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公开(公告)号：US11238795B2
公开(公告)日：2022-02-01
申请号：US17259702
申请日：2020-06-24
IPC: G09G3/3233 , G09G3/3275 , G09G3/32
Abstract: A method for controlling a charging time of a display panel includes: during t0+kΔt in a (k+1)-th blanking time, writing a data voltage to a gate of a driving transistor, and detecting a voltage Vk_(j,i) of a second electrode of the driving transistor; during a t0+(k+r)Δt in a (k+1+r)-th blanking time, writing the data voltage to the gate of the driving transistor, and detecting a voltage Vk+1_(j,i) of the second electrode of the driving transistor; determining whether ΔVj,i=Vk+1_ji−Vk_ji is less than or equal to a target voltage difference VT; if ΔVj,i≤VT, taking the T=t0+kΔt as an expected charging time of a sub-pixel; if ΔVj,i>VT, cyclically performing the charging step described above to obtain ΔVj,i=Vk+p+1_(j,i)−Vk+p_(j,i), and comparing ΔVj,i with the target voltage difference VT, until ΔVj,i≤VT, taking t0+(k+p+r−1)Δt as the expected charging time of the sub-pixel. p is taken from 1, and increases by 1 for each cycle.
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公开(公告)号：US11138935B2
公开(公告)日：2021-10-05
申请号：US16063916
申请日：2017-12-15
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Zhongyuan Wu , Fei Yang
IPC: G09G3/3291 , G09G3/3258
Abstract: The present application discloses a method for compensating data voltages in a display apparatus. The method for individually compensating a data voltage to be applied to one of the multiple pixel circuits in the display apparatus. The method includes obtaining a threshold voltage of the driving transistor in the one of the multiple pixel circuits. Additionally, the method includes applying a testing voltage to a gate electrode of the driving transistor for charging the sense line up to a first time period to determine a first monitoring voltage associated with the sense line. The testing voltage is set to be a sum of the threshold voltage and a first setting voltage. Moreover, the method includes compensating a data voltage to be applied to the one of the multiple pixel circuits based on the first monitoring voltage and the threshold voltage.
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公开(公告)号：US20210201789A1
公开(公告)日：2021-07-01
申请号：US16063916
申请日：2017-12-15
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Zhongyuan Wu , Fei Yang
IPC: G09G3/3258 , G09G3/3291
Abstract: The present application discloses a method for compensating data voltages in a display apparatus. The method for individually compensating a data voltage to be applied to one of the multiple pixel circuits in the display apparatus. The method includes obtaining a threshold voltage of the driving transistor in the one of the multiple pixel circuits. Additionally, the method includes applying a testing voltage to a gate electrode of the driving transistor for charging the sense line up to a first time period to determine a first monitoring voltage associated with the sense line. The testing voltage is set to be a sum of the threshold voltage and a first setting voltage. Moreover, the method includes compensating a data voltage to be applied to the one of the multiple pixel circuits based on the first monitoring voltage and the threshold voltage.
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公开(公告)号：US20210074222A1
公开(公告)日：2021-03-11
申请号：US16634785
申请日：2019-06-14
Applicant: BOE Technology Group Co., Ltd.
Inventor： Song Meng
IPC: G09G3/3275
Abstract: A display driving method, compensation data compression and decompression methods and devices, a display device and a storage medium. The compensation data compression method includes dividing a display panel into at least one region; determining a reference value according to first compensation data of each pixel unit in each of at least one region; performing a computation on the first compensation data and the reference value to obtain corresponding second compensation data. The storage bit length of the second compensation data is shorter than the storage bit length of the first compensation data.
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45.发明授权公开(公告)号：US10916164B2
公开(公告)日：2021-02-09
申请号：US16348315
申请日：2018-08-28
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chen Song , Tangxiang Wang , Zhan Gao , Song Meng , Dongfang Yang
IPC: G09G3/3233 , G09G3/00
Abstract: The present disclosure discloses a sampling method, a sampling control method, a sampling device, a sampling control device, a sampling control system, and a display device. The present disclosure provides a sampling method for sampling pixel units disposed on a display substrate, the method including: the controller controlling a plurality of sampling modules to be simultaneously turned on, so that a plurality of sampling modules controlled by the controller are capable of receiving luminance information of the pixel units obtained through sampling of the sampling channel; the controller sequentially controlling a group of sampling channels to be simultaneously turned on, so that the group of sampling channels simultaneously sample the luminance information, and transmit the sampled luminance information to respective sampling modules connected to the group of sampling channels through the output terminals of the group of sampling channels.
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Patent Agency Ranking
46.发明授权公开(公告)号：US10825392B2
公开(公告)日：2020-11-03
申请号：US16395715
申请日：2019-04-26
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/3233 , G09G3/00
Abstract: Embodiments of the present disclosure provide a data signal compensation method for a pixel circuit, including: inputting a test signal to the data signal line, and detecting a real-time voltage at the first node after a first preset time elapses; comparing the real-time voltage with a preset voltage, and in response to the real-time voltage being deviated from the preset voltage, adjusting an initial compensation value for a mobility, so as to make the real-time voltage be consistent with the preset voltage, wherein the preset voltage is set by obtaining an initial threshold voltage for the driving transistor; generating a compensation test signal and inputting the compensation test signal to the data signal line; and generating a test signal, inputting the generated test signal to the data signal line, and sensing a first voltage at the first node after a first preset time elapses as the preset voltage.
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公开(公告)号：US10755646B2
公开(公告)日：2020-08-25
申请号：US15549553
申请日：2017-02-17
Applicant: BOE Technology Group Co., Ltd.
IPC: G09G3/30 , G09G3/3291 , G09G3/3266 , G09G3/3283
Abstract: A driving method of an organic light-emitting display device, the display device includes a plurality of sub-pixels, each of the sub-pixels includes a driving transistor, an organic light-emitting diode and a sense line connected to the driving transistor and the organic light-emitting diode, the method includes: detecting threshold voltages of driving transistors of the sub-pixels or turn-on voltages of organic light-emitting diodes of the sub-pixels by sense lines; calculating a first driving voltage of a data driving circuit or a second driving voltage applied to anodes of the organic light-emitting diodes according to all detected threshold voltages or detected turn-on voltages respectively; and based on the first driving voltage or the second driving voltage, applying data driving voltages and supply voltages to the sub-pixels.
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48.发明申请公开(公告)号：US20200105191A1
公开(公告)日：2020-04-02
申请号：US16395715
申请日：2019-04-26
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/3233 , G09G3/00
Abstract: Embodiments of the present disclosure provide a data signal compensation method for a pixel circuit, including: inputting a test signal to the data signal line, and detecting a real-time voltage at the first node after a first preset time elapses; comparing the real-time voltage with a preset voltage, and in response to the real-time voltage being deviated from the preset voltage, adjusting an initial compensation value for a mobility, so as to make the real-time voltage be consistent with the preset voltage, wherein the preset voltage is set by obtaining an initial threshold voltage for the driving transistor; generating a compensation test signal and inputting the compensation test signal to the data signal line; and generating a test signal, inputting the generated test signal to the data signal line, and sensing a first voltage at the first node after a first preset time elapses as the preset voltage.
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公开(公告)号：US10593265B2
公开(公告)日：2020-03-17
申请号：US16080466
申请日：2018-01-16
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/3233 , G09G3/3225
Abstract: A compensation circuit and a manufacturing method thereof, a pixel circuit, a compensation device and a display device are disclosed. The OLED compensation circuit includes at least two sense transistors, the at least two sense transistors are in one-to-one correspondence with at least two sub-pixels in a pixel, and a first electrode of each of the sense transistors is electrically connected to a driving transistor of corresponding one of the sub-pixels; a magnitude relationship between channel width-to-length ratios of driving transistors of any two sub-pixels of the at least two sub-pixels is identical with a magnitude relationship between channel width-to-length ratios of two sense transistors corresponding to the two sub-pixels.
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50.发明授权公开(公告)号：US10510290B2
公开(公告)日：2019-12-17
申请号：US15038362
申请日：2015-12-10
Applicant: BOE TECHNOLOGY GROUP CO., LTD
Inventor： Danna Song , Zhongyuan Wu , Song Meng , Cuili Gai
IPC: G09G3/3225
Abstract: The present invention provides a display apparatus with display screen burn-ins prevention functions, comprising a calculation module configured to identify a set of to-be-adjusted grayscale edge pixels corresponding to a static display part in a detection area based on a plurality of sets of grayscale edge pixels identified from a plurality of images in the detection area at different time instances; a determination module configured to determine whether the set of to-be-adjusted grayscale edge pixels is an empty set; and an adjustment module configured to adjust intensity levels of the to-be-adjusted grayscale edge pixels when the determination module determines that the set of to-be-adjusted grayscale edge pixels is not an empty set.
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