Patents by Inventor Kang Nam Kim
Kang Nam Kim 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: 20240135744Abstract: A display device comprises a display panel comprising an image display area and a non-display area, display pixels comprising light-emitting elements in the image display area and pixel driving units connected to the light-emitting elements, light-sensing pixels comprising photo-detecting units in a fingerprint sensing area in the image display area, and sense driving units connected to the photo-detecting units, a light-sensing reset driver configured to supply reset signals to the sense driving units of the light-sensing pixels for at least each horizontal line among the light-sensing pixels in response to a line select signal from a display driving circuit; and a fingerprint scan driver configured to sequentially supply a fingerprint scan signal to the sense driving units of the light-sensing pixels in response to a fingerprint scan control signal from the display driving circuit.Type: ApplicationFiled: September 27, 2023Publication date: April 25, 2024Inventors: Hyun Dae LEE, Il Nam KIM, Hyoung Wook JANG, Kang Bin JO, Go Eun CHA, Hee Chul HWANG
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Patent number: 11929032Abstract: A display device comprises a display panel which comprises scan lines, sensing lines, pixels electrically connected to each of the scan lines, and photo sensors electrically to each of the scan lines and the sensing lines, a scan driver which outputs scan signals to the scan lines according to a scan control signal, a timing controller which outputs the scan control signal to the scan driver, and a readout circuit which receives light sensing signals of the photo sensors from the sensing lines. The timing controller sets a frame frequency of the scan control signal to a first frame frequency in a first mode in which the display panel displays an image. The timing controller sets the frame frequency of the scan control signal to a second frame frequency in a second mode in which the photo sensors sense a fingerprint.Type: GrantFiled: August 15, 2022Date of Patent: March 12, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Dae Lee, Il Nam Kim, Seung Hyun Moon, Dong Wook Yang, Kang Bin Jo, Go Eun Cha
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Patent number: 11908417Abstract: A gate driving circuit including a controller for providing a first carry signal to a control node, a first pull-up portion for outputting a first clock signal as a first gate signal in accordance with a signal provided to the control node, and a second pull-up portion for outputting a second clock signal with a phase that is different from the first clock signal as a second gate signal in accordance with the signal provided to the control node.Type: GrantFiled: April 25, 2022Date of Patent: February 20, 2024Assignee: Samsung Display Co., Ltd.Inventors: Kang Nam Kim, You Mee Hyun, Beom Jun Kim, Jong Hwan Lee, Sung Hoon Lim, Duc Han Cho
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Publication number: 20230245612Abstract: A scan driver includes a plurality of stages. An nth (n is a natural number) stage among the stages includes: a first and a second input circuit for controlling a voltage of a first node in response to a carry signal of a previous stage and a next stage, respectively; a first output circuit for outputting an nth carry signal corresponding to a carry clock signal in response to the voltage of the first node; a second output circuit for outputting an nth scan and an nth sensing signal corresponding to a scan and a sensing clock signal, respectively, in response to the voltage of the first node; and a sampling circuit for storing the carry signal of the previous stage in response to a first select signal, and for supplying a control voltage to the first node in response to a second select signal and the stored carry signal.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Inventors: Kang Nam KIM, Sung Hoon LIM, Woo Geun LEE, Kyu Sik CHO, Jae Beom CHOI
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Patent number: 11626060Abstract: A scan driver includes a plurality of stages. An nth (n is a natural number) stage among the stages includes: a first and a second input circuit for controlling a voltage of a first node in response to a carry signal of a previous stage and a next stage, respectively; a first output circuit for outputting an nth carry signal corresponding to a carry clock signal in response to the voltage of the first node; a second output circuit for outputting an nth scan and an nth sensing signal corresponding to a scan and a sensing clock signal, respectively, in response to the voltage of the first node; and a sampling circuit for storing the carry signal of the previous stage in response to a first select signal, and for supplying a control voltage to the first node in response to a second select signal and the stored carry signal.Type: GrantFiled: September 17, 2021Date of Patent: April 11, 2023Assignee: Samsung Display Co., Ltd.Inventors: Kang Nam Kim, Sung Hoon Lim, Woo Geun Lee, Kyu Sik Cho, Jae Beom Choi
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Patent number: 11521570Abstract: A gate driver for a display device includes: a clock signal line to transfer a clock signal; and a plurality of stages to sequentially output a gate signal based upon the clock signal in response to a carry signal. The plurality of stages include a plurality of thin film transistors, and at least one of the plurality of thin film transistors includes a thin film transistor including an oxide semiconductor. The at least one thin film transistor includes a first gate electrode and a second gate electrode disposed in different layers, the oxide semiconductor is disposed between the first gate electrode and the second gate electrode, and the first gate electrode and the second gate electrode are connected to receive a common voltage signal.Type: GrantFiled: March 4, 2020Date of Patent: December 6, 2022Assignee: Samsung Display Co., Ltd.Inventors: Sung Hoon Lim, Kang Nam Kim, Seok Hwan Bang, Sung Hwan Won, Woo Geun Lee, Kyu Sik Cho, Soo Jung Chae
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Publication number: 20220254310Abstract: A gate driving circuit including a controller for providing a first carry signal to a control node, a first pull-up portion for outputting a first clock signal as a first gate signal in accordance with a signal provided to the control node, and a second pull-up portion for outputting a second clock signal with a phase that is different from the first clock signal as a second gate signal in accordance with the signal provided to the control node.Type: ApplicationFiled: April 25, 2022Publication date: August 11, 2022Inventors: Kang Nam KIM, You Mee HYUN, Beom Jun KIM, Jong Hwan LEE, Sung Hoon LIM, Duc Han CHO
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Patent number: 11315495Abstract: A gate driving circuit including a controller for providing a first carry signal to a control node, a first pull-up portion for outputting a first clock signal as a first gate signal in accordance with a signal provided to the control node, and a second pull-up portion for outputting a second clock signal with a phase that is different from the first clock signal as a second gate signal in accordance with the signal provided to the control node.Type: GrantFiled: April 14, 2017Date of Patent: April 26, 2022Assignee: Samsung Display Co., Ltd.Inventors: Kang Nam Kim, You Mee Hyun, Beom Jun Kim, Jong Hwan Lee, Sung Hoon Lim, Duc Han Cho
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Publication number: 20220005402Abstract: A scan driver includes a plurality of stages. An nth (n is a natural number) stage among the stages includes: a first and a second input circuit for controlling a voltage of a first node in response to a carry signal of a previous stage and a next stage, respectively; a first output circuit for outputting an nth carry signal corresponding to a carry clock signal in response to the voltage of the first node; a second output circuit for outputting an nth scan and an nth sensing signal corresponding to a scan and a sensing clock signal, respectively, in response to the voltage of the first node; and a sampling circuit for storing the carry signal of the previous stage in response to a first select signal, and for supplying a control voltage to the first node in response to a second select signal and the stored carry signal.Type: ApplicationFiled: September 17, 2021Publication date: January 6, 2022Inventors: Kang Nam KIM, Sung Hoon LIM, Woo Geun LEE, Kyu Sik CHO, Jae Beom CHOI
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Patent number: 11127339Abstract: A scan driver includes a plurality of stages. An nth (n is a natural number) stage among the stages includes: a first and a second input circuit for controlling a voltage of a first node in response to a carry signal of a previous stage and a next stage, respectively; a first output circuit for outputting an nth carry signal corresponding to a carry clock signal in response to the voltage of the first node; a second output circuit for outputting an nth scan and an nth sensing signal corresponding to a scan and a sensing clock signal, respectively, in response to the voltage of the first node; and a sampling circuit for storing the carry signal of the previous stage in response to a first select signal, and for supplying a control voltage to the first node in response to a second select signal and the stored carry signal.Type: GrantFiled: May 15, 2020Date of Patent: September 21, 2021Assignee: Samsung Display Co., Ltd.Inventors: Kang Nam Kim, Sung Hoon Lim, Woo Geun Lee, Kyu Sik Cho, Jae Beom Choi
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Publication number: 20200394978Abstract: A gate driver for a display device includes: a clock signal line to transfer a clock signal; and a plurality of stages to sequentially output a gate signal based upon the clock signal in response to a carry signal. The plurality of stages include a plurality of thin film transistors, and at least one of the plurality of thin film transistors includes a thin film transistor including an oxide semiconductor. The at least one thin film transistor includes a first gate electrode and a second gate electrode disposed in different layers, the oxide semiconductor is disposed between the first gate electrode and the second gate electrode, and the first gate electrode and the second gate electrode are connected to receive a common voltage signal.Type: ApplicationFiled: March 4, 2020Publication date: December 17, 2020Inventors: Sung Hoon LIM, Kang Nam KIM, Seok Hwan BANG, Sung Hwan WON, Woo Geun LEE, Kyu Sik CHO, Soo Jung CHAE
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Publication number: 20200372851Abstract: A scan driver includes a plurality of stages. An nth (n is a natural number) stage among the stages includes: a first and a second input circuit for controlling a voltage of a first node in response to a carry signal of a previous stage and a next stage, respectively; a first output circuit for outputting an nth carry signal corresponding to a carry clock signal in response to the voltage of the first node; a second output circuit for outputting an nth scan and an nth sensing signal corresponding to a scan and a sensing clock signal, respectively, in response to the voltage of the first node; and a sampling circuit for storing the carry signal of the previous stage in response to a first select signal, and for supplying a control voltage to the first node in response to a second select signal and the stored carry signal.Type: ApplicationFiled: May 15, 2020Publication date: November 26, 2020Inventors: Kang Nam KIM, Sung Hoon LIM, Woo Geun LEE, Kyu Sik CHO, Jae Beom CHOI
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Patent number: 10761650Abstract: A touch sensing device determines a contact location of a pen by using a first electrode signal generated from a first electrode of the pen, determines additional information related to the pen by using a second electrode signal generated from a second electrode of the pen, and can determine tilt information of the pen and/or rotation information of the pen by using a profile of the first electrode signal and a profile of the second electrode signal.Type: GrantFiled: August 3, 2017Date of Patent: September 1, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Soo Park, Byung-Hoon Kang, Chang-Byung Park, Kang-Nam Kim
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Patent number: 10649553Abstract: An input device and method for control based on input device tilt is provided. The input device includes a conductive tip formed at one end of the input device, a resonant circuit unit configured to generate a response signal corresponding to a signal entering through the conductive tip and output the response signal through the conductive tip, and a connection part formed between the conductive tip and a body of the input device to enclose a periphery of the conductive tip so as to have a part of the conductive tip exposed from one end of the input device. The connection part includes a metal member having a larger cross-section area than a cross-section area of the conductive tip and which affects signal intensity in response to input device tilt as detected by a touch screen of an electronic device.Type: GrantFiled: June 20, 2019Date of Patent: May 12, 2020Assignee: Samsung Electronics Co., Ltd.Inventors: Kang-nam Kim, Sung-soo Park, Byung-hoon Kang, Kang-min Lee
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Patent number: 10488951Abstract: A stylus pen and a touch panel are provided. The stylus pen includes: a conductive tip configured to receive an electric field transmission signal from at least one electrode of the touch panel; a circuit portion configured to generate an electric field receiving signal corresponding to the received electric field transmission signal; a variable capacitor between the conductive tip and the circuit portion, and configured to vary the electric field receiving signal depending on a writing pressure applied to the conductive tip; and a conductive body outside the variable capacitor and electrically connecting the conductive tip and the circuit portion.Type: GrantFiled: October 29, 2015Date of Patent: November 26, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kang-nam Kim, Se-hyun Han, Byung-jik Kim
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Patent number: 10466862Abstract: An input device and an electronic apparatus are provided. The input device includes a case, a user manipulator disposed on the case, and a circuit configured to generate different signals according to a position change of the user manipulator. The user manipulator includes a movable member configured to be movable on the case, a first electrode fixed within the case, and a second electrode disposed on the movable member so as to be opposite to the first electrode in which an opposed area of the second electrode opposing the first electrode is varied according to the movement of the movable member.Type: GrantFiled: May 4, 2016Date of Patent: November 5, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Kang-nam Kim, Byung-hoon Kang
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Publication number: 20190302910Abstract: An input device and method for control based on input device tilt is provided. The input device includes a conductive tip formed at one end of the input device, a resonant circuit unit configured to generate a response signal corresponding to a signal entering through the conductive tip and output the response signal through the conductive tip, and a connection part formed between the conductive tip and a body of the input device to enclose a periphery of the conductive tip so as to have a part of the conductive tip exposed from one end of the input device. The connection part includes a metal member having a larger cross-section area than a cross-section area of the conductive tip and which affects signal intensity in response to input device tilt as detected by a touch screen of an electronic device.Type: ApplicationFiled: June 20, 2019Publication date: October 3, 2019Inventors: Kang-nam KIM, Sung-soo PARK, Byung-hoon KANG, Kang-min LEE
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Patent number: 10423246Abstract: An input device and an electronic apparatus for receiving a signal from the input device are provided. The input device includes a conductive tip configured to receive an electric field transmission signal generated from at least one electrode of the electronic apparatus, a circuit configured to generate an electric field response signal corresponding to the electric field transmission signal, a variable capacitor disposed between the conductive tip and the circuit and configured to vary the electric field response signal according to writing pressure applied to the conductive tip, and a case in which the circuit and the variable capacitor are disposed. The variable capacitor includes a first electrode and a second electrode coupled to the circuit, a conductive variable electrode disposed to face the first electrode, and a dielectric disposed between the first electrode and the conductive variable electrode. The first electrode and the second electrode are fixed to the case.Type: GrantFiled: June 21, 2016Date of Patent: September 24, 2019Assignee: Samsung Electronics Co., Ltd.Inventor: Kang-nam Kim
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Patent number: 10372239Abstract: An input device and method for control based on input device tilt is provided. The input device includes a conductive tip formed at one end of the input device, a resonant circuit unit configured to generate a response signal corresponding to a signal entering through the conductive tip and output the response signal through the conductive tip, and a connection part formed between the conductive tip and a body of the input device to enclose a periphery of the conductive tip so as to have a part of the conductive tip exposed from one end of the input device. The connection part includes a metal member having a larger cross-section area than a cross-section area of the conductive tip and which affects signal intensity in response to input device tilt as detected by a touch screen of an electronic device.Type: GrantFiled: June 22, 2016Date of Patent: August 6, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Kang-nam Kim, Sung-soo Park, Byung-hoon Kang, Kang-min Lee
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Patent number: 10359869Abstract: A stylus pen, an apparatus for receiving a signal from the stylus pen, and a control method are provided. The stylus pen includes a conductive tip disposed at a first end of the stylus pen. The stylus pen also includes a conductive tail disposed at a second end of the stylus pen. The stylus pen further includes a resonant circuit unit electrically connected to the conductive tip and the conductive tail. The resonant circuit is configured to generate a first response signal having a first resonant frequency corresponding to a signal entering the conductive tip from the electronic apparatus, to output the first response signal through the conductive tip, to generate a second response signal having a second resonant frequency corresponding to a signal entering the conductive tail from the electronic apparatus, and to output the second response signal through the conductive tail.Type: GrantFiled: March 28, 2017Date of Patent: July 23, 2019Assignee: Samsung Electronics Co., LtdInventors: Kang-nam Kim, Byung-hoon Kang