公开(公告)号：US11994762B2

公开(公告)日：2024-05-28

申请号：US17802744

申请日：2021-10-14

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

发明人： Yang Ge ,  Yu Zhao ,  Xiaojuan Wu ,  Jiaxing Wang ,  Xian Wang ,  Huairui Yue ,  Jianwei Ma ,  Hailong Wang ,  Dawei Feng ,  Hao Yan

IPC分类号： G02F1/1333 ,  G02F1/133 ,  G02F1/1339 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368

CPC分类号： G02F1/13338 ,  G02F1/13306 ,  G02F1/133357 ,  G02F1/1339 ,  G02F1/134309 ,  G02F1/136286 ,  G02F1/1368

摘要： Provided is a liquid crystal handwriting board. The liquid crystal handwriting board includes: a liquid crystal panel, and a drive assembly electrically connected to the liquid crystal panel; wherein the liquid crystal panel includes: a first substrate and a second substrate that are opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate; and the drive assembly is configured to apply, based on position information of a region to be erased, a pixel voltage to a pixel electrode in the region to be erased in the case that the liquid crystal handwriting board is in an erasing mode, such that a voltage difference is developed between the pixel electrode in the region to be erased and the common electrode.