Image display apparatus and high voltage driver circuit

An integrated circuit with an output contact and a push-pull stage with an output coupled to the output contact, the integrated circuit comprising:

• an n-type pull transistor with a main current channel coupled to the output;
• an n-type control transistor with a main current channel terminal coupled to a control electrode of the pull transistor via a node;
• a voltage source for applying a predetermined voltage over a series connection of the control electrode-main current channel terminals of the control transistor and the pull transistor;
• a p-type current mirror with an input fed by the main current channel of the control transistor and an output transistor that serves as push transistor for the push-pull stage;
• and
• an input transistor with a main current output coupled to said node, the input transistor having a control electrode coupled to an input of the driver circuit, arranged to control substantially all of a variable part of the current through the control transistor, an external input of the apparatus having a coupling to the control electrode of the input transistor that does not include the main current channel through the control transistor.

A driver circuit comprising a push-pull stage comprising:

• an output;
• a pull transistor of a first conductivity type with a main current channel coupled to the output;
• a control transistor of the first conductivity type with a main current channel terminal coupled to a control electrode of the pull transistor via a node;
• a voltage source for applying a voltage across a series connection of the control electrode-main current channel terminals of the control transistor and the pull transistor;
• a current mirror of a second conductivity type opposite to the first conductivity type, with an input fed by the main current channel of the control transistor and an output transistor that serves as push transistor for the push-pull stage;
• and
• an input transistor with a main current output coupled to said node, the input transistor having a control electrode coupled to an input of the driver circuit, arranged to control substantially all of a variable part of the current through the control transistor, an external input of the driver circuit having a coupling to the control electrode of the input transistor that does not include the main current channel through the control transistor.