Electronic digital logic circuitry – Interface – Current driving
Patent
1997-05-16
1999-07-27
Tokar, Michael
Electronic digital logic circuitry
Interface
Current driving
326 86, 326 81, 326 68, 327112, 327111, H03K 190175, H03K 19094, H03K 300
Patent
active
059296569
ABSTRACT:
An apparatus (110) for driving a capacitive display device (120) includes a pull-up transistor (180) having a source connected to a high voltage input node (184), a push-down transistor (182) having a source connected to a low voltage input node (186) and a drain connected to the drain of the pull-up transistor (180), a pull-up voltage level shifter (132) connected to the gate of the pull-up transistor (180), and a push-down voltage level shifter (134) connected to the gate of the push-down transistor (182), the drain of the pull-up transistor (180) connected to the drain of the push-down transistor (182) at a driver output node (170). A method for driving a capacitive display device (120) includes driving the capacitive display device (120) with a drive voltage signal (172) having a bandwidth substantially within the bandwidth of the capacitive display device (120).
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Chang Daniel D.
Motorola Inc.
Pickens S. Kevin
Tobin Kate
Tokar Michael
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