公开(公告)号：US11287858B2

公开(公告)日：2022-03-29

申请号：US17064661

申请日：2020-10-07

Applicant: Samsung Display Co., Ltd.

Inventor： Byoungyong Kim ,  Seongtaek Lee ,  Young-Min Park

IPC: G09G3/20 ,  G06F1/18 ,  H01L27/32 ,  G09G3/3275 ,  H01L27/12 ,  G06F1/16

Abstract: A display device may include a display panel including a signal pad and a circuit board including a connection pad having a first connection pad portion and a second connection pad portion. The second connection pad portion may be thicker than the first connection pad portion and may not be overlapped with the first connection pad portion in a plan view. The connection pad may be in contact with the signal pad. A first surface roughness between the first connection pad portion and the signal pad may be greater than a second surface roughness between the second connection pad portion and the signal pad.

公开(公告)号：US11681339B2

公开(公告)日：2023-06-20

申请号：US17685735

申请日：2022-03-03

Applicant: Samsung Display Co., Ltd.

Inventor： Byoungyong Kim ,  Seongtaek Lee ,  Young-Min Park

IPC: G09G3/20 ,  G06F1/18 ,  H01L27/32 ,  G09G3/3275 ,  H01L27/12 ,  G06F1/16

CPC classification number: G06F1/189 ,  G09G3/3275 ,  H01L27/124 ,  H01L27/3276 ,  G06F1/1626 ,  H01L2227/323

Abstract: A display device may include a display panel including a signal pad and a circuit board including a connection pad having a first connection pad portion and a second connection pad portion. The second connection pad portion may be thicker than the first connection pad portion and may not be overlapped with the first connection pad portion in a plan view. The connection pad may be in contact with the signal pad. A first surface roughness between the first connection pad portion and the signal pad may be greater than a second surface roughness between the second connection pad portion and the signal pad.