Patents Examined by Keith L Crawley
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Patent number: 11967295Abstract: A display driver includes: a conversion part which converts first to n-th display data pieces representing a brightness level of each pixel based on an image signal into first to n-th gradation voltages each having a voltage value corresponding to the brightness level and outputs them, where n is an integer of 2 or more; a polarity inversion signal generation circuit which generates a polarity inversion signal for prompting polarity inversion for each frame display period according to the image signal; a first external terminal which receives an operation mode signal representing a test mode or a normal mode; and a first selector which receives a test polarity inversion signal and the polarity inversion signal, selects and outputs the polarity inversion signal when the operation mode signal represents the normal mode, and selects and outputs the test polarity inversion signal when the operation mode signal represents the test mode.Type: GrantFiled: September 5, 2022Date of Patent: April 23, 2024Assignee: LAPIS Technology Co., Ltd.Inventor: Hiroaki Ishii
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Patent number: 11963415Abstract: A display device includes a substrate. The display unit is disposed on the substrate and includes a pixel circuit and a display element electrically connected to the pixel circuit. A driving circuit is disposed outside of the display unit. The driving circuit includes a thin film transistor. An inorganic insulating layer is disposed on the driving circuit. A power supply line is disposed on the inorganic insulating layer, overlaps the driving circuit, and is connected to a common electrode of the display element. An encapsulation substrate is disposed on the power supply line and faces the substrate. A sealing material is interposed between the substrate and the encapsulation substrate and overlaps the driving circuit.Type: GrantFiled: March 4, 2023Date of Patent: April 16, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dongwook Kim, Wonkyu Kwak, Sunja Kwon, Seho Kim, Hansung Bae
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Patent number: 11948522Abstract: According to an aspect, a display device includes: an image display panel having an image display surface on which display is to be controlled based on an image signal; a light source device that includes light sources provided corresponding to divided partial areas of the image display surface, and is configured to illuminate the image display surface; and a signal processor configured to calculate a light quantity of each light source for each of the partial areas. The signal processor is configured to calculate the light quantity for each partial area based on the image signal, set one of the partial areas as an adjustment target partial area for the light quantity, and adjust the light quantity in the adjustment target partial area when the light quantity of an adjacent partial area located around the adjustment target partial area is equal to or smaller than a predetermined value.Type: GrantFiled: September 16, 2021Date of Patent: April 2, 2024Assignee: Japan Display Inc.Inventors: Kazuhiko Sako, Tsutomu Harada
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Patent number: 11934595Abstract: A user input device that includes a rotary input control is described herein. The rotary input control includes first and second ferritic substrates; first and second permanent magnets extending between the first and second ferritic substrates to form a magnetic circuit; one or more magnetizing coils wrapped around the first permanent magnet; and a wheel defining a central volume within which the first and second ferritic substrates, the first and second permanent magnets and the one or more magnetizing coils are positioned. The user input device also includes a control system configured to direct current to the one or more magnetization coils to change a magnetization of the first permanent magnet to adjust a resistance profile of the rotary input control.Type: GrantFiled: June 21, 2019Date of Patent: March 19, 2024Assignee: Logitech Europe S.A.Inventors: Maxim Vlasov, Nicolas Ramond, Jean-Claude Dunant, Patrick Cerisier
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Patent number: 11928994Abstract: A display device includes a substrate including a display area and a non-display area disposed near the display area, a plurality of pixels disposed in the display area, a plurality of signal lines disposed on the substrate and connected to the pixels, and a pad portion disposed in the non-display area and including a plurality of pads. The signal lines include a first crack detecting line connected to a first test voltage pad and a first pad at a first node, connected to a second pad at a second node, and extending around the non-display area between the first node and the second node, as well as a first data line including a first end connected to a first transistor connected to the first crack detecting line at the second node, and a second end connected to corresponding pixels from among the plurality of pixels.Type: GrantFiled: June 4, 2019Date of Patent: March 12, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kwang Sae Lee, Ji-Hyun Ka, Won Kyu Kwak, Hwa Young Song, Ki Myeong Eom
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Patent number: 11922894Abstract: Provided are a driving method of a display apparatus, a driving apparatus, an electronic device and a storage medium. The display apparatus includes a first display panel and a second display panel disposed on a light-emitting side of the first display panel, wherein the first display panel is divided into a plurality of pixel blocks; and the driving method includes: acquiring an angle between a user's eye and each pixel block and initial brightness data corresponding to the first display panel; determining misalignment information corresponding to each pixel block according to the angle between the user's eye and each pixel block; correcting the initial brightness data according to the misalignment information corresponding to each pixel block to obtain corrected brightness data; and outputting the corrected brightness data to the first display panel.Type: GrantFiled: September 15, 2021Date of Patent: March 5, 2024Assignees: Beijing BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventor: Chunbing Zhang
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Patent number: 11925086Abstract: A display device includes a substrate. The display unit is disposed on the substrate and includes a pixel circuit and a display element electrically connected to the pixel circuit. A driving circuit is disposed outside of the display unit. The driving circuit includes a thin film transistor. An inorganic insulating layer is disposed on the driving circuit. A power supply line is disposed on the inorganic insulating layer, overlaps the driving circuit, and is connected to a common electrode of the display element. An encapsulation substrate is disposed on the power supply line and faces the substrate. A sealing material is interposed between the substrate and the encapsulation substrate and overlaps the driving circuit.Type: GrantFiled: March 4, 2023Date of Patent: March 5, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Dongwook Kim, Wonkyu Kwak, Sunja Kwon, Seho Kim, Hansung Bae
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Patent number: 11908400Abstract: A system including a display module and a system module. The display module is integrated in a portable device with a display communicatively coupled to one or more of a driver unit, a measurement unit, a timing controller, a compensation sub-module, and a display memory unit. The system module is communicatively coupled to the display module and has one or more interface modules, one or more processing units, and one or more system memory units. At least one of the processing units and the system memory units is programmable to calculate new compensation parameters for the display module during an offline operation.Type: GrantFiled: November 17, 2022Date of Patent: February 20, 2024Assignee: Ignis Innovation Inc.Inventor: Gholamreza Chaji
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Patent number: 11908394Abstract: Provided are a display panel, a driving method, and a display device. The display panel includes: a gate driving circuit, a pixel driving circuit, and a light-emitting component. The pixel driving circuit includes a driving transistor, a data writing module, a threshold compensation module, and a light-emitting control module. A transistor in the threshold compensation module is a P-type transistor and a transistor in the light-emitting control module is an N-type transistor, or the transistor in the threshold compensation module is an N-type transistor and the transistor in the light-emitting control module is P-type transistor. A control terminal of the threshold compensation module and a control terminal of the light-emitting control module are electrically connected to a same gate driving circuit.Type: GrantFiled: January 11, 2023Date of Patent: February 20, 2024Assignees: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Mengmeng Zhang, Jieliang Li, Xingyao Zhou, Yue Li, Lilian Kuang
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Patent number: 11899214Abstract: An electronic device such as a head-mounted device may have a user display for displaying an image to a user. The image may be displayed at an eye box after passing through a lens that is interposed between the display and the eye box. A forward-facing component such as a forward-facing camera and/or an externally viewable display may be supported in the housing. The forward-facing component may be overlapped by an optical system. The optical system may have a double-folded light path that virtually shifts the position of the forward-facing component. The optical system may have a reflective polarizer and a partially reflective mirror that are separated by a given distance. The optical system may virtually shift the forward-facing component toward the eye box by twice the given distance.Type: GrantFiled: December 1, 2021Date of Patent: February 13, 2024Assignee: Apple Inc.Inventor: Yury A. Petrov
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Patent number: 11887549Abstract: The present disclosure relates to a color gamut mapping method and a color gamut mapping device. A color gamut mapping method may include converting, by a color space converter, first three-color signals into a first luminance component and a pair of first chrominance components and outputting the first luminance component and the pair of first chrominance components, controlling, by a saturation controller, a saturation of the first chrominance component for each control area using a saturation gain of the saturation controller and outputting a second chrominance component, controlling, by a hue controller, a hue of the second chrominance component for each control area and outputting a third chrominance component, interpolating, by an overall controller, a set value of a luminance gain using grayscale differences between the first three-color signals, outputting a second luminance component by controlling first luminance component using the interpolated luminance gain.Type: GrantFiled: November 3, 2021Date of Patent: January 30, 2024Assignee: LX SEMICON CO., LTD.Inventors: Hyun Kyu Jeon, Ji Won Lee, Ji Hong Yuk, Chang Young Bae, Seul Gi Lee
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Patent number: 11886700Abstract: Methods and systems for providing computer implemented services using user input are disclosed. To obtain the user input, a human interface device may be used. Interpretation of actuation of the human interface device may be based on a location of the human interface device relative to a sensing system when the actuation is performed. Sensing elements integrated into the sensing system may be used to obtain user input from the human interface device at the location, the user input then being interpreted based on the location to provide the computer implemented services.Type: GrantFiled: March 9, 2023Date of Patent: January 30, 2024Assignee: Dell Products L.P.Inventors: Hsu-Feng Lee, Chiu-Jung Tzen, Brandon Joel Brocklesby, Michiel Sebastiaan Emanuel Petrus Knoppert, Loo Shing Tan, Gerald Rene Pelissier, Thomas Marcus Hinskens
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Patent number: 11881131Abstract: A display device includes a substrate including a display area and a non-display area disposed near the display area, a plurality of pixels disposed in the display area, a plurality of signal lines disposed on the substrate and connected to the pixels, and a pad portion disposed in the non-display area and including a plurality of pads. The signal lines include a first crack detecting line connected to a first test voltage pad and a first pad at a first node, connected to a second pad at a second node, and extending around the non-display area between the first node and the second node, as well as a first data line including a first end connected to a first transistor connected to the first crack detecting line at the second node, and a second end connected to corresponding pixels from among the plurality of pixels.Type: GrantFiled: June 4, 2019Date of Patent: January 23, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kwang Sae Lee, Ji-Hyun Ka, Won Kyu Kwak, Hwa Young Song, Ki Myeong Eom
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Patent number: 11854450Abstract: A display device includes a display panel including a plurality of pixels, a data driver configured to provide data signals to the plurality of pixels, a scan driver configured to provide scan signals to the plurality of pixels, and a controller configured to control the data driver and the scan driver. The controller includes a volatile age memory configured to store accumulated degradation amounts for the plurality of pixels, and an internal age memory configured to store backup accumulated degradation amounts generated based on the accumulated degradation amounts. The controller is further configured to compensate input image data by selectively using the accumulated degradation amounts of the volatile age memory or the backup accumulated degradation amounts of the internal age memory.Type: GrantFiled: July 20, 2021Date of Patent: December 26, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jongman Kim, Hyungkeun Park
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Patent number: 11837163Abstract: The present disclosure provides a display panel having a display area and including: a plurality of infrared emitting units and a plurality of infrared receiving units in the display area. The plurality of infrared emitting units are configured to emit infrared light to outside of the display panel, and the plurality of infrared receiving units are configured to receive the infrared light reflected by an object outside the display panel and output an electrical signal according to the received infrared light.Type: GrantFiled: February 18, 2021Date of Patent: December 5, 2023Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Peng Xu, Jianbo Ye, Ju Mei, Zhenzhen Wang, Guoqiang Ma
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Patent number: 11804186Abstract: A display apparatus includes a power supply device. The power supply device includes a power supply part and an integrated circuit chip. The power supply part outputs a first power to drive a backlight and a second power to drive a main circuit. The integrated circuit chip increases, based on a control signal to adjust a brightness of the backlight being received, a current value of the second power, and reduces, based on the control signal not being received for a first threshold time, the current value of the second power.Type: GrantFiled: January 12, 2022Date of Patent: October 31, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jiwon Lee, Sungyong Joo, Junhyun Won
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Patent number: 11798501Abstract: This application is directed to a method for correct temperature measurement. An electronic device includes a temperature sensor that measures an ambient temperature of an environment and a display that is driven by a display driver. The electronic device determines a brightness setting of the display, estimates a display driver current based on the brightness setting, estimates a driver efficiency of the display driver based on the display driver current, and combines a predetermined display driver voltage, the display driver current, and the driver efficiency to determine a power consumption of the display driver. An ambient temperature correction is determined in accordance with the determined power consumption of the display driver, and the measured ambient temperature is thereby corrected using the ambient temperature correction. In some implementations, a power consumption of a distinct heat-generating electronic component is also monitored for adjusting the ambient temperature correction.Type: GrantFiled: August 25, 2020Date of Patent: October 24, 2023Assignee: Google LLCInventors: Jeffrey Kevin Tu, Kristen Rebecca Pownell, Philip Hobson Boothby, Arun Prakash Raghupathy, Emil Rahim, Chintan Trehan
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Patent number: 11790862Abstract: A display apparatus includes a display panel having a plurality of pixels, a gate driver configured to provide a gate signal to the display panel, a data driver configured to provide a data signal to the display panel, and a driving controller configured to control the gate driver and the data driver and to receive input image data to generate output image data corresponding to the data signal. The driving controller is configured to determine a scale factor based on a total load value of previous input image data and to compare the current input image data with the previous input image data to determine whether to apply the scale factor to the current input image data.Type: GrantFiled: January 3, 2022Date of Patent: October 17, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jang-Mi Lee, Kihyun Pyun, Hyoseok Yun
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Patent number: 11776491Abstract: In an image display device including a backlight (6) divided into multiple regions, color shift information (CSR, CSB) is generated from a light source control value (BL(i,j)) for each region, the region to which a pixel of interest belongs and regions therearound are taken as reference regions, luminance conversion information is generated from the light source control value for each reference region, color conversion information is generated from the color shift information for each reference region, and an image signal is converted based on the color conversion information and luminance conversion information, so that an output image signal is generated. Even when there is light leakage from a peripheral region, it is possible to perform color correction so that the color difference is not noticeable at a region boundary portion.Type: GrantFiled: March 18, 2019Date of Patent: October 3, 2023Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Hideki Yoshii
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Patent number: 11769460Abstract: An image displaying apparatus with local dimming control with 2-line addressing is disclosed. The apparatus includes a display panel, a light-emitting diode (LED) backlight divided into a plurality of zones, and a control unit. The control unit is configured to couple a dimming data to the LED backlight. The zones of the LED backlight are driven by row enable signals and column driving signals based on the dimming data. Each individual column driving signal transmits a common brightness data, a first residual brightness data, and a second residual brightness data. A first row enable signal has a first enable pulse in a frame period, and a second row enable signal has a second enable pulse in the frame period. The first and second enable pulses are at least partially overlapped for reducing a pulse current of the LED backlight for enhancing a lifetime of the LED backlight.Type: GrantFiled: August 26, 2021Date of Patent: September 26, 2023Assignee: Solomon Systech (Shenzhen) LimitedInventors: Wing Chi Stephen Chan, Ting On Ngan, Chi Wai Lee, Shu Shing Ching