Patents by Inventor Young Sun Na
Young Sun Na 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).
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Patent number: 11393406Abstract: The present disclosure relates to a semiconductor integrated circuit for driving a display, and more particularly, to a semiconductor integrated circuit for driving a display to supply gamma voltages to respective DACs through a gamma bus to which a plurality of gamma voltage circuits are connected.Type: GrantFiled: September 28, 2020Date of Patent: July 19, 2022Assignee: SILICON WORKS CO., LTD.Inventor: Young Sun Na
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Publication number: 20210118376Abstract: The present disclosure relates to a semiconductor integrated circuit for driving a display, and more particularly, to a semiconductor integrated circuit for driving a display to supply gamma voltages to respective DACs through a gamma bus to which a plurality of gamma voltage circuits are connected.Type: ApplicationFiled: September 28, 2020Publication date: April 22, 2021Inventor: Young Sun NA
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Patent number: 10627966Abstract: The present disclosure provides technology for an in-cell organic light-emitting display device. The present disclosure enables one component of an organic light-emitting display device to be used not only for a display operation but also for a touch operation, thus achieving an in-cell organic light-emitting display device.Type: GrantFiled: October 17, 2017Date of Patent: April 21, 2020Assignee: Silicon Works Co., Ltd.Inventor: Young Sun Na
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Patent number: 10460672Abstract: The present invention generates overdriving image data by compressing and storing image data and comparing stored previous-period image data and current-period image data. The present invention controls a data voltage upward or downward through overdriving image data, thereby improving the reaction speed of a pixel.Type: GrantFiled: July 11, 2017Date of Patent: October 29, 2019Assignee: SILICON WORKS CO., LTD.Inventors: You Shin Lee, Young Jun Jun, Young Sun Na, Jae Hwan Lim, Seong Hyeon Jo
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Publication number: 20180113531Abstract: The present disclosure provides technology for an in-cell organic light-emitting display device. The present disclosure enables one component of an organic light-emitting display device to be used not only for a display operation but also for a touch operation, thus achieving an in-cell organic light-emitting display device.Type: ApplicationFiled: October 17, 2017Publication date: April 26, 2018Inventor: Young Sun NA
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Publication number: 20180018922Abstract: The present invention generates overdriving image data by compressing and storing image data and comparing stored previous-period image data and current-period image data. The present invention controls a data voltage upward or downward through overdriving image data, thereby improving the reaction speed of a pixel.Type: ApplicationFiled: July 11, 2017Publication date: January 18, 2018Inventors: You Shin LEE, Young Jun JUN, Young Sun NA, Jae Hwan LIM, Seong Hyeon JO
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Patent number: 7561125Abstract: Data drive circuit for a current writing type AMOEL display panel including a plurality of current output channels, and a plurality of channel current generating circuits on respective current output channels for minimizing a difference of current levels occurred between the current output channels, each inclusive of one pair of transistors, a current generating part for generating a current of a small deviation proportional to square of a difference of threshold voltages of the one pair of the transistors, and a current mirror part for mirroring the current, and forwarding the mirrored current as a channel current for the channel, thereby minimizing a difference of current levels occurred between output channels, and driving the AMOEL display panel uniformly.Type: GrantFiled: October 14, 2005Date of Patent: July 14, 2009Assignee: LG Display Co., Ltd.Inventors: Hak Soo Kim, Young Sun Na, Oh Kyoung Kwan
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Patent number: 6982687Abstract: Data drive circuit for a current writing type AMOEL display panel including a plurality of current output channels, and a plurality of channel current generating circuits on respective current output channels for minimizing a difference of current levels occurred between the current output channels, each inclusive of one pair of transistors, a current generating part for generating a current of a small deviation proportional to square of a difference of threshold voltages of the one pair of the transistors, and a current mirror part for mirroring the current, and forwarding the mirrored current as a channel current for the channel, thereby minimizing a difference of current levels occurred between output channels, and driving the AMOEL display panel uniformly.Type: GrantFiled: January 6, 2003Date of Patent: January 3, 2006Assignee: LG Electronics Inc.Inventors: Hak Soo Kim, Young Sun Na, Oh Kyoung Kwan
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Patent number: 6917350Abstract: A driving circuit of an active matrix method in a display device is disclosed, which can compensate luminance deviation of the display device according to threshold voltage deviation of a driving unit. The driving circuit of the active matrix method includes a switching unit switching a current applied from the driving unit to the display device, and a deviation compensator detecting the current applied to the display device by switching of a second switch, and controlling a control voltage, thereby compensating luminance deviation of the display device according to threshold voltage deviation of the driving unit.Type: GrantFiled: January 3, 2002Date of Patent: July 12, 2005Assignee: LG Electronics Inc.Inventors: Han Su Pae, Young Sun Na, Oh Kyong Kwon, Hak Su Kim
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Patent number: 6667580Abstract: A circuit for driving a display of current driven type, and more particularly, to circuit and method for driving a display of current driven type, in which a pre-charging static power source is provided separately for implementing a low power consumption. The circuit for driving a display of current driven type comprises an organic EL, pixel, a scan driving part for making the pixel to emit a light in response to a scan signal, a first static current source for being controlled so as to be turned on/off in response to a data enable signal, to supply a current to the pixel, a second static current source for being controlled so as to be turned on/off in response to a precharge signal, to supply a current to the pixel for precharging the pixel, and a controlling part for controlling amounts of the currents from the static current sources.Type: GrantFiled: July 3, 2002Date of Patent: December 23, 2003Assignee: LG Electronics Inc.Inventors: Hak Su Kim, Young Sun Na, Oh Kyong Kwon
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Patent number: 6633136Abstract: A current control circuit for a display device is disclosed. The current control circuit for a display device includes a current mirror circuit consisted of high voltage electronic devices, for outputting current equivalent to a power source voltage to a load, a current set unit connected with the current mirror circuit, for setting a value of the current flowing in the load, and a switching element connected with the current mirror circuit, for switching the operation of the current set unit through an external control signal. An amount of the current applied to the load can accurately be controlled due to nonlinear characteristic of the high voltage devices.Type: GrantFiled: July 25, 2001Date of Patent: October 14, 2003Assignee: LG Electronics Inc.Inventors: Hak Su Kim, Young Sun Na
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Publication number: 20030128202Abstract: Data drive circuit for a current writing type AMOEL display panel including a plurality of current output channels, and a plurality of channel current generating circuits on respective current output channels for minimizing a difference of current levels occurred between the current output channels, each inclusive of one pair of transistors, a current generating part for generating a current of a small deviation proportional to square of a difference of threshold voltages of the one pair of the transistors, and a current mirror part for mirroring the current, and forwarding the mirrored current as a channel current for the channel, thereby minimizing a difference of current levels occurred between output channels, and driving the AMOEL display panel uniformly.Type: ApplicationFiled: January 6, 2003Publication date: July 10, 2003Applicant: LG Electronics Inc.Inventors: Hak Soo Kim, Young Sun Na, Oh Kyoung Kwan
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Patent number: 6535185Abstract: An active driving circuit for a display panel includes first to fourth transistors, a capacitor, a constant current source, and a capacitor. The first transistor is connected with a positive power source. The second transistor has a common gate terminal together with the first transistor and a mirror circuit against the first transistor. Also, the second transistor is turned on by a common gate signal applied to the common gate terminal to supply the positive power source to a display device. The third transistor sets a saturated threshold voltage for the common gate terminal by allowing the first transistor and the second transistor to constitute a mirror circuit against each other in accordance with a scan line signal. The constant current source supplies a current with a ground one side and controlled by a gray signal of a data line. The fourth transistor sets the common gate voltage corresponding to the controlled current of the constant current source by the scan line signal.Type: GrantFiled: March 5, 2001Date of Patent: March 18, 2003Assignee: LG Electronics Inc.Inventors: Hak Su Kim, Oh Kyong Kwon, Young Sun Na
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Publication number: 20030006713Abstract: The present invention relates to circuit for driving a display of current driven type, and more particularly, to circuit and method for driving a display of current driven type, in which a pre-charging static power source is provided separately for implementing a low power consumption. The present invention includes A circuit for driving a display of current driven type comprises an organic EL, pixel, a scan driving part for making the pixel to emit a light in response to a scan signal, a first static current source for being controlled so as to be turned on/off in response to a data enable signal, to supply a current to the pixel, a second static current source for being controlled so as to be turned on/off in response to a precharge signal, to supply a current to the pixel for precharging the pixel, and a controlling part for controlling amounts of the currents from the static current sources.Type: ApplicationFiled: July 3, 2002Publication date: January 9, 2003Applicant: LG Electronics Inc.Inventors: Hak Su Kim, Young Sun Na, Oh Kyong Kwon
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Publication number: 20020089357Abstract: A driving circuit of an active matrix method in a display device is disclosed, which can compensate luminance deviation of the display device according to threshold voltage deviation of a driving unit. The driving circuit of the active matrix method includes a switching unit switching a current applied from the driving unit to the display device, and a deviation compensator detecting the current applied to the display device by switching of a second switch, and controlling a control voltage, thereby compensating luminance deviation of the display device according to threshold voltage deviation of the driving unit.Type: ApplicationFiled: January 3, 2002Publication date: July 11, 2002Applicant: LG Electronics Inc.Inventors: Han Su Pae, Young Sun Na, Oh Kyong Kwon, Hak Su Kim
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Publication number: 20020060524Abstract: A current control circuit for a display device is disclosed. The current control circuit for a display device includes a current mirror circuit consisted of high voltage electronic devices, for outputting current equivalent to a power source voltage to a load, a current set unit connected with the current mirror circuit, for setting a value of the current flowing in the load, and a switching element connected with the current mirror circuit, for switching the operation of the current set unit through an external control signal. An amount of the current applied to the load can accurately be controlled due to nonlinear characteristic of the high voltage devices.Type: ApplicationFiled: July 25, 2001Publication date: May 23, 2002Inventors: Hak Su Kim, Young Sun Na
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Patent number: 6369783Abstract: The present invention generates a cell driving apparatus of a field emission display capable of increasing a grey level and minimizing an area problem by designing a current mode DAC which contains low voltage devices.Type: GrantFiled: May 11, 1999Date of Patent: April 9, 2002Assignee: Orion Electric Co., Ltd.Inventors: Oh Kyong Kwon, Young Sun Na
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Publication number: 20010019327Abstract: An active driving circuit for a display panel includes first to fourth transistors, a capacitor, a constant current source, and a capacitor. The first transistor is connected with a positive power source. The second transistor has a common gate terminal together with the first transistor and a mirror circuit against the first transistor. Also, the second transistor is turned on by a common gate signal applied to the common gate terminal to supply the positive power source to a display device. The third transistor sets a saturated threshold voltage for the common gate terminal by allowing the first transistor and the second transistor to constitute a mirror circuit against each other in accordance with a scan line signal. The constant current source supplies a current with a ground one side and controlled by a gray signal of a data line. The fourth transistor sets the common gate voltage corresponding to the controlled current of the constant current source by the scan line signal.Type: ApplicationFiled: March 5, 2001Publication date: September 6, 2001Applicant: LG Electronics Inc.Inventors: Hak Su Kim, Oh Kyong Kwon, Young Sun Na
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Patent number: 6097359Abstract: A cell driving device of a field emission display according to a passive matrix addressing method having a field emission pixel cell with a cathode (10) and a gate electrode (12) for emitting electrons from the cathode. The cell driving device includes at least two current sources (18, 20) disposed to provide a current signal to the cathode; and a controlling part (22) for selectively driving at least two current sources (18, 20) according to the size of a video signal.Type: GrantFiled: October 21, 1997Date of Patent: August 1, 2000Assignee: Orion Electric Co., Ltd.Inventors: Oh Kyong Kwon, Young Sun Na, Chang Ho Hyun, Gun Mu Her
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Patent number: 5953003Abstract: A flat display driving includes a gate driving circuit for sequentially and selectively applying a high voltage to a plurality of gate lines to drives them; a data driving circuit which includes a shift register for sequentially inputting one line of pixel data, a current source array which inputs on line of pixel data from the shift register, generates one line of current signals corresponding to each logic value of the pixel data and applies one line of current signals to the data lines and a latch type transmission array connected between the shift register and the current source array, for adjusting the supply time of one line of pixel data to be applied to the current source array, thereby driving the pixels on one horizontal line of the field emission display by the current signals for a predetermined time period; and a control circuit which processes a video signal into a series type of pixel data, supplies it to the data driving circuit and generates control signals required for the data driving circuType: GrantFiled: October 6, 1997Date of Patent: September 14, 1999Assignee: Orion Electric Co. Ltd.Inventors: Oh Kyong Kwon, Young Sun Na, Chang Ho Hyun, Gun Mu Her