公开(公告)号：US20240355300A1

公开(公告)日：2024-10-24

申请号：US17926636

申请日：2022-01-13

申请人： Analogix (Suzhou) Semiconductor Co., LTD. ,  ANALOGIX INTERNATIONAL LLC

发明人： Lin CHENG ,  Qinghong LAI ,  Shan WANG ,  Jialian WU

IPC分类号： G09G3/34 ,  G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3426 ,  G09G3/2007 ,  G09G3/3607 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0673 ,  G09G2320/0686

摘要： The disclosure discloses an image display method, an image display device and a display system. The method includes: according to a image to be displayed, determining a maximum brightness value of pixel points in a panel partition to obtain a backlight brightness value corresponding to a backlight partition; acquiring a light diffusion curve of the backlight of the backlight partition incident on the panel partition corresponding to the backlight partition; calculating a compensation ratio of a target pixel to the light diffusion curve, the compensation ratio is a ratio of the maximum brightness value to an actual brightness value; calculating a pixel compensation value of the target pixel according to the image to be displayed and the compensation ratio; adjusting a pixel value of the target pixel point according to the pixel compensation value.

公开(公告)号：US12118959B2

公开(公告)日：2024-10-15

申请号：US18136299

申请日：2023-04-18

申请人： Samsung Display Co., Ltd.

发明人： Su Bin Kim ,  Se Byung Chae

IPC分类号： G09G5/10 ,  G09G3/20 ,  G09G3/3275 ,  G09G3/36 ,  G06F1/3234 ,  G09G3/3208

CPC分类号： G09G5/10 ,  G06F1/3265 ,  G09G3/2007 ,  G09G3/3208 ,  G09G3/3275 ,  G09G3/3696 ,  G09G2310/0267 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/028 ,  G09G2340/0435

摘要： A display device including a display panel including a scan line, a data line, and a pixel connected thereto, a gate driver, and a source driver including a gamma voltage generator to generate gamma voltages having different voltage levels, a digital-to-analog converter to generate the data voltage corresponding to a gray scale value using the gamma voltages, and a source buffer, in which the gamma voltage generator includes a first resistor string to set a voltage range of the gamma voltages, a second resistor string to set tab gamma voltages corresponding to some of the gamma voltages within the voltage range, gamma buffers to output the tab gamma voltages, and a third resistor string including tabs respectively connected to output terminals of the gamma buffers, the third resistor string being configured to divide a voltage between the tabs to generate the gamma voltages.

公开(公告)号：US20240339073A1

公开(公告)日：2024-10-10

申请号：US18655639

申请日：2024-05-06

申请人： CreeLED, Inc.

发明人： Christopher P. Hussell

IPC分类号： G09G3/32 ,  G09G3/20

CPC分类号： G09G3/32 ,  G09G3/2096 ,  G09G2320/0233 ,  G09G2320/041 ,  G09G2320/064 ,  G09G2320/0673 ,  G09G2360/16 ,  G09G2370/00

摘要： Light-emitting diode (LED) packages and, more particularly, LED packages with transformation and shifting of pulse width modulation (PWM) signals and related methods are disclosed. Discrete LED packages are arranged for cascade communication. Each LED package includes one or more LED chips, and each LED package is separately capable of receiving communication from a data stream, controlling operation of the one or more LED chips, and performing transformation and shifting of received PWM signals. Transformation may include compression and/or decompression of received PWM signals by each LED package to provide increased accessible dynamic range. After transformation, LED packages are capable of shifting transformed values to compensate for turn-on delay of LED chips, thereby reducing light drop-off problems at low intensity levels.

公开(公告)号：US12112684B2

公开(公告)日：2024-10-08

申请号：US18217613

申请日：2023-07-03

申请人： HKC CORPORATION LIMITED

发明人： Mancheng Zhou ,  Haijiang Yuan

IPC分类号： G09G3/36 ,  G09G3/20 ,  G09G3/3225 ,  G09G3/3258

CPC分类号： G09G3/2096 ,  G09G3/3225 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2320/0666 ,  G09G2320/0673

摘要： A gamma voltage generator, a display device, and a driving method of a display panel. The gamma voltage generator includes a control module, a data storage module, a digital-to-analog conversion module, and an output module which are electrically connected in sequence. The data storage module includes at least a first data memory and a second data memory. The first memory is configured to store and output a first digital signal to enable the output module to output a first gamma voltage in a first operating phase of the display panel. The second memory is configured to store and output a second digital signal to enable the output module to output a second gamma voltage in a second operating phase of the display panel. The first operating phase and a second operating phase are divided in accordance with a chronological order.

公开(公告)号：US20240321165A1

公开(公告)日：2024-09-26

申请号：US18406102

申请日：2024-01-06

申请人： Samsung Display Co., LTD.

发明人： Junho HWANG ,  Yoongyu LEE ,  Sunjoon HWANG

IPC分类号： G09G3/20 ,  G09G3/3225

CPC分类号： G09G3/2007 ,  G09G3/3225 ,  G09G2320/0285 ,  G09G2320/0626 ,  G09G2320/0666 ,  G09G2320/0673 ,  G09G2320/0693 ,  G09G2360/16

摘要： A gamma correction apparatus for a display device, includes: a measurer configured to measure an optical characteristic of a display panel; and a gamma data generator configured to generate measurement gamma data for at least one measurement gray level pre-determined from among a plurality of gray levels, based on the optical characteristic received from the measurer, generate prediction gamma data for at least one prediction gray level other than the at least one measurement gray level from among the plurality of gray levels by using an equation defining a relationship between a gray level and an optical characteristic, and generate gray level-wise gamma data, based on the measurement gamma data and the prediction gamma data.

公开(公告)号：US12087236B2

公开(公告)日：2024-09-10

申请号：US17863230

申请日：2022-07-12

申请人： LG DISPLAY CO., LTD.

发明人： Wonsuk Lee ,  Hyunjae Lee

IPC分类号： G09G3/3275 ,  G09G3/20 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

CPC分类号： G09G3/3275 ,  G09G3/2074 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0413 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/064 ,  G09G2320/0673 ,  G09G2320/0686

摘要： Discussed is a display device including a display panel including first and second display areas that differ in the number of sub-pixels per unit area, a data driver that generates data voltages, and supplies the data voltages to the sub-pixels in the corresponding areas, and a power supply part that generates first display area high-potential power for the first display area and second display area high-potential power for the second display area, and supplies the first and second display area high-potential powers to the corresponding display areas. Each of the sub-pixels includes a switching transistor connected to a gate line and a data line, and a pixel circuit including a driving transistor that is turned on in response to a data voltage stored in a storage capacitor, and supplies a driving current to an organic light-emitting diode positioned between a first power line and a second power line.

公开(公告)号：US12073760B2

公开(公告)日：2024-08-27

申请号：US18453658

申请日：2023-08-22

申请人： WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

发明人： Bojia Lyu

IPC分类号： G09G3/20

CPC分类号： G09G3/2074 ,  G09G3/2022 ,  G09G2310/08 ,  G09G2320/0673 ,  G09G2330/021

摘要： A method and a device for driving a display panel, and a display device are provided. The method including dividing a frame into N sub-frames, the N sub-frames corresponding to N sets of first gamma curves respectively, and the N sub-frames including at least two consecutive first sub-frames; obtaining a display grayscale of a sub-pixel in each first sub-frame based on an original grayscale of a sub-pixel in a frame image to be displayed, a set of second gamma curves, and one set of first gamma curves corresponding to the first sub-frame; and driving the display panel to display sub-frame images sequentially during the N sub-frames. A display voltage of the sub-pixel when the display panel displays one sub-frame image during one first sub-frames is obtained based on the set of second gamma curves and the display grayscale of the sub-pixel in the first sub-frame.

公开(公告)号：US12067931B2

公开(公告)日：2024-08-20

申请号：US18116788

申请日：2023-03-02

申请人： Samsung Display Co., Ltd.

发明人： Hyongdo Choi ,  Hyangwon Moon ,  Yun-Nam Kim

IPC分类号： G09G3/32

CPC分类号： G09G3/32 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2330/028

摘要： Disclosed is a display device including a display panel. The device includes a reference voltage generator, a controller, and a data driver. The controller is configured to receive an input image signal and a dimming value, convert the dimming value into the dimming control signal, and convert the input image signal into image data. The reference voltage generator is configured to receive the dimming control signal and output a correction reference voltage by correcting at least one of a first gamma reference voltage and a second gamma reference voltage based on the dimming control signal. The data driver is configured to receive the correction reference voltage, generate gamma voltages based on the correction reference voltage, convert the image data into data voltages based on the gamma voltages, and output the data voltages to a display panel with pixels.

公开(公告)号：US12014699B2

公开(公告)日：2024-06-18

申请号：US16461366

申请日：2019-02-20

申请人： HKC CORPORATION LIMITED

发明人： HuaiLiang He

IPC分类号： G09G3/36

CPC分类号： G09G3/3688 ,  G09G3/3614 ,  G09G3/3677 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0673

摘要： The present application discloses a display panel, a display panel driving method, and a display device. Each row of pixels includes a plurality of pixel groups, and each pixel group includes a first column of pixels and a second column of pixels which are adjacent; the first column of pixels and the second column of pixels are connected to a same data line; the first column of pixels is connected with a 2n−1th row of scanning lines, and the second column of pixels is connected with a 2nth row of scanning lines; a source driver outputs a driving voltage to each column of pixels, where for a same gray scale value, a driving voltage corresponding to the first column of pixels of at least one column is smaller than a driving voltage corresponding to the second column of pixels.

公开(公告)号：US12008967B2

公开(公告)日：2024-06-11

申请号：US18308070

申请日：2023-04-27

申请人： SAMSUNG DISPLAY CO., LTD.

发明人： Deokhwa Woo ,  Jeonkyoo Kim ,  Kuk-Hwan Ahn ,  Myungwoo Lee ,  Bitna Lee ,  Manseung Cho

IPC分类号： G09G3/3275 ,  H10K59/121 ,  H10K59/65

CPC分类号： G09G3/3275 ,  H10K59/121 ,  H10K59/65 ,  G09G2300/0452 ,  G09G2300/0842 ,  G09G2320/0646 ,  G09G2320/0673 ,  G09G2360/16

摘要： A display device includes a display panel with a first display area having a first light transmittance and a second display area having a second light transmittance higher than the first light transmittance. The display device also includes a driving controller which divides an image signal into a first image signal corresponding to a first pixel unit in the first display area and a second image signal corresponding to a second pixel unit and a non-pixel unit adjacent to the second pixel unit. The display controller calculates the second image signal with a preset kernel matrix, and outputs a data signal corresponding to the second pixel unit in the second display area.