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公开(公告)号：US12100362B2
公开(公告)日：2024-09-24
申请号：US17980939
申请日：2022-11-04
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Minhoon Lee
CPC classification number: G09G3/3426 , G09G3/32 , G09G2310/0213 , G09G2310/0267 , G09G2310/08 , G09G2320/064 , G09G2330/02 , G09G2340/0435
Abstract: A display device includes a backlight, a pixel controlling unit, a power driving unit, a source driving unit which transmits, to the pixel controlling unit, intensities of the LEDs connected to the pixel controlling unit, and a timing controlling unit. The pixel controlling unit adjusts, in a first time section, an intensity of a first LED based on a first intensity received from the source driving unit, wherein the first LED is connected to a first line which is activated by the power driving. The pixel controlling unit adjusts, in a second time section different from the first time section, an intensity of a second LED based on a second intensity received from the source driving unit, wherein the second LED is connected to a second line which is activated by the power driving unit.
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公开(公告)号：US12087251B2
公开(公告)日：2024-09-10
申请号：US17826587
申请日：2022-05-27
Applicant: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Inventor： Rui Guo , Zhaonan Liu
CPC classification number: G09G5/10 , G09G3/32 , G09G2320/041 , G09G2320/064 , G09G2320/0653
Abstract: A method and an apparatus for controlling display screen, and a storage medium are provided. The method includes: acquiring temperature information of a target region of a display control chip, in which the display control chip is configured to control display of a display screen by controlling display of a LED light plate of a display module of an electronic device; adjusting brightness of the display screen of the electronic device according to the temperature information of the target region.
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公开(公告)号：US12073757B2
公开(公告)日：2024-08-27
申请号：US18165054
申请日：2023-02-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Cheng-Chieh Lien , Akira Sakaigawa
CPC classification number: G09G3/2011 , G09G3/32 , G09G2310/08 , G09G2320/064 , G09G2360/16
Abstract: The present invention provides an operating method of a display device. An example operating method includes driving each pixel for each frame, wherein a plurality of pixels of the display device are disposed in an array of rows and columns, a period of one frame comprises one or more data sections and one or more off-sections, ratios of time length of the one or more data sections are substantially the same as a sequence of powers of 2, each of the one or more data sections corresponds to an ON period or an OFF period related to a specified brightness, grey scale color, or luminance, and each of the one or more off-sections corresponds to the OFF period unrelated to the specified brightness, grey scale color, or luminance.
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公开(公告)号：US20240274064A1
公开(公告)日：2024-08-15
申请号：US18436388
申请日：2024-02-08
Applicant: X Display Company Technology Limited
Inventor： Imre Knausz , Ronald S. Cok
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2300/06 , G09G2320/0247 , G09G2320/0266 , G09G2320/064 , G09G2330/021
Abstract: A hybrid display includes pixel clusters and a display controller operable to provide pixel values to the cluster controllers. Each pixel cluster incudes (i) pixels; (ii) a pixel memory for storing fewer than two pixel values for each of the pixels; and (iii) a cluster controller operable to (a) control the pixels to emit light corresponding to the pixel values, (b) receive pixel values, and (c) store the pixel values in the pixel memory. The pixel values are digital values and each of the cluster controllers is operable to receive pixel values from the display controller and store the pixel values in the pixel memory at the same time that the cluster controller controls the pixels to emit light corresponding to the pixel values.
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公开(公告)号：US12062316B2
公开(公告)日：2024-08-13
申请号：US18320669
申请日：2023-05-19
Applicant: LX SEMICON CO., LTD.
Inventor： Hyeong Seok Kim
CPC classification number: G09G3/2092 , G09G5/008 , G09G2310/08 , G09G2320/064 , G09G2320/0693
Abstract: Disclosed are a display driving circuit and a frequency correction method of the display driving circuit, capable of quickly correcting a frequency change of a clock signal when a display device is driven at a low scan rate.
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公开(公告)号：US20240249684A1
公开(公告)日：2024-07-25
申请号：US18599481
申请日：2024-03-08
Inventor： Yuqi HU , Yingteng ZHAI , Jiaxian LIU , Tianyi WU , Feng QIN
IPC: G09G3/3233
CPC classification number: G09G3/3233 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2310/08 , G09G2320/064 , G09G2340/0435
Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes an amplitude modulation subcircuit and a pulse width modulation subcircuit, and the amplitude modulation subcircuit and the pulse width modulation subcircuit each includes a drive transistor. A working process of at least one of the amplitude modulation subcircuit or the pulse width modulation subcircuit includes a bias stage. A bias adjustment signal is provided to the drive transistor during the bias stage, and the bias adjustment signal is configured to adjust the bias state of the drive transistor.
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公开(公告)号：US20240203369A1
公开(公告)日：2024-06-20
申请号：US18085385
申请日：2022-12-20
Applicant: V-Silicon Semiconductor (Hefei) Co., Ltd
Inventor： Erwin Bellers , Johannes Gerardus Rijk van Mourik
IPC: G09G3/34 , G02F1/13357
CPC classification number: G09G3/3426 , G02F1/133603 , G09G2320/064 , G09G2320/0646 , G09G2360/16
Abstract: A method of operating a backlight comprises: receiving an input video; analyzing characteristics of the input video within a plurality of predefined spatial windows having one or more light emitting diodes to generate required light levels; generating backlight drive levels per spatial window to reduce the backlight in a first set of the plurality of the predefined spatial windows; and driving the backlight according to the generated backlight drive levels.
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公开(公告)号：US20240203321A1
公开(公告)日：2024-06-20
申请号：US18217268
申请日：2023-06-30
Applicant: Stereyo BV
Inventor： Robbie THIELEMANS , Vince DUNDEE
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2310/08 , G09G2320/064 , G09G2320/068 , G09G2320/0693 , H04N5/222
Abstract: The invention relates to a light source display, comprising a plurality of light-emitting elements (LEEs), such as for example LEDs, being arranged on a horizontal and vertical grid resulting in an array or a matrix of LEEs or LEDs forming a LEE or LED board. More particularly, the invention relates to a display with a drive circuit configuration comprising at least two drive circuits, wherein at least one of the LEEs or LEDs driven by a first driver of a first drive circuit is residing physically with a second drive circuit. Herewith, improved visual performance of the display can be achieved, as well as improved interplay of the display with a camera recording an image from the display, or else the display can be enhanced for 3D application.
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公开(公告)号：US12008836B2
公开(公告)日：2024-06-11
申请号：US18313138
申请日：2023-05-05
Applicant: Google LLC
Inventor： Hyunchul Kim , Chien-Hui Wen
IPC: G06V40/13 , G09G3/3208
CPC classification number: G06V40/1318 , G09G3/3208 , G09G2320/0633 , G09G2320/064
Abstract: This document describes systems and techniques for spatially and temporally dynamic illumination for fingerprint authentication. In aspects, a method is disclosed that involves receiving user input at a display of an electronic device, initiating biometric authentication, and instructing a display-driver integrated circuit (DDIC) to implement a local high-brightness mode, which causes a predetermined portion of the display to increase in luminance to a target luminance for at least a first interval and a second interval. The DDIC is also instructed to cause a variable portion of the display to increase in luminance for the first interval and, at the expiration of the first interval, decrease luminance. During the first and/or second interval, an under-display fingerprint sensor captures one or more images. It is then determined, based on analysis of the one or more images, whether the user input is indicative of an authorized user.
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公开(公告)号：US11984087B2
公开(公告)日：2024-05-14
申请号：US16918846
申请日：2020-07-01
Applicant: LG ELECTRONICS INC.
Inventor： Yeonoh Nam , Kyuyong Chung , Jongmin Lee
IPC: G09G3/34
CPC classification number: G09G3/3426 , G09G2320/064
Abstract: Provided are a display device and an operating method thereof. The display device includes a liquid crystal display panel, a backlight unit including a plurality of light sources for supplying light to the liquid crystal display panel and driven in a state of being divided into a plurality of blocks corresponding to the number of the light sources, and a backlight dimming controller configured to calculate dimming values of the plurality of blocks. The backlight dimming controller is configured to divide each of the plurality of blocks into a plurality of unit blocks and control brightness of an output image differently for each of the unit blocks.
