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公开(公告)号：US20160232848A1
公开(公告)日：2016-08-11
申请号：US14907448
申请日：2015-09-16
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Danna Song
IPC: G09G3/32
CPC classification number: G09G3/3258 , G09G3/2014 , G09G2310/08 , G09G2360/16
Abstract: Embodiments of the present disclosure relate to a technical field of display technology, and provide a driving method for a pixel circuit and a driving device thereof. A problem of cost increase can be solved which is caused by an increase in a number of storages when adjustment is made by way of Gamma curve and table lookup, by means of the technical solutions according to embodiments of the present disclosure. The driving method of the pixel circuit includes acquiring brightness information of a display screen in a light-emitting phase (S101); determining a duty cycle of a pulse signal according to the brightness information (S102); inputting a high level to the first voltage terminal, and inputting the pulse signal with the duty cycle to a gate of the first switching transistor by the first gate line (S103).
Abstract translation: 本公开的实施例涉及显示技术的技术领域，并且提供用于像素电路及其驱动装置的驱动方法。 可以通过根据本公开的实施例的技术方案，通过伽马曲线和表查找进行调整时由于存储器数量的增加而引起的成本增加的问题。 像素电路的驱动方法包括获取发光阶段的显示画面的亮度信息（S101）。 根据亮度信息确定脉冲信号的占空比（S102）; 向第一电压端子输入高电平，并且通过第一栅极线将具有占空比的脉冲信号输入到第一开关晶体管的栅极（S103）。
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公开(公告)号：US12148374B2
公开(公告)日：2024-11-19
申请号：US17779141
申请日：2021-07-21
Inventor： Xiaolong Wei , Song Meng , Jingbo Xu , Pan Li , Wenchao Bao
IPC: G09G3/3233 , G09G3/20
Abstract: A control device includes a memory and a processor. The memory is configured to store a time comparison table. The processor is configured to determine whether a displayed image is a still image. When the displayed image is determined to be a still image, the time comparison table is queried for a corresponding still image judgment duration according to an average pixel level and a type of the still image.
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公开(公告)号：US12087235B2
公开(公告)日：2024-09-10
申请号：US17781776
申请日：2021-05-28
Inventor： Song Meng , Jingbo Xu , Jianbo Xian
IPC: G09G5/10 , G09G3/3233 , G09G3/3275
CPC classification number: G09G3/3275 , G09G3/3233 , G09G2300/0819 , G09G2300/0842 , G09G2310/08 , G09G2320/0233
Abstract: An organic light-emitting diode display panel and a sensing method and a driving method therefor are provided. The organic light-emitting diode display panel includes a plurality of pixel units arranged in an array, each pixel unit includes a plurality of sub-pixels, and at least two sub-pixels are connected to a same sensing signal line. The sensing method includes: sequentially applying sensing data signals to the sub-pixels in the organic light-emitting diode display panel, and sequentially outputting sensing signals through sensing signal lines, to sense the sub-pixels, so as to compensate the sub-pixels. Among the sub-pixels connected to the same sensing signal line, sub-pixels, other than a sub-pixel which is currently sensed, are applied with a zero-gray-scale data signal.
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公开(公告)号：US11263969B2
公开(公告)日：2022-03-01
申请号：US16937486
申请日：2020-07-23
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Fei Yang , Song Meng , Xiaolong Wei
IPC: G09G3/3208 , G09G3/3258 , G09G3/3266 , G09G3/3275
Abstract: A pixel circuit, a parameter detection method, a display panel and a display device are provided. The pixel circuit includes a data writing-in circuit, a driving circuit, a reset control circuit, a detection control circuit, and a light emitting element. The detection control circuit is configured to control the connection or disconnection between the first electrode of the light emitting element and the sensing line under the control of a detection control signal provided by the detection control line. The reset control circuit is configured to control the connection or disconnection between the first electrode of the light emitting element and the second electrode of the light emitting element under the control of a reset control signal provided by the reset control line.
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公开(公告)号：US11257434B2
公开(公告)日：2022-02-22
申请号：US16768638
申请日：2019-12-11
Inventor： Haixia Xu , Zhongyuan Wu , Zhidong Yuan , Song Meng
IPC: G09G3/30 , G09G3/3258 , G09G3/00 , G09G3/3291
Abstract: A method and a device for compensating a display device and a display apparatus are provided, each pixel unit includes a pixel driving circuit and a light-emitting element, the pixel driving circuit includes a driving transistor and sensing line, the method includes: acquiring a first mobility and a first threshold voltage of the driving transistor, the first mobility and the first threshold voltage are acquired when the display device is not displaying; acquiring a second mobility of the driving transistor according to the electrical signal on the sensing line, the second mobility is acquired when the display device is displaying; determining a second threshold voltage of the driving transistor according to the first threshold voltage, a difference between the second mobility and the first mobility, and a compensation factor; and calculating an external compensation value of a display data signal according to the second threshold voltage and the second mobility.
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Patent Agency Ranking
公开(公告)号：US11074868B2
公开(公告)日：2021-07-27
申请号：US16823680
申请日：2020-03-19
Inventor： Zhidong Yuan , Yongqian Li , Can Yuan , Song Meng
IPC: G09G3/325 , G09G3/3291 , G09G3/3266
Abstract: Embodiments of the present disclosure provide a pixel circuit, a display panel, and a display device. The pixel circuit includes: a first transistor; a light emitting unit, a cathode being grounded; a second transistor; a third transistor; a fourth transistor; and a capacitor, a first terminal being coupled to the control electrode of the third transistor, and a second terminal being coupled to the second electrode of the third transistor.
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17.发明申请公开(公告)号：US20210225277A1
公开(公告)日：2021-07-22
申请号：US16094442
申请日：2018-03-01
Inventor： Haixia Xu , Song Meng , Yue Wu , Wenchao Bao , Min He
IPC: G09G3/3233
Abstract: A compensation method and a compensation apparatus for an organic light-emitting display, and a display device are disclosed. The compensation method includes: determining a write-back voltage of each sub-pixel to be compensated in a row to be compensated in a current frame according to a data voltage and a gain value of the sub-pixel to be compensated in the row to be compensated in the current frame, the gain value being greater than 1; and respectively writing back the write-back voltage of each sub-pixel to be compensated in the row to be compensated in the current frame correspondingly to the sub-pixel to be compensated in the row to be compensated in scan time of a blank period of the current frame.
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18.发明授权公开(公告)号：US10573245B2
公开(公告)日：2020-02-25
申请号：US15537724
申请日：2016-10-18
Applicant: BOE Technology Group Co., Ltd.
Inventor： Quanhu Li , Yongqian Li , Song Meng
IPC: G09G3/3266 , G11C19/28 , G11C19/18 , G09G3/36
Abstract: A shift register unit and a driving method thereof, shift register and display device. The shift register unit including an input circuit (P1), a pull-down control circuit (P2), a pull-up control circuit (P3), a pull-up circuit (P4) and a pull-down circuit (P5); wherein the input circuit (P1) is connected to a first trigger signal end (STU), a first clock signal end (CLK1), a power level end (VGL) and a pull-up control node (Q), and is for utilizing a bootstrap effect to transfer a signal of the first trigger signal end (STU) to the pull-up control node (Q) without a threshold voltage loss. The shift register unit is for use in a display device, and resolves the problem of a display device having a non-uniform display, resulting in a poor displaying effect of a display device.
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公开(公告)号：US10204557B2
公开(公告)日：2019-02-12
申请号：US15307611
申请日：2016-01-13
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Danna Song , Zhongyuan Wu , Szu Heng Tseng , Song Meng
IPC: G09G3/3258 , G09G3/20 , G09G3/3233
Abstract: An Active-Matrix Organic Light Emitting Diode (AMOLED) display apparatus and a brightness compensation method thereof are provided. At an initial compensation stage, a display screen can be subjected to brightness calibration by an image sensor so as to acquire a data voltage compensation value of each sub-pixel when a brightness value of a display panel equals a preset value, a first data voltage is output to a corresponding pixel circuit according to the data voltage compensation value of each sub-pixel, a sensed voltage of each sub-pixel at this stage is used as an initial reference voltage of each sub-pixel when the brightness value of the display panel equals the preset value; and at a subsequent compensation stage, by regulating a data voltage of each sub-pixel, the sensed voltage of each sub-pixel is made to be equal to the corresponding initial reference voltage when the brightness value of the display panel equals the preset value, so as to achieve uniform compensation on brightness of each sub-pixel at the subsequent compensation stage. Thus, not only are uniformity and accuracy of initial brightness compensation improved, but also pixel aging is accurately compensated and uniformity and accuracy of subsequent compensation are improved.
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公开(公告)号：US20180277043A1
公开(公告)日：2018-09-27
申请号：US15537724
申请日：2016-10-18
Applicant: BOE Technology Group Co., Ltd.
Inventor： Quanhu Li , Yongqian Li , Song Meng
IPC: G09G3/3266 , G09G3/36 , G09G3/34 , G11C19/28
Abstract: A shift register unit and a driving method thereof, shift register and display device. The shift register unit including an input circuit (P1), a pull-down control circuit (P2), a pull-up control circuit (P3), a pull-up circuit (P4) and a pull-down circuit (P5); wherein the input circuit (P1) is connected to a first trigger signal end (STU), a first clock signal end (CLK1), a power level end (VGL) and a pull-up control node (Q), and is for utilizing a bootstrap effect to transfer a signal of the first trigger signal end (STU) to the pull-up control node (Q) without a threshold voltage loss. The shift register unit is for use in a display device, and resolves the problem of a display device having a non-uniform display, resulting in a poor displaying effect of a display device.
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