发明名称 |
Driver circuit for an electroluminescent matrix-addressed display |
摘要 |
A driver circuit which operates in a switching mode is provided for an electroluminescent matrix-addressed display. The circuit has a row driver which switches a timed ramp voltage to a selected row of the display. A column driver is used to switch selected columns from a low to a high voltage. The column driver is pulse-modulated (PPM or PWM) so that each pulse is timed to coincide with the ramped voltage to provide a differential voltage peak which provides the desired brightness (or grey scale) at the pixel where the driven row and column cross.
|
申请公布号 |
US4554539(A) |
申请公布日期 |
1985.11.19 |
申请号 |
US19820440116 |
申请日期 |
1982.11.08 |
申请人 |
ROCKWELL INTERNATIONAL CORPORATION |
发明人 |
GRAVES, STEVEN P. |
分类号 |
G09G3/30;H04N3/12;(IPC1-7):G09G3/30 |
主分类号 |
G09G3/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|