Patents Examined by Jonathan Blancha
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Patent number: 10192486Abstract: A pixel circuit, a driving method and a display device are provided. The pixel circuit includes a threshold compensation unit, configured to pull voltage of first node and voltage of first level terminal uniform, pull voltage of third node and voltage of second node uniform, and make the voltage of the first node and the voltage of the third node have an equipotential change; a driving unit, configured to output driving current; a data writing unit, configured to pull the voltage of the third node and the voltage of a data signal terminal uniform; a resetting unit, configured to pull a voltage of fourth node and a voltage of a third level terminal uniform; an EL light-emitting unit, configured to display gray scales through driving current; and a feedback unit, configured to make the voltage of the third node and the voltage of the fourth node have an equipotential change.Type: GrantFiled: July 28, 2016Date of Patent: January 29, 2019Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Xiaoxiang He, Xiaojing Qi
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Patent number: 10185447Abstract: A touch sensing device includes a base panel, a plurality of receiving channels, at least one noise listening channel and at least one processing unit. The receiving channels are disposed on the base board in parallel. The at least one noise listening channel and the receiving channels are disposed on the base board in parallel. The processing unit is configured to generate touching sensing data according to a sensing signal outputted by a corresponding receiving channel of the plurality of receiving channels and a noise listening signal outputted by the at least one noise listening channel.Type: GrantFiled: October 6, 2015Date of Patent: January 22, 2019Assignee: AU OPTRONICS CORPORATIONInventors: Feng-Sheng Lin, Chun-Chi Lai, Tsang-Hong Wang
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Patent number: 10176771Abstract: A display panel includes a pixel array, a gate driving circuit, and a data driving circuit. The pixel array includes a plurality of pixel blocks, a plurality of gate lines and a plurality of data lines. The gate driving circuit is electrically coupled to the gate lines for driving sub-pixels of the pixel array. The data driving circuit is electrically coupled to the data lines for providing data signals to the sub-pixels of the pixel array. The sub-pixels of each pixel block include a plurality of first sub-pixels and a plurality of second sub-pixels. For each pixel block, the first sub-pixels and the second sub-pixels have same quantity. For displaying a specified gray-scale value, a luminance value in each first sub-pixel is greater than a luminance value in each second sub-pixel. The data driving circuit changes a polarity of each sub-pixel of the pixel array by using a polarization sequence.Type: GrantFiled: April 18, 2017Date of Patent: January 8, 2019Assignee: AU OPTRONICS CORPORATIONInventors: Kun-Cheng Tien, Shu-En Li, Chien-Huang Liao, Jia-Long Wu
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Patent number: 10146381Abstract: A touch sensing structure including a transparent substrate and at least one touch sensing unit disposed on the transparent substrate is provided. Each touch sensing unit includes a first patterned electrode, a second patterned electrode, a conductive bridge and a patterned light-shielding layer. The second patterned electrode is isolated from the first patterned electrode and is separated into a first portion and a second portion by the first patterned electrode. A conductive bridge electrically connects the first portion and the second portion and is spatially separated from the first patterned electrode. The patterned light-shielding layer is disposed between the conductive bridge and the inner surface and at least partly overlaps the conductive bridge along a direction normal to the transparent substrate.Type: GrantFiled: May 6, 2016Date of Patent: December 4, 2018Assignee: INNOLUX CORPORATIONInventors: Yu-Chien Lin, Chuan-Chi Chien
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Patent number: 10140900Abstract: A data driver includes a gamma unit, a digital-to-analog converter, and an output buffer. The gamma unit receives at least one reference voltage, and generates a first gamma reference voltage corresponding to a first sub-pixel and a second gamma reference voltage corresponding to a second sub-pixel using the received at least one reference voltage. The digital-to-analog converter receives the first and second gamma reference voltages from the gamma unit, and generates a first gamma data value corresponding to the first sub-pixel using the first gamma reference voltage and a second gamma data value corresponding to the second sub-pixel using the second gamma reference voltage. The output buffer outputs a first frame including the first gamma data value and a second frame including the second gamma data value. The output buffer outputs the first and second frames in a repeated manner for every predetermined number of frames.Type: GrantFiled: February 8, 2016Date of Patent: November 27, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Won Tae Kim, Soo Yeon Kim, Young Il Ban, Sun Kyu Son
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Patent number: 10139969Abstract: A touch panel includes: a substrate; touch electrodes disposed on the substrate, the touch electrodes being configured to sense a touch input; and touch signal lines each connected to one of the touch electrodes, the touch signal lines each including a fanout portion and a pad portion, the pad portion being electrically connected to a touch controller. Each of the fanout portion and the pad portion includes a first conductor, a second conductor disposed on the first conductor, and a third conductor disposed on the second conductor, and a passivation layer disposed on the third conductor.Type: GrantFiled: January 12, 2016Date of Patent: November 27, 2018Assignee: Samsung Display Co., Ltd.Inventors: Ki Nyeng Kang, Jong Hyun Choi, Jeong-Hwan Kim
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Patent number: 10140923Abstract: The present application provides a pixel driving system of AMOLED and a pixel driving method of AMOLED. The pixel driving system of AMOLED includes a pixel driving circuit of a 4T1C architecture, and an initialization voltage supply module electrically connected to the pixel driving circuit, by providing a high level of an initialization signal from the initialization voltage supply module at the light emission stage in the pixel driving circuit to effectively compensate the threshold voltage of the driving thin film transistor, so that the current flowing through the organic light emitting diode is stabilized while reducing the leakage current of the gate and the source of the driving thin film transistor in the light emission stage, the stability of the compensation data in the light emission stage, to enhance the compensation effect.Type: GrantFiled: February 16, 2017Date of Patent: November 27, 2018Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Limin Wang
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Patent number: 10127881Abstract: Provided are a display driving circuit, a display device and a driving method thereof, which are capable of avoiding an influence of a feed through effect on a voltage difference between a pixel electrode and a common electrode and thus improving the quality of a displayed picture. The display driving circuit comprises a gate driving unit for controlling a thin film transistor TFT to be turned on, a source driving unit for outputting a signal to a source of the TFT, and a circuit unit for supplying a power to a common electrode, the circuit unit outputs a first voltage to the common electrode when the TFT is in a turn-on state, and the circuit unit outputs a second voltage to the common electrode when the TFT is in a turn-off state, wherein the first voltage is a voltage different from the second voltage.Type: GrantFiled: May 20, 2013Date of Patent: November 13, 2018Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jianming Wang, Liang Zhang, Yizhen Xu
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Patent number: 10121414Abstract: A display device that includes a pixel including an organic light emitting diode (OLED), a driving transistor connected to the driving voltage and supplying a driving current to the OLED, a compensation capacitor connected to the gate electrode of the driving transistor, and a first storage capacitor and a second storage capacitor electrically connected to or blocked from the compensation capacitor, and a driving method thereof.Type: GrantFiled: September 29, 2015Date of Patent: November 6, 2018Assignee: Samsung Display Co., Ltd.Inventor: Sang-Myeon Han
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Patent number: 10109243Abstract: Disclosed is a display apparatus comprising: a signal receiver configured to receive an image signal; a signal processor configured to process the received image signal; a display comprising a display panel which displays an image based on the processed image signal, and a plurality of light emitting diode (LED) groups each of which comprises a plurality of LEDs connected in series and the LED groups being connected in parallel with each other to emit light for an image to be displayed on the panel in accordance with a driving current; a plurality of switches respectively provided in the LED groups and selectively cutting off flow of a driving current in each LED group; a voltage adjuster configured to apply a driving voltage to the plurality of LED groups; and a controller configured to control the plurality of switches so that the driving current can flow in the LED group to be driven among the plurality of LED groups, and to control the voltage adjuster so that the applied driving voltage can have a presetType: GrantFiled: February 8, 2016Date of Patent: October 23, 2018Assignee: Samsung Electronics Co., Ltd.Inventor: Jeong-il Kang
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Patent number: 10108295Abstract: An input device including a housing, a plurality of sensing electrodes, a conductive element, a sensing circuit, a control circuit, and a transmitting circuit is provided. The sensing electrodes are disposed on an inner edge of the housing. The conductive element is used for placing into the housing and is surrounded by the sensing electrodes to couple with the sensing electrodes. The sensing circuit is coupled to the sensing electrodes to scan capacitance values of the sensing electrodes and correspondingly provide raw sensing data. The control circuit is coupled to the sensing circuit to receive the raw sensing data and provide a touch operation signal according to the raw sensing data. The transmitting circuit is coupled to the control circuit and a host for transmitting the touch operation signal to the host.Type: GrantFiled: April 17, 2017Date of Patent: October 23, 2018Assignee: Acer IncorporatedInventors: Chia-Lun Chang, Chueh-Pin Ko
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Patent number: 10089915Abstract: A gate driving circuit and a display device using the same are provided. The gate driving circuit includes a first gate driving circuit configured to sequentially generate first and second output voltages and a second gate driving circuit configured to sequentially generate first and second output voltages. The first gate driving circuit and the second gate driving circuit are asymmetrically connected to gate lines. The first output voltage of the first gate driving circuit is supplied to an nth gate line, and the second output voltage of the second gate driving circuit is supplied to the nth gate line.Type: GrantFiled: May 6, 2016Date of Patent: October 2, 2018Assignee: LG Display Co., Ltd.Inventors: Haye Kim, Seeung Lee, Seonghun Jeong
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Patent number: 10078992Abstract: A scan driving circuit is disclosed for executing a driving operation for cascaded scan lines and includes a pull-down control module, a pull-down module, a reset control module, a reset module, a down-stream module, a first bootstrap capacitor, a constant low-level voltage source utilized, and a constant high-level voltage source. The whole structure of the disclosed scan driving circuit is simple, and power consumption is low.Type: GrantFiled: August 10, 2015Date of Patent: September 18, 2018Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.Inventors: Juncheng Xiao, Mang Zhao, Yong Tian
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Patent number: 10067591Abstract: Disclosed are a touch device and a driving method thereof. The touch device includes a touch screen, a detection circuit and a driving circuit, the touch screen including a common electrode, an induction electrode and a pixel electrode, the detection circuit including a first input terminal, a second input terminal and an output terminal, the first input terminal being connected with the induction electrode; during a display period, the common electrode is configured to load a common electrode signal outputted by the driving circuit, the pixel electrode is configured to load a pixel electrode signal outputted by the driving circuit, a display electric field is generated between the common electrode and the pixel electrode, the reference signal is the same as the common electrode signal. In this disclosure, no voltage difference is generated between the common electrode signal and the reference signal, and thus avoiding affecting the normal display of the touch device.Type: GrantFiled: October 30, 2014Date of Patent: September 4, 2018Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Weijie Zhao, Xue Dong, Haisheng Wang, Yingming Liu
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Patent number: 10067579Abstract: An amending circuit includes a comparing unit, a predetermined voltage generating unit, a roller switch, alight emitting unit switch and a controlling unit. A pin of the mouse and the predetermined voltage generating unit are respectively connected to two input terminals of the comparing unit. The controlling unit is coupled to the light emitting unit switch and the roller switch. The controlling unit switches to a motion detecting mode to drive a current of the current source to flow toward a second pin via the first pin and a light emitting unit of the mouse. The controlling unit further switches to a roller detecting mode to set a pressure of the first pin lower than a predetermined voltage of the predetermined voltage generating unit while the roller is grounded or to set the first pin higher than the predetermined voltage while the roller is not grounded.Type: GrantFiled: October 8, 2015Date of Patent: September 4, 2018Assignee: PixArt Imaging Inc.Inventors: Cheng-Seng Hsu, Jui-Te Chiu, Chung-Ting Yang
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Patent number: 10062331Abstract: The present invention relates to a display device which can provide optimal luminance and visibility to viewers by considering a viewing environment, a viewing distance and image characteristics in an associated manner and a method for driving the same. The method for driving a display device includes: determining final luminance by applying sensed results of ambient illumination, ambient temperature and a viewing distance from a user in an associated manner; adjusting luminance of the display device according to the determined final luminance; and calculating a weighted average picture level (WAPL) from an input image, calculating a differential gain per gray level according to the calculated WAPL, correcting the input image by applying the calculated differential gain per gray level to the input image and outputting the corrected input image.Type: GrantFiled: May 6, 2016Date of Patent: August 28, 2018Assignee: LG Display Co., Ltd.Inventors: Jae-Hong Kim, Hee-Eun Lee, Su-Hyun Kwon
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Patent number: 10056037Abstract: The invention provides an AMOLED pixel driver circuit and pixel driving method. The AMOLED pixel driver circuit has a 6T1C structure, comprising a first thin film transistor (TFT) (T1), a second TFT (T2) forming mirror relation with the first TFT (T1), a third TFT (T3), a fourth TFT (T4), a fifth TFT (T5), a sixth TFT (T6), a capacitor (c1), and an organic light-emitting diode (OLED) (D1), and receiving a first scan signal (Scan1), a second scan signal (Scan2), a third scan signal (Scan3), a data signal (Data), and a predefined voltage (Vpre). The circuit can effectively compensate the threshold voltage of the driving TFT to solve the problem of unstable current flowing through the OLED caused by the threshold voltage drift. Moreover, the use of double-gate TFT as driving TFT allows designating the threshold voltage of the driving TFT through inputting predefined voltage.Type: GrantFiled: December 20, 2016Date of Patent: August 21, 2018Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Chenglei Nie
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Patent number: 10043434Abstract: A gamma voltage generator includes a reference gamma selector, a reference gamma converter, and a gamma curve adjuster. The reference gamma selector selects a top reference gamma voltage and a bottom reference gamma voltage that are between first and second reference voltages. The reference gamma converter converts the bottom reference gamma voltage to a conversion reference gamma voltage based on the top reference gamma voltage. The gamma curve adjuster generates a plurality of grayscale gamma voltages based on the conversion reference gamma voltage and the top reference gamma voltage.Type: GrantFiled: May 9, 2016Date of Patent: August 7, 2018Assignee: Samsung Display Co., Ltd.Inventors: Yeon-Shil Jung, Tae-Wook Kim
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Patent number: 10028348Abstract: A detection resistor is arranged on a path of an LED string. A controller generates a gate pulse signal having a duty ratio adjusted such that the voltage drop at the detection resistor matches a predetermined reference voltage. Furthermore, the controller receives a dimming control signal which indicates the duty ratio of the burst dimming operation, and generates a corresponding burst dimming pulse. According to the gate pulse signal, the first driver drives an output circuit configured to generate a driving voltage. A second driver switches a path of a driving current between connection and disconnection according to the burst dimming pulse. A duty ratio detection unit controls the frequency of the gate pulse signal according to the duty ratio indicated by the dimming control signal.Type: GrantFiled: May 1, 2017Date of Patent: July 17, 2018Assignee: ROHM CO., LTD.Inventors: Yoshikazu Sasaki, Shunsuke Saito
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Patent number: 10025366Abstract: This relates to an event sensing device that includes an event sensing panel and is able to dynamically change the granularity of the panel according to present needs. Thus, the granularity of the panel can differ at different times of operation. Furthermore, the granularity of specific areas of the panel can also be dynamically changed, so that different areas feature different granularities at a given time. This also relates to panels that feature different inherent granularities in different portions thereof. These panels can be designed, for example, by placing more stimulus and/or data lines in different portions of the panel, thus ensuring different densities of pixels in the different portions. Optionally, these embodiments can also include the dynamic granularity changing features noted above.Type: GrantFiled: December 19, 2017Date of Patent: July 17, 2018Assignee: Apple Inc.Inventors: Wayne Carl Westerman, John Greer Elias, Steven P. Hotelling, Duncan Robert Kerr