DISPLAY DEVICE HAVING IMPROVED VOLTAGE LEVEL CONVERTER CIRCUIT

摘要

PURPOSE: A display device having improved voltage level converter circuit is provided to achieve a display device having a voltage level converter completely suppressing a through current. CONSTITUTION: A display device has a driver including a level converter formed of polysilicon MISTFTs. The level converter includes first, second and third N-channel MISTFTs(NMISTFTs) and first, second and third P-channel MISTFTs(PMISTFTs). Gate and first terminals of the first NMISTFT and PMISTFT, and a gate terminal of the third PMISTFT are coupled to an input terminal via a capacitance. Second terminals of the second NMISTFT and PMISTFT, and a gate terminal of third NMISTFT are coupled to the input terminal via a capacitance. A first terminal of the third PMISTFT, and second terminals of the first NMISTFT and PMISTFT are coupled to a high voltage. A second terminal of the third NMISTFT, gate and first terminals of the second NMISTFT and PMISTFT are coupled to a low voltage. A second terminal of the third PMISTFT and a first terminal of the third NMISTFT are connected to an output terminal.