Backlight Control Patents (Class 345/102)
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Patent number: 11928999Abstract: The present disclosure relates to a display device and a method of driving the same, and more specifically, to a display device for preventing a user from recognizing a change in luminance when a frame frequency is changed, and a method of driving the same. A display device of the present disclosure includes a display panel including a plurality of pixel regions, a gate driver configured to sequentially supply light emission control signals to horizontal lines of the display panel, a data driver configured to supply a data signal corrected by a source voltage to the display panel, and a dimming controller configured to control whether to gradually change a frame frequency and gamma correction data according to a duty ratio of the light emission control signal.Type: GrantFiled: December 14, 2020Date of Patent: March 12, 2024Assignee: LG Display Co., Ltd.Inventors: Won-Seok Song, Su-Bin Park, Sung-Chang Park, Kyeong-Min Moon
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Patent number: 11922090Abstract: The present invention relates to an apparatus and method for controlling automatic color calibration of a video wall by smoothly displaying an entire video on the video wall and improving user visibility. The automatic color calibration apparatus comprises a control unit configured to output the number of the plurality of video boards constituting the video wall to the display unit and store the number in a storage unit according to operation signals from the user input unit, and perform automatic color calibration for the plurality of video boards.Type: GrantFiled: July 21, 2021Date of Patent: March 5, 2024Assignee: HYUNDAI IT CO., LTD.Inventors: Yong Tae Kim, Yong Seog Kim, Ji Hoon Shim
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Patent number: 11924560Abstract: A studio display environment and/or applications thereof are provided, wherein a display (e.g. LED display) is used onto which images or video are being shown, that are recorded by one or more cameras. The invention further relates to methods and systems for improved camera view in such studio display environment and/or applications.Type: GrantFiled: July 14, 2022Date of Patent: March 5, 2024Assignee: STEREYO BVInventors: Robbie Thielemans, Vince Dundee
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Patent number: 11914141Abstract: An electronic device such as a head-mounted device may have gaze tracking sensors and other circuits that include packaged light-emitting devices. The packaged light-emitting devices may each include a light-emitting component such as a light-emitting diode or laser that emits infrared light or light of other wavelengths. The packaged light-emitting devices may have protection circuitry. The protection circuitry of each device may include one or more sensors such as a package integrity sensor, a proximity sensor, a photodetector for measuring emitted light intensity, a temperature sensor for measuring a temperature associated with the light-emitting component, and a current sensor. A control circuit such as an integrated circuit containing a comparator or other analog circuitry and/or a digital control circuit may gather information from one or more of the sensors and may control the light-emitting component based on the sensor information to prevent elevated light emission intensities.Type: GrantFiled: June 27, 2019Date of Patent: February 27, 2024Assignee: Apple Inc.Inventors: Fletcher R. Rothkopf, James W. Vandyke
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Patent number: 11906758Abstract: A multiview backlight and display employ diffusion of directional light beams to provide an image of color regions of a color-tailored multibeam element having a size comparable to a size of the color-tailored multibeam element. The multiview backlight includes an array of color-tailored multibeam elements configured to provide the directional light beams and an optical diffuser configured to spread out directional light beams to provide the color region image. The multiview display includes an array of the color-tailored multibeam elements and the optical diffuser. The multiview display further includes an array of light valves configured to modulate the directional light beams as a multiview image.Type: GrantFiled: February 23, 2022Date of Patent: February 20, 2024Assignee: LEIA INC.Inventors: David A. Fattal, Thomas Hoekman
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Patent number: 11900859Abstract: A driver system controls a plurality of light emitting diodes (LEDs). The driver system includes a first driver to provide an LED current to each of the plurality of LEDs. The first driver includes a current mirror for the LED current provided to the plurality of LEDs. The driver system also includes a second driver to modulate the LED current provided to the plurality of LEDs.Type: GrantFiled: May 21, 2021Date of Patent: February 13, 2024Assignee: Lumileds LLCInventors: Wilhelmus Johannes Robertus Van Lier, Marcus Hendrikus Adrianus van Steen, Nicola Bettina Pfeffer, Rob Jacques Paul Engelen, Erkan Diken, Arjen Gerben Van Der Sijde
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Patent number: 11899312Abstract: A display apparatus includes a liquid crystal panel disposed on a back-light unit; and a viewing angle control unit disposed between the back-light unit and the liquid crystal panel, wherein the viewing angle control unit includes light-blocking patterns having a light-blocking material and variable patterns disposed between a first control electrode and a second control electrode, wherein the variable patterns are extended in a direction perpendicular to the light-blocking patterns, and wherein transmittance of each variable pattern is changed according to a voltage applied to the first control electrode and the second control electrode, thereby preventing a distraction of people around a user by selectively sharing a realized image.Type: GrantFiled: December 13, 2021Date of Patent: February 13, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Jae Yeong Choi, Joon Ho Lee, Dae Yun Im
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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: 11886065Abstract: The present disclosure relates to a display panel, a temperature compensation method thereof and a display device. The display panel includes: a first substrate; a second substrate; a liquid crystal layer; a plurality of temperature sensors; a plurality of heaters; an electrical signal supply circuit; a processor; and a controller. The display device includes a driving circuit and the display panel. The driving circuit includes a source driving circuit, a gate driving circuit, and a timing controller.Type: GrantFiled: June 10, 2020Date of Patent: January 30, 2024Assignees: BEIHAI HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Kaijun Liu, Yu Lien Chou, Je-Hao Hsu
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Patent number: 11854774Abstract: Disclosed is a detection device which includes a measurement unit including an illumination sensor that measures an amount of light in an interior of a chamber, and a detection unit that detects whether plasma is generated in the interior of the chamber, through analysis of the amount of the light.Type: GrantFiled: August 17, 2021Date of Patent: December 26, 2023Assignee: PSK Holdings Inc.Inventors: Nam Young Kim, Hyeong Mo Yoo
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Patent number: 11854501Abstract: The present disclosure provides a backlight driving circuit including a power supply module and a current adjustment module. The current adjustment module detects the brightness of the first light-emitting columns and/or the second light-emitting columns to obtain detection current, and compares the detection current with a mode switching current. The current adjustment module controls one first light-emitting column and one second light-emitting column to connect with one first wire simultaneously, or controls one first light-emitting column to connect with one second connecting wire and controls one second light-emitting column to connect with another second connecting wire.Type: GrantFiled: June 9, 2023Date of Patent: December 26, 2023Assignees: MIANYANG HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITEDInventors: Guofei Ji, Dalei Zhang, Haoxuan Zheng
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Patent number: 11842559Abstract: Methods, devices and systems for controlling an ultrasonic fingerprint sensor are disclosed. Some examples involve determining that a first bias voltage is not sufficient for one or more affected ultrasonic receiver pixels of the ultrasonic receiver array and determining one or more affected regions of the ultrasonic receiver array in which the one or more affected ultrasonic receiver pixels are located. Some examples involve determining one or more unaffected regions of the ultrasonic receiver array in which the one or more affected ultrasonic receiver pixels are not located. Some examples involve determining a second bias voltage for the one or more affected regions and recalibrating the ultrasonic fingerprint sensor to apply the second bias voltage to the affected regions and to apply the first bias voltage to the one or more unaffected regions when the ultrasonic receiver array receives ultrasound signals.Type: GrantFiled: November 14, 2022Date of Patent: December 12, 2023Assignee: QUALCOMM IncorporatedInventors: Chandrika Singasani, Nirma Lnu
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Patent number: 11842700Abstract: Throttling circuitry may throttle the backlight reconstruction via backlight reconstruction and compensation circuitry in a display pipeline when power may be limited. This throttling of the display pipeline may limit a number of cycles that may be used for performing backlight reconstruction and compensation.Type: GrantFiled: February 14, 2023Date of Patent: December 12, 2023Assignee: Apple Inc.Inventors: Prabhu Rajamani, Liang Deng, Oren Kerem, Meir Harar, Ido Yaacov Soffair, Assaf Menachem, John H. Kelm, Rohit K. Gupta
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Patent number: 11837181Abstract: An image display method includes, with respect to each of a plurality of input images, generating luminance setting data that sets a luminance value for each of a plurality of light-emitting regions of a backlight configured in a matrix form based on the input image, generating gradation setting data that sets a gradation value for each of a plurality of pixels of a liquid crystal panel coupled to the backlight, based on the generated luminance setting data and the input image, and controlling the backlight based on the luminance setting data and the liquid crystal panel based on the gradation setting data to display an image. At least one of the luminance setting data and the gradation setting data for a first input image among the plurality of input images is generated based on the luminance setting data for a second input image immediately preceding the first input image.Type: GrantFiled: February 22, 2022Date of Patent: December 5, 2023Assignee: Nichia CorporationInventor: Masahiko Monomoshi
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Patent number: 11829225Abstract: Embodiments may include systems, techniques, methods, apparatus and/or device to receive an input selecting one or more areas of a display of the computing device, leaving one or more other areas of the display unselected, and to apply a masking layer to mask either pixels of the one or more selected areas or pixels of the one or more unselected areas to cause the masked pixels to be dimmed, to reduce power consumption by the display. Embodiments may further include where the one or more of the selected areas include a focus area of interest, and to apply the masking layer to mask pixels of the one or more unselected areas to cause the masked pixels to be dimmed. Embodiments may be implemented via software without directly interacting with hardware. Other embodiments may be described or claimed.Type: GrantFiled: February 24, 2021Date of Patent: November 28, 2023Assignee: Intel CorporationInventors: Lunkai Zou, Hua-Mei Yang, Yiming He, Feng-Ming Yang, Ajay Saini, Ahmed Omer
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Patent number: 11830394Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to manage display luminance, for the purpose of power efficiency, halo reduction, and flicker prevention. An example apparatus includes a backlight analyzer to determine a first baseline luminance level associated with a first segment of a backlight of a screen of a display device based on pixel data defining a frame of content to be displayed via the screen and to determine a second baseline luminance level associated with a second segment of the backlight different than the first segment based on the pixel data, a segment-pair ratio analyzer to determine a segment-pair luminance ratio between the first and second segments based on the first and second baseline luminance levels, and a luminance controller to adjust an amount of power provided to at least one of the first segment of the backlight or the second segment of the backlight when the segment-pair luminance ratio satisfies a threshold.Type: GrantFiled: December 23, 2021Date of Patent: November 28, 2023Assignee: Intel CorporationInventors: Roland Wooster, Perazhi Sameer Kalathil
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Patent number: 11830447Abstract: The present disclosure relates to a liquid crystal display drive device and a method of driving the same. An image processor of a liquid crystal display device may generate second pixel data by applying a first gain, determined according to a brightness level of each LED element, to first pixel data of each subpixel, may calculate a second gain by using a differential value obtained by differentiating the brightness level of each LED element for a location of each subpixel, and a weight and a compensation coefficient determined according to the brightness level of each LED element, generate third pixel data by applying the second gain to the second pixel data, and output the third pixel data.Type: GrantFiled: December 14, 2021Date of Patent: November 28, 2023Assignee: LX SEMICON CO., LTD.Inventors: Do Hoon Lee, Hyun Kyu Jeon, Ji Won Lee, Chan Yung Kim
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Patent number: 11821171Abstract: A work machine 10 includes: a load detection unit 22a that detects a load on an operation mechanism 100; information output devices 43, 44, and 41a that output at least one of an image, a sound, and a vibration to an operator; and a control unit 47a that controls, according to the magnitude of a load detected by the load detection unit 22a, one or more of the level of at least one of the color intensity, the brightness, and the transparency of an image output by the information output device 44, at least one of the intensity and the level of frequency of a sound output by the information output device 43, and at least one of the intensity and the level of frequency of a vibration output by the information output device 41a.Type: GrantFiled: November 29, 2019Date of Patent: November 21, 2023Assignee: Kobelco Construction Machinery Co., Ltd.Inventors: Seiji Saiki, Yoichiro Yamazaki, Hitoshi Sasaki
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Patent number: 11822181Abstract: Provided is a liquid crystal display device sequentially including: a first polarizer; a liquid crystal panel; a second polarizer; a biaxial retarder; a third polarizer; and a backlight including a light source and a prism sheet disposed closer to the viewing surface side than the light source is. The prism sheet includes prisms arranged in multiple columns on a surface close to the viewing surface side. The liquid crystal display has a light diffusion property curve having no side lobe or having a side lobe satisfying a ratio of a local maximum luminance to a local minimum luminance of 1.35 or less, the light diffusion property curve being obtained by plotting a luminance in a white display state in a direction perpendicular to ridge lines of the prisms against a polar angle.Type: GrantFiled: May 10, 2023Date of Patent: November 21, 2023Assignee: Sharp Display Technology CorporationInventors: Yuichi Kawahira, Masahiro Hasegawa, Ryosuke Saigusa, Akira Sakai
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Patent number: 11804189Abstract: A method for generating offset current values includes: setting a current setting sequence which includes multiple current setting values; driving a light emitting unit and measuring a current value of the light emitting unit; establishing a recurrent neural network (RNN) including an input layer, a hidden layer and an output layer; and inputting the current value into the hidden layer, inputting the current setting values into the input layer sequentially, and obtaining offset values from the output layer sequentially. The offset values correspond to the current setting values respectively.Type: GrantFiled: November 23, 2022Date of Patent: October 31, 2023Assignee: Radiant Opto-Electronics CorporationInventors: Lian-Young Lee, Chun-Yi Sun, Jon-Hong Lin, Peng-Hsiang Wu, Hung-Pao Wu
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Patent number: 11804188Abstract: A mode-switchable backlight and privacy display provide narrow-angle emitted light during a first mode and broad-angle emitted light in a second mode, the broad-angle emitted light being a combination of the narrow-angle emitted light and bidirectional emitted light. The mode-switchable backlight includes a first directional backlight and a second directional backlight. The first directional backlight includes an array of narrow-angle emitters configured to provide the narrow-angle emitted light during both of the first mode and second mode, while the second directional backlight includes an array of bidirectional emitters configured to provide the bidirectional emitted light exclusively during the second mode. The mode-switchable privacy display includes an array of light valves configured to modulate the narrow-angle emitted light during the first mode and to modulate broad-angle emitted light during the second mode.Type: GrantFiled: August 27, 2021Date of Patent: October 31, 2023Assignee: LEIA INC.Inventor: David A. Fattal
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Patent number: 11800615Abstract: A method of driving a light-emitting device includes driving the light-emitting device having a light-emitting element and a light-emitting part that contains two or more types of phosphors adapted to be excited by light emitted from the light-emitting element, the two or more types of phosphors having respectively different afterglow characteristics. The driving of the light-emitting device includes supplying a current to the light-emitting element during a conducting period including a maximum current supply period in which a maximum current in the conducting period is supplied to the light-emitting element, and subsequent to the maximum current supply period, a current reduction period in which the current supplied to the light-emitting element is reduced continuously or stepwise from the maximum current.Type: GrantFiled: March 18, 2020Date of Patent: October 24, 2023Assignee: NICHIA CORPORATIONInventors: Kana Mori, Satoshi Yoshinaga
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Patent number: 11800213Abstract: The present disclosure generally provides for advanced single camera video conferencing systems and methods related thereto. The advanced single camera video conferencing system features a hybrid optical/digital camera, herein a camera device, having a controller that is configured to execute one or more of the methods set forth herein. In one embodiment, a method includes optically framing a first portion of a video conferencing environment to provide an actual field-of-view, digitally framing a second portion of the video conferencing environment to provide an apparent field-of-view that is encompassed within the actual field-of-view, generating a video stream of the apparent field-of-view, surveying the actual field-of-view to generate survey data, and detecting changes in the survey data over time. The method may be performed using a single camera device using a single image sensor.Type: GrantFiled: May 16, 2022Date of Patent: October 24, 2023Assignee: LOGITECH EUROPE S.A.Inventors: Oleg Ostap, Henry Levak, John Scott Skeehan
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Patent number: 11798508Abstract: The present invention relates to a display device having a more improved variable refresh rate (VRR) function, and comprises: a control unit for executing a variable refresh rate (VRR) function of adjusting a screen refresh rate according to an image signal; and a display unit for outputting an image according to the screen refresh rate, wherein the control unit can increase the screen refresh rate adjusted according to the image signal.Type: GrantFiled: August 20, 2019Date of Patent: October 24, 2023Assignee: LG ELECTRONICS INC.Inventor: Wonsang Jeong
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Patent number: 11796850Abstract: The display device includes a display panel, a first heating member, a second heating member, a housing, first and second chasses, first and second exhausters. The first exhauster includes a first exhaust port provided in the back surface of the housing, and exhausts air in a first internal space layer between the first chassis and the second chassis from a first exhaust port. The second exhauster exhausts air in a second internal space layer between the second chassis facing the second chassis in the housing and the back surface of the housing from a second exhaust port provided in the back surface of the housing. The first internal space layer and the second internal space layer are shielded from each other. The first exhauster exhausts the air in the first internal space layer from the first exhaust port through the exhaust duct shielded from the second internal space layer.Type: GrantFiled: April 20, 2022Date of Patent: October 24, 2023Assignee: SHARP KABUSHIKI KAISHAInventor: Tadaaki Yoshikane
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Patent number: 11798510Abstract: A display apparatus includes a display panel and a gate driving circuit. A display area of the display panel includes at least two sub-display areas, and each sub-display area of the at least two sub-display areas includes a plurality of sub-pixels. The gate driving circuit includes at least two gate driving sub-circuits in one-to-one correspondence with the at least two sub-display areas, and each gate driving sub-circuit of the at least two gate driving sub-circuits is electrically connected to a plurality of sub-pixels included in a corresponding sub-display area. Each gate driving sub-circuit is configured to receive a group of first control signals, generate a group of gate driving signals according to the group of first control signals, and output the group of gate driving signals to the plurality of sub-pixels included in the corresponding sub-display area.Type: GrantFiled: September 11, 2019Date of Patent: October 24, 2023Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Jiyang Shao, Yuxin Bi, Ziqiang Guo, Bingxin Liu
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Patent number: 11798505Abstract: A display device includes a plurality of divided pixels, each of which comprising a reflective electrode, a counter electrode provided so as to face the reflective electrode, and a holding unit configured to hold a potential corresponding to an expression of a gradation, and an inorganic light emitter provided on a side of the counter electrode opposite to a side of the counter electrode facing the reflective electrode, and configured to emit light toward the divided pixel.Type: GrantFiled: November 5, 2021Date of Patent: October 24, 2023Assignee: Japan Display Inc.Inventors: Akihiro Ogawa, Masanobu Ikeda, Susumu Kimura
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Patent number: 11792899Abstract: A method for fixing an initial brightness level of lights is provided. Gamma correction is performed on the light based on a dynamic Gamma curve. When a user adjusts brightness of the light based on the dynamic Gamma curve, a dynamic Gamma curve image is valid all the time when a set current brightness level n changes from 0 to N, and when x>0, the dynamic Gamma curve image is continuous, and accordingly, brightness of the light continuously changes gradually. Further, by calculating an initial brightness PWM critical duty ratio D of light sources, the dynamic Gamma curve is customized according to the light, so that an initial brightness level position of the light sources in the same model is fixed and unified.Type: GrantFiled: January 31, 2022Date of Patent: October 17, 2023Assignee: GUANGZHOU HAOYANG ELECTRONIC CO., LTD.Inventor: Weikai Jiang
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Patent number: 11776471Abstract: The invention discloses a pixel driving circuit, a driving method thereof, and a display panel. In the present invention, by adding a single-stage compensation circuit of the second data input module to the first data input module, the driving transistor is controlled by the potential generated at the first node when the first data signal and the second data signal are coupled to the first node, and the power signal is transmitted to the second node to make the light emitting element emit light, which can reduce dynamic power consumption and improve the display performance of the display panel.Type: GrantFiled: April 16, 2020Date of Patent: October 3, 2023Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Yan Xue
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Patent number: 11772491Abstract: Embodiments of a deadfront article for a display are disclosed herein. The deadfront article includes a cover structure having: an inner surface; an outer surface opposite the inner surface; a glass layer located between the inner surface and the outer surface; and a first layer of light transmitting ink or pigment located between the inner surface of the cover structure and the glass layer. The deadfront article also includes a light guide layer having: an inner surface; and an outer surface facing toward the inner surface of the cover structure. A light extraction layer located on at least one of the inner surface and the outer surface of the light guide layer.Type: GrantFiled: September 12, 2018Date of Patent: October 3, 2023Assignee: Corning IncorporatedInventors: Antoine D. Lesuffleur, Xiang-Dong Mi, Xu Ouyang, Yawei Sun
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Patent number: 11776494Abstract: A backlight driving method includes steps of: (A) receiving a piece of image data that includes a number (K) of segments, where K?2; (B) generating a piece of adjustment data that includes a number (K) of segments; each segment of the adjustment data being generated based on a respective segment of the image data and upon receipt of the respective segment of the image data; (C) generating, based on a piece of delay data and on an original synchronization control (SC) signal that has a pulse, an internal SC signal that has a number (K) of pulses; and (D) generating a backlight driving output based on the adjustment data and the internal SC signal, so as to drive a backlight source of a scan-type display to emit light.Type: GrantFiled: May 10, 2022Date of Patent: October 3, 2023Assignee: MACROBLOCK, INC.Inventors: Chang-Lin Chen, Chun-Yi Li, Wei-Chung Chen
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Patent number: 11778871Abstract: Examples are disclosed that relate to mitigating unintended OLED display emissions arising from a proximity sensor emitter located behind an OLED display panel. One example provides a display device comprising an OLED display panel, a proximity sensor having a proximity sensor emitter positioned behind one or more OLED pixels of the OLED display panel with respect to a viewing surface of the OLED display panel, and a proximity emitter mask positioned between the proximity sensor emitter and the one or more OLED pixels to shield the one or more OLED pixels from the proximity sensor emitter.Type: GrantFiled: April 19, 2021Date of Patent: October 3, 2023Assignee: Microsoft Technology Licensing, LLCInventors: Eliyahu Barel, Ying Zheng, Eran Arbel
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Patent number: 11763725Abstract: A display device of the invention includes: a pixel portion including first pixel rows connected to first scan lines and second pixel rows connected to second scan lines; a scan driver including first and second stages connected to the first scan lines and the second scan lines; and a data driver connected to the first and second pixel rows through same data lines. The first stages are connected to first clock lines, the second stages are connected to second clock lines, a first start stage of the first stages and a second start stage of the second stages are connected to a same scan start line, each first stage excluding the first start stage is connected to a first scan line of a previous first stage, and each second stage excluding the second start stage is connected to a second scan line of a previous second stage.Type: GrantFiled: April 1, 2021Date of Patent: September 19, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jae Keun Lim, Han Bit Kim, Hong Soo Kim, Jin Young Roh, Se Hyuk Park, Hyo Jin Lee
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Patent number: 11763761Abstract: An electronic device with auxiliary lighting function and an operation method thereof are provided. The electronic device includes a first body, a light-emitting module, and a processing module. The first body has a first surface. The light-emitting module is located on the first surface of the first body. The processing module is coupled to the light-emitting module, and is used to determine an operation of a first power supply mode or a second power supply mode according to a current power supply state. When the processing module is operated in the first power supply mode, the processing module dynamically adjusts an auxiliary illumination light provided by the light-emitting module according to a battery power. When the processing module is operated in the second power supply mode, the processing module dynamically adjusts the auxiliary illumination light provided by the light-emitting module according to a sensing result.Type: GrantFiled: June 16, 2021Date of Patent: September 19, 2023Assignee: COMPAL ELECTRONICS, INC.Inventors: Po-Yang Chien, Hao-Jen Fang, Wei-Yi Chang, Chun-Chieh Chen, Chen-Cheng Wang, Chih-Wen Chiang
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Patent number: 11756174Abstract: A method and system for tone-mapping an image includes determining a tone-curve based on a model of image contrast distortion between the input image and a tone-mapped image and tone-mapping the input image according to the determined tone-curve. Determining the tone curve includes analytically calculating values of the tone-curve that reduce the image contrast distortion within the model of image contrast distortion. A tone-mapping operator includes a noise model generator and a tone-mapping module operable to receive one or more contextual parameters. The tone-mapping module includes an edge-stopping filtering submodule for extracting a base layer and detail layer of the input image, a tone-curve generating submodule and a combining submodule for combining the base layer and detail layer. At least one of the edge-stopping filtering submodule, the tone-curve generating submodule and combining submodule is adjustable based on the contextual parameters.Type: GrantFiled: May 14, 2021Date of Patent: September 12, 2023Assignee: FAURECIA IRYSTEC INC.Inventors: Jonas Unger, Gabriel Eilertsen, Rafal Mantiuk
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Patent number: 11741888Abstract: Disclosed is an LED display device, a driving method and a chip thereof. The LED display device comprises: a display array comprising row lines, column lines, and pixel units each comprising an LED connected to a corresponding one of the row lines and a corresponding one of the column lines; a row driver module, connected to the row lines and providing selection signals; a column driver module, connected to the column lines and providing driving signals corresponding to gray scale data according to pulse width modulation signals; a channel control module, connected to the column lines and adjusting a column-line voltage of a corresponding column line to a target voltage in a first time period when a corresponding pulse width modulation signal is active, thus improving constant current cut-in speed and improve consistency and linearity under low gray scale when an image with low gray scale is displayed.Type: GrantFiled: February 21, 2020Date of Patent: August 29, 2023Assignee: CHIPONE TECHNOLOGY (BEIJING) CO., LTD.Inventor: Zhizheng Huang
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Patent number: 11741918Abstract: It may be desirable to implement a vignetting effect in a display. The vignetting effect causes the display to have a light-emitting area that gradually fades to a black, non-light-emitting area. The vignetting effect allows for the size and shape of the light-emitting area to be controlled while still being aesthetically pleasing to a viewer. To implement a vignetting mask for the vignetting effect, control circuitry in the electronic device may apply dimming factors to image data for the display. To avoid artifacts caused by the vignetting mask, an initial array of dimming factors for implementing the vignetting mask may have a range between ?0.5 and 1.5. After upsampling, clamping may be performed to reduce the range of the dimming factors to between 0 and 1. Ultimately, the dimming factors are applied to image data for each frame to implement the vignetting mask in each frame.Type: GrantFiled: October 26, 2021Date of Patent: August 29, 2023Assignee: Apple Inc.Inventors: Shengchang Cai, Sheng Zhang, Sterling G. Orsten, Shereef Shehata
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Patent number: 11726565Abstract: Context aware backlighting techniques include determining a focal point of a display space based on a user display context. An example backlight controller for selective backlight control of a monitor includes interface circuitry, memory, machine-readable instructions, and processor circuitry to execute the machine readable instructions to obtain a user display context relative to the monitor, the user display context based on sensor data, the sensor data to include user proximity data; determine whether to enable or disable the selective backlighting for the monitor based on the user display context; cause first backlight sections of the monitor to output at a first light intensity based on the user display context; and cause second backlight sections of the monitor to output at least one of (a) the first light intensity or (b) a second light intensity that is different than the first light intensity based on the determination.Type: GrantFiled: July 25, 2022Date of Patent: August 15, 2023Assignee: Intel CorporationInventors: Dhaval V. Sharma, Nivruti Rai, Durgesh Srivastava, Shobhit Kumar
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Patent number: 11721307Abstract: In one embodiment, a method includes accessing display timing information associated with a display, and determining, based on the display timing information, one or more rendering requirements for a plurality of portions of the display. For each portion of the display, the method may determine a current viewpoint of a user, render, based on the current viewpoint of the user, pixel values for that portion of the display in accordance with the associated rendering requirement, and send the rendered pixel values to be output by the display. The display timing information may include a waveform associated with an oscillation motion of a scanning assembly of the display, and/or a requested size for each portion of the plurality of portions of the display. The rendering requirements may include a timing interval for rendering and sending the pixel values for each of the plurality of portions of the display.Type: GrantFiled: October 30, 2019Date of Patent: August 8, 2023Assignee: Meta Platforms Technologies, LLCInventors: Larry Seiler, Warren Andrew Hunt
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Patent number: 11711958Abstract: A display panel, including: a plurality of pixels arranged in an array in a first direction and a second direction intersecting the first direction, each pixel including: a first sub-pixel having a first light-emitting zone configured to emit light of a first color; a second sub-pixel having a second light-emitting zone configured to emit light of a second color; and a third sub-pixel having a third light-emitting zone configured to emit light of a third color, wherein the plurality of pixels include a first pixel, the first light-emitting zone of the first pixel has a substantially polygonal shape, the substantially polygonal shape including: a first side substantially parallel to one side of the second light-emitting zone of the first pixel, and the one side of the second light-emitting zone of the first pixel being opposite to the first light-emitting zone; and a second side substantially parallel to one side of the third light-emitting zone of the first pixel, and the one side of the third light-emittingType: GrantFiled: April 14, 2021Date of Patent: July 25, 2023Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Liang Sun, Tuo Sun, Xiaodan Jin, Lintao Zhang
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Patent number: 11708030Abstract: A motor vehicle includes a rearview mirror display system with a visible surface and having a mirror mode and a display mode. The visible surface functions as a mirror in the mirror mode. The visible surface displays an electronically produced image in the display mode. An electronic processor is communicatively coupled to the rearview mirror display system. The electronic processor detects that the display mode is not operating properly, and, in response to the detecting, automatically switches the rearview mirror display system from the display mode to the mirror mode.Type: GrantFiled: November 18, 2021Date of Patent: July 25, 2023Assignee: Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North AmericaInventors: Padhu Kanagaraj, Stephanie Tuttle, Rachel Anderson
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Patent number: 11706855Abstract: A light emitting element driving device includes a light emitting element to emit light in response to a supply of a first current, a first switching element to turn ON/OFF the first current supplied to the light emitting element, a second switching element to turn ON/OFF a second current not supplied to the light emitting element, a constant current circuit to adjust a total current amount of the first current and the second current to be constant, and a control circuit. The control circuit turns ON the first switching element in a state of flowing the second current to the second switching element by turning ON the second switching element, and after turning ON the first switching element, flows the first current to the light emitting element and the first switching element by turning OFF the second switching element.Type: GrantFiled: June 13, 2022Date of Patent: July 18, 2023Assignee: PFU LIMITEDInventors: Shumpei Koshima, Masaaki Sakai
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Patent number: 11705044Abstract: A display device includes: a pixel part to display an image and including pixels receiving a reference voltage; a controller to determine a value of the reference voltage based on a load of the entire pixel part, and to control a grayscale range of image data according to a location in the pixel part based on the reference voltage; a data driver to supply data voltages to the pixel part through data lines based on grayscale ranges adjusted for each location in the pixel part; and a scan driver to supply a scan signal to the pixels through scan lines.Type: GrantFiled: May 13, 2021Date of Patent: July 18, 2023Assignee: Samsung Display Co., Ltd.Inventors: Jin Young Roh, Hyo Jin Lee, Jae Keun Lim, Hong Soo Kim, Se Hyuk Park
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Patent number: 11699407Abstract: A display device driving method and the display device are provided. The display device driving method determines a driving voltage value of each backlight unit based on a content to be displayed by a display unit corresponding to each backlight unit, achieving dynamic adjustment of luminous brightness of the backlight unit according to the display content of the corresponding display unit. Meanwhile, the driving voltage value is related to a noise in an image. Therefore, a better backlight brightness value can be obtained by reducing an influence of the noise on the adjustment of the luminous brightness.Type: GrantFiled: May 18, 2020Date of Patent: July 11, 2023Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Xin Zhang, Dan Cao, Tao He
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Patent number: 11670249Abstract: Disclosed is a method of controlling a backlight for of a display panel. The backlight includes backlight blocks. The display panel includes display region blocks opposite to the backlight blocks in one-to-one correspondence. The method determines, for each of the backlight blocks, a luminance value demanded from each of pixels in display region blocks including a display region block opposite to the backlight block and one or more display region blocks adjacent to the opposite display region block to the backlight block based on a luminance value of the pixel and a weight determined depending on a relation of a location of the pixel and a location of the backlight block. The method determines, for each of the backlight blocks, a highest value among the demanded luminance values for the backlight block to be a luminance value for the backlight block.Type: GrantFiled: November 8, 2021Date of Patent: June 6, 2023Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.Inventor: Kouichi Ooga
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Patent number: 11663980Abstract: In a display device and a personal immersive system and a mobile terminal system using the same, at least a part of the display panel includes a switch element configured to electrically connect adjacent sub-pixels to each other in response to a first logic value of a control signal, and electrically separate the adjacent sub-pixels from each other in response to a second logic value of the control signal, a display driver applies the second logic value of the control signal to the switch element when receiving pixel data to be written to a focal region on the display panel to which a user's gaze is directed, and applies the first logic value of the control signal to the switch element when receiving pixel data to be written to a non-focal region on the display panel.Type: GrantFiled: May 11, 2022Date of Patent: May 30, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Sun Kyung Shin, Bong Choon Kwak
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Patent number: 11662507Abstract: The invention relates to a refractive surface for blocking short- and medium-wavelength visible-spectrum radiation that affects human physiology. The refractive surface selectively absorbs short wavelengths between 380 nm and 500 nm, between a maximum and a minimum absorption threshold, and selectively absorbs medium wavelengths between 500 nm and 590 nm, between a maximum and a minimum absorption threshold, the selective absorption of short and medium wavelengths between 380 nm and 590 nm not completely blocking the passage of visible light in this range. Other embodiments include an LED screen, a software product and an electronic device, and ophthalmic, intraocular or sunglass lenses.Type: GrantFiled: June 7, 2021Date of Patent: May 30, 2023Assignees: TECNOLOGĂA SOSTENIBLE Y RESPONSABLE SL, UNIVERSIDAD COMPLUTENSE DE MADRIDInventors: Celia Sanchez Ramos, Nilo Garcia Manchado
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Patent number: 11662785Abstract: In one embodiment, a method for managing thermal dissipation in a display of an information handling system includes: emitting, by a light source of the display, a visible light within the display, the visible light associated with a heat within the display; receiving, by an absorption layer of the display, the visible light within the display, the absorption layer coupled to a display cover of the display; absorbing, by the absorption layer, a portion of the visible light comprising a light leakage from the display; absorbing, by the absorption layer, a portion of the heat within the display; and transferring, by the absorption layer, the portion of the heat into the display cover.Type: GrantFiled: July 15, 2021Date of Patent: May 30, 2023Assignee: Dell Products L.P.Inventors: Deeder Aurongzeb, Andrew T. Sultenfuss
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Patent number: 11651748Abstract: A driving method of a display device includes supplying a pixel with a first light emission stop pulse having a first pulse width during a first frame that is driven at a first frequency; supplying the pixel with a second light emission stop pulse having a second pulse width during a second frame that is driven at a second frequency; and supplying the pixel with a third light emission stop pulse having a third pulse width during a third frame that is driven at the second frequency. The first frequency is different from the second frequency. The second pulse width is between the first pulse width and the third pulse width.Type: GrantFiled: December 27, 2021Date of Patent: May 16, 2023Assignee: Samsung Display Co., Ltd.Inventor: Ju Bong An
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Patent number: 11650452Abstract: Disclosed are display devices and methods of fabricating the same. The display device comprises a display panel, an optical layer on the display panel, and a backlight unit that is below the display panel and provides the display panel with light. The optical layer includes a plurality of optical fiber segments, and an air layer between the optical fiber segments. The light generated from the backlight unit is provided to the optical fiber segments through the display panel, and the light is diffused by the optical fiber segments and an air layer dispersed among the optical fiber segments.Type: GrantFiled: June 18, 2020Date of Patent: May 16, 2023Assignee: Samsung Display Co., Ltd.Inventors: Juyoun Son, Dohun Kim, Jieun Nam, Jae Sul An, Kise Lee, Young-keun Lee