公开(公告)号：US20210327353A1

公开(公告)日：2021-10-21

申请号：US16346358

申请日：2018-10-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wei Liu ,  Xue Dong ,  Haisheng Wang ,  Xiaoliang Ding ,  Yingming Liu ,  ChihJen Cheng ,  Xueyou Cao ,  Yanling Han ,  Changfeng Li ,  Pengpeng Wang ,  Ping Zhang ,  Rui Xu

IPC: G09G3/3258

Abstract: An electrical signal detection module includes a photoelectrical signal application circuitry, an operational amplifier, a gain control circuitry and a master control circuitry. The gain control circuitry includes at least two gain control sub-circuitries connected in parallel to each other, and a discharge switching sub-circuitry connected in parallel to the gain control sub-circuitries. Each gain control sub-circuitry includes a gain switching sub-circuitry and a gain capacitive sub-circuitry connected in series to each other. The master control circuitry is configured to apply a discharge switching signal to the discharge switching sub-circuitry, and apply a gain switching control signal to the corresponding gain switching sub-circuitry. The gain switching sub-circuitry is configured to control a first end and a second end of the gain switching sub-circuitry to be electrically connected to each other in accordance with the gain switching control signal. The discharge switching sub-circuitry is configured to enable a first end of the gain capacitive sub-circuitry connected to the gain switching sub-circuitry to be electrically connected to, or electrically disconnected from, a second end of the gain capacitive sub-circuitry in accordance with the discharge switching signal.

公开(公告)号：US20190243493A1

公开(公告)日：2019-08-08

申请号：US16144343

申请日：2018-09-27

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang Ding ,  Xue Dong ,  Haisheng Wang ,  Yingming Liu ,  Wei Liu ,  ChihJen Cheng ,  Yuzhen Guo ,  Pengpeng Wang

IPC: G06F3/041 ,  H01L27/32 ,  H01L51/52

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G06F3/0414 ,  G06F3/0416 ,  G06F2203/04111 ,  H01L27/323 ,  H01L51/5237

Abstract: A touch panel, a method of driving a touch panel, and a touch device are provided. The touch panel includes a first detection electrode, a piezoelectric material layer and a position touch structure. The piezoelectric material layer is on the first detection electrode. The position touch structure comprises a touch electrode or a plurality of touch electrodes and is on the piezoelectric material layer. The touch electrode or at least one of the plurality of touch electrodes is configured to function as a second detection electrode as well, and the second detection electrode together with the piezoelectric material layer and the first detection electrode constitutes a piezoelectric sensing structure for implementing a touch pressure detection.