waveform when no picture element is emitting a drive method for the scanning side electrodes will now be described the internal construction of the logic circuits 121 and 131 of the n ch high withstanding mos ics 120 and 130 and that of the logic circuits 141 and 151 of the p ch high withstanding mos ics 140 and 150 are shown in fig5 b and c respectively reference numerals 3000 and 4000 represent shift registers and reference numerals 3001 and 4001 represent latch circuits the truth table values for the respective logic circuits are shown on tables 2 and 3 the constructions of the n ch high withstanding mos ics and p ch high withstanding mos ics are complementary to each other although they have reverse logics they have the identical construction therefore only n ch high withstanding mos ics 120 and 130 will now be described table 2______________________________________n ch mos ic truth value table str1 str2 nst transistor______________________________________x l x offx h l onl h h onh h h off______________________________________ table 3______________________________________p ch mos ic truth value table pdata pcl str3 transistor______________________________________x h x offx l h onh l l onl l l off______________________________________ the shift register 3000 stores.