公开(公告)号：US20190067556A1

公开(公告)日：2019-02-28

申请号：US15918792

申请日：2018-03-12

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Lijun ZHAO ,  Haisheng WANG ,  Yingming LIU ,  Yuzhen GUO ,  Yanan JIA ,  Changfeng LI ,  Pinchao GU ,  Yunke QIN

IPC: H01L41/113 ,  H01L41/04 ,  H04R17/02 ,  G01L1/16

Abstract: The present disclosure relates to piezoelectric detection circuits, methods and display devices. A piezoelectric detection circuit is provided that may comprise: a piezoelectric device to convert a pressure into a direct current (DC) signal and to convert a sound wave into an alternating current (AC) signal; a comparison circuit configured to output the direct current signal to a signal processor in a case where the piezoelectric device outputs DC signal, and to output the alternating current signal to the mixer in a case where the piezoelectric device outputs AC signal; the mixer configured to perform a mixing process on the AC signal to generate a mixed signal; and the signal processor configured to process the mixed signal output from the mixer or the direct current signal output from the comparison circuit, to detect the pressure or the sound.

公开(公告)号：US20190026522A1

公开(公告)日：2019-01-24

申请号：US15756168

申请日：2017-09-05

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Haisheng WANG ,  Lijun ZHAO ,  Yingming LIU ,  Rui XU ,  Changfeng LI ,  Yanan JIA ,  Yuzhen GUO ,  Pinchao GU ,  Yunke QIN

IPC: G06K9/00 ,  G06F3/041 ,  G02F1/1335

CPC classification number: G06K9/0004 ,  G02F1/13 ,  G02F1/133514 ,  G02F1/133526 ,  G02F1/29 ,  G02F2001/294 ,  G06F3/03547 ,  G06F3/0412

Abstract: The present disclosure discloses a fingerprint identification device, a fingerprint identification method and a touch screen. The fingerprint identification device comprises: an optical sensor with a receiving surface configured to receive fingerprint reflected light; and a lens assembly configured to converge the fingerprint reflected light toward the receiving surface of the optical sensor, wherein the lens assembly includes a liquid crystal lens configured to converge the fingerprint reflected light toward the receiving surface of the optical sensor by rotating liquid crystal molecules at different angles upon energization.

公开(公告)号：US20180356923A1

公开(公告)日：2018-12-13

申请号：US15575883

申请日：2017-06-14

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Rui XU ,  Xue DONG ,  Jing LV ,  Haisheng WANG ,  Yingming LIU ,  Changfeng LI ,  Yuzhen GUO ,  Pinchao GU ,  Yunke QIN ,  Yanan JIA ,  Lijun ZHAO

IPC: G06F3/041 ,  H01L27/32 ,  H01L51/52 ,  G02B5/30 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G02B5/3058 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04105 ,  H01L27/323 ,  H01L51/5281 ,  H01L51/5284

Abstract: The present disclosure relates to display technology and discloses a present disclosure and a display device. The linear polarizer includes a base plate and a plurality of shading stripes equally spaced in parallel on the base plate, with a transparent stripe formed between every two shading stripes adjacent to each other, wherein the shading stripes are made of a conductive material; at least a portion of the shading stripes are also configured to detect touch position.