Driver circuitry for plasma display panel
US4180762A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | May 5, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0232
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Sustainer drive circuitry for an AC plasma display panel wherein a multiple level sustainer signal is applied to panel electrodes along one axis only. The sustainer circuit includes a pair of series connected NPN pull-high and pull-down output driver transistors which (a) are respectively driven by low voltage drive circuits isolated from the NPN output driver transistors by capacitors; (b) respectively charge up the panel to a relatively high voltage and discharge the panel to ground; and (c) include a feedback network for limiting the rise time of the high voltage across the panel for reducing noise and electromagnetic interference. Diode circuitry insures that these output driver transistors are turned on and off without ringing and are never driven on simultaneously. A common voltage supply provides both (a) the write pulse level and (b) the write pedestal level of the sustainer waveform. The invention further provides a border sustain driver circuit for one axis which comprises simple and inexpensive integrated circuit logic gates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.