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公开(公告)号：US20220269123A1
公开(公告)日：2022-08-25
申请号：US17478267
申请日：2021-09-17
Inventor： Huihui LI , Wenchao BAO , Song MENG
IPC: G02F1/1345
Abstract: The present disclosure provides a chip on film and a display device. The chip on film includes: a first end, wherein a first row of bonding terminals and a second row of bonding terminals are arranged on a first surface of the first end, the first row of bonding terminals and the second row of bonding terminals are spaced apart and insulated from each other, and the first row of bonding terminals is closer to a center of the chip on film than the second row of bonding terminals; and a plurality of leads, extending in a second direction and including a first part and a second part. A first end section of each lead of the first part serves as one of the first row of bonding terminals, a first end section of each lead of the second part serves as one of the second row of bonding terminals.
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22.发明申请公开(公告)号：US20210335273A1
公开(公告)日：2021-10-28
申请号：US16474041
申请日：2018-12-21
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song MENG
IPC: G09G3/3275
Abstract: A method for adjusting display brightness of a display panel including: partitioning a display picture into N display areas; determining, for an i-th display area in a current frame, a brightness adjustment parameter for the i-th display area based on display data of the first to (i−1)-th display areas in the current frame; and adjusting display brightness of the i-th display area in the current frame based on the brightness adjustment parameter, wherein N and i are positive integers greater than or equal to 2, and i is less than or equal to N.
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公开(公告)号：US20200211458A1
公开(公告)日：2020-07-02
申请号：US16502755
申请日：2019-07-03
Inventor： Min HE , Song MENG , Fei YANG , Chun CAO , Xiaolong WEI
IPC: G09G3/3233 , G09G3/3266 , G09G3/3275
Abstract: The present disclosure relates to a pixel circuit, a compensation method and a display device. The pixel circuit includes a first switching circuit for supplying a data voltage to a first node in response to a first scan signal being valid, a second switching circuit for conductively connecting a sensing signal line with a second node in response to a second scan signal being valid, a reset circuit for supplying a reset voltage to the sensing signal line in response to a reset control signal being valid, a light-emitting element, and a driving transistor for enabling, when the light-emitting element emits light, the sensing signal line to be charged in response to the second scan signal being valid and the reset control signal being invalid, the voltage of the sensing signal line is sensed after it was charged so as to compensate the data voltage.
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24.发明申请公开(公告)号：US20170193909A1
公开(公告)日：2017-07-06
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
CPC classification number: G09G3/3258 , G09G3/2074 , G09G3/3233 , G09G2310/027 , G09G2310/08 , G09G2320/0233 , G09G2320/0295 , G09G2320/043 , G09G2320/0626 , G09G2330/12 , G09G2360/147
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：US20240242667A1
公开(公告)日：2024-07-18
申请号：US18004345
申请日：2021-12-21
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Mingi CHU , Ying HAN , Song MENG , Fei YANG , Lirong WANG , Zhiqiang DONG , Tianji LI , Jingbo XU , Pan LI
IPC: G09G3/3225 , G09G3/20
CPC classification number: G09G3/3225 , G09G3/2074 , G09G2320/064 , G09G2360/14
Abstract: A display device and a driving method thereof. The display device includes a display substrate and at least one optical sensing unit; the display substrate includes a light-emitting region and a plurality of pixel units located in the light-emitting region; wherein the light-emitting region comprises a single-sided light-emitting region and at least one double-sided light-emitting region, and each of the pixel units in the plurality of pixel units comprises a plurality of sub-pixels; and the at least one optical sensing unit corresponds to the at least one double-sided light-emitting region from a non-display side of the display substrate, and configured to sense light emitted by the sub-pixels during operation in the at least one double-sided light-emitting region, and to provide sensing brightness information of the at least one double-sided light-emitting region to perform brightness compensation on the light-emitting region.
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Patent Agency Ranking
公开(公告)号：US20210193044A1
公开(公告)日：2021-06-24
申请号：US17094193
申请日：2020-11-10
Inventor： Song MENG , Yongqian LI
IPC: G09G3/3258 , G09G3/3291 , G09G3/3266
Abstract: There is provided a driving method for a pixel circuit including a driving transistor, a data writing circuit, a sensing circuit, and a storage capacitor. The driving method includes: during a sensing write stage, writing a test voltage equal to a sum of a first reference voltage and a threshold voltage of the driving transistor, by the data writing circuit, to the control electrode of the driving transistor, and writing a second reference voltage, by the sensing circuit, to a second electrode of the driving transistor; during a sensing sampling stage, continuing to write the test voltage to the control electrode of the driving transistor by the data writing circuit, and stopping writing a voltage to the second electrode of the driving transistor by the sensing circuit. The driving method further includes a sensing reset stage and a sensing charging stage.
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公开(公告)号：US20200312246A1
公开(公告)日：2020-10-01
申请号：US16768638
申请日：2019-12-11
Inventor： Haixia XU , Zhongyuan WU , Zhidong YUAN , Song MENG
IPC: 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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公开(公告)号：US20200066208A1
公开(公告)日：2020-02-27
申请号：US16452981
申请日：2019-06-26
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song MENG
IPC: G09G3/3258 , G09G3/3275
Abstract: The present disclosure provides a compensation method for pixel circuit, a pixel circuit, and a display device. The pixel circuit includes a data writing circuit, a driving circuit, a sensing circuit, and an energy storage circuit, the compensation method includes: in a charging stage, acquiring a voltage of the second node by the sensing circuit, adjusting a data voltage outputted by the data writing circuit to the first node based on the acquired voltage of the second node, and charging the energy storage circuit by using the adjusted data voltage; and in a compensation stage, compensating characteristic parameters of the driving circuit by the charged energy storage circuit.
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公开(公告)号：US20210335245A1
公开(公告)日：2021-10-28
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+i_(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：US20210065629A1
公开(公告)日：2021-03-04
申请号：US16937486
申请日：2020-07-23
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Fei YANG , Song MENG , Xiaolong WEI
IPC: G09G3/3258 , G09G3/3275 , G09G3/3266
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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