Patent ID: 8243036

Claim:
A display apparatus comprising: a first substrate, wherein the first substrate comprises a gate line, a readout line and a thin film transistor, the first source/drain electrode of the thin film transistor is electrically coupled to the gate line, and the second source/drain electrode of the thin film transistor is electrically coupled to the readout line; and a second substrate, wherein the second substrate and the first substrate together have a liquid crystal layer sandwiched therebetween, the second substrate comprises a conductive connecting member, the conductive connecting member is preset to be electrically unconnected with a gate electrode of the thin film transistor; wherein when an external force is applied on the conductive connecting member, the conductive connecting member is electrically connected with the gate electrode of the thin film transistor to provide a predetermined voltage to turn on the thin film transistor and thereby a waveform on the gate line is coupled to the readout line.