Patents by Inventor Seong-Heon Cho
Seong-Heon Cho 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: 20250098218Abstract: A thin film transistor includes a first gate electrode on a substrate, a gate insulating film on the first gate electrode, a first active layer on the gate insulating film, a drain electrode on one side of the first active layer, a sidewall spacer on a side wall of the drain electrode, and a first source electrode provided on the other side of the first active layer and a sidewall of the sidewall spacer.Type: ApplicationFiled: July 2, 2024Publication date: March 20, 2025Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jae-Eun PI, Seung Youl KANG, Yong Hae KIM, Joo Yeon KIM, Hee-ok KIM, Jaehyun MOON, Jong-Heon YANG, Himchan OH, Seong-Mok CHO, Ji Hun CHOI, Chi-Sun HWANG
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Publication number: 20250089300Abstract: Provided is an oxide thin film transistor. The transistor includes a gate electrode on a center of a substrate, an active layer provided on the gate electrode and the substrate and including a metal oxide, and a source electrode and a drain electrode provided on the active layer, which is on both sides of the gate electrode. The source electrode and the drain electrode may each include a first metal layer and a second metal layer on the first metal layer.Type: ApplicationFiled: July 9, 2024Publication date: March 13, 2025Inventors: Yong Hae KIM, Chi-Sun HWANG, Jong-Heon YANG, Seong-Mok CHO, Jae-Eun PI
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Patent number: 12211630Abstract: Provided are stretchable electronics and a method for manufacturing the same. The stretchable electronics may include a substrate, a plurality of electronic elements disposed to be spaced apart from each other on the substrate, and a wire structure disposed on the substrate to connect the plurality of electronic elements to each other. The wire structure may include an insulator extending from one of the electronic elements to the other of the adjacent electronic elements and a metal wire configured to cover a top surface and side surfaces of the insulator. The insulator may include at least one bent part in a plan view.Type: GrantFiled: August 16, 2022Date of Patent: January 28, 2025Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Ji Hun Choi, Chan Woo Park, Ji-Young Oh, Seung Youl Kang, Yong Hae Kim, Hee-ok Kim, Jeho Na, Jaehyun Moon, Jong-Heon Yang, Himchan Oh, Seong-Mok Cho, Sung Haeng Cho, Jae-Eun Pi, Chi-Sun Hwang
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Patent number: 12211882Abstract: A display device includes a first display panel; and a second display panel, wherein the first display panel includes a first substrate including a first region and a second region that is thinner than the first region, a first scan driver positioned on one edge of the first region, a second scan driver positioned in the second region, and a plurality of pixels connected to the first scan driver and the second scan driver by a scan line, the second display panel includes a second substrate including a first region and a second region that is thinner than the first region, a first scan driver positioned on one edge of the first region, and a plurality of pixels connected to the first scan driver by a scan line.Type: GrantFiled: October 14, 2021Date of Patent: January 28, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Seong Heon Cho
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Patent number: 12051373Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.Type: GrantFiled: April 24, 2023Date of Patent: July 30, 2024Assignee: Samsung Display Co., Ltd.Inventors: Seong Heon Cho, Hae-Kwan Seo
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Publication number: 20230260464Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.Type: ApplicationFiled: April 24, 2023Publication date: August 17, 2023Inventors: Seong Heon CHO, Hae-Kwan SEO
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Patent number: 11636810Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.Type: GrantFiled: February 7, 2022Date of Patent: April 25, 2023Assignee: Samsung Display Co., Ltd.Inventors: Seong Heon Cho, Hae-Kwan Seo
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Patent number: 11545060Abstract: A display device includes: a plurality of pixels; a first pixel unit comprising a first portion of the plurality of pixels; a second pixel unit comprising a second portion of the plurality of pixels; and a data driver configured to supply a data voltage to the first pixel unit and the second pixel unit, wherein the data driver is configured to generate a data voltage to be supplied to the first pixel unit based on different gamma voltages even when the same grayscale is expressed according to a driving method, and the second pixel unit is configured to be driven or not driven according to the driving method.Type: GrantFiled: December 10, 2020Date of Patent: January 3, 2023Assignee: Samsung Display Co., Ltd.Inventors: Soon Dong Kim, Joon Chul Goh, Bong Hyun You, Byung Ki Chun, Seong Heon Cho
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Patent number: 11425366Abstract: A display device relates to a test image measuring device, and includes a housing including one side in which an opening is defined, and a reflector provided to be inclined by a predetermined angle from another side of the housing facing the opening, where a display device including a display unit and an imaging unit is provided above the opening, and a test image displayed from the display unit is photographed by the imaging unit through the reflector.Type: GrantFiled: March 11, 2020Date of Patent: August 23, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Seuk Yoo, Dong Joon Kwag, Hyung Jin Kim, Seong Heon Cho
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Publication number: 20220165218Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.Type: ApplicationFiled: February 7, 2022Publication date: May 26, 2022Inventors: Seong Heon CHO, Hae-Kwan SEO
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Publication number: 20220123045Abstract: A display device includes a first display panel; and a second display panel, wherein the first display panel includes a first substrate including a first region and a second region that is thinner than the first region, a first scan driver positioned on one edge of the first region, a second scan driver positioned in the second region, and a plurality of pixels connected to the first scan driver and the second scan driver by a scan line, the second display panel includes a second substrate including a first region and a second region that is thinner than the first region, a first scan driver positioned on one edge of the first region, and a plurality of pixels connected to the first scan driver by a scan line.Type: ApplicationFiled: October 14, 2021Publication date: April 21, 2022Inventor: Seong Heon CHO
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Patent number: 11244629Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.Type: GrantFiled: May 29, 2020Date of Patent: February 8, 2022Assignee: Samsung Display Co., Ltd.Inventors: Seong Heon Cho, Hae-Kwan Seo
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Patent number: 11222603Abstract: A display device and a driving method thereof are provided. The display device includes a display including a pixel including a double gate transistor and a light emitting diode, a power supply for supplying power to the display, a current sensor for sensing a current flowing in the display or in the light emitting diode, and a gate voltage controller for providing a bias voltage signal to one gate electrode of the double gate transistor.Type: GrantFiled: March 12, 2020Date of Patent: January 11, 2022Assignee: Samsung Display Co., Ltd.Inventors: Seong Heon Cho, Hae Kwan Seo, Seung Jae Lee
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Publication number: 20210319733Abstract: A display device includes: a plurality of pixels; a first pixel unit comprising a first portion of the plurality of pixels; a second pixel unit comprising a second portion of the plurality of pixels; and a data driver configured to supply a data voltage to the first pixel unit and the second pixel unit, wherein the data driver is configured to generate a data voltage to be supplied to the first pixel unit based on different gamma voltages even when the same grayscale is expressed according to a driving method, and the second pixel unit is configured to be driven or not driven according to the driving method.Type: ApplicationFiled: December 10, 2020Publication date: October 14, 2021Inventors: Soon Dong KIM, Joon Chul GOH, Bong Hyun YOU, Byung Ki CHUN, Seong Heon CHO
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Publication number: 20210110774Abstract: A scan driver includes: a plurality of stages, each stage including: a logic circuit configured to transfer an input signal to a first node in response to a first clock signal, and to bootstrap the first node in response to a second clock signal; a carry output circuit configured to output the second clock signal as a carry signal that is provided as the input signal for a next stage in response to a voltage of the bootstrapped first node; and a masking controller configured to receive a masking signal and the carry signal, and to output the masking signal as a scan signal provided to a pixel row corresponding to the each stage in response to the carry signal.Type: ApplicationFiled: May 29, 2020Publication date: April 15, 2021Inventors: Seong Heon CHO, Hae-Kwan SEO
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Publication number: 20210027719Abstract: A display device and a driving method thereof are provided. The display device includes a display including a pixel including a double gate transistor and a light emitting diode, a power supply for supplying power to the display, a current sensor for sensing a current flowing in the display or in the light emitting diode, and a gate voltage controller for providing a bias voltage signal to one gate electrode of the double gate transistor.Type: ApplicationFiled: March 12, 2020Publication date: January 28, 2021Inventors: Seong Heon CHO, Hae Kwan SEO, Seung Jae LEE
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Publication number: 20210029347Abstract: A display device relates to a test image measuring device, and includes a housing including one side in which an opening is defined, and a reflector provided to be inclined by a predetermined angle from another side of the housing facing the opening, where a display device including a display unit and an imaging unit is provided above the opening, and a test image displayed from the display unit is photographed by the imaging unit through the reflector.Type: ApplicationFiled: March 11, 2020Publication date: January 28, 2021Inventors: Hyun Seuk YOO, Dong Joon KWAG, Hyung Jin KIM, Seong Heon CHO
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Patent number: 10650715Abstract: A short circuit detector includes a first transistor connected between a first portion of a data line and a second portion of the data line and including a gate electrode connected to a first node; a second transistor connected between a first voltage source and the first node and including a gate electrode configured to receive a short-circuit test signal; a third transistor connected between a second node included in the second portion and a third node and including a gate electrode configured to receive the short-circuit test signal; a fourth transistor connected between a second voltage source and the first node and including a gate electrode connected to the third node; and a fifth transistor connected to the first node and a third voltage source and including a gate electrode connected to the third node in common with the gate electrode of the third transistor.Type: GrantFiled: January 3, 2019Date of Patent: May 12, 2020Assignee: Samsung Display Co., Ltd.Inventor: Seong Heon Cho
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Publication number: 20190213936Abstract: A short circuit detector includes a first transistor connected between a first portion of a data line and a second portion of the data line and including a gate electrode connected to a first node; a second transistor connected between a first voltage source and the first node and including a gate electrode configured to receive a short-circuit test signal; a third transistor connected between a second node included in the second portion and a third node and including a gate electrode configured to receive the short-circuit test signal; a fourth transistor connected between a second voltage source and the first node and including a gate electrode connected to the third node; and a fifth transistor connected to the first node and a third voltage source and including a gate electrode connected to the third node in common with the gate electrode of the third transistor.Type: ApplicationFiled: January 3, 2019Publication date: July 11, 2019Inventor: Seong Heon CHO
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Publication number: 20170047000Abstract: A display device includes a scan driver to supply a scan signal to scan lines, a data converter to receive a first data corresponding to a first wavelength range and to generate a second data corresponding to a second wavelength range by using the first data, a data driver to generate a data signal to be supplied to data lines by using the first data or the second data, and pixels in areas defined by the scan and data lines to emit light in accordance with the data signal.Type: ApplicationFiled: May 17, 2016Publication date: February 16, 2017Inventors: Hong Soo KIM, Se Hyuk PARK, Seong Heon CHO