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公开(公告)号：US10008154B2
公开(公告)日：2018-06-26
申请号：US15139635
申请日：2016-04-27
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Quanhu Li
IPC: G09G3/3266 , G11C19/28
CPC classification number: G09G3/3266 , G09G2300/0426 , G09G2310/0286 , G09G2310/0291 , G09G2320/0233 , G11C19/28
Abstract: The present invention provides a gate driving circuit and an OLED display device. The gate driving circuit comprises multiple stages of shift registers, each stage of shift register is connected to an inverter and provides a first signal and a second signal for the inverter; the inverter receives the first signal and the second signal and generates a light emitting signal according to the first signal and the second signal and input the light emitting signal to the light emitting device; the inverter comprises at least two current amplification units and an external pull-down unit; each current amplification unit comprises a pull-up module, a pull-up hold module, an internal pull-down module and a driving transistor. According to the present invention, the number of transistors can be reduced, the aperture ratio of the display device is improved, and output with high voltage and large current can be provided.
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公开(公告)号：US09831277B2
公开(公告)日：2017-11-28
申请号：US15222136
申请日：2016-07-28
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
CPC classification number: H01L27/124 , H01L27/0266 , H01L27/0292
Abstract: An array substrate, an electro-static discharge method thereof and a display device are disclosed. The array substrate includes: a plurality of data lines, a plurality of gate lines, a power signal line, a charge release signal line, a plurality of electro-static discharge units and at least one short circuit ring unit. The charge release signal line and the power signal line are disposed in parallel, two electro-static discharge units are disposed between them to form an electro-static discharge circuit, each gate line and/or each data line is connected with the charge release signal line by one electro-static discharge unit; the short circuit ring unit is connected between the charge release signal line and the power signal line.
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公开(公告)号：US11205381B2
公开(公告)日：2021-12-21
申请号：US15748731
申请日：2017-06-30
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yi Cheng Lin , Quanhu Li , Cuili Gai , Ling Wang , Baoxia Zhang
IPC: G09G3/3258 , H01L27/32
Abstract: A display panel, a display device and a compensation method are provided. The display panel includes at least one pixel unit group, at least one sensing line, a plurality of gate lines, a plurality of first data lines and a plurality of second data lines. Each pixel unit group includes a plurality of pixel units arranged in two rows and a plurality of columns, the plurality of pixel units in each pixel unit group are connected to a same one of the gate lines, one of two pixel units in each column of each pixel unit group is connected to one of the first data lines corresponding thereto, other one is connected to one of the second data lines corresponding thereto, the plurality of pixel units in each pixel unit group are connected to a same sensing line.
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公开(公告)号：US11170718B2
公开(公告)日：2021-11-09
申请号：US16839580
申请日：2020-04-03
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yi Cheng Lin , Quanhu Li , Cuili Gai , Yu Wang , Mingi Chu , Chien Pang Huang
IPC: G09G3/3258 , G09G3/3266 , G09G3/3275
Abstract: A display panel, a display device, and a compensating method are disclosed. The display panel includes: a plurality of sub-pixels arranged in rows and columns, a plurality of data lines connected to the plurality of sub-pixels, and a plurality of sensing driving lines connected to the plurality of sub-pixels, each of plurality of the sub-pixels includes a pixel circuit; the plurality of sub-pixels constitute a plurality of pixel units, the plurality of pixel units are arranged in a plurality of rows and a plurality of columns, and each of the plurality of pixel units includes four sub-pixels; pixel circuits of the four sub-pixels are connected to a same data line of the plurality of data lines; and the pixel circuits of the four sub-pixels are connected to four sensing driving lines of the plurality of sensing driving lines in a one-to-one correspondence manner.
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公开(公告)号：US10546531B2
公开(公告)日：2020-01-28
申请号：US16067243
申请日：2018-01-04
Applicant: BOE Technology Group Co., Ltd.
Inventor： Quanhu Li
IPC: G09G3/3233 , G09G3/3266 , G09G3/3258 , G09G3/3275
Abstract: A method of driving a pixel circuit. The pixel circuit includes a light emitting element, a drive transistor, a storage capacitor connected between a gate and a source of the drive transistor, a first switch circuit, a second switch circuit, and a third switch circuit. The method includes: performing a data write phase including: bringing a second node out of conduction with the second power supply voltage by the first switch circuit, and charging the storage capacitor via the first switch circuit with a data voltage applied to the data line; performing a detection phase including directing a driving current generated by the drive transistor based on the data voltage to the sensing line via the third switch circuit; and detecting a magnitude of the driving current.
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Patent Agency Ranking
26.发明授权公开(公告)号：US10446077B2
公开(公告)日：2019-10-15
申请号：US15535585
申请日：2016-12-09
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/3233
Abstract: A driving method for preventing image sticking of a display panel upon shutdown, and a display device. The method includes: receiving a shutdown signal; and adjusting driving signals of a sub-pixel circuit of the display panel, so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor of the sub-pixel circuit, and hence allowing the display panel to enter an image sticking prevention mode. The method can prevent image sticking of the display panel at the time of shutdown and hence improve the display quality.
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公开(公告)号：US20190206326A1
公开(公告)日：2019-07-04
申请号：US16043977
申请日：2018-07-24
Applicant: BOE Technology Group Co., Ltd.
Inventor： Lirong Wang , Quanhu Li , Fei Yang , Danna Song , Mingi Chu , Song Meng , Yu Wang , Yi Chen , Zhongyuan Wu
IPC: G09G3/3258 , G09G3/20 , H05B33/08
CPC classification number: G09G3/3258 , G09G3/2003 , G09G2310/0264 , H05B33/0857
Abstract: The disclosure discloses a method for driving a pixel circuit, a drive device and a display device. The method includes: receiving grayscale data to be displayed; determining a voltage compensation value, which corresponds to theoretical drive voltage corresponding to the grayscale data to be displayed, according to a pre-acquired correspondence relationship between theoretical drive voltage corresponding to respective grayscale data, and corresponding voltage compensation values; wherein the voltage compensation value is a voltage drop caused by a detection transistor and a drive transistor in the pixel circuit; and compensating the theoretical drive voltage corresponding to the grayscale data to be displayed with the determined voltage compensation value, and then driving a light-emitting diode in the pixel circuit to emit light.
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公开(公告)号：US20190067647A1
公开(公告)日：2019-02-28
申请号：US16014755
申请日：2018-06-21
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xing Zhang , Wei Li , Quanhu Li , Xuehuan Feng , Jianye Zhang
Abstract: A method for manufacturing an organic light-emitting diode substrate is provided and includes: on a base substrate with a black matrix pattern, forming a conductive layer covering the black matrix pattern and a photoresist pattern that partially stacks on the conductive layer, through one patterning process by taking the black matrix pattern as a mask plate; and removing the photoresist pattern and portions of the conductive layer that stack on the photoresist pattern, thereby forming a patterned conductive layer.
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公开(公告)号：US20190066588A1
公开(公告)日：2019-02-28
申请号：US15736519
申请日：2017-06-30
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yicheng Lin , Quanhu Li , Cuili Gai , Baoxia Zhang , Longyan Wang , Ling Wang
IPC: G09G3/3258 , H01L27/32
Abstract: An OLED driving circuit, an array substrate and a display device are provided. The OLED driving circuit includes a plurality of driving TFTs and a plurality of sense TFTs. Each sense TFT is configured to compensate for a threshold voltage of the respective driving TFT. Each sense TFT corresponds to a respective one of the driving TFTs, a source electrode of each sense TFT is connected to a sense line, and a drain electrode thereof is connected to a drain electrode of the respective driving TFT. The plurality of sense TFTs is divided into a plurality of groups, each group includes at least two sense TFTs which share a same gate electrode and a same source electrode and are connected to a same sense line.
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公开(公告)号：US10121802B2
公开(公告)日：2018-11-06
申请号：US15108186
申请日：2015-11-11
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Quanhu Li
Abstract: The present disclosure provides an array substrate, a method for manufacturing the same and a display device. The array substrate includes a plurality of signal lines and a connection line electrically connected to the plurality of signal lines. During the formation of each insulation layer on the connection line, a via-hole is formed at a position where the connection line is to be interrupted. In addition, the protection layer is provided to cover the portion of the connection line corresponding to the region where the via-hole is located, so as to protect the connection line. Upon the completion of the insulation layers, the connection line may be interrupted through the via-holes, so as to interrupt electrical connection among the signal lines.
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