公开(公告)号：US11386819B2

公开(公告)日：2022-07-12

申请号：US16894075

申请日：2020-06-05

Applicant: Samsung Display Co., Ltd.

Inventor： Taegon Im ,  Sooyeon Kim ,  JiYe Lee ,  Hee-Jeong Seo ,  Junghwan Cho

IPC: G09G3/00 ,  G09G3/3225 ,  G06F1/16

Abstract: A display device includes a display panel including first and second panel pads electrically connected to each other, a connection board including first and second connection board pads connected to the first and second panel pads, respectively, an output pad, and a driving circuit. The driving circuit includes a pull-up resistor connected between a first voltage terminal and a first node, and a comparator configured to compare a voltage at the first node with a reference voltage and to output a contact test signal corresponding to a comparison result to the output pad. The first connection board pad is electrically connected to the first node, and the second connection board pad is connected to a second voltage terminal.