Fault detection circuit of in cell type touch display panel before cell process and fault detection method
The present invention provides a detection circuit of an In Cell type touch display panel and a detection method. By locating a line multiplexer corresponding to the touch sensing electrodes of each column, and selecting and charging at least one parasitic capacitor constructed with the touch sensing electrode and a ground in the touch sensing electrodes of the column with the line multiplexer, and then, measuring the charge electric quantity with the electric quantity measurement unit, and judging whether the touch sensing electrode faults or not according to the value of the charged electric quantity, the detection circuit can accomplish the fault detection to the touch sensing electrode in the array process.
SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
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Sikun Wenying
Hao Li