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.

公开(公告)号：US10262571B2

公开(公告)日：2019-04-16

申请号：US15037797

申请日：2015-10-21

Applicant: BOE Technology Group Co., Ltd.

Inventor： Danna Song ,  Cuili Gai ,  Szu Heng Tseng ,  Song Meng ,  Zhongyuan Wu

IPC: G09G3/20 ,  G09G3/3208 ,  G09G3/3225

Abstract: The present disclosure provides a method and an apparatus for controlling image display of a WOLED display apparatus and a WOLED display apparatus. The method includes: converting gray scale data of respective lights with various colors inputted by a signal source into brightness data of the respective lights with various colors; acquiring brightness adjustment data of white sub-pixel lights and brightness adjustment data of the respective lights with various colors on the basis of the brightness data of the respective lights with various colors and proportions of the respective lights with various colors in the white sub-pixel lights; converting the brightness adjustment data of white sub-pixel lights and brightness adjustment data of the respective lights with various colors into gray scale data and outputting and displaying the gray scale data. The above method and apparatus provides a simple calculating method when adjusting the display data and may eliminate color cast.

公开(公告)号：US10068526B2

公开(公告)日：2018-09-04

申请号：US15102993

申请日：2015-10-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Pan Xu ,  Zhongyuan Wu ,  Yuting Zhang ,  Yongqian Li

IPC: G09G5/10 ,  G09G3/36 ,  G06F3/038 ,  G09G5/00 ,  G09G3/3258 ,  G09G3/3241

Abstract: There are disclosed a pixel circuit and a driving method of the same and a display apparatus. The pixel circuit comprises: a driving transistor (Tr), a storage capacitor (Cs), a data writing module (10), a light-emitting element (20) and a predetermined voltage writing module (30). A first terminal of the storage capacitor (Cs) is connected to a gate of the driving transistor (Tr) and a second terminal thereof is connected to a second electrode of the driving transistor (Tr). The predetermined voltage writing module (30) is configured to make the second electrode of the driving transistor (Tr) reach a predetermined potential in a pre-charging phase and a compensating phase; and the data writing module (10) is configured to store a data voltage of a data line into the storage capacitor (Cs) in the compensating phase. In the pixel circuit and the driving method thereof and the display apparatus, the driving current is not affected by the threshold voltage, and influence of the voltage across the light-emitting element on the driving current is eliminated, thereby the uniformity of luminance of the light-emitting element is raised and improving the display effect of the display apparatus is improved.

公开(公告)号：US10032409B1

公开(公告)日：2018-07-24

申请号：US15533478

申请日：2016-12-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhongyuan Wu

IPC: G09G3/3225 ,  G09G3/3275 ,  G09G1/00

Abstract: The present application discloses a calibration apparatus associated with a sub-pixel circuit, a source electrode driving circuit, and a method for compensating data voltage applied to the data line of the sub-pixel circuit associated with a data line and a sense line. The calibration apparatus includes a capacitance measurement circuit to output a capacitance measurement voltage related to the sense line, a charge sensing circuit to sense a charge voltage on the sense line when the data line is applied with a reference data voltage, and a parameter calibrator to calculate parameters of driving transistor in the sub-pixel circuit based on the capacitance measurement voltage, the reference data voltage, and the charge voltage, and is configured to determine electrical parameter drifts of the driving transistor for the source electrode driving circuit to determine a compensation data voltage to compensate non-uniformity of luminance due to the electrical parameter drifts.

公开(公告)号：US09966041B2

公开(公告)日：2018-05-08

申请号：US14787893

申请日：2015-04-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Kun Cao ,  Zhongyuan Wu ,  Chen Song

IPC: G09G5/10 ,  G09G3/3266 ,  G11C19/28

Abstract: A display circuit and a driving method thereof and a display apparatus are provided. The display circuit comprises a pixel unit (11), a first gate driving unit (12) and a second gate driving unit (13); wherein the first gate driving unit (12) is configured to input a first gate driving signal to the pixel unit (11); the second gate driving unit (13) is configured to input a second gate driving signal to the pixel unit (11); and the pixel unit (11) is configured to perform threshold compensating and gray scale displaying simultaneously under the control of the first gate driving signal and the second gate driving signal. The apparatus and method is capable of reducing the complexity in design of the display circuit, which is advantageous for raising density of pixels of the display panel. The apparatus and method are applicable to manufacture a display.

公开(公告)号：US09799271B2

公开(公告)日：2017-10-24

申请号：US14770364

申请日：2015-01-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Lirong Wang ,  Liye Duan ,  Zhongyuan Wu

IPC: G09G3/36 ,  G09G3/3266 ,  G09G3/3258 ,  G11C19/28

CPC classification number: G09G3/3266 ,  G09G3/3258 ,  G09G2300/0814 ,  G09G2310/0218 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/023 ,  G11C19/28

Abstract: The present disclosure discloses a gate driver, a display apparatus and a gate driving method, to achieve a function of outputting a multi-pulse waveform by the gate driver. The gate driver according to the present disclosure comprises multiple groups of driving units, each group of driving units comprising N driving units each of which comprises a shift register and a logic circuit, wherein N is an integer larger than 1, and an output of a shift register is connected to a logic circuit in each driving unit. The shift registers multiplex multiple clock signals with different timings. Each of the shift registers outputs an output signal to a corresponding logic circuit. A part of a clock signal is selected by the logic circuit for output. In this way, a function of outputting a multi-pulse waveform by the gate driver is achieved, which prepares for a shift register having a function of threshold voltage compensation, to make a shift register capable of multi-row scanning become feasible on a display panel.

公开(公告)号：US09755624B2

公开(公告)日：2017-09-05

申请号：US14429516

申请日：2014-04-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liye Duan ,  Lirong Wang ,  Zhongyuan Wu

IPC: G09G5/20 ,  H03K4/08 ,  H03K4/06 ,  G09G3/20

CPC classification number: H03K4/06 ,  G09G3/20 ,  G09G5/20 ,  G09G2300/0408 ,  G09G2310/0259 ,  G09G2310/066 ,  H03K4/08

Abstract: A ramp signal generating circuit and ramp signal generator, an array substrate and a display apparatus. The ramp signal generating circuit comprises a first shift register (11), a second shift register (12), a voltage decreasing unit (13) and a sampling unit (14); the voltage decreasing unit (13) is connected to a first power supply input terminal, a second power supply input terminal and a ground terminal and is configured to continuously decrease a voltage inputted from the first power supply input terminal and a voltage inputted from the second power supply input terminal stage by stage; the first shift register (11) is connected to the voltage decreasing unit (13) and is configured to control the voltage decreasing unit (13) to output voltages which are decreased continuously stage by stage; the sampling unit (14) has an output terminal and is connected to the voltage decreasing unit (13); the second shift register (12) is connected to the sampling unit (14) and is configured to control the sampling unit (14) to sample and output the voltages which are decreased continuously stage by stage and outputted by the voltage decreasing unit (13). Such ramp signal generating circuit is capable of reducing area of the ramp signal generating circuit and improving linearity of ramp signal.

公开(公告)号：US09679520B2

公开(公告)日：2017-06-13

申请号：US14769086

申请日：2014-12-19

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Danna Song ,  Zhongyuan Wu

IPC: G09G3/36 ,  G09G3/3266 ,  H01L23/50 ,  G09G3/20 ,  H01L27/32

CPC classification number: G09G3/3266 ,  G09G3/20 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2300/08 ,  H01L23/50 ,  H01L27/3276 ,  H01L2251/5315 ,  H01L2924/0002 ,  H01L2924/00

Abstract: The present disclosure provides an array substrate, a method of producing the same and a display apparatus. The array substrate comprises: N rows of scan lines, N being a natural number; M columns of data lines, which are arranged to cross with the N rows of scan lines, M being a natural number; a display array comprising N×M pixel units defined by the N rows of scan lines and the M columns of data lines; and N columns of leading wires electrically connected to the N rows of scan lines respectively and led out in parallel to the M columns of data lines. It may narrow the frame of the display apparatus.

公开(公告)号：US20170162095A1

公开(公告)日：2017-06-08

申请号：US15322543

申请日：2016-04-08

Applicant: BOE Technology Group Co., Ltd.

Inventor： Chen Song ,  Zhongyuan Wu ,  Hongjun Xie ,  Kun Cao

IPC: G09G3/20 ,  G11C19/28

CPC classification number: G09G3/20 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0408 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0286 ,  G09G2310/08 ,  G11C19/28

Abstract: Embodiments of the present disclosure provide a shift register unit, a gate driving circuit and a display device. The shift register unit comprises two reset-set RS flip-flops. An set S terminal of a first RS flip-flop receives a trigger signal, and a reset R terminal of the first RS flip-flop receives a clock signal. An S terminal of a second RS terminal receives the clock signal, a R terminal of the second RS flip-flop is connected to a Q terminal of the first RS flip-flop, and a Q terminal of the second RS flip-flop is an output terminal of the shift register unit.

公开(公告)号：US20160189677A1

公开(公告)日：2016-06-30

申请号：US14787893

申请日：2015-04-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： KUN CAO ,  Zhongyuan Wu ,  Chen Song

IPC: G09G5/10

CPC classification number: G09G5/10 ,  G09G3/3258 ,  G09G3/3266 ,  G09G2300/0408 ,  G09G2310/0262 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/021 ,  G09G2330/10 ,  G09G2330/12 ,  G11C19/287

Abstract: A display circuit and a driving method thereof and a display apparatus are provided. The display circuit comprises a pixel unit (11), a first gate driving unit (12) and a second gate driving unit (13); wherein the first gate driving unit (12) is configured to input a first gate driving signal to the pixel unit (11); the second gate driving unit (13) is configured to input a second gate driving signal to the pixel unit (11); and the pixel unit (11) is configured to perform threshold compensating and gray scale displaying simultaneously under the control of the first gate driving signal and the second gate driving signal. The apparatus and method is capable of reducing the complexity in design of the display circuit, which is advantageous for raising density of pixels of the display panel. The apparatus and method are applicable to manufacture a display.

Abstract translation: 提供了显示电路及其驱动方法和显示装置。 显示电路包括像素单元（11），第一栅极驱动单元（12）和第二栅极驱动单元（13）; 其中，所述第一栅极驱动单元（12）被配置为向所述像素单元（11）输入第一栅极驱动信号; 第二栅极驱动单元（13）被配置为将第二栅极驱动信号输入到像素单元（11）; 并且像素单元（11）被配置为在第一栅极驱动信号和第二栅极驱动信号的控制下同时进行阈值补偿和灰度显示。 该装置和方法能够降低显示电路的设计复杂度，这有利于提高显示面板的像素的密度。 该装置和方法适用于制造显示器。