Patents by Inventor Kyoung-Ju Shin
Kyoung-Ju Shin 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: 12008947Abstract: A pixel includes a light emitting element, a first transistor connected to the light emitting element, a second transistor connected between a data line and a first electrode of the first transistor, a third transistor connected between a gate electrode of the first transistor T1 and a second electrode of the first transistor, a fourth transistor connected between a gate electrode of the first transistor and an initialization power source, and a storage capacitor connected between the first power source and the gate electrode of the first transistor. A voltage provided through the data line is time divided into a data voltage provided to the gate electrode of the first transistor when both the second and third transistors turn on, and an on-bias voltage provided to the first electrode of the first transistor when the second transistor turns on and the third transistor turns off.Type: GrantFiled: November 8, 2022Date of Patent: June 11, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kyoung Ju Shin, Hee Ju Ma, Sung Rak Hong
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Publication number: 20240013722Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: ApplicationFiled: September 25, 2023Publication date: January 11, 2024Applicant: Samsung Display Co., Ltd.Inventors: Chong Chul CHAI, Dong Woo KIM, Kyoung Ju SHIN, Bo Yong CHUNG
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Patent number: 11769451Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: GrantFiled: May 12, 2021Date of Patent: September 26, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Chong Chui Chai, Dong Woo Kim, Kyoung Ju Shin, Bo Yong Chung
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Publication number: 20230145644Abstract: A pixel includes a light emitting element, a first transistor connected to the light emitting element, a second transistor connected between a data line and a first electrode of the first transistor, a third transistor connected between a gate electrode of the first transistor T1 and a second electrode of the first transistor, a fourth transistor connected between a gate electrode of the first transistor and an initialization power source, and a storage capacitor connected between the first power source and the gate electrode of the first transistor. A voltage provided through the data line is time divided into a data voltage provided to the gate electrode of the first transistor when both the second and third transistors turn on, and an on-bias voltage provided to the first electrode of the first transistor when the second transistor turns on and the third transistor turns off.Type: ApplicationFiled: November 8, 2022Publication date: May 11, 2023Inventors: Kyoung Ju SHIN, Hee Ju MA, Sung Rak HONG
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Patent number: 11348522Abstract: A display device includes: pixels to emit light of various intensity in accordance with driving signals; data lines to communicate the driving signals to the pixels; scan lines to communicate scan signals to select at least one of the pixels to receive the driving signals; a first power supply to supply at least one driving voltage to the pixels; and a second power supply including an initial voltage terminal to supply an initial voltage to the pixels.Type: GrantFiled: December 17, 2020Date of Patent: May 31, 2022Assignee: Samsung Display Co., Ltd.Inventors: Keunwoo Kim, Sooyoung Park, Joonghyun Park, Dongwoo Kim, Kyoung-Ju Shin
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Publication number: 20210264856Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: ApplicationFiled: May 12, 2021Publication date: August 26, 2021Applicant: Samsung Display Co., Ltd.Inventors: Chong Chul CHAI, Dong Woo KIM, Kyoung Ju SHIN, Bo Yong CHUNG
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Patent number: 11024227Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: GrantFiled: December 10, 2019Date of Patent: June 1, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Chong Chul Chai, Dong Woo Kim, Kyoung Ju Shin, Bo Yong Chung
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Patent number: 11017720Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: GrantFiled: December 10, 2019Date of Patent: May 25, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Chong Chui Chai, Dong Woo Kim, Kyoung Ju Shin, Bo Yong Chung
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Patent number: 10977997Abstract: A pixel includes an organic light emitting diode, a first transistor, a second transistor, and a third transistor. The first transistor includes a first electrode, a second electrode, and a gate electrode and may control a current applied to the organic light emitting diode from a first power source, wherein the gate electrode is electrically connected to a first node. The second transistor is electrically connected between the organic light emitting diode and the second electrode of the first transistor and may turn on in response to a first emission control signal. The third transistor is electrically connected between the first power source and the first electrode of the first transistor and may turn on in response to a second emission control signal. The second transistor may turn on two or more times during one frame. The third transistor may turn on exactly once in the one frame.Type: GrantFiled: October 9, 2018Date of Patent: April 13, 2021Inventors: Ji Tae Kim, Kyoung Ju Shin
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Publication number: 20210104194Abstract: A display device includes: pixels to emit light of various intensity in accordance with driving signals; data lines to communicate the driving signals to the pixels; scan lines to communicate scan signals to select at least one of the pixels to receive the driving signals; a first power supply to supply at least one driving voltage to the pixels; and a second power supply including an initial voltage terminal to supply an initial voltage to the pixels.Type: ApplicationFiled: December 17, 2020Publication date: April 8, 2021Inventors: Keunwoo Kim, Sooyoung Park, Joonghyun Park, Dongwoo Kim, Kyoung-Ju Shin
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Patent number: 10957253Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: GrantFiled: December 10, 2019Date of Patent: March 23, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Chong Chui Chai, Dong Woo Kim, Kyoung Ju Shin, Bo Yong Chung
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Patent number: 10902778Abstract: A display device includes: pixels to emit light of various intensity in accordance with driving signals; data lines to communicate the driving signals to the pixels; scan lines to communicate scan signals to select at least one of the pixels to receive the driving signal; and a power supply to supply at least one driving voltage to the pixels. The at least one pixel includes: a switching transistor including an oxide transistor, the switching transistor having a first electrode connected to the data line, a second electrode connected to a first node, and first and second gate electrodes, each of which is connected to one of the scan lines, and a driving transistor including a poly-silicon transistor, and the driving transistor being connected between the power supply and an organic light emitting diode.Type: GrantFiled: November 15, 2019Date of Patent: January 26, 2021Assignee: Samsung Display Co., Ltd.Inventors: Keunwoo Kim, Sooyoung Park, Joonghyun Park, Dongwoo Kim, Kyoung-Ju Shin
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Patent number: 10783832Abstract: A scan driver, includes a plurality of stage circuits, each of which includes a driving circuit unit providing an output signal and an inverter inverting the output signal of the driving circuit unit and generating a scan signal, in which the inverter includes a first transistor and a second transistor, which are complementarily operated, the first transistor is a P-type polysilicon transistor, and the second transistor is an N-type oxide semiconductor transistor. A display device may include the scan driver.Type: GrantFiled: December 17, 2017Date of Patent: September 22, 2020Assignee: Samsung Display Co., Ltd.Inventors: Kyoung Ju Shin, Cheol Gon Lee, Sang Uk Lim, Chang Yong Jeong
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Patent number: 10699616Abstract: In a scan driver including a plurality of stages configured to supply scan signals to scan lines, the scan driver includes: an i?1th stage configured to supply an i?1th scan signal to an i?1th scan line while controlling a node Qi?1 (i is a natural number) in response to a first clock signal, a third clock signal, and a control voltage; an ith stage configured to supply an ith scan signal to an ith scan line while controlling a node Qi in response to a second clock signal, a fourth clock signal, and the control voltage; and a controller connected to the i?1th stage and the ith stage, and configured to supply the control voltage.Type: GrantFiled: June 25, 2018Date of Patent: June 30, 2020Assignee: Samsung Display Co., Ltd.Inventors: Jun Hyun Park, Keum Nam Kim, Sung Hwan Kim, Kyoung Ju Shin
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Patent number: 10657913Abstract: A display panel includes a gate line, first and second data lines, first and second gate control lines, and first and second pixels. The first pixel includes a double-gate switching element including a gate electrode connected to the gate line, a source electrode connected to the first data line, and another gate electrode connected to the first gate control line. The second pixel includes a double-gate switching element including a gate electrode connected to the gate line, a source electrode connected to the second data line, and a gate electrode connected to the second gate control line. A data voltage having a first polarity is applied to the first data line, another data voltage having a second polarity is applied to the second data line, and first and second gate control voltages are respectively applied to the first and second gate control lines.Type: GrantFiled: May 11, 2016Date of Patent: May 19, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jun Hyun Park, Kyoung-Ju Shin
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Publication number: 20200118491Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: ApplicationFiled: December 10, 2019Publication date: April 16, 2020Applicant: Samsung Display Co., Ltd.Inventors: Chong Chul CHAI, Dong Woo KIM, Kyoung Ju SHIN, Bo Yong CHUNG
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Publication number: 20200111416Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: ApplicationFiled: December 10, 2019Publication date: April 9, 2020Applicant: Samsung Display Co., Ltd.Inventors: Chong Chul CHAI, Dong Woo KIM, Kyoung Ju SHIN, Bo Yong CHUNG
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Publication number: 20200111415Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.Type: ApplicationFiled: December 10, 2019Publication date: April 9, 2020Applicant: Samsung Display Co., Ltd.Inventors: Chong Chul CHAI, Dong Woo KIM, Kyoung Ju SHIN, Bo Yong CHUNG
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Publication number: 20200082755Abstract: A display device includes: pixels to emit light of various intensity in accordance with driving signals; data lines to communicate the driving signals to the pixels; scan lines to communicate scan signals to select at least one of the pixels to receive the driving signal; and a power supply to supply at least one driving voltage to the pixels. The at least one pixel includes: a switching transistor including an oxide transistor, the switching transistor having a first electrode connected to the data line, a second electrode connected to a first node, and first and second gate electrodes, each of which is connected to one of the scan lines, and a driving transistor including a poly-silicon transistor, and the driving transistor being connected between the power supply and an organic light emitting diode.Type: ApplicationFiled: November 15, 2019Publication date: March 12, 2020Inventors: Keunwoo KIM, Sooyoung PARK, Joonghyun PARK, Dongwoo KIM, Kyoung-Ju SHIN
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Patent number: 10546536Abstract: A stage includes first, second, and third outputs and first and second signal processors. The first output supplies a scan signal to a first output terminal based on signals to first and second input terminals and the voltage of a first node. The second output is connected to a first power source and supplies an emission control signal to a second output terminal based on signals to the first input terminal, the first output terminal, and a third input terminal. The third output is connected to the first power source and supplies an inverted emission control signal to a third output terminal based on signals to the first input terminal and second output terminal. The first signal processor controls the first node voltage based on a signal to a fourth input terminal. The second signal processor controls the first node voltage based on the signal to the second input terminal.Type: GrantFiled: June 19, 2017Date of Patent: January 28, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung Hwan Kim, Jun Hyun Park, Kyoung Ju Shin