公开(公告)号：US20190147801A1

公开(公告)日：2019-05-16

申请号：US16108543

申请日：2018-08-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Ming I CHU ,  Zhongyuan WU ,  Fei YANG ,  Song MENG ,  Danna SONG

IPC: G09G3/3258 ,  H01L27/32

Abstract: A compensation method for an electroluminescent display panel, a driving device, a display device, and a storage medium are provided. The compensation method includes: receiving a first display data signal; performing an optical compensation operation on the first display data signal to obtain a second display data signal; performing an electrical compensation operation on the second display data signal to obtain a third display data signal; and outputting the third display data signal for display.

公开(公告)号：US20170229089A1

公开(公告)日：2017-08-10

申请号：US15214359

申请日：2016-07-19

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Danna SONG

IPC: G09G5/00

CPC classification number: G09G5/003 ,  G09G3/006 ,  G09G3/20 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2320/0693 ,  G09G2330/12

Abstract: The disclosure relates to a detection circuit, a driver integrated circuit and a detection method thereof, for determining a voltage value of a sense line, thereby being advantageous of further determining a value of parasitic capacitance of the sense line. The detection circuit can comprise: a reset module, a charge sharing module and an output module. The reset module can be configured to reset the charge sharing module and the sense line. The charge sharing module can be configured to share charges to the sense line after being reset. The output module can be configured to output the voltage of the sense line after the charges are shared.

公开(公告)号：US20170200428A1

公开(公告)日：2017-07-13

申请号：US15320649

申请日：2016-03-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Danna SONG ,  Song MENG ,  Cuili GAI ,  Zhongyuan WU

IPC: G09G5/02 ,  G09G5/00

CPC classification number: G09G5/02 ,  G09G3/2003 ,  G09G5/003 ,  G09G2300/0452 ,  G09G2300/0465 ,  G09G2340/0407

Abstract: The present disclosure discloses a pixel arrangement structure, an array substrate, a display apparatus and a display control method. The display control method includes obtaining a first grayscale value, a second grayscale value, a third grayscale value and a fourth grayscale value of a blue sub-pixel of four pixel units in a repeating unit; and calculating an actual display value of the blue sub-pixel based on the first grayscale value, the second grayscale value, the third grayscale value and the fourth grayscale value.

公开(公告)号：US20170193905A1

公开(公告)日：2017-07-06

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.

公开(公告)号：US20160117980A1

公开(公告)日：2016-04-28

申请号：US14342023

申请日：2013-04-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhongyuan WU ,  Danna SONG

IPC: G09G3/32

CPC classification number: G09G3/3225 ,  G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045 ,  H03F3/26 ,  H03F3/45

Abstract: An external-compensation sensing circuit, sensing method, and display device. The circuit includes fully-differential operational amplifier, first capacitor, second capacitor and outputting circuit for amplifying induced current; negative input of the amplifier is connected to display screen, positive input thereof is connected to reference voltage, negative output thereof is connected to first control terminal of the outputting circuit, positive output thereof is connected to second control terminal of the outputting circuit; two terminals of the first capacitor are connected to the negative input of the amplifier and an input of the outputting circuit respectively; one terminal of the second capacitor is connected to the output of the outputting circuit and the other terminal is grounded. The invention enables the output voltage to respond rapidly by amplifying induced current with dual outputting stages in the sensing circuit to raise the speed of the external-compensation.

Abstract translation: 外部补偿感测电路，感测方法和显示装置。 该电路包括全差分运算放大器，第一电容器，第二电容器和用于放大感应电流的输出电路; 放大器的负输入连接到显示屏，其正输入连接到参考电压，其负输出连接到输出电路的第一控制端，其正输出连接到输出电路的第二控制端; 第一电容器的两个端子分别连接到放大器的负输入端和输出电路的输入端; 第二电容器的一个端子连接到输出电路的输出，另一个端子接地。 本发明通过在感测电路中通过放大具有双输出级的感应电流来使输出电压快速响应，以提高外部补偿的速度。

公开(公告)号：US20230206792A1

公开(公告)日：2023-06-29

申请号：US16467022

申请日：2018-10-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Danna SONG

IPC: G09G3/00 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2320/0295 ,  G09G2360/16

Abstract: A detecting method of a pixel circuit, a driving method of a display panel and a display device are provided. The pixel circuit includes a driving transistor (T3), and the detecting method comprises: in a first charging cycle, applying a first data voltage (Vd1) to a gate electrode of the driving transistor (T3), and in a first time duration after applying the first data voltage (Vd1) and before the driving transistor (T3) is turned off, obtaining a first sensing voltage (Vs1) at a first electrode of the driving transistor (T3) and determining whether the first sensing voltage (Vs1) is equal to a first reference sensing voltage (Vsr1); and in a second charging cycle, applying a second data voltage (Vd2) to the gate electrode of the driving transistor (T3), and in a second time duration after applying the second data voltage (Vd2) and before the driving transistor (T3) is turned off, obtaining a second sensing voltage (Vs2) at the first electrode of the driving transistor (T3) and determining whether the second sensing voltage (Vs2) is equal to a second reference sensing voltage (Vsr2). The detecting method can realize a compensation detection of the pixel circuit when the pixel circuit is in a power-on state, thereby improving the compensation effect and the brightness uniformity.

公开(公告)号：US20210366388A1

公开(公告)日：2021-11-25

申请号：US16469375

申请日：2019-01-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Danna SONG

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3291

Abstract: A detection method of a pixel circuit, a display panel and a driving method thereof are provided. The detection method includes: during a reference charging period, applying a reference data voltage to a gate electrode of a driving transistor, and at a first time duration after applying the reference data voltage, obtaining a benchmark voltage from a sensing line; and during a data charging period, applying a detection data voltage different from the reference data voltage to the gate electrode of the driving transistor, and at the first time duration after applying the detection data voltage, obtaining an initial sensing voltage from the sensing line. A sensing voltage of the pixel circuit is obtained based on at least the benchmark voltage and the initial sensing voltage, and a threshold voltage of the driving transistor is obtained based on the sensing voltage.

公开(公告)号：US20200082787A1

公开(公告)日：2020-03-12

申请号：US16608417

申请日：2019-01-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Danna SONG

IPC: G09G5/02

Abstract: A method for determining a data processing sequence, for determining a selected color in a plurality of colors display by subpixels included in each pixel of a display apparatus, and the method comprising: determining, according to grayscale values of subpixels of candidate colors in a plurality of pixels included in a plurality of frames of images displayed in a current detection cycle, a usage level representative value of each candidate color in the current detection cycle; and selecting one of the candidate colors as a selected color of a next detection cycle according to detection sequence determining parameters, the detection sequence determining parameters including the usage level representative value of each candidate color in the current detection cycle. By this method, the subpixels of colors with large usage level representative values may be detected and compensated in time.

公开(公告)号：US20190385568A1

公开(公告)日：2019-12-19

申请号：US15771937

申请日：2017-09-20

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Danna SONG ,  Song MENG ,  Mingi CHU

IPC: G09G5/10 ,  G09G3/3258 ,  G09G3/3291

Abstract: The present disclosure discloses an electroluminescent display screen and brightness uniformity compensation method and system thereof, wherein the method comprises: performing test modeling based on a correspondence between an aging rule of an electroluminescent diode in the display screen and an aging rule of a thin film transistor (TFT) in the display screen to acquire a brightness uniformity compensation model; acquiring a first compensation parameter and a second compensation parameter required for compensating the TFT, and acquiring a current brightness ratio of the electroluminescent diode through invoking the brightness uniformity compensation model based on the compensation parameters; performing brightness uniformity compensation on the display screen based on the acquired current brightness ratio of the electroluminescent diode.

公开(公告)号：US20180293016A1

公开(公告)日：2018-10-11

申请号：US15567733

申请日：2017-05-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Song MENG ,  Fei YANG ,  Danna SONG

IPC: G06F3/06 ,  G09G3/3225

Abstract: A method and apparatus for updating data in a memory for electrical compensation, the method comprises: when a master chip receives a power-off signal, writing a serial number of a block being updated or a predetermined value into a nonvolatile memory. In the apparatus, only a nonvolatile memory is required to be provided external to a master chip to store the serial number of the block (the sequence of the block) being updated currently during power-off. Upon a next power-on, it is determined that which rows have their data lost during the previous power-off according to the serial number of the block, and then data of adjacent rows is used to replace the data of the rows which have their data lost during the previous power-off; therefore, the operation is simple and the efficiency is high, so that the time for updating the data is short, without affecting the memory's lifespan