公开(公告)号：US20200082760A1

公开(公告)日：2020-03-12

申请号：US16564720

申请日：2019-09-09

Applicant: SYNAPTICS INCORPORATED

Inventor： Toshifumi OGATA ,  Atsushi MARUYAMA ,  Goro SAKAMAKI

IPC: G09G3/3258 ,  G09G3/20

Abstract: A semiconductor device comprises circuitry and a timing generator. The circuitry is configured to generate an emission control signal that controls light emission of pixels of a display panel such that a first vertical sync period comprises a plurality of control cycles for the light emission of the pixels. The timing generator is configured to, when a length of the first vertical sync period is changed, start a next vertical sync period following the first vertical sync period at timing based on a length of the control cycles.

公开(公告)号：US20190278967A1

公开(公告)日：2019-09-12

申请号：US15916034

申请日：2018-03-08

Applicant: SYNAPTICS INCORPORATED

Inventor： Petr SHEPELEV ,  Erik THOMPSON ,  Michitoshi HONMA ,  Toshifumi OGATA ,  Goro SAKAMAKI ,  Takashi NOSE ,  Hirobumi FURIHATA

IPC: G06K9/00 ,  G09G3/20 ,  G09G3/32

Abstract: An example method of illuminating an optical fingerprint sensor integrated with a display, where the display includes a fingerprint (FP) pixel region and an outer pixel region exclusive of the FP pixel region, is described. The method includes: processing image data in display driver circuitry configured to drive the display to present an image; adjusting a first brightness setting, during the processing of the image data, corresponding to both the FP pixel region and the outer pixel region to provide illumination for the optical fingerprint sensor; and adjusting a second brightness setting, during the processing of the image data, corresponding to only the outer pixel region.