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公开(公告)号：US11238800B2
公开(公告)日：2022-02-01
申请号：US16957043
申请日：2020-01-22
Inventor： Min He , Wenchao Bao , Chun Cao , Wei Chen
IPC: G09G3/3258
Abstract: The present disclosure provides a set-voltage generation unit, a set-voltage generation method and a display device. The set-voltage generation unit includes a voltage generation circuit. The set-voltage generation unit is configured to generate a set voltage according to a gamma main voltage such that a ratio between a variation of the set voltage and a variation of the gamma main voltage is a voltage coefficient K, and K is a positive number less than or equal to 1.
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12.发明授权公开(公告)号：US10403187B2
公开(公告)日：2019-09-03
申请号：US15720038
申请日：2017-09-29
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Dongxu Han , Tieshi Wang , Pan Xu , Wenchao Bao , Chi Zhang , Zhongyuan Wu
Abstract: A gamma voltage debugging method for an electroluminescent display device, including: turning on sub-pixels in a test region to a maximum luminance value, and recording a driving current of an electroluminescent element at this time as a maximum reference current; calculating reference current values corresponding to respective gray scales according to the maximum reference current and a preset formula; and driving the sub-pixels in the test region to emit light, and for each driving current equal to a reference current value, recording a driving voltage value corresponding to the gray scale value as a gamma voltage resulted from the debugging.
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公开(公告)号：US12288516B2
公开(公告)日：2025-04-29
申请号：US18257385
申请日：2022-06-24
IPC: G09G3/3225 , G02F1/1345 , G09G3/32 , G09G3/36 , H10K59/126 , H10K59/131
Abstract: A display module includes a display panel, at least one bonding circuit board, a plurality of chip-on-films, and a plurality of buffer devices. The at least one bonding circuit board each include first differential lines, and a first differential line includes a P-polarity differential sub-line and an N-polarity differential sub-line. An end of a chip-on-film is connected to the first differential line, and the other end of the chip-on-film is connected to the display panel. The buffer devices are arranged on the bonding circuit board, a buffer device is connected to ends, proximate to the chip-on-film, of the P-polarity differential sub-line and the N-polarity differential sub-line, and the buffer device is configured to reduce signal reflection between the first differential line and the chip-on-film.
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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：US11200827B2
公开(公告)日：2021-12-14
申请号：US16429830
申请日：2019-06-03
Inventor： Wenchao Bao , Xiaolong Wei , Dongxu Han
Abstract: A chromaticity compensation method, a chromaticity compensation device and a storage medium are disclosed. The chromaticity compensation method includes that, according to a preset standard chromaticity value and measured chromaticity values corresponding to a plurality of sub-display regions in a display region, chromaticity compensation values of the sub-display regions are determined, and the display region is divided into the plurality of sub-display regions in close arrangement, and each of the sub-display regions includes a plurality of sub-pixels; a data smoothing treatment is performed between the chromaticity compensation values of the sub-display regions that are adjacent, so as to determine the smoothed chromaticity compensation values of the sub-pixels in the sub-display regions; and upon display, chromaticity compensation of the sub-pixels are performed by adopting the smoothed chromaticity compensation values.
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Patent Agency Ranking
公开(公告)号：US11107407B2
公开(公告)日：2021-08-31
申请号：US16620681
申请日：2017-12-15
Inventor： Haixia Xu , Yue Wu , Can Yuan , Wenchao Bao
IPC: G09G3/3258 , G09G3/3266 , G09G3/3275
Abstract: Embodiments of the present disclosure provide a method for driving a pixel circuit, a pixel circuit, and a display panel. In this method, a zero-voltage signal is provided to a data signal terminal. A first ON signal is provided to a first scan signal terminal, a second ON signal is provided to a second scan signal terminal, and a first level data signal or the zero-voltage signal is provided to the data signal terminal. Next, a decreased data signal, a second level data signal and the zero-voltage signal are provided to the data signal terminal.
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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：US10699643B2
公开(公告)日：2020-06-30
申请号：US16334114
申请日：2018-01-04
Inventor： Can Yuan , Zhidong Yuan , Yongqian Li , Pan Xu , Wenchao Bao , Min He
IPC: G09G3/3233 , G09G3/3258 , G09G3/3275
Abstract: The present disclosure relates to a pixel driving compensation circuit. The pixel driving compensation circuit can detect and compensate a driving current of a sub-pixel in a pixel unit. The pixel unit includes first, second, and third sub-pixels and the first to third sub-pixels respectively include first, second, and third driving transistors. The pixel driving compensation circuit includes a first switching sub-circuit configured to be turned on in a first period to transmit a driving current output from the first driving transistor to a first detection line, second switching sub-circuit configured to be turned on in a second period to transmit a driving current output from the second driving transistor to a first detection line, and a third switching sub-circuit configured to be turned on in the first period to transmit a driving current output from the third driving transistor to a second detection line.
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公开(公告)号：US10553151B2
公开(公告)日：2020-02-04
申请号：US15983939
申请日：2018-05-18
Inventor： Haixia Xu , Wenchao Bao
IPC: G09G3/3208 , G09G3/20
Abstract: Embodiments of the present disclosure disclose a current control method and an apparatus thereof. The current control method includes: generating a correspondence between grayscale brightness and a current of a display panel; detecting, in a blank interval of a display period, an actual current value and an actual grayscale brightness of the display panel; determining a target current value by looking up a correspondence between the grayscale brightness and the current according to a target grayscale brightness of the display panel; and adjusting, based on a comparison of the actual current value and the target current value, the actual grayscale brightness so that the actual current value is less than or equal to the target current value.
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20.发明申请公开(公告)号：US20190371245A1
公开(公告)日：2019-12-05
申请号：US16334114
申请日：2018-01-04
Inventor： Can Yuan , Zhidong Yuan , Yongqian Li , Pan Xu , Wenchao Bao , Min He
IPC: G09G3/3258 , G09G3/3233 , G09G3/3275
Abstract: The present disclosure relates to a pixel driving compensation circuit. The pixel driving compensation circuit can detect and compensate a driving current of a sub-pixel in a pixel unit. The pixel unit includes first, second, and third sub-pixels and the first to third sub-pixels respectively include first, second, and third driving transistors. The pixel driving compensation circuit includes a first switching sub-circuit configured to be turned on in a first period to transmit a driving current output from the first driving transistor to a first detection line, second switching sub-circuit configured to be turned on in a second period to transmit a driving current output from the second driving transistor to a first detection line, and a third switching sub-circuit configured to be turned on in the first period to transmit a driving current output from the third driving transistor to a second detection line.
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