公开(公告)号：US20220238053A1

公开(公告)日：2022-07-28

申请号：US17580227

申请日：2022-01-20

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

发明人： Dalong MAO ,  Jian ZHAO ,  Peng CHEN ,  Zizheng LIU ,  Zhuo CHEN ,  Dongxu YUAN ,  Hao YU ,  Man WANG

IPC分类号： G09G3/00 ,  G09G3/32 ,  H01L27/32 ,  H01L51/00

摘要： Provided is a flexible display screen, including: a flexible substrate provided with a foldable portion; pixel units disposed on a first surface of the flexible substrate; and a fold detection device including a reflective grating structure, an optical waveguide structure and a photoelectric sensor, wherein the optical waveguide structure and the reflective grating structure are sequentially laminated on the first surface of the flexible substrate and both disposed in the foldable portion, an orthographic projection of the optical waveguide structure onto the flexible substrate is overlapped with an orthographic projection of the reflective grating structure onto the flexible substrate, and the optical waveguide structure is connected to the photoelectric sensor.