公开(公告)号：US12046167B2

公开(公告)日：2024-07-23

申请号：US16512990

申请日：2019-07-16

Applicant: Samsung Display Co., Ltd. ,  Korea Advanced Institute of Science and Technology

Inventor： Hoon Sohn ,  Sangwoo Choi ,  Minsang Koo ,  Sanghyuk Kwon ,  Eunchul Shin ,  Woojin Jung ,  Jiho Park ,  Soonkyu Hwang

IPC: G01N25/72 ,  G01N21/17 ,  G01N21/95 ,  G01N21/956 ,  G09G3/00

CPC classification number: G09G3/006 ,  G01N21/171 ,  G01N21/95607 ,  G01N25/72 ,  G01N2021/95615

Abstract: An apparatus for inspecting a display panel for defects includes a table which supports the display panel, a laser excitation unit that irradiates a non-display area of the display panel with a point laser beam, a thermal wave detecting unit that generates thermal wave images of irradiated portions of the non-display area, a driving unit, and a control unit. A groove corresponding to an edge of the display panel may be defined in a top surface of the table. A defect, such as a crack, may be detected by comparing a defect pattern obtained from the thermal wave images with a pre-registered defect pattern.

公开(公告)号：US11409395B2

公开(公告)日：2022-08-09

申请号：US16667335

申请日：2019-10-29

Applicant: Samsung Display Co., Ltd.

Inventor： Il Ho Lee ,  Sanghyuk Kwon ,  Yeongbin Kim ,  Chansik Noh ,  Eunchul Shin ,  Sangmin Choi

IPC: G06F3/044 ,  G01R27/26 ,  G01R31/28 ,  G09G3/00

Abstract: A testing device for testing a display module may include touch test pads electrically connected to touch pads of a display module, a first power test pad and a second power test pad electrically connected to a first power pad and a second power pad of the display module, a voltage generator providing a first test power voltage and a second power test voltage to the first power test pad and second power test pad, and a capacitance measurement circuit measuring capacitance between the first power test pad and second power test pad.