Patents by Inventor Si-Baek PYO
Si-Baek PYO 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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Organic light emitting display device and method of driving an organic light emitting display device
Patent number: 9542887Abstract: An organic light emitting diode display device including: a display panel including a plurality of pixels, a scan driving unit configured to supply a scan signal to the pixels via a plurality of scan lines, a data driving unit configured to supply a data signal to the pixels via a plurality of data lines, an emission driving unit configured to supply an emission control signal to the pixels via a plurality of emission control lines, and a timing control unit configured to control the scan driving unit, the data driving unit, and the emission driving unit, and to control the emission driving unit to gradually change an off-period of the emission control signal each time a number of image frames are displayed.Type: GrantFiled: November 18, 2014Date of Patent: January 10, 2017Assignee: Samsung Display Co., Ltd.Inventor: Si-Baek Pyo -
Patent number: 9478166Abstract: A driving method for dimming an organic light-emitting diode (OLED) display is disclosed. In one aspect, the method includes selecting a dimming mode indicating a maximum luminance to be displayed by the OLED display based on an input and determining a luminance range from a plurality of luminance ranges. The determined luminance range comprises the maximum luminance of the dimming mode. The method also includes performing at least one of converting image data based at least in part on the dimming mode or controlling a duty ratio of an emission control signal, wherein the performing is based at least in part on the determined luminance range.Type: GrantFiled: March 25, 2014Date of Patent: October 25, 2016Assignee: Samsung Display Co., Ltd.Inventors: Si-Baek Pyo, Young-Seob Kim
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Patent number: 9460657Abstract: A display device includes a pixel unit including a plurality of pixels that have light-emitting time periods adjusted in response to light-emitting control signals, and a brightness control unit that adjusts a duty ratio of the light-emitting control signals and setting gamma and that converts image data according to a brightness mode.Type: GrantFiled: March 11, 2013Date of Patent: October 4, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Si-Baek Pyo
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Patent number: 9208718Abstract: In a method of compensating gamma reference voltages includes setting a plurality of emission signal on-duty ratios that have different values in a range from 0% to 100%, setting a plurality of data offsets for the emission signal on-duty ratios and each of the data offsets being set based on a color shift, the color shift being caused according to the emission signal on-duty ratios, generating a plurality of compensation gamma reference voltages by multiplying a gamma reference voltage by the data offsets, and applying the compensation gamma reference voltages to an organic light emitting display panel in dimming ranges that include the emission signal on-duty ratios, respectively.Type: GrantFiled: March 13, 2015Date of Patent: December 8, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Si-Baek Pyo
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ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF DRIVING AN ORGANIC LIGHT EMITTING DISPLAY DEVICE
Publication number: 20150279274Abstract: An organic light emitting diode display device including: a display panel including a plurality of pixels, a scan driving unit configured to supply a scan signal to the pixels via a plurality of scan lines, a data driving unit configured to supply a data signal to the pixels via a plurality of data lines, an emission driving unit configured to supply an emission control signal to the pixels via a plurality of emission control lines, and a timing control unit configured to control the scan driving unit, the data driving unit, and the emission driving unit, and to control the emission driving unit to gradually change an off-period of the emission control signal each time a number of image frames are displayed.Type: ApplicationFiled: November 18, 2014Publication date: October 1, 2015Inventor: Si-Baek Pyo -
Publication number: 20150187264Abstract: In a method of compensating gamma reference voltages includes setting a plurality of emission signal on-duty ratios that have different values in a range from 0% to 100%, setting a plurality of data offsets for the emission signal on-duty ratios and each of the data offsets being set based on a color shift, the color shift being caused according to the emission signal on-duty ratios, generating a plurality of compensation gamma reference voltages by multiplying a gamma reference voltage by the data offsets, and applying the compensation gamma reference voltages to an organic light emitting display panel in dimming ranges that include the emission signal on-duty ratios, respectively.Type: ApplicationFiled: March 13, 2015Publication date: July 2, 2015Inventor: Si-Baek PYO
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Patent number: 9013519Abstract: There is provided an organic light emitting display capable of improving the display quality of a low brightness region. The organic light emitting display includes pixels positioned at intersections of scan lines, emission control lines, and data lines, a converter for receiving data to generate brightness values, a timing controller for extracting emission time values and gamma values to correspond to the brightness values, an emission control line driver for supplying emission control signals to the emission control lines so that emission times of the pixels are controlled to correspond to the emission time values, and a gamma voltage generator for generating gamma voltages corresponding to the gamma values.Type: GrantFiled: September 14, 2012Date of Patent: April 21, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jung-Kook Park, Jae-Yong Kim, Byung-Hoon Chae, Si-Baek Pyo
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Publication number: 20150097764Abstract: A driving method for dimming an organic light-emitting diode (OLED) display is disclosed. In one aspect, the method includes selecting a dimming mode indicating a maximum luminance to be displayed by the OLED display based on an input and determining a luminance range from a plurality of luminance ranges. The determined luminance range comprises the maximum luminance of the dimming mode. The method also includes performing at least one of converting image data based at least in part on the dimming mode or controlling a duty ratio of an emission control signal, wherein the performing is based at least in part on the determined luminance range.Type: ApplicationFiled: March 25, 2014Publication date: April 9, 2015Applicant: Samsung Display Co., Ltd.Inventors: Si-Baek Pyo, Young-Seob Kim
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Patent number: 8982164Abstract: In a method of compensating gamma reference voltages includes setting a plurality of emission signal on-duty ratios that have different values in a range from 0% to 100%, setting a plurality of data offsets for the emission signal on-duty ratios and each of the data offsets being set based on a color shift, the color shift being caused according to the emission signal on-duty ratios, generating a plurality of compensation gamma reference voltages by multiplying a gamma reference voltage by the data offsets, and applying the compensation gamma reference voltages to an organic light emitting display panel in dimming ranges that include the emission signal on-duty ratios, respectively.Type: GrantFiled: May 3, 2012Date of Patent: March 17, 2015Assignee: Samsung Display Co., Ltd.Inventor: Si-Baek Pyo
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Patent number: 8872993Abstract: A liquid crystal display (LCD) apparatus includes a liquid crystal panel, a printed circuit board (PCB) that generates a driving signal to drive the liquid crystal panel, and a backlight unit between the liquid crystal panel and the PCB. The backlight unit has a through hole formed therein. The LCD also includes a flexible printed circuit (FPC) electrically connected to a driving integrated circuit (IC) of the liquid crystal panel and electrically connected to the PCB in the through hole.Type: GrantFiled: October 17, 2011Date of Patent: October 28, 2014Assignee: Samsung Display Co., Ltd.Inventor: Si-Baek Pyo
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Publication number: 20140125714Abstract: A display device includes a pixel unit including a plurality of pixels that have light-emitting time periods adjusted in response to light-emitting control signals, and a brightness control unit that adjusts a duty ratio of the light-emitting control signals and setting gamma and that converts image data according to a brightness mode.Type: ApplicationFiled: March 11, 2013Publication date: May 8, 2014Inventor: Si-Baek PYO
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Publication number: 20130194316Abstract: There is provided an organic light emitting display capable of improving the display quality of a low brightness region. The organic light emitting display includes pixels positioned at intersections of scan lines, emission control lines, and data lines, a converter for receiving data to generate brightness values, a timing controller for extracting emission time values and gamma values to correspond to the brightness values, an emission control line driver for supplying emission control signals to the emission control lines so that emission times of the pixels are controlled to correspond to the emission time values, and a gamma voltage generator for generating gamma voltages corresponding to the gamma values.Type: ApplicationFiled: September 14, 2012Publication date: August 1, 2013Inventors: Jung-Kook PARK, Jae-Yong KIM, Byung-Hoon CHAE, Si-Baek PYO
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Publication number: 20130176349Abstract: A display device and a method of driving such a display device including a display module and a DC-DC converter provided outside the display module to supply first and second power source voltages to the display module. The display module includes a gamma voltage generator for generating a plurality of gamma voltages from a first driving voltage and a second driving voltage and a driving voltage varying unit for correcting the first driving voltage and the second driving voltage based on a change in the first power source voltage.Type: ApplicationFiled: March 27, 2012Publication date: July 11, 2013Inventors: Jung-Kook Park, Jae-Yong Kim, Byung-Hoon Chae, Joong-Yong Lee, Si-Baek Pyo
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Publication number: 20130169693Abstract: In a method of compensating gamma reference voltages includes setting a plurality of emission signal on-duty ratios that have different values in a range from 0% to 100%, setting a plurality of data offsets for the emission signal on-duty ratios and each of the data offsets being set based on a color shift, the color shift being caused according to the emission signal on-duty ratios, generating a plurality of compensation gamma reference voltages by multiplying a gamma reference voltage by the data offsets, and applying the compensation gamma reference voltages to an organic light emitting display panel in dimming ranges that include the emission signal on-duty ratios, respectively.Type: ApplicationFiled: May 3, 2012Publication date: July 4, 2013Inventor: Si-Baek PYO
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Publication number: 20120182515Abstract: A liquid crystal display (LCD) apparatus includes a liquid crystal panel, a printed circuit board (PCB) that generates a driving signal to drive the liquid crystal panel, and a backlight unit between the liquid crystal panel and the PCB. The backlight unit has a through hole formed therein. The LCD also includes a flexible printed circuit (FPC) electrically connected to a driving integrated circuit (IC) of the liquid crystal panel and electrically connected to the PCB in the through hole.Type: ApplicationFiled: October 17, 2011Publication date: July 19, 2012Inventor: Si-Baek PYO