| 摘要 |
<p>Disclosed is a detection circuit used for a display panel, comprising: a short-circuiting bar, a connecting line used for importing a test signal or a control signal being disposed on the short-circuiting bar; and a transistor array, a gate thereof being connected to the connecting line for importing the control signal. Under the action of the control signal, the connecting line for importing the test signal is communicated with a data line or a scanning line of the display panel by using a source and a drain of a transistor. An element is disposed between the gate of the transistor array and the short-circuiting bar. When the control signal is a signal making the transistor array be cut off, the element is used for further reducing a voltage on the gate, so that the transistor array can be reliably cut off. By using the present invention, a situation of a leakage current of the transistor array such as a TFT switch array can be prevented from occurring. In addition, control on the connecting line is omitted, and a situation in which other test connecting lines are hung when the display panel is used normally is avoided. The circuit in the present invention also particularly facilitates designing of a display panel with a narrow frame; therefore, a channel of the TFT switch can be designed to be quite short.</p> |
