公开(公告)号：US20240125647A1

公开(公告)日：2024-04-18

申请号：US17967898

申请日：2022-10-18

Applicant: Japan Display Inc.

Inventor： Naoki TAKADA ,  Xingle WANG ,  Chung-Kai CHEN

IPC: G01J1/44 ,  G01J1/46

CPC classification number: G01J1/44 ,  G01J1/46 ,  G01J2001/446 ,  G01J2001/448

Abstract: According to one embodiment, a sensor device comprises a sensor configured to output a sense signal, a value the sense signal changing over time based on incident light, a first reset circuit configured to set the value of the sense signal to a reset value when the value of the sense signal exceeds a threshold, a counter configured to count a first number of times of reset by the first reset circuit, and an arithmetic operation circuit configured to calculate an amount of incident light of a certain period based on the value of the sense signal, the reset value, and the first number of times of reset.

公开(公告)号：US20220253167A1

公开(公告)日：2022-08-11

申请号：US17170176

申请日：2021-02-08

Applicant: Japan Display Inc.

Inventor： Chung-Kai CHEN

IPC: G06F3/041

Abstract: A touch detecting system includes a detection panel that generates a detection signal based on a received transmitter signal and an object placed in proximity to a detection panel. The detection signal includes information about the object. A receiver circuit receives the detection signal and includes a control circuit that determines, each time a transmitter start signal becomes active, a delay time to add when generating an adaptive control signal. The transmitter start signal indicates a start of operation of the transmitter signal. A mixer circuit receives the detection signal and the adaptive control signal, and outputs a demodulated detection signal based on the detection signal and the adaptive control signal. An output circuit receives the demodulated detection signal and outputs an output detection signal that includes the information about the object placed in proximity to the detection panel.