Patents Examined by Sanghyuk Park
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Patent number: 11675470Abstract: Embodiments include a method and system for projected capacitive (PCAP) touchscreen construction with laser ablation. In glass/film/film (GFF) PCAP touchscreens, the films are coated with indium-tin-oxide (ITO), patterned by printing silver ink, and by ablating both the ITO and silver with a laser. A similar process occurs for a glass/glass (2GS) PCAP touchscreen. Embodiments include varying the pattern with which the laser ablates ITO on film within the touch area to improve touchscreen sensitivity. For example, by varying the width of patterns of floating ITO islands such that widths are less than or equal to a plan-view electrode gap between vertical and horizontal electrode pads and larger elsewhere, the touch sensitivity of the PCAP touchscreen may be improved and/or maximum touchscreen size may be increased.Type: GrantFiled: December 23, 2021Date of Patent: June 13, 2023Assignee: ELO TOUCH SOLUTIONS, INC.Inventor: Joel C. Kent
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Patent number: 11676551Abstract: Embodiments of the present disclosure provide a gamma voltage correction method and device, and a display device, wherein a candidate refresh rate last determined in a current frame period of a display panel is used as a target refresh rate, and a gamma voltage corresponding to the target refresh rate is used as a gamma voltage at a display phase in a next frame period of the display panel to perform brightness correction, so that flashing of the display panel during refresh rate switching is prevented, and storage resources are saved.Type: GrantFiled: December 25, 2020Date of Patent: June 13, 2023Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Wenwu Liao
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Patent number: 11645995Abstract: An array substrate has a display area and a bonding region. The display area includes a distal region away from the bonding region. The array substrate includes a base, a common electrode located in the display area, and at least one first common signal line and at least one feedback signal line that are disposed on the base. The at least one first common signal line and the at least one feedback signal line are coupled to a portion of the common electrode located in the distal region, and extend to the bonding region to be coupled to a circuit board. A feedback signal line transmits a common voltage signal of the portion of the common electrode located in the distal region to the circuit board. A first common signal line transmits a first compensation common voltage signal to the portion of the common electrode located in the distal region.Type: GrantFiled: December 28, 2020Date of Patent: May 9, 2023Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xiao Wang, Yan Yan, Yu Ma
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Patent number: 11644712Abstract: A color filter panel includes: a base substrate having a first pixel area, a second pixel area, and a light blocking area between the first pixel area and the second pixel area; a first color filter on the base substrate in the first pixel area; a second color filter on the base substrate in the second pixel area; a first photoluminescence pattern on the first color filter in the first pixel area and configured to convert a color of light; and a second photoluminescence pattern on the second color filter in the second pixel area and configured to convert a color of light. The second photoluminescence pattern partially overlaps the first photoluminescence pattern in the light blocking area.Type: GrantFiled: April 4, 2022Date of Patent: May 9, 2023Assignee: Samsung Display Co., Ltd.Inventors: Jang-Il Kim, Jeongki Kim, Jong-Hoon Kim, Jeaheon Ahn, Myoungjong Lee, Seongyeon Lee, Si-Wan Jeon, Seok-Joon Hong
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Patent number: 11640198Abstract: A system for human interaction with virtual objects comprises: a touch sensitive surface, configured to detect a position of a contact made on the touch sensitive surface; a reference layer rigidly attached to the touch sensitive surface and comprising one or more patterns; a display device, configured to display a virtual object that is registered in a reference coordinate fixed with respect to the touch sensitive surface; one or more image sensors rigidly attached to the display device, configured to capture an image of at least a portion of the one or more patterns; and at least one processor, configured to determine a position and an orientation of the display device with respect to the touch sensitive surface based on the captured image, and identify an interaction with the virtual object based on the detected position of the contact made on the touch sensitive surface.Type: GrantFiled: August 27, 2021Date of Patent: May 2, 2023Assignee: Firefly Dimension, Inc.Inventors: Ke Xu, Peng Shao
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Patent number: 11631347Abstract: A flexible display device including a flexible display panel, and a panel driver configured to receive display data from a host processor, to store the display data, and to drive the flexible display panel based on the display data. While the flexible display panel is deformed, the panel driver drives the flexible display panel based on the display data stored before the flexible display panel is deformed to display an image having a size suitable for a current exposed region of the flexible display panel.Type: GrantFiled: June 2, 2021Date of Patent: April 18, 2023Assignee: Samsung Display Co., Ltd.Inventors: Inbok Song, Sung-Yeol Baek
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Patent number: 11620954Abstract: A display device includes a display panel configured to display images, a data driver configured to supply data voltages to the display panel, and a controller configured to control the data driver, wherein the controller operates in a normal mode having normal driving conditions and a power saving mode having driving conditions for reducing power consumption and lowers a driving frequency and an environment of an interface connected to the data driver as compared to a driving frequency and an interface environment in the normal mode when operating in the power saving mode.Type: GrantFiled: November 9, 2021Date of Patent: April 4, 2023Assignee: LG Display Co., Ltd.Inventors: Sun Cheol Noh, Tae Gung Kim
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Patent number: 11614998Abstract: A multi-screen display control device includes a plurality of graphics processing units (GPUs) and a watchdog chip. The GPUs transform image data that a host transfers to the multi-screen display control device through a universal serial bus (USB) interface into a plurality of high-definition multi-media interface (HDMI) sub-images to be displayed by a plurality of screens. The watchdog chip is coupled to the GPUs and, when any of the GPUs crashes, the watchdog chip outputs a reset signal to reset all of the GPUs.Type: GrantFiled: March 19, 2021Date of Patent: March 28, 2023Assignee: SILICON MOTION, INC.Inventors: Chengliang Qi, Guangjun Lyu, Cong Li
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Patent number: 11614662Abstract: A touch display device includes a substrate; a thin film transistor over the substrate; a planarization layer over the thin film transistor; a touch line over the planarization layer; a touch insulation layer over the touch line; a touch electrode over the touch insulation layer; a pixel electrode over the touch electrode and connected to the thin film transistor, wherein the planarization layer has a first hole corresponding to a drain electrode of the thin film transistor, and the touch insulation layer has a second hole corresponding to the drain electrode, and wherein the second hole includes a first hole portion and a second hole portion connected to each other along a first direction, the first hole is disposed within the first hole portion, and the touch electrode is in contact with the touch line through the second hole portion.Type: GrantFiled: August 22, 2022Date of Patent: March 28, 2023Assignee: LG Display Co., Ltd.Inventors: Si-Hyun Kim, Hyun-Ho Park
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Patent number: 11610555Abstract: A display device includes a display portion having a substantially rectangular area with rounded edges in which a plurality of data lines are arranged. The display device includes a first area corresponding to a rounded edge part and a second area corresponding to a straight edge part adjacent to the first area. A data driving circuit includes a plurality of output channels configured to output data voltages. Odd-numbered output channels output data voltages according to a sequential arrangement of data lines in the second area. Even-numbered output channels output data voltages according to a reverse sequential arrangement of data lines in the first area.Type: GrantFiled: July 12, 2022Date of Patent: March 21, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Gyung Soon Park, Seung-Hwan Cho, Jong Hyun Choi
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Patent number: 11605359Abstract: A display apparatus includes: a display panel including a display region, a first peripheral region, and a second peripheral region; and a circuit substrate. The display panel includes a gate drive circuit, n number of clock main lines, an outer main line and an inner main line, and a plurality of branch wiring lines. The first peripheral region includes a plurality of unit regions. The plurality of unit regions includes a first unit region and a second unit region. A resistance value of the at least one branch wiring line between the inner main line and the outer main line in the first unit region is smaller than a resistance value of the at least one branch wiring line between the inner main line and the outer main line in the second unit region.Type: GrantFiled: June 24, 2022Date of Patent: March 14, 2023Assignee: Sharp Display Technology CorporationInventor: Hidetoshi Nakagawa
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Patent number: 11600237Abstract: A liquid crystal display (LCD) device includes an LCD panel with a number (N) of pixel elements for displaying an image. A dimming panel includes N dimming elements. The dimming panel has a first mode to apply a uniform dimming to the N dimming elements to provide a privacy function for the LCD device. The dimming panel further has a second mode to a apply a per-element dimming to provide a local dimming function for the LCD device.Type: GrantFiled: July 29, 2021Date of Patent: March 7, 2023Assignee: Dell Products L.P.Inventors: Asim Siddiqui, Jong Seo Lee
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Patent number: 11599000Abstract: According to one embodiment, a display panel includes scanning lines, signal lines, a pixel switching element, a pixel electrode, and a first control switch including first control switching elements. Each of the first control switching elements is composed of a transistor and includes a gate electrode, a source electrode, and a drain electrode. The scanning lines electrically connected to the gate electrodes of the first control switching elements are different from each other. The drain electrodes of the first control switching elements are electrically bundled and are connected to power source voltage output terminal of the first control switch.Type: GrantFiled: June 27, 2022Date of Patent: March 7, 2023Assignee: Japan Display Inc.Inventors: Hirondo Nakatogawa, Yoshiro Aoki
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Patent number: 11598999Abstract: A liquid crystal device that is an electro-optical device includes: a transistor including a semiconductor layer extending along a Y axis extending direction that is a first direction, a light shielding region that is a light shielding layer including a first extending portion extending along the first direction, and a wide portion overlapping a channel region of the semiconductor layer and provided wider than the first extending portion, an interlayer insulation layer provided with an opening in a region overlapping the light shielding region, and a capacitance element including a first capacitance electrode provided in the opening of the interlayer insulation layer and including a protruding portion protruding over the interlayer insulation layer, and a second capacitance electrode provided to cover the protruding portion of the first capacitance electrode.Type: GrantFiled: June 26, 2022Date of Patent: March 7, 2023Assignee: SEIKO EPSON CORPORATIONInventor: Yuki Koga
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Patent number: 11594186Abstract: A display device and a driving circuit are discussed. According to an embodiment of the present disclosure, it is possible to stably maintain the output signal of the driving circuit when the lock signal indicating the synchronization state of the clock signal is changed due to an operation error such as overcurrent in a display device using a point-to-point interface. In addition, according to an embodiment of the present disclosure, it is possible to prevent damage to the display panel due to an overload generated in the output signal of the driving circuit by an operation error. In addition, according to an embodiment of the present disclosure, it is possible to prevent overload of the driving circuit and damage to the display panel by controlling the operation of the driving circuit through a differential input voltage between the timing controller and the driving circuit.Type: GrantFiled: November 12, 2021Date of Patent: February 28, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Jinhee Jung, MooKyoung Hong
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Patent number: 11587233Abstract: The present invention relates to a method, system and computer program product for defect enhancement. According to the method, a plurality of proposed regions from a plurality of images taken for a display panel is obtained. Each of proposed region of the plurality of proposed regions include a suspected defect on the display panel. At least two proposed regions from the plurality of proposed regions that deserve to be superimposed based on a set of conditions is determined. The at least two proposed regions for acquiring an enhanced defect are superimposed.Type: GrantFiled: October 17, 2019Date of Patent: February 21, 2023Assignee: International Business Machines CorporationInventors: JingChang Huang, Sheng Nan Zhu, Fan Li, Peng Ji, Jian Xu, Wei Zhao, Jinfeng Li
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Patent number: 11580928Abstract: The present disclosure relates to a circuit of controlling a common voltage of a liquid crystal panel. According to an embodiment of the present disclosure, a voltage control circuit is configured to provide a common voltage to a common electrode of a liquid crystal panel. The liquid crystal panel includes M rows and N columns of pixel units. Each pixel unit is coupled to the common electrode. The voltage control circuit includes an operational amplifier arranged in a negative feedback configuration. The operational amplifier includes: an input stage, a gain stage and an output stage. The output stage includes a second NMOS transistor and a second PMOS transistor. A gate of the second NMOS transistor receives a first control signal, a drain of the second NMOS transistor is coupled to a gate of a first PMOS transistor, and a source of the second NMOS transistor is coupled to a second reference voltage.Type: GrantFiled: June 23, 2022Date of Patent: February 14, 2023Assignee: OMNIVISION TDDI ONTARIO LIMITED PARTNERSHIPInventor: Wang-Jhe Huang
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Patent number: 11580903Abstract: The present application provides a display panel, belonging to the field of display technology. The display panel includes a base substrate, and a first electro-conductive pattern and a second electro-conductive pattern which are arranged on the base substrate, wherein the first electro-conductive pattern includes a first electrode layer, the second electro-conductive pattern includes a second electrode layer, at least one of the first electro-conductive pattern and the second electro-conductive pattern further includes an antenna pattern, and the antenna pattern is insulated from the electrode layer in the electro-conductive pattern where the antenna pattern is located.Type: GrantFiled: April 8, 2020Date of Patent: February 14, 2023Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Sha Liu, Yalong Su, Wenting Tian, Xiao Sun, Yun Qiu, Qiang Zhang, Zhaokun Yang, Pingqi Zhang, Yingji Jiang
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Patent number: 11567608Abstract: Embodiments of the present disclosure are related to a touch display device, as implementing a portion of a touch link line by using a metal disposed on a layer different from a layer where a data link line is disposed and disposing a color filter layer between the touch link line and the data link line, a plurality of link lines can be disposed effectively and a parasitic capacitance between the touch link line and the data link line can be reduced. Furthermore, as blocking a light of specific wavelength band by the color filter layer, a light-leakage due to an abnormal driving of a display according to a driving of the touch link line on an area where the touch link line is disposed can be prevented or at least reduced.Type: GrantFiled: July 16, 2021Date of Patent: January 31, 2023Assignee: LG Display Co., Ltd.Inventors: SangYoon Paik, SeoungJin Park
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Patent number: 11568830Abstract: It is an object to provide a display device which can favorably display a image without delayed or distorted signals. The display device includes a first gate driver and a second gate driver. The first gate driver and the second gate driver each include a plurality of flip flop circuits and a plurality of transfer signal generation circuits. Both the flip flop circuit and the transfer signal generation circuit are circuits which output a signal inputted to a first input terminal with a half clock cycle delay. In addition, an output terminal of the transfer signal generation circuit is directly connected to a first input terminal of the flip flop circuit in the next stage. Therefore, delay and distortion of the signal which is inputted from the transfer signal generation circuit to the flip flop circuit can be reduced.Type: GrantFiled: May 18, 2022Date of Patent: January 31, 2023Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Atsushi Umezaki