Patent ID: 8242976

Claim:
A display driving device, which performs scan driving of a display panel, comprising: a plurality of unit circuits of the display driving device, each unit circuit receiving a bit of a plurality of bits; and a common pull-up switching element for the plurality of bits, having a first terminal thereof connected to a first driving voltage supply line, and a second terminal thereof connected to said plurality of unit circuits, wherein each unit circuit comprises: a diode for each said bit, having a anode thereof connected to the second terminal of the common pull-up switching element and an cathode thereof connected to a driving voltage output terminal of the corresponding said unit circuit; a pull-down switching element for each said bit, having a first electrode thereof connected to a second driving voltage supply line and a second electrode thereof connected to the driving voltage output terminal of the corresponding said unit circuit; and a resistor for maintaining an output of said driving output voltage terminal at a high logic level for each said bit, having a first end thereof connected to the first terminal of the common pull-up switching element and a second end thereof connected to the second electrode of the corresponding pull-down switching element.