公开(公告)号：US20250130670A1

公开(公告)日：2025-04-24

申请号：US18781677

申请日：2024-07-23

Applicant: Samsung Display Co., LTD.

Inventor： Seung Rok LEE ,  Min Hong KIM ,  Hyeon Seo CHO

IPC: G06F3/041 ,  G06F3/044

Abstract: In a touch inspection device of a display device, the touch inspection device includes: a loading unit on which a display device is loaded; a touch driving circuit configured to drive touch driving electrodes and touch sensing electrodes on a touch sensing unit of the display device, and to detect touch data for touch nodes formed at intersection portions of the touch driving electrodes and the touch sensing electrodes; and an inspection processing circuit configured to calculate deviations of the touch data, to detect touch error data and at least one touch node in which the touch error data occurs by offsetting the deviations of touch data for each of the touch nodes adjacent to each other, and to detect a defect occurrence location for the at least one touch node in which the touch error data occurs.

公开(公告)号：US20250022402A1

公开(公告)日：2025-01-16

申请号：US18614825

申请日：2024-03-25

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Il Ho LEE ,  Ye Rin OH ,  Seung Rok LEE ,  Wan Kee JUN ,  Hyeon Seo CHO

IPC: G09G3/20 ,  G06F3/041

Abstract: A driving circuit includes: a display driver configured to generate a vertical synchronization signal; and a sensor driver configured to determine a driving frequency by using the vertical synchronization signal, wherein a pulse polarity of the vertical synchronization signal is inverted when the driving frequency is changed.