. The method and apparatus for driving a PDP uniformly initialize sub-fields to widen the driving margin of PDP and remove a set-up discharge in at least one sub-field to improve the contrast of PDP.
    Type: Application
    Filed: February 27, 2009
    Publication date: July 2, 2009
    Inventors: Hee Jae Kim, Chang Young Kwon, Jeong Pil Choi, Seong Ho Kang
  • Patent number: 7538748
    Abstract: This invention relates to a driving apparatus of a plasma display panel that is capable of being operated stable, regardless of temperature. A driving apparatus of a plasma display panel according to the present invention includes a panel having a scanning electrode for receiving a scanning pulse in an address period and an address electrode for receiving a date pulse synchronized with the scanning pulse in the address period; and a pulse width controller for changing the width of the scanning pulse when the panel is driven at a low temperature.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: May 26, 2009
    Assignee: LG Electronics Inc.
    Inventors: Soo Seok Sim, Won Tae Kim, Bon Cheol Koo, Seong Ho Kang
  • Patent number: 7535437
    Abstract: A structure and driving method of a plasma display panel is provided, in which an amount of priming particles within a discharge cell increases to reduce discharge lag of address discharge. The structure of the plasma display panel includes a plurality of sustain electrode pairs successively formed on an upper electrode, a plurality of common electrodes formed one by one between a pair of the sustain electrodes, and a dielectric layer formed on the substrate to deposit the sustain electrodes and the common electrodes. The method for driving the plasma display panel includes the steps of applying a common pulse, which is periodically turned on/off, to the common electrodes, applying a scan pulse to one of a pair of the sustain electrodes, and applying an address pulse to the address electrodes when the scan pulse is applied to the one sustain electrode. Thus, since discharge conditions within the discharge cell can be improved, discharge lag less occurs than the related art plasma display panel.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: May 19, 2009
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Kim, Seong Ho Kang
  • Patent number: 7532177
    Abstract: Disclosed herein is a method and apparatus for driving a plasma display panel, which improves contrast characteristics and preventing a low discharge making a cell non-luminous at a specific gray scale.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: May 12, 2009
    Assignee: LG Electronics Inc.
    Inventors: Chang Young Kwon, Seong Ho Kang, Hee Jae Kim, Jeong Pil Choi
  • Publication number: 20090115338
    Abstract: The present invention relates to a plasma display apparatus and, more particularly, to a method of driving a plasma display panel. A plasma display apparatus according to an aspect of the present invention includes a plasma display panel including a plurality of scan electrodes and sustain electrodes formed on an upper substrate, and a plurality of address electrodes formed on a lower substrate; a driver for supplying driving signals to the plurality of electrodes; and a fluorescent layer, comprising a fluorescent material, and a conductive material having conductivity higher than that of the fluorescent material, is formed on the lower substrate. The plurality of scan electrodes may be divided into first and second groups and then supplied with scan signals, and scan bias voltages supplied to the first and second groups in at least any one period of an address period may be different from each other.
    Type: Application
    Filed: February 14, 2008
    Publication date: May 7, 2009
    Inventors: Yoon Chang Choi, Sung Jin Park, Chi Yun Ok, Seong Ho Kang, Kyung Ryeol Shim
  • Publication number: 20090115695
    Abstract: The present invention relates to a plasma display apparatus. The plasma display apparatus includes a first layer and a second layer over an upper substrate of a plasma display panel. The first layer emits light having a peak at a first wavelength region with light emitted from a discharge space. The second layer emits light having a peak at a second wavelength region lower than the first wavelength region with light emitted from a discharge space. The first layer and the second layer are disposed over a dielectric layer of the upper substrate. The plurality of scan electrodes are divided into first and second groups and then supplied with scan signals, cycles of scan signals supplied in first and second subfields of a plurality of subfields constituting one frame are identical to each other, and scan bias voltages supplied to the first and second groups in at least any one period of an address period are different from each other.
    Type: Application
    Filed: February 15, 2008
    Publication date: May 7, 2009
    Inventors: Dong Soo Lee, Kyung Ryeol Shim, Yoon Chang Choi, Chi Yun Ok, Seong Ho Kang
  • Publication number: 20090115696
    Abstract: The present invention relates to a method of driving a plasma display panel and a plasma display apparatus employing the same. In the plasma display apparatus, a plurality of scan electrodes formed in a plasma display panel are divided into first and second groups and then supplied with scan signals. When a scan bias voltage supplied in a first subfield of first and second subfields is higher than that supplied in a second subfield of the first and second subfields, a lowest voltage of a reset signal supplied in the second subfield is higher than that supplied in the first subfield. In accordance with the plasma display apparatus of the present invention, the lowest voltage of the reset signal is controlled according to the scan bias voltage in dividing the plurality of scan electrodes into two or more groups and driving them.
    Type: Application
    Filed: April 10, 2008
    Publication date: May 7, 2009
    Inventors: Yoon Chang CHOI, Won Jae KIM, Hyung Jae KIM, Seong Ho KANG, Kyung Ryeol SHIM
  • Publication number: 20090115692
    Abstract: The present invention relates to a plasma display apparatus. In an aspect, the plasma display apparatus includes a plasma display panel including a plurality of scan electrodes and sustain electrodes formed on an upper substrate, and a plurality of address electrodes formed on a lower substrate, and a driver for supplying driving signals to the plurality of electrodes. The plurality of scan electrodes may be divided into first and second groups. An address period may include first and second group scan periods in which scan signals are supplied to the first and second groups, respectively. Scan bias voltages supplied to the first and second groups in at least one of the first and second group scan periods may be different from each other. Time points at which data signals are supplied to first and second of the plurality of address electrodes in at least one of the first and second group scan periods may be different from each other.
    Type: Application
    Filed: February 14, 2008
    Publication date: May 7, 2009
    Inventors: Yoon Chang Choi, Byung Goo Kong, Chi Yun Ok, Byoung Gun Kim, Seong Ho Kang
  • Publication number: 20090115702
    Abstract: The present invention relates to a plasma display apparatus and, more particularly, to a method of driving a plasma display panel. The plasma display apparatus includes a plasma display panel including a plurality of scan electrodes and sustain electrodes formed on an upper substrate, and a plurality of address electrodes formed on a lower substrate, and a driver for supplying driving signals to the plurality of electrodes. The plurality of scan electrodes are divided into first and second groups and then supplied with scan signals, and scan bias voltages supplied to the first and second groups in at least any one period of an address period are different from each other. In at least one of a plurality of subfields constituting one frame, a width of a first sustain signal of a plurality of sustain signals supplied during a sustain period is larger than a width of each of the remaining sustain signals.
    Type: Application
    Filed: April 10, 2008
    Publication date: May 7, 2009
    Inventors: Yoon Chang CHOI, Dong Soo Lee, Byoung Gun Kim, Seong Ho Kang, Kyung Ryeol Shim
  • Publication number: 20090115693
    Abstract: The present invention relates to a plasma display apparatus. In this plasma display apparatus, a plurality of scan electrodes are divided into first and second groups. An address period includes first and second group scan periods in which scan signals are supplied to the first and second groups, respectively. Scan bias voltages supplied to the first and second groups in at least one of the first and second group scan periods are different from each other. In at least one of a plurality of subfields constituting one frame, a stabilization signal is supplied to at least one of the first and second groups before the scan signal is supplied after a reset signal is supplied. Accordingly, a reduction in the image quality of a display image due to the occurrence of a spot erroneous discharge or address erroneous discharge can be prevented.
    Type: Application
    Filed: February 14, 2008
    Publication date: May 7, 2009
    Inventors: Yoon Chang Choi, Won Jae Kim, Hyung Jae Kim, Seong Ho Kang, Kyung Ryeol Shim
  • Publication number: 20090115701
    Abstract: The present invention relates to a method of driving a plasma display panel and a plasma display apparatus employing the same. A plurality of scan electrodes formed in a plasma display panel may be divided into first and second groups, each of the first and second groups may be divided into a plurality of subgroups and then sequentially supplied with scan signals on a subgroup basis. Scan bias voltages supplied to two or more subgroups belonging to the first group in a first period of the address period may be different from one another, scan bias voltages supplied to two or more subgroups belonging to the second group in a second period of the address period may be different from one another, and scan bias voltages supplied to any one subgroup belonging to the first group and any one subgroup belonging to the second group in a third period of the address period may be different from each other.
    Type: Application
    Filed: February 15, 2008
    Publication date: May 7, 2009
    Inventors: Won Jae KIM, Hyung Jae KIM, Kyung Ryeol SHIM, Yoon Chang CHOI, Seong Ho KANG
  • Publication number: 20090115694
    Abstract: The present invention relates to a plasma display apparatus. The plasma display apparatus includes a first layer and a second layer over an upper substrate of a plasma display panel. The first layer emits light having a peak at a first wavelength region with light emitted from a discharge space. The second layer emits light having a peak at a second wavelength region lower than the first wavelength region with light emitted from a discharge space. The first layer and the second layer are disposed over a dielectric layer of the upper substrate. The plurality of scan electrodes are divided into first and second groups and then supplied with scan signals, and scan bias voltages supplied to the first and second groups in at least one period of an address period are different from each other. Accordingly, the occurrence of address erroneous discharge due to the loss of wall charges can be reduced and the discharge efficiency can be enhanced.
    Type: Application
    Filed: February 15, 2008
    Publication date: May 7, 2009
    Inventors: Won Jae Kim, Kyung Ryeol Shim, Yoon Chang Choi, Chi Yun Ok, Seong Ho Kang
  • Publication number: 20090109136
    Abstract: The present invention relates to a driving apparatus for supplying a driving signal to a plasma display panel, and a plasma display apparatus employing the same. A reset signal supplied during a reset period of a first subfield of a plurality of subfields includes a first rising period where a voltage rises up to a first voltage, and a first sustain period where the first voltage is sustained. A reset signal supplied during a reset period of a second subfield includes a second rising period where a voltage rises up to a second voltage lower than the first voltage, and a second sustain period where the second voltage is sustained. The second voltage is higher than a sustain voltage. In accordance with the present invention, if it is sought to reset discharge cells of a PDP in a reset period, a signal whose voltage gradually rises up to a voltage higher than the sustain voltage is applied to a scan electrode.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Inventors: Jeong Pil CHOI, Seong Ho KANG
  • Patent number: 7525513
    Abstract: A plasma display panel driving method and apparatus for optimizing an AV mode and a PC mode is disclosed. In the driving method and apparatus, an operation mode is selected on a basis of a motion extent of a data. At least one of a sub-field arrangement arranged within one frame interval and the number of sustaining pulses is differently controlled in response to said selected operation mode.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: April 28, 2009
    Assignee: LG Electronics Inc.
    Inventors: Sang Jin Yoon, Seong Ho Kang
  • Patent number: 7511685
    Abstract: Provided are a method and apparatus for driving a PDP for widening a driving margin and improving contrast. The method for driving a PDP includes a first step of forming wall charges in cells with a set-up discharge using a set-up signal in a first sub-field and erasing the wall charges with a set-down discharge using a first set-down signal to initialize the cells, and a second step of erasing the wall charges with a set-down discharge generated using a second set-down signal different from the first set-down signal in a second sub-field, to initialize the cells. The method and apparatus for driving a PDP uniformly initialize sub-fields to widen the driving margin of PDP and remove a set-up discharge in at least one sub-field to improve the contrast of PDP.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: March 31, 2009
    Assignee: LG Electronics Inc.
    Inventors: Hee Jae Kim, Chang Young Kwon, Jeong Pil Choi, Seong Ho Kang
  • Patent number: 7463218
    Abstract: A method and apparatus for driving a plasma display panel that is adaptive for improving a sustain driving margin. In the method and apparatus, the number of sustaining pulses is set in response to an average picture level. A period of the sustaining pulse is set in proportion to said average picture level.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: December 9, 2008
    Assignee: LG Electronics Inc.
    Inventors: Sang Jin Yun, Seong Ho Kang
  • Publication number: 20080245501
    Abstract: A console air conditioner comprising an evaporator and a heater is installed in the console space between front seats of a vehicle. Both sides of the air mixing zone where a cool air passageway meets a warm air passageway in the console air conditioner are connected to a pillar duct extending toward the middle pillar of the vehicle, thereby the performance of air conditioning for the rear seats in the vehicle can be accomplished independently and efficiently.
    Type: Application
    Filed: September 23, 2005
    Publication date: October 9, 2008
    Applicant: HALLA CLIMATE CONTROL CORP.
    Inventors: Seong-Ho Kang, Yong Eun Seo, Sang-Chul Byon, Yong Sang Kim
  • Patent number: 7348938
    Abstract: A method and apparatus of driving a plasma display panel that is adaptive for making a stable operation at both a low temperature and a high temperature. In the apparatus, a scan driver applies a first sustaining pulse to a scan electrode during a sustain period. A sustain driver applies a second sustaining pulse alternating with the first sustaining pulse to a common sustain electrode during the sustain period. A sustain voltage source supplies a driving voltage to the scan driver and the sustain driver such that the first and second sustaining pulses can be applied. A controller controls a voltage value of the driving voltage in correspondence with a driving temperature at which the panel is driven.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: March 25, 2008
    Assignee: LG Electronics Inc.
    Inventors: Seong Ho Kang, Sang Jin Yun
  • Patent number: 7348939
    Abstract: It is disclosed that there are a method and an apparatus of driving a plasma display panel that are adaptive for reducing an initialization period. A driving apparatus and a method of a plasma display panel according to the present invention include a driving circuit applying to the plasma display panel a ramp-up waveform rising from a first bias voltage and a ramp-down waveform falling down from a second bias voltage.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: March 25, 2008
    Assignee: LG Electronics Inc.
    Inventors: Eun Cheol Lee, Seong Ho Kang
  • Patent number: 7271782
    Abstract: A plasma display driving method and apparatus for stabilizing an initialization upon selective erasing in a case of simultaneously performing a selective writing and a selective erasing is disclosed. In the method and apparatus, at least one selective writing sub-field for selecting on-cells using a writing discharge is arranged within a portion of one frame period, and at least one selective erasing sub-field for selecting off-cells from the on-cells using an erase discharge is arranged within the remaining interval of one frame period other than a time period arranged with the selective writing sub-field. A normal sustaining pulse is applied to the selected on-cells to sustain a discharge of the on-cells, and an initialization pulse having at least one of a pulse width and a voltage level set to be larger than the normal sustaining pulse is applied prior to said selective erasing sub-fields.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: September 18, 2007
    Assignee: LG Electronics Inc.
    Inventors: Sang Jin Yoon, Seong Ho Kang