公开(公告)号：US20180090053A1

公开(公告)日：2018-03-29

申请号：US15705637

申请日：2017-09-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Airong LIU ,  Zhongyuan WU ,  Chen SONG

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G3/20 ,  G09G2300/08 ,  G09G2310/0243 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/0291 ,  G09G2330/02 ,  G11C19/00 ,  G11C19/28

Abstract: The present disclosure relates to an output buffer, a method for operating the same, a source driver and a display panel. The output buffer includes a matching unit, an input unit and an output unit. The matching unit outputs a first control signal by dynamic element matching technique according to an input signal of the first voltage terminal. The input unit outputs a third control signal based on the first control signal and input signals of the input terminal and the second voltage terminal. The output unit controls an output signal of the output terminal in accordance with the third control signal and input signals of the first signal terminal, the second signal terminal, the third signal terminal, the fourth signal terminal and the second voltage terminal.

公开(公告)号：US20190006868A1

公开(公告)日：2019-01-03

申请号：US15576644

申请日：2017-07-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chen SONG ,  Airong LIU ,  Tangxiang WANG ,  Lei CHEN

IPC: H02J7/00 ,  H03K5/24 ,  H03F3/45

CPC classification number: H02J7/0068 ,  H02J7/345 ,  H03F3/45475 ,  H03F2200/129 ,  H03F2203/45116 ,  H03F2203/45514 ,  H03K5/24

Abstract: A method is disclosed for controlling charging/discharging of a capacitor module. The capacitor module includes a plurality of branches connected in parallel, each of which includes a capacitor and a switch connected in series with the capacitor. The method includes measuring a first charge/discharge time for the capacitor module being charged/discharged from an initial voltage to an intermediate voltage, and To adjusting a second charge/discharge time for the capacitor module being further charged/discharged from the intermediate voltage to a target voltage by controlling on/off of at least one of the switches depending on the first charge/discharge time, the intermediate voltage being between the initial voltage and the target voltage. Also disclosed are an apparatus for controlling charging/discharging of a capacitor module and a display apparatus including the apparatus.

公开(公告)号：US20180308428A1

公开(公告)日：2018-10-25

申请号：US15558068

申请日：2017-02-17

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

Inventor： Lei CHEN ,  Chen SONG ,  Airong LIU ,  Tangxiang WANG ,  Xuelian CHENG

IPC: G09G3/3258 ,  H01L51/52 ,  H01L27/32

Abstract: Disclosed are a circuit and a method for detecting a driving current of an organic light emitting diode display device, and an organic light emitting diode display device, the method includes: after detecting for a predetermined time period, obtaining an output voltage of the integrating circuit, and comparing the output voltage with at least one reference voltage; in the case that the output voltage and the reference voltage satisfy a predetermined condition, adjusting capacitance of a capacitor of the integrating circuit.