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41.发明授权公开(公告)号：US10439630B2
公开(公告)日：2019-10-08
申请号：US15766085
申请日：2017-09-20
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chen Song , Song Meng , Danna Song , Zhongyuan Wu
IPC: H03M1/12 , H03M1/50 , G09G3/00 , H03M1/10 , G09G3/3233
Abstract: The present application discloses an analog-to-digital conversion (ADC) circuit. The circuit includes an integral circuit including an operational amplifier and an integral capacitor. The circuit further includes a comparator and a timer. The operational amplifier includes a positive input terminal configured to receive a first voltage, a negative input terminal coupled to a signal-collection line configured to collect an analog current signal, and an output terminal configured to output a first output signal. The comparator is configured to compare the first output signal with a second voltage to generate a second output signal to the timer. The timer is configured to start a timing operation when the operational amplifier receives the analog current signal and end the timing operation when the second output signal changes. A binary data resulted from the timing operation characterizes a digital signal corresponding to the analog current signal.
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42.发明申请公开(公告)号：US20190103059A1
公开(公告)日：2019-04-04
申请号：US16146425
申请日：2018-09-28
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Fei Yang , Song Meng , Yue Wu , Lirong Wang
IPC: G09G3/3258
Abstract: The present disclosure relates to a compensation circuit and a method for controlling the same, a display panel and a display device. The compensation circuit includes a sensing line for receiving a current from the source to the drain of the first transistor The compensation circuit includes a first switch having a terminal electrically connected to the sensing line. The compensation circuit includes a current sensor electrically connected to another terminal of the first switch and configured to determine a value of a current on the sensing line when the first transistor is turned on and the first switch is closed The compensation circuit includes a controller electrically connected to the current sensor and the data line for adjusting a data signal input to the data line according to the value of the current.
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公开(公告)号：US09947273B2
公开(公告)日：2018-04-17
申请号：US15220080
申请日：2016-07-26
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song Meng , Danna Song , Yang Zhou , Fei Yang
IPC: G09G3/3258
CPC classification number: G09G3/3258 , G09G3/20 , G09G2300/043 , G09G2300/0452 , G09G2320/0233
Abstract: The present disclosure provides a voltage drop compensation method, a voltage drop compensation device and a display device. The voltage drop compensation method includes steps of determining a voltage drop for a power signal corresponding to each subpixel set; determining a first equivalent brightness reduction value corresponding to the voltage drop; calculating an initial brightness value for each subpixel in the subpixel set; calculating a sum of the first equivalent brightness reduction value corresponding to the subpixel set and the initial brightness value as a target brightness value for each subpixel in the subpixel set; and generating a driving signal for each subpixel in accordance with the target brightness value for each subpixel in the subpixel set, and outputting the driving signal.
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公开(公告)号：US11527214B2
公开(公告)日：2022-12-13
申请号：US17428178
申请日：2021-01-20
Inventor： Song Meng , Zhongyuan Wu
IPC: G09G3/36 , G09G3/20 , G09G3/3208
Abstract: An image processing method, an image processing circuit and a display apparatus are provided. The image processing method includes: converting an RGB gray-scale value of each pixel in a current image frame into an RGB luminance value; converting the RGB luminance value into a first RGBW luminance value; determining a luminance level of the current image frame according to the first RGBW luminance value corresponding to each pixel; determining a luminance gain value of the current image frame according to the luminance level of the current image frame; calculating a second RGBW luminance value according to the luminance gain value and the first RGBW luminance value; and converting the second RGBW luminance value into an RGBW gray-scale value.
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45.发明授权公开(公告)号：US11270642B2
公开(公告)日：2022-03-08
申请号：US16674531
申请日：2019-11-05
Inventor： Meng Li , Yongqian Li , Song Meng , Zhidong Yuan , Can Yuan , Haixia Xu , Wenchao Bao
IPC: G06F3/038 , G09G3/3258
Abstract: A pixel unit includes a first sub-pixel circuit and a second sub-pixel circuit. The first sub-pixel circuit includes a first sub-pixel driving circuit and a first light-emitting element, and the second sub-pixel circuit includes a second sub-pixel driving circuit and a second light-emitting element. The first sub-pixel driving circuit and the second sub-pixel driving circuit are connected to a first data line, and the first sub-pixel driving circuit is connected to a first gate line, the second sub-pixel driving circuit is connected to the second gate line. The first sub-pixel driving circuit is configured to drive the first light-emitting element by a data voltage on the first data line under the control of the first gate line. The second sub-pixel driving circuit is configured to drive the second light-emitting element by the data voltage on the first data line under the control of the second gate line.
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Patent Agency Ranking
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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50.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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