Display panel drive circuit and display panel

A display device comprising:

• a plurality of pixels provided over a substrate, said plurality of pixels comprising a first thin film transistor;
• a plurality of serially connected shift register circuits;
• a plurality of analog switches provided over said substrate, said plurality of analog switches connected with end parts of said plurality of shift register circuits;
• a control circuit for inputting a start pulse signal into at least one of said plurality of shift register circuits through at least one of said plurality of analog switches, said control circuit provided outside said substrate;
• and
• resistance provided between at least one of said plurality of analog switches and a signal input terminal on said substrate, said signal input terminal connected with said control circuit,
• wherein said plurality of analog switches comprise a second thin film transistor,
• wherein one of source and drain regions of said second thin film transistor is connected with said control circuit.

A display device comprising:

• a plurality of pixels provided over a substrate, said plurality of pixels comprising a first thin film transistor;
• plurality of serially connected shift register circuits comprising a second thin film transistor provided over said substrate;
• plurality of analog switches provided over said substrate, said plurality of analog switches connected with end parts of said plurality of shift register circuits;
• and
• a control circuit for inputting a start pulse signal into at least one of said plurality of shift register circuit through at least one of said plurality of analog switches, said control circuit provided outside said substrate;
• wherein said plurality of analog switches comprise a third thin film transistor,
• wherein one of source and drain regions of said third thin film transistor is connected with said control circuit, and
• wherein said third thin film transistor is formed in a structure having a breakdown strength higher than those of said first and second thin film transistors.

A display device comprising:

• a plurality of series connected shift register circuits provided over a substrate, each of the shift register circuits having a terminal to receive a start pulse signal;
• a plurality of analog switches connected to said terminal of the respective shift register circuits wherein said start pulse signal is input to said terminal through corresponding one of the analog switches;
• wherein each of said plurality of shift register circuitsicomprises a first thin film transistor formed over the substrate and each of said plurality of analog switches comprises a second thin film transistor formed over the substrate, and
• wherein said second thin film transistor has a higher breakdown strength structure than said first thin film transistor.