公开(公告)号：US10573232B2

公开(公告)日：2020-02-25

申请号：US15565500

申请日：2017-05-05

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chen Song ,  Zhongyuan Wu

IPC: G06F3/038 ,  G09G3/3233 ,  G09G3/3283 ,  G09G5/00

Abstract: The present disclosure provides conversion circuit and operation method thereof, compensation device, and display apparatus. The conversion circuit includes a conversion unit connected between an output terminal and a first voltage terminal, and an input unit connected with an input terminal and the conversion unit respectively; the input unit is configured to receive current signal from the input terminal and supply the current signal to the conversion unit, and the conversion unit is configured to convert the current signal supplied by the input unit into voltage signal and output the voltage signal from the output terminal; and an equivalent resistance of the conversion unit is configured such that preset voltage corresponding to standard current is output from the output terminal when the standard current is input from the input terminal. With the technical solutions of the present disclosure, drive current for pixel can be accurately converted into voltage signal.

公开(公告)号：US10510901B2

公开(公告)日：2019-12-17

申请号：US15127262

申请日：2015-09-24

Applicant: BOE Technology Group Co., Ltd.

Inventor： Longyan Wang ,  Yongqian Li ,  Cuili Gai ,  Quanhu Li ,  Baoxia Zhang ,  Jingwen Yin ,  Kun Cao ,  Zhongyuan Wu ,  Gang Wang

IPC: H01L29/76 ,  H01L29/786 ,  H01L27/12 ,  H01L27/32 ,  H01L29/417 ,  H01L29/423 ,  H01L29/66

Abstract: A thin film transistor and a fabrication method thereof, an array substrate and a display device are provided. The thin film transistor comprises a gate electrode, an active layer, a source electrode and a drain electrode. The source electrode and the drain electrode include a first conductive layer provided on the active layer, and an etching rate of a material of the first conductive layer is greater than an etching rate of a material of the active layer in an etching liquid. The problem that the active layer of the thin film transistor is easily corroded in a back channel etch process is avoided, a number of patterning processes is reduced, and fabrication cost is reduced.

公开(公告)号：US10396130B2

公开(公告)日：2019-08-27

申请号：US15715125

申请日：2017-09-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Kun Cao ,  Zhongyuan Wu

IPC: H01L29/08 ,  H01L27/32 ,  H01L51/52 ,  H01L51/56

Abstract: A method for manufacturing a display substrate is provided. The display substrate comprises a first electrode and a second electrode on a base substrate, the display substrate comprises a plurality of sub-pixels, the first electrode comprises a plurality of sub-electrodes corresponding to the plurality of sub-pixels respectively, when a first line extending in a first direction moves in a second direction within an area of each of the sub-electrodes, a distance between two crossing points of the first line and the sub-electrode changes, the first direction being perpendicular to the second direction. The method includes: forming an opaque pixel definition layer on the base substrate on which the plurality of sub-electrodes has been formed, wherein the pixel definition layer comprises light-transmissible openings corresponding to the sub-electrodes respectively, and a location of the pixel definition layer on the display substrate is controlled.

公开(公告)号：US10291224B2

公开(公告)日：2019-05-14

申请号：US15737111

申请日：2017-06-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Fei Yang ,  Zhongyuan Wu ,  Yue Wu

IPC: H03K17/00 ,  H03K17/30 ,  G09G3/3208 ,  G06F3/147 ,  H03K19/21 ,  G09G3/3233 ,  G09G3/3266 ,  G11C19/28

Abstract: Embodiments of this disclosure provide a gate driving circuit, a driving method thereof, a display panel and a display device. The gate driving circuit comprises: a corner cutting circuit and a scanning circuit. The corner cutting circuit is configured to output a corner cut voltage signal, wherein the corner cut voltage signal comprises a pulse whose edge is smoothed. The scanning circuit is configured to output a corner cut scanning signal based on the corner cut voltage signal, wherein the corner cut scanning signal comprises a pulse whose edge is smoothed.

公开(公告)号：US10204557B2

公开(公告)日：2019-02-12

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 ,  G09G3/3233

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.

公开(公告)号：US20180286930A1

公开(公告)日：2018-10-04

申请号：US15788230

申请日：2017-10-19

Applicant: BOE Technology Group Co., Ltd.

Inventor： Cuili Gai ,  Zhongyuan Wu ,  Kun Cao ,  Yicheng Lin ,  Quanhu Li

IPC: H01L27/32 ,  G02F1/153 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/1334 ,  G02F1/137 ,  G02F1/163 ,  G02B27/01

CPC classification number: H01L27/3232 ,  G02B27/0172 ,  G02F1/13306 ,  G02F1/1334 ,  G02F1/134309 ,  G02F1/137 ,  G02F1/15 ,  G02F1/153 ,  G02F1/163 ,  G02F2001/134345 ,  G02F2201/44 ,  H01L27/3244 ,  H01L27/3276 ,  H01L51/5206 ,  H01L51/5234 ,  H01L51/524 ,  H01L51/56 ,  H01L2227/323 ,  H01L2251/5315 ,  H01L2251/5323

Abstract: A display panel, a display method thereof, and a manufacturing method thereof are provided. The display panel includes a plurality of sub-pixel units. Each of the sub-pixel units includes a first display area and a second display area; the first display area includes an active emitting display unit; and the second display area is configured to switch between a transparent state and an opaque state.

公开(公告)号：US09984626B2

公开(公告)日：2018-05-29

申请号：US14076408

申请日：2013-11-11

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhongyuan Wu ,  Liye Duan

IPC: G09G3/32 ,  G09G3/3258 ,  G09G3/3233

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0871 ,  G09G2310/0251 ,  G09G2320/045

Abstract: The embodiments of the invention disclose a pixel circuit, a display device and a driving method thereof. The pixel circuit comprises a light-emitting element; a driving TFT, its drain is input a power supply voltage signal; a first TFT, its drain is connected with a source of the driving TFT, its source is connected with the light-emitting element, its gate receives a first control signal; a second TFT, its source receives a data signal, its drain is connected with a gate of the driving TFT, its gate receives a scanning signal; a third TFT, its source receives a reference voltage signal, its gate receives the scanning signal; a fourth TFT, its source is connected with a drain of the third TFT, its drain is connected with the gate of the driving TFT and the drain of the second TFT, its gate receives a second control signal; and a capacitor.

公开(公告)号：US09704432B2

公开(公告)日：2017-07-11

申请号：US14646086

申请日：2014-10-14

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiangfei Zhang ,  Zhongyuan Wu ,  Yang Zhou

IPC: G09G3/3225 ,  G09G3/20

CPC classification number: G09G3/3225 ,  G09G3/2003 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2320/0666 ,  G09G2320/0693 ,  G09G2360/14 ,  G09G2360/141 ,  G09G2360/145

Abstract: A luminance compensation method and a luminance compensation device of a display device, and the display device are provided. The luminance compensation method of the display device, includes: obtaining an input grayscale value of one of a plurality of sub-pixels corresponding to the display device of an input image, and obtaining a functional relationship between a compensated grayscale value and the input grayscale value corresponding to the sub-pixel; obtaining the compensated grayscale value corresponding to the sub-pixel by using the functional relationship, and performing luminance compensation on the sub-pixel according to the compensated grayscale value; and executing the above operations repeatedly for each of the plurality of sub-pixels of the input image.

公开(公告)号：US20170053590A1

公开(公告)日：2017-02-23

申请号：US15022359

申请日：2015-08-04

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Danna Song ,  Zhongyuan Wu ,  Junjie Lin ,  Cuili Gai ,  Lirong Wang ,  Chen Song ,  Szuheng Tseng

IPC: G09G3/3225 ,  G01R19/165

CPC classification number: G09G3/3225 ,  G01R19/1659 ,  G09G3/32 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045

Abstract: The disclosure provides a detection circuit, a detection method and a drive system. The detection circuit comprises a switching unit, a reset unit and a comparison unit. The switching unit is used for switching the operations of the reset unit and the comparison unit. The reset unit is used for resetting the acquisition unit before the acquisition unit begins acquisition. The comparison unit is used for comparing a signal acquired by the acquisition unit with a standard signal to obtain a characterization quantity of the to-be-detected voltage.

Abstract translation: 本公开提供了检测电路，检测方法和驱动系统。 检测电路包括开关单元，复位单元和比较单元。 切换单元用于切换复位单元和比较单元的操作。 复位单元用于在采集单元开始采集之前复位采集单元。 比较单元用于将由采集单元获取的信号与标准信号进行比较，以获得待检测电压的表征量。

公开(公告)号：US09489894B2

公开(公告)日：2016-11-08

申请号：US14437031

申请日：2014-08-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jingwen Yin ,  Zhongyuan Wu ,  Lirong Wang

IPC: G09G3/32 ,  H01L27/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0809 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0219 ,  G09G2320/0626 ,  H01L27/3248 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3276

Abstract: There is provided a pixel circuit comprising a driving transistor (DTFT), a signal loading module, a light emitting control module and a storage capacitor (Cs). The pixel circuit can effectively eliminate the non-uniformity due to the threshold voltage of the driving transistor (DTFT) itself and the afterimage phenomenon due to the threshold voltage drift when driving the OLED, avoid the display brightness non-uniformity due to different threshold voltages of the driving transistors (DTFT) between the OLEDs of different pixel units. There is further provided a driving method for the above pixel circuit and a TFT backboard comprising the above pixel circuit.

Abstract translation: 提供了包括驱动晶体管（DTFT），信号加载模块，发光控制模块和存储电容器（Cs）的像素电路。 像素电路可以有效地消除由于驱动晶体管（DTFT）本身的阈值电压而导致的不均匀性，以及驱动OLED时由于阈值电压漂移引起的残像现象，避免了由于不同的阈值电压引起的显示亮度不均匀 的不同像素单元的OLED之间的驱动晶体管（DTFT）。 还提供了用于上述像素电路的驱动方法和包括上述像素电路的TFT背板。