公开(公告)号：US11570867B2

公开(公告)日：2023-01-31

申请号：US17364679

申请日：2021-06-30

申请人： Beijing BOE Display Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

发明人： Wei Hao ,  Lingyun Shi ,  Wenchieh Huang ,  Feifei Wang ,  Wengang Su ,  Rui Shi ,  Xingce Shang ,  Junwei Zhang ,  Kaimin Yin ,  Qibing Gu ,  Lili Jia ,  Xiurong Wang

IPC分类号： H05B45/46 ,  H05B45/18 ,  H05B45/14

摘要： A method of controlling a driving circuit applicable to a light-emitting substrate which includes a light-emitting assembly including a plurality of light-emitting-element strings connected in parallel, each of the plurality of light-emitting strings comprising a plurality of light-emitting-elements connected in series, the driving circuit connected to the plurality of light-emitting-element strings via a wiring, wherein the method comprises: obtaining a wiring IR drop, a light-emitting element string IR drop, a voltage deviation, and a channel IR drop; obtaining a target power supply voltage according to the wiring IR drop, the light-emitting element string IR drop, the voltage deviation, and the channel IR drop; comparing the target power supply voltage with an output voltage to obtain a comparison result; generating an adjustment signal according to the comparison result; and adjusting the output voltage according to the adjustment signal. A driving circuit and a light-emitting substrate are further provided.

公开(公告)号：US20240185805A1

公开(公告)日：2024-06-06

申请号：US17760266

申请日：2021-11-05

申请人： BOE MLED Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

发明人： Wei Hao ,  Chinghua Hung ,  Lingyun Shi ,  Feifei Wang ,  Wengang Su ,  Xingce Shang ,  Kaimin Yin ,  Junwei Zhang ,  Taotao Duan

IPC分类号： G09G3/34

CPC分类号： G09G3/3406 ,  G09G2310/0243 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2360/16

摘要： A method for generating driving signal is provided. The method includes generating by a first circuit, a first driving signal for a first frame of image, the first driving signal comprising a plurality of first pulse width modulation signals; transmitting the plurality of first pulse width modulation signals to a modulation controller; detecting a vertical synchronization signal; determining whether a most recent first pulse width modulation signal is partially generated when the vertical synchronization signal is detected; and upon determination that the most recent first pulse width modulation signal is partially generated, determining whether to delay generating a second driving signal for a second frame of image.