Patents by Inventor Sang-Su HAN
Sang-Su 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).
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Publication number: 20240081104Abstract: A display device includes a base substrate, a pixel defining layer disposed on the base substrate and including a first opening, a light emitting structure disposed in the first opening of the pixel defining layer, a thin film encapsulation layer disposed on the light emitting structure, a touch electrode disposed on the thin film encapsulation layer, an insulating pattern disposed on the touch electrode and including a second opening which overlaps the first opening, and a high refractive layer disposed on the insulating pattern, the high refractive layer including a plurality of grid patterns disposed on a top surface of the high refractive layer, and a refractive index higher than a refractive index of the insulating pattern.Type: ApplicationFiled: November 13, 2023Publication date: March 7, 2024Applicant: Samsung Display Co., LTD.Inventors: Jin-Su BYUN, Sang Hyun LEE, Sae Hee HAN, Ji-Hyun KIM
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Patent number: 11893927Abstract: A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.Type: GrantFiled: January 6, 2023Date of Patent: February 6, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jung Taek Kim, Kyun Ho Kim, Jae Woo Ryu, Joon Suk Baik, Se Keun Lee, Sang Su Han
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Publication number: 20230419877Abstract: A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.Type: ApplicationFiled: September 11, 2023Publication date: December 28, 2023Inventors: Sang Su HAN, Kyun Ho KIM, Seong Jun KIM, Jung Taek KIM, Hyung Keun PARK, Joon Suk BAIK, Se Keun LEE
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Publication number: 20230316994Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.Type: ApplicationFiled: June 1, 2023Publication date: October 5, 2023Inventors: Jung Taek KIM, Sang Su HAN, Kyun Ho KIM, Hyung Keun PARK, Joon Suk BAIK, Se Keun LEE
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Patent number: 11756474Abstract: A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.Type: GrantFiled: December 30, 2022Date of Patent: September 12, 2023Assignee: Samsung Display Co., Ltd.Inventors: Sang Su Han, Kyun Ho Kim, Seong Jun Kim, Jung Taek Kim, Hyung Keun Park, Joon Suk Baik, Se Keun Lee
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Patent number: 11670225Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.Type: GrantFiled: March 21, 2022Date of Patent: June 6, 2023Assignee: Samsung Display Co., Ltd.Inventors: Jung Taek Kim, Sang Su Han, Kyun Ho Kim, Hyung Keun Park, Joon Suk Baik, Se Keun Lee
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Publication number: 20230146329Abstract: A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.Type: ApplicationFiled: December 30, 2022Publication date: May 11, 2023Inventors: Sang Su HAN, Kyun Ho KIM, Seong Jun KIM, Jung Taek KIM, Hyung Keun PARK, Joon Suk BAIK, Se Keun LEE
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Publication number: 20230142908Abstract: A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.Type: ApplicationFiled: January 6, 2023Publication date: May 11, 2023Inventors: Jung Taek KIM, Kyun Ho KIM, Jae Woo RYU, Joon Suk BAIK, Se Keun LEE, Sang Su HAN
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Patent number: 11632046Abstract: A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.Type: GrantFiled: May 30, 2022Date of Patent: April 18, 2023Assignee: Samsung Display Co., Ltd.Inventors: Kyun Ho Kim, Jung-taek Kim, Joon Suk Baik, Sang Su Han, Jae Woo Ryu, Myung Ho Lee
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Patent number: 11574574Abstract: A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.Type: GrantFiled: April 1, 2021Date of Patent: February 7, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jung Taek Kim, Kyun Ho Kim, Jae Woo Ryu, Joon Suk Baik, Se Keun Lee, Sang Su Han
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Patent number: 11545068Abstract: A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.Type: GrantFiled: September 29, 2020Date of Patent: January 3, 2023Assignee: Samsung Display Co., Ltd.Inventors: Sang Su Han, Kyun Ho Kim, Seong Jun Kim, Jung Taek Kim, Hyung Keun Park, Joon Suk Baik, Se Keun Lee
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Publication number: 20220294342Abstract: A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.Type: ApplicationFiled: May 30, 2022Publication date: September 15, 2022Inventors: Kyun Ho KIM, Jung-taek KIM, Joon Suk BAIK, Sang Su HAN, Jae Woo RYU, Myung Ho LEE
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Publication number: 20220208085Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.Type: ApplicationFiled: March 21, 2022Publication date: June 30, 2022Inventors: Jung Taek KIM, Sang Su HAN, Kyun Ho KIM, Hyung Keun PARK, Joon Suk BAIK, Se Keun LEE
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Patent number: 11349392Abstract: A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.Type: GrantFiled: May 11, 2020Date of Patent: May 31, 2022Inventors: Kyun Ho Kim, Jung-taek Kim, Joon Suk Baik, Sang Su Han, Jae Woo Ryu, Myung Ho Lee
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Patent number: 11289018Abstract: A display device includes: a net power control circuit configured to analyze a screen load from an input image signal to generate a load signal including a load value corresponding to the screen load; and an overcurrent protection circuit configured to set a set current value at a predetermined ratio with respect to a global current value corresponding to the load value included in the load signal, and to determine whether or not the display device is powered off based on the set current value.Type: GrantFiled: October 7, 2020Date of Patent: March 29, 2022Assignee: Samsung Display Co., Ltd.Inventors: Kyun Ho Kim, Yong-Jin Shin, Seong Jun Kim, Jung-Taek Kim, Joon Suk Baik, Se Keun Lee, Uk Jae Jang, Sang Su Han
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Patent number: 11282441Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.Type: GrantFiled: September 29, 2020Date of Patent: March 22, 2022Assignee: Samsung Display Co., Ltd.Inventors: Jung Taek Kim, Sang Su Han, Kyun Ho Kim, Hyung Keun Park, Joon Suk Baik, Se Keun Lee
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Publication number: 20220084450Abstract: A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.Type: ApplicationFiled: April 1, 2021Publication date: March 17, 2022Inventors: Jung Taek KIM, Kyun Ho KIM, Jae Woo RYU, Joon Suk BAIK, Se Keun LEE, Sang Su HAN
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Patent number: 11205368Abstract: A display device and a method of driving the same are described. The display device includes: an over driver to overdrive current frame data included in input image data to output overdriving frame data; a data driver to generate a data signal for the current frame data based on the overdriving frame data; and a display panel including a plurality of pixels to receive the data signal, the over driver may calculate a temporal change rate or a spatial change rate of the input image data, and output the overdriving frame data utilizing a reference formula having a first main parameter determined according to the calculated result. Therefore, overdriving may be performed dynamically according to the spatial change rate or the temporal change rate of the input image data.Type: GrantFiled: August 31, 2020Date of Patent: December 21, 2021Assignee: Samsung Display Co., Ltd.Inventors: Jong Man Kim, Sang Su Han, Da Eun Kang, Jae Woo Ryu
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Patent number: 11138940Abstract: A display device includes a scan driver which includes a first stage including a first output terminal connected to a first carry line, a second output terminal connected to a first scan line, and a third output terminal connected to a first sensing line, and a second stage including a first input terminal connected to the first carry line, a fourth output terminal connected to a second scan line, and a fifth output terminal connected to a second sensing line. In a sensing period, signals having a turn-on level are respectively output from the first output terminal, the second output terminal, and the third output terminal during a predetermined delay period before signals having a turn-on level are respectively output from the fourth output terminal and the fifth output terminal.Type: GrantFiled: August 31, 2020Date of Patent: October 5, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang Su Han, Kyun Ho Kim, Jung Taek Kim, Joon Suk Baik, Se Keun Lee
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Patent number: 11132949Abstract: A compensation method of a display device includes: sensing a first luminance of the display device when a first pattern is displayed on the display device; calculating a luminance prediction value corresponding to a second pattern to be displayed on the display device based on the first luminance, where the second pattern is different from the first pattern; sensing a second luminance of the display device when the second pattern is displayed on the display device; adjusting a current flowing in a first power line of the display device until the second luminance reaches the luminance prediction value; and storing compensation data corresponding to an adjusted current in a lookup table when the second luminance reaches the luminance prediction value.Type: GrantFiled: August 3, 2020Date of Patent: September 28, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kyun Ho Kim, Jung Taek Kim, Jae Woo Ryu, Joon Suk Baik, Yong Jin Shin, Uk Jae Jang, Ki Hyun Pyun, Sang Su Han