Patents by Inventor Zhi Feng Zhan
Zhi Feng Zhan 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: 9240423Abstract: A display device includes: an insulating substrate comprising a first region and a second region; a thin-film transistor (TFT) formed on the first region comprising a gate electrode, a source electrode, and a drain electrode; and a storage capacitor formed on the second region, wherein the storage capacitor comprises a first electrode, a second electrode and a first interlayer insulating film, where the first and second electrodes face each other and are made of a transparent conductive material, wherein the interlayer insulating film is interposed between the first electrode and the second electrode, and wherein the first electrode is formed on the entire surface of the first substrate as one body and receives a common voltage, and the second electrode is electrically connected to the drain electrode.Type: GrantFiled: October 27, 2011Date of Patent: January 19, 2016Assignee: Samsung Display Co., Ltd.Inventors: Zhi Feng Zhan, Seung-Gyu Tae, Deok-Hoi Kim
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Patent number: 9196737Abstract: Provided is a thin film semiconductor device such as an organic light-emitting display which includes a thin film transistor (TFT) having a lightly doped region. The thin film semiconductor includes a substrate, a first active pattern, a first lower conductive pattern, and a first upper conductive pattern. The first active pattern is disposed on the substrate and includes a channel region, a lightly doped region, and a heavily doped region. The first lower conductive pattern is disposed on the first active pattern and covers the channel region. The first upper conductive pattern is disposed on the first lower conductive pattern and covers the channel region and the lightly doped region.Type: GrantFiled: July 17, 2013Date of Patent: November 24, 2015Assignee: Samsung Display Co., Ltd.Inventor: Zhi-Feng Zhan
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Patent number: 9012273Abstract: A flat panel display device having increased capacitance and a method of manufacturing the flat panel display device are provided. A flat panel display device includes: a plurality of pixel areas, each located at a crossing region of a gate line, a data line, and a common voltage line; a thin film transistor (TFT) located at a region where the gate line and the data line cross each other, the TFT including a gate electrode, a source electrode, and a drain electrode; and a storage capacitor located at a region where the common voltage line and the drain electrode cross each other, the storage capacitor including first, second, and a third storage electrodes.Type: GrantFiled: January 24, 2014Date of Patent: April 21, 2015Assignee: Samsung Display Co., Ltd.Inventors: Zhi-Feng Zhan, Seung-Gyu Tae, Deok-Hoi Kim
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Publication number: 20140225075Abstract: Provided is a thin film semiconductor device such as an organic light-emitting display which includes a thin film transistor (TFT) having a lightly doped region. The thin film semiconductor includes a substrate, a first active pattern, a first lower conductive pattern, and a first upper conductive pattern. The first active pattern is disposed on the substrate and includes a channel region, a lightly doped region, and a heavily doped region. The first lower conductive pattern is disposed on the first active pattern and covers the channel region. The first upper conductive pattern is disposed on the first lower conductive pattern and covers the channel region and the lightly doped region.Type: ApplicationFiled: July 17, 2013Publication date: August 14, 2014Inventor: Zhi-Feng Zhan
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Publication number: 20140141574Abstract: A flat panel display device having increased capacitance and a method of manufacturing the flat panel display device are provided. A flat panel display device includes: a plurality of pixel areas, each located at a crossing region of a gate line, a data line, and a common voltage line; a thin film transistor (TFT) located at a region where the gate line and the data line cross each other, the TFT including a gate electrode, a source electrode, and a drain electrode; and a storage capacitor located at a region where the common voltage line and the drain electrode cross each other, the storage capacitor including first, second, and a third storage electrodes.Type: ApplicationFiled: January 24, 2014Publication date: May 22, 2014Applicant: Samsung Display Co., Ltd.Inventors: Zhi-Feng Zhan, Seung-Gyu Tae, Deok-Hoi Kim
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Patent number: 8723770Abstract: A flat panel display apparatus includes a first pixel region on a substrate and defined by an intersection between a first gate line and a data line. The first pixel region includes a first transistor and a first capacitor and is covered by a first pixel electrode. The apparatus includes a second pixel region adjacent to the first pixel region and defined by an intersection between a second gate line and the data line. The second pixel region is covered by a second pixel electrode. The first gate line is positioned between the first pixel electrode and the second pixel electrode. A second capacitor is in the second pixel region, and the second capacitor includes a first transparent conductive layer and a second transparent conductive layer. A transparent shielding portion extends from the second transparent conductive layer of the second capacitor toward the first pixel region to overlap with the first gate line.Type: GrantFiled: August 19, 2011Date of Patent: May 13, 2014Assignee: Samsung Display Co., Ltd.Inventors: Zhi-Feng Zhan, Seung-Gyu Tae, Sung-Hoon Moon, Deok-Hoi Kim
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Patent number: 8723852Abstract: A method of driving a display panel includes sequentially applying a gate signal to a plurality of gate lines of the display panel during each frame period of a plurality of frame periods, applying data voltages to a plurality of data lines of the display panel, and applying a common voltage to the display panel, a polarity of the common voltage being inverted periodically and asynchronously with a frame period of the frame periods.Type: GrantFiled: May 25, 2011Date of Patent: May 13, 2014Assignee: Samsung Display Co., Ltd.Inventors: Zhi-Feng Zhan, Seung-Gyu Tae, Sung-Hoon Moon, Deok-Hoi Kim
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Patent number: 8643013Abstract: A flat panel display device having increased capacitance and a method of manufacturing the flat panel display device are provided. A flat panel display device includes: a plurality of pixel areas, each located at a crossing region of a gate line, a data line, and a common voltage line; a thin film transistor (TFT) located at a region where the gate line and the data line cross each other, the TFT including a gate electrode, a source electrode, and a drain electrode; and a storage capacitor located at a region where the common voltage line and the drain electrode cross each other, the storage capacitor including first, second, and a third storage electrodes.Type: GrantFiled: February 17, 2011Date of Patent: February 4, 2014Assignee: Samsung Display Co., Ltd.Inventors: Zhi-Feng Zhan, Seung-Gyu Tae, Deok-Hoi Kim
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Publication number: 20130335395Abstract: An organic light emitting display includes pixels positioned at intersections of scan lines, emission control lines, control lines, and data lines, wherein gate voltages of driving transistors of the pixels are initialized by a first or second initialization power supply and an initialization power supply generating unit for supplying the first initialization power supply to pixels positioned in odd horizontal lines via a first power supply line and for supplying the second initialization power supply to pixels positioned in even horizontal lines via a second power supply line. The first initialization power supply and the second initialization power supply repeat a high voltage and a low voltage with different phases.Type: ApplicationFiled: November 5, 2012Publication date: December 19, 2013Inventors: Zhi-Feng ZHAN, Eun-Joo CHO, Kun-Won LEE
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Patent number: 8384688Abstract: A touch screen display device includes; a touch screen display panel including; first sensing lines which extend in a first direction, second sensing lines which extend in a second direction, and a plurality of touch sensors located at a plurality of sensing positions, each of which provides touch data or untouch data, a readout unit which reads the touch data or the untouch data and outputs the read data as sensing data corresponding to each of the sensing positions, and a sensing unit which groups the sensing positions into at least one pre-touch areas using the sensing data and which recognizes at least one touch positions using the pre-touch areas, wherein when first and third sensing positions from among first through third sensing positions provide the touch data while the second sensing position provides the untouch data, the sensing unit recognizes the untouch data as the touch data.Type: GrantFiled: December 1, 2009Date of Patent: February 26, 2013Assignee: Samsung Display Co., Ltd.Inventors: Zhi-Feng Zhan, Byung-Ki Jeon, Jong-Woung Park
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Publication number: 20120326151Abstract: A display device includes: an insulating substrate comprising a first region and a second region; a thin-film transistor (TFT) formed on the first region comprising a gate electrode, a source electrode, and a drain electrode; and a storage capacitor formed on the second region, wherein the storage capacitor comprises a first electrode, a second electrode and a first interlayer insulating film, where the first and second electrodes face each other and are made of a transparent conductive material, wherein the interlayer insulating film is interposed between the first electrode and the second electrode, and wherein the first electrode is formed on the entire surface of the first substrate as one body and receives a common voltage, and the second electrode is electrically connected to the drain electrode.Type: ApplicationFiled: October 27, 2011Publication date: December 27, 2012Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.Inventors: Zhi Feng Zhan, Seung-Gyu Tae, Deok-Hoi Kim
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Patent number: 8310469Abstract: A display device includes a light emitting element, a capacitor, a driving transistor, and first to third switching units. The capacitor is connected between a first node and a second node. The driving transistor has an input terminal connected with a first voltage, an output terminal, and a control terminal connected with the second node, and it outputs a driving current to the light emitting element. The first switching unit selects and connects one of a data voltage and a second voltage to the first node. The second switching unit switches a connection between the second voltage and the second node. The third switching unit selects and connects one of the second node and the light emitting element to the output terminal of the driving transistor.Type: GrantFiled: November 30, 2007Date of Patent: November 13, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Kee-Chan Park, Shang-Min Yhee, Doo-Hyung Woo, Zhi Feng Zhan, Seong-Il Park, Seung-Kyu Lee, Yang-Hwa Choi
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Publication number: 20120162050Abstract: A flat panel display apparatus includes a first pixel region on a substrate and defined by an intersection between a first gate line and a data line. The first pixel region includes a first transistor and a first capacitor and is covered by a first pixel electrode. The apparatus includes a second pixel region adjacent to the first pixel region and defined by an intersection between a second gate line and the data line. The second pixel region is covered by a second pixel electrode. The first gate line is positioned between the first pixel electrode and the second pixel electrode. A second capacitor is in the second pixel region, and the second capacitor includes a first transparent conductive layer and a second transparent conductive layer. A transparent shielding portion extends from the second transparent conductive layer of the second capacitor toward the first pixel region to overlap with the first gate line.Type: ApplicationFiled: August 19, 2011Publication date: June 28, 2012Inventors: Zhi-Feng Zhan, Seung-Gyu Tae, Sung-Hoon Moon, Deok-Hoi Kim
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Publication number: 20120105407Abstract: A method of driving a display panel includes sequentially applying a gate signal to a plurality of gate lines of the display panel during each frame period of a plurality of frame periods, applying data voltages to a plurality of data lines of the display panel, and applying a common voltage to the display panel, a polarity of the common voltage being inverted periodically and asynchronously with a frame period of the frame periods.Type: ApplicationFiled: May 25, 2011Publication date: May 3, 2012Inventors: Zhi-Feng Zhan, Seung-Gyu Tae, Sung-Hoon Moon, Deok-Hoi Kim
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Publication number: 20110297941Abstract: A flat panel display device having increased capacitance and a method of manufacturing the flat panel display device are provided. A flat panel display device includes: a plurality of pixel areas, each located at a crossing region of a gate line, a data line, and a common voltage line; a thin film transistor (TFT) located at a region where the gate line and the data line cross each other, the TFT including a gate electrode, a source electrode, and a drain electrode; and a storage capacitor located at a region where the common voltage line and the drain electrode cross each other, the storage capacitor including first, second, and a third storage electrodes.Type: ApplicationFiled: February 17, 2011Publication date: December 8, 2011Inventors: Zhi-Feng Zhan, Seung-Gyu Tae, Deok-Hoi Kim
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Publication number: 20110193798Abstract: A touch sensing apparatus includes: a sense unit connected to a sense scan line and a sense line; a location detection unit that detects a location of a touch from a sense signal transmitted from the sense unit through the sense line; and a determination and trigger unit that determines whether a touch is sensed from the sense signal, generates a trigger signal that instructs whether or not to operate the location detection unit, and transmits the trigger signal to the location detection unit. The determination and trigger unit includes a logic operation circuit that generates a trigger signal for operation of the location detection unit when the sense signal implies that a touch is sensed while a sense driving signal is applied to at least one of a plurality of sense scan lines. The location detection unit is operated at a minimum to minimize power consumption.Type: ApplicationFiled: November 15, 2010Publication date: August 11, 2011Applicant: Samsung Mobile Display Co., Ltd.Inventors: Zhi Feng Zhan, Jong Woong Park, Hee-Chul Hwang, Gaun-Young Jeong, Byung-Ki Chun
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Publication number: 20100253640Abstract: A touch screen display device includes; a touch screen display panel including; first sensing lines which extend in a first direction, second sensing lines which extend in a second direction , and a plurality of touch sensors located at a plurality of sensing positions, each of which provides touch data or untouch data, a readout unit which reads the touch data or the untouch data and outputs the read data as sensing data corresponding to each of the sensing positions, and a sensing unit which groups the sensing positions into at least one pre-touch areas using the sensing data and which recognizes at least one touch positions using the pre-touch areas, wherein when first and third sensing positions from among first through third sensing positions provide the touch data while the second sensing position provides the untouch data, the sensing unit recognizes the untouch data as the touch data.Type: ApplicationFiled: December 1, 2009Publication date: October 7, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Zhi-Feng ZHAN, Byung-Ki JEON, Jong-Woung PARK
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Publication number: 20080297468Abstract: A liquid crystal display (LCD) apparatus includes a first substrate, a second substrate, a liquid crystal layer and a backlight assembly. The first substrate includes a display part and a sensor part. The sensor part is disposed in a peripheral area of the display part and senses external light. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The backlight assembly is disposed adjacent to the second substrate to expose the first substrate and to provide light. A light detecting function of the sensor part may be increased, so that the backlight may be used effectively and the power consumption of the display apparatus may be reduced.Type: ApplicationFiled: June 3, 2008Publication date: December 4, 2008Inventors: Kee-Chan PARK, Jun-Ho SONG, Shang-Min YHEE, Doo-Hyung WOO, Zhi-Feng ZHAN, Seong-Il PARK, Seung-Kyu LEE, Yang-Hwa CHOI
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Publication number: 20080158205Abstract: A display device includes a light emitting element, a capacitor, a driving transistor, and first to third switching units. The capacitor is connected between a first node and a second node. The driving transistor has an input terminal connected with a first voltage, an output terminal, and a control terminal connected with the second node, and it outputs a driving current to the light emitting element. The first switching unit selects and connects one of a data voltage and a second voltage to the first node. The second switching unit switches a connection between the second voltage and the second node. The third switching unit selects and connects one of the second node and the light emitting element to the output terminal of the driving transistor.Type: ApplicationFiled: November 30, 2007Publication date: July 3, 2008Inventors: Kee-Chan PARK, Shang-Min YHEE, Doo-Hyung WOO, Zhi Feng ZHAN, Seong-Il PARK, Seung-Kyu LEE, Yang-Hwa CHOI
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Publication number: 20070268230Abstract: Disclosed is a level shifter having an amplifier amplifying a second supply voltage and generating an input voltage higher than the predetermined signal, a input buffer selectively transferring an input signal based on the input voltage of the amplifier and an output transistor providing a first supply voltage to an output terminal based on the input signal of the input buffer. When the transistor of the amplifier is turned on, the voltage difference of between gate and source of the input buffer is increased according to the increase of the input voltage, so that it is possible to operate with high speed. Moreover, when the transistor of the amplifier is turned off, the voltage difference of between gate and source becomes negative so that power consumption may reduce because there is no leakage current.Type: ApplicationFiled: May 9, 2007Publication date: November 22, 2007Inventors: Kee-Chan Park, Shang-Min Yhee, Doo-Hyung Woo, Zhi Feng Zhan, Seong-Il Park