Driver circuit for switching elements, especially for liquid crystal screens

Abstract

Abstract The driver circuit for switching arrangements consists of a shift register stage (T1, T2, T3, T4, C1), which transmits a signal which is present at the input to the output of the shift register stage, delayed in time with the aid of two clock signals, and of an output driver stage, consisting of a driver transistor (T6), a discharging transistor (T5), a charging transistor (T7) and a storage capacitor (CB), which is charged up via the charging transistor (T7) when an input pulse (UE) is present and ensures that the driver transistor (T6) supplies large charging and discharging currents, as a result of a high control voltage. The circuit arrangement can be used in particular for driving the pixels in a liquid crystal display screen, the sensor elements in an image sensor line and the printer elements in a printer head line. <IMAGE>

Inventors

• 👤 Karim Dipl.-Ing. Khakzar

Bibliographic Details