公开(公告)号：US10964239B2

公开(公告)日：2021-03-30

申请号：US16391802

申请日：2019-04-23

Applicant: Samsung Display Co., Ltd.

Inventor： Daeyoun Cho ,  Sangkil Kim ,  Hyunho Kim ,  Young-joo Noh ,  Jongwoo Park ,  Jongwon Lee ,  Juhee Lee ,  Youngtae Choi

IPC: G01R31/02 ,  G09G3/00 ,  G09G3/3225

Abstract: A lighting test device for a display panel includes: a connection part including a first connection test pad, a second connection test pad and a plurality of test pads, which are arranged at an end of the connection part, where the connection part is allowed to be connected to the display panel through the first connection test pad, the second connection test pad and the test pads; and a test circuit which outputs a connection test signal to the first connection test pad, receives a feedback signal through the second connection test pad, and adjusts voltage levels of test signals to be applied to the test pads based on the connection test signal and the feedback signal.