Patent ID: 9741275
Date: 2017-08-22
CPC Classifications: G01R,G09G

Claim:
1. A panel detection circuit, comprising: a source detection unit, comprising only one source testing line and several source switching units, one end of each source switching unit being connected to the source testing line and the other end thereof being connected to a data line of a display panel, and a gate detection unit, comprising a gate control line, a gate testing line and several gate switching units, a first end of each gate switching unit being connected to the gate control line, a second end thereof being connected to the gate testing line, and a third end thereof being connected to a scan line of the display panel, wherein the source switching unit and the gate switching unit each comprise at least two switching elements to keep the source switching unit and the gate switching unit disenabled after the panel detection is completed; wherein the source switching unit comprises a first transistor and a second transistor, the gate and source of the first transistor being connected to the source testing line, the gate and source of the second transistor being connected to the drain of the first transistor, and the drain of the second transistor being connected to a data line of the display panel.