Display device drive circuit

Details Display device drive circuit Display device drive circuit

2005-07-26

2005-07-26

Shalwala, Bipin (Department: 2673)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S204000

Reexamination Certificate

active

06922182

ABSTRACT:
A display device drive circuit that enables high-precision fine-tuning of the drive currents. In this drive circuit, a plurality of current supply transistors are connected in parallel to each data line. A switching transistor is connected in series with each current supply transistor. When the switching transistors are ON, the drive currents from the corresponding current supply transistors are supplied to the data line. The magnitude of the drive current supplied to the data line is controlled by the number of switching transistors that are ON simultaneously. Consequently, when compared to a case in which the magnitude of the drive current is controlled by the gate potential on the current supply transistors, it is possible to perform precision control of the drive current values.

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