公开(公告)号：US10380934B2

公开(公告)日：2019-08-13

申请号：US15656209

申请日：2017-07-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yang Hyo Kim ,  Yong Soo Lee ,  Min Su Ha

IPC: G09G5/12 ,  G09G3/20 ,  G09G3/3225

Abstract: A display driving device includes an interface, a clock generator, a sync signal generator and a timing controller. The interface receives a first vertical sync signal having a first vertical period, a first horizontal sync signal having a first horizontal period shorter than the first vertical period, and image data. The clock generator generates a clock signal having a predetermined frequency. The sync signal generator generates a second vertical sync signal using the first vertical sync signal, and generates a second horizontal sync signal having a second horizontal period different from the first horizontal period, using the clock signal, when a porch period included in the first vertical period is greater than a predetermined reference value. The timing controller drives a display panel based on the second vertical sync signal and the second horizontal sync signal.