Switch control unit, test apparatus and method for liquid crystal cell

A test apparatus for a liquid crystal cell, comprising a test signal generator, a direct current module, a timing controller connected with said test signal generator, a gate driver connected with said direct current module and said timing controller, and a source driver connected with said timing controller, wherein

• said test signal generator is used for generating a test signal;
• said direct current module is used for generating a high level signal and a low level signal,
• said timing controller is used for generating a frame-on control signal and a gray scale picture signal in accordance with said test signal;
• said gate driver is used for generating a gate scan signal under the control of said frame-on control signal, said high level signal and said low level signal;
• said source driver is used for driving pixel units in the liquid crystal cell with said gray scale picture signal;
• and
• wherein said test apparatus for the liquid crystal cell further comprises a switch control unit connected with said gate diver, which is used for controlling ON and OFF of the signal input to said gate driver so as to control ON and OFF of the gate scan signal.