US 12,067,911 B2
Display driving device and display driving method
Jung Min Choi, Daejeon (KR); Jong Min Park, Daejeon (KR); Chung Min Lee, Daejeon (KR); and Kwon Sang Han, Daejeon (KR)
Assigned to LX SEMICON CO., LTD., Daejeon (KR)
Filed by LX SEMICON CO., LTD., Daejeon (KR)
Filed on Jun. 30, 2022, as Appl. No. 17/854,152.
Claims priority of application No. 10-2021-0089086 (KR), filed on Jul. 7, 2021.
Prior Publication US 2023/0011297 A1, Jan. 12, 2023
Int. Cl. G09G 3/00 (2006.01)
CPC G09G 3/006 (2013.01) [G09G 2310/0275 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A display driving device for driving a display panel including a gate line, a data line intersecting with the gate line, and a pixel defined by the gate line and the data line, the display driving device comprising:
a data driver configured to input an image signal to the pixel through the data line;
a panel test unit configured to determine an occurrence of an error at the gate line or the data line; and
a switching unit configured to selectively connect the data driver or the panel test unit to the display panel, wherein
when a parasitic capacitance signal generated by the gate line and the data line is less than a first threshold value, the panel test unit is configured to determine that a corresponding gate line or a corresponding data line is opened, and
when the parasitic capacitance signal generated by the gate line and the data line is greater than a second threshold value, the panel test unit is configured to determine that a corresponding gate line or a corresponding data line is short-circuited.