Patents by Inventor Gi-Chang Lee
Gi-Chang Lee 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: 20160358938Abstract: A display device having a display area and a non-display area includes a substrate, a pixel at the display area, a signal line on the substrate and electrically connected to the pixel, and a static electricity prevention capacitor at the non-display area and including a lower pattern having a first region and a second region that have different electrical conductivities from each other, an insulating layer on the lower pattern, and an upper pattern including a portion of the signal line and overlapping the first region of the lower pattern in a plan view.Type: ApplicationFiled: January 8, 2016Publication date: December 8, 2016Inventors: Gi Chang Lee, In Soo Wang, Yong Soo Lee
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Publication number: 20160253028Abstract: A touch sensing apparatus that includes a touch panel including first electrodes extending in a first direction and arranged along a second direction, second electrodes extending in the second direction and arranged along the first direction, a signal output unit configured to supply touch driving signals to the first electrodes and configured to receive touch sensing signals generated by the touch driving signals from the first electrodes, and a touch controller configured to calculate a touch position with information from at least one of the first electrodes receiving the touch sensing signals and the first electrodes supplying the touch driving signals corresponding to the touch sensing signals. The second electrodes are connected to corresponding first electrodes and the second electrodes are configured to transfer the touch sensing signals to the corresponding first electrodes.Type: ApplicationFiled: September 15, 2015Publication date: September 1, 2016Inventors: Gi Chang LEE, In Soo WANG, Yong Soo LEE
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Patent number: 9430966Abstract: A method of driving an organic light emitting display device includes: dividing one frame into one blank frame and sub-frames; determining whether a data signal to be applied to a pixel circuit of the organic light emitting display device is a data signal of a high gray-level region or a data signal of a low gray-level region based on a predetermined reference gray-level; applying the data signal to the pixel circuit in all of the sub-frames when the data signal is the data signal of the high gray-level region; and applying a first setting data signal corresponding to a gray-level higher than the reference gray-level to the pixel circuit in some of the sub-frames, and applying a second setting data signal corresponding to a zeroth gray-level to the pixel circuit in other sub-frames among the sub-frames when the data signal is the data signal of the low gray-level region.Type: GrantFiled: March 10, 2014Date of Patent: August 30, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Gi-Chang Lee, Won-Jun Lee, Ji-Yeon Yoon
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Publication number: 20160246433Abstract: A touch display device according to an exemplary embodiment of the present inventive concept includes: a plurality of pixel circuits; a plurality of first signal lines respectively connected to the plurality of pixel circuits and extending in a first direction; and a plurality of second signal lines respectively connected to the plurality of pixel circuits and extending in a second direction, wherein at least one signal line among the plurality of first signal lines and the plurality of second signal lines function as a first sensing electrode and a second sensing electrode in the touch mode, respectively.Type: ApplicationFiled: September 10, 2015Publication date: August 25, 2016Inventors: Gi Chang LEE, In Soo WANG, Hyun Woo CHO
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Publication number: 20160225828Abstract: An organic light emitting diode display includes a substrate, a transistor on the substrate, a reflecting electrode connected to the transistor, a color filter on the reflecting electrode, a first electrode on the color filter and electrically connected to the reflecting electrode, a pixel definition layer on the color filter and having an opening exposing the first electrode, a white emission layer in the opening and a second electrode on the white emission layer.Type: ApplicationFiled: January 28, 2016Publication date: August 4, 2016Inventors: Gi Chang Lee, In Soo Wang, Yong Soo Lee
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Publication number: 20160155408Abstract: A display device having an electrostatic discharge protection unit disposed between a display unit and a pad unit. The electrostatic discharge protection unit comprises a first signal line configured to deliver data and a control signal from a pad unit to the display unit, a second signal line, a plurality of first electrostatic discharge protection patterns which are electrically connected to the first signal line; and a plurality of second electrostatic discharge protection patterns which are electrically connected to the second signal line. Respective ones of the first electrostatic discharge protection patterns and the second electrostatic discharge protection patterns together form a plurality of electrostatic discharge protection pattern pairs, and the first and second electrostatic discharge protection patterns in each of the electrostatic discharge protection pattern pairs are separated from each other by differing distances.Type: ApplicationFiled: October 6, 2015Publication date: June 2, 2016Inventors: Gi Chang LEE, In Soo WANG, Yong Soo LEE
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Publication number: 20160055779Abstract: A display device having a display area including a plurality of pixels and a non-quadrilateral shape, a first gate line in parallel with a first side of a virtual quadrilateral inscribed in the display area, a second gate line in parallel with a second side perpendicular to the first side of the virtual quadrilateral, a first data line in parallel with the first gate line; and a second data line in parallel with the second gate line.Type: ApplicationFiled: January 19, 2015Publication date: February 25, 2016Inventors: Gi Chang LEE, In Soo Wang
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Publication number: 20160012788Abstract: A method of driving a display panel includes: generating a data signal having a difference between a number of positive frames and a number of negative frames; and displaying an image according to the data signal.Type: ApplicationFiled: February 10, 2015Publication date: January 14, 2016Inventors: Gi-Chang Lee, In-Soo Wang
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Publication number: 20150348463Abstract: A pixel circuit and organic light-emitting diode (OLED) display including the same are disclosed. In one aspect, a pixel circuit comprises an OLED electrically connected between a first node and a low power supply voltage, a driver electrically connected to the OLED at the first node and configured to drive the OLED with a voltage corresponding to a data signal based at least in part on a scan signal, a read-out unit configured to measure an anode current of the OLED based at least in part on a read control signal, and a compensation unit electrically connected to the OLED at the first node and configured to provide the OLED with a compensation current corresponding to a compensation data signal based at least in part on the measured anode current and a compensation control signal.Type: ApplicationFiled: October 22, 2014Publication date: December 3, 2015Inventor: Gi-Chang Lee
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Publication number: 20150248862Abstract: Provided is a display device including: a plurality of pixels, each of the pixels including: a first switching transistor including a gate electrode coupled to a scan line, a first electrode coupled to a data line, and a second electrode coupled to a first node; a first driving voltage transistor including a gate electrode coupled to the first node, and a first electrode coupled to a first driving voltage; a write transistor including a gate electrode coupled to a write line, a first electrode coupled to a second electrode of the first driving voltage transistor, and a second electrode coupled to a second node; a second switching transistor including a gate electrode coupled to the second node, a first electrode coupled to a first power voltage, and a second electrode coupled to an organic light emitting diode; and a first capacitor coupled between the first node and the second node.Type: ApplicationFiled: July 23, 2014Publication date: September 3, 2015Inventor: Gi Chang Lee
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Patent number: 9053677Abstract: Provided is a display panel including: a display area; and a gate driver to receive a first clock signal, a first clock bar signal, a second clock signal and a second clock bar signal, the gate driver comprising a first stage and a second stage to respectively apply a first gate voltage and a second gate voltage to the display area, wherein the first clock signal and the first clock bar signal have opposite phases to each other, the second clock signal and the second clock bar signal have opposite phases to each other, the second clock bar signal has phases later than the first clock bar signal, the first stage discharges the first gate voltage based on the first clock signal and a first transfer signal, and the second stage outputs the first transfer signal based on the second clock bar signal.Type: GrantFiled: December 7, 2011Date of Patent: June 9, 2015Assignee: Samsung Display Co., Ltd.Inventors: Soo-Young Park, In-Soo Wang, Gi-Chang Lee, Tae-Hyun Kim, Jeong-Yun Han
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Publication number: 20150070407Abstract: A method of driving an organic light emitting display device includes: dividing one frame into one blank frame and sub-frames; determining whether a data signal to be applied to a pixel circuit of the organic light emitting display device is a data signal of a high gray-level region or a data signal of a low gray-level region based on a predetermined reference gray-level; applying the data signal to the pixel circuit in all of the sub-frames when the data signal is the data signal of the high gray-level region; and applying a first setting data signal corresponding to a gray-level higher than the reference gray-level to the pixel circuit in some of the sub-frames, and applying a second setting data signal corresponding to a zeroth gray-level to the pixel circuit in other sub-frames among the sub-frames when the data signal is the data signal of the low gray-level region.Type: ApplicationFiled: March 10, 2014Publication date: March 12, 2015Applicant: Samsung Display Co., LTD.Inventors: Gi-Chang LEE, Won-Jun LEE, Ji-Yeon YOON
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Publication number: 20140347344Abstract: A display device includes gate lines which transmits a plurality of gate signals, data lines which transmits a plurality of data signals, and pixels connected to the gate lines and the data lines; a signal controller which generates image data, a data control signal and a gate control signal based on an input video signal and an input control signal; a timing setter including connection pads connected to a voltage of a first level or a voltage of a second level; and a gate driver which generates timing information based on tuning signals transmitted from the timing setter through the connection pads and generates gate signals using the gate control signal and the timing information, where the gate control signal includes a scan start reference signal, which instructs a scan start, and a clock control reference signal, which controls each pulse width of the gate signal.Type: ApplicationFiled: November 18, 2013Publication date: November 27, 2014Applicant: Samsung Display Co., Ltd.Inventors: Won-Jun LEE, In-Soo WANG, Gi-Chang LEE
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Publication number: 20130009919Abstract: Provided is a display panel including: a display area; and a gate driver to receive a first clock signal, a first clock bar signal, a second clock signal and a second clock bar signal, the gate driver comprising a first stage and a second stage to respectively apply a first gate voltage and a second gate voltage to the display area, wherein the first clock signal and the first clock bar signal have opposite phases to each other, the second clock signal and the second clock bar signal have opposite phases to each other, the second clock bar signal has phases later than the first clock bar signal, the first stage discharges the first gate voltage based on the first clock signal and a first transfer signal, and the second stage outputs the first transfer signal based on the second clock bar signal.Type: ApplicationFiled: December 7, 2011Publication date: January 10, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Soo-Young PARK, In-Soo WANG, Gi-Chang LEE, Tae-Hyun KIM, Jeong-Yun HAN
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Patent number: 8289260Abstract: A driving device for a display device includes a gray voltage generator generating a plurality of gray voltages, a voltage selector selecting an output voltage from the plurality of gray voltages, a voltage level converter converting a level of the output voltage selected by the voltage selector and applying the output voltage with a converted level to data lines, a first switching unit connecting the voltage level converter to the voltage selector and the data lines, and a second switching unit directly connecting the voltage selector and the data lines. Operating times of the first and second switching units are different. Accordingly, when a data voltage is charged in or discharged from a data line, since a separate discharging transistor or a separate discharging amplifier is not used, power consumption and an area of a data driver are reduced.Type: GrantFiled: January 16, 2007Date of Patent: October 16, 2012Assignees: Samsung Electronics Co., Ltd., Industry-University Cooperation Foundation, Hanyang UniversityInventors: Cheol-Min Kim, Il-Gon Kim, Tae-Hyeong Park, Gi-Chang Lee, Oh-Kyong Kwon
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Patent number: 8279147Abstract: A display device includes a plurality of pixels connected with a plurality of gate lines and a plurality of data lines, a data driving part applying a data signal to the plurality of data lines, a gate driving part applying a gate signal to the plurality of gate lines, and a plurality of protection circuits connected with the plurality of data lines, wherein each of the plurality of protection circuits comprises a first transistor including a control terminal connected with a first signal line, an input terminal connected with a data line, and an output terminal connected with a second signal line, a second transistor including a control terminal connected with the second signal line, an input terminal connected with the second signal line, and an output terminal connected with the first signal line, and a storage capacitor is connected between the control terminal of the first transistor and the output terminal of the first transistor.Type: GrantFiled: October 1, 2007Date of Patent: October 2, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Gi-Chang Lee, Il-Gon Kim, Won-Chang Chung, Cheol-Min Kim
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Patent number: 8164559Abstract: Embodiments of the present disclosure provide a display device having a display panel in which gate lines are formed and a gate driving circuit which is connected to the gate lines and outputs gate signals. The gate driving circuit includes a first stage, a second stage which is positioned in rear of the first stage, and a third stage which is positioned in rear of the second stage. The second stage includes a driving controller, a driver, a sustain part, and a controller.Type: GrantFiled: July 31, 2008Date of Patent: April 24, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Gi-chang Lee, Yong-keun Lee, Tae-ho Jeong
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Patent number: 8159445Abstract: A driving device for a display device includes a gray voltage generator generating a plurality of gray voltages, a voltage selector selecting an output voltage from the plurality of gray voltages, a voltage level converter converting a level of the output voltage selected by the voltage selector and applying the output voltage with a converted level to data lines, a first switching unit connecting the voltage level converter to the voltage selector and the data lines, and a second switching unit directly connecting the voltage selector and the data lines. Operating times of the first and second switching units are different. Accordingly, when a data voltage is charged in or discharged from a data line, since a separate discharging transistor or a separate discharging amplifier is not used, power consumption and an area of a data driver are reduced.Type: GrantFiled: January 16, 2007Date of Patent: April 17, 2012Assignees: Samsung Electronics Co., Ltd., Industry-University Cooperation Foundation, Hanyang UniversityInventors: Cheol-Min Kim, Il-Gon Kim, Tae-Hyeong Park, Gi-Chang Lee, Oh-Kyong Kwon
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Publication number: 20120062537Abstract: A liquid crystal display includes a first substrate and a second substrate facing each other, a liquid crystal layer interposed between the first and second substrates and including liquid crystal molecules, a first gate line and a second gate line formed on the first substrate and transferring gate signals, a first voltage line formed on the first substrate and transferring voltage of predetermined intensity, a data line formed on the first substrate and transferring a data signal, a first switching element connected to the first gate line and the first voltage line, a second switching element connected to the second gate line and the data line, and a pixel electrode connected to the first switching element and the second switching element. A gate-on signal is applied to the first gate line earlier than the second gate line.Type: ApplicationFiled: August 23, 2011Publication date: March 15, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Youn-Hak JEONG, Keun-Chan OH, Hee-Hwan LEE, Jae-Jin LYU, Gi-Chang LEE
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Patent number: 7888150Abstract: The present invention provides a display comprising a panel having a display region for displaying an image and a peripheral region defined therein, a plurality of thin film transistors (TFTs) formed in the display region, p-type and n-type TFTs formed in the peripheral region, and at least one photo diode formed in a horizontal structure in the display or peripheral region; and a method of manufacturing the display. According to the present invention, n-type and p-type TFTs and a photo diode can be together formed without an additional process when forming the TFTs using a polycrystalline silicon thin film, and various peripheral circuits can be configured using such elements.Type: GrantFiled: November 14, 2007Date of Patent: February 15, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Cheol Min Kim, Gi Chang Lee, Yang Hwa Choi